TWI605647B - Coaxial electrical connector - Google Patents

Description

Coaxial type electrical connector

The present invention relates to a coaxial type electrical connector used for connecting a cable-like signal transmission medium such as a thin-wire coaxial cable.

In general, as a signal transmission medium used for various electronic devices or electric devices such as mobile phones or smart phones, a cable-like signal transmission medium such as a thin-line coaxial cable is widely used for the cable-like transmission. A coaxial type electrical connector in which a signal transmission medium is efficiently connected to a printed wiring board is known. For example, in the coaxial type electrical connector described in the following Patent Document 1, an outer conductor case (shield case) made of a substantially hollow cylindrical member is attached to the outer side of the insulating case, and the outer case is attached to the outer case. The annular opening portion connects the cover portion so as to be openable and closable. And the cover portion which is originally open when the terminal portion of the cable-shaped signal transmission medium is connected is over-closed together with the inner conductor contact member disposed in the inner portion of the outer conductor case, so that the inner conductor is thereby closed The contact member is plastically deformed and bent, whereby the cable-like signal transmission medium is held in a state of being sandwiched, and is electrically connected.

According to the coaxial electrical connector having the above configuration, since the welding operation for connecting the cable-like signal transmission medium such as the coaxial cable to the internal conductor contact is omitted, the assembly workability is improved, and the welding material is solved. The environmental problems caused by disposal, etc., also have the advantage of eliminating the deviation of the characteristic impedance due to the difference in the amount of solder used.

However, the conventional coaxial type electrical connector has characteristics relating to the transmission signal due to the high frequency of the transmission signal in particular, or the rapid miniaturization or low-level development of the electrical connector. The impedance matching degree (VSWR) tends to be in a mismatched state, and it is gradually difficult to maintain good high frequency characteristics.

Patent Document 1: Japanese Laid-Open Patent Publication No. 2011-40262

Accordingly, it is an object of the present invention to provide a coaxial type electrical connector capable of stably obtaining good signal transmission characteristics with a simple configuration.

In order to achieve the above object, a coaxial electrical connector of the present invention is configured to include an insulating housing that connects a terminal portion of a cable-like signal transmission medium, and an outer conductor housing that covers an outer surface of the insulating housing. a substantially hollow cylindrical member mounted; and an inner conductor contact disposed in an inner region of the outer conductor shell in a radial direction; between the terminal portion of the cable-like signal transmission medium and the inner conductor contact member The wiring portion is disposed in an inner region of the outer conductor casing in the radial direction, and an annular opening portion of the outer conductor casing is connected to the casing for opening and closing the annular opening portion in an openable and closable manner The insulating housing is provided with an insulating pressing plate that is integrally opened and closed with the cover portion; and when the cover portion is closed to cover the annular opening portion of the outer conductor case, the insulating pressing plate forms a bend Deformation of the folded portion, whereby the tongue portion of the inner conductor contact is pressed into contact with the cable-like signal transmission medium by the pressing force of the insulating pressing plate a line portion; a position of a portion of the surface of the insulating pressing plate facing the terminal portion between the terminal portion of the cable-like signal transmission medium and the inner conductor contact member, and a groove recessed by a height difference a space portion formed by the inner wall of the groove; the space portion is disposed in an inner region of the outer diameter of the outer conductor shell, and The inner diameter dimension W1 in the width direction orthogonal to the extending direction of the cable-like signal transmission medium is smaller than the outer dimension W2 of the tongue-like portion of the inner conductor contact member in the width direction.

According to the invention having the above configuration, the insulating pressing plate is formed in a space portion formed by the inner wall of the groove recessed in the height difference manner, and is formed to face the inner portion of the outer conductor case in the radial direction. In the partial arrangement relationship, the impedance adjusting air layer formed by the space portion is disposed so as to face the wiring portion where the impedance mismatch is likely to occur, and the impedance matching degree of the important design elements of the electrical connector can be efficiently performed. The adjustment of (VSWR) enables the miniaturization or lowering of the electrical connector and at the same time facilitates the good transmission of the high frequency signal.

Further, the space portion in the present invention is preferably provided in a region extending from the wiring portion to the bent portion so as to extend along the cable-like signal transmission medium.

According to the invention having the above-described configuration, the portion of the bent portion of the insulating pressing plate that faces the outer conductor case in the radial direction can be more efficiently formed by forming the air layer for impedance adjustment in the space portion of the insulating pressing plate. Since the impedance is matched and the rigidity of the bent portion of the insulating pressing plate is lowered by the space portion, the bending operation of the insulating pressing plate can be easily performed without causing damage or the like.

Further, in the invention, it is preferable that the insulating pressing plate extends along an inner wall surface of the cover portion disposed to cover the annular opening portion of the shielding case; and an inner wall surface of the cover portion Forming a shell side groove portion opposite to the space portion.

According to the above configuration, in addition to the impedance matching effect generated by the space portion of the insulating pressing plate, the impedance matching is performed by the groove portion provided on the inner wall surface of the cover portion, so that the impedance matching can be further improved. Efficient and easy to carry out.

Further, in the invention, it is preferable that the space portion is formed by a through hole.

According to the above configuration, since the space portion is formed by the through hole which is easy to manufacture, it is possible to improve the manufacturing efficiency.

According to the invention as described above, the space portion disposed so as to face the wiring portion between the cable-like signal transmission medium and the inner conductor contact member is provided in the insulating pressing plate that is integrally opened and closed with the cover portion. In some cases, the wiring portion and the space portion are disposed in an inner region in the radial direction of the outer conductor casing, and the air layer for impedance adjustment formed by the space portion of the insulating pressing plate is disposed so as to easily generate an impedance. The matching wiring portion is configured in such a manner that the impedance matching degree (VSWR) can be adjusted efficiently, so that a good signal transmission characteristic can be stably obtained with a simple configuration, and the cost can be reduced and the electrical connector can be greatly improved. Reliability.

10‧‧‧ Plug connector (coaxial type electrical connector)

11‧‧‧Insulated housing

11a‧‧‧Insulated body

11b‧‧‧Insert Insertion

11c‧‧‧ Cable support

11d‧‧‧Insulation press plate

11e‧‧‧Space Department (through hole)

11f‧‧‧Bend

12‧‧‧Internal conductor contacts (signal contact members)

12a‧‧‧Upper side beam (tongue)

12b‧‧‧ Lower side beam (cable placement)

12b1‧‧‧ Connection monitoring hole

12c‧‧‧elastic springs

13‧‧‧Shielding shell

13a‧‧‧External conductor shell (ground contact member)

13a1‧‧‧Shell insertion

13a2‧‧‧ cable protection arm

13b‧‧‧Shell cover

13b1‧‧‧Connected components

13b2‧‧‧ front cover

13b3‧‧‧1st fixed retaining plate

13b4‧‧‧2nd fixed retaining plate

13b5‧‧‧3rd fixed retaining plate

13b6‧‧‧ falls into the suppression department

14‧‧‧ Shell side groove

14a‧‧‧Narrow groove

14b‧‧‧ wide slot

SC‧‧‧ Thin wire coaxial cable (cable signal transmission medium)

SCa‧‧‧Cable center conductor (signal line)

SCb‧‧‧ cable outer conductor (shield wire)

SCc‧‧‧ cable dielectric

SCd‧‧‧Outer coverings

20‧‧‧ plug connector (coaxial type electrical connector)

21‧‧‧Insulated housing

21a‧‧‧Insulated body

21b‧‧‧Insert Insertion

21c‧‧‧ Cable support

21d‧‧‧Insulation press plate

21e‧‧‧Space Department (concave groove)

21f‧‧‧Bend

22‧‧‧Internal conductor contacts (signal contact members)

22a‧‧‧Upper side beam (tongue)

22b‧‧‧lower side beam (cable placement)

22b1‧‧‧ Connection monitoring hole

22c‧‧‧elastic springs

23‧‧‧Shield shell

23a‧‧‧External conductor shell (grounding contact member)

23a1‧‧‧Shell insertion

23a2‧‧‧ cable protection arm

23b‧‧‧Shell cover

23b1‧‧‧Connected components

23b2‧‧‧ front cover

23b3‧‧‧1st fixed retaining plate

23b4‧‧‧2nd fixed retaining plate

23b5‧‧‧3rd fixed retaining plate

23b6‧‧‧ falls into the suppression department

24‧‧‧ Shell side groove

24a‧‧‧Narrow groove

24b‧‧‧ wide slot

Fig. 1 is a perspective view showing the appearance of a single coaxial type electrical connector (plug connector) to which a coaxial cable according to an embodiment of the present invention is attached from the front upper side.

Fig. 2 is a perspective view showing the appearance of the plug connector unit shown in Fig. 1 from the side surface side.

Fig. 3 is a perspective view showing the appearance of the plug connector unit shown in Figs. 1 and 2 from the lower side of the front side.

Figure 4 is a cross-sectional view taken along line IV-IV of Figure 2;

Fig. 5 is a longitudinal cross-sectional view taken along line V-V of Fig. 4.

Fig. 6 is a perspective view showing the appearance of a single thin-wire coaxial cable as an example of a signal transmission medium connected to a coaxial type electrical connector (plug connector) according to an embodiment of the present invention.

Fig. 7 is an external perspective view showing an initial open state (unconnected cable state) of a coaxial type electrical connector (plug connector) according to an embodiment of the present invention.

Fig. 8 is a front elevational view showing the coaxial type electrical connector (plug connector) shown in Fig. 7.

Fig. 9 is a side explanatory view showing the coaxial type electrical connector (plug connector) shown in Figs. 7 and 8.

Fig. 10 is a perspective view showing the appearance of an initial open state of a shield case unit used in a coaxial type electrical connector (plug connector) according to an embodiment of the present invention.

Figure 11 is a front elevational view showing the shield case unit shown in Figure 10.

Fig. 12 is a perspective view showing the appearance of an initial state of an insulating case unit used in a coaxial type electrical connector (plug connector) according to an embodiment of the present invention.

Fig. 13 is a side explanatory view showing the insulating case unit shown in Fig. 12.

Fig. 14 is a plan explanatory view showing the insulating case unit shown in Figs. 12 and 13;

Fig. 15 is an external perspective explanatory view showing a state in which the insulating pressing plate provided in the insulating case shown in Figs. 12 to 13 is bent.

Figure 16 is a side elevational view showing the insulating case unit shown in Figure 14.

Fig. 17 is a cross-sectional explanatory view corresponding to Fig. 4 showing a configuration of a coaxial type electrical connector (plug connector) according to another embodiment of the present invention.

Figure 18 is a longitudinal cross-sectional view taken along the line XVIII-XVIII in Figure 17.

Fig. 19 is a perspective view showing the appearance of an initial state of an insulating case unit used in a coaxial type electrical connector (plug connector) according to another embodiment of the present invention.

Hereinafter, an explanation will be given in detail of an embodiment in which the present invention is applied to a coaxial type electrical connector using a thin-wire coaxial cable as a signal transmission medium.

[About the overall structure of the coaxial type electrical connector]

First, the plug connector 10 of the coaxial electrical connector according to the first embodiment of the present invention shown in FIGS. 1 to 5 is connected to a terminal portion of a thin-wire coaxial cable SC as a cable-like signal transmission medium. Further, the object-side electrical connector (not shown) including a receptacle connector or the like that is mounted on a predetermined printed wiring board (not shown) is fitted or detached so as to be inserted from above. The fitting and detaching work of the plug connector 10 on the target side electrical connector (socket connector or the like) is performed in a direction substantially orthogonal to the plane of the printed wiring board.

More specifically, the connector body portion constituting the main fitting portion of the plug connector 10 is formed in a cylindrical shape in a schematic shape, and the connector body portion which is substantially cylindrical is radially outward. The terminal portion of the thin-wire coaxial cable SC is connected in one direction, and the plug connector 10 is disposed so as to be positioned above the object-side electrical connector (socket connector or the like) in a state in which the thin-wire coaxial cable SC is connected. By lowering the entire plug connector 10 in a direction substantially perpendicular to the outer surface of the printed wiring board, the lower end portion of the plug connector 10 is fitted to the upper end portion of the object side electrical connector. . In the above-described manner, by inserting the plug connector 10 into the fitting state of the object-side electrical connector from above, the terminal portion of the thin-wire coaxial cable SC is connected to the printed wiring substrate through the plug connector 10 and the electrical connector on the object side. Wiring pattern guiding circuit.

Here, the direction in which the plug connector 10 is inserted into the object-side electrical connector (socket connector or the like) is set to "downward direction", and the direction in which the plug connector 10 is pulled out is set to "upward direction". Further, in the plug connector 10 itself, the end edge portion on the end portion side of the connection thin-wire coaxial cable SC is referred to as a "front side edge portion", and the edge portion on the opposite side is referred to as a "back side". Further, the direction from the "back side edge portion" toward the "front side edge portion" is referred to as "connector front direction", and the reverse direction is referred to as "connector rear direction". Further, the direction orthogonal to both the "upper and lower direction of the connector" and the "front and rear of the connector" is referred to as "the left and right direction of the connector".

[About coaxial cable]

In particular, as shown in FIG. 6, the thin-wire coaxial cable SC as a cable-like signal transmission medium is a cable center conductor (signal line) SCa and a cable outer conductor (shield line) SCb formed by a plurality of wires. The line dielectric body SCc is formed by coaxially laminating, wherein the cable outer conductor (shield wire) SCb is exposed by peeling off the circumferential covering material SCd, and the cable center conductor (signal line) SCa is further borrowed. The cable outer conductor (shield wire) SCb and the cable dielectric body SCc are stripped and exposed.

Further, the cable center conductor SCa disposed along the central axis of the thin coaxial cable SC is connected to the inner conductor contact (signal contact member) 12 attached to the insulating case 11 to constitute a signal circuit. Further, the cable outer conductor SCb disposed so as to surround the outer peripheral side of the cable center conductor SCa is connected to the outer conductor case 13a of the shield case 13, and the outer conductor case 13a functions as a contact for grounding to constitute a ground. Circuit.

[About Insulation Housing]

Here, as shown in FIG. 5, the insulating case 11 has a substantially disk-shaped insulating body portion 11a constituting a connector body portion of a main fitting portion, and a lower side portion of the insulating body portion 11a. Integrated with an electrical connector (socket connector, etc.) inserted as a fitting object The insulating insertion portion 11b on the inner side. A substantially central portion of the insulative housing portion 11a is mounted so as to be placed on the end portion of the thin coaxial cable SC, and is used to mount the cable center conductor (signal line) SCa of the thin coaxial cable SC. The inner conductor contact (signal contact member) 12 is attached to a portion where a substantially central portion of the upper surface of the insulating body portion 11a is formed in a concave shape.

Further, the outer conductor case 13a of the shield case 13 as a ground contact member is attached to the above-described insulating body portion 11a so as to surround the periphery of the inner conductor contact 12 described above from the outer side. Further, at the front end edge portion of the insulative housing portion 11a, a cable support portion 11c (refer to FIG. 7) formed by a groove having a substantially semicircular shape as viewed in a front view is formed, and at the cable support portion 11c The inner side of the wall side carries and carries the terminal portion of the thin-wire coaxial cable SC.

Further, the insulating main body portion 11a of the insulating case 11 is integrally provided with an insulating pressing plate 11d composed of a tongue-like member so as to cover the cable center conductor SCa of the thin coaxial cable SC from the upper side. The insulating pressing plate 11d is formed of an elongated flat member protruding from the end edge of the connector rear end side of the insulating body portion 11a in a cantilever manner along the thin coaxial cable SC, especially as shown in FIG. 12 to FIG. As shown in Fig. 14, in the initial state before the terminal portion of the thin coaxial cable SC is placed, the insulating pressing plate 11d is in an open state in which it rises upward. Further, after the terminal portion of the thin-wire coaxial cable SC is attached to the insulating case 11, as described below, the bent portion 11f which is bent downward from the case cover portion 13b provided in the shield case 13 and formed therefrom is formed as follows. The portion extending in a flat shape is disposed so as to overlap from the upper side along the thin-line coaxial cable SC.

Here, in the region of the base portion side of the insulating pressing plate 11d extending in a cantilever shape as described above, the region extending in the direction in which the thin-line coaxial cable SC extends is elongated. The space portion 11e formed by the holes. The space portion 11e is recessed from the surface of the insulating pressing plate 11d in the thickness direction by a substantially central portion of the insulating pressing plate 11d in the width direction orthogonal to the extending direction of the thin-line coaxial cable SC. The inner wall surface of the groove (the through hole in the present embodiment) is formed. Further, as shown in FIG. 15 and FIG. 16, when the insulating pressing plate 11d is bent downward and disposed above the thin coaxial cable SC, the space portion 11e is disposed on the insulating pressing plate 11d. The inner wall surface of the portion 11e is formed in an elongated air layer, and is disposed from the upper side surface to the electrical connection region of the cable center conductor (signal line) SCa and the inner conductor contact 12, that is, the "wire connection portion".

The space portion 11e formed of the through hole as described above is disposed in the inner side in the radial direction of the outer conductor case (ground contact member) 13a, but is formed in the width direction of the space portion 11e as shown in Fig. 4 ( The inner diameter W1 of the direction orthogonal to the extending direction of the thin coaxial cable SC is smaller than the width of the upper side beam portion (the tongue portion) 12a which is a part of the inner conductor contact (signal contact member) 12. The dimension outside the direction is W2 (W1 < W2). The structure of the upper side beam portion (tab portion) 12a of the inner conductor contact 12 will be described later in detail, but the upper side beam portion 12a is formed to be pressed from the upper side to the thin line coaxial by forming the tongue portion. The cable SC has a structure in which the "wiring portion" of the thin coaxial cable SC is formed.

Further, the insulating pressing plate 11d is bent downward by the magnitude relationship (W1 < W2) of the width dimension of the space portion 11e with respect to the upper side beam portion (tab portion) 12a of the inner conductor contact 12 described above. At the time of folding, the relationship is abutted against the inner conductor contact 12, whereby the two members 11d and 12 are integrally bent.

Here, as described above, the space portion 11e provided in the insulating pressing plate 11d is disposed, as shown in FIG. 5, from the upper side surface to the cable center conductor of the thin-line coaxial cable SC (signal) The state of the electrical connection region between the line SCa and the inner conductor contact 12, that is, the "wiring portion", further from the position facing the "wiring portion" toward the rear side of the connector, that is, the base portion side of the insulating pressing plate 11d The extension extends so as to be curved along the bent portion 11f formed on the insulating pressing plate 11d, and then extends downward.

On the other hand, the insulative housing portion 11a of the insulative housing 11 constituting the main fitting portion including the above-described insulating pressing plate 11d is formed of a substantially hollow cylindrical shape that integrally protrudes downward from the insulative housing portion 11a. As described above, the insulating insertion portion 11b is configured such that the lower end side of the insulating insertion portion 11b is inserted toward the inner side of the object-side electrical connector (socket connector or the like) to be fitted.

[About shield case]

Further, as shown in FIGS. 10 and 11, the outer surface of the insulating case 11 having the insulating main body portion 11a and the insulating insertion portion 11b is covered by an outer conductor case 13a made of a thin metal member, the outer portion The conductor case 13a constitutes a main fitting portion of the shield case 13. The outer conductor case 13a mainly constitutes a substantially hollow cylindrical ground contact member formed so as to cover the insulative housing portion 11a of the insulating case 11 in an annular shape from the outer side in the radial direction. Further, the lower side portion of the outer conductor case (ground contact member) 13a is a case insertion portion 13a1 that annularly covers the above-described insulating insertion portion 11b from the outer side in the radial direction, and is on the upper end of the outer conductor case 13a. The annular opening portion on the side is connected to the cover portion 13b for covering the upper surface side of the above-described insulating body portion 11a in an openable and closable manner.

At this time, the shield case 13 in the initial state before the terminal portion of the thin-wire coaxial cable SC is connected and fixed, in particular, as shown in FIGS. 7 to 12, becomes the case cover portion 13b with respect to the above The outer conductor case 13a is open to the upper side. In other words, the cover portion 13b in the initial state is disposed on the side edge portion of the outer conductor case 13a after the connection member 13b1 composed of the narrow plate-like member has been vertically raised vertically. Further, the inner surface of the cover of the cover portion 13b, that is, the inner side of the cover portion 13b is closed, and the insulating housing 11 is disposed along the inner surface of the cover of the cover portion 13b. An insulating pressing plate 11d composed of a tongue-shaped member that rises upward from the insulating main body portion 11a. Further, the installation position and the number of settings of the connecting member 13b1 can be arbitrarily selected.

In the open state (initial state) of the shield case 13 as described above, the terminal portion of the thin-wire coaxial cable SC is placed and mounted by the cable support portion 11c of the insulating housing 11, and the connecting member is 13b1 is bent at a substantially right angle toward the lower side with the insulating pressing plate 11d to press the cover portion 13b of the shield case 13 to a substantially horizontal state, whereby the entire insulating body portion 11a of the insulating case 11 is covered by the case. The lid portion 13b is covered from the upper side, and the shield case 13 is in a closed state.

At this time, the cover portion 13b is configured to cover the annular opening portion covering the upper end side of the outer conductor case 13a when it is pressed down to a substantially horizontal state and is closed, and is overwhelmed to the approximate level. The front side portion of the cover portion 13b of the state is integrally provided with a front cover portion 13b2 covering the thin-wire coaxial cable SC from the upper side, in particular, the cable dielectric body SCc and the cable outer conductor (shield line) SCb. The front cover portion 13b2 is configured to cover the pair of cable protection arms 13a2 and 13a2 projecting from the outer side of the outer conductor case 13a toward the front side from the outer side with the thin wire coaxial cable SC.

At this time, the cable protection arms 13a2, 13a2 are configured to extend along both sides in the left-right direction sandwiching the thin-wire coaxial cable SC, and are provided with the pair of cable protection arms 13a2. 13a2 protrudes toward the front side from the front end edge portion of the outer conductor case 13a along the end portions of the thin wire coaxial cable SC so as to face each other substantially in parallel.

In addition, the both side edges of the front cover portion 13b2 which are provided so as to protrude from the front side of the cover portion 13b as described above are provided with a pair of tongue-like members in a flange-like shape. 1 fixed holding plate 13b3, second fixed holding plate 13b4, and third fixed holding plate 13b5. The first fixed holding plate 13b3 is configured to be bent and swaged so as to cover the thin coaxial cable SC and the cable protection arms 13a2 and 13a2 from the outer side.

That is, the flange plates on both sides of the pair of first fixed holding plates 13b3, 13b3 are located outside the cable protection arms 13a2, 13a2 when the cover portion 13b is pressed down to a substantially horizontal state. In the manner of swaging from this state, the outer wall surfaces of the cable protection arms 13a2, 13a2 are bent toward the inner side of the connector, thereby performing the cover portion 13b with respect to the outer conductor case 13a. It is fixed, and the thin-wire coaxial cable SC, in particular, the cable dielectric body SCc is fixed to the case cover portion 13b.

Further, the second fixed holding plate 13b4 and the third fixed holding plate 13b5 are provided adjacent to each other on the front side of the first fixed holding plate 13b3, and are formed of a relatively small flange plate. The second fixed holding plate 13b4 and the third fixed holding plate 13b5 are bent so as to cover the cable outer conductor (shield wire) SCb and the outer peripheral covering material SCd in the thin coaxial cable SC from the outer side. The composition of the swage is fixed.

That is, the flange plates on both sides of the second fixed holding plate 13b4 and the third fixed holding plate 13b5 are arranged such that the cable is located in the thin coaxial cable SC when the cover portion 13b is pressed down to a substantially horizontal state. The outer conductor (shield wire) SCb and the outer peripheral covering material SCd are disposed outside the both sides, and are swaged from the inner side of the connector so as to be swaged from this state. Take this The case cover portion 13b is fixed to the cable outer conductor (shield wire) SCb and the outer peripheral covering material SCd of the thin wire coaxial cable SC, and constitutes a shield case by bringing the cable outer conductor SCb into contact with the second fixed holding plate 13b4. 13 formed ground circuit.

On the other hand, the case insertion portion 13a1 constituting the lower side portion of the shield case 13 as described above is formed so as to be externally fitted to the outer side portion of the target connector (socket connector or the like) to be fitted, and inserted. The insulating insertion portion 11b of the insulating case 11 on the inner side in the radial direction of the above-mentioned target connector constitutes a connector connecting portion. More specifically, the case insertion portion 13a1 is formed in a substantially cylindrical shape, and a lower end portion of the insertion side of the case insertion portion 13a1 is formed to be joined by an annular groove projecting toward the inner side in the radial direction. unit. Then, after the case cover portion 13b is pushed down to a substantially horizontal state as described above, the connection engagement portion is elastically fitted to the connection engagement portion (not shown) of the target connector which is a fitting target. .

[About signal contact components]

Further, the inner conductor contact (signal contact member) 12 used in the present embodiment is attached to the insulative housing portion 11a of the above-described insulating housing 11 by press fitting or insert molding, and has a connection to a thin coaxial cable. A cable holding portion of the pair of upper and lower side beam portions 12a and 12b of the cable center conductor (signal line) SCa of the SC, and extending downward from the lower side beam portion 12b of the cable holding portion The elastic spring portion 12c provided in such a manner elastically contacts the conductive contact (not shown) provided in the fitting connector (socket connector or the like) to be fitted.

The side sill portion 12a and the lower side sill portion 12b constituting the cable nip portion are formed of a continuously extending strip-shaped member, and are formed in a substantially C-shape or a substantially L-shape when viewed from the side. Clip beam construction. Moreover, by linking the two as follows The portion is bent and deformed in a direction in which the upper side beam portion 12a is adjacent to the lower side beam portion 12b, and the cable center conductor (signal line) SCa of the thin-line coaxial cable SC is sandwiched between the two beam portions 12a, 12b from the top and bottom in a clip shape. Between them, the structure of the "wiring portion" mentioned in the present invention is formed.

At this time, the cable nip portion upper side beam portion 12a is in an initial state before the end portion of the thin-wire coaxial cable SC is connected, and as shown in FIGS. 7 to 9, the yoke is raised upward. The tongue-like portion is formed in a state in which the upper side beam portion 12a as the tongue-like portion is opened upward, and is separated from the lower side beam portion 12b.

On the other hand, the cable holding portion lower side beam portion 12b is formed as a cable mounting portion on which the cable center conductor SCa of the thin coaxial cable SC is placed, and the upper side beam portion (the tongue portion) The connecting portion of the 12a connection extends substantially horizontally toward the front side of the connector. Further, when the terminal portion of the thin coaxial cable SC is placed on the cable supporting portion 11c of the insulating case 11 as described above, the cable center conductor SCa of the thin coaxial cable SC is placed on the cable from the upper side. The surface of the side beam portion 12b below the clamping portion.

After the terminal portion of the thin-wire coaxial cable SC is placed in the cable support portion 11c of the insulating case 11 in the above manner and is mounted, the cover portion 13b of the shield case 13 is pushed down together with the above-described insulating pressing plate 11d to In the substantially horizontal state, the upper side beam portion (the tongue-like portion) 12a of the cable holding portion pressed by the insulating pressing plate 11d to the lower side is bent and deformed so as to be in a substantially horizontal state, and the upper side beam is bent. As shown in FIG. 5, the portion 12a is configured to press the cable center conductor (signal line) SCa from the upper side.

Here, an upper electrode portion that presses the cable center conductor (signal line) SCa from the upper side is formed at a position intermediate the extending direction of the upper side beam portion (tab portion) 12a constituting the cable holding portion. The upper electrode portion of the side beam portion 12a is disposed on the signal contact member 12 to form a clip The curved shape in which the thin coaxial cable SC protrudes downward is formed, and the lower curved portion is a protruding contact portion that protrudes toward the thin coaxial cable SC side. When the cover portion 13b is pushed down to a substantially horizontal state as described above, the protruding contact portion is crimped to the cable center conductor of the thin coaxial cable SC attached to the lower side member 12b from the upper side (signal) In the configuration of the line SCa, the cable center conductor (signal line) SCa is crimped between the two beam portions 12a and 12b, and is electrically connected.

As described above, in the present invention, the cable center conductor (signal line) SCa of the thin-wire coaxial cable SC is connected to the electrical connection region of the inner conductor contact (signal contact member) 12 as the "wiring portion" in the above manner. "."

Further, the lower side rail portion 12b provided as the cable mounting portion of the inner conductor contact 12 described above extends forward from the connecting portion connected to the tongue-shaped portion upper side rail portion 12a. The plate-like member is formed and fixed in a state where it has been placed on the upper surface of the insulating body portion 11a in the above-described insulating case 11. A connection monitoring hole 12b1 having a circular hole shape is formed in a substantially central portion of the lower side beam portion 12b, and a target side is formed in the insulating case 11 so as to be substantially coaxial with the connection monitoring hole 12b1. The connector of the connector is inserted into the hole. The contact insertion hole of the object side connector functions as a connection monitoring hole, and the cable center conductor (signal line) SCa of the thin wire coaxial connector SC can be visually viewed from the lower side through the connection monitoring hole 12b1 described above. Configuration status.

Further, as described above, the cable holding portion lower side sill portion 12b is formed by a strip-shaped member extending in the front-rear direction of the connector, and is in the plate width direction (left-right direction) of the lower side sill portion 12b. The pair of elastic spring portions 12c and 12c are integrally extended toward the lower side at a predetermined interval so as to extend the pins of the target connector (socket connector, etc.). The shape of the signal conductive contact (not shown) is inserted into the portion between the two elastic spring portions 12c and 12c in a crimped state and is electrically connected.

When the cover portion 13b of the shield case 13 which is in the upper open state as described above is pressed downward toward the lower side, the insulating pressing plate 11d of the insulating case 11 which is opened upward in the initial state is similarly The lower side is in a pressure-contact state with respect to a predetermined area in the inner surface of the cover of the case cover portion 13b, and then gradually pressed down to a substantially horizontal state together with the case cover portion 13b. Further, the cover portion 13b and the insulating pressing plate 11d are transmitted through the side beam portion (tab portion) 12a of the inner conductor contact (signal contact member) 12, and are arranged in a stacked manner on the cable center conductor (signal) Line) The upper side of SCa. At this time, in the opposing region where the inner surface of the cover of the cover portion 13b is pressed against the insulating pressing plate 11d, the elongated shell side groove portion is provided so as to extend along the cable-like signal transmission medium SC toward the front-rear direction of the connector. 14.

The shell side groove portion 14 in the present embodiment has a configuration in which one of the inner surfaces of the case cover portion 13b is recessed in the thickness direction, and the inside of the case side groove portion 14 is formed. The air layer formed on the wall surface is disposed to face the air layer formed by the space portion 11e of the insulating pressing plate 11d from above. Further, by the arrangement relationship in which the shell-side groove portions 14 and the space portion 11e are opposed to each other in the vertical direction, the portions between the two members 14 and 11e are formed in an overlapping state for adjustment. The air layer that transmits the impedance of the signal.

The shell side groove portion 14 in the present embodiment is formed by, for example, press working, and is provided by thinning the groove thickness of the case cover portion 13b corresponding to the case side groove portion 14, but it is also There is a case where the adjustment amount of the apparent impedance is not provided for the case side groove portion 14.

Further, as described above, the case-side groove portion 14 extends along the cable-like signal transmission medium SC, and the extension of the longitudinal direction of the case-side groove portion 14 is set to be guided from the inside. The rear end portion of the body contact member (signal contact member) 12, that is, the connecting portion between the lower side beam portion (cable mounting portion) 12b and the upper side beam portion (tab portion) 12a, to the cable-like signal transmission medium The range of the position above the portion where the dielectric body SCc of the SC is exposed.

More specifically, as shown in FIG. 10 and FIG. 11, in particular, the configuration of the case-side groove portion 14 in the present embodiment is provided in a linear manner continuously: in the case of electrically connecting the thin-wire coaxial cable SC a region of the cable center conductor SCa, that is, a narrow groove portion 14a above the wiring portion, and a wide groove portion 14b located above the dielectric body SCc of the thin-line coaxial cable SC; and a narrow portion of the wiring portion disposed in the electrical connection region The groove portion 14a has a groove width smaller than the above-described insulating pressing plate 11d having a plate width in the electrical connection region.

Further, the region corresponding to both sides in the groove width direction of the case-side groove portion 14 becomes the inner surface of the cover of the case cover portion 13b, and the case cover portion 13b which is disposed on both sides of the narrow groove portion 14a of the above-mentioned connection portion is provided. The inner surface of the cover is a drop-in suppressing portion 13b6 that abuts against the upper surface of the insulating pressing plate 11d from the upper side. In other words, the fall-inhibition portion 13b6 is placed on the upper surface of the insulating pressing plate 11d so as to be stacked above the insulating pressing plate 11d. Therefore, the insulating pressing plate 11d can be placed without being placed in the housing. The inside of the narrow groove portion 14a of the electrical connection region of the air layer formed by the side groove portion 14 is formed, and the case side groove portion 14 is surely formed in the electrical connection region.

On the other hand, the groove width of the wide groove portion 14b is larger than the plate width of the insulating pressing plate 11d, and the insulating pressing plate 11d of the present embodiment extends only in the extending length direction to the position of the narrow groove portion 14a. The wide groove portion 14b is opposed to each other. Therefore, even in the closed state in which the cover portion 13b of the shield case 13 has been overwhelmed, the insulating pressing plate 11d does not enter the inside of the wide groove portion 14b, and the insulating pressing plate 11d is held to be crimped to the cover portion over the entire length. The laminated state of the inner surface of 13b. Further, above the insulating pressing plate 11d, the case cover portion 13b is maintained in a stacked state, and the case is The side groove portion 14 is disposed immediately above the insulating pressing plate 11d.

Further, the wide groove portion 14b formed with another region of the case-side groove portion 14 slightly separated from the electrical connection region, that is, the wiring portion, is disposed as described above in correspondence with the exposed portion of the dielectric body SCc in the thin-wire coaxial cable SC In the position, the wide groove portion 14b has a groove width which is formed to be slightly larger than the outer diameter of the dielectric body SCc of the thin wire coaxial cable SC. Therefore, the dielectric body SCc of the thin-wire coaxial cable SC is housed inside the wide groove portion 14b of the case-side groove portion 14, thereby reducing the height of the connector.

Further, as described above, the wide groove portion 14b has a groove width which is set larger than the plate width of the insulating pressing plate 11d, and is set larger than the plate width of the inner conductor contact 12 in the electrical connection region. Further, the groove width of the narrow groove portion 14a constituting a portion of the shell side groove portion 14 as described above is set to be in contact with the cable center conductor (signal line) SCa of the cable-like signal transmission medium SC, that is, the inner conductor. The wire contact portion of the member (signal contact member) 12 has the same wire diameter or more than the wire diameter. Further, the groove width of the narrow groove portion 14a constituting the other portion of the shell side groove portion 14 is set to be smaller than the plate width of the upper side beam portion 12a of the inner conductor contact (signal contact member) 12.

According to the present embodiment having the above-described configuration, the space portion 11e formed on the inner wall surface of the through hole of the insulating pressing plate 11d is disposed in the inner region in the radial direction of the outer conductor case 13a of the shield case 13, and becomes The arrangement relationship of the electrical connection region of the cable center conductor (signal line) SCa and the inner conductor contact 12, that is, the wiring portion. Therefore, the air layer for impedance adjustment formed by the space portion 11e is disposed so as to face the wiring portion where impedance mismatch is likely to occur, and impedance matching, which is an important design element of the electrical connector, can be efficiently performed. The adjustment of the degree (VSWR) enables the miniaturization or low height of the electrical connector while maintaining the good transmission of the high frequency signal.

In particular, in the present embodiment, the space portion 11e provided in the insulating pressing plate 11d extends to the region of the insulating pressing plate 11d that reaches the bent portion 11f, and thus also the outer conductor case 13a with respect to the shield case 13. The air layer for impedance adjustment is formed in the portion facing the radial direction. As a result, the impedance can be matched more efficiently, and the rigidity of the bent portion 11f of the insulating pressing plate 11d is lowered by the space portion 11e. The bending operation of the insulating pressing plate 11d can be easily performed without causing damage or the like.

Further, according to the present embodiment, in addition to the matching effect of the impedance generated by the space portion 11e of the insulating pressing plate 11d, the impedance is also provided by the case-side groove portion 14 provided in the case cover portion 13b of the shield case 13. Matching, therefore, enables impedance matching to be performed more efficiently and easily.

In addition, when the space portion 11e is formed by the through holes in the present embodiment, the space portion 11e can be formed by the through holes which are easily manufactured. Therefore, the manufacturing efficiency can be improved correspondingly.

Next, the configuration of the second embodiment disclosed in Figs. 17 to 19 will be described. In the second embodiment, the "1" of the number of digits of the component symbol marked in the first embodiment is replaced by "2", and the plug connector of the second embodiment (coaxial type) In the electrical connector 20, the space portion 21e provided in the region on the base portion side of the insulating pressing plate 21d is formed by a bottomed concave groove extending in an elongated direction along the extending direction of the thin coaxial cable SC. The configuration of the other members is the same as that of the first embodiment.

In other words, the space portion 21e formed by the inner wall surface of the bottomed concave groove of the present embodiment is also recessed in the thickness direction (upward direction) in a portion of the surface of the insulating pressing plate 21d. Formed in such a manner that the insulating pressing plate 21d has been overlapped with the thin wire coaxial cable SC In the above arrangement, the concave groove constituting the space portion 21e is disposed in an "connection portion" which is an electrical connection region between the cable center conductor (signal line) SCa and the inner conductor contact 12 from the upper side surface. The space portion 21e formed by the concave groove is formed from the cable center conductor (signal line) SCa and the "wiring portion (electrical connection region)" of the inner conductor contact 12 toward the rear side of the connector, that is, the base of the insulating pressing plate 21d. The side portion extends and extends downward so as to extend along the bent portion 21f formed on the insulating pressing plate 21d.

In the second embodiment including the space portion 21e having the above-described bottomed concave groove, the same operations and effects as those of the first embodiment can be obtained.

In the above, the present invention has been described in detail with reference to the embodiments. However, the present invention is not limited to the embodiments described above, and various modifications may be made without departing from the spirit and scope of the invention.

For example, in the above embodiment, the present invention is applied to a vertical fitting type electrical connector, but the same can be applied to a horizontal fitting type electrical connector.

Further, the present invention is not limited to the single-core thin-wire coaxial cable connector of the above-described embodiment, and the coaxial cable connector or the plurality of coaxial cables and insulated cables are arranged in a multi-pole configuration. Wire type electrical connectors and the like are also applicable.

As described above, the present embodiment can be widely applied to various types of electrical connectors used in various electrical devices.

12‧‧‧Internal conductor contacts (signal contacts)

12a‧‧‧Upper side beam (tongue)

13‧‧‧Shielding shell

13a‧‧‧External conductor housing (earth contact)

13a1‧‧‧Shell insertion

13a2‧‧‧ cable protection arm

13b‧‧‧Shell cover

13b1‧‧‧Connected components

13b2‧‧‧ front cover

13b3‧‧‧1st fixed retaining plate

13b4‧‧‧2nd fixed retaining plate

13b5‧‧‧3rd fixed retaining plate

Claims (4)

A coaxial type electrical connector comprising: an insulating housing connecting a terminal portion of a cable-like signal transmission medium; and an outer conductor shell formed by a substantially hollow cylindrical member mounted to cover an outer surface of the insulating housing And an inner conductor contact member disposed in an inner region of the outer conductor shell in a radial direction; a wiring portion between the terminal portion of the cable-like signal transmission medium and the inner conductor contact member is disposed in the outer conductor shell In the inner region of the radial direction, the annular opening portion of the outer conductor shell is connected to the cover portion for opening and closing the annular opening portion; and the insulating housing is provided with An insulating pressing plate that is integrally opened and closed with the cover portion; when the cover portion is closed so as to cover the annular opening of the outer conductor case, the insulating pressing plate is deformed so as to form a bent portion, thereby Pressing the tongue of the inner conductor contact member against the cable-like signal transmission medium by the pressing force of the insulating pressing plate and forming the wiring portion; characterized in that: the insulation a portion of the surface of the platen, and a position facing the terminal portion between the terminal portion of the cable-like signal transmission medium and the inner conductor contact member, and a space formed by the inner wall of the groove recessed in the height difference The space portion is disposed in an inner region of the outer conductor shell in the radial direction, and an inner diameter dimension W1 in a width direction orthogonal to an extending direction of the cable-shaped signal transmission medium is smaller than the inner conductor contact portion The tongue portion has a size W2 outside the width direction. For example, the coaxial type electrical connector of claim 1 of the patent scope, wherein the space portion The manner in which the cable-like signal transmission medium extends is provided in a region from the wiring portion to the bent portion. The coaxial type electrical connector of claim 1, wherein the insulating pressing plate extends along an inner wall surface of the cover portion disposed to cover an annular opening portion of the outer conductor case; The inner wall surface of the lid portion forms a shell side groove portion that faces the space portion. The coaxial type electrical connector of claim 1, wherein the space portion is formed by a through hole.