JP2002198137A - Coaxial connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector, in which working of coaxial cable can be simplified and which is sized smaller than that the conventional and which has a low cost. SOLUTION: The coaxial connector 2A has a sheet-formed anisotropic conductive rubber member R being conductive only in the thickness direction, and retaining members 20, 22 to mutually retain end parts of a pair of coaxial cables 1A, 1B in a pressing state in a shaft line direction, by pinching the conductive rubber member R in the thickness direction. The retaining members 20, 22 are constituted of the first retaining part 20, to retain the end part of the coaxial cable 1A of one side and of the second retaining part 22 for retaining the end part of the coaxial cable 1A of the other side, and to be inserted and mounted with respect to the first retaining part 20. By the conductive rubber member R, the mutual central conductors 12 and mutual outer conductors 14 at the end faces of both coaxial cables 1A, 1B are respectively connected electrically.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial connector for connecting the ends of a coaxial cable or between the end of a coaxial cable and a circuit board.

[0002]

2. Description of the Related Art FIG. 17 shows a structure of a general coaxial cable to which the present invention is applied. The coaxial cable 1 shown in FIG. 17 has a core-shaped central conductor 12 and a reticulated outer conductor 14 disposed coaxially around the core-shaped central conductor 12. An insulator 16 is provided between the center conductor 12 and the outer conductor 14, and the periphery of the outer conductor 14 is covered by a jacket 18 made of an insulating material.

FIG. 19 shows an example of a conventional coaxial connector for connecting the ends of the above coaxial cables. Conventional coaxial connector 1 shown in FIG.
The end of the coaxial cable connected by 02 needs to be processed as follows. That is, first, FIG.
As shown in FIG. 19, the center conductor 12, the insulator 16 and the outer conductor 14 are processed so as to be exposed by a predetermined length in order from the front end, and then, as shown in FIG.
4 needs to be folded back so as to cover the periphery of the outer cover 18.

A coaxial connector 102 shown in FIG.
Is a female connector member 124 into which the center conductor 12 of one coaxial cable 1A is inserted, and the other coaxial cable 1B
And the male core connector member 127 is inserted. The latter male core connector member 127 has a pin 127a that fits into the hole 124a of the former female core connector member 124.

The coaxial connector 102 has a male cylindrical member 120 into which the outer conductor 14 of one coaxial cable 1A is inserted in a folded state, and an outer conductor 14 of the other coaxial cable 1B inserted in a folded state. Female tubular member 122
And The former male tubular member 120 is fitted into the distal end portion 128 of the latter female tubular member 122.
Five.

An insulating member 126 is provided between the male cylindrical member 120 and the female core connector member 124, and an insulating member 129 is provided between the female cylindrical member 122 and the male core connector member 127. ing. Further, a lock tube 130 is provided for covering the outer periphery of the male tubular member 120 and the female tubular member 122 fitted with each other and holding them.

[0007]

Such a conventional coaxial connector has the following problems. That is,
Since it is necessary to perform the above-described complicated processing on the ends of the coaxial cables 1A and 1B, the connection work becomes very complicated. In recent years, a coaxial cable having an outer diameter of about 1 mm has been put into practical use. However, in such an ultrafine coaxial cable, complicated processing of an end portion may be difficult.

Also, many components 1 corresponding to the center conductor 12 and the outer conductor 14 of each of the coaxial cables 1A and 1B, respectively.
20, 122, 124 to 129, ... are required,
It is difficult to reduce the size, and the cost is high. And the coaxial cables 1A, 1B
Not only in the case where they are connected to each other but also in a coaxial connector for connecting a coaxial cable to a circuit board or the like, basically the same problem may occur.

The present invention has been made in view of the above points, and has as its object to provide a connector that can simplify the processing of a coaxial cable and that is smaller and less expensive than the conventional connector.

[0010]

According to a first aspect of the present invention, there is provided a coaxial connector for connecting ends of a coaxial cable having at least a center conductor and an outer conductor. An anisotropic conductive rubber member, and a holding member for holding the end faces of the coaxial cable in a thickness direction with the conductive rubber member sandwiched therebetween and holding the end faces of the coaxial cable in a pressed state in the axial direction. It is a coaxial connector.

According to the first aspect, the center conductors and the outer conductors at the end faces of both coaxial cables are electrically connected to each other by the conductive rubber member.
Therefore, the electrical connection can be performed without changing the end face of the coaxial cable simply without changing the end face which is cut substantially vertically. Further, it is not necessary to provide many parts corresponding to the center conductor and the outer conductor of each coaxial cable as in the conventional connector.

In a second aspect based on the first aspect, the holding member holds a first end of one coaxial cable.
It has a holding part and a second holding part that holds the end of the other coaxial cable and is inserted into the first holding part. At least one of the first holding part and the second holding part The conductive rubber member is attached.

According to the second aspect, in the first aspect, the second holding portion is inserted into the first holding portion to connect the ends of the coaxial cable via the conductive rubber member. Can be done.

According to a third aspect of the present invention, there is provided a coaxial connector for connecting an end portion of a coaxial cable having at least a center conductor and an outer conductor to a circuit board having a center conductor connection portion and an outer conductor connection portion. A sheet-shaped anisotropic conductive rubber member that can be conducted only in the thickness direction, and the central conductor and the external conductor at the end face of the coaxial cable, which are electrically connected to the central conductor connection portion and the external conductor connection portion of the circuit board, respectively. And a center conductive member and an external conductive member arranged corresponding to each other, and an end face of the coaxial cable is pressed against the center conductive member and the external conductive member by sandwiching the conductive rubber member in a thickness direction. And a holding member for holding the coaxial connector.

According to the third aspect of the present invention, the center conductor and the outer conductor on the end face of the coaxial cable are connected to the center conductor connecting portion of the circuit board and the outer conductor via the center conductive member and the outer conductive member, respectively, by the conductive rubber member. It is electrically connected to the conductor connection part. Therefore, the electrical connection can be performed without changing the end face of the coaxial cable simply without changing the end face which is cut substantially vertically. Further, it is not necessary to provide many parts corresponding to the center conductor and the outer conductor of each coaxial cable as in the conventional connector.

In a fourth aspect based on the third aspect, the holding member is provided on the first circuit board attached to the circuit board.
A holding portion for holding an end of the coaxial cable;
It has a second holding portion connected to the holding portion, and the conductive rubber member is attached to at least one of the first holding portion and the second holding portion.

According to the fourth aspect, in the third aspect, the second holding portion is connected to the first holding portion, so that the end portion of the coaxial cable and the circuit board are connected via the conductive rubber member. Connection can be made.

In a fifth aspect based on the third or fourth aspect, the center conductive member has a cable-side contact portion that contacts the conductive rubber member and a board-side contact portion that contacts a center conductor connection portion of the circuit board. The coil spring contact has a contact portion and a coil spring provided between the contact portions.

According to the fifth aspect, in the third or fourth aspect, the contact portion of the coil spring contact elastically contacts the conductive rubber member or the central conductor connecting portion of the circuit board. , The electrical connection between them can be made more reliable.

According to a sixth aspect of the present invention, an end of a coaxial cable having at least a center conductor and an outer conductor is provided by connecting a center conductor connecting portion disposed on the end face of the coaxial cable to correspond to the center conductor and the outer conductor, respectively. A coaxial connector for connecting to a circuit board having an external conductor connection portion, wherein a sheet-shaped anisotropic conductive rubber member capable of conducting only in a thickness direction and an end face of the coaxial cable are connected to the conductive rubber. A coaxial connector characterized by comprising a holding member for holding the member in a thickness direction and holding the member in a pressed state against the central conductor connection portion and the external conductor connection portion of the circuit board.

According to the sixth aspect, the center conductor and the outer conductor on the end face of the coaxial cable are electrically connected to the center conductor connection portion and the outer conductor connection portion of the circuit board, respectively, by the conductive rubber member. Therefore, the electrical connection can be performed without changing the end face of the coaxial cable simply without changing the end face which is cut substantially vertically. Further, it is not necessary to provide many parts corresponding to the center conductor and the outer conductor of each coaxial cable as in the conventional connector.

In a seventh aspect based on the sixth aspect, the holding member is insertable into the circuit board while holding the end of the coaxial cable and the conductive rubber member. Things.

According to the seventh aspect, in the sixth aspect, the holding member is inserted into the circuit board to connect the end of the coaxial cable to the circuit board via the conductive rubber member. I can do it.

[0024]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 7 are views showing an embodiment of a coaxial connector according to the present invention. Note that, in the embodiment of the present invention shown in FIGS.
The same components as the common coaxial cable shown in FIG.
The same reference numerals as in FIG.

[First Embodiment] First, a first embodiment of the present invention will be described with reference to FIGS.

<Configuration> Coaxial connector 2A of the present embodiment
Is a pair of coaxial cables 1A and 1B as shown in FIG.
Are used to connect the ends. This coaxial connector 2A has a sheet-shaped anisotropic conductive rubber member R that can conduct only in the thickness direction, and the end surfaces of a pair of coaxial cables 1A and 1B sandwiching the conductive rubber member R in the thickness direction. Holding members 20, for holding each other in a pressed state in the axial direction,
22.

As the anisotropic conductive rubber member R, as shown in FIG. 3 (a), a large number of gold-plated metal fine wires r2 are arranged at high density in a silicone rubber base material r1. A known configuration is known. The large number of thin metal wires r2 extend in alignment with each other in the thickness direction of the conductive rubber member R at intervals. For example, the thickness of the thin metal wire r2 is 0.5 μ and the pitch interval is 0.1 mm or less. Further, as shown in FIG. 3B, an anisotropic conductive rubber member R having a configuration in which a large number of metal particles r3 are arranged at a high density in a base material r1 of silicone rubber is also known.

The holding members 20 and 22 hold a first holding portion (receptacle) 20 for holding one end of the coaxial cable 1A and an end of the other coaxial cable 1B. And a second holding portion (plug) 22 inserted into the portion 20. Each of the first and second holding portions 20 and 22 has a substantially cylindrical shape as a whole.

The first holding part 20 is provided between FIGS.
As shown in FIG. 5, an insertion hole 23 into which the second holding portion 22 is inserted.
And a cable holding hole 24 for holding an end of the coaxial cable 1A in a state penetrating into the insertion hole 23. A plurality of insertion auxiliary slits 26 extending in the axial direction are formed in the outer wall portion corresponding to the insertion holes 23 at intervals in the circumferential direction. An engagement protrusion 25 extending in the circumferential direction is formed on the inner peripheral surface on the entrance side of the insertion hole 23.

Next, as shown in FIG. 1, the second holding portion 22 has a holding groove 27 for holding the conductive rubber member R therein,
A cable holding hole 26 for holding the end of the coaxial cable 1B (in a state of being pressed against the conductive rubber member R in the holding groove 27).
And The end of the coaxial cable 1A held by the first holding part 20 can be pressed against the conductive rubber member R in the holding groove 27 so that the end of the second holding part 22 has a holding groove 27. An opening 28 communicating with the inside is provided. The outer circumferential surface of the second holding portion 22 has a circumferential engaging groove 2 corresponding to the engaging protrusion 25 of the first holding portion 20.
9 are formed.

The ends of the coaxial cables 1A and 1B in the cable holding holes 24 and 26 of the holding portions 20 and 22 can be held by desired fixing means such as various kinds of bonding and caulking (described later). The same applies to the other embodiments described above.

<Function and Effect> Next, the function and effect of the present embodiment having the above-described configuration will be described.

According to the present embodiment, by inserting the second holding portion 22 into the insertion hole 23 of the first holding portion 20, the end faces of the pair of coaxial cables 1A and 1B are connected to each other by the conductive rubber member. R can be pressed against each other in the axial direction with the R interposed in the thickness direction. In this case, the engagement protrusion 25 of the first holding portion 20
The engagement / pressing state is maintained by the engagement of the engagement groove 29 of the second holding portion 22 with the engagement groove 29. In this state, the center conductors 12 and the outer conductors 14 at the end faces of both coaxial cables 1A and 1B are electrically connected to each other by the conductive rubber member R.

Accordingly, the electrical connection can be reliably performed without any special processing on the ends of the coaxial cables 1A and 1B, with the end face 10 (FIG. 17) cut vertically and substantially vertically. . Further, it is not necessary to provide many components corresponding to the center conductor 12 and the outer conductor 14 of each of the coaxial cables 1A and 1B unlike the conventional connector. For this reason, the processing of the coaxial cables 1A and 1B is extremely simplified, and the structure of the connector 2A itself is also simplified.
It is possible to provide a much smaller and lower cost connector than ever before.

<Modification> In the present embodiment, the case where the conductive rubber member R is mounted in the second holding portion 22 has been described.
Can also be configured to be attached.

The configuration of the holding members 20 and 22 is not limited to the above-described configuration, but may be a pair of coaxial cables 1.
Other configurations may be used as long as the end surfaces of A and 1B can be held in a pressed state in the axial direction with the conductive rubber member R interposed therebetween in the thickness direction.

[Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIGS. In addition,
In the embodiment shown in FIGS. 4 and 5, FIGS.
The same reference numerals are given to the same components as those in the first embodiment described above, and the detailed description is partially omitted.

<Configuration> Coaxial connector 2B of the present embodiment
4 is for connecting the end of the coaxial cable 1 to the circuit board 3 having the central conductor connection portion 32 and the external conductor connection portion 34, as shown in FIG. The coaxial connector 2B is connected to the first
A holding member 5 composed of a holding portion (receptacle) 50 and a second holding portion (plug) 52 that holds an end of the coaxial cable 1 and is inserted (connected) to the first holding portion 50.
0,52.

The first holding unit 50 includes the second holding unit 5
2 has an insertion hole 23 into which is inserted, and a central conductive member 42 and an external conductive member 44 provided inside. The central conductive member 42 and the external conductive member 44 are coaxially arranged with an insulator 43 interposed therebetween.
Are electrically connected to the central conductor connecting portion 32 and the external conductor connecting portion 34. Further, a plurality of insertion assisting slits similar to the slits 26 shown in FIG. 2 are formed in an outer wall portion corresponding to the insertion holes 23. An engagement protrusion 2 extending in the circumferential direction is provided on the inner peripheral surface on the entrance side of the insertion hole 23.
5 are formed.

Next, the second holding portion 52 has an upright portion 52a and a horizontal portion 52b, and has an L-shaped curved tubular shape. Inside the rubber member holding groove 27 for holding the conductive rubber member R and the end of the coaxial cable 1 (the holding groove 2
7 has a cable holding hole 26 for holding (in a state of being pressed against the conductive rubber member R). The cable holding hole 26 penetrates to the tip of the upright portion 52a, through which the central conductive member 42 and the external conductive member 44 of the first holding portion 50 can be pressed against the conductive rubber member R. . An engagement groove 29 corresponding to the engagement protrusion 25 of the first holding portion 50 is formed on the outer peripheral surface of the upright portion 52 a of the second holding portion 52.

The holding members 50 and 52 hold the end face 10 (FIG. 17) of the coaxial cable 1 with the center conductive member 42 and the external conductive member 4 sandwiching the conductive rubber member R in the thickness direction.
4 is held in a pressed state. In this case, the center conductive member 42 and the outer conductive member 44 are arranged corresponding to the center conductor 12 and the outer conductor 14 on the end face 10 of the coaxial cable 1 respectively.

As the center conductive member 42, a coil spring contact as shown in FIG. 5 is used. The coil spring contact 42 has a cable-side contact portion 43 that contacts the conductive rubber member R and a board-side contact portion 45 that contacts the center conductor connection portion 32 of the circuit board 3.
These contact portions 43 and 45 are provided at both ends of a substantially cylindrical case 49 so as to be slidable in the axial direction, respectively. In the case 49, the contact portions 4
A compression coil spring 47 is interposed between 3, 45.

The external conductive member 44 shown in FIG. 4 has a cylindrical upright portion 44a and a ring-like flange portion 44b extending radially outward from the lower edge of the upright portion 44a. The upper end surface of the upright portion 44a is pressed against the conductive rubber member R, and the bottom surface of the flange portion 44b is fixed to the external conductor connection portion 34 by soldering or the like.

<Function and Effect> Next, the function and effect of the present embodiment having the above-described configuration will be described. According to the present embodiment, by inserting the second holding portion 52 into the first holding portion 50, the end surface of the coaxial cable 1 is sandwiched by the center conductive member 42 with the conductive rubber member R in the thickness direction. And the outer conductive member 44.

In this case, the engagement protrusion 25 of the first holding portion 50
The insertion and pressing state is held by the engagement of the engagement groove 29 of the second holding portion 52 with the engagement groove 29. In this state, the conductive rubber member R causes the center conductor 12 and the outer conductor 14 on the end face 10 of the coaxial cable 1 to move through the center conductive member 42 and the outer conductive member 44, respectively, to the center conductor connecting portion of the circuit board 3. 32 and an external conductor connection portion 34.

Accordingly, the electrical connection can be reliably performed with the end face 10 (FIG. 17) cut substantially vertically without special processing on the end of the coaxial cable 1. Further, it is not necessary to provide many components corresponding to the center conductor 12 and the outer conductor 14 of the coaxial cable 1 unlike the conventional connector. Therefore, the coaxial cable 1
Is extremely simplified, and the structure of the connector 2B itself is also simplified, so that it is possible to provide a much smaller and lower cost connector than before.

Further, the end of the coaxial cable 1 extending substantially parallel to the substrate 3 is
The connector 2B can be connected vertically to the board 3. At this time, the height of the connector 2B and the coaxial cable 1 from the board 3 can be reduced by downsizing the coaxial connector 2B.

Further, the contact portions 43 and 45 of the coil spring contact 42 elastically abut against the conductive rubber member R and the central conductor connecting portion 32 of the circuit board 3 so that the contact portions 43 and 45 with the central conductor 12 of the coaxial cable 1 can be formed. Electrical connection between the central conductor connection portions 32 of the circuit board 3 can be made more reliable.

<Modification> In this embodiment, the case where the conductive rubber member R is mounted in the second holding portion 52 has been described.
Can also be configured to be attached.

The configuration of the holding members 50 and 52 is not limited to the above-described configuration. The end surfaces of the coaxial cable 1 are sandwiched between the conductive rubber member R in the thickness direction and the center conductive member 42 and the external conductive member. Any other structure may be used as long as it can be held in a pressed state with respect to 44.

[Third Embodiment] Next, a third embodiment of the present invention will be described with reference to FIGS. In addition,
In the present embodiment shown in FIGS. 6 and 7, the same components as those in the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and the detailed description is partially omitted.

<Configuration> Coaxial connector 2C of the present embodiment
6 is for connecting the end of the coaxial cable 1 substantially perpendicularly to the circuit board 3 having the central conductor connection portion 72 and the external conductor connection portion 74, as shown in FIG. In this case, as shown in FIGS. 6 and 7, the center conductor connecting portion 72 and the outer conductor connecting portion 74 of the circuit board 3 are respectively connected to the center conductor 12 and the outer conductor 14 on the end face 10 (FIG. 17) of the coaxial cable 1. It is arranged correspondingly.

More specifically, the substantially cylindrical center conductor connecting portion 7
2 penetrates the circuit board 3, and a ring-shaped external conductor connection part 74 arranged coaxially with the center conductor connection part 72 is formed on the surface of the substrate 3. Four arc-shaped slots 30 penetrating the circuit board 3 are formed outside the external conductor connection part 74. Then, the conductor lines 73 and 75 connected to the center conductor connection portion 72 and the external conductor connection portion 74 so as to avoid these slots 30.
Are respectively formed on the back surface and the front surface of the substrate 3 (the above are referred to as the front surface and the back surface of the substrate 3 with reference to the vertical direction in FIG. 6 for convenience, but this definition is relative and The front and back sides can also be interchanged.

Then, the coaxial connector 2C of the present embodiment
Has a holding member 60 as shown in FIG. The holding member 60 holds the end surface of the coaxial cable 1 in a pressed state against the center conductor connection portion 72 and the external conductor connection portion 74 of the circuit board 3 with the conductive rubber member R interposed therebetween in the thickness direction. It is configured. The holding member 60 can be inserted into the circuit board 3 while holding the end of the coaxial cable 1 and the conductive rubber member R.

More specifically, the holding member 60 has a substantially cylindrical shape as a whole, but the leading end (the lower end in FIG. 6) has the above-mentioned slot 30 (FIG. 7) of the circuit board 3.
There are formed four tongue pieces 66 to be inserted into the tongue.
At the tip of each tongue 66, a claw 66a for locking the tongue 66 to the corresponding slot 30 is formed. An insulating cylindrical holding member 64 that holds the conductive rubber member R is attached to the inner peripheral surface of the holding member 60.

<Operation and Effect> Next, the operation and effect of the present embodiment having the above-described configuration will be described. According to the present embodiment, by inserting the holding member 60 into the circuit board 3, the end face of the coaxial cable 1 is sandwiched by the conductive rubber member R in the thickness direction, and the center conductor connecting portion 72 and the external conductor The connection portion 74 can be pressed.

In this case, each tongue piece 66 of the holding member 60
Is locked to the slot 30 of the board 3 by the claw portion 66a, so that such an inserted and pressed state is maintained. In this state, the conductive rubber member R
The center conductor 12 and the outer conductor 14 on the end face 10 of the coaxial cable 1 are electrically connected to the center conductor connecting portion 72 and the outer conductor connecting portion 74 of the circuit board 3, respectively.

Accordingly, the electrical connection can be reliably performed without any special processing on the end of the coaxial cable 1 and the end face 10 cut simply vertically. Further, it is not necessary to provide many components corresponding to the center conductor 12 and the outer conductor 14 of the coaxial cable 1 unlike the conventional connector. For this reason, the processing of the coaxial cable 1 is extremely simplified, and the structure of the connector 2C itself is also simplified, so that it is possible to provide a much smaller and lower cost connector than before.

<Modification> Holding member 6 in this embodiment
The configuration of No. 0 is not limited to the configuration described above, and the end face of the coaxial cable 1 is pressed against the center conductor connection portion 72 and the external conductor connection portion 74 with the conductive rubber member R sandwiched in the thickness direction. As long as it can be held, it may have another configuration.

The configurations of the central conductor connection portion 72 and the external conductor connection portion 74 in the circuit board 3 are not limited to the above-described configurations, but may have other configurations. For example, by making the circuit board 3 have a multilayer structure,
It is also possible to configure so that the center conductor connecting portion 72 does not penetrate the substrate 3 and the conductor line 73 is not exposed on the back surface of the substrate 3.

[Fourth Embodiment] Next, FIGS.
The fourth embodiment of the present invention will be described with reference to FIG. Note that, in the present embodiment shown in FIGS.
The same components as those of the first embodiment shown in FIG. 3 to FIG.

<Configuration> Coaxial connector 2D of the present embodiment
As shown in FIGS. 8 and 9, the end of the coaxial cable 1 is connected to a center conductor connecting portion and an outer conductor connecting portion (not shown).
This is for connecting to the circuit board 3 having. The coaxial connector 2D holds a first holding portion (fixed plug) 8 attached to the circuit board 3 and an end of the coaxial cable 1 and a second holding portion connected to the first holding portion 8. (Mounting jacks) 9 and holding members 8 and 9.

The first holding unit 8 is provided with the components shown in FIGS.
As shown in FIG. 2, a metal main body 80 and a central conductive member 86, and a resin insulator 88 interposed between the metal main body 80 and the central conductive member 86 (shown in FIGS. 10 and 11 with a pear pattern). And The main body 80 has a bottom plate portion 82 fixed to the external conductor connection portion of the substrate 3 by soldering or the like.
And a pair of holding plates 84 extending substantially vertically upward from both left and right sides of the bottom plate portion 82.

At the approximate center of the bottom plate portion 82 of the main body 80, a disk-shaped portion (external conductive member) 85 having a center hole 85a (FIGS. 11 and 12) is formed so as to protrude upward. The central conductive member 86 has a mounting portion 86b fixed to the central conductor connecting portion of the substrate 3 by soldering or the like, and a conductive pin 86a extending upward from the mounting portion 86b. The conductive pin 86a is disposed substantially concentrically with respect to the center hole 85a of the disc-shaped portion 85. The insulator 88 is connected to the bottom plate 8 of the main body 80.
2 and the disc-shaped portion 85, the mounting portion 86 b of the central conductive member 86, and the conductive pin 86 a are provided so as to be filled.

Each holding plate 84 of the main body 80 is provided with an engaging hole 84a and a tip inclined portion 84b. The tip inclined portions 84b of the pair of holding plates 84 are
From the viewpoint of facilitating the reception of the second holding portion 9 between the holding plates 84, the second holding portions 9 are inclined so as to move away from each other toward the distal end.

The main body 80 of the first holding portion 8 including the holding plate 84 and the disc-shaped portion 85 can be integrally formed by pressing a metal plate or the like.

Next, the second holding part 9 has an insulating case 90 as shown in FIGS.
0 has a connection hole 92 into which the disc-shaped portion 85 of the first holding portion 8 is inserted.

In the case 90, a cavity 94 (FIG. 15) communicating with the connection hole 92 is formed. This hollow part 9
Reference numeral 4 denotes cable holding portions 94a and 94b, a ring holding portion 94c, and a rubber member holding portion 94d for holding the end of the coaxial cable 1, the conductive ring 98 and the conductive rubber member R (FIGS. 13 and 14), respectively. It is configured.
The cable holding portion 94 a is open at one end of the case 90.

On the outside of the case 90 (FIG. 8), there are provided a pair of concave-shaped receiving portions 96 located on both sides of the connection hole 92. The pair of receiving portions 96 are configured to be sandwiched by a pair of holding plates 84 of the first holding portion 8, and each of the engagement protrusions 96 a to be engaged with the corresponding one of the engagement holes 84 a of the corresponding holding plate 84. (See FIGS. 8 and 9).

The end of the coaxial cable 1 held by the second holding section 9 will be described with reference to FIGS. In the present embodiment, the end of the coaxial cable 1 is not only cut substantially vertically, but also the jacket 18 is removed by a predetermined length from the end to expose the outer conductor 14. However, unlike the related art, the outer conductor 14 is not folded back.

A metal conductive ring 98 surrounding the outer conductor 14 is attached to the end of the coaxial cable 1 by caulking or soldering. Then, the end face 10 'of the coaxial cable 1 (see FIGS. 13 and 1)
6), the inner conductor 12, the insulator 16, and the outer conductor 1
4 and the conductive ring 98 are substantially flush.

The cable holding portions 94a and 94b formed in the case 90 (FIG. 15) hold the outer jacket 18 and the outer conductor 14 of the coaxial cable 1, respectively. In addition, the cable holding portion 94b
From the cable holding portion 94a side toward the ring holding portion 94c side, first, the case 9 is similar to the cable holding portion 94a.
0, extend in the longitudinal direction (extending direction of the coaxial cable 1), then bend slightly in the middle and extend upward, and then bend greatly downward so as to face downward perpendicular to the longitudinal direction of the case 90. Is formed.

Thus, the end face 10 ′ (FIG. 13) of the coaxial cable 1 held by the cable holding section 94 b (and the ring holding section 94 c) is pressed substantially perpendicularly to the conductive rubber member R together with the conductive ring 98. It is supposed to. The coaxial cable 1, the conductive ring 98, and the conductive rubber member R can be mounted in the case 90 in a state where the case 90 is divided into left and right parts (in the cross section in FIG. 15).

The first and second holding members
In the connection state shown in FIGS. 9 and 13, the holding portions 8 and 9 hold the end face 10 ′ (FIG. 13) of the coaxial cable 1 with the center conductive member 86 (conductive pin) sandwiching the conductive rubber member R in the thickness direction. 86a) and the external conductive member (disk-shaped portion) 85 are held in a pressed state. In this case, the center conductive member 86 and the outer conductive member 85 correspond to the center conductor 12 and the outer conductor 14 (conductive ring 98) on the end face 10 'of the coaxial cable 1, respectively.

<Operation and Effect> Next, the operation and effect of the present embodiment having the above-described configuration will be described.

According to the present embodiment, the first holding portion 8 and the second
By connecting the holding portion 9 to each other, the end face 10 ′ of the coaxial cable 1 is sandwiched by the conductive rubber member R in the thickness direction, and the center conductive member 86 (conductive pin 86 a) of the first holding portion 8 and the external conductive The member (disk-shaped portion) 85 can be pressed.

The connection is made with the disc-shaped portion 8 of the first holding portion 8.
5 is inserted into the connection hole 92 of the second holding unit 9. At this time, the pair of holding plates 84 of the first holding unit 8
Pinches the receiving portion 96 of the second holding portion 9 (while positioning), and inserts the latter engaging projection 9 into the former engaging hole 84a.
The connection and pressing state as described above is maintained by locking the 6a.

In this state, the center conductor 12 and the outer conductor 14 on the end face 10 ′ of the coaxial cable 1 are respectively connected to the center conductive member 86 by the conductive rubber member R.
And the external conductive member 85 (from the bottom plate portion 82)
It is electrically connected to the central conductor connection portion and the external conductor connection portion of the circuit board 3. In this case, the conductive ring 98
The electrical connection to the outer conductor 14 becomes more reliable.

Accordingly, the electrical connection can be reliably performed only by performing relatively simple processing on the end of the coaxial cable 1. The processing of the coaxial cable 1 in this case is performed by the first
Although it is more complicated than the third embodiment, it is simpler than the conventional one. Further, it is not necessary to provide many components corresponding to the center conductor 12 and the outer conductor 14 of the coaxial cable 1 unlike the conventional connector. Therefore, the processing of the coaxial cable 1 is simplified, and the connector 2D
The structure of the connector itself is relatively simple, and it is possible to provide a connector that is smaller and less costly than before.

Further, the end of the coaxial cable 1 extending substantially parallel to the substrate 3 is
The connector 2D can be connected vertically to the board 3. At this time, the height of the connector 2D and the coaxial cable 1 from the board 3 can be reduced by downsizing the coaxial connector 2D. In this case, the second holding unit 9
Inside, since the jacket 18 is removed from the curved portion of the coaxial cable 1, it is possible to reduce the height of the connector 2D at the time of connection by the thickness of the jacket 18 (FIGS. 13 and 14). reference).

<Modification> In the holding members 8 and 9 according to the present embodiment, the case where the conductive rubber member R is mounted in the second holding portion 9 has been described. It is also possible to configure so that R is attached. However, in a case where the first holding portion 8 is fixed to the circuit board 3 or the like by reflow soldering, the conductive rubber member R having relatively low heat resistance is provided not in the first holding portion 8 but in the second holding portion. 9 is preferably attached.

The structure of the holding members 8 and 9 is not limited to the above-described structure.
The center conductive member 86 is sandwiched between the conductive rubber members R in the thickness direction.
Any other structure may be used as long as it can be held in a pressed state against the external conductive member 85.

[Others] With respect to the electrical characteristics of the coaxial connector in the above embodiment, it has been confirmed by experiments that at least high-frequency characteristics equivalent to those of conventional products can be obtained.

Further, in the above embodiment, the case where the connection between the pair of coaxial cables 1A and 1B and the connection between one coaxial cable 1 and the circuit board 3 is described. By using a structure in which a plurality of 2B, 2C, or 2D are connected, connection may be made between a plurality of pairs of coaxial cables or between a plurality of coaxial cables and a circuit board.

[0085]

As described above, according to the present invention, electrical connection can be performed without changing the end of the coaxial cable, and without changing the end face of the coaxial cable. Further, it is not necessary to provide many parts corresponding to the center conductor and the outer conductor of each coaxial cable as in the conventional connector. For this reason, the processing of the coaxial cable is extremely simplified, and the structure of the connector itself is also simplified, so that it is possible to provide a much smaller and lower cost connector than before.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of a coaxial connector according to the present invention.

FIG. 2 is an exemplary perspective view showing a first holding portion of the coaxial connector shown in FIG. 1;

3A is a longitudinal sectional view showing a structure of a conductive rubber member used in the coaxial connector shown in FIG. 1 (without hatching), and FIG. 3B shows another structure of the conductive rubber member. FIG.

FIG. 4 is a longitudinal sectional view showing a second embodiment of the coaxial connector according to the present invention.

FIG. 5 is an enlarged longitudinal sectional view showing a spring connector as a center conductive member used in the coaxial connector shown in FIG. 4;

FIG. 6 is a longitudinal sectional view showing a third embodiment of the coaxial connector according to the present invention.

FIG. 7 is a plan view of a circuit board connected by the coaxial connector shown in FIG. 6;

FIG. 8 is a perspective view showing a fourth embodiment of the coaxial connector according to the present invention in a state before connection.

9 is a perspective view showing the coaxial connector shown in FIG. 8 in a connected state.

FIG. 10 is a view showing only a first holding portion, corresponding to the perspective view of the coaxial connector shown in FIG. 8;

FIG. 11 is a plan view of the first holding unit shown in FIG. 10;

FIG. 12 is a cross-sectional view of the first holding unit shown in FIG. 11,
(A) is a sectional view taken along line AA, and (b) is a sectional view taken along line BB.

FIG. 13 is a longitudinal sectional view of the coaxial connector in the state shown in FIG. 9;

FIG. 14 is a perspective view corresponding to the perspective view of the coaxial connector shown in FIG. 8, showing the internal components of the second holding portion;

FIG. 15 is a view showing only a case forming a second holding portion in the longitudinal section of the coaxial connector shown in FIG. 13;

FIG. 16 shows internal components of the second holding unit shown in FIG. 14;
The bottom view which shows only a coaxial cable and a conductive ring.

FIG. 17 is a partial longitudinal sectional view showing a structure of a general coaxial cable.

FIG. 18 is a side view showing a processed state of an end of a coaxial cable applied to a conventional coaxial connector.

FIG. 19 is a longitudinal sectional view showing an example of a conventional coaxial connector.

[Explanation of symbols]

 1, 1A, 1B Coaxial cable 10, 10 'End face 12 Center conductor 14 External conductor 16 Insulator 18 Jacket 2A Coaxial connector R Conductive rubber member 20 First holding part (holding member) 22 Second holding part (holding member) 2B Coaxial connector 3 Circuit board 32 Center conductor connection part 34 External conductor connection part 42 Spring connector (Center conductive member) 43 Cable side contact part 45 Board side contact part 47 Coil spring 44 External conductive member 50 First holding part (Holding member) 52 2nd holding part (holding member) 2C coaxial connector 60 holding member 72 center conductor connecting part 74 external conductor connecting part 2D coaxial connector 8 first holding part (holding member) 80 main body 84 holding plate 84a engaging hole 85 disc-shaped part ( External conductive member) 86 Central conductive member 88 Insulator 9 Second holding part (holding member) 90 Case 92 Connection hole 4 cavities 94a, 94b the cable holding portion 96 receiving portion 96a engaging protrusion 98 conductive ring

Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme Court II (Reference) // H01R 103: 00 H01R 17/04 501M Q 501F 501N (72) Inventor Kenichi Iwai 7-chome Takinogawa Kita-ku, Tokyo No. 5-11 Yokoo Co., Ltd. (72) Inventor Atsushi Sato 5-11-11 Takinogawa Kita-ku, Tokyo Yokoo Co., Ltd.

Claims (7)

[Claims] 1. A coaxial connector for connecting ends of a coaxial cable having at least a center conductor and an outer conductor, the sheet-like anisotropic conductive rubber member being conductive only in a thickness direction; A coaxial connector comprising: a holding member for holding the end faces of the cables in a thickness direction with the conductive rubber member interposed therebetween and holding the end faces in a pressed state in the axial direction. 2. A holding member for holding an end of one coaxial cable and a second holding member for holding an end of the other coaxial cable and inserted into the first holding portion. 2. The coaxial connector according to claim 1, further comprising two holding parts, wherein the conductive rubber member is attached to at least one of the first holding part and the second holding part. 3. 3. A coaxial connector for connecting an end portion of a coaxial cable having at least a center conductor and an outer conductor to a circuit board having a center conductor connection portion and an outer conductor connection portion. A sheet-like anisotropic conductive rubber member that can only conduct, and electrically conducts to the center conductor connection portion and the outer conductor connection portion of the circuit board, respectively, and corresponds to the center conductor and the outer conductor on the end face of the coaxial cable, respectively. A central conductive member and an external conductive member, and an end face of the coaxial cable, for holding the end surface of the coaxial cable in a pressing state against the central conductive member and the external conductive member by sandwiching the conductive rubber member in a thickness direction. A coaxial connector comprising a holding member. 4. A holding member, comprising: a first holding portion attached to the circuit board; and a second holding portion holding an end of the coaxial cable and connected to the first holding portion. The coaxial connector according to claim 3, wherein the conductive rubber member is attached to at least one of the first holding portion and the second holding portion. 5. The center conductive member, wherein: a cable-side contact portion that contacts the conductive rubber member; a board-side contact portion that contacts a center conductor connection portion of the circuit board; The coaxial connector according to claim 3, wherein the coaxial connector is a coil spring contact having a coil spring provided. 6. An end portion of a coaxial cable having at least a center conductor and an outer conductor is connected to a center conductor connection portion and an outer conductor connection portion disposed on the end face of the coaxial cable corresponding to the center conductor and the outer conductor, respectively. A coaxial connector for connecting to a circuit board having: a sheet-shaped anisotropic conductive rubber member that can be conducted only in the thickness direction; A coaxial connector comprising: a holding member for holding the circuit board in a pressed state against the center conductor connection portion and the external conductor connection portion of the circuit board. 7. The circuit according to claim 6, wherein the holding member is insertable into the circuit board while holding the end of the coaxial cable and the conductive rubber member.
The coaxial connector as described.