JP2001283997A - Coaxial connector and communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coaxial connector, and a communication equipment, which has a long service life for repetition of a plug-in operation, is small in size, and is highly reliable. SOLUTION: It consists of a grounding terminal 11, a 1st fixed terminal 12 and a 2nd fixed terminal 13, a 1st insulation case component 14 and a 2nd insulation case component 15, a movable contact point component 17 which is accommodated movably in the accommodation room 16 and makes contact or separates with the 1st fixed terminal 12, and a conductive spring 18. If a contact of a tip of a probe 30 of other party is carried out to a contact surface 11a of the grounding terminal 11, the 1st fixed terminal 12 and the movable contact point component 17 is severed from a contact, and a center contact 32 of the probe 30 is electrically connected with the 2nd fixed terminal 13, via the movable contact point component 17 and the conductive spring 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial connector and a communication device, and more particularly to a coaxial connector and a communication device in a mobile communication device such as a portable telephone, which has a function of switching a signal path.

[0002]

2. Description of the Related Art Conventionally, some portable telephones and the like use a surface mount type coaxial connector having a function of switching a signal path (for example, Japanese Patent Laid-Open No. 10-21).
996). An example of this type of conventional coaxial connector is shown in FIGS.

[0003] The coaxial connector 50 includes a coil spring 5.
The switch terminal 52 urged in the protruding direction by 1 is disposed in the contact receiving chamber 53 so as to be movable up and down, and the break contact 54 and the first common contact 55 are exposed above the contact receiving chamber 53, while the first contact 55 is located below. The two common contacts 56 are exposed, the switch terminal 52 is pushed down by connection with the center contact 61, and the connection of the common terminal 57 is switched from the break terminal 58 to the center contact 61 of the mating probe 60. The amount of depression of the center contact 61 is absorbed by the coil spring 51. Thus, the amount of movement of the switch terminal 52 is reduced, and the size and height of the insulating housing 59 are reduced.

[0004]

By the way, in the conventional coaxial connector 50, the second common contact 56 is constituted by a cantilevered elastic portion. For this reason, the plastic deformation of the second common contact 56 may occur while the attachment / detachment of the mating probe is repeated, and the spring property may be deteriorated. That is, when the other probe is connected, the second common contact 56
And a stable contact connection between the switch terminal 52 and the switch terminal 52 cannot be obtained. In addition, in order to ensure the durability of such a cantilevered elastic portion, it is necessary to increase the span of the cantilever portion to some extent. For this reason, the conventional coaxial connector 50 has a limit in miniaturization.

SUMMARY OF THE INVENTION An object of the present invention is to provide a small, highly reliable coaxial connector and a communication device having a long repetitive life of fitting.

[0006]

In order to achieve the above object, a coaxial connector according to the present invention comprises: (a) an insulating case member; and (b) movably housed in the insulating case member. A movable contact member that is in contact with and connected to a center contact of the side probe; (c) a first fixed terminal disposed in the insulating case member; and (d) the insulating member at a distance from the first fixed terminal. A second fixed terminal disposed in a case member; and (e) disposed between the first fixed terminal and the second fixed terminal in the insulating case member, and the movable contact member is connected to the second fixed terminal. A conductive spring member that is urged toward the first fixed terminal to contact the first fixed terminal and is electrically connected to the second fixed terminal; and (f) mounted outside the insulating case member. And the outer conductor of the mating probe (G) the center contact disengages the movable contact member from the first fixed terminal against the spring force of the conductive spring member when the counterpart probe is mounted. Characterized in that the

The conductive spring member and the movable contact member are housed in an insulating case member. As a result, the component arrangement is rational and compact, and a compact coaxial connector can be obtained. Further, by using, for example, a coil-shaped spring as the conductive spring member, the repetitive life of the fitting with the mating probe and the reliability of the long-term fitting are greatly improved.

Further, the contact surface of the external terminal with the mating probe can be positioned outside the surface of the insulating case member, or the first contact portion that contacts the center contact of the mating probe can be moved by the movable contact member. By protruding the external terminal from the mating probe contact surface of the external terminal by a dimension equal to or less than the distance, contact between the external terminal of the coaxial connector and the external conductor of the mating probe or the movable contact member of the coaxial connector and the center of the mating probe The contact with the contact is reliably performed.

The movable contact member has a first contact portion at one end for contacting the center contact of the mating probe, and the first contact portion is always located in a guide hole formed in the insulating case member. Is preferred. Thus, the center contact of the other probe always comes into contact with the first contact portion of the movable contact member in the guide hole.
Therefore, since the movable contact member and the center contact are supported by the guide hole, there is no concern that the axis of the movable contact member and the axis of the center contact are inclined, and the first contact portion and the center contact of the mating probe are reliably connected. Contact.

In addition, if a cylindrical probe fitting portion and a mortar-shaped probe guide portion are provided around the contact surface of the external terminal with the other probe, it is possible to simply push the other probe into the probe guide portion. By the guide function of the probe guiding section and the positioning action of the probe fitting section, the center contact of the mating probe can be easily and reliably connected to the first contact section of the movable contact member, and the connection operation is simple and reliable. Will be able to do it.

Further, the communication device according to the present invention has high reliability by including the coaxial connector having the above-described features.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a coaxial connector and a communication device according to the present invention will be described with reference to the accompanying drawings.

[First Embodiment, FIGS. 1-4] FIG. 1 is an exploded perspective view of one embodiment of a coaxial connector according to the present invention.
FIG. 2 is a perspective view of the external appearance, and FIG.
FIG. 4 shows a state where the probe is fitted. The coaxial connector (coaxial receptacle) 10 includes a ground terminal 11, a first fixed terminal 12 and a second fixed terminal 13,
The first insulating case member 14 and the second insulating case member 15 made of a resin material, and the first insulating case member 14 and the second insulating case member 15 are movably housed in a contact member housing chamber 16 formed by the first insulating case member 14 and the second insulating case member 15. The movable contact member 17 includes a movable contact member 17 that comes into contact with and separates from the first fixed terminal 12 and the second fixed terminal 13, and a conductive spring 18 that constantly biases the movable contact member 17 toward the first fixed terminal 12.

The ground terminal 11 is formed in a substantially cylindrical shape by pressing a metal plate. From the lower end side of the ground terminal 11, ground terminal legs 19, 19 electrically connected by soldering or the like to a ground pattern on a printed board (not shown) on which the present coaxial connector 10 is mounted are disposed radially outward by 180 degrees. It is pulled out at angular intervals of degrees. In addition, a contact surface 11a that contacts the outer conductor 31 of the mating probe 30 connected to the coaxial connector 10 is formed on the upper end side of the ground terminal 11.
A circular hole 11b is formed at the center of a. The outer conductor 31 of the mating probe 30 shown in FIGS. 3 and 4 is in electrical contact with the contact surface 11 a of the ground terminal 11.
Thereby, the outer conductor 31 is connected to the ground pattern of the printed board through the ground terminal 11.

The first insulating case member 14 and the second insulating case member 15 are fitted in the earth terminal 11 from the lower end opening side of the earth terminal 11 in this order. The contact member accommodating chamber 16 formed by the first insulating case member 14 and the second insulating case member 15 is formed so as to be coaxial with the ground terminal 11 and positioned at the axis of the ground terminal 11. The first insulating case member 14 has a circular projection 14a on the upper end side to be fitted into the hole 11b of the ground terminal 11, and the protruding end surface 14as of the ground terminal 11 is larger than the contact surface 11a of the ground terminal 11. It is located inside. Further, a guide hole 14b for guiding the pin-shaped first contact portion 17a of the movable contact member 17 so as to be movable in the axial direction is formed in the axis of the protrusion 14a of the first insulating case member 14. .

The first fixed terminal 12 includes a ring portion 12a having a contact portion 12ac with which the flange portion 17c of the movable contact member 17 contacts, and the ring portion 12a is connected to the movable contact accommodating chamber 16
And a pull-out terminal portion 12b which is drawn out. The ring portion 12a and the lead terminal portion 12b are integrally formed by punching a metal plate. The ring portion 12a has three contact portions 12ac bent from the inner peripheral edge toward the inside of the contact member housing chamber 16.
The ring portion 12a is arranged on a ceiling portion on the side of the first insulating case member 14 constituting a part of the contact member housing chamber 16. The lead terminal portion 12b is fitted into a groove 15b formed on the outer peripheral portion of the circular concave portion 15a of the second insulating case member 15, and is drawn out of the circular concave portion 15a. Then, a protrusion 14d formed on the first insulating case member 14 is formed.
Is fitted into a groove 15b formed in the second insulating case member 15, and the lead terminal 12b is fixed by being sandwiched between the protrusion 14d and the groove 15b.

The second fixed terminal 13 has a disk portion 13a to which the lower end of the conductive spring 18 is electrically connected.
And a lead terminal portion 13b for pulling out the disk portion 13a to the outside of the contact accommodating chamber 16. The disk portion 13a and the lead terminal portion 13b are also integrally formed by punching a metal plate. The disk portion 13a is fitted in a circular recess 15a on the side of the second insulating case member 15 constituting a part of the contact member housing chamber 16. The lead terminal portion 13b is drawn radially outward from the disk portion 13a, fitted into a groove 15b formed on the outer peripheral portion of the circular concave portion 15a, and drawn out of the circular concave portion 15a. Then, the protrusion 14d formed on the first insulating case member 14 is fitted into the groove 15b formed on the second insulating case member 15, and the protrusion 14d and the groove 1 are fitted.
5b to fix the lead-out terminal portion 13b.

The movable contact member 17 is made of a metal material, and has a pin-shaped first contact portion 17a inserted into the guide hole 14b of the first insulating case member 14, and a second contact portion 17b fitted inside the upper end of the spring 18. And a flange portion 17c.

Here, the first contact portion 17a is connected to the movable distance of the movable contact member 17 (in the case of the first embodiment, as shown in FIG. 3, from the lower end of the second contact portion 17b to the second fixed terminal 13). Distance to the top of the ground)
It protrudes from one mating probe contact surface 11a. It is preferable that the tip of the first contact portion 17a be hemispherical (or conical) so that a higher contact pressure can be obtained. With these structures and the structure in which the mating probe contact surface 11a of the ground terminal 11 is located outside the protruding end surface 14as of the first insulating case member 14, the tip surface of the mating probe 30 and the mating side of the coaxial connector 10 are connected. The probe contact surface 11a can be brought into surface contact. As a result, contact between the ground terminal 11 of the coaxial connector 10 and the outer conductor 31 of the mating probe 30 or
The contact between the movable contact member 17 of the coaxial connector 10 and the center contact 32 of the mating probe 30 can be reliably performed.

The spring 18 has a coil shape and is contracted between the flange portion 17c of the movable contact member 17 and the disk portion 13a of the second fixed terminal 13 in the contact member accommodating chamber 16. When the member 17 is always in contact with the first insulating case member 14,
Of the projection 14a.

Next, the operation of the coaxial connector 10 will be described with reference to FIG.
This will be described with reference to FIG. As shown in FIG. 3, when the counterpart probe 30 is not mounted, the movable contact member 17 is urged by the spring force of the spring 18 so that the flange portion 17c of the movable contact member 17 is connected to the ring of the first fixed terminal 12. It is press-contacted and electrically connected to the contact portion 12ac of the portion 12a. That is, a signal path of the first fixed terminal 12-the movable contact member 17-the conductive spring 18-the second fixed terminal 13 is formed.

On the other hand, as shown in FIG. 4, when the mating probe 30 is mounted, the tip of the center contact 32 of the mating probe 30 comes into contact with the tip of the first contact portion 17a of the movable contact member 17, and The first contact portion 17a is guided by the guide hole 14b, and the movable contact member 17 moves in the movable contact member housing chamber 16 toward the second fixed terminal 13. Thereby, the contact between the contact portion 12ac of the first fixed terminal 12 and the flange portion 17c is cut off, and the center contact 32 and the movable contact member 17 are electrically connected. That is, the center contact 32 of the counterpart probe 30-the movable contact member 17-the conductive spring 18-the second fixed terminal 13
Is formed. Further, the ground terminal 11 is electrically connected to the outer conductor 31 of the mating probe 30. In the mating probe 30, the outer periphery of the center contact 32 is covered with the insulating material 33 and further the outer conductor 31 is covered.

When the mating probe 30 is detached from the coaxial connector 10, the movable contact member 17 is electrically connected to the first fixed terminal 12 again by the spring force of the spring 18, while the center contact 32 and the movable contact member 17 are separated. Electrical connection is broken.

The coaxial connector 10 having the above configuration is
Since the conductive spring 18 is also used as a signal path, the movable contact member accommodating chamber 16 having a substantially cylindrical shape having an inner diameter into which the outer diameter of the conductive spring 18 can be inserted is provided.
What is necessary is just to form with the 1st insulating member 14 and the 2nd insulating member 15. That is, the coaxial connector 10 does not need to provide the movable contact member accommodating chamber 16 with the cantilever-shaped elastic member of the conventional coaxial connector 50, and the arrangement of the internal components can be made rational and compact.

In the first embodiment, a coil-shaped spring 18 is used as the conductive spring member, and the movable contact member 17 is connected to the first fixed terminal 1 by the spring force of the spring 18.
2 so that the life of repeated fitting with the mating probe 30 and the reliability of long-term fitting can be reduced as compared with the conventional coaxial connector 50 using a cantilevered elastic member. The performance is also greatly improved.

[Second Embodiment, FIGS. 5 and 6] FIGS. 5 and 6 show another embodiment of the coaxial connector according to the present invention. The coaxial connector 10a is different from the coaxial connector 10 according to the first embodiment described with reference to FIGS. 1 to 4 in that the distal end of the first contact portion 17a of the movable contact member 17 is always in contact with the first insulating case member 14. It is located in the guide hole 14b. When the mating probe 30 is mounted on the coaxial connector 10a, the tip of the center contact 32 of the mating probe 30 is inserted into the guide hole 14b and pressed against the first contact portion 17a of the movable contact member 17. A tapered portion 14 bt is formed at the distal end opening of the guide hole 14 b to facilitate insertion of the distal end of the center contact 32 of the mating probe 30.

In FIGS. 5 and 6, those corresponding to FIGS. 3 and 4 are indicated by the corresponding reference numerals,
Duplicate description is omitted. In the case of the second embodiment,
The center contact 32 of the mating probe 30 is
3 is projected from the end face.

The coaxial connector 10 having such a configuration
In a, in addition to the effect provided by the coaxial connector 10 of the first embodiment, the center contact 32 of the mating probe 30 always contacts the tip of the first contact portion 17a of the movable contact member 17 in the guide hole 14b. The movable contact member 17 and the center contact 32 are supported by the guide hole 14b. Therefore, a change in the contact state of the mating probe 30 with the center contact 32 due to the inclination of the axis of the first contact portion 17a caused by the gap between the first contact portion 17a and the guide hole 14b is small, and the first contact portion 17a And the center contact 32 can be obtained stably.

[Third Embodiment, FIG. 7] FIG. 7 shows another embodiment of the coaxial connector according to the present invention. The coaxial connector 10b guides the distal end of the mating probe 30 to a region outside the mating probe contact surface 11a of the ground terminal 11 in the coaxial connector 10 of the first embodiment described with reference to FIGS. To form a mortar-shaped probe guiding portion 11g for
A probe fitting portion 11h for fitting the mating probe 30 between the g and the mating probe contact surface 11a is formed. As can be seen from FIG. 7, the probe fitting portion 11h has a depth greater than the amount of protrusion of the tip of the first contact portion 17a of the movable contact member 17 protruding from the mating probe contact surface 11a. . In FIG. 7,
Those corresponding to FIGS. 3 and 4 are denoted by the corresponding reference numerals, and redundant description will be omitted.

The coaxial connector 10 having such a configuration
In b, when the counterpart probe 30 is attached, the center of the tip of the probe 30 is moved to the probe guiding portion 11g by the guide function of the mortar-shaped probe guiding portion 11g.
Straightened to match the center of the Next, the tip of the probe 30 is inserted into the cylindrical probe fitting portion 11h,
By the fitting, the deviation of the inclination between the central axis of the probe 30 and the central axis of the probe fitting portion 11h (in other words, the central axis of the coaxial connector 10b) is corrected. Then, by bringing the tip of the probe 30 into surface contact with the mating probe contact surface 11a of the coaxial connector 10b,
It is possible to more reliably correct the deviation of the inclination between the central axis of the probe 30 and the central axis of the coaxial connector 10b.

As described above, just by pushing the mating probe 30 into the probe guiding portion 11g of the coaxial connector 10b, the guide function of the probe guiding portion 11g and the positioning action of the probe fitting portion 11h make the coaxial connector 1g.
The center contact 32 of the mating probe 30 can be easily and reliably connected to the first contact portion 17a of the movable contact member 17 of the Ob.

[Fourth Embodiment, FIGS. 8 and 9] FIG. 8 shows still another embodiment of the coaxial connector according to the present invention.
Shown in The coaxial connector 10c is different from the coaxial connector 10 of the first embodiment described with reference to FIGS. 1 to 4 in that a probe having the same function as that described in FIG. Guiding part 11g
And a probe fitting portion 11h. Further, the probe guiding portion 11g and the probe fitting portion 11h
May be formed on the mating probe 30 as shown in FIG. In FIGS. 8 and 9, those corresponding to FIGS. 3 and 4 are denoted by the corresponding reference numerals, and redundant description will be omitted.

Even in the coaxial connector having such a configuration, the same effect as the coaxial connector 10b of the third embodiment can be obtained by the action of the mortar-shaped probe guiding portion 11g and the probe fitting portion 11h. .

[Fifth Embodiment, FIG. 10] In a fifth embodiment, an example in which the communication device according to the present invention is applied to a mobile phone will be described. FIG. 10 is an electric circuit block diagram of the high-frequency circuit unit of the mobile phone 120. In FIG. 10, 1
22 is an antenna element, 123 is a duplexer, 125 is a changeover switch, 131 is a transmission-side isolator, 132 is a transmission-side amplifier, 133 is a transmission-side interstage bandpass filter, 134 is a transmission-side mixer, 135 is a reception-side amplifier,
36 is a bandpass filter for the inter-stage on the receiving side, 137 is a mixer on the receiving side, 138 is a voltage controlled oscillator (VCO), 139
Is a local bandpass filter.

Here, as the changeover switch 125, the coaxial connectors 10, 10a to 1 of the first to fourth embodiments are used.
0c can be used. Thus, for example, when the set maker checks the electrical characteristics of the high-frequency circuit section in the manufacturing process of the mobile phone 120, the measuring probe (the other-end probe) 30 connected to the measuring instrument is fitted to the coaxial connector 10 or the like. Then, the signal path from the high frequency circuit to the antenna element 122 can be switched to the signal path from the high frequency circuit to the measuring instrument. When the measurement probe 30 is detached from the coaxial connector 10, the signal returns to the signal path from the high-frequency circuit to the antenna element 122. By mounting the coaxial connector 10, a highly reliable mobile phone 120 can be realized.

[Other Embodiments] The present invention is not limited to the above embodiment, but can be variously modified within the scope of the gist. For example, a probe guiding section and a probe fitting section having the same functions as those described in the third embodiment to the fourth embodiment may be applied to the coaxial connector of the second embodiment.

[0037]

As is apparent from the above description, according to the present invention, the connection is switched by the conductive spring member and the movable contact member housed in the insulating case member. Therefore, the component arrangement is rational and compact, and a compact coaxial connector can be obtained. In addition, since the movable contact member is configured to be separated from and connected to the first fixed terminal by using the conductive spring member, the life of repeated fitting with the mating probe and the reliability of long-term fitting are greatly improved. improves.

Further, by making the center contact of the counterpart probe contact the first contact portion of the movable contact member in the guide hole, the first contact generated by the gap between the first contact portion and the guide hole is formed. The change in the state of contact with the center contact of the mating probe due to the inclination of the axis of the part is reduced, and stable contact between the movable contact member and the center contact of the mating probe can be obtained, due to the influence of dust, dust, etc. A highly durable coaxial connector free from poor contact can be obtained.

Further, by providing the mortar-shaped probe guiding portion and the probe fitting portion, the guide function of the probe guiding portion and the positioning action of the probe fitting portion can be achieved simply by pushing the partner probe into the probe guiding portion. The center contact of the mating probe can be easily and reliably connected to the movable contact member, and the connection operation can be performed simply and reliably.

Furthermore, by using the coaxial connector according to the present invention, a small and highly reliable communication device can be obtained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a first embodiment of a coaxial connector according to the present invention.

FIG. 2 is a perspective view showing the appearance of the first embodiment of the coaxial connector according to the present invention.

FIG. 3 is a longitudinal sectional view of the first embodiment of the coaxial connector according to the present invention.

FIG. 4 is a longitudinal sectional view showing a state in which a mating probe is connected in the coaxial connector of FIG. 3;

FIG. 5 is a longitudinal sectional view of a second embodiment of the coaxial connector according to the present invention.

FIG. 6 is a longitudinal sectional view showing a state where a mating probe is connected in the coaxial connector of FIG. 5;

FIG. 7 is a longitudinal sectional view of a third embodiment of the coaxial connector according to the present invention.

FIG. 8 is a longitudinal sectional view of a fourth embodiment of the coaxial connector according to the present invention.

FIG. 9 is a longitudinal sectional view of a modified example of the coaxial connector of FIG. 8;

FIG. 10 is an electric circuit block diagram of one embodiment of a communication device according to the present invention.

FIG. 11 is a longitudinal sectional view of an example of a conventional coaxial connector.

FIG. 12 is a longitudinal sectional view showing a state in which a mating probe is connected in the conventional coaxial connector of FIG. 11;

[Explanation of symbols]

 10, 10a-10c coaxial connector 11 earth terminal (external terminal) 11a mating probe contact surface 11b hole 11g probe guide part 11h probe fitting part 12 first fixed terminal 13 second fixed terminal 14 ... First insulating case member 14b ... Guide hole 14as ... Protruding end face 15 ... Second insulating case member 16 ... Contact member storage chamber 17 ... Movable contact member 17a ... First contact portion 17b ... Second contact portion 18 ... Spring 120 ... Portable Telephone 125 ... changeover switch

Claims (6)

[Claims] An insulating case member, a movable contact member movably accommodated in the insulating case member and connected to a center contact of a mating probe, and a movable contact member disposed in the insulating case member. A first fixed terminal, a second fixed terminal disposed in the insulating case member at a distance from the first fixed terminal, and the first fixed terminal and the second fixed terminal in the insulating case member. And a conductive spring disposed between the second fixed terminal and the movable contact member for urging the movable contact member toward the first fixed terminal so as to contact the first fixed terminal and electrically connected to the second fixed terminal. And an external terminal mounted outside the insulating case member and electrically connected to an outer conductor of the mating probe, wherein the center contact is the conductive spring member when the mating probe is mounted. Resists spring force Wherein said movable contact member is disengaged from said first fixed terminal. 2. The coaxial connector according to claim 1, wherein a contact surface of the external terminal with the counterpart probe is located outside a surface of the insulating case member. 3. The movable contact member has at one end a first contact portion that contacts a center contact of the counterpart probe,
3. The coaxial connector according to claim 1, wherein the first contact portion protrudes from a contact surface of the external terminal with a counterpart probe by a dimension smaller than a movable distance of the movable contact member. 4. The movable contact member has a first contact portion at one end for contacting a center contact of a mating probe, and the first contact portion is always located in a guide hole formed in the insulating case member. The coaxial connector according to claim 1 or 2, wherein 5. The method according to claim 1, further comprising a cylindrical probe fitting portion and a mortar-shaped probe guiding portion around a contact surface of the external terminal with a counterpart probe. The coaxial connector according to any one of the above. 6. A communication device comprising the coaxial connector according to claim 1. Description: