JPH0426082A - Connection terminal - Google Patents

Abstract

PURPOSE:To effectively connect the signal wires inside and outside a shielding plate by connecting the signal wires inside and outside the shielding plate respectively at both ends of a terminal wire which passes through a connection terminal after the connection terminal is installed to the shielding plate. CONSTITUTION:A terminal wire holding member 37 made up of a dielectric having a through hole 41 into which a terminal wire 40 made up of a conductor is inserted, and on the surface of one side of the terminal wire holding member 37, a conductive layer 36 laminated excluding the peripheral portion of the through hole 41 and an opening 35 formed corresponding to the conductive layer 31 are provided. Then, an installation member 25 junctioned to the terminal wire holding member 37 through the conductive layer 36 is installed at a shielding plate 14 to connect the signal wires 18 and 12 outside and inside the shielding plate 14 at both ends of the terminal wire. It is thereby possible to improve the efficiency of the connection work of the signal wires 18 and 20 outside and inside the shielding plate 14.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a connection terminal, and is suitable for application to, for example, a connection terminal of a transmitting/receiving device in a digital mobile radio.

B. Summary of the Invention The present invention provides a connection terminal in which, after the connection terminal is attached to a shielding plate, signal lines inside and outside the shielding plate are connected at both ends of a terminal wire passing through the connecting terminal. Signal lines can be connected efficiently.

C. Conventional technology Conventionally, for example, in the transmission and reception of radio waves between a radio set installed in a car (hereinafter referred to as a car phone) and a relay station, so-called AM (AM) modulation is used to amplitude-modulate a carrier wave based on an audio signal.
However, with the spread of car phones, it is necessary to communicate between car phones with many enemies over a wide range, so the voice signal is compressed by digital signal processing, and the FM (
Transmission and reception using a frequency modulation method is being considered.

In a car phone using such an FM modulation method, as shown in FIG. By shielding part 2 with shield case 3 and inserting feedthrough capacitor 5 into through hole 4 provided in shield case 3 and soldering it, high frequency noise components generated from digital signal processing part 2 are removed from feedthrough capacitor 5. The signal lines LINEI to LINEN are
This is to prevent it from entering the analog signal processing circuit via the

Problems to be Solved by the Invention In a car phone using such an FM modulation method, a large number (for example, 20 to 30) of signal lines LI are connected between the digital signal processing circuit 2 and the analog signal processing circuit.
NE! -L I NEN is required to be connected, but soldering the feedthrough capacitor 5 to the through hole 4 of the shield case 3 for each signal line makes the installation work complicated and requires a lot of effort. There is a problem that work efficiency is not good.

The present invention has been made in consideration of the above points, and allows connection between each signal processing circuit with a simple installation method.
This paper attempts to propose a connection terminal that can shield high-frequency noise components.

8 Means for Solving Problems A terminal wire holding member 37 made of a dielectric material having a through hole 41 into which a terminal wire 40 made of a conducting wire is inserted, and a terminal wire holding member 3
7 has a conductive layer 36 laminated except for the peripheral edge of the four through holes, and an opening 35 formed in accordance with the conductive layer 36, and a terminal wire is held through the conductive layer 36. The mounting member 25 is attached to the shielding plate 14, and the signal lines 18 and 2 are connected to the inside and outside of the shielding plate 14.
0 at both ends of the terminal wire 40.

The mounting member 25 is connected to the terminal wire holding member 37 holding the F action terminal wire 40 via the conductive layer 36 laminated thereon, and the shielding plate 1
By connecting the terminal wire 40 to the signal wires 18 and 20 after the terminal wire 40 is attached to the shield plate 14, the efficiency of connecting the signal wires 18 and 20 inside and outside the shielding plate 14 can be further improved.

G example An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, reference numeral 10 indicates a transmitting/receiving device in a car phone as a whole, and a digital signal processing section 11 and an analog signal processing section 12 are connected to a shield case main body 1 made of a conductor.
3 and a shield plate 14 to prevent high frequency noise components generated from the digital signal processing section 11 from affecting the analog signal processing section 12.

Here, the processed signal sent from the digital signal processing board 15 is sent to the digital signal processing section of the connection terminal 19 which is electrically and mechanically connected to a predetermined position of the shield plate 14 via the connector 16, plug 17 and lead wire 1B. After input from the 11 side, the analog signal processing unit 1 of the connection terminal 19
The signal is supplied from the second side to the analog signal processing board 23 of the analog signal processing section 12 via a lead wire 20, a plug 21, and a connector 22.

Further, the signals processed by the digital signal processing board 15 or the analog signal processing board 23 can be delivered to the outside via a connector 24 provided on the shield case body 13.

Digital signal processing section 11 and analog signal processing section 12
As shown in FIG.
It is sandwiched between an analog printed wiring board 28 and a digital printed wiring board 29 from above and below via 26B, 27A, and 27B.

Here, the sub-shield plate 25, the analog side printed wiring board 28, and the digital side printed wiring board 29 are connected to the third
As shown in the figure, the through hole 29A of the digital side printed wiring board 28 is arranged on the same straight line as the connection bin 30A.
, spacer 27A.

The digital connector is screwed with a nut 31A through the through hole 25A of the sub-shield plate 25, the spacer 26A, and the through hole 28A of the analog side printed wiring board 28, and the connecting pin 30B is similarly arranged on the same straight line. They are fixed together by screwing them with nuts 31B through the through holes 29B of the side printed wiring board 290, the spacers 27B, the through holes 25B1 of the sub-shield plate 25, the spacers 26B, and the through holes 28B of the analog side printed wiring board 28. It is done like this.

Further, the sub-shield plate 25 is connected to the shield plate 14 and the through hole 25.
Screws 32A, 3 through C114C and 25D, 14D
2B and nuts 33A and 33B.

Here, the shield plate 14 is provided with a rectangular opening 34 having a size that allows the digital side printed wiring board 29 to be inserted freely, and when the sub-shield plate 25 is fixed to the shield plate 14, the digital side printed wiring board 29 is inserted. The printed wiring board 29 is inserted through the opening 34, and the sub-shield plate 25 is fixed with screws 32A, 32B and nuts 33A, 33B.

Further, as shown in FIG. 4, a rectangular opening 35 is formed in the center of the sub-shield plate 25, and a conductive conductor made of silver paste is formed to cover this opening 35 from the analog side printed wiring board 28 side. A dielectric plate 37 made of a dielectric material on which members 36 are laminated is fixed with solder 38 .

Here, the conductive member 36 has a short resistance 3 of 0 [Ω].
The dielectric plate 37 is coated over the entire surface except for the peripheral edge of a through hole 41 provided in the dielectric plate 37 so that the conductive wire 40 of No. 9 passes through, and is electrically and mechanically fixed at the joint with the sub-shield plate 25. There is.

Further, the dielectric plate 37 is provided with a through hole 41 corresponding to each conducting wire 40 of the short resistor 38, and the conducting wire 40 passing through the through hole 41 is connected to a land 42 made of silver paste formed on the dielectric plate 37. and are fixed by solder 43. As a result, the conductive wire 40 and the conductive member 36 form a capacitor via the dielectric plate 37, and the high frequency noise component superimposed on the signal sent from the digital side printed wiring board 29 is transferred to the dielectric plate 37, the sub-shield plate 25, By flowing through the shield plate 14 and the shield case body 13, it is possible to prevent high frequency noise components from entering the analog signal processing section 12.

Further, the conductive wire 40 of the short resistor 39 is connected to the through hole 44 formed in the analog side printed wiring board 28 and the wiring pattern 4.
5 and are electrically connected with solder 46 through holes 47 and wiring patterns 48 formed in the digital side printed wiring board 29 with solder 49 .

The wiring patterns 45 and 49 are connected to the analog side printed wiring board 28 and the digital side printed wiring board 29, respectively.
It is connected to connectors 50 and 51 arranged in
The signal supplied to the connector 50 is sent to the analog signal processing board 23 via the connector 50, the detachable plug 52, and the lead wire 20, and the signal supplied to the connector 51 is sent to the analog signal processing board 23 via the connector 50, the detachable plug 52, and the lead wire 20. and is sent to the digital signal processing board 15 via the lead wire 18.

In the above configuration, the connection terminal 19 consisting of the three layers of the sub-shield plate 25, the analog-side printed wiring board 28, and the digital-side printed wiring board 29 is fitted into the opening 34 provided in the shield plate 14 from the analog signal processing unit 12 side. The sub-shield plate 25 can be attached to the shield plate 14 by simply screwing it to the shield plate 14 using screws 32A, 32B and nuts 33A, 33B.

Here, the conductive wire 40 and the conductive member 36 made of silver paste constitute a capacitor via the dielectric 37, so that the processing is supplied from the digital signal processing board 15 to the connection terminal 19 via the connector 16 and the plug 17. High frequency noise components included in the signal are transmitted from the conductor 40 to the dielectric plate 37,
It flows through the conductive member 36 and the sub-shield plate 25 and can be prevented from affecting the analog signal processing section 12.

According to the above configuration, the connection end f19 having the connectors 50 and 51 to which the processed signals supplied from the analog signal processing board 23 and the digital signal processing board 15 can be connected via the plugs 52 and 53 is connected to the shield plate. Analog signal processing unit 12 can be easily connected to
The signal lines in the digital signal processing section 11 can be connected to each other, and work efficiency can be further improved.

In the above-mentioned embodiment, a case has been described in which the connection terminal 19 is attached to the shield plate 14 from the analog signal processing section 12 side, but in the present invention, instead of this, the connection terminal 19 is attached to the shield plate 14 from the digital signal processing section 11 side. You can also do it.

Furthermore, in the above-described embodiment, a case has been described in which the sub-shield plate 25 is attached to the shield plate 14 so that the dielectric plate 37 faces the analog-side printed wiring board 28. However, in the present invention, instead of this, the dielectric plate 37 It may be mounted so that it faces the digital side printed wiring board 29.

Further, in the above-described embodiment, a case was described in which two rows of through holes 41, 44 and 47 were arranged adjacently in the dielectric plate 37' and the analog side and digital side printed wiring boards 28 and 29, respectively, but the present invention are not limited to this, and may be arranged in any number of different ways, for example.

Furthermore, in the above-described embodiment, a case was described in which silver base metal was used as the conductive member 3G and the land 42, but the present invention is not limited to this, and the conductive member 3G and the land 42 may be formed using other conductive members. .

Further, in the above-described embodiment, the case where the sub-shield plate 25 is provided with a rectangular opening C135 has been described, but the present invention is not limited to this, and can be applied to various shapes.

Furthermore, in the above-described embodiment, a case was described in which the analog side printed wiring board 28 and the digital side printed wiring board 29 were arranged with the sub-shield plate 25 in between as the connection terminals 19. However, the lead wire 20 of the analog signal processing section 12 and the lead wire of the digital signal processing section 11 are connected at both ends of the conductive wire 40 passing through the sub-shield plate 25 formed by adhering a dielectric plate 37 coated with a conductive member 36. Even if 18 are connected, the same effect as described above can be obtained.

Further, in the above-described embodiment, a case was described in which a processed signal is transmitted and received between the digital signal processing section 11 and the analog signal processing section 12, but the present invention is not limited to this, and the present invention is not limited to this, and the processing signal is exchanged between the digital signal processing section 11 and the analog signal processing section 12. It may be used when doing.

Further, in the above-described embodiment, a case was described in which a processed signal was transferred between two signal processing circuits, but the present invention is not limited to this, but can also be applied to a case in which processed signals are transferred between a plurality of signal processing circuits. It is possible.

Further, in the above-described embodiment, the case where the connection terminal 19 is used in the transmitting/receiving device 10 used in a car telephone has been described, but the present invention is not limited to this, and is applicable to a wide range of cases in which signal processing circuits are connected (2). ,obtain.

H Effects of the Invention As described above, according to the present invention, the connection terminals are attached to predetermined positions on the shielding plate, and the signal lines are connected at both ends of the terminal wires, thereby further increasing the number of signal lines inside and outside the shielding plate. It is possible to connect efficiently and thus shield high frequency noise components.

[Brief explanation of the drawing]

FIG. 1 is a broken cross-sectional view showing one embodiment of the connecting terminal according to the present invention, FIG. 2 is an exploded perspective view showing the detailed configuration of the connecting terminal according to the present invention, and FIG. 3 is a longitudinal cross-section of the connecting terminal shown in FIG. 2. side view,
FIG. 4 is a perspective view for explaining the sub-shield plate, and FIG. 5 is a perspective view for explaining one conventional connection terminal. 19...Connection terminal, 25...Zubshield board, 28...Analog side printed wiring board, 29...Digital side printed wiring board, 34.35... Opening, 36... Conductive member, 37... Conductive plate, 39... Short resistor, 40... Conductive wire, 42...Land, 45.48...Wiring butter...N. To send! ! Creed equipment 12 analog lower signal 5 processing unit t flip, Ida bow O Ihi 2 salary O Ashi Uζ Leather title nut 1, Display of incident 1990 patent application No. 128637 2, Name of invention connection terminal 3, Make amendment Relationship with the case Patent applicant address No. 6-7-35 Tokyo Parts Illustrated Product Name (21
B) Sony Corporation Representative Norio Ohga 4, Agent 150 (Telephone 03-4.7O-65)
91) Place of residence No. 3-22-10 Jingumae, Shibuya-ku, Tokyo Contents of amendment in column 6 of “Detailed description of the invention” of the specification (1) Specification, page 2, line 12, “amplitude modulation” was changed to “ "Frequency modulation" is corrected. (2) Same, page 2, line 13, r A M (ampl
itude modulation) J,' F
M (Frequency l'1odulatjon
) Correct it as J. (3) Same, page 2, line 12'
cy modulation) J, [F S K
(Frequency 5hift Keying) and P S K (Phase 5hift Keying)
) is corrected to ``digital''. (4) Same, page 3, lines 1 and 14, "I'FM modulation method" is corrected to "digital modulation method."

Claims (1)

[Claims] a terminal wire holding member made of a dielectric material having a through hole into which a terminal wire made of a conductive wire is inserted; and a conductive layer laminated on one surface of the terminal wire holding member except for a peripheral portion of the through hole. , a mounting member having an opening formed in accordance with the conductive layer and joined to the terminal wire holding member through the conductive layer, the mounting member being attached to the shielding plate, and the mounting member being attached to the shielding plate, A connection terminal characterized in that a signal line is connected at both ends of the terminal line.