JP3058363B2 - Connection auxiliary plug - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel connection auxiliary plug. More specifically, the present invention relates to a connection auxiliary plug for connecting a plurality of pin plug cords to a plurality of input / output jacks each comprising a signal terminal hole and a cylindrical arm terminal portion located so as to surround the signal terminal hole. A new connection aid that can be connected and disconnected with a plurality of input / output jacks in substantially one operation and without requiring a strong force, yet stably coupled with the plurality of input / output jacks. Try to provide a plug.

[0002]

2. Description of the Related Art In many cases, a plurality of input / output jacks for transmitting / receiving signals to / from external devices are provided in electronic devices related to video, audio, information processing, and the like.
As such an input / output jack, generally, one having a signal terminal hole and a cylindrical grounding terminal portion located so as to surround the signal terminal hole is used, and protrudes from an outer surface of an outer casing of an electronic device. Are arranged as follows.

In order to connect a plurality of electronic devices having such an input / output jack to each other, a pin plug having a coupling structure corresponding to the input / output jack, that is, inserted into a signal terminal hole of the input / output jack. A connection cord is used which is provided with pin plugs at both ends, each of which is composed of a signal plug pin for use and a cylindrical grounding terminal located so as to substantially surround the signal plug pin. The connection between the two electronic devices is made by separately coupling to the output jacks.

[0004] When interconnecting electronic devices having such input / output jacks, it is often necessary to connect two or more input / output jacks of both electronic devices. For example, between electronic devices such as a video tape recorder and a television receiver, at least one of the electronic devices has a video signal output jack and an audio signal output jack, and the other electronic device has a video signal input jack and an audio signal input jack. Must be connected separately, and such connection requires a minimum of 4 connections between the pin plug and the input / output jack of the connection cord.
Times, that is, as many times as the number of input / output jacks that need to be connected, there is a problem that the connection work is troublesome.

Therefore, in order to be able to combine the pin plugs of the plurality of connection cords with the plurality of input / output jacks in one operation, a plurality of input / output jacks of the target electronic device are provided. There has been proposed a connection assisting plug having a multiple structure in which a pin plug is supported by a plurality of jacks for connecting the pin plugs of a plurality of connection cords and one supporting member.

FIG. 16 shows an example a of such a multiple connection auxiliary plug.

In the figure, b is a support member, c, c, c
Are pin plugs projecting from one side surface of the support member b in parallel with each other, and are signal plug pins d, d, d and cylindrical grounding terminal parts e, e, e located so as to individually surround them. And the arrangement pitch is the same as the arrangement pitch of the three input / output jacks of the target electronic device. f, f, f are jacks protruding from the surface of the support member b opposite to the surface on which the pin plugs c, c, c protrude.

G, g, g are connection cords, and pin plugs h, h, h and i, i, i are respectively connected to both ends thereof.

One of the pin plugs h, h, h of the connection coats g, g, g is a jack f, f,
f, and the other pin plug i, i, i is connected to a jack of another electronic device (not shown).

Thus, the pin plugs c, c, c can be connected to the three input / output jacks of the target electronic device at once by holding the support member b.

[0011]

However, as is known, insertion of the signal plug pins d, d, d into the signal terminal holes of the input / output jack and the ground terminal e, with respect to the ground terminal of the input / output jack. Since the fittings of e and e are all performed in a press-fit state, it is necessary to use a very strong force to perform all of them at one time.
Similarly, when c and c are removed from the input / output jack, a strong force is required. For this reason, it is possible to attach / detach to the input / output jack in one operation, but on the other hand, it becomes unexpectedly difficult to handle, it takes much time, and the plug or input / output jack is deformed when attaching / detaching. There were some problems.

In particular, since the arrangement dimensions of the pin plugs c, c, c are inevitable to some extent, the plugs c, c, c
In some cases, the arrangement pitch of c and c does not match the arrangement pitch of a plurality of target input / output jacks. In such a case, a stronger force is required for attachment and detachment, and the electrical connection state becomes unstable.

[0013]

In order to solve the above-mentioned problems, a connection auxiliary plug according to the present invention comprises a signal terminal hole and a cylindrical grounding terminal portion surrounding the terminal hole. A plurality of signal plug pins respectively inserted into the terminal holes of the plurality of input / output jacks are fixed to the base portion, and the base portion is slidably supported within a certain range in the arrangement direction of the plug pins. A sliding plate, a ground contact piece fixed to the sliding plate and circumscribed to ground terminals of a plurality of input / output jacks, and a moving force of the sliding plate in a direction in which the ground contact piece approaches the plug pin. And a resilient member for urging the member.

[0014]

Accordingly, in the connection assisting plug of the present invention, a pressing force is applied to the sliding plate in a direction opposite to the direction of the moving force urged on the sliding plate, and the grounding contact piece fixed thereto is disengaged from the plug pin. After inserting a plurality of signal plug pins into a plurality of signal terminal holes in a state where the pins are moved away from each other, when the pressing against the sliding plate is released, the ground contact piece is elastically contacted with the plurality of ground terminal portions, thereby. Since the connection with the plurality of input / output jacks is completed, the press-fitting of the input / output jacks can be performed only by the press-fitting of the signal plug pins into the signal terminal holes.

Further, if the detachment from the input / output jack is performed while pressing the sliding plate in the above direction, the resistance received at that time is only the frictional resistance between the signal plug pin and the signal terminal hole. I'm done.

Thus, according to the connection assisting plug of the present invention, the force required for coupling to and removal from the input / output jack is required for insertion or extraction of the signal plug pin into / from the signal terminal hole and pressing against the sliding plate. Since only the force is applied, the input and output jacks are not required to be as strong as the press-fit connection to the ground terminal, and the contact of the ground contact piece to the ground terminal is a resilient member. The resilient force ensures that the electrical connection is assured.In addition, when connecting multiple connection cords and multiple input / output jacks, the signal plug pins are pressed with the sliding plate pressed. Since the operation is completed only by releasing the hand after being inserted into the signal terminal hole of the input / output jack, the operation can be performed in almost one operation.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the connection auxiliary plug of the present invention will be described below with reference to the embodiments shown in the accompanying drawings.

FIGS. 1 to 11 show a first embodiment in which the connection auxiliary plug of the present invention is applied to a connection auxiliary plug for connecting three pin plug cords to a video camera.

In the drawing, reference numeral 1 denotes a connection auxiliary plug, which is detachably connected to three input / output jacks of a video camera, which will be described later, and includes a case forming an outer shell, Three relay jacks and a conductor substrate fixed to the case, three signal plug pins supported by the conductor substrate and respectively connected to the signal terminal holes of the relay jack, and sliding within a certain range to the plug case. A sliding plate movably supported, a grounding contact plate fixed to the sliding plate and electrically connected to the grounding connection portion of the relay jack, and a biasing force applied to the sliding plate. And the like.

Reference numeral 2 denotes a plug case. The plug case 2 has a front-rear direction (a direction toward the lower right in FIG. 1 is a front side, a direction toward the upper left is a rear side, and a direction toward the lower left is the left side and is toward the upper right in FIG. 1). The direction is defined as the right side, the upward direction in the figure is defined as the upper side, and the downward direction is defined as the lower side. The two case halves 3 and 4 formed in two pieces are integrally connected to each other, and have a substantially rectangular box shape that is long in the left-right direction when viewed from above and below and in the front-rear direction. Have been.

Three jack insertion holes 5, 5, 5 which are arranged at substantially equal intervals in the left-right direction are formed in the upper surface wall of the case 2, and the inner surfaces of the front and rear side walls are located at the positions near the upper end thereof. The supporting protrusions 6, 6, 6 extending in the left and right directions are formed with engaging grooves 7, 7 extending in the left-right direction at positions near the lower ends thereof, and furthermore, the same height as the engaging grooves 7, 7 on the left side wall. Is formed with a horizontally long insertion hole 8.

Thin connecting pieces 9, 9 protrude rearward from the left and right ends of the front case half 3, and the upper and lower portions of the inner surfaces of the left and right side walls of the rear case half 4 are located close to the rear ends. Grooves 10 and 10 extending in the direction
The two case halves 3 and 4 are integrally connected to each other by engaging the engaging claws 9a formed at the distal ends of the connecting pieces 9 and 9 with the engaging grooves 10 and 10, respectively.

Reference numeral 11 denotes a jack base, which is formed of a material having an insulating property into a flat plate having a size substantially equal to the inner dimension of the horizontal section of the case 2.
Is fixed to the upper end inside the case 2 by being located between the upper surface wall of the base 2 and the supporting ridges 6, 6, 6.

Reference numerals 12, 13, and 14 are relay jacks.
Each is provided with a substantially cylindrical ground connection portion 15 and a signal terminal hole 16 located at the center thereof and insulated from the ground connection portion 15. Are fixed to the jack base 11 in a state where the signal connection pins 16a are arranged, the axial direction extends in the up-down direction, and are arranged at substantially equal intervals in the left-right direction. 2 are inserted through the jack insertion holes 5, 5, and 5, respectively, and project upward.

The reference numerals 17 and 17 'denote the ground connection part 1.
5, 15, and 15 are ground terminals for connecting a ground pattern on a conductor board, which will be described later, and one of the ground terminals 17 is a left end relay jack 12 (hereinafter, referred to as a "first relay jack"). ) And center relay jack 13
(Hereinafter, referred to as “second relay jack”), the lower end of each of the ground connection portions 15, 15 projecting upward from the jack base 11 and the other ground terminal 17 ′ are connected to the right end relay jack 14. (Hereinafter, referred to as “third relay jack”) are provided in a state of being electrically connected to the lower ends of the portions of the ground connection portion 15 protruding upward from the base plate 11.

Reference numeral 18 denotes a conductor board disposed below the jack base 11 so as to be opposed to the jack base 11 in parallel with the jack base 11. The conductor board 18 has substantially the same size as the jack base 11, and is disposed on the lower surface thereof so as to be separated from each other in the left-right direction. The three signal connection patterns 19, 20, 21 and the ground pattern 22 occupying most of the lower surface are formed, and the signal connection patterns 19, 20, 21 are respectively provided at positions respectively corresponding to the signal connection patterns 19, 20, 21. Two signal terminal insertion holes 18a and 18b are formed, and two ground terminal insertion holes 18c and 18c are formed in a portion corresponding to the ground pattern 22.

The lower ends of the signal connection pins 16a, 16a, 16a of the relay jacks 12, 13, 14 are individually inserted into the signal terminal insertion holes 18a, 18a, 18a, respectively, so that the signal connection patterns 19, 20 are formed. , 21 are soldered separately.

Reference numerals 23, 23 denote ground pins, the upper ends of which pass through the jack base 11 and are soldered separately to the ground terminals 17, 17 ', and the lower ends of which are the ground terminal insertion holes. 18c, 18c are inserted and soldered to the ground pattern 22.

Reference numerals 24, 25 and 26 denote signal plug pins. The signal plug pins 24, 25, and 26 have signal terminal insertion holes 1 formed at their upper ends in the conductive substrate 18.
8b, 18b, and 18b, each of which is fixed to the conductor substrate 18 in a state of being individually inserted therein, and whose upper end is soldered separately to the signal connection patterns 19, 20, and 21.

Therefore, these signal plug pins 24, 2
The reference numerals 5 and 26 are supported so as to protrude vertically downward from the conductive substrate 18 and are arranged in the left-right direction, and the leftmost signal plug pins 24 (hereinafter, referred to as “first signal plug pins”). Is connected to the signal connection pin 16a of the first relay jack 12 via the signal connection pattern 19, and the central signal plug pin 25 (hereinafter, referred to as "second signal plug pin") is connected for signal. The signal connection pin 16a of the second relay jack 13 via the pattern 20
The signal plug pin 26 at the right end (hereinafter, referred to as a “third signal plug pin”) is connected to the signal connection pin 16 a of the third relay jack 14 via the signal connection pattern 21. .

The arrangement pitch of the signal plug pins 24, 25 and 26 is the same as the arrangement pitch of three predetermined input / output jacks of the video camera described later. It is slightly protruded from the lower end, and is bent so as to form a substantially rhombus.

Reference numeral 27 denotes a sliding plate. The sliding plate 27 is formed of an insulating material in the shape of a flat plate that is long in the left-right direction, and the front-rear width of a left end portion 28 (hereinafter, referred to as a “pressed portion”) is smaller than the front-rear width of the remaining portion. And left end 28
The length in the left-right direction of the front and rear side portions 29, 29 (hereinafter referred to as “engagement side portions”) of the portion except for is slightly shorter than the length of the engagement grooves 7, 7 formed in the case 2. I have.

At the substantially central portion of the slide plate 27 and at a position near the pressed portion 28, elongated holes 30 long in the left-right direction are provided.
A notch 31 having a substantially U-shape is formed at the right end edge, and cut grooves 32, 32,... Are formed at both left and right ends near the engagement side portions 29, 29, respectively. A lead wire insertion hole 33 is formed at the right end of the rear portion, and a spring hook hole 34 is formed at a position slightly to the right of the middle of the front portion.

The sliding plate 27 is fixed to the case 2 in the left-right direction by its engaging side portions 29, 29 being slidably engaged with the engaging grooves 7, 7, respectively. While being supported so as to be movable within the range, the pressed portion 28 projects leftward through an insertion hole 8 formed in the left side wall of the case 2. In addition, the signal plug pin 2
4, 25, 26 are respectively inserted into the elongated holes 30, 30 and the notch 31 of the sliding plate 27.

Reference numeral 35 denotes a pressing spring having a substantially torsion coil spring shape.
Is elastically contacted with the rear end of the inner surface of the right side wall, and the front end of the other arm 35 c is locked in a spring hook hole 34 formed in the slide plate 27.

Accordingly, the pressing spring 35 is provided on the sliding plate 27.
As shown in FIG. 7, while the leftward movement force is urged by the elastic force of the left side and the right side is not pressed rightward, the left end surfaces of the engagement side portions 29, 29 are engaged with the engagement grooves. It is held at a position in which it comes into contact with the left end face of 7, 7 (hereinafter, referred to as “initial position”).

Reference numeral 36 denotes a ground contact plate. The ground contact plate 36 is formed of a metal plate having conductivity and spring elasticity so as to form a substantially U-shape that is elongated in the left-right direction when viewed from the up-down direction. The length of the portion of the signal plug pins 24, 25, 26 protruding downward from the slide plate 27 is made smaller. Further, small protruding pieces 36a, 36a,... Are formed at positions near the left end and the right end of the upper edge of the grounding contact plate 36, and the grounding contact plate 36 includes these protruding pieces 36a, 36a.
are formed in the sliding plate 27.
Are fixed to the sliding plate 27 in a state where they are individually inserted.

Accordingly, the ground contact plate 36 is provided on the sliding plate 27.
With the signal plug pins 24, 2
The middle part of 5 and 26 is located inside the ground contact plate 36.

A pair of front and rear ground contact pieces 37, 37, 38 and 38 are respectively directed inward at a position near the left end and at a substantially intermediate portion of the lower half of the front and rear both sides of the ground contact plate 36. It is formed in a cut-and-raised shape, and the left grounding contact pieces 37, 37 (hereinafter referred to as "first grounding contact pieces")
Say ) Indicates a portion slightly lower than the center of the first signal plug pin 24, and right grounding contact pieces 38, 38 (hereinafter, referred to as "second grounding contact pieces") will be used for the second signal. A right end portion 39 (hereinafter, referred to as a “third grounding contact piece”) that is positioned so as to surround a portion slightly lower than the center of the plug pin 25 from the substantially right side and extends in an arc shape of the grounding contact plate 36. Is the third signal plug pin 2
6 is located so as to surround a portion slightly lower than the center from substantially the right side.

Note that the sliding plate 27 is in the pushed-in position shown in FIG. 8, that is, the position where the right end surfaces of the engagement side portions 29, 29 are in contact with the right end surfaces of the engagement grooves 7, 7, a position slightly before. When it comes to
Ground contact pieces 37, 37 are located coaxially with the first signal plug pin 24, and the second ground contact pieces 38, 3
8 is located coaxially with the second signal plug pin 25, and the third ground contact piece 39 is located slightly away from the third signal plug pin 26 (see FIG. 10).

Reference numeral 40 denotes a lead wire, and an intermediate portion thereof is inserted into a lead wire insertion hole 33 formed in the slide plate 27,
The two ends are ground pattern 22 and ground contact plate 36.
Are soldered separately.

The relay jacks 12, 13,
14 ground connection parts 15, 15, 15 are ground terminals 1
7, 17 ', ground pins 23, 23, ground pattern 2
2 and the grounding contact plate 36 via the lead wire 40.

The connection auxiliary plug 1 is configured as described above.

Next, an example of how to use the connection auxiliary plug 1 will be described with reference to a case where a video camera and a television receiver are connected.

Reference numerals 41, 42 and 43 are connection cords (pin plug cords) (see FIGS. 1, 6 and 11). These connection cords 41, 42, 43 are connected to cables 44, 4
4, 44 and pin plugs 4 respectively connected to both ends thereof
5, 45, 45 and 45 ', 45', 45 ', and the pin plugs 45, 45, 45 and 45', 45 '.
'And 45' are cylindrical grounding terminal portions 46, respectively.
And a signal plug pin 47 located at the center thereof.

Then, the one pin plugs 45, 4
5 and 45 are connected to three relay jacks 1 of auxiliary plug 1
2, 13, and 14, respectively. As a result, one ends of the connection cords 41, 42, 43 are connected to the connection auxiliary plug 1, and the signal plug pins 4 ', 45', 45 'of the other pin plugs 45', 45 ', 45' of the connection cords 41, 42, 43 are connected.
7, 47, 47 and the three signal plug pins 24, 25, 26 of the connection auxiliary plug 1 are separately connected, and the ground terminals 46, 46, 46 are connected to the ground contact plate 36. Is done.

Reference numeral 48 denotes a video camera, an outer casing 49 of the video camera.
There are three input / output jacks 50, 51 and 52 on the surface of the
For example, two input / output jacks for video signals and two input / output jacks for stereo audio signals are arranged (see FIG. 9 and the like).

Reference numeral 53 denotes a television receiver, and three input / output jacks 55, 56, and 57 are arranged at predetermined positions of a cabinet 54, and the functions of the input / output jacks 55, 56, and 57 are video. These correspond to the functions of the input / output jacks 50, 51, and 52 of the camera 48, respectively.

The input / output jacks 50, 51, 5
Each of 2, 55, 56, and 57 has a cylindrical ground terminal 58 and a signal terminal hole 59 located at the center thereof and insulated from the ground terminal 58.

Therefore, the connection auxiliary plug 1 is connected to the three input / output jacks 50, 51, 52 of the video camera 48. This connection is performed as follows.

When the case 2 is gripped, the pressed portion 28 of the sliding plate 27 is pressed to the right to move the sliding plate 27 to the pushing position (see FIG. 8). Plug pins 24, 25, 26 to input / output jacks 50, 5,
1, 52 are inserted into the signal terminal holes 59, 59, 59 (see FIG. 9). At this time, three grounding contact pieces 37,
38 and 39 are signal plug pins 24 as shown in FIG.
Since it is slightly closer to the right than the position coaxial with 25 and 26,
These grounding contact pieces 37, 38, 39 do not at least press-fit into contact with the grounding terminal portions 58, 58, 58, and therefore require a very large force to insert the signal plug pins 24, 25, 26. And not. After inserting the signal plug pins 24, 25, 26, the sliding plate 27 is inserted.
When the pressing force applied to the sliding plate 27 is removed, the sliding plate 27
5, is moved to the initial position side by this pressing force, and by this movement, the grounding contact pieces 37, 38, 39 are connected to the grounding terminal portions 58, 58, 58 of the input / output jacks 50, 51, 52.
It comes into elastic contact with the outer peripheral surface of 58.

Thus, the connection auxiliary plug 1 has 3
The signal plug pins 24, 25, 26 and the signal terminal holes 59, 59, 59 of the input / output jacks 50, 51, 52 are separately coupled to each other.
The grounding contact pieces 37, 38, 39 and the grounding terminals 59, 59, 59 of the input / output jacks 50, 51, 52 are separately coupled.

Then, the other pin plugs 45 ', 45', 45 'of the connection cords 41, 42, 43 are respectively connected to three input / output jacks 55, 56, 57 of the television receiver 53. As a result, signals can be exchanged between the video camera 48 and the television receiver 53.

When the auxiliary plug 1 is detached from the input / output jacks 50, 51, 52, if the case 2 is grasped and pulled while the sliding plate 27 is moved to the pushing position, the grounding contact piece 37, Since the input / output jacks 38, 39 of the input / output jacks 50, 51, 52 are released from the pressure contact with the grounding terminals 58, 58, 58, the resistance received when the case 2 is pulled is the signal plug pins 24, 25, 26 and the signal plug pins 24, 25, 26. Only the frictional resistance between the terminal holes 59, 59, 59 is obtained.

However, the connection and removal of the connection auxiliary plug 1 to and from the three input / output jacks 50, 51, 52 are performed as described above, so that the operation is completed in substantially one operation, and a very strong force is applied. do not need.

FIGS. 12 to 15 show a second embodiment 60 of the connection auxiliary plug of the present invention.

The connection auxiliary plug 60 has a case forming an outer shell, a base plate fixed inside the case, three signal plug pins fixed to the base plate, and a slidable case. , A grounding contact piece fixed to the sliding plate, a pressing spring for biasing the sliding plate to move, and the like.

Reference numeral 61 denotes a pair of front and rear case halves 62 and 62
′ Is integrally connected to each other, and has a box shape that is long in the left-right direction. An opening 63 is formed in a portion of the lower surface except for a peripheral portion, and a lower end of the right side wall 64 is located near the lower end. Is formed with a horizontally long insertion hole 64a.

Reference numeral 65 denotes an insulating base plate which is long in the left-right direction, is fixed in a horizontal position at a position slightly above the lower end of the inside of the case 61, and has a right end slightly spaced from the right wall 64 of the plug case 61. Open and facing. The base plate 65 has a spring receiving portion 66 extending along the left end of the lower surface thereof. A spring disposing recess 66 a is provided at the center of the right side surface of the spring receiving portion 66. At the approximate center of the surface, another spring arrangement concave portion 67 is formed.

Further, three pin mounting holes 68, 68, 68 are formed at predetermined intervals in the left-right direction at a substantially middle portion in the width direction of the base plate 65. At predetermined intervals, three terminal insertion holes 69, 6
9 and 69 are formed, and these terminal insertion holes 69 and 6 are formed.
9 and 69 are formed long in the left-right direction.

Reference numerals 70, 71 and 72 denote signal plug pins, and upper ends 70a, 71a and 72a thereof
5 are respectively inserted through the pin mounting holes 68, 68, 68 and are fixed to the base plate 65.

Reference numeral 73 denotes a sliding plate, which includes a main portion 74 having substantially the same size as the base plate 65, a spring receiving portion 75 protruding along the right side of the upper surface of the main portion 74, and a main portion 74. The pressed part 76 protruding from the right end of the case 61 is integrally formed of an insulating material, and slides in the left-right direction between the receiving edge 61 a protruding inward from the lower end of the case 61 and the base plate 65. Arranged freely.

A spring disposing recess 74 a is formed substantially at the center of the left end face of the main part 74, and a spring disposing recess 75 a is formed substantially at the center of the left side face of the spring receiving part 75. Three pin insertion holes 77, 77, 77 arranged in the left-right direction are formed in an intermediate portion in the direction, and these pin insertion holes 77, 77, 77 are formed long in the left-right direction.

Most of the signal plug pins 70, 71, 72 except for the upper ends are formed in the pin insertion holes 77, 77, 7.
7 are individually inserted and protruded downward from the sliding plate 73.

Numerals 78 and 78 denote coil spring-shaped pressing springs. On the other hand, reference numeral 78 denotes a spring disposing concave portion 66a formed on both ends of the base plate 65 and a spring disposing recess formed on the main portion 74 of the sliding plate 73. The other coil spring 78 is compressed while being supported by the respective recesses 74 a, and the other ends of the coil springs 78 are formed in the spring placement recesses 67 at the right end of the base plate 65 and the spring receiving portions 75 of the sliding plate 73. Compressed while being supported separately.

Accordingly, the rightward moving force is urged on the sliding plate 73 by the pressing force of the pressing springs 78, 78, and while the sliding plate 73 is not pressed to the left, as shown in FIG. The spring receiving portion 75 is connected to the right side wall 64 of the plug case 61.
Is held at the initial position in contact with.

Reference numerals 79, 80 and 81 denote grounding contact pieces, which are contact portions 79a having a substantially semicircular shape when viewed from above and below.
80a, 81a and terminal portions 79b, 80 protruding upward from the rear ends of the upper ends of the contact portions 79a, 80a, 81a.
b, 81b are integrally formed by a metal plate having good conductivity, and the contact portions 79a, 80a, 81a are located so as to surround the signal plug pins 70, 71, 72 from the substantially left side, respectively, and , Terminal portions 79b, 80b, 81b
Are fixed to the sliding plate 73 while penetrating the rear side of the sliding plate 73.

Then, the terminal portions 79b, 80b, 81
The upper end of the terminal insertion hole 6 formed in the base plate 65
9, 69 and 69 are inserted separately.

Reference numeral 82 denotes a connection cord, which is formed by binding three cables 83, 84, 85.
Reference numerals 4 and 85 include signal leads 83a, 84a and 85a and ground leads 83b, 84b and 85b, respectively. One end of the connection cord 82 is introduced into the case 61 through a cord insertion hole 86 formed in the upper wall of the case 61, and the signal lead wires 83a,
84a, 85a are soldered separately from the upper ends 70a, 71a, 72a of the signal plug pins 70, 71, 72, respectively.
The ground lead wires 83b, 84b, 85b are connected to the terminal portions 79b, 80b, 81b of the ground contact pieces 79, 80, 81.
Are soldered separately to the upper end of the slab.

However, such a connection auxiliary plug 60
The connection and removal of the three input / output jacks 50, 51, and 52 are performed in the same manner as the connection auxiliary plug 1 shown in the first embodiment.

That is, when the case 61 is gripped, the sliding plate 73 is pressed to the left to hold the ground contact pieces 79 and 8.
0 and 81 are kept away from the signal plug pins 70, 71 and 72 (see FIG. 15).
After inserting the first and the second 72 into the signal terminal holes 59, 59, 59 of the input / output jacks 50, 51, 52, except for the pressing force applied to the sliding plate 73, the sliding plate 73 has the pressing springs 78, 78.
Is moved to the right by the pressing force of the
9, 80, 81 elastically contact the grounding terminals 58, 58, 58 of the input / output jacks 50, 51, 52.

The same applies to removal.
Is pressed to the left to pull the case 61 with the ground contact pieces 79, 80, 81 separated from the ground terminal portions 58, 58, 58.

[0073]

As is apparent from the above description, the connection auxiliary plug of the present invention is an input / output jack comprising a signal terminal hole and a cylindrical ground terminal located so as to surround the terminal hole. A connection auxiliary plug for connecting a plurality of pin plug cords to a plurality of said plurality of pin plug cords, wherein a plurality of signal plug pins respectively inserted into terminal holes of a plurality of input / output jacks are fixed; A sliding plate slidably supported within a certain range in the arrangement direction of the plug pins, a grounding contact piece fixed to the sliding plate and circumscribing the grounding terminals of the plurality of input / output jacks; The moving plate is provided with a resilient member for urging a moving force in a direction in which the ground contact piece approaches the plug pin.

Therefore, in the connection assisting plug of the present invention, a pressing force is applied to the sliding plate in a direction opposite to the direction of the moving force urged on the sliding plate, and the grounding contact piece fixed thereto is disengaged from the plug pin. After inserting a plurality of signal plug pins into a plurality of signal terminal holes in a state where the pins are moved away from each other, when the pressing against the sliding plate is released, the ground contact piece is elastically contacted with the plurality of ground terminal portions, thereby. Since the connection with the plurality of input / output jacks is completed, the press-fitting of the input / output jacks can be performed only by the press-fitting of the signal plug pins into the signal terminal holes.

Further, if the detachment from the input / output jack is performed while pressing the sliding plate in the above direction, the resistance received at this time is only the frictional resistance between the signal plug pin and the signal terminal hole. I'm done.

According to the connection auxiliary plug of the present invention, the force required for coupling to and removal from the input / output jack is required for insertion or extraction of the signal plug pin into or from the signal terminal hole and pressing for the sliding plate. Since only the force is applied, the input and output jacks are not required to be as strong as the press-fit connection to the ground terminal, and the contact of the ground contact piece to the ground terminal is a resilient member. The resilient force ensures that the electrical connection is assured.In addition, when connecting multiple connection cords and multiple input / output jacks, the signal plug pins are pressed with the sliding plate pressed. Since the operation is completed only by releasing the hand after being inserted into the signal terminal hole of the input / output jack, the operation can be performed in almost one operation.

The structure, shape, or number of the signal plug pins, sliding plates, ground contact pieces, resilient members and other components shown in each of the above embodiments, as well as the type of electronic equipment and the role of input / output jacks And the like are merely examples of embodiments of the present invention, and the technical scope of the present invention should not be interpreted in a limited manner. In particular, the number of signal plug pins and grounding contact pieces may be at most the same as the number of functionally integrated input / output jacks of the electronic device. There is no requirement that the numbers be the same as the numbers.

[Brief description of the drawings]

FIG. 1 shows a first embodiment in which the connection auxiliary plug of the present invention is applied to a connection auxiliary plug for connecting a connection cord to a video camera together with FIGS. 2 to 11, and FIG. FIG. 3 is a perspective view showing a part of a connection cord.

FIG. 2 is an enlarged sectional view taken along line II-II of FIG.

FIG. 3 is an exploded perspective view of a case.

FIG. 4 is an exploded perspective view showing a main part.

FIG. 5 is an enlarged perspective view showing a main part.

FIG. 6 is an enlarged sectional view taken along the line VI-VI in FIG. 2;

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 2;

FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. 2 in a state where the sliding plate has been moved to the pushing position.

9 is a cross-sectional view taken along the line IX-IX of FIG. 2 in an initial state of coupling to the input / output jack.

FIG. 10 is a cross-sectional view taken along line XX of FIG. 2 in a state where coupling to the input / output jack is completed.

FIG. 11 is a perspective view showing an example of a connection mode.

FIG. 12 shows a second embodiment of the connection auxiliary plug of the present invention together with FIGS. 13 to 15, and is a vertical cross-sectional view at the center.

FIG. 13 is an exploded perspective view of a main part with a part cut away.

FIG. 14 is a sectional view taken along the line XIV-XIV of FIG.

15 is a cross-sectional view taken along the line XV-XV in FIG. 12 in an initial state of coupling to the input / output jack.

FIG. 16 is a perspective view showing an example of a conventional connection auxiliary plug.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connection auxiliary plug 2 Base part 24 Signal plug pin 25 Signal plug pin 26 Signal plug pin 27 Sliding plate 35 Resilient member 37 Ground contact piece 38 Ground contact piece 39 Ground contact piece 41 Pin plug code 42 Pin plug code 43 Pin plug Code 48 Electronic device 50 Input / output jack 51 Input / output jack 52 Input / output jack 58 Ground terminal 59 Terminal hole 60 Connection auxiliary plug 61, 65 Base 70 Signal plug pin 71 Signal plug pin 72 Signal plug pin 73 Sliding plate 78 Resilient member 79 Ground contact piece 80 Ground contact piece 81 Ground contact piece 82 Connection cord

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Teemi Nakahara 1-18-18 Nakamagome, Ota-ku, Tokyo Soshin Electric Co., Ltd. (56) References JP-A-63-174287 (JP, A) (58) ) Surveyed field (Int.Cl. ⁷ , DB name) H01R 24/02 H01R 31/06

Claims (1)

(57) [Claims] 1. A connection auxiliary plug for connecting a plurality of pin plug cords to a plurality of input / output jacks each comprising a signal terminal hole and a cylindrical ground terminal located so as to surround the signal terminal hole. A base portion to which a plurality of signal plug pins individually inserted into the terminal holes of the plurality of input / output jacks are fixed, and the base portion is slidably supported within a certain range in the arrangement direction of the plug pins. A sliding plate, a grounding contact piece fixed to the sliding plate and circumscribing the grounding terminals of the plurality of input / output jacks, and a moving force in the direction in which the grounding contact piece approaches the plug pin. A connection auxiliary plug, comprising a resilient member for urging.