JP3095329B2 - Electrical connector with coaxial connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an electrical connector having a coaxial connector.

[0002]

2. Description of the Related Art A coaxial connector having an external conductor formed by bending a metal plate so as to substantially surround an internal connector having an L-shape in the longitudinal direction is disclosed in, for example, Japanese Patent Application Laid-Open No.
There is one disclosed in 100276. In this known coaxial connector, as shown in FIGS. 14 and 15 of the accompanying drawings, an internal connector 53 is inserted from the front into an insertion hole 52 of an L-shaped block-shaped insulating housing 51, and a rear portion protruding outside the housing is provided. Connecting portion 54 downward (in the direction of arrow P)
To bend. The outer conductor 55 has side wall portions 57 on both sides of the top plate portion 56 so that a cross section in a plane perpendicular to the longitudinal direction is substantially U-shaped. As can be seen, the lid 59 extends rearward through the constricted neck 58.
Are extended, and a leg-shaped connecting portion 60 is provided at the tip of the lid portion 59. As shown in FIG. 14, the outer conductor 55 is fitted to the housing 51 in the direction of arrow Q, and bends the lid 59 and the connecting portion 60 projecting rearward from the housing 51 at the neck 58 in the direction of arrow R. , The housing 51
The rear opening is covered with the lid 59.
Thus, this coaxial connector is expected to provide better shielding by the outer conductor.

Further, in a composite connector combining a coaxial connector and another type of connector, for example, a normal flat connector, a hole in a side portion of a housing of the flat connector is provided.
2. Description of the Related Art There is known an assembly in which a coaxial connector having an external conductor attached to a separate housing is fitted thereto.

[0004]

However, the above-mentioned known coaxial connectors have the following problems.

The neck portion 58 is narrowly narrowed so that the lid portion 59 is easily bent at the neck portion 58. Therefore, the leg-shaped connecting portion 60 and the shield main body are electrically connected only by the thin neck portion 58. As a result, good high-frequency characteristics cannot be obtained.

Since the lid 59 is simply bent at the neck 58, the positional accuracy of the connecting portion 60 is not good, and it is often difficult to insert the connecting portion 60 into the hole of the circuit board.

[0007] The force and moment acting on the connecting portion 60 when mounted on the circuit board are supported by the thin neck portion 58, but the strength at the neck portion 58 is low, so that the neck portion 58 is easily deformed and the positional accuracy is poor. Will be done.

In the case of a composite electric connector assembled by inserting such a coaxial connector into a housing of another type of connector, the housing of the coaxial connector and the housing of the other type of connector are formed in different configurations. In addition to being expensive due to an increase in the number of steps and the number of parts, the two housings have dimensional accuracy with respect to each other, so that there is a problem in fitting.

The present invention solves the problems of the known coaxial connector and composite electric connector, and has an external conductor having a connection portion which is easy to manufacture, has good high-frequency characteristics, and has high mounting accuracy and high strength when mounted on a circuit board. Coaxial connector,
Particular a such coaxial connector, other types of connector and housing and to provide an economical composite electrical connector together.

[0010]

According to the present invention SUMMARY OF THE INVENTION The above object is, when incorporated in a housing made of an insulating material, the outer
A coaxial cable is formed by bending a metal plate so that the outer conductor substantially surrounds an internal connector having a L-shaped longitudinal shape .
An electrical connector having a connector, wherein a cylindrical portion having an opening at one end of an external conductor for penetrating an internal conductor of a mating connector and an external circuit member at the other end. A leg-shaped connecting part, and an intermediate part that connects the cylindrical part and the connecting part and substantially surrounds the internal connector, wherein the intermediate part is perpendicular to the longitudinal direction of the internal connector. The cross section at the surface is substantially U-shaped, and at least both side walls have a flat shape, and a V-shaped notch is formed in the side wall, which extends toward the side edge, and is closer to one end than the notch. intermediate portion at the portion after being incorporated in the housing are brought bent so edges to opposite notch portion comes into contact, the Haujin
Before bending the outer conductor of the coaxial connector at the notch
Into the external conductor from the connection part side to fit the intermediate part
And a U-shaped slit groove for
In addition, the housing is a method for inserting the outer conductor into the housing.
At the far end position, set the width of the slit groove to the middle of the outer conductor.
The elastic tongue that is slightly narrower than the plate thickness
This is achieved by the first invention that is formed at the opening edge . Also, instead of the elastic tongue of the first invention,
Plate-shaped protruding piece at the position where the ring forms the upper inner surface of the slit groove
It is formed to protrude backward, and the protruding piece can be bent at the base
The above object has also been achieved by the second invention.
It is. Further, the elastic tongue of the first invention is not provided.
At least, the part surrounded by the slit groove is
That it is in communication with the housing and is integrally formed
This is also achieved by the third invention.

[0011]

[0012]

According to the present invention, the outer conductor is fitted into the housing of the coaxial connector in which the inner connector is implanted, and the intermediate portion of the outer conductor is bent at the cutout. It is bent to the edge portion to opposite notch abut one another
, And the rigidity of the intermediate portion is increased. As a result, the connection portion maintains good positional accuracy and has high strength against external force. Further, the contact area at the opposing edge increases the conduction area. Also, the housing of the coaxial connector is
The part surrounded by a U-shaped slit groove for fitting is another type
And is integrated with the connector housing
Therefore, both housings are made by integral molding during molding.
Can be Furthermore, when inserting the outer conductor, the elastic tongue slides.
Since the slit width of the lit groove is narrowed,
A sealing effect is provided. When the nose is bent,
The sealing effect is improved.

[0013]

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a composite electric connector having a coaxial connector having an outer conductor according to the present embodiment, and reference numeral 41 denotes a mating connector connected thereto. First, the configuration on the mating side of the connectors 1 and 41 will be described.

The housing 2 of the connector 1 is made of an insulating material. As shown in FIG. 2, flanges 2A having projecting mounting legs 2B for mounting on a circuit board P or the like are provided on both sides. Have. The housing 2 is
A recess 3 having a rectangular cross section and opening forward is formed,
The recess 3 has a flat connector 4 and a coaxial connector 5.

The flat connector 4 has an arrangement plate 4A made of an insulating material at the center position of the recess 3 and a contact made of a conductive material in a groove 4C formed on the upper and lower surfaces of the arrangement plate 4A at a constant pitch. 4B is inserted. The contact 4B slightly protrudes from the surface of the array plate 4A. In addition, the array plate 4
A trapezoidal key groove 4D is also formed on the lower surface of A.

A coaxial connector 5, which will be described in detail later, is provided beside the flange 2A . A front portion of the coaxial connector 5 has a cylindrical portion 8 of an external conductor 7 made of a conductive material, which will be described later, formed on the outer periphery of a columnar portion 6 made of an insulating material such as a synthetic resin.
Is externally fitted. An insertion hole 9 for inserting a pin-shaped center conductor of a mating coaxial connector is formed in the center of the columnar portion 6.
Is formed, and inside the insertion hole 9, an internal connector to be described later which is connected by receiving the center conductor of the counterpart coaxial connector is accommodated.

On the lower inner surface of the housing 2,
A trapezoidal key portion 3A is formed corresponding to the key groove 4D of the array plate 4A.

On the other hand, the mating connector 41 has, at the front of a housing 42 made of an insulating material, a tubular section 43 having a rectangular cross section that fits into the recess 3 of the connector 1. A horizontally elongated receiving hole 44 for receiving the flat connector 4 of the connector 1 is formed in the center of the connector 1. When the flat connector 4 is received in the receiving hole 44, the flat connector 4 is inserted into the upper and lower inner surfaces of the receiving hole 44.
A plurality of contacts 44 made of a conductive material elastically contacting the plurality of contacts 4B on the upper and lower surfaces of the arrangement plate 4A.
B are arranged. Male coaxial connectors 45 are provided at both ends of the receiving hole 44. The connector 4
Reference numeral 5 has a cylindrical body 45A as an external conductor made of a conductive material and a male pin-shaped central conductor 45B at the center thereof.
The cylindrical body 45A is externally fitted to the cylindrical portion 8 of the external conductor 7 of the coaxial connector 5 of the connector 1 , and has a central conductor 45B.
Is inserted into the insertion hole 9 of the columnar portion 6 and connected to the internal connector.

The key groove 4D and the key portion 3A of the connector 1 are provided on the inner and outer surfaces of the lower portion of the cylindrical portion 43 of the housing 42.
Are formed with a key portion 44A and a key groove 43A, respectively.

Next, the composite electric connector 1 will be described in detail with respect to the coaxial connector 5.

As shown in FIG. 2, a columnar portion 6 for engaging a cylindrical portion 8 formed at the front of the outer conductor 7 of the coaxial connector 5 protrudes from the housing 2 of the connector 1. An inverted U-shaped slit groove 10 is formed in the bottom wall of the concave portion 3 around the base of the columnar portion 6 so as to penetrate backward as seen in FIG. In this embodiment, the slit groove 10 has a shape (inverted U-shape) forming three continuous sides of a square as shown in FIG. 2, and is behind the cylindrical portion 8 (rightward in FIG. 3). The flat connector 4 on the lower side
And the housing. In a portion surrounded by the inverted U-shaped slit groove 10, a connector hole 11 for inserting an internal connector described later from the rear as shown in FIG. 3 is provided in the insertion hole 9 of the cylindrical portion 8. And is formed in communication with.

The housing 2 has a plate-shaped protruding piece 12 projecting rearward at a position forming an upper inner surface of the inverted U-shaped slit groove 10. The protruding piece 12 is formed thin,
It is dimensioned to be bent without breaking at its base by applying an external force, and its size is such that it closes the connector hole 11 from behind when it is bent. ing. Further, the housing 2
In the lower part of the protruding piece 12, guide pieces 13 and 14 for inserting the internal connector and the external conductor 7 are formed. The columnar mounting leg 2B described above is provided on the lower surface of the housing 2 for fixing the mounting leg 2B to a circuit board or the like.

As shown in FIG. 4, the outer conductor 7 is formed by punching and bending a metal plate by pressing or the like, and the cylindrical portion 8 at the front end and the leg-like connecting portion 17 at the rear end described above. An intermediate portion 18 for connecting the two is integrally provided. The intermediate portion 18 has a top plate portion 18A and a side wall portion 18B so as to form an inverted U-shaped cross section adapted to the inverted U-shaped slit groove 10 formed in the housing 2 described above. The connection portion 17 is formed on an extension surface of the side wall portion 18B. A V-shaped notch 19 extending toward the lower edge is formed at an intermediate position in the longitudinal direction of the side wall portion 18B.
Are provided. At the top of the V-shaped notch 19, a thin notch groove 22 communicating with the notch 19 is formed in the top plate 18A so as to bend the intermediate portion 18 well. Have been.

After the outer conductor 7 is assembled in the housing 2, the V-shaped notch 19 is formed as shown in FIG.
Is bent at This bending is performed until the opposing edge of the notch 19 abuts or almost abuts.
B is pushed into and firmly engaged. As a result, the portions on both sides of the notch 19 are in contact with the opposing edge of the notch 19 and the projection 20A and the recess 20B to be electrically connected to each other with a large area, and the mechanical strength is improved. Even after receiving an external force, the deformation after bending is small. Thus, the tubular portion 8 and the connecting portion 17 are at right angles to each other.

FIGS. 6 and 7 show the internal connector 21. FIG. The internal connector 21 is formed by stamping and bending a metal plate by a press or the like, and is formed into an L-shaped flat plate as a whole in FIG. 6 and a middle portion is gently slanted in FIG. . The leg-like connecting portion 21A is shown in FIG.
Extending from the holding portion 23 downwardly in and has a contact portion 25 where the middle portion 24 forwardly is curved at its front end near the extending arm shape from the retaining portion 23. The holding part 23
The lower edge has a claw 26 for engaging with the holding groove 29 when pressed into the holding groove 29 formed in the connector hole 11 of the housing 2. Is the hole 27
Is formed, and a cut portion 2 is formed in a portion between the hole 27 and the lower edge.
Eight.

In this embodiment, each member is assembled in the following manner.

8 to 10, the internal connector 21
Is behind the connector hole 11 of the housing 2 (right side in FIG. 8).
Inserted from. Inserting the holding portion 23 of the internal connecting terminal 21
Are formed in the holding groove 29 formed on one inner surface of the connector hole 11.
The holding of the internal connector 21 is ensured by the locking of the claw portion 26 by press-fitting the holding portion 23 into the holding groove 29. The middle portion of the internal connector 21 is inclined, and the contact portion 25 at the front end is located substantially at the center of the connector hole 11 in the width direction (see FIG. 9).
When press-fitting into the holding groove 29 while holding the holding portion 23, the cut surfaces of the cutting portion 28 abut each other, and the pressing force is transmitted.

Next, the projecting piece 12 of the housing 2 is bent downward to substantially close the rear opening of the connector hole 11 as shown in FIG. Only a very small gap remains between the bent protruding piece 12 and the edge of the contact hole 11 and the internal connector 21 in the holding groove 29. A sealing material is applied to the gap, and the gap is completely closed.

On the other hand, the external conductor 7 is assembled from the front of the housing 2 so that the intermediate portion 18 is inserted into the slit groove 10, and the cylindrical portion 8 of the external conductor 7 is connected to the columnar portion 6 of the housing as shown in FIG. Is fitted to. In this state, a portion behind the notch 19 formed in the intermediate portion 18 projects from the slit groove 10. The external conductor 7 may be incorporated into the housing before the application of the sealing material or before the internal connector 21 is incorporated.

Next, the outer conductor 7 is bent at the notch 19. Projection 2 formed in notch 19 by bending
The recesses 20A and the recesses 20B are firmly fitted to each other to maintain their shape, and the opposing edges of the cutouts 19 are at least partially in contact with each other. Thus, the fitting of the projections 20A and the recesses 20B improves the strength of the bent and L-shaped outer conductor 7 and also increases the electrically conductive area.

In use, in FIG. 12, the center conductor of the mating connector enters from the insertion hole 9 and is elastically connected to the contact portion 25 of the internal connector 21 to be electrically connected.

The present invention is not limited to the illustrated example. For example, the present invention can be applied to a case where the coaxial connector 5 has two internal connectors. For example, as shown by a two-dot chain line in FIGS. 9 and 12, another internal connector 31 which is always in contact with the internal connector 21 is provided, and the center conductor of the mating connector is connected to the internal connector 21. The internal connector 2 when
The circuit can be opened apart from the other internal connector 31 by the elastic deformation of 1.

In that case, in the other internal connector 31,
The contact portion 32 formed at the front portion is appropriately determined as shown in the figure, but the portion behind the contact portion 32 is the above-described internal connector 2.
The same configuration as the one holding portion 23 and the connection portion 21A can be adopted. When such another internal connector 31 is used together with the internal connector 21, naturally,
The width of the protruding piece 12 bent to close the connector hole 11 is
The thickness is reduced by the thickness of the other internal connector 31.

Further, when the outer conductor 7 is inserted into the housing 2, a seal can be provided on the rear surface of the housing. As shown in FIG. 13, a slit 10A is formed along the edge on one side of the slit groove 10 at the outlet of the inverted U-shaped slit groove 10 into which the intermediate portion of the external conductor is inserted. An elastic tongue 10B is provided to slightly reduce the width. By doing so, the outer conductor 7
Is completely sealed at the rear surface of the housing at the time of insertion.

[0037]

As described above, according to the present invention, a V-shaped notch is formed in a side wall of an intermediate portion when an external conductor having an L-shape in a longitudinal direction is formed. The notch
Since the opposite edges of was Rukoto be bent so as to abut,
When the strength of the external conductor is further improved and the leg-shaped connection part is inserted into a circuit board or the like, it is not easily deformed by the insertion force, and the position of the connection part is accurate, so that the above-mentioned attachment is performed. The effect of smooth operation is obtained. Further, in addition to this, the opposing edges of the cutout portions are electrically in contact with each other, so that a large conductive area between the cylindrical portion at the front portion of the external conductor and the connection portion can be secured. As a result, it is possible to improve the work efficiency of assembling the circuit board and the high-frequency characteristics.

Further, in the present invention, the housing of the coaxial connector and the housing of another type of connector can be integrally formed, so that the cost can be reduced by reducing the number of assembly steps and the number of parts, and the conventional method can be realized. The problem that the assembling accuracy of the two housings is reduced due to the incorporation of the two housings is also solved. Furthermore, elastic tongues or protrusions
The sealing of the housing is improved by providing the above.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a part of a composite electric connector and a mating connector according to an embodiment of the present invention.

FIG. 2 is a front view of the connector of FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a perspective view of an outer conductor for a coaxial connector used in the connector of FIG. 1 before bending.

5 is a sectional view of the connector of FIG. 4 after bending.

FIG. 6 is a side view of an internal connector of the coaxial connector used for the connector of FIG. 1;

FIG. 7 is a bottom view of the internal connector of FIG. 6;

8 is a cross-sectional view when the outer conductor of FIG. 4 and the inner connector of FIG. 6 are incorporated in a housing.

9 is a sectional view taken along the line IX-IX in FIG.

FIG. 10 is a sectional view taken along line XX in FIG.

11 is a cross-sectional view when the outer conductor of FIG. 8 is bent at a notch.

12 is a sectional view taken along the line XII-XII in FIG.

FIG. 13 is a cross-sectional view showing a modification of the housing shown in FIG.

FIG. 14 is a sectional view showing a conventional coaxial connector in an exploded state.

FIG. 15 is a bottom view of the outer conductor of FIG. 14;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Composite electric connector 2 Housing 4 Various connectors (flat connector) 5 Coaxial connector 7 External conductor 8 Cylindrical part 10 Slit groove 10B Elastic tongue piece 17 Connection part 18 Intermediate part 18B Side wall part 19 Notch part 20A Projection part 20B Concave part 21 Internal connector

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shinji Shimizu 5-5-23 Osaki, Shinagawa-ku, Tokyo Hirose Electric Co., Ltd. (56) References JP-A-2-100276 (JP, A) JP-A-Hei 8-78104 (JP, A) JP-A-4-109577 (JP, A) JP-A-6-36829 (JP, A) JP-A-7-25590 (JP, U) JP-A-58-131569 (JP, A) U) JP-A-5-34685 (JP, U) JP-A-2-1299693 (JP, U) WO 94/16474 (WO, A1) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01R 24/00-24/18

Claims (4)

(57) [Claims] When 1. A built in a housing made of an insulator, made by bending a metal plate so that the external conductor is longitudinally shaped to substantially surround the internal connector to an L-shaped
An electrical connector having a coaxial connector while creating external
A cylindrical portion having an opening for penetrating the internal conductor of the mating connector at one end of the conductor, a leg-shaped connecting portion connected to an external circuit member at the other end, the cylindrical portion and the connecting portion; And an intermediate portion that substantially surrounds the internal connector, and the intermediate portion has a substantially U-shaped cross section in a plane perpendicular to the longitudinal direction of the internal connector, and at least both side walls have Each side wall portion has a V-shaped notch formed in the side wall portion and extending toward the side edge, and after being integrated into the housing at a portion on one end side of the notch portion, the intermediate portion is formed. The notch is bent so that the opposite edge of the cut
The housing has the outer conductor of the coaxial connector in the notch.
Before bending, insert from the connection part side of the external conductor to
U-shaped slit groove for fitting is formed through
And the housing is connected to the outer conductor by the housing.
Insert the groove width of the slit groove inside the external conductor
The elastic tongue, which is slightly narrower than the plate thickness at the
The coaxial core is formed at the opening edge of the groove.
An electrical connector having a connector. 2. The notch portion is engaged with an opposite edge of the notch portion.
Protrusions and recesses for stopping were provided, and the intermediate portion was bent
At this time, the protrusions and recesses are fitted and locked on almost the same plane.
An electrical connector having the coaxial connector according to claim 1 . 3. Incorporated in a housing made of an insulator
In this case, the external conductor has an L-shaped longitudinal connection
It is made by bending a metal plate so that it surrounds the child almost
Electrical connector having a coaxial connector,
One end of the conductor for penetration of the inner conductor of the mating connector
A cylindrical part with an opening and the other end connected to an external circuit member
The leg-shaped connecting part to be connected and the cylindrical part and the connecting part
And an intermediate portion substantially surrounding the internal connector.
In the above, the intermediate portion is in the longitudinal direction of the internal connector.
The cross section at a right angle is approximately U-shaped and at least both side walls are
Each has a planar shape, and the side wall is widened toward the side edge.
V-shaped notch is formed, and one end side of the notch is
After being assembled in the housing at the portion,
The notch is bent so that the opposing edges of the
The housing has the outer conductor of the coaxial connector in the notch.
Before bending, insert from the connection part side of the external conductor to
U-shaped slit groove for fitting is formed through
And the housing forms the upper inner surface of the slit groove.
A plate-shaped protruding piece is formed to protrude rearward, and the protruding piece is
An electrical connector having a coaxial connector characterized by being refractible . (4) Incorporated in a housing made of insulation
In this case, the external conductor has an L-shaped longitudinal connection
It is made by bending a metal plate so that it surrounds the child almost
Electrical connector having a coaxial connector,
One end of the conductor for penetration of the inner conductor of the mating connector
A cylindrical part with an opening and the other end connected to an external circuit member
The leg-shaped connecting part to be connected and the cylindrical part and the connecting part
And an intermediate portion substantially surrounding the internal connector.
In the above, the intermediate portion is in the longitudinal direction of the internal connector.
The cross section at a right angle is approximately U-shaped and at least both side walls are
Each has a planar shape, and the side wall is widened toward the side edge.
V-shaped notch portion is formed, and one end portion side of the notch portion is formed.
After being assembled in the housing at the portion,
The notch is bent so that the opposing edges of the
The housing has the outer conductor of the coaxial connector in the notch.
Before bending, insert from the connection part side of the external conductor to
A U-shaped slit groove for fitting is formed through,
The portion surrounded by the slit groove is a housing of another type of connector.
And is formed integrally with the
Electrical connector having a coaxial connector.