JP2505310Y2 - Connector structure for coaxial ribbon cable - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector structure for a coaxial ribbon cable.

[0002]

2. Description of the Related Art Conventionally, in the exchange of signals between general communication equipment and data transmission equipment, the higher the speed of the signals, the more difficult the impedance matching of the connector and the occurrence of crosstalk. There is a fear. As a connector used for transmitting a relatively slow high-speed signal (up to 100 MHz), there is a coaxial ribbon cable connector (multicore) in which coaxial ribbon cables are connected by pressure welding, soldering, welding, or the like (special feature). Hei 3-48631). In addition, relatively fast high-speed signals (300 MHz ~)
In the connector used for transmission of
I am trying to connect the bulls individually.

[0003]

However, when handling medium-speed high-speed signals (100 to 500 MHz), the former coaxial ribbon cable connector has difficulty in impedance matching, crosstalk, and the like. It cannot be used due to fear of occurrence. Further, in the latter case, if each coaxial cable is individually connected and used, the cost is high, and in the case of multiple signals, the board space occupied by the connector becomes large. There was a point.

The present invention has been made in view of the above problems, and its purpose is to improve impedance matching at the time of coupling and to generate crosstalk between signals. Not only can this be prevented, but the grounding of the drain wire of the coaxial ribbon cable can be easily done,
An object of the present invention is to provide a connector structure for a coaxial ribbon cable which can improve the workability of connector assembly.

[0005]

In order to achieve the above object, the present invention has an arrangement in which the positional relationship between the ground member of the cable side connector and the ground side member of the board side connector surrounds the four sides of the signal terminal when both connectors are connected. Then, attach the cable side ground member to the insulating case of the cable side connector, and position it in the direction perpendicular to the cable side ground member at the bottom of the mating recess of the insulating case of the board side connector. Then, the board-side ground member is arranged, and at the bottom of the fitting recess of the insulating case, the second ground terminal that comes into contact with the cable-side ground member when the two connectors are connected is mounted, and the board-side ground member is attached. It is characterized in that a first ground terminal which is in contact with and is in contact with a side edge portion of the cable side ground member when the both connectors are coupled is mounted.

[0006]

With this structure, when the cable side connector is connected to the board side connector, the cable side ground member comes into contact with the contact piece of the second ground terminal of the board side connector, and also the cable side. When the first ground terminal of the board-side connector contacts the side edge of the ground member,
The ground member on the cable side is dropped to the ground, and the drain wire of the coaxial ribbon cable connected to the ground member on the cable side can be dropped to the ground. Can be improved. Moreover, when the cable side connector is connected to the board side connector, the signal terminals are surrounded on four sides by the ground member and the ground terminal.
Impedance matching at the time of combining is improved, and crosstalk between signals can be prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a coaxial ribbon cable connector structure according to the present invention before coupling, FIG. 2 is a sectional view of the coaxial ribbon cable connector structure after coupling, and FIG. 3 is a plan view of a board-side connector. Is.

The coaxial ribbon cable connector structure is a cable
It is composed of a bull side connector 1 and a board side connector 2. The cable side connector 1 includes an insulating case 3, a guide block 16, a front side, a rear side cover 23 and 34, and a cable.
It is provided with a ground terminal 35 which is a bull side ground member, a signal terminal 41, a pressure contact terminal 45, and a spacer 49.

The insulating case 3 is shown in FIGS. A fitting concave portion 4 is formed on a lower surface portion 3a of the insulating case 3, and a convex strip portion 5 is formed on a bottom surface 4a of the fitting concave portion 4 so as to be located at a central portion and extending in the left-right direction. A recess 6 is formed on the upper surface 3b of the insulating case 3, and a protrusion 7 extending in the left-right direction is formed at the center of the recess 6. Both end portions of the left and right wall portions 6a, 6 of the recess 6 are
b. The insulating case 3 has a plurality of slit-shaped ground terminal insertion holes 8 penetrating from the recess 6 to the bottom surface 4a of the fitting recess 4 at predetermined intervals in the left-right direction. By the ground terminal insertion hole 8 of FIG.
Portion 9 of ridge 5 sandwiched by ground terminal insertion hole 8
A columnar body 10 is provided so as to project in point symmetry on the
The one end surface 10a of 0 is located on the extension of the ground terminal insertion hole 8, and in the portion 9, the columnar bodies 10 arranged symmetrically with respect to a point form a space 11 having a plane Z shape. Further, terminal holes 12 are formed on the outer surface of the columnar body 10, and these terminal holes 12 are cut out into the recesses 6 of the upper surface portion 3b of the insulating case 3. Further, guide grooves 13 are formed on the left and right side surfaces 3c and 3d of the insulating case 3, and engagement protrusions 14 project from these guide grooves 13.
Further, on the front surface 3e of the insulating case 3, lock holes 15 are formed on the left and right.

The guide block 16 is shown in FIGS. This guide block 16 is an insulating block body 17
And the inner surface 17a of the insulating block body 17
A plurality of signal line insertion portions 18 are formed at predetermined intervals in the left-right direction, and a terminal insertion portion 21 is formed on the inner surface 17a so as to overlap the signal line insertion portions 18. A plurality of projections 19 are formed on the upper surface 17b of the insulating block body 17 at predetermined intervals in the left-right direction, and a drain line insertion groove 20 is formed on the upper surface of these projections 19.
Is formed, and the pressure contact terminal insertion portion 2 is formed on the upper surface of the convex portion 19.
2 is formed. Also, the lower surface 17 of the block body 17
In c, a ground terminal insertion groove 20a is formed at a predetermined interval in the left-right direction.

The front cover 23 is shown in FIGS. The front cover 23 is provided with a cover main body 24, and the left surface portion 24a of the cover main body 24 is provided with a vertical engaging leg 25 protruding downward and a horizontal engaging leg 32 protruding rearward, respectively. Engaging protrusions 26 and 33 facing inward are formed at the tips of the engaging legs 25 and 32. In addition, a guide groove 27 is formed along the front-rear direction (from the front to the back) on the right surface portion 24b of the cover body 24,
An engagement projection 28 is formed in the guide groove 27. Also,
The cable insertion portion 29 is provided on the back surface portion 24c of the cover body 24.
And a spacer insertion portion 30 are formed, and the spacer is formed.
The engaging protrusions 3 are provided on the left and right surface portions 30a and 30b of the insertion portion 30.
1 is formed.

As shown in FIG. 20, the rear cover 34 has a shape symmetrical with the front cover 23, and the same parts as those of the front cover 23 are designated by the same reference numerals for the description. Omit it.

The ground terminal 35 is shown in FIGS. The ground terminal 35 has a wide upper portion. The wide portion 36 has a block insertion portion 37 formed by notches on the left and right sides. The block insertion portion 37 forms a single portion 38. These pieces 38 are slightly bent at the intermediate portion to provide resilience, and a press contact terminal contact portion 39 is formed at the tip of the piece 38 by bending. Also, the ground terminal 35
In the center of the lower edge, an insertion portion 40 formed of a cut is formed.

The signal terminal 41 is shown in FIGS.
The signal terminal 41 includes a contact portion 42, a press-fit portion 43, and a press-contact portion 4
4, and the press contact portion 44 is bent at a right angle to the press-fit portion 43.

FIG. 27 shows the press contact terminal 45. The press contact terminal 45 is formed by connecting a plurality of terminal portions 46 with a connecting portion 47,
An outer edge of one outer terminal portion 46 is formed as a ground terminal contact portion 48.

Spacer 49 is shown in FIGS. The spacer 49 is provided with a wedge-shaped body 50 at an intermediate portion thereof, and lock pieces 51 are provided on the left and right sides of the wedge-shaped body 50. The protrusion 51a is formed.

As shown in FIG. 31, the coaxial ribbon cable 52 includes a signal wire 55 and a drain wire 56, each of which is composed of a central conductor 54 covered with a dielectric material 53, wrapped in a metal foil shield 57 together. Of the shielded electric wire 58, and a plurality of the shielded electric wires 58 are arranged side by side and covered with a jacket 59.

Then, the press-fitting portion 43 and the contact portion 42 of the signal terminal 41 are inserted into the terminal holes 12 of the insulating case 3,
The contact portion 42 is located in the terminal groove 12 of the columnar body 10, and the press-fitting portion 43 is press-fitted in the terminal hole 12. Also, the insulation case 3
The ground terminals 35 are inserted into the ground terminal insertion holes 8 of the above, and the lower portions of these ground terminals 35 are the fitting recesses 4
The ground terminal 35 is inserted into each signal terminal 41.
Are isolated from each other.

When the coaxial ribbon cable 52 is connected to the insulating case 3 constructed as described above, two coaxial ribbon cables 52 are prepared and these coaxial ribbon cables 52 are prepared.
The jacket 59 at the end of the bull 52 is cut off, the metal foil shield 57 is peeled off, the signal line 55 and the drain line 56 are exposed, and the drain line 56 is bent at a right angle. Then, the signal line 55 is positioned in front of the pressure contact portion 44 of the signal terminal 41 already attached to the insulating case 3, and the signal line 55 is inserted into the signal line insertion portion 18 of the guide block 16, and The ground wire 56 is inserted into the drain wire insertion groove 20 of the guide block 16, the guide block 16 is positioned in the recess 6 of the insulating case 3, and the insulating case 3 is moved to the guide block 16 side. These guide blocks 1
6 is pressed inward, the press contact portion 44 of the signal terminal 41 is inserted into the terminal insertion portion 21 of the guide block 16, and the signal wire 55 is pressed by the press contact portion 44. Next, the press contact terminal 45 is inserted into the press contact terminal insertion portion 22 to press the drain wire 56 into contact, and the press contact terminal contact portion 39 of the ground terminal 35 contacts the ground terminal contact portion 48 of the press contact terminal 45. Therefore, the signal line 55 of the coaxial ribbon cable 52 is connected to the signal terminal 41 by pressure contact, and the drain line 56 is connected to the ground terminal 35 via the pressure contact terminal 45.

Next, the front cover is provided on top of the insulating case 3.
23 and the back cover 34 are attached. That is,
While inserting the two coaxial ribbon cables 52 between the front cover 23 and the rear cover 34, the lateral engagement leg 32 of the front cover 23 is inserted into the guide groove 27 of the rear cover 34. The lateral engagement legs 32 of the rear cover 34 are inserted into the guide grooves 27 of the front cover 23 so that the engagement protrusions 33 of the respective lateral engagement legs 32 engage the engagement protrusions 28 of the guide groove 27. The two covers 23, 34 are joined together. Next, the longitudinal engagement leg 25 of the front cover 23 is attached to the guide groove 13 of the insulating case 3.
And the vertical engaging legs 25 of the back cover 34 are inserted into the guide grooves 13 of the insulating case 3 so that the engaging protrusions 26 of the respective vertical engaging legs 25 are inserted into the engaging protrusions 14 of the guide groove 13. Engage to bond both covers 23, 34 to the insulating case 3. In this state, the front side coaxial ribbon cable 52 is in the cable insertion portion 29 of the front side cable 23, and the rear side coaxial ribbon cable 52 is in the cable insertion portion 29 of the rear side cable 34. Coaxial ribbon cable 5
A space composed of the spacer insertion portion 30 is formed between the two.
Spacers 35 are inserted into this space to fix the coaxial ribbon cables 52 in the respective cable insertion portions 29, and the engaging projections 51a of the lock pieces 51 of the spacers 49 are inserted into the spacers. The cable side connector 2 is constructed by engaging the engaging projections 31 of the insertion portion 30 and fixing the spacer 49.

The board-side connector 2 is an insulating case 60.
And a ground plate 71 serving as a board-side ground member, a first ground terminal 74, a second ground terminal 78, and a signal terminal 86.

As shown in FIGS. 32 to 36, the insulating case 60 is provided with a base portion 61 and a fitting portion 62 formed on the base portion 61, and the inside of the fitting portion 62 is fitted. It is formed as a mating recess 63. A plurality of vertical grooves 65 are provided on the bottom 64 of the fitting recess 63 at predetermined intervals in the left-right direction.
In FIG. 4, a plurality of horizontal grooves 66 are formed at predetermined intervals in the vertical direction, and a terminal hole 67 is formed at a position excluding a portion of the horizontal groove 66 intersecting the vertical groove 65. Therefore, the bottom 64 has a plurality of sections 68 formed by the vertical grooves 65 and the horizontal grooves 66, and a terminal hole 69 is formed in each section 68. A set of three terminal holes 70 is formed on both sides of the bottom 64 in the left-right direction with the terminal hole 70 at the center positioned on the end side of the vertical groove.

As shown in FIG. 37, the ground plate 71 is formed by forming a plurality of piece portions 72a by forming longitudinally long holes 73 at predetermined intervals in the left-right direction on a flat rectangular metal plate 72. It is.

Further, the first ground terminal 74 is shown in FIG.
As shown in FIG. 8 and FIG. 39, a plurality of contact portions 75, press-fit portions 76, and leg portions 77 are provided, and the contact portions 75 are bent in a substantially U-shaped side surface.

Further, the second ground terminal 78 is
0 to 42, a terminal body 82 is provided,
The terminal body 82 includes a plurality of contact portions 79, a press-fit portion 80, and a leg portion 81. The contact portions 79 are provided on the left and right sides of the support piece 83 formed on the upper portion of the terminal body 82.
4 and 85, the left contact piece 84 and the right contact piece 8
5 is bent in the opposite direction, and adjacent contact pieces 84, 85
Are positioned between the support pieces 83.

The signal terminal 86 has a contact portion 87, a press-fit portion 88, and a leg portion 89 as shown in FIGS. 43 to 45. is there.

Then, the fitting recess 6 of the insulating case 60 is formed.
In the lateral grooves 66 on the outer side of the bottom portion 64 of No. 3, the ground plate 7 is provided from the back side of the insulating case 60 to the terminal hole portions 67 of these lateral grooves 66.
The one piece 72a is inserted and the ground plate 71 is mounted, and these pieces 72a protrude into the fitting recess 63. In addition, the first ground terminal 74 is press-fitted and mounted in the terminal hole 70 of the bottom portion 64 by the press-fitting portion 76, and the contact portion 75 of these first ground terminals 74 is the one portion 72a of the ground plate 71. It is inserted in between and protrudes inward of the ground plate 71. In addition, the second ground terminal 7
8, the press-fitting portion 80 corresponds to the terminal hole portion 6 of the lateral groove 66 in the center.
It is press-fitted in 7 and attached to the bottom 64, and the contact piece 8 of this
The mating portion of Nos. 4 and 85 is located right above the vertical groove 65. Further, the signal terminal 86 has its press-fitting portion 88 press-fitted into the terminal hole 69 and mounted on the bottom portion 64, and these constitute the board-side connector 2.

Next, the connection between the cable side connector 1 and the board side connector 2 will be described. The board-side connector 2 is mounted by soldering the legs 77, 81, 89 of the terminals 74, 78, 86 into the through holes (not shown) of the board (not shown) and soldering. There is. Then, the fitting portion 62 of the board-side connector 2 is fitted into the fitting concave portion 4 of the cable-side connector 1 to join the two connectors 1 and 2. In this case, the ground terminal 35 of the cable-side connector 1 contacts the contact pieces 84 and 85 of the contact portion 79 of the second ground terminal 78 of the board-side connector 2, and the side edge portion 35a of the ground terminal 35 contacts the board-side. First ground terminal 74 of connector 2
Of the ground terminal 35 is inserted into the vertical groove 65 of the board-side connector 2. At the same time, the contact portion 42 of the signal terminal 41 of the cable side connector 1
Contacts the contact portion 87 of the signal terminal 86 of the board-side connector 2.

As described above, when the cable side connector 1 is connected to the board side connector 2, the ground terminal 35 of the cable side connector 1 is in contact with the second ground terminal 78 of the board side connector 2. Contacting the contact pieces 84, 85 of the ground terminal 35, and contacting the side edge portion 35a of the ground terminal 35 with the contact portion 75 of the first ground terminal 74 of the board-side connector 2, the ground terminal 35 is dropped to the ground. The drain wire 56 of the coaxial ribbon cable 52 electrically connected to the ground terminals 35 is dropped to the ground.
Further, since the signal terminal 41 of the cable-side connector 1 contacts the contact portion 87 of the signal terminal 86 of the board-side connector 2, both signal terminals 41 and 86 are conducted, and the information on the signal line 55 is transferred to the board side. Is transmitted.

In this case, the section 6 of the board-side connector 2 is
8 and the signal terminal 86 arranged in
The signal terminal 41 of the cable-side connector 1 that is in contact with is placed in a state of being surrounded on four sides by the ground terminals 35, 74, 78 and the ground plate 71, so that the impedance matching at the time of coupling is improved, and the signal Since the terminals 86 (41) are isolated by the ground terminals 34, 74, 78, the occurrence of crosstalk between signals can be prevented.

According to the above embodiment, when the cable side connector 1 is coupled to the board side connector 2, the ground terminal 35 contacts the contact pieces 84 and 85 of the second ground terminal 78 of the board side connector 2. Further, when the first ground terminal 74 of the board-side connector 2 contacts the side edge portion of the ground terminal 35, the ground terminal 35 is dropped to the ground, and the coaxial ribbon cable 52 is electrically connected to these ground terminals 35. The drain wire 56 can be dropped to the ground, which can be easily dropped and the workability of assembling the connector can be improved.

[0032]

As described above, according to the present invention, the positional relationship between the cable-side connector and the ground member of the board-side connector is such that the signal terminals are surrounded by four sides when the two connectors are connected to each other. Attach the cable side ground member to the insulation case of the board, and position the board side ground member at the bottom of the mating recess of the board side connector insulation case in a direction perpendicular to the cable side ground member. A second ground terminal that contacts the cable-side ground member when the two connectors are connected is attached to the bottom of the fitting recess of the insulating case, and the second ground terminal contacts the board-side ground member and connects both connectors. Since the first ground terminal that comes into contact with the side edge of the cable-side ground member is sometimes attached, when the cable-side connector is connected to the board-side connector, the cable-side ground member is connected to the board-side connector. Of the second contact with the contact pieces of the ground terminal, also Ke - by first ground terminal of the board side connector is in contact with the side edges of the table-side ground member, Ke -
The ground member on the cable side is dropped to the ground, and the drain wire of the coaxial ribbon cable connected to the ground member on the cable side can be dropped to the ground. Can be improved. Moreover, when the cable side connector is connected to the board side connector, the signal terminals are surrounded on four sides by the ground member and the ground terminal.
Impedance matching at the time of combining is improved, and crosstalk between signals can be prevented.

[Brief description of drawings]

FIG. 1 is a sectional view of a coaxial ribbon cable connector structure according to the present invention in a state before connection.

FIG. 2 is a sectional view of the coaxial ribbon cable connector structure in a state after coupling.

FIG. 3 is a plan view of a board-side connector.

FIG. 4 is a plan view of an insulating case of a cable side connector.

FIG. 5 is a view as seen from the direction of the arrow in FIG. 4A.

FIG. 6 is a view from the direction of the arrow in FIG. 4B.

FIG. 7 is an arrow view from the direction of FIG. 4D.

FIG. 8 is an enlarged view of a part shown in FIG. 5E.

FIG. 9 is a sectional view taken along the line 8F-F in FIG. 8;

FIG. 10 is a sectional view taken along the line G-G in FIG. 5;

FIG. 11 is a rear view of the guide block.

FIG. 12 is a view as seen from the direction of the arrow in FIG. 11H.

13 is a view as seen from the direction of the arrow in FIG. 11I.

FIG. 14 is a sectional view taken along the line JJ of FIG. 12;

FIG. 15 is a sectional view taken along the line KK of FIG.

FIG. 16 is a front view of the front cover.

17 is a view as seen from the direction of the arrow in FIG. 16L.

FIG. 18 is a view from the direction of FIG. 16M.

19 is a view as seen from the direction of the arrow N in FIG. 17;

FIG. 20 is a plan view showing a state in which a front cover and a rear cover are combined.

FIG. 21 is a front view of a ground terminal.

FIG. 22 is a view as seen from the direction of the arrow in FIG. 21O.

FIG. 23 is a view as seen from the direction of arrows in FIG. 21P.

FIG. 24 is a front view of a signal terminal.

FIG. 25 is an arrow view from the direction of FIG. 24Q.

FIG. 26 is an arrow view from the direction of FIG. 24R.

FIG. 27 is a front view of the press contact terminal.

FIG. 28 is a front view of the spacer.

FIG. 29 is an arrow view from the direction of FIG. 28S.

FIG. 30 is an arrow view from the direction of FIG. 28T.

FIG. 31 is a perspective view of a coaxial ribbon cable.

FIG. 32 is a front view of the insulating case of the board-side connector.

FIG. 33 is a view as seen in the direction of the arrow in FIG. 32U.

FIG. 34 is a view as viewed in the direction of the arrow in FIG. 32V.

FIG. 35 is an enlarged view of a portion W in FIG. 33;

FIG. 36 is a sectional view taken along the line XX of FIG. 35;

FIG. 37 is a front view of a ground plate.

FIG. 38 is a front view of a first ground terminal.

FIG. 39 is a side view of the same.

FIG. 40 is a front view of a second ground terminal.

41 is a view as seen from the Y direction in FIG. 40.

FIG. 42 is a view on arrow from the direction of FIG. 40Z.

FIG. 43 is a front view of a signal terminal.

FIG. 44 is a plan view of the same.

FIG. 45 is a side view of the same.

[Explanation of symbols]

 1 Cable side connector 2 Board side connector 16 Guide block 22 Pressure contact terminal insertion part 35 Ground terminal (cable side ground member) 41 Signal terminal 39 Pressure contact terminal contact part 45 Pressure contact terminal 48 Ground terminal contact part 52 Coaxial ribbon cable 56 drain wire 71 ground plate (board side ground member) 74 first ground terminal 78 second ground terminal 86 signal terminal

Claims (1)

(57) [Scope of utility model registration request] 1. A positional relationship between a ground member of a cable side connector and a ground member of a board side connector is arranged so as to surround four sides of a signal terminal when the two connectors are connected to each other, and the cable side is connected to an insulating case of the cable side connector. Attach the ground member, place the board-side ground member at the bottom of the fitting recess of the board-side connector's insulating case in a direction perpendicular to the cable-side ground member, and fit the insulation case. A second ground terminal, which contacts the cable-side ground member when the two connectors are coupled, is mounted on the bottom of the recess, and also contacts the board-side ground member and the side edge of the cable-side ground member when the two connectors are coupled. A connector structure for a coaxial ribbon cable, characterized in that a first ground terminal that comes into contact with the portion is attached.