JPH0896898A - External conductor of coaxial connector and hybrid electrical connector having the coaxial connector - Google Patents

Abstract

PURPOSE: To provide an external conductor of simple structure and high strength having good high-frequency characteristics as well as a hydrid electrical connector having a coaxial connector with the external conductor and another type of a connector. CONSTITUTION: The intermediate section of an external conductor 7 has an approximately U-shaped cross section at a plane orthogonal with an internal connecting piece along the lengthwise direction thereof. Both side walls 18B of the conductor 7 are respectively formed flat. In addition, a V-shaped notch 19 expanding sideward is formed on the walls 18B. In this case, a coupling projection 20A and a recess 20B are formed on the opposite edges of the notch 19, and the intermediate section 18 is bent for allowing the contact of the opposite edges of the notch 19 after assembled into a housing at an end section other than the notch 19. Also, the projection 20A and the recess 20B are coupled to and engaged with each other approximately on the same plane.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite electrical connector having a coaxial connector outer conductor and a coaxial connector.

[0002]

2. Description of the Related Art A coaxial connector having an outer conductor formed by bending a metal plate so as to substantially surround an L-shaped internal connector in the longitudinal direction is disclosed, for example, in Japanese Unexamined Patent Publication No. Heisei 2 (1999) -264.
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. The connection part 54 of the downward (direction of arrow P)
Bend to. The outer conductor 55 has side wall portions 57 on both sides of the top plate portion 56 so that the cross section in a plane perpendicular to the longitudinal direction is substantially U-shaped. From the top plate portion 56, as shown in FIG. As can be seen, through the necked neck 58, the lid 59 is rearward.
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 in the housing 51 in the arrow Q direction, and the lid portion 59 and the connecting portion 60 projecting rearward from the housing 51 are bent in the arrow R direction at the neck portion 58. , The housing 51
The rear opening is covered with the lid 59.
Thus, this coaxial connector is expected to have a good shield due to the outer conductor.

Further, in a composite connector in which a coaxial connector and another type of connector, for example, an ordinary flat connector is combined, a hole in a side portion of a housing of the flat connector is
It is known that a separate housing is fitted with a coaxial connector having an outer conductor attached thereto to be assembled.

[0004]

However, the above known coaxial connector has the following problems.

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

Since the lid portion 59 is simply bent at the neck portion 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.

The force and moment acting on the connecting portion 60 at the time of mounting on the circuit board are supported by the thin neck portion 58. However, since the neck portion 58 has a low strength, the neck portion 58 is easily deformed and the positional accuracy is further deteriorated. Will be done.

Further, in the composite electric connector assembled by inserting the coaxial connector into the 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 structures. In addition to the increase in the number of steps and the number of parts, the cost becomes high, and the two housings have dimensional accuracy with respect to each other, which causes a problem in fitting.

The present invention solves the problems of the known coaxial connector and the composite electrical connector, and is a coaxial connector having a connection portion that is easy to manufacture, has good high frequency characteristics, and has high mounting accuracy and strength when mounted on a circuit board. The second object is to provide an economical composite electric connector having such a coaxial connector and having another type of connector and a housing integrated with each other.

[0010]

According to the present invention, the first object is to substantially enclose an internal connector having an L-shaped longitudinal direction when assembled in a housing made of an insulating material. An outer conductor formed by bending a metal plate as described above, which is connected to a cylindrical portion having an opening for penetrating an inner conductor of a mating connector at one end and an external circuit member at the other end. In the one integrally having a leg-shaped connecting portion and an intermediate portion that connects the tubular portion and the connecting portion and substantially surrounds the internal connector, the intermediate portion is perpendicular to the longitudinal direction of the internal connector. The cross section of the surface is substantially U-shaped, and at least both side wall portions are respectively flat, and a V-shaped cutout portion that widens toward the side edge is formed in the side wall portion. Protrusions and recesses for locking are provided on the side of After being incorporated in the housing, the intermediate portion is bent so that the opposite edges of the cutout portion come into contact with each other, and the protrusion and the recess are fitted and locked in substantially the same plane. It is achieved by the invention of.

A second object of the present invention is a composite electric connector having a coaxial connector and another type of connector, wherein the coaxial connector is constituted by the coaxial connector according to claim 1.
The housing is formed with a U-shaped slit groove through which the outer conductor of the coaxial connector is inserted from the connecting portion side of the outer conductor before bending in the cutout portion and the intermediate portion is fitted to the housing. A second aspect of the invention is that the portion surrounded by is communicated with the housing of another type of connector and is integrally formed.

[0012]

In the first aspect of the present invention having such a structure, the outer conductor is fitted in the housing of the coaxial connector in which the inner connector is implanted, and the middle portion of the outer conductor is bent at the notch. When the edges of the notch that face each other are bent until they come into contact with each other, the protrusions and the recesses provided on both edges are fitted and firmly engaged with each other, 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 surface between the protrusion and the recess and the contact surface at the opposite edge portion increase the conduction area.

According to the second aspect of the invention, the housing of the coaxial connector is integrally formed so that the portion surrounded by the U-shaped slit groove for fitting the outer conductor communicates with the housing of another type of connector. Therefore, both housings are made by integral molding at the time of molding.

[0014]

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

In FIG. 1, reference numeral 1 is a composite electric connector having a coaxial connector having an outer conductor of this embodiment, and 41 is a mating connector to be connected thereto. First, the structure on the fitting side of both connectors 1 and 41 will be described.

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

The flat connector 4 has an array plate 4A made of an insulating material at the central position of the recess 3 and a contact made of a conductive material in grooves 4C formed at a constant pitch on the upper and lower surfaces of the array plate 4A. 4B is inserted. The contactor 4B slightly projects from the surface of the array plate 4A. Also, 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 disposed beside the flange portion 4E. The front portion of the coaxial connector 5 has a cylindrical portion 8 of an outer conductor 7 which will be described later and is made of a conductive material on the outer periphery of a columnar portion 6 made of an insulating material such as synthetic resin.
Is fitted. An insertion hole 9 for inserting the pin-shaped center conductor of the counterpart coaxial connector is formed in the center of the columnar portion 6.
Is formed, and an internal connector, which will be described later, to be received and connected to the center conductor of the counterpart coaxial connector is housed inside the insertion hole 9.

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

On the inner and outer surfaces of the lower portion of the cylindrical portion 43 of the housing 42, the key groove 4D and the key portion 3A of the connector 1 are formed.
A key portion 44A and a key groove 43A, which are respectively fitted in, are formed.

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

As shown in FIG. 2, the housing 2 of the connector 1 is provided with a columnar portion 6 for engaging a cylindrical portion 8 formed in the front portion of the outer conductor 7 of the coaxial connector 5. An inverted U-shaped slit groove 10 is formed in the bottom wall portion of the recess 3 around the base of the columnar portion 6 so as to penetrate rearward as shown in FIG. As shown in FIG. 2, the slit groove 10 has a shape (inverted U-shape) which is continuous with a quadrangle in this embodiment, and is rearward of the tubular portion 8 (rightward in FIG. 3). ) Part is flat connector 4 on the lower side
It is integrated with the housing of. A connector hole 11 for inserting an internal connector, which will be described later, from the rear is provided in a portion surrounded by the inverted U-shaped slit groove 10 as shown in FIG. It is formed in communication with.

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

As shown in FIG. 4, the outer conductor 7 can be made by punching and bending a metal plate with a press or the like, and the above-mentioned front end cylindrical portion 8 and rear end leg-shaped connecting portion 17 are formed. And it has integrally the intermediate part 18 which connects both. 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 that fits the inverted U-shaped slit groove 10 formed in the housing 2 described above. The connecting portion 17 is formed on the extension surface of the side wall portion 18B. A V-shaped notch 19 that spreads toward the lower edge is formed at an intermediate position in the longitudinal direction of the side wall portion 18B, and a protrusion 20A and a recess 20B that engage with each other are formed at the opposing edges.
And are provided. At the top of the V-shaped notch 19, a thin cut groove 22 communicating with the notch 19 is formed in the top plate 18A so that the middle 18 can be bent easily. Has been done.

Before the outer conductor 7 is assembled into the housing 2, as shown in FIG. 5, the V-shaped notch 19 is formed.
Is bent at. This bending is performed until the opposite edges of the cutout portion 19 come into contact with or almost come into contact with each other, and the projection 20A is formed into the recess 20.
It is pushed into B and engages firmly. As a result, the portions on both sides of the cutout portion 19 come into contact with the opposite edges of the cutout portion 19 and the projections 20A and the recesses 20B to be electrically connected in 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.

The internal connector 21 is shown in FIGS. 6 and 7. The internal connector 21 is made by punching and bending a metal plate by a press or the like, and is formed as an L-shaped flat plate as a whole in FIG. . The leg-shaped connecting portion 21A is shown in FIG.
In the above, the intermediate portion 24 extends downward from the holding portion 23 and extends outward from the outer holding portion 23 in the shape of an arm, and has a curved contact portion 25 near the front end thereof. The holding part 23
The lower edge has a claw portion 26 for engaging with the holding groove 29 formed in the connector hole 11 of the housing 2 when it is press-fitted, and the central portion of the holding portion 23 has Is the hole 27
Is formed, and the 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 used.
Is behind the connector hole 11 of the housing 2 (right side in FIG. 8)
Inserted from. The insertion is performed such that the holding portion 23 of the internal connection 21 is guided by the holding groove 29 formed in one inner surface of the connector hole 11, and the holding groove 2 of the holding portion 23 is inserted.
When the claw portion 26 is locked by press-fitting into the inner connector 9,
Ensure retention of 1. The intermediate portion of the internal connector 21 is inclined, and the contact portion 25 at the front end portion has the contact hole 1
It is located substantially at the center of 1 in the width direction (see FIG. 9). When press-fitting into the holding groove 29 while holding the holding portion 23, the cutting surfaces of the cutting portion 28 are in contact with each other and the pushing force is transmitted.

Next, the protruding 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 projection 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 to completely close the gap.

On the other hand, the outer 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 outer conductor 7 is formed into the columnar portion 6 of the housing as shown in FIG. Be fitted to. In this state, the rear portion of the slit groove 10 is projected from the vicinity of the cutout portion 19 formed in the intermediate portion 18. The outer conductor 7 may be incorporated into the housing before the application of the sealing material or before the inner connector 21 is incorporated.

Next, the outer conductor 7 is bent at the notch 19. Projection 2 formed in the notch 19 by bending
The 0A and the recessed portion 20B are firmly fitted to each other and firmly hold their shape, and the opposite edges of the cutout portion 19 at least partially contact each other. Thus, the fitting of the projection 20A and the recess 20B improves the strength of the external conductor 7 that is bent into an L-shape, and also increases the electrically conductive area.

In use, in FIG. 12, the center conductor of the mating connector enters through the insertion hole 9 and is elastically connected to the contact portion 25 of the internal connector 21 for electrical connection.

The invention is not limited to the example shown. For example, the coaxial connector 5 can also be applied to one having two internal connectors. For example, as shown by the chain double-dashed line in FIGS. 9 and 12, another internal connector 31 which is in constant contact with the internal connector 21 is provided, and the center conductor of the mating connector and the internal connector 21 are connected. When the internal connector 2
The circuit can be opened by separating 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 in the front portion is appropriately determined as shown in the drawing, but the portion behind the contact portion 32 is the internal connector 2 described above.
The holding portion 23 and the connecting portion 22 of one can have the same form. When such another internal connector 31 is used together with the internal connector 21, it goes without saying that the width of the protruding piece 12 bent to close the connector hole 11 is larger than that of the other internal connector 31. It becomes narrower by the thickness.

Further, when the outer conductor 7 is inserted into the housing 2, the rear surface of the housing can have a sealing property. As shown in FIG. 13, the slit of the slit groove 10 is formed by forming a groove 10A 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 outer conductor is inserted. An elastic tongue 10B is provided so as to narrow the width slightly. By doing so, the outer conductor 7
Is completely sealed at the rear surface of the housing when it is inserted.

[0037]

As described above, the present invention forms a V-shaped notch in the side wall of the intermediate portion when forming an L-shaped outer conductor in the longitudinal direction as described above. Since the projecting portion and the recessed portion are provided at the opposite edges and the notch portion is bent to fit the projecting portion and the recessed portion, the strength of the outer conductor is further improved, and the leg-shaped connecting portion is connected to the circuit. When it is inserted into the board or the like, it is not easily deformed by the insertion force, and the position of the connecting portion is accurate, so that the above-mentioned insertion can be smoothly performed. Further, in addition to this, electrically, since the projecting portion and the recessed portion, or in addition, the opposing edges of the cutout portion are in contact with each other, the conduction area between the cylindrical portion at the front portion of the outer conductor and the connection portion is also large. Can be secured. as a result,
It is possible to improve the work efficiency of assembling on the circuit board and the high frequency characteristics.

Further, according to the present invention, the housing of the coaxial connector and the housing of the other type of connector can be integrally molded, so that the number of assembling steps and the number of parts can be reduced and the cost can be reduced. The problem that the assembly accuracy is lowered due to the assembling of both housings, which the connector has, is also solved.

[Brief description of 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 line III-III in 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 a coaxial connector used in the connector of FIG.

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

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

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

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

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

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

13 is a sectional view showing a modified example 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.

[Explanation of symbols]

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

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Shinji Shimizu 5-5-23 Osaki, Shinagawa-ku, Tokyo Hirose Electric Co., Ltd.

Claims (3)

[Claims] 1. An outer conductor formed by bending and forming a metal plate so as to substantially surround an internal connector whose longitudinal shape is L-shaped when incorporated in a housing made of an insulator, A tubular portion having an opening for penetrating the inner conductor of the mating connector at one end, a leg-shaped connecting portion connected to an external circuit member at the other end, and the tubular portion and the connecting portion are tied together. In the one integrally having an intermediate portion that substantially surrounds the internal connector, 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 wall portions are flat. V-shaped cutouts are formed on the side wall portion and spread toward the side edges, and projections and recesses for locking are provided on the facing edges of the cutouts. Also, the intermediate portion faces the cutout portion after being assembled in the housing at the portion on the one end side. An outer conductor of a coaxial connector, characterized in that the outer edge portion is bent so as to abut, and the projection and the recess are fitted and locked in substantially the same plane. 2. A composite electrical connector having a coaxial connector and another type of connector, wherein the coaxial connector is a connector.
Of the coaxial connector, the housing has a U-shaped slit groove through which the outer conductor of the coaxial connector is inserted from the connecting portion side of the outer conductor before bending at the cutout portion and the intermediate portion is fitted therethrough. A composite electrical connector having a coaxial connector, wherein the coaxial connector is formed so that a portion surrounded by the slit groove communicates with a housing of another type of connector. 3. The housing has an elastic tongue at the opening edge of the slit groove at a position forward of the insertion direction of the outer conductor, the elastic tongue making the groove width of the slit groove slightly narrower than the plate thickness in the intermediate portion of the outer conductor. A composite electrical connector having a coaxial connector according to claim 2, which is formed.