JP3115480B2 - DIN socket and DIN socket grounding bracket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DIN socket connected to a DIN plug and a grounding metal used for the DIN socket.

[0002]

2. Description of the Related Art A DIN socket is a connector socket conforming to the German DIN standard. As shown in FIG.
A socket housing 101 formed into a rectangular parallelepiped by an insulating molding material is provided. Socket housing 101
A plurality of contact receiving holes 104 are formed in a cylindrical contact receiving portion 103 surrounded by an annular concave groove 102 recessed from the front surface of the contact receiving hole 104.
A fork-type female contact that comes into contact with the plug pin of the DIN plug is fitted into the connector. The female contact is bent downward at the rear of the socket housing and has its end 105
Are soldered to a predetermined pattern on a printed wiring board (not shown) provided on the lower surface of the DIN socket.

In the annular concave groove 102, a grounding metal fitting 109 is provided.
Of the cylindrical contact portion 106 is inserted.
As shown in FIG. 18, a guide portion 108 that expands forward is integrally formed at the front edge, and a terminal leg 107 is bent downward at a right angle on the lower surface.
Further, a pair of locking pieces 110 which lock with a locking step (not shown) formed in the annular groove 102 and prevent the earthing metal fitting 109 from being pulled forward are cut and raised from both side surfaces.

[0004] As shown in FIG.
The upper portion is separated by a slit 111 parallel to the axial direction of the cylinder and becomes freely expandable and contractible in the radial direction, and clamps a DIN plug sleeve fitting inserted into the annular groove 102 between the contact housing portion 103 and the sleeve. It is configured to make elastic contact with the fitting.

[0005] Such a DIN socket is used for connection between audio and video equipment and connection between a personal computer and peripheral equipment such as a keyboard. In recent years, in particular, in recent years, S-VHS VTRs have been used for televisions. Is used as a so-called S terminal for separately outputting a chromaticity signal and a luminance signal.

The S-VHS VTR also has a pin jack for outputting a chromaticity signal and a luminance signal with a single coaxial cable for connection to a conventional television. In other words, the S-VHS VTR includes a circuit capable of outputting a video signal in any format.
Since the output of the VHS system is excellent in the horizontal resolution of the television, when a DIN plug is connected to the DIN socket, the output circuit in the VTR is switched so as to give priority to the output circuit from the pin jack.

For this reason, the conventional DIN socket has a switch mechanism for detecting that a DIN plug has been inserted into the DIN socket as shown in FIG. 19, and when the DIN plug is connected, the switch mechanism detects this. , The above circuit switching is performed.

This DIN socket with a switch mechanism is
An actuator 112 that slides in the front-back direction in the annular groove 102 is provided.
The switch terminal 113 and the break terminal 114 formed of a leaf spring are disposed so as to face and elastically contact each other.
When the sleeve of the DIN plug is inserted into the annular groove 102, the actuator 112 moves backward, the contact between the switch terminal 113 and the break terminal 114 is cut off, and it is detected that the DIN plug is connected.

[0009]

DISCLOSURE OF THE INVENTION
According to the N socket, it is possible to detect that the DIN plug is connected, but since the switch mechanism is provided behind the socket housing 101, the DIN socket becomes large, and the actuator 112, the switch terminal 113, The number of components increases at the break terminals 114 and the like.

Further, in a DIN socket which does not require a switch detection function, this switch mechanism is completely useless, and if the DIN socket with a switch is to be shared, the cost increases.

The present invention has been made in view of such conventional problems,
In particular, there is provided a DIN socket that can be provided with a switch detection function without increasing the number of parts and can be shared with a DIN socket that does not require a switch detection function.

Further, the present invention provides a DIN socket grounding metal which can obtain a switch detection function by simple processing and without increasing the number of parts.

[0013]

SUMMARY OF THE INVENTION It is an object of the present invention to solve such a problem. In a DIN socket according to the present invention, an annular groove is provided from a front surface, and the DIN socket is formed by an annular groove. A socket housing in which a plurality of contact receiving holes are drilled in the enclosed contact receiving portion, and a contact portion that is received in the contact receiving hole and contacts the plug pin of the DIN plug and is bent downward at the rear of the socket housing. A female contact provided with a terminal portion; a cylindrical contact portion accommodated in the annular groove and elastically in contact with a sleeve fitting of a DIN plug inserted into the annular groove; and a terminal leg projecting out of the socket housing. in DIN socket comprising a ground metal with bets, the axially upper flat
Separated by slits formed in rows , sockets on both sides
It has a pair of locking parts to lock to the housing, and on the lower surface,
U-shaped notch along the circumferential direction and the rear end of the cylindrical contact
Form a continuous cut to one of the U-shaped notches
The cylindrical contact portion, the front edge of the cylindrical contact portion and the U-shaped notch
Between the main grounding bracket and the main grounding bracket.
Divide it into a grounding bracket and use the U-shaped
Cut out the terminal of the switch and cut out the U-shaped notch.
Cut out and raise the terminal legs using the
And the switch terminal legs
The main feature is that the main grounding metal and the auxiliary grounding metal are housed in the annular groove so as to project from the lower surface and to be separated from each other.

The DIN socket grounding metal fitting is housed in the annular groove of the socket housing, and has a cylindrical contact portion elastically in contact with the sleeve metal fitting of the DIN plug inserted into the annular groove. A grounding metal fitting for a DIN socket having a protruding terminal leg and an upper portion of a cylindrical contact portion separated by a slit parallel to an axial direction, a pair of engaging members which are engaged with a socket housing on both side surfaces of the cylindrical contact portion. A stop is provided and a switch is
U-shaped notch to cut and raise the
The main feature is that it is cut out along the circumferential direction adjacent to the leg .

Further, a continuous cut is formed from the rear end of the cylindrical contact portion to one of the U-shaped notches, and the terminal leg is cut and raised downward with the U-shaped notch and the cut as outlines. It is characterized by.

Further, a guide portion that expands forward is integrally connected to the front edge of the cylindrical contact portion, and a cutout recess is formed at the lower end of the guide portion.

[0017]

According to the first aspect of the present invention, since the main earthing metal and the auxiliary earthing metal are housed in the annular recess so as to be separated from each other, the semi-cylindrical member of the main earthing metal and the auxiliary earthing metal before the DIN plug is connected. The contact acts as a make contact for the switch and the switch is released. When the DIN plug is connected, the sleeve of the DIN plug bridges the semi-cylindrical contact between the main grounding metal and the auxiliary grounding metal in the annular groove, the switch is closed, and the connection of the DIN plug is detected. I do. When the DIN plug is further inserted, DIN
The plug pin of the plug is electrically connected to the female contact housed in the contact housing hole.

When used as a DIN socket that does not require a switch detection function, the semi-cylindrical contact portion of the main grounding metal comes into contact with the sleeve metal of the DIN plug and is grounded. Therefore, it can be shared with a DIN socket that does not require a switch detection function without particularly changing the configuration.

The upper part of the cylindrical contact part is formed parallel to the axial direction
With a U-shaped notch on the underside.
Continuous from the rear end of the cylindrical contact to one of the U-shaped notches
The notch is formed so that the leading edge of the cylindrical contact
With a simple process of cutting between the U-shaped notch and
Split the grounding bracket into a main grounding bracket and an auxiliary grounding bracket.
Can be The cylindrical contact before cutting is
DIN socket ground without switch detection function
It can be used as a metal fitting and has a slit
The diameter of the cylindrical contact part can be expanded or reduced
It acts as an elastic contact piece in the annular groove.

On the lower surface of the cylindrical contact portion,
U-shaped notch and U-shaped notch
Form a continuous notch to one side and loop the U-shaped notch
Cut and raise the switch terminal legs as a
Cut and erect the terminal legs with the notch and notch as contours
The terminal leg and switch terminal leg are formed from the cylindrical surface
Press the cylindrical contact part from the plate material.
Material can be efficiently taken out.

A pair of cylindrical members provided on both sides of the cylindrical contact portion are provided.
Engaging portion, after the cylindrical contact part is disconnected, the socket Howe
Lock the main grounding bracket and auxiliary grounding bracket.
Each is fixed in the annular groove.

According to the second aspect of the present invention, the cylindrical contact portion is housed in the annular concave groove of the socket, makes elastic contact with the sleeve fitting of the DIN plug, and makes a ground connection. Lower surface of cylindrical contact
U-shaped notch to cut and raise switch terminal leg
Notch along the circumferential direction next to the terminal leg
Therefore, the grounding metal can be divided into a main grounding metal having a terminal leg and an auxiliary grounding metal having a switch terminal leg, and can function as a make contact of a switch for detecting connection of a DIN plug. . Therefore, a switch detection function can be added to the DIN socket without increasing the number of parts.

A pair of engaging portions provided on both side surfaces of the cylindrical contact portion are engaged with the socket housing to fix the cylindrical contact portion in the annular groove. Fix the metal fitting and the auxiliary grounding metal in the annular groove respectively.

According to a third aspect of the present invention, the upper surface of the cylindrical contact portion is separated from the lower surface of the cylindrical contact portion by a slit formed in parallel with the axial direction and extends from the rear end of the cylindrical contact portion to one of the U-shaped notches. Since the cuts are formed, the ground metal can be divided into the main ground metal and the auxiliary ground metal by a simple process of cutting between the front edge of the cylindrical contact portion and the U-shaped notch.

On the lower surface of the cylindrical contact portion, a switch terminal leg is formed with a U-shaped notch cut along the circumferential direction as a contour, and the U-shaped notch and the rear end of the cylindrical contact portion are formed. To the U-shaped notch, the terminal leg is cut and raised with the contour as a contour, so that the terminal leg and the switch terminal leg can be formed from the cylindrical surface, and the cylindrical contact portion is pressed from the plate material. Efficient material removal is possible when processing.

According to the fourth aspect of the present invention, since the guide portion which expands forward is integrally connected to the front edge of the cylindrical contact portion, the DIN plug can be inserted at an insertion angle different from the axial direction of the DIN socket. Prevent insertion.

Since the notch concave portion is formed at the lower end of the guide portion, the guide portion that expands forward can be press-formed without using an extra material.

Further, the ground metal can be divided into the main ground metal and the auxiliary ground metal only by cutting between the notch concave and the U-shaped notch with the notch concave as a guide. Processing is easy.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a DIN socket according to the present invention will be described below with reference to FIGS.

FIG. 1 is an exploded perspective view of a DIN socket according to the present invention, FIG. 2 is a front view thereof, FIG. 3 is a bottom view thereof, and FIG.
Side view of a part of the N socket, FIG.
7 is a front view of the main grounding bracket and the auxiliary grounding bracket, FIG. 6 is a side view of the auxiliary grounding bracket, FIGS. 7A and 7B are rear views of the main grounding bracket and the auxiliary grounding bracket, and FIGS. ) Is the same bottom view.

As shown in FIGS. 1 to 4, the DIN socket according to the present invention comprises a socket housing 1 composed of a housing body 11 and a housing cover 12, four female contacts 8, a main grounding fitting 5, and an auxiliary And a grounding metal member 3 composed of a grounding metal member 6.

The housing body 11 is molded from an insulating plastic material such as PBT or nylon into a substantially rectangular parallelepiped shape at the rear and a cylindrical shape at the front, and the annular groove 2 is recessed from the cylindrical front toward the rear. ing.

In the contact accommodating portion 9 surrounded by the annular groove 2, a contact accommodating hole 13 for accommodating the contact portion 8a of each of the four female contacts 8 is formed so as to penetrate in the front-rear direction. A square hole 10a is formed below the center. The square hole 10a fits with the erroneous insertion preventing projection 73 (see FIG. 16) of the DIN plug 7 having four plug pins 72, and the position of the square hole 10a differs depending on the number of female contacts 8, and DIN plugs having different numbers of poles are prevented from being erroneously connected.

Further, in order to fit the DIN plug 7 on the cylinder to the DIN socket at a correct rotation angle, the positioning groove 10b which engages with the positioning ridge 74 of the DIN plug 7 around the contact accommodating portion 9 at 120 ° intervals. , 10c, 10
d is formed, and the positioning groove 10 formed on the upper surface thereof is formed.
b is a square groove having a shape different from that of the others.

As shown in FIG. 1, the female contact 8 is composed of a fork-shaped contact portion 8a and a terminal portion 8b which is bent downward at a right angle behind the contact portion 8a.

In the female contact 8, the contact portion 8a is inserted into the contact receiving hole 13 from the rear of the housing main body 11, and the terminal portion 8b is formed on the side of the T-shaped projection 14 projecting rearward of the housing main body 11. Engage the housing body 1
Temporarily fix to 1.

As shown in FIG. 3, the four female contacts 8
Since the female contacts 8 are arranged on the side surfaces of the T-shaped protrusions 14 in a state of being attached to the socket housing 1, the female contacts 8 are insulated from each other and do not short-circuit.

The housing cover 12, like the housing body 11, is molded from an insulating plastic material and has a U-shaped cross section so as to cover the upper surface, both side surfaces, and the back surface of the housing body 11.

On the upper surface of the housing cover 12, a locking spring piece 20 which locks with the retaining projection 15 of the housing main body 11 and prevents the cover from being removed is formed by cutting out a part of the upper surface.

Also, on the inner surface of the housing cover 12,
A guide ridge 17 is protruded, and a circular guide hole 18 is formed in the rear surface. The guide ridge 17 is engaged with the concave groove 16 and the boss 19 of the housing main body 11, respectively. It is fixed without sticking.

As shown in FIG. 4, when the housing cover 12 is attached from the back of the housing main body 11, the pressing ridge 21 of the housing cover 12 abuts on the terminal portion 8b of the female contact 8, and the terminal portion 8b is connected to the housing main body 11. Hold it between the back.

Next, the annular groove 2 of the socket housing 1
The main grounding metal fitting 5 and the auxiliary grounding metal fitting 6 to be inserted therein will be described.

The main grounding member 5 and the auxiliary grounding member 6 are obtained by cutting the cylindrical grounding member 3 shown in FIG. This cylindrical grounding member 3 will be described later.

As is clear from FIGS. 5, 7 and 8,
The divided main grounding member 5 and auxiliary grounding member 6 have semi-cylindrical contact portions 50 and 60, respectively, and have substantially symmetric shapes.

At the front edges of the semi-cylindrical contact portions 50, 60, guide portions 52, 62 expanding forward are integrally connected, and are formed in the annular grooves 2 on the side surfaces. Locking pieces 53 and 63 which are locking portions for locking with the locking holes 22 are cut and raised.

From the lower end of the semi-cylindrical contact portion 50 of the main grounding member 5, a terminal leg 51 is integrally provided downward from the lower end, and similarly, the lower end of the semi-cylindrical contact portion 60 of the auxiliary grounding member 6. From above, the switch terminal leg 61 is vertically provided integrally.

As shown in FIG. 1, the main grounding member 5 and the auxiliary grounding member 6 are configured such that a terminal leg 51 and a switch terminal leg 61 are respectively provided with a main slot 23 cut out from the front of the socket housing 1 and an auxiliary slot. 24, while being inserted into the annular groove 2 and attached.

At the position where the terminal leg 51 abuts on the rear end of the main slot 23, the locking piece 53 is locked with the locking hole 22 so that the main grounding metal 5 is prevented from slipping forward, and the main grounding fitting 5 is prevented from slipping forward. It is fixed in the groove 2.

Similarly, when the switch terminal leg 61 comes into contact with the rear end of the auxiliary slit 24, the locking piece 63 is locked with the locking hole 22 in the auxiliary grounding metal fitting 6, and Fixed to

At this time, the main grounding member 5 and the auxiliary grounding member 6 are mounted in the annular groove 2 while maintaining a predetermined gap.

A DIN plug 7 shown in FIG. 16 is connected to the DIN socket thus assembled.

The DIN plug 7 includes a sleeve metal member 71 formed by bending a conductive metal plate into a pipe shape. In the sleeve metal member 71, four plug pins 72 implanted in an insulating housing and an integral part of the insulating housing. The erroneous insertion prevention projection 73 protrudes.

The DIN socket positioning grooves 10b, 10c, 10
A positioning ridge 74 that engages with d is provided to project toward the center, and the rear of the sleeve metal member 71 is covered with an insulating plastic material such as vinyl chloride.

Prior to the connection of the DIN plug 7, the semi-cylindrical contact portions 50 and 60 of the main grounding metal member 5 and the auxiliary grounding metal member 6 act as make contacts of the switch, and the switch is in an open state.

When the DIN plug 7 is connected, the sleeve fitting 71 of the DIN plug 7 is brought into contact with the contact accommodating part 9 and the semi-cylindrical part by the main grounding fitting 5 and the guide parts 52 and 62 of the auxiliary grounding fitting 6 in the annular groove 2. And is electrically connected to the semi-cylindrical contact portions 50 and 60.

As a result, the sleeve fitting 71 bridges between the semi-cylindrical contact portions 50 and 60, the switch is closed, and the connection of the DIN plug 7 is detected.

Each positioning ridge 74 of the DIN plug 7 is D
When the angle of engagement with the positioning grooves 10b, 10c, and 10d of the IN socket is reached, the DIN plug 7 is further inserted, and the erroneous insertion prevention projection 73 of the DIN plug 7 is
a, and the plug pin 72 is electrically connected to the female contact 8 accommodated in the contact accommodating hole 13.

In the present embodiment, the socket housing 1 is constituted by the housing body 11 and the housing cover 12 attached from the back of the housing body 11. However, the present invention is not limited to this, and the female contact 8 is engaged with the socket housing. The socket housing 1 is attached to the socket housing 1 by providing
It may be constituted only by.

Next, the grounding member 3 of the DIN socket according to the present invention will be described with reference to FIGS.

FIG. 9 is a perspective view of the grounding metal, FIG. 10 is a front view thereof, FIG. 11 is a side view thereof, FIG. 12 is a bottom view thereof, and FIG.
Is a front view of the DIN socket provided with the grounding metal of FIG. 10, FIG. 14 is a bottom view thereof, and FIG. 15 is a side view thereof.

The ground metal member 3 is formed by punching a conductive metal plate into a substantially rectangular shape and then bending the metal plate along the longitudinal direction so as to form a cylindrical portion having an upper portion separated by a slit 41 as shown in FIG. It is formed in.

The rear of the cylindrical portion is the cylindrical contact portion 4 which comes into contact with the sleeve metal fitting 71 of the DIN plug 7, and the front edge of the cylindrical contact portion 4 has a guide portion 43 which expands forward.
Are connected continuously.

A notch recess 45 is formed at the lower portion of the guide portion 43 at the same time when the conductive metal plate is punched. By providing the notch recess 45, the guide portion 43 can be easily expanded forward. it can.

On both side surfaces of the cylindrical contact portion 4, locking pieces 40 as locking portions for locking with the locking holes 22 of the socket housing 1 are cut and raised.

As is clear from FIGS. 11 and 12, a U-shaped notch 4 is formed on the lower surface of the cylindrical contact portion 4 along the circumferential direction.
2, a switch terminal leg 61 is formed with the U-shaped notch 42 as an outline. U-shaped notch 4
2 has a notch 44 cut out from the rear end of the cylindrical contact portion 4, and the terminal leg 51 is formed by the U-shaped notch 42, the notch 44, and the rear end surface of the cylindrical contact portion. The intermediate portion of the terminal leg 51 is bent downward at a right angle.

The earth metal fitting 3 does not need to detect the insertion of the DIN plug, that is, is used for a normal DIN socket as shown in FIGS.

The structures of the housing main body 11, the housing cover 12, and the female contact 8 of the DIN socket shown in FIGS. 13 to 15 are completely the same as those of the above-described DIN socket having the switch detecting function. I do.

The ground metal fitting 3 is fitted and inserted into the annular groove 2 while the terminal leg 51 is inserted through the main slot 23 cut out from the front of the socket housing 1.

When the terminal leg 51 is inserted to a position where it abuts on the rear end of the main slot 23, the locking piece 40 is
With the socket housing 1
Fixed to When the earth metal fitting 3 is fixed to the socket housing 1, the cylindrical contact portion 4 can be expanded or contracted in diameter by the slit 41 in the annular groove 2, and acts as an elastic contact piece.

When the DIN plug 7 is inserted into the DIN socket, the sleeve metal fitting 71 of the DIN plug 7 is moved between the contact accommodating part 9 and the cylindrical contact part 4 by the guide part 43 of the earth metal fitting 3 in the annular groove 2. And is electrically connected to the cylindrical contact portion 4.

The positioning ridges 74 of the DIN plug 7
When the angle of engagement with the positioning grooves 10b, 10c, and 10d of the IN socket is reached, the DIN plug 7 is further inserted, and the erroneous insertion prevention projection 73 of the DIN plug 7 is
a, and the plug pin 72 is electrically connected to the female contact 8 accommodated in the contact accommodating hole 13.

When this earth metal fitting 3 is used for a DIN socket having a switch detecting function, a connecting portion between the notch concave portion 45 and the U-shaped notch 42 which is a lower portion of the cylindrical contact portion 4 (see FIG. At 12, the wavy line display section is cut.

Since the upper part of the earth metal fitting 3 is separated by a slit 41 and the lower part is separated by a U-shaped notch 42 and a notch 44, the U-shaped notch 42 is The earth metal fitting 3 can be divided into the main earth metal fitting 5 and the auxiliary earth metal fitting 6 by a simple process of cutting the gap.

From the divided auxiliary earthing metal fittings 6, FIG.
If the switch terminal leg 61 is cut and raised downward as shown in FIG.
The main grounding metal 5 and the auxiliary grounding metal 6 used for the N socket can be obtained.

Therefore, the earth metal fitting 3 can be used for any of the DIN sockets, and the press mold for the earth metal fitting can be shared.

Further, regardless of the presence or absence of the switch detection function, the structure other than the grounding bracket 3 is the same, and these parts can be used in common.
There is no need to use a different DIN plug for the N socket.

[0077]

As described above, according to the present invention, the main grounding member 5 and the auxiliary grounding member 6 of the DIN socket are housed in the annular concave groove 2 while being separated from each other. The semi-cylindrical contact portions 50 and 60 of the metal fitting 6 act as make contacts of the switch, and it is not particularly necessary to provide a switch mechanism for detecting DIN plug insertion. Therefore, the provision of the switch mechanism does not increase the size of the DIN socket.

When used as a DIN socket that does not require a switch detection function, the semi-cylindrical contact portion 50 of the main grounding metal fitting 5 comes into contact with the sleeve metal fitting 71 of the DIN plug 7 and is grounded. Therefore, without changing the configuration of the DIN socket, D
Can be shared with IN socket.

Further, the upper part of the cylindrical contact part 4 is flat with the axial direction.
Are separated by slits 41 formed in rows,
U-shaped notch from the rear end of the cylindrical notch 42 and the cylindrical contact part 4
Cuts 44 are formed continuously to one side of
Therefore, the front edge of the cylindrical contact portion 4 and the U-shaped notch 42
A simple processing that cleaves between the ground bracket 3 main A
Base metal 5 and auxiliary earth metal 6
You.

In particular, the upper part of the cylindrical contact part 4 has a cylindrical contact part.
A contact for causing the contact portion 4 to act as an elastic contact piece in the annular groove 2
Because it uses the lit 41, it is separated in advance and
Earth metal fittings 3 can be divided only by cutting
You.

The cylindrical contact portion before the cutting process is
DIN socket grounding bracket that does not require switch detection
Can be used as

Further, a DIN source having a switch detection function is provided.
DIN socket without socket and switch detection function
Uses common parts except for the grounding bracket.
Can be shared.

On the lower surface of the cylindrical contact portion,
U-shaped notch and U-shaped notch
Form a continuous notch to one side and loop the U-shaped notch
Cut and raise the switch terminal legs as a
Cut and erect the terminal legs with the notch and notch as contours
The terminal leg and switch terminal leg are formed from the cylindrical surface
Press the cylindrical contact part from the plate material.
Material can be efficiently taken out.

According to the second aspect of the present invention, the switch terminal leg 61 is cut and raised on the lower surface of the cylindrical contact portion 4 of the grounding member 3.
U-shaped notch 42 for
Notched along the circumferential direction, grounding metal 3
Is divided into a main grounding bracket 5 having a terminal leg 51 and an auxiliary grounding bracket 6 having a switch terminal leg 61,
It can function as a make contact of a switch for detecting the connection of the plug 7. Therefore, a switch detection function can be added to the DIN socket without increasing the number of parts.

Further, since the DIN socket earthing members 5 and 6 having the switch detection function can be manufactured from the DIN socket earthing member 3 having no switch detection function, a press die for molding the earthing member 3 can be used. Can be shared.

The third aspect of the present invention is directed to a cylindrical contact portion 4 separated by a slit 41 having an upper portion formed in parallel with the axial direction.
A U-shaped notch 42 from the rear end of the cylindrical contact portion 4
The notch 44 is formed so as to extend to one side, so that the ground metal 3 is connected to the main ground metal 5 by a simple process of cutting between the front edge of the cylindrical contact portion 4 and the U-shaped notch 42. It can be divided into the auxiliary earthing metal 6.

A switch terminal leg 61 is formed on the lower surface of the cylindrical contact portion 4 with the U-shaped notch 42 cut out along the circumferential direction as a contour, and the U-shaped notch 42 and the cylindrical contact Since the terminal leg 51 is cut and raised with the contour of the cut 44 continuous from the rear end of the portion 4 to one of the U-shaped notches 42, the terminal leg 51 and the switch terminal leg 61 can be formed from a cylindrical surface. This allows efficient material removal when the cylindrical contact portion 4 is pressed from a plate material.

According to the fourth aspect of the present invention, since the notch concave portion 45 is further formed at the lower end of the guide portion 43, the guide portion 43 which expands forward without using extra material is press-formed. Can be. Further, since the notch concave portion 45 is used as a guide to cut between the notch concave portion 45 and the U-shaped notch portion 42, the process of dividing the grounding metal member 3 becomes easy.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a DIN socket according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a bottom view of FIG. 1;

FIG. 4 is a side view in which a part of a DIN socket is cut.

FIG. 5A is a front view of an auxiliary earthing metal fitting.
(B) is a front view of the main grounding fitting.

FIG. 6 is a side view of an auxiliary grounding member.

FIG. 7A is a rear view of a main grounding member.
(B) is a rear view of the auxiliary grounding fitting.

FIG. 8A is a bottom view of an auxiliary grounding member.
(B) is a bottom view of the main grounding fitting.

FIG. 9 is a perspective view of a grounding member.

FIG. 10 is a front view of FIG. 9;

FIG. 11 is a side view of FIG. 9;

FIG. 12 is a bottom view of FIG. 9;

FIG. 13 is a front view of a DIN socket provided with the grounding metal of FIG. 9;

FIG. 14 is a bottom view of FIG.

FIG. 15 is a side view of FIG.

FIG. 16 is a perspective view of a DIN plug.

FIG. 17 is a front view of a conventional DIN socket.

FIG. 18 shows a grounding fitting used in a conventional DIN socket.

FIG. 19 shows a conventional DIN socket having a switch function.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Socket housing 2 Annular groove 3 Grounding metal 4 Cylindrical contact part 5 Main grounding metal 6 Auxiliary grounding metal 8 Female contact 9 Contact accommodation part 13 Contact accommodation hole 40 Engagement part 41 Slit 42 U-shaped notch 43, 52 , 62 guide portion 44 cut 45 notch recess 50, 60 semi-cylindrical contact portion 51 terminal leg 52 guide portion 61 switch terminal leg

Claims (4)

(57) [Claims] 1. A socket housing 1 having an annular groove 2 recessed from the front surface and a plurality of contact holes 13 formed in a contact housing 9 surrounded by the annular groove 2.
And the DIN plug 7
Contact portion 8a that contacts the plug pin 72 of the connector and a terminal portion 8b that is bent downward at the rear of the socket housing.
And a cylindrical contact part 4 housed in the annular groove 2 and elastically in contact with the sleeve fitting 71 of the DIN plug 7 inserted into the annular groove 2 and the outside of the socket housing 1. Earth metal fitting 3 having a protruding terminal leg 51
Are separated by a slit 41 having an upper part formed in parallel with the axial direction.
And a pair of engaging members which are engaged with the socket housing 1 on both side surfaces.
Stop portions 53 and 63 are provided.
U-shaped notch from the rear end of the cylindrical notch 42 and the cylindrical contact part 4
To form a continuous cut 44 to one side of the
Insert the cylindrical contact portion 4 with the front edge of the cylindrical contact portion 4 and a U-shaped notch.
And cut the grounding metal 3 into the main grounding metal.
5 and the auxiliary earthing bracket 6, and the switch terminal leg 61 is formed with the U-shaped notch 42 as an outline.
Cut and raise, U-shaped notch 42 and cut 44
The terminal leg 51 is cut and raised with the
1 and the switch terminal legs 61 are respectively connected to the socket housings.
A DIN socket characterized by projecting from a lower surface of a ring and accommodating a main earthing metal fitting 5 and an auxiliary earthing metal fitting 6 in an annular concave groove 2 so as to be separated from each other. 2. A cylindrical contact portion 4 housed in the annular groove 2 of the socket housing 1 and elastically contacting with the sleeve metal fitting 71 of the DIN plug 7 inserted into the annular groove 2. A terminal leg 51 protruding;
In the DIN socket grounding member 3 in which the upper portion of the cylindrical contact portion 4 is separated by a slit 41 parallel to the axial direction, a pair of locking portions 40 for locking the socket housing 1 on both side surfaces of the cylindrical contact portion 4. And the bottom surface
U-shaped notch 4 to cut and raise switch terminal leg 61
2 is cut along the circumferential direction adjacent to the terminal leg 51.
DIN socket grounding bracket characterized by lacking . 3. A continuous cutout 44 is formed from the rear end of the cylindrical contact portion 4 to one of the U-shaped cutouts 42, and the terminal leg 51 is downward with the U-shaped cutout 42 and the cutout 44 as outlines. 3. The DIN socket grounding metal according to claim 2 , wherein the metal is cut and raised. 4. A guide portion 43 which expands toward the front is integrally connected to a front edge of the cylindrical contact portion 4, and a cutout recess 45 is formed at a lower end of the guide portion 43. Claim 2
Or the earth metal fitting of the DIN socket of claim 3 .