JPH02215065A - Connector device - Google Patents

Abstract

PURPOSE:To facilitate the fitting and removal and miniaturize a connector device by providing an opening/closing mechanism moving at least one of the first substrate and the second substrate near to or apart from the other. CONSTITUTION:Coaxial button type terminals 37 and 43 are arranged on substrates 36 and 42 in the two-dimensional alignment so that end faces of the coaxial button type terminals 37 and 43 are brought into contact with each other when the substrates 36 and 42 are moved in the direction B. The substrates 36 and 42 are moved and faced to each other when a housing 41 is inserted into a housing 31, a pressing plate 34 is excited when a cam 35 is driven, and end faces of the coaxial button type terminals 37 and 43 are brought into contact with each other by the specified pressing force. A connector device is miniaturized, and its fitting and removal are facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Field of Industrial Application) The present invention relates to a connector device suitable as a multi-pole coaxial type.

(Prior art) This type of connector device connects signal currents and power supply currents between two devices, between boards or between modules made up of multiple boards, in a detachable manner. There are various types.

Here, for example, a cable connector device for connecting to a main body tophrobe of an electronic scanning ultrasonic diagnostic apparatus will be described. That is, a probe of an ultrasonic diagnostic apparatus is configured with a large number of ultrasonic transducers, and each transducer is supplied with a high voltage pulse during transmission, and generates a weak echo reception signal during reception. The high voltage pulse is supplied from a transmitter built into the main body, and
The received signal is sent to a receiver built into the main body.

These high voltage pulses and received signals are exchanged between the probe and the main body via a multicore cable.

In order to connect a wide variety of probes to the main body, for example, a male connector is attached to the cable, and a female connector is attached to the main body in correspondence with the male connector, so that the probe (with cable) and the main body can be connected. It is configured so that it can be freely attached and detached. In this case, the connector device used is, for example, the one shown in FIG. 6 in consideration of the purpose of supplying high voltage pulses and robustness. What is shown in FIG. 6(a) is a male connector 11, in which rod-shaped male terminals are arranged in stages with a number of poles. Further, the cable 12 is connected to a probe (not shown).

What is shown in FIG. 6(b) is a connector 13 that is attached to a main body frame (not shown), and rod-shaped female terminals are arranged in stages in the number of poles inside the connector 13. Also, the cable 14
is connected to a transceiver inside the main body (not shown). In a connector device consisting of such a male connector 11 and a female connector 13, a rod-shaped male terminal with a divided number of poles is connected to the female connector 13.
is inserted into the rod-shaped female terminal and maintained in contact with the rod-shaped female terminal with a specified contact pressure.

On the other hand, considering the signals and electric wires exchanged between the probe and the main body, the mutual inductance and self-inductance between the signal wires (11 wires) are large, and crosstalk between the signal wires is likely to occur. It is also easily influenced. In order to suppress such effects as much as possible, each signal line that makes up the cable should be coaxial (or shielded).
It is customary to use lines. However, various types of connector devices, which are cable terminals, are not coaxial. Originally, it would be beneficial if the connector device were coaxial to correspond to the cable, since the above-mentioned problems could be suppressed, but this has not been realized for the following reasons.

Figures 7(a) and 7(b) show a connector device in which a 1-pole coaxial terminal and a 10-pole single terminal are arranged side by side.
1 is a male connector 15, in which one coaxial male terminal 16 and ten single male terminals 17 are arranged. Moreover, the one shown in FIG. 7(b) is a female connector 18.
One coaxial female terminal 19 and ten single female terminals 20 are arranged inside. Here, single male terminal 1
7 and single female terminal 20 are based on the same principle as shown in FIG. 6, and coaxial male terminal 16 and coaxial female terminal 1
9 is based on the same principle as the so-called bottle plug 21 shown in FIG.

The single male terminal 17 and the single female terminal 20 are formed by inserting the single male terminal 17 into the single female terminal 20 in its longitudinal direction,
Electrical connection is achieved by contacting the longitudinal sides of the coaxial male terminal 16 and the coaxial female terminal 19. inserted and by contact on its longitudinal sides,
They are the same in that they are electrically connected.

However, in the case of a coaxial terminal, as explained using the example of Fig. 8, each terminal has a configuration in which the signal conductor 22, 23 and the grounding conductor 24, 25 are arranged concentrically, and the male side covers the female side. I'm next door.

(Problem to be Solved by the Invention) The above-mentioned coaxial terminal is equivalent to two single terminals integrated, and the grounding conductor 24, 25 is inserted into either the male side or the female side and covered. Since the terminals are intended to overlap to achieve a specified contact pressure and therefore electrical conductivity, their diameter is naturally larger than that of a single terminal. Since it is equivalent to inserting and removing the terminal, due to the synergistic force of the signal conductor 22.23 and the grounding conductor 24.25, the insertion force and removal force are also much larger than that of a single terminal. It has become a big thing.

The above explanation is a comparison of one coaxial terminal and a single terminal, but the number of pins required by a connector device used in an ultrasonic diagnostic device ranges from 100 to 200 pins. Such a multi-pole coaxial connector device is not practical because it has a very large shape and the insertion and removal forces are very large, making it difficult to attach and detach.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a connector device that can be miniaturized, is easy to attach and detach, and is suitable for a multi-polar coaxial type.

[Structure of the Invention] (Means for Solving the Three Problems) The present invention has a structure in which the following measures are taken to solve the above-mentioned problems and achieve the object.

That is, the present invention according to claim 1 includes a first substrate on which a button-shaped terminal is arranged, and an end surface of the button-shaped terminal on which a button-shaped terminal is arranged, and an end surface of the button-shaped terminal is formed in the button-shaped shape of the first substrate. a board of ff12 disposed at a predetermined distance from the first board so as to face the end surface of the terminal;
and an opening/closing mechanism that brings at least one of the front and second first boards and the second board closer to and away from the other so as to make the end faces of the button-type terminals of the second board come into contact with and separate from the end faces of the button-type terminals of the second board. Features.

Moreover, the invention according to claim 2 is characterized in that the button-type terminal according to the invention according to claim 1 is constituted by a signal conductor and a grounding conductor.

(Function) According to the invention of claim 1, by operating the opening/closing mechanism, the end surfaces of the two button-type terminals come into contact with each other, and electrical contact between the two is established. In this case, since the electrical contact is based on contact, attachment and detachment are easy, and the electrical conductivity can be adjusted by the contact force of the opening/closing mechanism. Further, according to claim 2, the structure is not inserted into either the male side or the female side and covered with each other as in the conventional case, but is configured such that the end surfaces of the two sides simply come into contact with each other, so that the size is smaller than that of the conventional device. A coaxial button type terminal can be configured, and a multipolar coaxial connector device can be realized.

(Embodiment) An embodiment of the connector device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a partially sectional perspective view of a connector device according to this embodiment. FIG. 1(a) shows a male connector 30,
Further, FIG. 1(b) shows a female connector 40. As shown in FIG.

The male connector 30 shown in FIG. 1(a) includes a box-shaped housing 31 having an opening, a cable mounting base 32 fixedly disposed on the opposite side of the housing 31, and a cable mounting base 32. A cable connector 33 is attached to the cable connector 33 to which each electric wire 51 of a multi-core cable 50 introduced from a boolob (not shown) is connected, and a cable is attached to a stand 32.
A pressure plate 34 made of an elastic material is slidably disposed closer to the opening, and a cam 35 for cable attachment is disposed between the stand 32 and the pressure plate 34 and moves the pressure plate 34 in the direction A in the figure. , one edge portion of the housing 31 is disposed closer to the opening than the pressure plate 34;

The edge portion is pressurized by the pressure plate 34, and the edge portion of the cable is placed on the stand 32, and the edge portion is connected to each electric wire 51 of the multicore cable 50 via the cable connector 33. It is composed of a substrate 36.

゛The female connector 40 shown in FIG.
The housing 41 is inserted into the opening of the housing 31 shown in FIG.

Substrates 36 and 42 will now be described in detail with reference to FIGS. 2 and 3. FIG. 2(a) shows the male connector 30
Substrate 36. The connector 33 and the cable 50 are shown, and FIG. 2(b) shows the board 42 in the female connector 40.

However, in FIG. 2(a), the connector 33 has its cable attached to the plate 32, and the board 36 has its cable attached to the plate 32, but for ease of explanation, they are not shown here. In the figure, the plate 32 for cable attachment is omitted.

Coaxial button type terminals 37.43 are arranged in a two-dimensional array on the substrate 36.42, and the coaxial button type terminals 37.43 are arranged in a two-dimensional array.
The end faces of 43 come into contact with each other as the substrates 36 and 42 move in the direction of B in the figure. Here, the movement of the board 36.42 is achieved by inserting the housing 41 into the housing 31 so that the board 36.42 faces each other, and further pressing the pressure plate 34 by driving the cam 35 shown in FIG. As a result, each end surface of the coaxial button type terminals 37 and 43 comes into contact with a specified pressing force.

A ground line conductor 38 is provided on the surface of the substrate 36 facing the substrate 42, and a signal line conductor (not shown) is provided on the opposite surface.

The ground line conductor 38 and the signal line conductor are connected to the substrate 3.
6 and are arranged almost opposite each other. Similarly,
A ground line conductor (not shown) is provided on the surface of the substrate 42 facing the substrate 36, and a signal line conductor 44 is provided on the opposite surface.

The ground line conductor and signal line conductor 44 are connected to the substrate 4.
2 are arranged almost opposite each other.

FIG. 3 is a cross-sectional view showing surface mounting of the substrate 36, for example. As shown in FIG. 3, the coaxial button type terminal 37 includes a signal conductor 37a, an insulating layer 37b arranged around the signal conductor 37a, and a grounding conductor arranged around the insulating layer 37b. 37c, which are arranged concentrically, and their end faces are formed into flat surfaces.

Next, conditions for arranging the signal line conductor and the ground line conductor will be explained with reference to FIG. 4. That is, in order to have the effect of a coaxial line on signals passing through the signal line conductor, it is necessary to make the distance between the signal line conductor and the ground line conductor as close as possible. For example, taking a connector device used in an ultrasonic diagnostic device as an example, the crosstalk level between signal line conductors must be kept below -60 dB, and if it is higher than this, the measurement accuracy during Doppler blood flow measurement is decreases. In the case of a 100-pole connector device applied to a probe with 100 transducers, the distance between the signal line conductor 5IS2 and the signal line conductor 5IS2 is set to d, as shown in FIG.
When the distance between the signal line conductor St and the ground line conductor E1 is h, by setting h/d to 5 or less, the mutual inductance between the signal line conductors is reduced and the crosstalk level is targeted. This can be suppressed to -60 dB or less.

Therefore, in this embodiment as well, the signal line conductor and the ground line conductor are provided on the substrates 36 and 42 so as to satisfy h/d<5.

According to the above configuration, by operating the cam 35,
The pressure plate 32 presses the substrate 36 against the substrate 42, thereby making it possible to bring the end surfaces of the signal conductor and ground conductor of the opposing coaxial button terminals 37 and 43 into contact with each other with a specified pressure. In this case, the coaxial button type terminal 37.4 due to the attachment and detachment of the male connector 30 and the female connector 40 and the abutment of the male connector 30 and the female connector 40.
3 has no direct relationship with the electrical contact, and the pressure plate 32
The electrical conductivity between the coaxial button terminals 37 and 43 can be adjusted by adjusting the pressure generated by the male connector 3.
The force required to connect and disconnect the connector 40 and the female connector 40 can be arbitrarily set, and generally can be reduced. Therefore, if configured as a coaxial multi-pole connector device, ease of attachment/detachment, reduction of crosstalk, and easy setting of optimized electrical conductivity can be achieved.For example, a connector device used in an electronic scanning ultrasonic diagnostic device It is suitable as

Also, instead of being inserted into the male or female side of the connector and covering it as in the conventional case, the structure is such that the end faces of the two simply come into contact with each other, making it more compact than conventional connectors. do. This effect becomes greater as the number of poles increases, such as 100 to 200 poles, and contributes to ease of attachment and detachment.

The above embodiment is an example in which a coaxial button type terminal is configured, but as shown in FIG. The terminal 37' and the single button type terminal 37' to which the ground wire 51b is connected may be provided on the board 36 (and the board 42). Of course, it can be applied to single wires as well as coaxial wires.

In this case, when applied to a coaxial line, even if it is an n-pole connector device, a single wire can constitute a 2n-pole connector device.

In the above embodiment, the shape and material of each element are not specified, but for example, various substrates such as a flexible substrate, a glass epoxy substrate, a paper epoxy substrate, a Bakelite substrate, etc. can be used as appropriate. Regarding the shape of the button terminal, the end face is circular in the illustration, but
It may be semicircular, angular, etc. Furthermore, the signal line conductor and ground line conductor disposed on the substrates 36 and 42 can be made of copper foil patterns, electric wires, or the like.

In addition, various modifications can be made without departing from the spirit of the invention.

Effects of the Invention As described above, claim 1 of the present invention provides a first substrate on which a button-type terminal is disposed, and a first substrate on which a button-type terminal is disposed, the end surface of the button-type terminal being disposed on the first substrate. a second substrate disposed at a predetermined distance from the first substrate so as to face the end surface of the button-type terminal of the first substrate; an opening/closing mechanism that causes at least one of the first and second substrates to approach and separate from the other in order to abut and separate from the end surface of the button-type terminal of the second substrate; The invention according to claim 2 is such that the button-type terminal according to the invention according to claim 1 is constituted by a signal conductor and a grounding conductor.

According to the first aspect of the invention, by operating the opening/closing mechanism, the end surfaces of the two button-type terminals come into contact with each other, and electrical contact between the two is established. In this case, since the electrical contact is based on contact, attachment and detachment are easy, and the electrical conductivity can be adjusted by the contact force of the opening/closing mechanism. Moreover, according to claim 2, the structure is smaller than the conventional one because it is not inserted into either the male side or the female side and covered with the other as in the conventional case, but has a structure in which the end surfaces of both are simply in contact with each other. A coaxial button type terminal can be configured, and a multipolar coaxial connector device can be realized.

Therefore, according to the present invention, a connector device which can be miniaturized, is easy to attach and detach, and is suitable for a multi-polar coaxial type is shown in FIG. FIG. 3 is a perspective view showing the board in the same embodiment, FIG. 3 is a diagram showing the mounting state of the coaxial button terminal on the board in the same embodiment, FIG. 4 is a diagram showing the arrangement relationship of pattern conductors in the same embodiment, and FIG. 6 is a perspective view of a board showing another embodiment of the present invention, FIG. 6 is a perspective view of a connector device used in an electronic scanning ultrasonic diagnostic device, and FIG. 7 is a diagram showing a coaxial terminal and a single terminal arranged side by side. FIG. 8 is a perspective view showing the connector device, and FIG. 8 is a perspective view showing the pin plug.

30... Male connector, 31... Housing, 32...
...Cable mounting is on a stand, 33...Cable connector, 43...Coaxial button type terminal, 37'...Single type button terminal, 37a...Signal conductor, 37b...Insulating layer, 37c... Grounding conductor, 38... Grounding line conductor, 39... Signal line conductor, 40... Female connector, 41... Housing, 42... Board.

Figure 3 Figure 4 Applicant's agent: Patent attorney Takehiko Suzue jli5 diagram

Claims (2)

[Claims] (1) A first substrate provided with a button-shaped terminal; and a first substrate provided with a button-shaped terminal such that an end surface of the button-shaped terminal faces an end surface of the button-shaped terminal of the first substrate. a second substrate disposed at a predetermined distance from the first substrate; and a second substrate disposed at a predetermined distance from the first substrate; 1. A connector device comprising: an opening/closing mechanism for bringing at least one of two substrates closer to and away from the other. (2) The connector device according to claim 1, wherein the button-type terminal is composed of a signal conductor and a grounding conductor.