JP2000223225A - Coaxial connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mount on a board without using a holding jig by forming a guide groove for fitting into a notch groove of a circuit board. SOLUTION: In a circuit board 280, a coaxial connector 230 is fit into a connector notch part 281 disposed on a position corresponding to the notch part of a frame on the back end side. The connector 230 is consisted of a brass shell 231 having a gold-plated surface and a beryllium copper central contact 233 coaxially embedded on an around hole communicating through the shell 231 through a tef;pm insulator 232. On both sides of the shell 231, a guide groove 234 for fitting into the connector notch part 281. According to this constitution, the connector 230 can be fixed to the circuit board 280 without using a jig when mounted on the circuit board 280 by soldering and workability is facilitated. Additionally, the guide groove 234 is disposed on both sides of the shell 231 so that fixing the connector 320 to the circuit board 280 becomes easy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial connector which fits into a cutout provided in a circuit board, and is used, for example, by being removably incorporated into an IC card slot of a notebook personal computer or a desktop personal computer. "PC
The present invention relates to a coaxial connector suitable for use in a PC card for wireless communication conforming to "Card Standard".

[0002]

2. Description of the Related Art PC cards are available from PCMCIA (Pe
rsonal Computer Memory Card International Ass
is a credit card sized IC card compliant with the "PC Card Standard" jointly standardized by the Japan Electronic Industry Development Association (JEIDA), and the IC card slot of most notebook PCs is compatible with PC cards. There is also a desktop type that supports PC cards. In conventional modem communication and LAN, etc., wiring is cumbersome. In recent years, a PC card has been removably incorporated into these terminal devices to allow modem communication and LAN (Local Are).
a Network) or the like by wireless communication has become a reality. This PC card requires a credit card-sized card body compliant with the “PC Card Standard” and an antenna for wireless communication. The width and thickness are almost the same as the card body and the length is 2. Description of the Related Art There is known an antenna in which an antenna is housed in a compact case of a little less than one-third of a card main body in a rectangular shape in a plan view, and is detachably mountable on the card main body. Also,
In wireless communication using a PC card, diversity is used as a technology for reducing the influence of multipath fading due to reflection and propagation of radio waves and achieving high quality reception.
It is also specified in EE802.11. For this reason, it is known that two antennas are built in the antenna unit and the coaxial connectors included in the card main unit and the antenna unit are mounted on the card main unit. In general, the coaxial connectors of the card body and the antenna are fitted into cutouts which are cut out so as to have substantially the same width as the coaxial connectors provided on the circuit board, and are electrically connected to the circuit board by soldering.

[0003]

By the way, the conventional coaxial connector is fitted into a cutout which is cut out substantially the same as the width of the coaxial connector provided on the circuit board, and is electrically connected to the circuit board by soldering. Therefore, a jig for holding the coaxial connector fitted in the circuit board during the soldering operation is required, and there is a problem that workability is poor. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a coaxial connector which does not require a holding jig when mounting the coaxial connector on a circuit board.

[0004]

(1) A coaxial connector according to the present invention is a coaxial connector that fits into a notch formed in a circuit board, and has a guide groove into which the notch fits. ing. (2) In the coaxial connector according to the present invention, in the paragraph (1), the coaxial connector has a shell and a center contact coaxially arranged in a round hole in the shell via an insulator, and the guide groove is formed in the shell. Is formed. (3) The coaxial connector according to item (1) of the present invention is used for a coaxial connector of a PC card including a card main body and an antenna section detachably attached to the card main body by a coaxial connector. (4) The coaxial connector according to item (1) of the present invention includes a card main body and a card that allows the card main body to receive diversity.
It is used for a coaxial connector of a PC card having an antenna section detachably mounted by a plurality of coaxial connectors.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of a wireless LAN using a coaxial connector according to an embodiment of the present invention;
The C card 100 will be described with reference to FIGS. First, an example of an infrastructure connection type network as a usage mode of a wireless LAN by the PC card 100 is shown in FIGS. In FIG. 8, reference numeral 1 denotes a wireless terminal in which a PC card 100 is mounted on a notebook personal computer 2, and a plurality of wireless terminals 1 are wirelessly connected to one access point 3 to establish a wireless LAN.
10, and a network configuration in which an existing wired LAN 20 including a host computer, a desktop personal computer, a printer, and the like is connected to the access point 3 by wire, so that the wireless LAN 10 and the wired LAN 20 can be interconnected. . Also, in FIG.
Reference numeral 4 denotes a HUB, which is a LAN concentrator, and a plurality of access points 3 are connected to the HUB 4 by wire, and a plurality of wireless terminals 1 are wirelessly connected to each access point 3 to provide a wireless LAN 10 for each access point 3. And the wireless L
The interconnection between the ANs 10 and the HU
The wired LAN 20 is connected to B4 by wire, and the wireless LAN 1 is connected.
0 and the wired LAN 20. Wireless LAN 1 shown in FIGS. 8 and 9
0 indicates a 2.4 GHz band currently used as a radio frequency band, and a wireless LAN standard (IEEE80) of the American Electronics and Electrical Engineers Association as a signal transmission method.
In a spread spectrum method based on 2.11), wireless communication is performed at a transmission rate of, for example, 1 Mbps or 2 Mbps, and diversity can be performed when the wireless terminal 1 receives.

As shown in FIG. 1, the PC card 100 comprises a card main body 200 and an antenna 300. The front end of the card main body 200 is provided at the back of the IC card slot 5 of the notebook personal computer 2. "PC Card Standa
rd "(not shown), and a card body 20
0 is a connector of the antenna unit 300 (not shown)
In addition, a connector (not shown) at the front and rear ends of the card body 200 is detachably connected to each other. When the PC card 100 is inserted into the IC card slot 5, the rear end of the card body 200 is slightly visible, most of the card body 200 is hidden inside the personal computer, and the antenna unit 300 is completely out of the personal computer. Has become.

Next, the external configuration of the card body 200 and the antenna 300 as viewed from the outside will be described with reference to FIG. The card body 200 has an external shape conforming to “PC Card Standard” TYPE II, and has a shield case 210 for accommodating a circuit board (not shown), and a notebook personal computer arranged at the tip side of the card body 200. 2 in 68
A 68-pin jack connector 220 connected to the pin plug connector and the circuit board of the card body 200; and a card body 200 disposed at the rear end of the card body 200.
A coaxial jack connector 230 connected to the circuit board and the antenna unit 300, and a translucent resin made of a translucent resin arranged on the right side of the rear end side of the card body 200 in the drawing for visually checking the transmission / reception operation state. And a display window 240. The shield case 210 is a die-cast frame 2
50, and an upper cover 260 and a lower cover 270 made of stainless steel to be fitted to the frame 250. Pin holes 251 for mounting the antenna unit 300 are provided at the left and right ends of the rear end of the frame 250. The antenna unit 300
Resin case 3 for storing antenna circuit board (not shown)
10 and the coaxial jack connector 2 of the card body 200
30 and a coaxial plug connector 320 connected to the antenna circuit board. The resin case 310 has a case body 330 having an open back surface, and a lid 340 having an opening in the case body 330. Guide pins 331 which are arranged on the left and right ends on the card body 200 side and can be inserted into the pin holes 251 are integrally formed on the case body 330. The case body 330 is the card body 20
The display window 24 extends from the side surface on the zero side to a predetermined position inside the surface.
An inclined notch 332 is provided at the right position in the figure corresponding to 0. Note that two connectors 230 and 320 are provided for diversity.

Next, the card body 200 is shown in FIGS.
This will be described in more detail with reference to FIG. Unless otherwise noted, description will be made with reference to FIG. The configuration of the card body 200 is as follows.
In addition to the shield case 210, the connector 220, the connector 230, and the display window 240 whose external configuration is shown in FIG. 2, a circuit board 280 housed in the shield case 210 is a component. The frame 250 has a frame structure in which the front end side is open for the arrangement of the connector 220, and the bar 252 supported by the circuit board 280 is bridged to both side frames at a predetermined position inside from the front end side. At the rear end side of the frame 250, connectors 230 are provided at two positions at the center in the left-right direction at approximately one third of the inner frame width from both sides.
Is provided with a notch 253 into which the connector 230 is fitted.
A cutout portion 254 is provided at a position on the right side of the space between 230 and the display window 240 is fitted. A through-hole 255 for fitting the upper and lower cover cases 260 and 270 to the four corners of the frame 250, and an outer peripheral groove 256 for fitting the upper and lower cover cases 260 and 270 along the center in the outer vertical direction excluding the four corners of the frame 250. Are provided.

On the rear end side of the upper cover 260, the notches 261 and 261 are located at positions corresponding to the notches 253 and 254.
62 are provided. At four corners of the upper cover 260, through holes 255 are provided at positions corresponding to the four corner holes 255 of the frame 250.
And a U-shaped bent portion 264 on the outer periphery of the upper cover 260 at a position corresponding to the outer peripheral groove 256 of the frame 250 to fit the outer peripheral groove 256. . Similarly, the lower cover 270 corresponds to the notch 271 at a position corresponding to the notch 253, the fitting claw 273 at a position corresponding to the through holes 255 at the four corners of the frame 250, and the outer peripheral groove 256 of the frame 250. A U-shaped bent portion 274 is provided at the position. These upper and lower covers 260 and 270 are formed by punching a stainless steel plate and bending and forming predetermined positions to be the fitting claws 263 and 273 and the U-shaped bent portions 264 and 274. The shield case 210 is assembled, and the upper and lower covers 260 and 270 are
The state in which the U-shaped bent portions 264 and 274 are fitted can be understood well with reference to FIG.

The connector 220 is mounted on the front end of the circuit board 280, and the connector 230 is fitted into a notch 281 provided at a position corresponding to the notch 253 of the frame 250 on the rear end. The figure shows the state before being fitted). As shown in FIG. 5, the connector 230 includes a brass shell 231 having a gold plated surface, and a beryllium copper center contact 233 coaxially embedded in a round hole passing through the shell 231 via a Teflon insulator 232. Guide grooves 234 for fitting into the notches 281 are provided on both side surfaces of the shell 231. In addition, both sides of the circuit board 280 are in contact with the ground pattern while holding both sides of the circuit board 280 so that the ground pattern (not shown) of the circuit board is in contact with the shield case. The shield touching element 282 is arranged at a predetermined length along the side. The legs 283 at both ends of the shield contact 282 are inserted into cutouts 284 and 285 formed at predetermined positions between the rear end corner and the front and rear ends of the circuit board 280, and fix the holding position of the shield contact 282 along both ends. ing. As shown in FIG. 4, the shield contact 282 has a U-shape formed of three surfaces and contacts the ground pattern on at least one side of the protrusion 286 provided on the inside of the opposing surfaces, and the remaining non-opposed surface of the frame 250 It comes into contact with the inner surface. On the rear end side of the circuit board 280, two LEDs 287 for transmission and reception are mounted at positions corresponding to the display window 240. The display window 240 may be arranged at the center on the rear end side, that is, between the connectors 230.
In the vicinity of 0, a switching switch IC (not shown) for performing diversity is mounted, and if LEDs are arranged between the connectors 230, wiring becomes complicated, so this embodiment is more preferable. Although not shown, a wireless communication transmitting / receiving circuit, an interface circuit, and the like are formed on the circuit board 280 in addition to the above configuration, and are connected between the connector 220 and the connector 230. Although not shown, a holding contact piece is inserted into and held in the rear end side of the frame 250 and is in contact with at least one of the upper and lower covers 260 and 270 while inserting and holding the circuit board 280.

Next, the antenna section 300 will be described. The configuration of the antenna unit 300 is different from that of the resin case 310 and the connector 320 shown in FIG.
The antenna circuit board 350 shown in FIG. The notch 253 of the frame 250 is provided on the antenna circuit board 350 on the card body 200 side.
Notches 351 and 35 provided at positions corresponding to 253
1 are fitted with connectors 320, 320 (the figure shows a state before being fitted). Connector 32
0 has a brass shell 321 gold-plated on its surface as shown in FIG. 7 and a beryllium copper center contact 323 coaxially embedded in a round hole passing through the shell 321 via a Teflon insulator 322, Guide grooves 324 for fitting into the notches 351 on both sides of the shell 321
Is provided. An unillustrated ground pattern and two antenna patterns are formed on the antenna circuit board 350. The ground pattern is soldered to the shell 321 of the connector 320, and the antenna pattern is soldered to the center contact 323 of the connector 320.

As described above, in this embodiment,
(1) A display window 240 for visually checking the transmission / reception operation state is arranged at an end of the card body 200 on the side where the antenna is mounted, and corresponds to a display window 240 of the end of the card body 200 where the antenna 300 is mounted. The inclined notch 332 that widens the viewing angle of the display window 240 is provided at the position where the PC card 1
00, the antenna unit 300 is attached to the card body 200.
When the card body 200 is inserted into the IC card slot 5 of the personal computer 2, most of the card main body 200 is hidden in the personal computer 2, but the display window 240 at the antenna mounting side end of the card main body 200 is connected to the antenna 300. It is possible to see through the provided inclined notch 332, and it is not necessary to provide a display window in the antenna unit, and it is not necessary to provide a necessary light guide plate inside the antenna unit when the display window is provided in the antenna unit. It is possible to display the operation state of the reception state at low cost. (2) The PC card 100 has two coaxial jack connectors 2 included in the card body 200 between the card body 200 and the antenna 300 in order to receive diversity.
30 and 230 and two coaxial plug connectors 320 and 320 included in the antenna section, and can be connected to each other.
0 is arranged outside the coaxial jack connectors 230 and 230 in the width direction of the card body 200, so that the circuit board 2
The arrangement of the display window between the coaxial jack connectors 230 and 230 on which the diversity switching IC is arranged is simpler than the arrangement of the display window. (3) The PC card 100 has a shield case 210 including a frame 250 and upper and lower covers 260 and 270 fitted to the frame 250, and is formed on the outer periphery of the upper and lower covers 260 and 270 in an outer peripheral groove 256 formed in the frame 250. The upper ends of the U-shaped bent portions 264 and 274 are fitted into the U-shaped bent portions 264 and 274. Therefore, when the upper and lower covers are attached to the frame, there is no need for heat fitting as in the case of a resin frame. The front end can be fitted into the outer peripheral groove 256 only by hand force, and the frame 250 and the upper and lower covers 260,
270 can be fitted. (4) The frame 250 is made of die-casting, and can be easily formed with a notch or an uneven portion having a complicated shape for physically holding the circuit board, the upper and lower covers, the connector, etc. while being metal. Electromagnetic shielding can be secured. Also, when plating the frame 250, the operation is simpler than plating the metal for securing electromagnetic shielding on the resin frame. (5) The fitting claws 263 formed at the four corners of the upper and lower covers are inserted into the through holes 255 formed at the four corners of the frame 250 in the thickness direction, thereby restricting the horizontal displacement between the frame 250 and the upper and lower covers 260 and 270. Therefore, the mechanical strength of the shield case 210 particularly in the horizontal direction can be further improved in combination with the fitting of the U-shaped bent portions 264 and 274 into the outer peripheral groove 256 described in (3). (6) The circuit board 280 is accommodated in the shield case 210, and both sides of the circuit board 280 are gripped from both end faces in the width direction to come into contact with the ground pattern formed on the circuit board 280 and to come into contact with the inner face of the frame 250. Since the shield contact 282 is provided, the ground pattern of the circuit board 280 and the shield case 210 are electrically connected without soldering, and can be electromagnetically shielded by easy assembly. (7) Specifically, the shield contact 282 has a substantially rectangular shape in a plan view and a U-shape in a side view. By simply inserting the shield contact 282 into the circuit board 280, both sides of the circuit board 280 can be gripped and soldered. It is easy to mount on a circuit board without any. (8) The contact force between the shield pattern 282 and the ground pattern can be increased by making the plurality of protrusions 286 contact the shield pattern 282. (9) The shield armature 282 has legs 283 at both ends in the longitudinal direction.
Are inserted into the notches 284 and 285 formed at predetermined positions between the rear end corner and the front and rear ends of the circuit board 280, so that the contact position of the shield touching element 282 with the ground pattern can be firmly fixed. (10) The card body 200 and the antenna 300 are fitted so that the cutouts 281 and 351 formed on the circuit boards 280 and 350 are inserted into the guide grooves 234 and 324 formed on the side end surfaces of the coaxial connectors 230 and 320, respectively. Therefore, the coaxial connector 23 is attached to the circuit boards 280 and 350.
When 0, 320 is attached by soldering, it can be fixed without using a jig and can be easily operated. (11) Coaxial connectors 230 and 320 are shells 231 and
321 and insulators 23 in round holes in shells 231 and 321.
Center contact 23 coaxially arranged via 2,322
3 and 323, and the guide grooves 234 and 324 are provided on both side ends of the shells 231 and 321 so that the circuit board 2
It is easy to fix to 80 and 350. The coaxial connector described in the above embodiment is not limited to use with a PC card, but can be used by fitting it into a cutout portion of various circuit boards.

[0013]

According to the coaxial connector according to the present invention,
(1) The notch formed on the circuit board is fitted into the guide groove formed on the side end face of the coaxial connector, so that the coaxial connector can be fixed to the circuit board without using a jig when soldering the same. Specifically, (2) the guide grooves can be provided on both side ends of the shell to facilitate fixing to the circuit board. (3) If this connector is used for a coaxial connector of a PC card having a card main body and an antenna detachably attached to the card main body by a coaxial connector, the PC card can be manufactured at low cost. can do. (4) This connector is used as a coaxial connector of a PC card having a card body and an antenna detachably attached to the card body by two coaxial connectors so as to be able to receive diversity. However, a PC card can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a configuration of a PC card using a coaxial connector according to an embodiment of the present invention and insertion into a notebook personal computer.

FIG. 2 is an exemplary perspective view showing the appearance of the PC card shown in FIG. 1;

FIG. 3 is an exploded perspective view of a card main body of the PC card shown in FIG. 1;

FIG. 4 is a sectional view of the card body shown in FIG.

FIG. 5 is a perspective view of a circuit board and a connector constituting the card body shown in FIG. 3;

FIG. 6 is a plan view of an antenna board and a connector constituting an antenna unit of the PC card shown in FIG. 1;

7 is a perspective view of the antenna board and the connector shown in FIG.

FIG. 8 is a network diagram showing a first usage mode of the wireless LAN using the PC card shown in FIG. 1;

FIG. 9 is a network diagram showing a second use mode of the wireless LAN using the PC card shown in FIG. 1;

[Explanation of symbols]

 100 PC Card 200 Card Body 220 Pin Jack Connector 230 Coaxial Jack Connector 231 Shell 232 Insulator (Teflon) 233 Center Contact 280 Circuit Board 281 Connector Notch 320 Coaxial Plug Connector 321 Shell 322 Insulator (Teflon) 323 Center Contact 350 Antenna circuit board 351 Notch for connector

Continuation of the front page F term (reference) 5B035 AA04 AA11 BA02 BA03 BB09 BC00 CA01 CA06 CA08 CA25 5E077 BB22 BB31 DD01 JJ05 JJ30 5K033 AA04 BA03 DB01 DB04

Claims (4)

[Claims] 1. A coaxial connector which fits into a notch formed in a circuit board, wherein the coaxial connector has a guide groove into which the notch fits. 2. The coaxial connector according to claim 1, wherein said coaxial connector has a shell and a center contact coaxially disposed in a round hole in the shell via an insulator, and said guide groove is formed in said shell. connector. 3. A coaxial connector for a PC card having a card body and an antenna detachably attached to the card body by a coaxial connector.
The coaxial connector as described. 4. A coaxial connector for a PC card comprising a card body and an antenna detachably mounted on said card body by two coaxial connectors so as to receive diversity. The coaxial connector as described.