JP2525626B2 - High-speed signal connector - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a high-speed signal connector for interrupting, for example, a high-speed digital signal of a computer, and particularly to a high-speed signal suitable for transmitting a high-speed signal. It is about connectors.

(Prior art) As means for electrically connecting circuits and devices to each other,
2. Description of the Related Art Conventionally, connectors are often used for connection and detachment. As one type of this connector, there is a high-speed signal connector for transmitting a high-speed signal such as transmitting a high-speed digital signal from a computer or the like.

An example of this high-speed signal connector is described in, for example, Japanese Patent Laid-Open No. 60-68570, and the prior art will be described below along with this example.

FIG. 8 is a diagram showing an outline of the above conventional example. A large number of prismatic deep grooves 32 are formed by combining the conductive plates 30 and 31 in a matrix shape in the vertical and horizontal directions. A cylindrical coaxial pin (see FIG. 1) having a deep hole connected to the coaxial cable, the periphery of which is connected to the ground line of the coaxial cable and the signal pin being inserted therein, is provided in the deep groove 32 from the upper side of the figure. Is inserted.
As a result, the outer periphery of this coaxial pin is held by the contact portion 33. On the other hand, a signal pin is inserted into the deep hole of the coaxial pin through the hole 34 from the lower part of the figure, and the signal line of the coaxial cable is electrically coupled to this signal pin, and the ground pin is inserted from the hole 35 to make contact. Held by the portion 36, the ground wire and the ground pin of the coaxial cable are electrically coupled to each other via the path of the arrow A shown in the drawing of the plate 30. In this way, many coaxial pins are inserted from the upper part of the figure, and correspondingly, many signal pins and ground pins that are alternately arranged from the lower part of the figure are inserted, and Each signal pin corresponding to this is electrically coupled, and the ground line of each coaxial cable and each corresponding ground pin are electrically coupled to transmit a high-speed signal.

(Problems to be Solved by the Invention) In recent years, as ultra-high speed of computers and the like has advanced, a connector for high speed signals has also been required to be capable of transmitting higher speed signals (for example, GHz or higher).

The above-mentioned conventional example is excellent in transmitting a high-speed signal to some extent, but since the conductive member that forms the ground potential is formed by combining a number of plates in a grid pattern, the contact portions between the plates are in contact with each other. Impedance is generated by contact,
Further, the contact portion 33 that comes into contact with the outer circumference of the coaxial pin and the contact portion 36 that comes into contact with the ground pin are electrically coupled via the path of arrow A shown in the figure, and the contact portion between both contact portions is Due to the distance in the conductive path and the like, there is a limit to the frequency at which a correct waveform can be transmitted, and a connector capable of transmitting a higher speed signal has been desired.

In view of the above circumstances, the present invention ensures that the conductive members are easily kept at the same potential, and ensures that the two contact portions are electrically connected to each other at the shortest distance to reliably transmit a higher-speed signal. It is an object of the present invention to provide a high-speed signal connector that can be used.

(Means for Solving Problems) According to the present invention, a housing, a coaxial pin inserted from one of the housings and connected to a coaxial cable, a coaxial pin contact that contacts an outer periphery of the coaxial pin, and the other of the housings. In a high-speed signal connector provided with a conductive member provided with a ground pin contact that comes into contact with a ground pin inserted from a plurality of sheets, the conductive member is arranged near the tip of the coaxial pin at a substantially right angle to the coaxial pin. The coaxial pin contact is formed by cutting and raising any one of the plurality of stacked metal thin plates, and the ground pin contact is formed of the stacked metal thin plates. It is formed by cutting and raising from a material other than the above-mentioned arbitrary thin metal plate on the side opposite to the coaxial pin contact. Like adjacent ones of the overlapping sheet metal of it is characterized in that the electrically connected by the convex portion protruding from at least one of its sheet metal.

(Operation) In the high-speed signal connector of the present invention, the conductive member is 1
It is formed by stacking one or several thin metal plates for holding coaxial pins and one or several thin metal plates for holding ground pins. However, as in the conventional example described above, a large number of plates are combined in a grid pattern. Since the number of the conductive members is overwhelmingly smaller than that in the case where the conductive members are formed, the conductive members are easily kept at the same potential. Also, the thin metal plate for holding the coaxial pin and the thin metal plate for holding the ground pin are cut and raised to form the contact for holding the coaxial pin and the contact for holding the ground pin, respectively. And the ground pin are electrically connected by the shortest path. Furthermore, between each coaxial pin contact and the ground pin contact adjacent to each coaxial pin contact, either one of the coaxial pin holding metal thin plate and the ground pin holding metal thin plate adjacent to each other protrudes to the other side. Since it has a portion, both metal thin plates surely contact at the position of this convex portion, and it is guaranteed that they are electrically connected by the shortest path. From the above, the high-speed signal connector of the present invention can reliably transmit a higher-speed signal with a correct waveform as compared with the above-mentioned conventional example.

Embodiments Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of an embodiment of a high speed signal connector of the present invention. The right half and the left half of this cross-sectional view show the cross section of the position where the coaxial pin 3 and the signal pin 7 are inserted and the position where the ground pin 8 is inserted, respectively.

This high-speed signal connector 1 includes a large number of coaxial cables 2
A large number of coaxial pins 3 respectively connected to the coaxial pin receiving housing (housing) 5 having a large number of deep holes 4 inserted from the upper side of the drawing, and a plurality of coaxial pins 3 are planted on the substrate 6 corresponding to the coaxial pins 3. A large number of holes 9 and a large number of holes 10 for respectively receiving a large number of signal pins 7 and a large number of ground pins 8.
A signal pin and a ground pin receiving housing (housing) 11 having two pins, and two thin metal plates 12a, 12b for holding the coaxial pins held by the two housings 5, 11 and extending in a direction substantially perpendicular to the inserting direction of the pins. It is composed of one metal thin plate 12c for holding the ground pin (hereinafter, when referring to both the metal thin plate for holding the coaxial pin and the metal thin plate for holding the ground pin, it is simply referred to as "metal thin plate (conductive metal plate)". .).

When a large number of coaxial pins 3 are inserted into the deep hole 4 of the coaxial pin receiving housing 5 from above, the tip ends 3a of the coaxial pins 3 are made of metal thin plates 12a, 12b, 12b.
At each position crossing 12c, the thin metal plate 12a for holding the coaxial pin is cut and raised to form the cut-and-raised piece 13a in the direction in which the coaxial pin 3 is inserted as shown in the figure, and the thin metal plate 12b for holding the coaxial pin is formed. Cut and raised piece 13b
Is formed, and the cut-and-raised pieces (elastic contact pieces) 13a, 13b are configured to elastically hold the recess 3b on the outer periphery of the coaxial pin 3 inserted to a predetermined position. Further, a hole 14 penetrating the metal thin plates 12a, 12b, 13c is provided at the center of the cut-and-raised piece 13, and the tip 3a of the coaxial pin 3 is held in a state of penetrating the metal thin plates 12a, 12b, 12c. Is configured to. Thus, coaxial pin contacts 17 are formed corresponding to the respective coaxial pins 3.

Thus, by cutting and raising the two metal thin plates 12a and 12b for holding coaxial pins to form the cut and raised pieces 13a and 13b, respectively, one metal thin plate is cut and raised to form a plurality of cut and raised pieces. , It is possible to hold the coaxial pin with sufficient elastic force because it is possible to form the cut-and-raised pieces 13a and 13b having a sufficient length even at high density, as compared with the case where the coaxial pin is held between them. Become.

The diameter of the deep hole 4 of the coaxial pin receiving housing 5 is narrow so that the coaxial pin 3 can be smoothly inserted.
Further, as shown in the drawing, the holes are four times deeper than the height of the cut-and-raised pieces 13a and 13b. By configuring the deep hole 4 in this way, the coaxial pin 3 is vertically inserted into the center of the cut-and-raised pieces 13a, 13b from above in the figure, and is inserted while the relative position to the cut-and-raised pieces 13a, 13b is displaced. There is no possibility that the cut-and-raised pieces 13a and 13b will be damaged by being prevented from being inserted obliquely. Therefore, when the coaxial pin 3 is inserted into the deep hole 4, the outer periphery of the coaxial pin 3 and the cut-and-raised pieces 13a, 13b are surely brought into contact with each other, and the coaxial pin 3 is securely held by the cut-and-raised pieces 13a, 13b.

Each signal pin 7 is inserted from the tip 3a of each coaxial pin 3 through the hole 9 into each coaxial pin 3 which is inserted into the hole 14 and held by the cut-and-raised pieces 13a, 13b. The line and the signal pin 7 are electrically connected.

The ground pin 8 is inserted into the hole 10 at the same time that the signal pin 7 is inserted into the hole 9. Corresponding to each position where the ground pin 8 is inserted, the ground pin holding metal thin plate 12c is cut and raised in the direction in which the ground pin 8 is inserted,
A ground pin contact 18 is formed by the cut and raised piece 15 and the ground pin is elastically held by the cut and raised piece 15. Also this cut and raised piece 15
A hole 16 penetrating the metal thin plates 12a, 12b, 12c is provided in the center of the metal thin plates 12a, 12c.
It is held in a state of penetrating through b and 12c.

The thin metal plates 12a, 12b, 12c are cut and raised pieces 13a, 13b, 1c.
It is necessary that 5 has a sufficient elastic force to hold the pin and also has good conductivity to high frequencies. For example, a stainless steel plate plated with gold is used.

In the present embodiment, the tip 3a of the coaxial pin 3 is held in a state of penetrating downward through the hole 14 provided in the thin metal plates 12a, 12b, 12c, but the tip 3a is above the hole 14. Alternatively, the signal pin 7 may be inserted into the coaxial pin 3 by penetrating through the hole 14 upward. Further, in this embodiment, the holes 16 are provided in the metal thin plates 12a, 12b, 12c, and the ground pin 8 inserted from the lower side of the drawing has the metal thin plates 12a, 12b, 12c.
Although c is configured to penetrate upward in the figure, the length of the ground pin 8 is shortened so that the tip 8a of the ground pin 8 has a thin metal plate 12a,
The holes 16 may be omitted so that they are located below the drawings 12b and 12c. Further, in the present embodiment, the cut-and-raised pieces 13a, 13b and the cut-and-raised piece 15 are arranged in the direction in which the coaxial pin 3 is inserted and the ground pin 8, respectively.
Is formed by cutting and raising a thin metal plate in the direction of insertion, but the cutting and raising direction is not limited to this direction, and can also be formed by cutting and raising in the opposite direction to this embodiment,
Alternatively, both cut and raised pieces 13a, 13b, 15 can be formed by cutting and raising in the same direction above or below in the figure. The shape of both housings 5 and 11, the shape of each pin, the length, etc. are changed according to the direction of cutting and raising.

FIG. 2 is a sectional perspective view showing a main part of the embodiment shown in FIG. 1, and the same members as those in FIG. 1 are designated by the same reference numerals.

As shown in FIG. 2, three stacked metal thin plates 12a,
One of the cut-and-raised pieces 13a, 13b for holding the coaxial pin is formed by the coaxial pin holding metal thin plate 12a overlaid on the top of 12b, 12c, and the coaxial pin is held in the center. The other thin metal plate 12b forms the other 13b. Cut and raised piece to hold the ground pin 15
Is the metal sheet 12 for holding the ground pin, which is the lowest layer.
It is formed by c.

In this embodiment, as described above, the cut-and-raised pieces 13a, 13b for holding the coaxial pin by the two thin metal plates 12a, 12b for holding the coaxial pin are used.
However, the number is not limited to two, and if necessary, for example, three metal sheets for holding coaxial pins are cut and raised, and the three cut and raised pieces are used to cut the coaxial pin. The coaxial pin contacts may be formed to have a slightly low density, and if only one thin metal plate for holding the coaxial pins is used, a plurality of cutting pieces may be cut at each position for receiving each coaxial pin. A raised piece may be formed to hold the coaxial pin. In addition, in this embodiment, the cut-and-raised piece 15 that holds the ground pin is 1
It is formed only by the thin metal plate 12c for holding the ground pin, but when it is necessary to form a longer cut-and-raised piece and hold it with a stronger holding force, etc., a cut-and-raised piece for holding the coaxial pin is used. Similarly, a cut-and-raised piece for holding the ground pin may be formed by a plurality of thin metal plates for holding the ground pin (see FIG. 6F).

As shown in FIG. 2, the coaxial pin contacts 17 and the ground pin contacts 18 are alternately arranged close to each other, and the outer circumference of the coaxial pin 3 and the ground pin are electrically connected at the shortest distance. There is. Further, in order to secure the electrical contact between the metal thin plates, convex portions 19a and 19b are provided between each coaxial pin contact 17 and each corresponding ground pin contact 18.

FIG. 3 is an enlarged sectional view showing a part of the metal thin plates 12a, 12b, 12c in order to show an example of the convex portions 19a, 19b.

As shown in the figure, the convex portions 19a and 19b press the adjacent coaxial pin holding metal thin plate 12b and ground pin holding metal thin plate 12c, respectively, and electrical contact is surely made in this portion, so that the coaxial pin 3 It is guaranteed that the outer circumference and the ground pin are electrically connected with the shortest distance.

FIG. 4 is a perspective view showing the entire external appearance of the embodiment of the present invention shown in FIGS. 1 and 2 with a deep hole 4 into which the coaxial pin 3 is inserted facing upward and a part of which is cut away. Yes, the alternate long and short dash line in the figure indicates that the deep holes 4 having the same structure are lined up. Further, FIG. 5 is an enlarged view showing the notched portion of FIG.

As shown in FIG. 4, a large number of coaxial pins are inserted from the upper part of the drawing corresponding to the deep holes 4 provided, and the same number of signal pins and ground pins as the coaxial pins are inserted from the lower part of the drawing. Each is electrically coupled as described above.

Further, this embodiment is divided into four blocks I, II, III and IV as shown in FIG. This is due to a molding error of the housings 5 and 11 and a cutting error of the metal thin plates 12a, 12b and 12c, and a processing error such as drilling, for example, the coaxial pin 4 is cut and raised and is not inserted in the center of the pieces 13a and 13b. Is to prevent. Assuming that the metal thin plates 12a, 12b, 12c are also long continuous without dividing into blocks,
The above errors may be accumulated, and the above-mentioned defects may occur in a part of the connector 1. Therefore, by dividing into a plurality of blocks and reducing the dimensions of the metal thin plates 12a, 12b, 12c corresponding to the blocks as in the present embodiment, the above defects can be prevented. In this embodiment, the block is divided into four blocks, but this number is not limited to four, and the length of one block may be shorter than the length determined by the above-mentioned error and required mounting accuracy. Any number will do.

Inside the signal pin and ground pin receiving housing 11, a recess 20 corresponding to the size of the metal thin plates 12a, 12b, 12c is formed for each of the blocks, and the metal thin plates 12a, 12b, 12c are formed in the recess 20. Pile up and drop it from the top of the figure,
Further, from above, a convex portion 21 shaped to fit the concave portion 20 is formed.
The coaxial pin receiving housing 5 having is fitted. A protrusion 22 is provided on the inner wall 11a of the signal pin and ground pin receiving housing 11, and the thin metal plates 20a, 20b, 20c are provided.
A cutout corresponding to the protrusion 22 is provided on the side of the metal plate 12a, 12b, 12c so that when the metal plate 12a, 12b, 12c is dropped into the recess 20, its direction is uniquely determined (7A). (See Figures to 7C).

The metal thin plates 12a, 12b, 12c are dropped into the recesses 20 and the projections 21 of the coaxial pin receiving housing 5 are fitted over the recesses 20,
When the metal thin plates 12a, 12b, 12c are sandwiched between the housings 5, 11, the portions of the convex portions 19a, 19b of the coaxial pin holding metal thin plates 12a, 12b shown in FIG. The thin metal plate for holding the coaxial pin is sandwiched and pressed by the projection 23 provided on the lower part of the inside and the projection 24 provided on the tip of the projection 21.
The thin metal plates 12a, 12b, 12c are surely brought into conduction at the positions of the convex portions 19a, 19b of 12a, 12b.

6A to 6F are sectional views showing only a part of a thin metal plate of different embodiments of the present invention. The parts which do not need to be changed from the above-mentioned embodiment are designated by the same reference numerals as those in FIG. 3 and their explanations are omitted. Further, the same numbers are given to the same parts between the respective embodiments.

The embodiment shown in FIG. 6A is the embodiment described above (see FIG. 3).
The difference is that part of the upper portions of the cut-and-raised pieces 13a, 13b are further cut-and-raised to form claw portions 25a, 25b, respectively. Replace the thin metal plates 12a, 12b, 12c shown in FIG.
Replacing with the thin metal plates 12a, 12b, 12c in the figure, the claw portions 25a, 25b fit into the recess 3b on the outer surface of the coaxial pin 3 shown in FIG. 1, and unless the coaxial pin 3 is strongly pulled out, this connector 1 You will not be able to pull it out. That is, by providing the claw portions 25a and 25b in this manner, the claw portion 25
Compared with the case where a and 25b are not provided, the coaxial pin 3 once inserted and held is more reliably prevented from falling off, and when it is necessary to pull it out, it can be easily pulled out.

The embodiment shown in FIG. 6B is different from the embodiment shown in FIG. 6A in the shape of the convex portions 19a ′ and 19b ′. As described above, it is not always necessary to cut and bend the convex portion as shown in FIG. 6A, and it is only necessary that both the adjacent thin metal plates protrude so as to surely conduct electricity at the position of the convex portion.

In the embodiment shown in FIG. 6C, the metal thin plate for holding the coaxial pin is not provided with a protrusion corresponding to the protrusion 19a shown in FIG. 6A. However, the outer circumference of the coaxial pin and the ground pin are electrically connected to each other reliably via the cut-and-raised pieces 13b, the convex portions 19b, and the cut-and-raised pieces 15.

In the embodiment shown in FIG. 6D, the coaxial pin holding metal thin plate 12a,
12b is not provided with a convex portion corresponding to the convex portions 19a, 19b shown in FIG. 6A, the ground pin holding metal thin plate 12c,
A convex portion 19c protruding in the direction of the coaxial pin holding metal thin plate 12b is provided. Also in this case, the outer periphery of the coaxial pin and the ground pin are electrically connected to each other reliably via the cut-and-raised pieces 13b, the convex portions 19c, and the cut-and-raised pieces 15.

In the embodiment shown in FIG. 6E, the cut-and-raised pieces 13a and 13b for holding the coaxial pin are provided on one thin metal plate 12a for holding the coaxial pin. As described above, the coaxial pin holding metal thin plate may be formed of one sheet depending on the heights of the cut and raised pieces 13a and 13b, the density of the coaxial pin contacts, and the like. The outer periphery of the coaxial pin and the ground pin are electrically connected to each other through the paths of the cut-and-raised pieces 13a and 13b, the convex portion 19a, and the cut-and-raised piece 15.

The embodiment shown in FIG. 6F uses two thin metal sheets 12c and 12d for holding the ground pin in order to lengthen the cut and raised pieces 15a 'and 15b' for holding the ground pin. As described above, a plurality of thin metal plates for holding the ground pin can be used, like the thin metal plate for holding the coaxial pin. The outer circumference of the coaxial pin and the ground pin are surely electrically connected to each other via the cut-and-raised piece 13b, the convex portion 19b, and the cut-and-raised piece 15a '.

As shown in FIGS. 6C to 6F, it is not necessary to provide the convex portion for surely connecting the metal thin plates to each other so that all the metal thin plates are connected to each other. Either one of the thin plate and the ground pin holding metal thin plate may be projected to the other side.

FIGS. 7A, 7B, and 7C show a coaxial pin receiving housing (housing) 5 ', a signal pin and ground pin receiving housing 11', respectively, of one embodiment of the present invention having only one block and superimposed. It is a perspective view of a set of metal thin plates 12a ', 12b', 12c '. The alternate long and short dash line in FIG. 7A indicates that the deep hole 4'where the coaxial pin is inserted is continuous, and the alternate long and short dash line in FIG. 8C is the coaxial pin contact 1
It shows that 7'is continuous.

A hole 9'for inserting the signal pin and a hole for inserting the ground pin are formed in the lower portion of the recess 20 'of the signal pin and ground pin receiving housing (housing) 11' shown in FIG. 7B.
10 'is provided. On the side surface of the recess 20 ', a protrusion 22a',
22b ', 22c', 22d ', 22e' are provided, and correspondingly, grooves are formed in the convex portion 21 'of the coaxial pin receiving housing 5'of FIG. 7A.
26a ', 26b', 26c ', 26d', 26e 'are provided, and the metal thin plates 12a', 12b ', 12c' have notches 27a ', 27b', 27
c ', 27d', 27e 'are provided. With such a structure, the metal thin plates 12a ', 12b', 12c 'are recessed into the recess 2
When dropping into the 0'and when fitting the convex portion 21 'into the concave portion 20', the concave portion is surely prevented from being fitted in the opposite direction, and the occurrence of defects due to incorrect assembly is prevented. You can

(Effects of the Invention) As described in detail above, in the high-speed signal connector of the present invention, the coaxial pin contact is formed by cutting and raising one or several thin metal sheets for holding the coaxial pin. The ground pin contacts are formed by cutting and raising one or a few thin metal plates for holding the ground pins, and the coaxial pin contacts are adjacent to each other between the coaxial pin contacts and the ground pin contacts adjacent to the coaxial pin contacts. Since one of the pin-holding metal thin plate and the ground pin-holding metal thin plate has a protrusion protruding to the other side, the plurality of metal thin plates are easily kept at the same potential, and the outer circumference of the coaxial pin is This ensures that the ground pin is electrically connected to the ground pin at the shortest distance, and that higher-speed signals can be reliably transmitted with the correct waveform. You.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of a high-speed signal connector of the present invention, FIG. 2 is a sectional perspective view showing a main part of the embodiment shown in FIG. 1, and FIG. 3 is shown in FIG. Sectional drawing which expands and shows a part of thin metal plate of the Example shown, FIG. 4 shows the external appearance of the one Example of this invention shown in FIGS. FIG. 5 is an enlarged perspective view of the cutout portion of FIG. 4, and FIGS. 6A to 6F show different embodiments of the present invention.
7A, 7B, and 7C are sectional views showing only a part of a thin metal plate, respectively showing a coaxial pin receiving housing, a signal pin and a ground pin receiving of an embodiment of the present invention having only one block. FIG. 8 is a perspective view of a housing and a pair of stacked metal thin plates, and FIG. 8 is a schematic view of a conventional example. 1 ... High-speed signal connector 2 ... Coaxial cable 3 ... Coaxial pin 5,11,11 '... Housing 8 ... Ground pin 12a, 12a', 12b, 12b ', 12c, 12c', 12d ... Metal Thin plate 17,17 ′ …… Coaxial pin contact 18 …… Ground pin contact 19a, 19a ′, 19b, 19b ′, 19c …… Convex part

Claims (1)

(57) [Claims] 1. A housing, a coaxial pin that is inserted from one of the housings and connected to a coaxial cable, a coaxial pin contact that contacts the outer periphery of the coaxial pin, and a ground pin that is inserted from the other side of the housing. A high-speed signal connector including a conductive member provided with a ground pin contact, wherein the conductive member is composed of a plurality of overlapping metal thin plates arranged substantially perpendicular to the coaxial pin near the tip of the coaxial pin, and The coaxial pin contact is formed by cutting and raising any one of the plurality of overlapping metal thin plates, and the ground pin contact is formed from one of the plurality of overlapping metal thin plates other than the arbitrary metal thin plate. It is formed by cutting and raising it on the side opposite to the coaxial pin contact, and A high-speed signal connector, wherein objects that come into contact with each other are electrically connected by at least a convex portion protruding from one of the metal thin plates.