JP2875740B2 - Board connection structure of rotary joint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary joint board connection structure for transmitting a high-frequency signal bidirectionally between a board on which high-frequency circuit components are mounted and a rotating body such as an antenna. is there.

[0002]

2. Description of the Related Art FIG. 7 is a cross-sectional view showing a conventional rotary joint described in, for example, Japanese Utility Model Laid-Open No. 60-13689. In FIG. The rotating inner conductor 4 is coaxially integrated with the bottom of the outer conductor 1 in a state of being electrically insulated by an insulator 3.
A cylindrical fixed-side outer conductor having a bottom for rotatably housing
Is a contact plate for the inner conductor which is coaxially integrated with the bottom of the fixed-side outer conductor 4 while being electrically insulated via the insulator 7. Reference numeral 8 denotes an internal conductor brush slidably disposed in the rotation-side internal conductor 2 in the axial direction. Reference numeral 9 denotes a spring that urges the internal conductor brush 8 toward the internal conductor contact plate 6. Here, a biasing force of the spring 9 causes the internal conductor contact plate 6 to contact the internal conductor brush 8, thereby constituting a slip ring mechanism for obtaining conduction between the rotation side and the fixed side of the internal conductor portion. Reference numeral 10 denotes an external conductor contact plate slidably disposed in the fixed external conductor 4 in the axial direction. Reference numeral 11 denotes a spring for urging the external conductor contact plate 10 in the direction of the rotary external conductor 1. Here, a contact ring 10 for the outer conductor is brought into contact with the outer conductor 1 on the rotating side by the urging force of the spring 11 to constitute a slip ring mechanism for obtaining conduction between the rotating side and the fixed side of the outer conductor. Reference numeral 12 denotes a fixed-side coaxial connector serving as a coaxial connector for connecting a substrate. The fixed-side coaxial connector 12 is electrically connected to the internal terminal 12a electrically connected to the internal conductor contact plate 6 and to the fixed external conductor 4. And an external terminal 12b connected thereto.
Reference numeral 13 denotes a rotary coaxial connector. The rotary coaxial connector 13 includes an internal terminal 13a electrically connected to the rotary internal conductor 2 and an external terminal 13b electrically connected to the rotary external conductor 1. Have been. 14 is a bearing retainer.

Next, the operation of the conventional rotary joint will be described. When the rotating outer conductor 1 rotates while being supported by the fixed outer conductor 4 via the bearing 5, the rotating inner conductor 2 integrated with the rotating outer conductor 1 also rotates. At this time, the inner conductor brush 8 is in contact with the inner conductor contact plate 6 by the urging force of the spring 9, and the outer conductor contact plate 10 is in contact with the rotating outer conductor 1 by the urging force of the spring 11. Therefore, the rotating side coaxial connector 1
The third external terminal 13b is connected to the external terminal 12b of the fixed-side coaxial connector 12 via the rotation-side external conductor 1, the external-conductor contact plate 10, and the fixed-side external conductor 4. Similarly,
The internal terminal 13a of the rotary coaxial connector 13 is connected to the internal terminal 12a of the fixed coaxial connector 12 via the rotary internal conductor 2, the internal conductor brush 8, and the internal conductor contact plate 6, thereby forming a coaxial rotary joint. doing.

[0004] Next, the connection between the rotary joint thus configured and the board on which the high-frequency circuit components are mounted will be described with reference to FIG. The rotary joint is fastened and fixed to a fixing plate 15 by a mounting screw 16.
A connector 18 connected to a rotating body, for example, an antenna (not shown) via a cable 17 is fitted to the rotating side coaxial connector 13. The fixed side coaxial connector 12 has a connector 2 connected via a cable 19 to a substrate 20 on which a high-frequency circuit component (not shown) is mounted.
1 is fitted. Then, the high-frequency signal received by the antenna is guided to the board 20 via the connector 18, the rotary joint and the connector 21. The high-frequency signal generated by the high-frequency circuit section of the board 20 is
It is led to the antenna via the rotary joint and the connector 18.

[0005]

Since the conventional rotary joint is constructed as described above, a cable 19 with a connector 21 is required to connect the rotary joint to the board 20. Therefore, the number of components increases, the cost increases, electric loss is caused by the connector 21 and the cable 19, and the fitting state between the fixed-side coaxial connector 12 and the connector 21 is loosened by vibration. there were. In addition, a mounting space is required in the axial direction of the rotary joint by an amount corresponding to the connection of the connector 21, and a wiring space for the cable 19 is required.

The present invention has been made to solve the above-mentioned problems, and is inexpensive, has small electric loss,
An object of the present invention is to obtain a rotary joint board connection structure that is excellent in vibration resistance and saves installation space.

[0007]

According to a first aspect of the present invention, there is provided a board connection structure for a rotary joint, comprising an extension portion extending in the axial direction to an external terminal of a coaxial connector for connecting a board of the rotary joint. A through hole formed in the board to allow the extension of the internal terminal and the extension of the external terminal of the coaxial connector for board connection to pass therethrough, respectively. The extension of the internal terminal and the external terminal of the coaxial connector for board connection is soldered to the board in a state where the rotary joint is inserted into the board joint, so that the rotary joint and the board are electrically connected.

[0008] A rotary joint board connecting structure according to a second aspect of the present invention includes a thick portion provided on an external terminal of a coaxial connector for connecting a board of the rotary joint, and a board connecting hole formed in the board. And a through hole for inserting the internal terminal of the coaxial connector for board connection. With the internal terminal of the coaxial connector for board connection inserted through the through hole, the internal terminal of the coaxial connector for board connection is soldered to the board, and The thick portion of the external terminal of the connection coaxial connector is screwed to the board to electrically connect the rotary joint to the board.

In a third aspect of the present invention, there is provided a rotary joint board connecting structure, comprising: an external terminal of a coaxial connector for connecting a board of the rotary joint; A through-hole is provided for inserting the extension of the internal terminal and the extension of the external terminal of the coaxial connector for board connection, and the spring electrode fitted to each of the extension of the internal terminal and the extension of the external terminal of the coaxial connector for board connection. A connection joint having the internal terminal of the coaxial connector for board connection and the extension of the external terminal inserted into the through-hole, the internal electrode of the coaxial connector for board connection and the spring electrode from the back side of the board and A connection joint is attached so as to be fitted to the extension of the external terminal, so that the rotary joint and the substrate are electrically connected.

[0010]

In the first aspect of the present invention, the extension of the internal terminal and the external terminal of the coaxial connector for board connection is soldered to the board in a state where the through-hole is inserted, and the rotary joint and the board are electrically connected. And are mechanically connected. Therefore, the rotary joint and the board are directly and firmly connected, eliminating the need for a cable with a connector for connecting the rotary joint and the board, reducing the number of parts in the connection section and suppressing electrical loss in the connection section. And loosening of the connection portion due to vibration is prevented. Furthermore, the mounting space for the connection portion is reduced.

[0011] In a second aspect of the present invention,
The internal terminals of the coaxial connector for connecting the board are soldered to the board in a state where the through-holes are inserted through the through-holes, and the thick portions of the external terminals are screwed to the board. Therefore, the second invention operates in the same manner as the first invention.

In a third aspect of the present invention,
With the extension of the internal terminal and the extension of the external terminal of the coaxial connector for board connection inserted into the through hole, the spring electrode is fitted to the extension of the internal terminal and the extension of the external terminal of the coaxial connector for connection from the back side of the board. Connection joints are installed. Therefore, the rotary joint and the substrate can be easily assembled and disassembled. There is also an effect similar to that of the first invention.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. Embodiment 1 FIG. FIG. 1 is a cross-sectional view showing a board connection structure of a rotary joint according to a first embodiment of the present invention. FIG. 2 shows an engagement state between the rotary joint and the board in the board connection structure of the rotary joint according to the first embodiment of the present invention. FIG. 9 is a perspective view as viewed from the back side, in which the same or corresponding parts as those of the conventional rotary joint shown in FIGS. 7 and 8 are denoted by the same reference numerals, and description thereof will be omitted.

In the drawing, reference numeral 30 denotes a fixed side coaxial connector as a coaxial connector for connecting a substrate of a rotary joint. The fixed side coaxial connector 30 includes an internal terminal 30a electrically connected to the internal conductor contact plate 6, and An external terminal 30b electrically connected to the fixed-side external conductor 4 and provided coaxially so as to surround the internal terminal 30a; and an arc-shaped arc-shaped member extending in the axial direction toward the distal end of the external terminal 30b. And an extension 30c. Reference numeral 31 denotes a board on which high-frequency circuit components are mounted. The board 31 has an internal terminal 30a and an external terminal 30 of the fixed-side coaxial connector 30.
circular through hole 33 through which the extension 30b of FIG.
An arc-shaped through hole 34 is formed. 3
2 is solder, 35 is a through hole 33 on the back side of the substrate 30
The land 35 is connected to an electrode pattern (not shown) formed on the front surface side of the substrate 31 through the through hole 33. Reference numeral 36 denotes a land formed around the through hole 34 on the rear surface of the substrate 31. The land 36 is connected to an electrode pattern (not shown) formed on the front surface of the substrate 31 via the through hole 34. ing.

Next, the connection between the rotary joint and the substrate according to the first embodiment will be described. The rotary joint is fastened and fixed to a fixing plate 15 by a mounting screw 16. Then, the substrate 31 is arranged from the back side of the rotary joint so that the extension 30c of the internal terminal 30a and the external terminal 30b is inserted into the through holes 33 and 34. At this time, the internal terminal 30a of the fixed side coaxial connector 30
As shown in FIG. 2, the extension 30c of the external terminal 30b has a distal end projecting from the through holes 33 and 34. Then, the internal terminal 30a and the extension 30c protruding from the through holes 33 and 34 are
1 are soldered to the lands 35 and 36 from the back side. Therefore, the internal terminals 13a of the rotary side coaxial connector 13 include the rotary side internal conductor 2, the internal conductor brush 8, the internal conductor contact plate 6, the internal terminal 30a of the fixed side coaxial connector 30, the solder 3
2, substrate 3 via land 35 and through hole 33
1 high-frequency circuit unit. The external terminals 13b of the rotary coaxial connector 13 include a rotary external conductor 1, an external conductor contact plate 10, a fixed external conductor 4, an external terminal 30b of the fixed coaxial connector 30, an extension 30c, and a solder 3.
2, substrate 3 via land 36 and through hole 34
The high-frequency signal is transmitted bidirectionally between the antenna and the substrate 31 via a rotary joint.

As described above, according to the first embodiment, the external terminal 30b of the fixed side coaxial connector 30 is provided with the extending portion 30c extending in the axial direction, and the substrate 31 is provided with the internal terminal 30a of the fixed side coaxial connector 30. And through-holes 33 and 34 through which the extension 30c is inserted, respectively, and the internal terminals 3a and 3b of the fixed-side coaxial connector 30 are inserted through the through-holes 33 and 34, respectively.
0a and the extension 30c are soldered to the lands 35, 36. Therefore, the cable 19 with the connector 21
It is not necessary to use, the effect that the number of parts is reduced, cost is reduced, and the electric loss can be suppressed. Further, the fixed coaxial connector 30 and the board 31 are firmly connected by soldering, so that the connection portion is not loosened due to vibration, and an excellent vibration resistance is obtained. Furthermore, the fixed side coaxial connector 3
0 and the substrate 31 are directly soldered, so that the axial mounting space of the rotary joint can be reduced, so that the wiring space for the cable is not required, and the effect of reducing the size of the entire device can be obtained.

Embodiment 2 FIG. In the first embodiment, the external terminal 30b of the fixed-side coaxial connector 30 is connected to the arc-shaped extending portion 30c.
Are provided, and an arc-shaped through-hole 34 is formed in the substrate 31 and the extension 30c is inserted into the through-hole 34 and soldered. The terminal 30b is provided with a plurality of rod-shaped extending portions extending in the axial direction, and a plurality of through holes are formed in the substrate 31 corresponding to the plurality of rod-shaped extending portions. Are inserted into a plurality of through holes and soldered, and the same effect is obtained.

Embodiment 3 FIG. FIG. 3 is a cross-sectional view showing a rotary joint board connection structure according to a third embodiment of the present invention. FIG. 4 shows an engagement state between the rotary joint and the board in the rotary joint board connection structure according to the third embodiment of the present invention. It is a perspective view seen from the back side. In the figure, reference numeral 40 denotes a fixed side coaxial connector as a coaxial connector for connecting a board of a rotary joint.
Reference numeral 0 denotes an internal terminal 40a electrically connected to the internal conductor contact plate 6, and an external terminal 40b electrically connected to the fixed-side external conductor 4 and provided coaxially to surround the internal terminal 40a. And an arc-shaped thick portion 40c provided on the external terminal 40b. Reference numeral 41 denotes a board on which high-frequency circuit components are mounted. The board 41 has a circular through hole 42 through which the internal terminal 40a of the fixed side coaxial connector 40 is inserted. 43 is the substrate 4
1 is a through hole. Reference numeral 44 denotes a land formed around the through hole 42 on the back surface of the substrate 41. The land 44 is connected to an electrode pattern (not shown) formed on the front surface of the substrate 41 via the through hole 42. ing. Reference numeral 45 denotes a land formed in an arc around the through hole 43 on the back surface of the substrate 41. The land 45 is formed on an electrode pattern (not shown) formed on the front surface of the substrate 41 through the through hole 43. It is connected. Reference numeral 46 denotes a mounting screw for fastening the substrate 41 to the thick portion 40c of the external terminal 40b of the rotary joint.

Next, the connection between the rotary joint and the substrate according to the third embodiment will be described. The rotary joint is fastened and fixed to a fixing plate 15 by a mounting screw 16. Then, the substrate 41 is inserted from the back side of the rotary joint so that the internal terminals 40a pass through the through holes 42.
Place. Then, as shown in FIG. 4, the mounting screw 46 is fastened to the thick portion 40c of the external terminal 40b from the back side of the substrate 41. Further, the internal terminals 40 a protruding from the through holes 42 are soldered to the lands 44 from the back side of the substrate 41. Therefore, the internal terminal 13a of the rotary side coaxial connector 13 includes the rotary side internal conductor 2, the internal conductor brush 8,
Contact plate 6 for internal conductor, internal terminal 40a of fixed side coaxial connector 40, solder 32, land 44 and through hole 4
2 is connected to the high-frequency circuit section of the substrate 41. The external terminal 13b of the rotary side coaxial connector 13 includes the rotary side external conductor 1, the external conductor contact plate 10, the fixed side external conductor 4, the external terminal 40b (thick portion 40c) of the fixed side coaxial connector 40, and a mounting screw. 46, a land 45 and a through-hole 43 connected to the high-frequency circuit portion of the substrate 41,
High frequency signals are transmitted bidirectionally between the antenna and the substrate 41 via a rotary joint.

As described above, according to the third embodiment, the thick portion 40c is provided on the external terminal 40b of the fixed coaxial connector 40, and the internal terminal 4 of the fixed coaxial connector 40 is provided on the substrate 41.
In the state where the internal terminal 40a of the fixed-side coaxial connector 40 is inserted through the through-hole 42, the internal terminal 40a is soldered to the land 44, and the external terminal 40b
The substrate 41 is fastened and fixed to the thick portion 40c. Therefore, similarly to the first embodiment, it is not necessary to use the cable 19 with the connector 21, so that the number of parts can be reduced, the cost can be reduced, and the electric loss can be suppressed. . Moreover, the fixed side coaxial connector 40 and the board 31 are firmly connected by soldering, so that the connection portion is not loosened due to vibration, and an excellent vibration resistance is obtained. Further, since the fixed side coaxial connector 40 and the board 31 are directly soldered, an axial mounting space of the rotary joint can be reduced, so that a wiring space for the cable is not required, and an effect that the size can be reduced can be obtained. .

Since the ground line needs to have a lower electric resistance than the signal line, in the first embodiment, an arc-shaped extending portion 30c is provided on the external terminal 30b of the rotary joint so that the substrate 31 The contact area between the ground line and the external terminal 30b is increased. Therefore, the soldering area increases, and the work of attaching and detaching the board 31 becomes difficult. On the other hand, Example 3
Then, the thick portion 4 is attached to the external terminal 40b of the rotary joint.
0c is provided and the board 41 is fastened and fixed by the mounting screw 46, so that the effect of simplifying the work of attaching and detaching the board 41 is obtained.

Embodiment 4 FIG. In the third embodiment, the lands 45 are provided on the back surface side of the substrate 41. In the fourth embodiment, lands are formed on the front surface of the substrate 41 at positions opposed to the thick portions 40c of the external terminals 40b. , Mounting screw 4
The external terminals 40c and the lands are brought into direct contact with each other by the fastening force of No. 6 to be electrically connected, and the same effect is exerted.

Embodiment 5 FIG. FIG. 5 is a sectional view showing a main part of a substrate connection structure of a rotary joint according to a fifth embodiment of the present invention. FIG. 6 is a sectional view showing a relation between the rotary joint and the substrate in the substrate connection structure of the rotary joint according to the fifth embodiment of the present invention. FIG. 5 is a sectional view of a main part showing a mating state. In the figure, reference numeral 50 denotes a fixed-side coaxial connector as a coaxial connector for connecting a board of a rotary joint.
Reference numeral 0 denotes an internal terminal 50a electrically connected to the internal conductor contact plate 6, and an external terminal 50b electrically connected to the fixed-side external conductor 4 and provided coaxially to surround the internal terminal 50a. And an extension 50c extending in the axial direction of the external terminal 50b. Reference numeral 51 denotes a board on which high-frequency circuit components are mounted. Through holes 52 and 53 through which the internal terminal 50a of the fixed-side coaxial connector 50 and the extension 50c of the external terminal 50b are inserted are formed in the board 51. Have been. 54 is a substrate 51
The land 54 is connected to an electrode pattern 56 formed on the front surface side of the substrate 51 via the through hole 52. 55 is a through hole 53 on the back side of the substrate 51
The land 55 is connected to an electrode pattern 57 formed on the front surface of the substrate 51 via a through hole 53.

Reference numeral 60 denotes a connection joint.
Is a housing 63 provided with holes 61 and 62, and holes 61 and 62
And spring electrodes 64 respectively housed therein. The spring electrode 64 is connected to the first and second bent portions 6.
4a, 64b are folded back into a U-shape so as to face each other,
A third bent portion 64c is formed at one end thereof, and the portion folded in a U-shape is the hole 6 of the housing 63.
1 and 62, and the third bent portion 64c is
Is mounted on the housing 63 so as to be exposed on the surface side of the housing 63.

Next, the connection between the rotary joint and the substrate according to the fifth embodiment will be described. The rotary joint is fastened and fixed to a fixing plate 15 by a mounting screw 16. Then, the substrate 51 is arranged from the back surface side of the rotary joint so that the extension portions 50c of the internal terminals 50a and the external terminals 50b pass through the through holes 52 and 53, respectively. Next, as shown in FIG. 5, the connection joint 60 is attached while being pressed from the back surface side of the substrate 51. At this time,
The connection joint 60 includes first and second bent portions 64a, 6
4b moves in the direction of the rotary joint while being spread, and the third bent portion 64c of the spring electrode 64 is
Abut. Further, the connection joint 60 is pressed until the third bent portion 64c is expanded to connect the rotary joint and the substrate 51. Therefore, the spring electrode 64
The internal terminal 50a and the extension 50
c and is electrically connected to the lands 54 and 55 via the third bent portion 64c. The internal terminal 13a of the rotary side coaxial connector 13
Connected to the electrode pattern 56 of the substrate 51 via the rotating inner conductor 2, the inner conductor brush 8, the inner conductor contact plate 6, the inner terminal 50a of the fixed-side coaxial connector 50, the spring electrode 64, the land 54, and the through hole 52. Is done. The external terminals 13b of the rotary side coaxial connector 13 include the rotary side external conductor 1, the external conductor contact plate 10, the fixed side external conductor 4, the external terminal 50b of the fixed side coaxial connector 50, and the extension 50.
c, spring electrode 64, land 55 and through hole 53
Is connected to the electrode pattern 57 of the substrate 51, and a high-frequency signal is bidirectionally transmitted between the antenna and the substrate 51 via a rotary joint.

As described above, according to the fifth embodiment, the extension 50 c is provided on the external terminal 50 b of the fixed-side coaxial connector 50, and the internal terminal 5 of the fixed-side coaxial connector 50 is provided on the substrate 51.
0a and the through-holes 52 and 53 through which the extension 50c of the external terminal 50b are inserted respectively, and the internal terminal 50a and the extension 50c of the fixed side coaxial connector 50 are inserted through the through-holes 52 and 53. The spring electrode 64 of the connection joint 60 is connected to the internal terminal 50 from the back side of the substrate 51.
a and the extension portion 50c, the same effect as that of the first embodiment can be obtained, and the effect that the rotary joint and the board 51 can be easily attached and detached can be obtained.

In each of the above embodiments, the electrode pattern is provided on the front surface of the substrate on which the high-frequency circuit components are mounted. However, the electrode pattern may be provided on the back surface of the substrate.

[0028]

Since the present invention is configured as described above, it has the following effects.

According to the first aspect of the present invention, the extension portion extending in the axial direction to the external terminal of the coaxial connector for connecting the board of the rotary joint, and the coaxial connector for connecting the board which is bored in the board. A through-hole through which the extension of the internal terminal and the extension of the external terminal are respectively inserted, and the coaxial connector for connection with the board in a state where the extension of the internal terminal and the extension of the external terminal are inserted into the through-hole The internal and external terminal extensions are soldered to the board to electrically connect the rotary joint to the board, eliminating the need for a cable with a connector, reducing the number of parts and reducing costs. As well as down, electric loss is suppressed, and the coaxial connector for board connection and the board are firmly connected by soldering, and the connection part loosened due to vibration Excellent vibration resistance is obtained, and the coaxial connector for board connection and the board are directly soldered, reducing the axial mounting space of the rotary joint, eliminating the need for cable wiring space and miniaturization. The effect that it can be achieved is obtained.

According to the second aspect of the present invention, the thick portion provided on the external terminal of the coaxial connector for connecting the board of the rotary joint, and the internal terminal of the coaxial connector for connecting the board which is bored in the board. And a through hole through which the internal terminal of the coaxial connector for board connection is inserted into the through hole. Since the thick portion of the terminal is screwed to the substrate to electrically connect the rotary joint and the substrate, the mounting and dismounting of the substrate can be simplified in addition to the effect of the first aspect of the invention. The effect is obtained.

Further, according to the third aspect of the present invention, the extension portion extending in the axial direction to the external terminal of the coaxial connector for connecting the board of the rotary joint, and the connecting portion formed on the board and connected to the board. A through-hole for inserting the extension of the internal terminal and the extension of the external terminal of the coaxial connector, and a connection joint having a spring electrode fitted to each of the extension of the internal terminal and the extension of the external terminal of the coaxial connector for board connection. Prepared,
With the extended portions of the internal and external terminals of the coaxial connector for board connection inserted into the through holes, the spring electrodes are fitted to the extended portions of the internal and external terminals of the coaxial connector for board connection from the back side of the substrate. The rotary joint and the board are electrically connected by attaching a connection joint so as to match with each other, so that in addition to the effect of the first invention,
The effect that the attachment / detachment of the substrate can be made easier can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a substrate connection structure of a rotary joint according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the engagement state between the rotary joint and the board in the board connection structure of the rotary joint according to the first embodiment of the present invention, as viewed from the back surface side.

FIG. 3 is a sectional view showing a board connection structure of a rotary joint according to a third embodiment of the present invention.

FIG. 4 is a perspective view of the engagement state between the rotary joint and the substrate in the substrate connection structure of the rotary joint according to the third embodiment of the present invention, as viewed from the back surface side.

FIG. 5 is a sectional view showing a main part of a board connection structure of a rotary joint according to a fourth embodiment of the present invention.

FIG. 6 is a fragmentary cross-sectional view showing an engagement state between a rotary joint and a board in a rotary joint board connection structure according to a fourth embodiment of the present invention.

FIG. 7 is a sectional view showing a conventional rotary joint.

FIG. 8 is a cross-sectional view showing a substrate connection structure of a conventional rotary joint.

[Explanation of symbols]

30 fixed side coaxial connector (coaxial connector for board connection), 30a internal terminal, 30b external terminal, 30c
Extension part, 31 board, 32 solder, 33, 34 through hole, 40 fixed side coaxial connector (coaxial connector for board connection), 40a internal terminal, 40b external terminal, 40c
Thick portion, 41 board, 42 through hole, 46 mounting screw, 50 fixed side coaxial connector (coaxial connector for board connection), 50a internal terminal, 50b external terminal, 50
c extension part, 51 substrate, 52, 53 through hole,
60 connection joint, 64 spring electrode.

Claims (3)

(57) [Claims] 1. A connection structure between a substrate on which a high-frequency component is mounted and a rotary joint disposed between a rotating body and the substrate and transmitting a high-frequency signal in both directions, wherein the rotary joint is connected to the substrate. An extending portion extending in the axial direction to the external terminal of the coaxial connector for through-hole, and a through hole formed in the substrate and penetrating the extending portion of the internal terminal and the external terminal of the coaxial connector for substrate connection respectively. In the state where the extension of the internal terminal and the external terminal of the coaxial connector for board connection is inserted through the through hole,
A substrate for a rotary joint, wherein the extended portions of the internal terminal and the external terminal of the coaxial connector for substrate connection are soldered to the substrate to electrically connect the rotary joint to the substrate. Connection structure. 2. A connection structure between a substrate on which a high-frequency component is mounted and a rotary joint disposed between a rotating body and the substrate for transmitting a high-frequency signal in both directions, wherein the rotary joint is connected to the substrate. A thick portion provided at an external terminal of the coaxial connector for use, and a through hole formed in the substrate to allow an internal terminal of the coaxial connector for substrate connection to pass therethrough. With the internal terminals of the coaxial connector for board connection soldered to the board while being inserted into the through holes, the thick portions of the external terminals of the coaxial connector for board connection are screwed to the board, A board connection structure for a rotary joint, wherein the rotary joint and the board are electrically connected. 3. A connection structure between a substrate on which a high-frequency component is mounted and a rotary joint disposed between a rotating body and the substrate for transmitting a high-frequency signal in both directions, the substrate being connected to the rotary joint. An extending portion extending in the axial direction to the external terminal of the coaxial connector for through-hole, and a through hole formed in the substrate and penetrating the extending portion of the internal terminal and the external terminal of the coaxial connector for substrate connection respectively. A connection joint having a spring electrode fitted into each of the extension of the internal terminal and the extension of the external terminal of the coaxial connector for board connection, the extension of the internal terminal and the extension of the external terminal of the coaxial connector for board connection. Is inserted through the through hole, and the spring electrode is inserted from the back side of the board so as to be fitted to the extension of the internal terminal and the external terminal of the board connection coaxial connector. The board connection structure of a rotary joint, wherein the connection joint is attached to electrically connect the rotary joint to the board.