JP2009054320A - Coaxial multicore connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coaxial multicore connector which allows the high-speed transmission of a reliable signal and the high-density placement of contact pins in contact with an external electrode of a printed circuit board, and is easily manufactured and assembled. <P>SOLUTION: The coaxial multicore connector includes: a grid structure including grid plates that are disposed in parallel with one another, a plurality of grid plates that are disposed perpendicularly with respect to the grid plates disposed in parallel with one another, and a contact for a signal wire that is disposed in each of a plurality of angular cylinder-shaped frames each having a square horizontal section with these grid plates in a grid form; and a housing in which an accommodation space accommodating the grid structure is formed, wherein the grid plates disposed in parallel with one another are connected to the shield of the coaxial cable accommodated in the angular cylinder-shaped frames; a contact for grounding is placed on its bottom end; the contact for the signal wire includes a columnar insulator and center contact pins that are integrated to the columnar insulator to protrude from its top and bottom and connected to the central conductor of the coaxial cable. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a printed circuit board pressing type coaxial multi-core connector having a shield structure formed by combining metal plates in a lattice shape.

  Conventionally, coaxial multicore connectors for connecting a plurality of high-speed transmission coaxial cables to a printed circuit board are well known, as shown in Patent Documents 1, 2, and 3. Conventional coaxial multi-core connectors generally have a large number of probes as contact pins connected to each coaxial cable arranged in an insulating block, and the entire insulating block is pressed against the printed circuit board, whereby the probe is mounted on the corresponding printed circuit board. Contact the external electrode. Accordingly, one end side of the plurality of coaxial cables and the printed circuit board are electrically connected. As a result, for example, an electronic device connected to the other end side of the coaxial cable and the printed circuit board are electrically connected.

Microfilm of Japanese Utility Model No. 59-11325 (Japanese Utility Model Application No. 60-123665) JP 2003-232834 A JP 2005-537481 gazette

  In recent years, as the number of signal lines between a printed circuit board and an electronic device is increased, the probe is also required to be downsized. By the way, each probe used for the conventional coaxial multicore connector has a coaxial structure over its entire length. Therefore, with the miniaturization of the probe, the distance between the outer conductor for shielding and the center conductor for signal lines becomes smaller, and it may not be possible to secure the required impedance, and stable and reliable signal transmission may not be possible. . In other words, if the required impedance is to be ensured, the diameter of the probe becomes large, and the probe cannot be arranged at a high density on the insulating block. In addition, it is difficult to manufacture and assemble the probe, which may increase the manufacturing cost of the coaxial multicore connector.

  In view of these problems, the object of the present invention is to enable high-speed transmission of a highly reliable signal, to arrange contact pins in contact with external electrodes of a printed circuit board at high density, and to manufacture and assemble It is an object of the present invention to provide a coaxial multicore connector that is easy to handle.

  In order to achieve the above object, a coaxial multicore connector according to the present invention is a coaxial multicore connector that can simultaneously connect a plurality of coaxial cables that transmit signals at high speed to external electrodes of a printed circuit board. A grid plate arranged in parallel, a plurality of grid plates arranged at right angles to the grid plates arranged in parallel, and a plurality arranged at right angles to the at least two grid plates arranged in parallel A grid structure including signal line contacts respectively arranged in a plurality of rectangular tube frames having a horizontal cross section square formed by the grid plates in a grid shape, and containing the grid structure, The housing includes a housing in which an accommodation space that opens at least downward is formed, and the at least two parallel lattice plates are accommodated in the rectangular tubular frame. It is connected to the shield of the cable, and a ground contact is provided at the lower end thereof. The signal line contact extends vertically through the columnar insulator and the center of the columnar insulator. A center contact pin is formed integrally with the columnar insulator so as to protrude from above and below the body, and is connected to a center conductor through which the signal of the coaxial cable is transmitted.

  The coaxial multicore connector according to the present invention is directed downward via a coil spring so that the lower end of the center contact pin from which the signal line contact protrudes downward from the columnar insulator protrudes from the lower surface of the housing. It is preferable to be arranged so as to be vertically movable in the rectangular tube-shaped frame.

  In the coaxial multicore connector according to the present invention, the columnar insulator constituting the signal line contact is formed in a columnar shape, and a spiral groove is formed on the outer periphery of the columnar insulator. The at least two grid plates arranged in parallel are formed with stopper pieces that engage with the spiral grooves, and the signal line contacts preferably rotate as they move up and down.

  In the coaxial multicore connector according to the present invention, the housing further includes a slider movable in a longitudinal direction of the housing, and the slider has a slider body having a plurality of hooks and a slider lever for operating the slider body. The housing has a lower surface of the housing approaching the printed circuit board by engaging a hook of the slider with an engagement pin provided in a fixed guide previously attached to the printed circuit board. It is preferable to be fixed to a printed circuit board.

  In the present invention, a grid plate functioning as a shield is assembled in a lattice shape, so that a center contact pin as a signal line for high-speed signal transmission is arranged in a square cylindrical frame having a horizontal cross section. And a large space can be obtained between the signal lines. As a result, sufficient impedance can be ensured, and highly reliable signal transmission is possible.

  Also, the coaxial cable connected to the coaxial multicore connector can connect the coaxial cable with high density to the coaxial multicore connector by sharing the lattice plate functioning as a shield with the coaxial cables adjacent to the left and right front and rear. it can.

  Furthermore, the coaxial multi-core connector according to the present invention only has to assemble a plurality of lattice plates in a lattice shape and fit into a housing space provided in the housing, so that the structure is simple, and assembly and manufacture are easy. .

  Further, the signal line contact is formed so as to be rotatable as the signal line contact moves upward when the housing is attached to the printed circuit board, so that the center contact pin of the signal line contact is connected to the printed circuit board. The external electrode can be wiped. Thereby, a reliable electrical connection is guaranteed.

  Furthermore, the coaxial multicore connector according to the present invention can be connected to the printed circuit board via a slider, whereby the coaxial multicore connector can be easily attached to the printed circuit board with a small force. As a result, a large number of coaxial cables can be simultaneously electrically connected to the printed circuit board.

  Hereinafter, preferred embodiments of a coaxial multicore connector according to the present invention will be described with reference to the accompanying drawings.

  1 to 6 are views for explaining an outline of attachment of the coaxial multicore connector 1 to the printed circuit board 100. FIG. FIG. 1 is a schematic front view showing a coaxial multicore connector according to the present invention connected to a printed circuit board. 2 is a cross-sectional front view of the coaxial multicore connector of FIG. 1 for explaining the state immediately before being connected to the printed circuit board, and FIG. 3 is for explaining the state of being connected to the printed circuit board. FIG. 3 is a cross-sectional front view of a coaxial multicore connector similar to FIG. 2. FIG. 4 is a side view of the coaxial multicore connector of FIG. 3 as viewed from the left side, showing a state connected to the printed circuit board. FIG. 5 is a top view of a fixed guide for the coaxial multicore connector of FIG. FIG. 6 is a schematic bottom view of the coaxial multicore connector of FIG.

  In this specification, the center line O2-O2 is a center line extending in the left-right (longitudinal) direction of the coaxial multicore connector 1, and the center line O3-O3 is orthogonal to the center line O2-O2, The center line O1-O1 passes through the intersection of the center line O2-O2 and the center line O3-O3, and extends to the center line O2-O2 and the center line O3-O3. It is a center line extending in the vertical (height) direction perpendicular to each other.

  A coaxial multicore connector 1 according to an embodiment of the present invention is roughly provided in a connection mechanism for connecting a coaxial cable 80 and a housing 10, a housing 10 having a ground contact 49 and a signal line contact 60, and the housing 10. And an attachment mechanism composed of a fixed guide 90 fixed to the printed circuit board 100 in advance.

  Initially, the attachment mechanism to the printed circuit board 100 of the coaxial multi-core connector 1 which concerns on this invention is demonstrated.

  As shown in FIGS. 1 to 3, the coaxial multicore connector 1 according to the present invention electrically connects a plurality of coaxial cables 80 to a printed circuit board 100 through a slider 70 and a fixed guide 90 constituting an attachment mechanism. It is comprised so that it can connect. In other words, the coaxial multicore connector 1 according to the present invention is configured to be detachable from the printed circuit board 100 via an attachment mechanism. The coaxial multicore connector 1 generally includes a housing 10 as an insulating block and a slider 70 that attaches the housing 10 to the printed circuit board 100 in conjunction with a fixed guide 90 fixed to the printed circuit board 100. The slider 70 and the fixed guide 90 constitute a mechanism for attaching the coaxial multi-core connector 1 (more specifically, the housing 10) to the printed circuit board 100. As will be described later, the housing 10 is provided with a plurality of contacts 49 and 60 that can contact corresponding external electrodes (not shown) of the printed circuit board 100, and each of the plurality of contacts 49 and 60 includes: A plurality of corresponding coaxial cables 80 are detachably connected.

  A slider 70 that constitutes a mechanism for attaching the coaxial multicore connector 1 to the printed circuit board 100 is a plate-like member that is held vertically, and is followed by a slider lever 71 (in this embodiment, on the right side of the slider lever 71). (Continued) has a slider body 72. The slider main body 72 is formed with a plurality of (four in this embodiment) long holes 74 that are arranged so that the respective long axes are aligned in the horizontal direction. Each of the long holes 74 passes through the slider main body 72 in the front-rear direction (perpendicular to the paper surface) as shown in FIGS. A plurality of substantially L-shaped hooks 76 project from the slider body 72 so as to correspond to the plurality of long holes 74, respectively. Each of the hooks 76 includes a vertical portion 76a and a horizontal portion 76b, and the tip portion of the horizontal portion 76b is formed as a tip inclined surface 76c that descends to the right. An engaging recess 77 formed between the hook 76 and the lower end of the slider main body 72 is formed so as to be positioned corresponding to the long hole 74. For example, as shown in FIG. 2, the engaging recess 77 is open toward the right. Therefore, an engagement pin 95 of the fixed guide 90 described later can be fitted into the engagement recess 77 from the open end of the engagement recess 77.

  2 and 3, the slider main body 72 of the slider 70 is horizontally left and right (arrows F1 and F2) in the slider accommodating space 14 of the housing 10 formed so as to open downward. It is housed movably. As shown in FIG. 6, the slider accommodating space 14 is located above the guide body accommodating space 13 formed along the center line O2-O2 extending in the left-right direction of the housing 10 and also along the center line O2-O2. Is formed. The width (length in the front-rear direction) of the slider accommodating space 14 is preferably slightly larger than the thickness (length in the front-rear direction) of the slider 70. As shown in FIGS. 2 and 3, the slider accommodating space 14 is also open on the left side in the drawing so that the slider lever 71 can pass leftward.

  The slider 70 penetrates the guide pin 17 that crosses the slider accommodating space 14 into a long hole 74 provided in the slider main body 72, so that the slider accommodating space 14 and the guide pin 17 enter the slider accommodating space 14. It is held movably in the horizontal direction. The slider 70 can move to the left and right in the horizontal direction by a distance that allows the guide pin 17 to move in the long hole 74. Specifically, the slider 70 is shown in FIG. 3 in which the guide pin 17 is located at the right end of the long hole 74 and the guide pin 17 is located at the left end of the long hole 74. It is possible to move left and right in the horizontal direction between the second position.

  The slider 70 is attached to the housing 10 by first inserting the slider main body 72 of the slider 70 into the slider accommodating space 14 and then penetrating the guide pin 17 through the long hole 74 of the slider main body 72. Can be attached. In this case, the guide pin 17 itself is fixed to the housing 10 by being press-fitted into a through hole (not shown) penetrating the front and rear walls forming the slider collecting space 14 of the housing 10.

  The fixing guide 90 constituting the attachment mechanism is fixed to the printed circuit board 100 in advance using a fixing means such as a screw 99. As shown in FIG. 5, the fixed guide 90 according to the present embodiment includes a guide body 91 having a rectangular section that is elongated to the left and right, a columnar left guide post 92 and a right guide post provided on both left and right sides of the guide body 91. 93.

  The left and right guide posts 92 and 93 are fitted into the left guide post accommodation space 15 and the right guide post accommodation space 16 formed on both sides of the housing 10, thereby positioning the housing 10 with respect to the printed circuit board 100. Specifically, in this embodiment, the center line O2-O2 extending in the left-right direction of the housing 10, the center line O3-O3 extending in the front-rear direction (see FIG. 6), and the center line O2- extending in the left-right direction of the fixed guide 90 are provided. Positioning is performed so that O2 and the center line O3-O3 (see FIG. 5) extending in the front-rear direction coincide with each other. As a result, the left and right guide posts 92 and 93 are positioned so that the contacts 49 and 60 provided on the housing 10 correspond to the external electrodes of the printed circuit board 100. The left and right guide posts 92 and 93 are also configured as fixing portions that fix the fixing guide 90 to the printed circuit board 100. In the present embodiment, the left and right guide posts 92 and 93 are formed with screw holes that open downward, and are fixed to the printed circuit board with screws 99 through the screw holes. The upper ends of the left and right guide posts 92 and 93 are tapered upward so that the guide posts 92 and 93 can be easily fitted into the housing spaces 15 and 16 of the corresponding housing 10. It is preferable. Reference numeral 92a denotes a groove in which the slider lever 71 of the slider 70 is guided.

The guide body 91 is formed with a left slit 94a and a right slit 94b in which the hook 76 of the slider 70 is accommodated. In this embodiment, the slits 94a and 94b are provided symmetrically with respect to the center line O3-O3 extending in the front-rear direction. This is because the fixing portion 91a for fixing the stationary guide 90 relative to the printed circuit board 100 is provided in the longitudinal direction (lateral direction) central portion of the fixed guide 90, the slits 94a, 94b, said fixed portion 91a This structure is not necessarily limited to this position. Each of the left and right slits 94a and 94b may or may not penetrate the guide body 91 in the vertical direction as in this embodiment. In the slits 94a and 94b, a plurality of engagement pins 95 that fit into engagement recesses 77 formed in the slider 70 are formed so as to be orthogonal to the center line O2-O2.

  When the guide posts 92 and 93 of the fixed guide 90 are fitted into the post receiving spaces 15 and 16 of the housing 10, the engagement pin 95 is located on the right side of the tip inclined surface 76 c of the hook 76 of the slider 70 in the first position. It attaches to the guide main body 91 so that it may be located in the direction. Each of the engagement pins 95 is attached to the guide main body 91 via through holes 97 and 98 formed through the wall of the guide main body 91 sandwiching the slit 94a or 94b in the front-rear direction.

  An operation of attaching the housing 10 of the coaxial multicore connector 1 to the printed circuit board 100 through the attachment mechanism having the above configuration will be described with reference to FIGS.

  The fixing guide 90 constituting the attachment mechanism is attached in advance to the printed circuit board 100 as described above. The housing 10 is also connected to the coaxial cable 80 in advance.

  As shown in FIG. 1, the housing 10 is disposed above the fixed guide 90. At this time, the slider 70 constituting the attachment mechanism is fully pulled leftward (in the direction of arrow F1), that is, in the first position shown in FIG.

  Subsequently, the housing 10 is lowered so that the guide posts 92 and 93 of the fixed guide 90 are fitted into the guide post receiving spaces 15 and 16 of the corresponding housing 10. Accordingly, the housing 10 is positioned at a predetermined position with respect to the printed circuit board 100, and the contacts 49 and 60 provided on the housing 10 and slightly projecting downward from the lower surface of the housing 10 are respectively connected to the corresponding printed circuit board 100. It is placed on an external electrode (not shown). At this time, the guide main body 91 of the fixed guide 90 is accommodated in the guide accommodating space 13 of the housing 10, and the hook 76 of the slider 70 is accommodated in the slits 94 a and 94 b of the fixed guide 90. Further, as shown in FIG. 2, the engagement pin 95 provided in the slit 94 a or 94 b is generally positioned to the right of the open end of the engagement recess 77 of the slider 70. More specifically, the engagement pin 95 is located on the right side of the tip inclined surface 76 c of the horizontal portion 76 b of the hook 76.

  From the state shown in FIG. 2, the slider 70 is moved to the right (in the direction of arrow F <b> 2) from the first position shown in FIG. 2 to the second position shown in FIG. 3 via the slider lever 71. The engagement pin 95 is guided by the tip inclined surface 76c of the horizontal portion 76b of the hook 76, and is raised as the slider 70 moves to the right. However, since the fixed guide 90 having the engaging pin 95 is fixed to the printed circuit board 100, the slider 70 is pushed down relatively (downward in the arrow P direction) as a result. As a result, the contacts 49 and 60 provided on the housing 10 are pressed against the external electrodes of the printed circuit board 100 in the direction of the arrow P against the spring force applied thereto.

  When the slider 70 reaches the second position shown in FIG. 3, the rightward movement of the slider 70 is restricted by the engagement pin 95. At the same time, the housing 10 is fixed to the fixed guide 90 and, in turn, to the printed circuit board 100. At the same time, the contacts 49 and 60 can contact the external electrodes of the printed circuit board 100 in an electrically stable state at a desired contact pressure.

  Next, a lattice structure 20 provided in the housing 10 of the coaxial multi-core connector 1 according to the embodiment of the present invention and a connection mechanism between the lattice structure 20 and the coaxial cable 80 electrically connected to the lattice structure 20 will be described with reference to FIGS. Will be described.

  FIG. 7 is a schematic cross-sectional view of the second half of the housing taken along the line O3-O3 of FIG. 6, showing a state where the coaxial cable is partially connected and the contact is in contact with the printed circuit board. Yes. FIG. 8 is a partial cross-sectional view of the housing in a state where the coaxial cable is not connected, taken along the line AA in FIG. 7, and further, a third lattice constituting a lattice structure. A state is shown in which the plate is cut along the line BB. 9 is a schematic partially enlarged bottom view of the housing of FIG. 7, and FIG. 10 is a schematic partially enlarged top view of the housing of FIG. 11 is a partial perspective view of only the lattice structure of the housing shown in FIG. 7, and FIG. 12 is a perspective view of a signal line contact. FIG. 13 is a front view of the first lattice plate constituting the lattice structure, FIG. 14 is a front view of the second lattice plate constituting the lattice structure, and FIG. It is a front view of the 3rd grating | lattice board to comprise. FIGS. 16A and 16B are diagrams for explaining the contact of the signal line contact and the ground contact with the printed circuit board. FIG. 16A shows a state immediately before the contact, and FIG. 16B shows a state when the contact is completed. FIG. 17 is a view for explaining the structure of the connection end formed at one end of the coaxial cable, where (a) is a front view and (b) is a cross-sectional view.

  The housing 10 is formed of an electrically insulating synthetic resin material and has a substantially elongated rectangular parallelepiped shape extending in the left-right direction (see FIGS. 1 to 6). A plurality of coaxial cable housing spaces 19, two lattice structure housing spaces 11, 12, one guide body housing space 13, slider housing space 14, and two guide post housing spaces 15, 16 are formed in the housing 10. Yes.

In this embodiment, each coaxial cable housing space 19 is generally formed in substantially the upper half of the housing 10 as shown in FIG. 7, and passes through the housing 10 in the vertical direction. It communicates with the body accommodating spaces 11 and 12. As shown in FIG. 10, the cable housing space 19 has a shape in which two circular portions 19a arranged symmetrically with respect to the connecting portion 19b are connected via the connecting portion 19b, as shown in FIG. Is formed. Therefore, in each coaxial cable housing space 19, one coaxial cable 80 is accommodated in each circular portion 19a, and two coaxial cables 80 are conveniently accommodated. In the coaxial cable housing space 19, the longitudinal center lines O4-O4 are arranged in parallel with each other in parallel to the center line O3-O3 of the housing 10 (see FIG. 10), and with respect to the center line O2-O2 of the housing 10 Symmetrically arranged in two rows.

  Each circular portion 19 a of the coaxial cable housing space 19 has a diameter slightly larger than the outer diameter of the coaxial cable 80. The first lattice plate 30 engages with the connecting portion 19b of the coaxial cable housing space 19 so that the first lattice plate 30 partitions the two circular portions 19a of the coaxial cable housing space 19 as described later. A vertical groove 19c extending in the vertical direction is formed so as to project perpendicular to the connecting portion 19b.

  Each of the two lattice structure accommodation spaces 11 and 12 is formed in a substantially lower half of the housing 10, has a substantially rectangular horizontal section, and is open downward. Each of the lattice structure housing spaces 11 and 12 is formed corresponding to each row of the plurality of coaxial cable housing spaces 19 arranged in the two rows. That is, the lattice structure accommodating spaces 11 and 12 are formed so as to be symmetrically arranged in parallel with each other with respect to the center line O2-O2 of the housing 10 (see FIG. 6). In each of the lattice structure accommodation spaces 11 and 12, most of the lattice structure 20 described later is accommodated. A vertical groove (for example, in FIG. 9) in which the side portions of the first to third lattice plates 30, 40 and 50 constituting the lattice structure 20 are press-fitted on the outer periphery of each of the lattice structure accommodation spaces 11 and 12. It is preferable that the vertical groove 12b) as shown is protruded outward (see FIG. 6).

  The guide main body accommodating space 13 is a space for accommodating the guide main body 91 of the fixed guide 90, and is formed between the two parallel lattice structure accommodating spaces 11 and 12 and opened downward. Is done. The guide main body accommodating space 13 has a width that is slightly larger than the width of the guide main body 91 (length in the front-rear direction), and substantially the same height as the height of the guide main body 91 (length in the vertical direction). The guide body housing space 13 extends in the left-right direction along the center line O2-O2 of the housing 10 and communicates with guide post housing spaces 15, 16 formed on the left and right sides of the guide body housing space 13.

  The slider accommodating space 14 is a space for accommodating the slider main body 72 of the slider 70, and is formed on the guide main body accommodating space 13. The slider accommodating space 14 is formed between the two parallel lattice structure accommodating spaces 11 and 12 and opens downward, that is, toward the guide body accommodating space 13. The slider accommodating space 14 extends in the left-right direction along the center line O2-O2 of the housing 10 and either one of the guide post accommodating spaces 15, 16 (in this embodiment, the left guide post accommodating space 15). Communicate with. When the housing 10 is fixed to the printed circuit board 100 via the slider 70 and the fixed guide 90, the slider accommodating space 14 faces the slits 94a and 94b of the fixed guide 90 (see FIG. 7).

  The two guide post accommodating spaces 15 and 16 are spaces for accommodating the corresponding guide posts 92 and 93 of the fixed guide 90, respectively, and are the left and right ends of the housing 10 and the center line O2-O2 of the housing 10. It is formed so as to open upward and downward. Each guide post receiving space 15, 16 has a contour (at least on the inner side of the receiving guide 92 or 93 (side facing the center line O 3 -O 3 of the housing 10)) in order to exert the function of positioning the housing 10. It is formed so as to have the same shape as the horizontal sectional shape (see FIG. 6).

  Here, a connection mechanism of the coaxial cable 80 connected to the lattice structure 20 will be briefly described with reference to FIG.

  The connection mechanism of the coaxial cable 80 to the lattice structure 20 is basically the same as the connection mechanism of the coaxial cable to the probe in the conventional coaxial multicore connector.

  The coaxial cable 80 includes a central conductor 81 that transmits a high-speed signal, an insulator 82 that surrounds the central conductor 81, an outer conductor 83 as a shield, and a covering 84. A cable connector 85 that is electrically connected to the lattice structure 20 described later is provided at one end of the coaxial cable.

  The cable connector 85 generally includes a sleeve 86, a contact body 87 and a tubular socket 88.

  The tubular socket 88 is a tubular member made of a conductive material. One end is connected to the center conductor 81 by soldering, for example, and the other end 88a is connected to the center contact pin 61 of the signal line contact 60 of the lattice structure 20. The The other end 88a of the tubular socket 88 is provided with a plurality (two in this embodiment) of elongated slits 88b that open toward the tip (downward in FIG. 17B) at equal intervals, and the socket 88 as it goes to the tip. The diameter is formed so as to be thin. Therefore, the other end 88 a of the tubular socket 88 can elastically contact the center contact pin 61 of the signal line contact 60. As a result, the center contact pin 61 can be connected to the tubular socket 88 so as to be slidable in the vertical direction in FIG.

  The contact body 87 is a cylindrical member made of an insulating material, and the tubular socket 88 is accommodated in an internal space 87b having an insertion hole 87a at the tip. As shown in FIGS. 17A and 17B, the contact body 87 is formed as a large-diameter portion above the step portion 87c formed on the outer periphery, and the step portion 87d formed on the large-diameter portion is formed on the contact portion 87c. The sleeve 86 is supported by contacting the tip of the sleeve 86.

  The sleeve 86 is a tubular member made of a conductive material. The sleeve 86 houses the outer conductor 83 constituting the shield of the coaxial cable 80 and is electrically connected to the outer conductor 83 by, for example, soldering. As described above, the tubular sleeve 86 is attached to the contact main body 87 by abutting the tip of the tubular sleeve 86 against the stepped portion 87 d provided in the large diameter portion of the contact main body 87. The rear end of the sleeve 86 extends to a position that covers the covering 84 of the coaxial cable 80.

  Next, the lattice structure 20 that is a feature of the present invention will be described.

  The lattice structure 20 includes a first lattice plate 30, a second lattice plate 40 having a ground contact 49, a third lattice plate 50, and a signal contact 60.

  The first lattice plate 30 is a member that is accommodated in the vertical groove 19 c of the coaxial cable accommodation space 19 and partitions the coaxial cable accommodation space 19 in the front and rear directions. Further, at the lower side, the first lattice plate 30 is housed in the vertical grooves of the lattice structure accommodation space 11 or 12 at the lower side, and partitions the lattice structure space 11 or 12 back and forth (see FIG. 6). . Further, the first lattice plate 30 is also a member having a function as a grounding conductor that is electrically connected to the shielding outer conductor 83 of the coaxial cable 80.

  In this embodiment, the first grid plate 30 is formed by punching two conductive metal thin plates into the same shape as shown in FIG. 13 (30a, 30b) and stacking them back to back. The Therefore, since the shape of each of the processed metal thin plates 30a and 30b constituting the first lattice plate 30 is exactly the same, only the shape of one processed metal thin plate 30a will be described here, and the other processed metal thin plate 30b will be described. (The parts of the processed metal sheet 30b corresponding to the parts of the processed metal sheet 30a are indicated by b instead of the alphabet a attached to the reference numerals of the parts of the processed metal sheet 30a. ).

  The processed metal thin plate 30a has a length in the left-right direction in FIG. 13 that is slightly larger than the length in the left-right direction of the lattice structure housing space 11 or 12 of the housing 10, and the length (height) in the up-down direction. The housing 10 has a substantially rectangular shape when viewed from the front and has substantially the same height as the height of the housing 10. In the processed metal thin plate 30a, a plurality of slits 36a that open upward and extend in the vertical direction are formed in parallel to each other. A plurality of partition pieces 31a that partition the coaxial cable housing space 19 are formed between the slits 36a. The partition plate 31 a is fitted into a vertical groove 19 c formed in the coaxial cable housing space 19 and fixes the lattice structure 20 to the housing 10. Therefore, the width (length in the left-right direction) q of the partition piece 31a has a length substantially equal to the interval p, where the interval between the vertical grooves 19c is p. Further, the width q of the partition piece 31a forms a space in which one cable contact 85 of the coaxial cable 80 is accommodated when the lattice structure 20 is constituted by the first to third lattice plates 30, 40 and 50. Therefore, it is equal to the outer diameter D of the cable contact 85. In addition, above each slit 36a, in order to prevent the partition piece 31a of the processed metal thin plate 30a from coming out of the longitudinal groove 19c provided in the housing 10, the engaging step portion 38a is opposed to the slit 36a. Is preferably provided.

  A third grid plate 50 described later is inserted into the slit 36a so as to mesh with the slit 53 formed therein. As a result, the first lattice plate 30 and the third lattice plate 50 are assembled in a state of being orthogonal to each other to form the lattice structure 20 (see FIG. 11). Therefore, the width (length in the left-right direction) of the slit 36 a is substantially equal to the thickness of the third grid plate 50.

  Each of the partition pieces 31a formed between the adjacent slits 36a of the processed metal thin plate 30a is formed with a retaining piece 32a for preventing the cable contact 85 provided at one end of the coaxial cable 80 from coming off. As shown in FIGS. 7 and 13, the retaining piece 32 a is cut and raised forward as a leaf spring piece having a lower end as a free end. Since the free end of the retaining piece 32a abuts on the rear end of the sleeve 86 of the cable contact 85, the cable contact 85 is prevented from coming off. A contact piece 33a that contacts the sleeve 86 of the cable contact 85 is formed at an appropriate position directly below the retaining piece 32a provided on the upper part of the partition piece 31a. The contact piece 33a is cut and raised forward as a leaf spring piece having a lower end as a free end, like the retaining piece 32a.

  A stopper piece 34a is formed directly below the contact piece 33a and a locking piece 35a is formed directly below the slit 36a at the lower portion of the processed metal thin plate 30a where the slit 36a is not formed. The stopper piece 34a is cut and raised forward as a leaf spring piece having an upper end as a free end, and engages with a first spiral groove 63a formed in an insulator 62 of a signal line contact 60 described later. Is formed. The locking piece 35a is cut and raised forward as a leaf spring piece having a lower end as a free end, and is formed at a position to engage with a locking recess 57 formed in a third lattice plate 50 described later. . The stopper piece 34a abuts on the upper end of the first spiral groove 63a, thereby restricting the downward movement of the signal line contact 60. Further, the stopper piece 34a has a function of rotating the signal line contact 60 by moving along the first spiral groove 63a when the coaxial multicore connector 1 is connected to the printed circuit board 100.

  The first lattice plate 30 is made of processed metal thin plates 30a and 30b, with retaining pieces 32a and 32b, contact pieces 33a and 33b, stopper pieces 34a and 34b, locking pieces 35a and 35b, and slits 36a and 36b, respectively. It is formed by overlapping back to back. In the present embodiment, two first grid plates 30 are prepared corresponding to the two grid structure housing spaces 11 and 12.

  The second grid plate 40 is disposed in parallel with the first grid plate 30 and along the front and rear side walls that form the grid structure housing space 11 or 12, and both end portions of the second grid plate 40. Are accommodated in vertical grooves formed in the lattice structure accommodating space 11 or 12. The second grid plate 40 is disposed so as to face the substantially lower half of the first grid plate 30, that is, the lower portion from the position where the contact pieces 33a and 33b of the first grid plate 30 are provided. Is done. Therefore, in the present embodiment, two and four convenient second lattice plates 40 are prepared for each of the lattice structure spaces 11 or 12. Similar to the first grid plate 30, the second grid plate 40 is a member having a function as a shield and ground conductor that is electrically connected to the shield outer conductor 83 of the coaxial cable 80. The second grid plate 40 further includes a ground contact 49 that contacts a corresponding ground external electrode of the printed circuit board 100.

  Similar to the first grid plate 30, the second grid plate 40 is formed of a conductive metal thin plate and has a substantially rectangular shape as viewed from the front as shown in FIG. The second grid plate 40 has a length in the left-right direction in FIG. 14 that is slightly larger than the length in the left-right direction of the grid structure housing space 11 or 12 of the housing 10. ) Has a length substantially equal to the depth (length in the vertical direction) of the lattice structure accommodation space 11 or 12.

  In the second grid plate 40 in this embodiment, a plurality of parallel slits 44 are formed through the second grid plate 40. The slit 44 is preferably formed so as to be slightly wider as it goes upward in order to facilitate assembly with the third lattice plate 50. The slits 44 of the second grid plate 40 are formed in a substantially upper part of the second grid plate 40, and the slits 44 are provided between the arms 55 of the third grid plate 50 described later and the partition pieces 54. The third lattice plate 50 is inserted so as to mesh with the formed short slit 58. Thus, the second lattice plate 40 and the third lattice plate 50 are assembled in a state of being orthogonal to each other, thereby forming the lattice structure 20 (see FIG. 11). Therefore, the width (length in the left-right direction) of the slit 44 of the second grid plate 40 is substantially equal to the thickness of the third grid plate 50.

  The interval between the slits 44 of the second lattice plate 40 is the same interval q as the slits 36 a or 36 b provided in the first lattice plate 30, and the number thereof is also the number of the slits 36 a or 36 b of the first lattice plate 30. Is the same. The lower end of the slit 44 of the second grid plate 40 engages with the short slit 57 of the third grid plate 50, and when assembled as the grid structure 20, the second grid plate 40 and the third grid plate The upper surface of 50 is set to be flush with each other.

  A contact piece 41 that contacts the sleeve 86 of the cable contact 85 is formed between the adjacent slits 44 of the second grid plate 40 in the present embodiment. The contact piece 41 is cut and raised forward as a leaf spring piece having an upper end as a free end.

A stopper piece 43 is formed directly below the contact piece 41 in the lower portion of the second grid plate 40 where the slit 44 is not formed. The stopper piece 43 of the second lattice plate 40 is cut and raised forward as a leaf spring piece having an upper end as a free end, and is formed in an insulator 62 of a signal line contact 60 described later. It is formed to engage with the groove 63b. The stopper piece 43 of the second lattice plate 40 is provided at a position facing the stopper piece 34 a or 34 b of the first lattice plate 30. The stopper piece 43 regulates the downward movement of the signal line contact 60 by abutting against the upper end of the second spiral groove 63b. Similarly to the stopper piece 34a or 34b of the first lattice plate 30, the stopper piece 43 moves along the spiral groove 63 when the coaxial multi-core connector 1 is connected to the printed circuit board 100. The line contact 60 is rotated. That is, the stopper piece 43 of the second grid plate 40 cooperates with the stopper piece 34a or 34b of the opposing first grid plate 30 to restrict the downward movement of the signal line contact 60. (See FIG. 7).

  At the lower end of the second grid plate 40, in the present embodiment, a ground contact 49 is formed to protrude downward at the same pitch as the slit 44 and directly below the slit 44 in the present embodiment. As shown in FIG. 14, the ground contact 49 in this embodiment includes a short vertical portion 49a extending downward, an elastic deformation portion 49b curved from the vertical portion 49a and extending obliquely to the left, and an elastic deformation portion. It includes a contact portion 49c at the tip of 49b. When the tip contact portion 49 c overlaps with the adjacent ground contact 40, the tip contact portion 49 c may be bent through a step portion on the same side as the side where the free ends of the contact piece 41 and the stopper piece 43 are cut and raised ( (See FIG. 11). In this embodiment, the contact portion 49c of the ground contact 49 is set to be positioned above a contact portion 61a of a signal line contact 60 described later when assembled as the lattice structure 20. However, the vertical position of the contact portion 49c of the ground contact 40 is not limited to this, and may be set to be positioned below the contact portion 61a of the signal line contact 60, for example. In any case, the contact portion 49c protrudes downward from the lower end surface of the housing 10 in order to obtain a desired contact pressure with the external contact of the printed circuit board 100 when the ground contact 49 is in contact. Must be formed.

  The third grid plate 50 is a member that is orthogonal to the first grid plate 30 and the second grid plate 40 and partitions the grid structure housing space 11 or 12 into a plurality in the left-right direction. The third grid plate 50 is also arranged along the left and right side walls forming the grid structure housing space 11 or 12. The third grid plate 50 is assembled with the first grid plate 30 and the second grid plate 40 in the form of a grid, thereby forming a plurality of square frames with a horizontal cross section, and coaxial with each of the formed plurality of frames. A space for accommodating the cable contacts 85 of the cable 80 one by one is formed. Both side ends of the third lattice plate 50 are accommodated in the longitudinal grooves 12b formed in the lattice structure accommodation space 11 or 12. Similar to the second grid plate 40, the third grid plate 50 is substantially lower half of the first grid plate 30, that is, from the position where the contact pieces 33a and 33b of the first grid plate 30 are provided. It is arranged perpendicular to the side portion. Therefore, in the present embodiment, the third grid plate 50 is prepared by the number of coaxial cables 80 to be connected to the grid structure space 11 or 12 plus one. Similar to the first grid plate 30, the third grid plate 50 is a member having a function as a shield and ground conductor that is electrically connected to the shield outer conductor 83 of the coaxial cable 80.

  The third grid plate 50 is formed of a conductive thin metal plate, like the first and second grid plates 30 and 40, and has a substantially rectangular shape when viewed from the front as shown in FIG. Yes. The third grid plate 50 has a length in the left-right direction in FIG. 15 that is slightly larger than the length in the front-rear direction of the grid structure housing space 11 or 12 of the housing 10. ) Has a length substantially equal to the depth (length in the vertical direction) of the lattice structure accommodation space 11 or 12.

  In FIG. 15, the third lattice plate 50 in this embodiment has substantially L-shaped arms 55, 55 extending downward on both the left and right sides, and is open downward at substantially the center position in the left-right direction. A slit 53 is formed. Thus, two partition pieces 54 and 54 are formed on both sides of the slit 53, and a short slit 58 is formed between the partition piece 54 and the arm 55.

  The slit 53 meshes with the slits 36a and 36b of the first grid plate 30 and is inserted into the slit 53 in a state where the first grid plate 30 is orthogonal. Thereby, the first lattice plate 30 and the third lattice plate 50 are assembled in a lattice shape to form the lattice structure 20. The slit 58 meshes with the slit 44 of the second grid plate 40 and is inserted into the slit 58 in a state where the second grid plate 40 is orthogonal. Thereby, the second lattice plate 30 and the third lattice plate 50 are assembled in a lattice shape to form the lattice structure 20. In this way, the first to third lattice plates 30, 40 and 50 are assembled in a lattice shape, and the cable as a rectangular tube frame with a horizontal section square in which the cable contact 85 alone of the coaxial cable 80 is accommodated. A contact accommodating space is formed (see FIG. 9).

  By forming a square tube-like frame having a square horizontal section in this way, the first, second and third lattice plates 30, 40 constituting a signal line and a square tube-shaped shield for transmitting signals at high speed, and A space larger than 50 is secured as compared with the conventional cylindrical shield. Thereby, sufficient impedance is ensured between the signal line and the shield, and more reliable high-speed signal transmission is guaranteed as compared with conventional signal transmission. Further, since the first, second, and third lattice plates 30, 40, and 50 that function as shields are shared between the coaxial cables 80 that are adjacent to each other in the front, rear, left, and right, the coaxial cables 80 can be arranged with high density. Become.

  Therefore, the width (length in the left-right direction in FIG. 15) r of the partition plate 54 of the third grid plate 50 is equal to the diameter D of the cable contact 85, and the width of the slit 53 is the plate of the first grid plate 30. The width of the slit 55 is equal to the thickness of the second lattice plate 40. A partition plate is provided below the slit 53 so that engagement recesses 57 and 57 that are engaged by the engagement pieces 35 a and 35 b provided on the first lattice plate 30 face each other with the slit 53 interposed therebetween. 54, 54. When the locking pieces 35a and 35b are locked to the engaging recesses 57 and 57, the third engagement plate 50 is prevented from coming off upward. Further, the displacement of the ground contact 49 formed at the lower end of the second grid plate 40 is not hindered on the opposite side of the partition plates 54, 54 from the side where the engagement recesses 57, 57 are formed. The notches 59 and 59 are preferably formed (see FIG. 11).

  In the present embodiment, the upper part of each of the partition pieces 54 and 54 in which the slit 53 and the short slit 58 of the third lattice plate 50 are not formed is in contact with the stepped portion 87c of the cable contact 85. A stop piece 51 for stopping the entry is formed. Further, two support pieces 52a and 52b are formed in parallel below the stop piece 51, that is, between each stop piece 51 and the corresponding partition piece 54.

  The stop piece 51 is cut and raised toward the front (front side in FIG. 15) as a leaf spring piece having an upper end as a free end, abuts against a stepped portion 87 c of the cable connector 85, and further below the cable contact 85. It is formed to restrict the entry of The support pieces 52a and 52b are formed as leaf spring pieces having a lower end as a free end, and one of the two pieces 52a is cut forward and the other 52b is raised rearward. The support pieces 52a and 52b are formed to support the upper end of a coil spring 66 that urges a signal line contact 60, which will be described later, downward.

  The signal line contact 60 constituting the lattice structure 20 is a member that functions as a probe that connects the central conductor 81 that transmits a high-speed signal of the coaxial cable 80 to a corresponding external electrode of the printed circuit board 100. In the present embodiment, the signal line contact 60 is movable up and down downward in the cable contact housing space having a square horizontal section formed by the first, second and third lattice plates 30, 40 and 50 described above. Arranged to be rotatable. Further, when not in electrical contact with the printed circuit board 100, the front end portion is disposed so as to protrude downward from the lower end surface of the housing 10.

  As shown in FIGS. 7 and 12, the signal line contact 60 in this embodiment includes a center contact pin 61 and an insulator 62.

  The center contact pin 61 is made of a conductive material, and the upper part is inserted into the socket 88 of the cable contact 85 so as to be slidable in the vertical direction, and is electrically connected to the socket 88. The lower end of the center contact pin 61 is formed as a contact portion 61 a that contacts a corresponding external electrode of the printed circuit board 100. As shown in FIG. 7, the contact portion 61 a of the center contact pin 61 is preferably formed to have a slightly larger shape than the other portions. The center contact pin 61 is embedded in a cylindrical insulator 62 except for the upper portion and the contact portion, and is integrally formed. Since the outer diameter of the cylindrical insulator 62 is arranged in the cable contact accommodating space having a square horizontal section formed by the first, second and third lattice plates 30, 40 and 50, the coaxial cable 80. Is substantially equal to the outer diameter D of the cable contact 85.

  As shown in FIG. 7 and FIG. 12, the outer periphery of the cylindrical insulator 62 is opposed to the center line passing through the center contact pin 61, and the first and second spiral grooves are located at the positions to be pointed. 63a and 63b are formed. As shown in FIG. 16, the spiral grooves 63a and 63b have an inclined groove portion formed along the outer periphery at the upper side. The stopper pieces 34a or 34b provided on the first lattice plate 30 and the corresponding stopper pieces 43 provided on the second lattice plate 40 are engaged with the spiral grooves 63a and 63b, respectively. Therefore, as well shown in FIG. 16, when the signal line contact 60 moves relatively upward relative to the first and second grid plates 30 and 40 attached to the housing 10 by a distance h, The insulator 62 constituting the line contact 60 rotates to the right by the distance s. Thereby, the center contact pin 61 integrally formed with the insulator 62 also rotates, and the tip contact portion 61a of the center contact pin 61 contacts the contact portion 61a and the contact surface of each external contact of the printed circuit board 100 that is in contact with the contact portion 61a. Wiping. Therefore, the electrical connection between the center contact pin 61 and the external contact of the printed circuit board 100 becomes more reliable.

  In the present embodiment, the signal line contact 60 has a lower end in which one end of the coil spring 66 supported by the support pieces 52a and 52b provided on the third grid plate 50 is in contact with the upper surface of the insulator 62. It is energized towards. The signal line contact 60 has stoppers 34a or 34b provided on the first lattice plate 30 at the upper ends of the inclined grooves 63a and 63b and stoppers provided on the second lattice plate 40 corresponding thereto. Since the pieces 43 are in contact with each other, the downward movement is suppressed.

  In addition, below the insulator 62 of the signal line contact 60, in order to avoid interference with the ground contact 49, a small-diameter portion 64 smaller than the outer diameter of the insulator may be formed as in this embodiment. Further, the insulator 62 of the signal line contact 60 in the present embodiment is assumed to have a cylindrical shape, but is not limited thereto. For example, it may be a quadrangular prism. However, in this case, since the insulator 62 cannot be rotated, the spiral groove formed on the outer periphery of the insulator 62 is a linear groove extending in the vertical direction. Therefore, the contact portion 61a cannot be rotated, and a wiping effect cannot be expected.

  Hereinafter, the assembly of the coaxial multicore connector 1 and the electrical connection of the plurality of coaxial cables 80 to the printed circuit board 100 according to the present invention will be briefly described.

  The first, second and third lattice plates 30, 40 and 50 are assembled in a lattice shape, and a signal line contact 60 is further incorporated in each of a plurality of rectangular tube frames having a square horizontal section formed thereby. A structure 20 is formed. The lattice structure 20 is formed in the housing 10 and inserted into the lattice structure accommodation spaces 11 and 12 opened downward from below, whereby the coaxial multicore connector 1 according to the present invention is formed.

  Next, the cable connector 85 of the coaxial cable 80 is inserted from above into each circular portion 19 a partitioned by the first lattice plate 30 of the coaxial cable housing space 19 that opens upward of the housing 10. The cable connector 85 is inserted until the stepped portion 87c formed in the connector main body 87 comes into contact with the free end of the stop piece 51 formed on the third grid plate 50 (see FIG. 7). At this time, the rear end of the sleeve 86 of the cable connector 85 comes into contact with the free end of the retaining piece 32a or 32b of the first lattice body 30, and the disconnection from the housing 10 is prevented.

  Further, the sleeve 86 contacts the contact piece 33a or 33b of the first lattice body 30 and the contact piece 41 of the second lattice plate 40, and the first, second and third lattice bodies 30, 40 and 50 are It is electrically connected to the outer conductor 83 of the coaxial cable 80. Further, the center contact pin 61 of the signal line contact 60 is inserted into the tubular socket 88 of the cable contact 85, and the center contact pin 61 is electrically connected to the center conductor 81 of the coaxial cable 80.

  In this way, the housing 10 of the coaxial multi-core connector 1 to which the coaxial cable 80 is attached is attached to the printed circuit board 100 via the fixed guide 90 that is fixed to the printed circuit board 100 in advance as described above.

  Although the preferred embodiments of the coaxial multicore connector according to the present invention have been described above, the coaxial multicore connector is not limited to this embodiment.

  For example, the lattice structure may be accommodated in a lattice structure that penetrates the housing in the vertical direction. In this case, all of the first, second, and third lattice plates have substantially the same height as the housing, and the coaxial cable housing space formed above the housing also has a horizontal sectional square. The mechanism for attaching the housing to the printed circuit board may be attached using, for example, bolts and nuts, or may be attached using a latch or the like provided in advance on the printed circuit board.

It is a schematic front view which shows the coaxial multicore connector which concerns on this invention connected to a printed circuit board. FIG. 2 is a cross-sectional front view of the coaxial multicore connector of FIG. 1 for explaining a state immediately before being connected to the printed board. It is a cross-sectional front view of the same coaxial multi-core connector as FIG. 2 for demonstrating the state connected to the printed circuit board. It is the side view which looked at the coaxial multi-core connector of FIG. 3 which shows the state connected to the printed circuit board from the left side. It is a top view of the fixed guide previously attached to the printed circuit board for the coaxial multicore connector of FIG. FIG. 2 is a schematic bottom view of the coaxial multicore connector of FIG. 1. FIG. 7 is a schematic cross-sectional view of the second half of the housing taken along the line O3-O3 in FIG. 6, showing a state where a coaxial cable is partially connected and a contact is in contact with the printed circuit board. FIG. 8 is a partial cross-sectional view of a housing in which a coaxial cable is not connected, taken along line AA in FIG. 7, and a third lattice plate constituting a lattice structure is partially B− The state cut along the B line is shown. It is a general | schematic partial enlarged bottom view of the housing of FIG. It is a general | schematic partial enlarged top view of the housing of FIG. FIG. 8 is a partial perspective view of only the lattice structure of the housing shown in FIG. 7. It is a perspective view of the contact for signal lines which comprises a lattice structure. It is a front view of the 1st lattice board which comprises a lattice structure. It is a front view of the 2nd lattice board which comprises a lattice structure. It is a front view of the 3rd lattice board which comprises a lattice structure. It is a figure for demonstrating the contact to the printed circuit board of the contact for signal lines, and the contact for grounding, (a) shows the state just before a contact, (b) shows the state at the time of completion of contact, respectively. It is a figure for demonstrating the structure of the connection end part formed in the one end part of a coaxial cable, (a) is a front view, (b) is sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coaxial multi-core connector 10 Housing 11, 12 Lattice structure accommodation space 20 Lattice structure 30 1st grating | lattice plate 34a, 34b Stopper piece 40 2nd grating | lattice plate 43 Stopper piece 49 Grounding contact 50 3rd grating | lattice plate 60 Signal line contact 61 Center contact pins 63a, 63b Spiral groove 66 Coil spring 62 Columnar insulator 70 Slider 71 Slider lever 72 Slider body 76 Hook 80 Coaxial cable 81 Center conductor 83 External conductor (shield)
90 Fixing guide 95 Engagement pin 100 Printed circuit board

Claims (5)

In a coaxial multicore connector that can simultaneously connect multiple coaxial cables that transmit signals at high speed to the external electrodes of the printed circuit board,
At least two grid plates arranged in parallel, a plurality of grid plates arranged at right angles to the grid plates arranged in parallel, and arranged at right angles to the at least two grid plates arranged in parallel A grid structure including a plurality of grid plates to be assembled in a grid shape, and signal line contacts respectively disposed in a plurality of square cylindrical frames having a horizontal cross section square formed by
A housing that accommodates the lattice structure and is formed with an accommodation space that opens at least downward;
With
The at least two parallelly arranged lattice plates are connected to the shield of the coaxial cable housed in the rectangular tube frame, and a lower end thereof is provided with a ground contact.
The signal line contact is formed integrally with the columnar insulator so as to vertically penetrate the columnar insulator and the center of the columnar insulator and protrude from the upper and lower sides of the columnar insulator, A coaxial multi-core connector comprising a center contact pin connected to a center conductor through which a signal of the coaxial cable is transmitted.   The signal line contact is biased downward via a coil spring so that the lower end of the center contact pin protruding downward from the columnar insulator protrudes from the lower surface of the housing, and the rectangular tube shape The coaxial multicore connector according to claim 1, wherein the coaxial multicore connector is arranged in a frame so as to be movable up and down. The columnar insulator constituting the signal line contact is formed in a columnar shape, and a spiral groove is formed on the outer periphery of the columnar insulator,
The at least two lattice plates arranged in parallel are formed with stopper pieces that engage with the spiral grooves,
The coaxial multi-core connector according to claim 2, wherein the signal line contact rotates with its vertical movement.   4. The coaxial multicore connector according to claim 1, wherein the ground contact is formed to be elastically deformable. The housing further includes a slider movable in a longitudinal direction of the housing,
The slider includes a slider main body having a plurality of hooks and a slider lever for operating the slider main body.
The housing is fixed to the printed circuit board while the lower surface of the housing approaches the printed circuit board by engaging the hook of the slider with an engaging pin provided on a fixed guide that is attached in advance to the printed circuit board. The coaxial multicore connector according to claim 1, wherein the coaxial multicore connector is provided.

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