JP3455894B2 - Filter connector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter connector, and more particularly to a filter connector provided with a filter circuit such as a capacitor for each of a plurality of signal lines.

[0002]

2. Description of the Related Art A connector for connecting a wiring board on which a predetermined circuit is formed to another device, a wiring board, or a mother board is provided with a signal for preventing noise from being induced in a signal line. In many cases, a filter circuit such as a capacitor is incorporated in the line.

A typical example of a conventional connector of such a filter circuit, that is, a filter connector, is shown in FIGS. This filter connector is a feedthrough capacitor in which a dielectric 82 is formed around a predetermined length of a signal line 81 having a predetermined length with the signal line 81 as a central axis, and a ground electrode coating 83 is formed outside the dielectric 82. A plurality of 8 (only one is shown in FIG. 4 (a)),
The insulating base 6 is arranged and held and fixed, and the ground electrode coating 83 of each feedthrough capacitor 8 is soldered and connected to the ground shell 7 that covers the outside of the insulating base 6.

In this filter connector, for example, a mounting member is inserted and fixed in the slit portion of the ground shell 7 to mount the mounting member on the wiring board, and at the same time,
It is connected to the ground wiring of the wiring board, and one end of each signal line 81 is soldered to a predetermined electrode (pad) on the wiring board. The other end of the signal line 81 serves as a contact that connects to the mating connector.

[0005]

In the conventional filter connector described above, the ground electrode coating 83 of each of the plurality of feedthrough capacitors 8 arranged and held and fixed on the insulating base 6 is soldered to the ground shell 7 for connection. Since the structure is such that it is necessary to prepare feedthrough capacitors 8 for the number of signal lines, the number of parts is large and the management thereof is complicated, and soldering is required for all feedthrough capacitors 8. There is a problem that the number of assembling steps increases.

In view of the above problems of the prior art, it is an object of the present invention to provide a filter connector which can reduce the number of parts, facilitate the management thereof, and reduce the number of assembling steps.

[0007]

The present invention has the following means configuration in order to achieve the above object. That is, the structure of the present invention is a filter connector having the following constituent elements. (A) A plurality of contacts each including a mating insert contact part into which the contact of the mating connector is inserted and contact-connects with this contact, and an internal contact piece connected to one end of the mating insert contact part (b) A connector housing (c) for holding and housing the plurality of contacts by arranging internal contact pieces of the plurality of contacts on a predetermined surface, and an insulating substrate held and fixed in the connector housing, and the plurality of contacts on the insulating substrate. A terminal block including a plurality of terminals arranged so as to correspond to each of the terminals (d) A first slit is provided at a predetermined portion corresponding to the arrangement of the internal contact pieces held and fixed to the connector housing. A second slit is formed at a predetermined portion corresponding to the formed array of terminals. A flexible substrate made of an electric grounding block (e) insulating material; a plurality of first electrodes arranged on a first side of the flexible substrate in correspondence with the internal contact pieces of the plurality of contacts; A plurality of second electrodes arranged corresponding to each of the plurality of terminals on a second side opposite to the first side of the flexible substrate, and correspondingly connected to the plurality of first and second electrodes. These first and second of the flexible substrate
A plurality of filter element conductor layers provided between the electrodes of,
At least one of the first and second slits of the earth block on the first and second sides of the flexible substrate covers the entire surface of the plurality of filter element conductor layers continuously with an insulating layer interposed therebetween. A first ground side of the ground block, the first side of the flexible substrate including a solid ground layer extending to a corresponding portion to form a filter circuit together with the conductive layer of the filter element and serving as a ground electrode of the filter circuit.
Of the plurality of first electrodes are contact-connected to the inner contact pieces of the plurality of contacts, respectively, and the second side of the flexible substrate is connected to the second side of the earth block. Inserting and fixing in a slit, inserting and connecting each of the plurality of second electrodes corresponding to the slit of each of the plurality of terminals, and connecting the solid ground layer to the first and second slits of the earth block. Flexible substrate filter for contact connection with at least one of

Further, the filter element conductor layer of the flexible substrate filter is configured as a capacitive element electrode layer that forms a capacitive element together with the solid ground layer. Further, the ground blocks are provided at inner contact pieces of the plurality of contacts and at outer portions of both ends of the arrangement of the plurality of terminals of the terminal block, respectively, and the first and second sides of the flexible substrate of the flexible substrate filter are provided. The first and second of each of the earth blocks
Of the flexible substrate filter, and the solid grounding layer of the flexible substrate filter corresponds to the first and second slits of the earth block on the first and second sides of the flexible substrate, respectively. When the first and second sides of the flexible board are inserted into and fixed to the first and second slits of the earth blocks, respectively, the solid ground layer is extended to the first and second sides of the earth blocks. It is configured so as to be in contact with the slit of.

The inner contact pieces of each of the plurality of contacts are arranged on a predetermined surface of the connector housing in a plurality of rows, and the plurality of terminals of the terminal block are arranged in an inner contact piece of each of the plurality of contacts. Corresponding to the internal slits of the plurality of contacts and the plurality of rows of the plurality of terminals of the terminal block, respectively. Formed,
A plurality of the flexible substrate filters are used to connect the internal contact pieces of each of the plurality of contacts to the plurality of terminals of the terminal block, and at the same time, a solid ground layer of the plurality of flexible substrate filters is connected to the ground block. Configured to connect.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In one embodiment of the present invention, an internal contact piece is provided for each of a plurality of contacts, and these internal contact pieces are arranged on a predetermined surface of a connector housing, and an insulating member fixed to the connector housing is provided. A plurality of terminals are arranged on the substrate in correspondence with the plurality of contacts, a first slit is fixed to the connector housing at a predetermined portion corresponding to the arrangement of the internal contact pieces, and an arrangement of the plurality of terminals is provided. A plurality of ground blocks made of a conductor having second slits formed at corresponding portions, and arranged on the first side of the flexible substrate made of an insulating material so as to correspond to the internal contact pieces of each of the plurality of contacts. First of
And a plurality of second electrodes arranged on the second side opposite to the first side so as to correspond to each of the plurality of terminals.
And a plurality of filter element conductor layers provided correspondingly to the first and second electrodes and provided between the first and second electrodes, and insulating the plurality of filter element conductor layers. With the filter element conductor layer continuously covering the layers and extending to a portion corresponding to at least one of the first and second slits of the earth block on the first and second sides of the flexible substrate. The first side of the flexible substrate of the flexible substrate filter on which the filter element is formed and at the same time a solid ground layer which becomes the ground electrode thereof is formed into the first slit of the earth block,
The second side is inserted into and fixed to the second slit, and at the same time, the internal contact pieces of each of the plurality of contacts are correspondingly connected to the plurality of first electrodes to connect the plurality of terminals to the plurality of terminals. It has a structure in which a plurality of second electrodes are correspondingly contact-connected and the solid ground layer is connected to the earth block.

With such a structure, the filter circuit, for example, the capacitive element, which is inserted into each signal transmission path including the corresponding contact and terminal, is accommodated in one flexible substrate, so that the number of parts is greatly increased. The filter circuit is inserted and connected between the contact terminals and the solid ground layer is connected to the earth block simply by inserting and fixing the flexible substrate filter in the slit of the earth block. As a result, the number of assembling steps can be significantly reduced.

[0012]

Embodiments of the present invention will now be described with reference to the drawings. 1 (a) and 1 (b) are a perspective view before mounting a flexible substrate filter and a perspective view of a mounting state on a wiring substrate after mounting a flexible substrate filter according to an embodiment of the present invention, and FIG. Example exploded perspective view, FIG.
(A)-(c) are an exploded perspective view, a perspective view and a sectional view of a completed state of the flexible substrate filter of this embodiment.

In this embodiment, a plurality of contacts 1, a connector housing 2 for accommodating and holding the plurality of contacts 1, and a terminal block 4 including a plurality of terminals 42 arranged in correspondence with each of the plurality of contacts 1 are provided. , A plurality of contacts 1 and a plurality of terminals 42
The flexible substrate filter 5 is connected to the other through a filter circuit, and the earth block 3 is fixed to the flexible substrate filter 5 and at the same time connected to the solid ground layer of the flexible substrate filter 5 to form a ground circuit.

Each of the plurality of contacts 1 is composed of a mating insertion contact portion 11 into which a contact of a mating connector is inserted to make contact with the contact, and a mating contact insertion side of the mating insertion contact portion 11. Internal contact pieces of each of the plurality of contacts 1 are formed on the back surface of the connector housing 2 including the mating connector fitting portion 21 and the inner contact piece 12 connected to the opposite end. 12 are arranged in two rows so as to form two surfaces different from each other, and the plurality of contacts 1 are held and housed in the connector housing 2.

The terminal block 4 comprises an insulating substrate 41 held and fixed to the connector housing 2 and a plurality of terminals 42 arranged in two rows corresponding to the internal contact pieces 12 of each of the plurality of contacts 1. Each of the terminals 42 is provided with a slit 421.

At the outer portion of the arrangement of the inner contact pieces 12 of each of the plurality of contacts 1 and the outer portions at both ends of the arrangement of the terminals 42 of the terminal block 4, a ground made of a conductor is fixed to the connector housing 2 by mounting screws 35. Blocks 3 are provided, and these earth blocks 3 are provided with slits 31a at positions corresponding to the two rows of the internal contact pieces 12, respectively.
Slits 31b are formed at positions corresponding to the respective row arrangements.

The flexible substrate filter 5 comprises a flexible substrate 51 made of an insulating material, and the flexible substrate 5
A first electrode 52a corresponding to each of the internal contact pieces 12 of one of the two rows of the internal contact pieces 12 of the plurality of contacts 1 formed on the first side of the first flexible substrate 51; A second electrode 52b which is formed on a second side opposite to the side and corresponds to each one terminal of the two-row arrangement of a plurality of terminals, and these first and second electrodes 52a and 52b. Correspondingly connected, these first and second electrodes 52a, 52b of the flexible substrate 51
The plurality of capacitive element electrode layers 53 provided therebetween and the entire upper surface of the plurality of capacitive element electrode layers 53 are continuously covered with the insulating adhesive layer 55, and the first and second sides of the flexible substrate 51 are covered. First and second slits 3 of the earth block 3
A solid ground layer 54 extending to a portion corresponding to 1a and 31b
It is formed including and. The flexible substrate filter 5 is provided for each of one of the two rows of the internal contact piece 12 and the terminal 42, for example, the inside and the other, for example, the outside.

Then, the first side (on the side of the first electrode 52a) of each of these two flexible substrate filters 5 is inserted into and fixed to the first slit 31a of the earth block 3 so as to fix a plurality of contacts. 1. Each of the internal contact pieces 12 is contact-connected corresponding to the first electrode 52a of the flexible substrate filter 5, and the second side (second electrode 52b side) is connected to the second slit 31b of the earth block 3. Correspondingly inserted and fixed at the same time as terminal 4
By inserting into the slits 421 of the second, the plurality of terminals 42 are connected to the second side of the flexible substrate filter 5.
Corresponding to the electrode 52b. At the same time, the solid ground layer 54 of the flexible substrate filter 5 is
The slits 31a and 31b are connected to the ground block 3.

The second electrode 52b on the terminal 42 side
Is inserted into the slit 421 of the terminal 42 to connect them, so that the first electrode 5 on the inner contact piece 12 side is connected.
2a is, for example, the inner contact piece 12 and the connector housing 2
When sandwiched between the first electrode 52 and
It is possible to eliminate a contact failure between a and the internal contact piece 12.

The filter connector of this embodiment is shown in FIG.
As shown in (b), the ground block 3 is mounted on the wiring board 100 by screwing the ground block 3 from the back side of the wiring board 100 with mounting screws (not shown), and at the same time, the ground block 3 is grounded on the wiring board 100 (not shown). ) (The terminal 42 is connected to a pad or the like of the wiring board 100). As a result, the solid ground layer 54 of the flexible substrate filter 5 is connected to the ground wiring of the wiring substrate 100, and the one-pole ground type capacitor circuit is provided between the capacitive element electrode layer 53 of the flexible substrate filter 5 and the solid ground layer 54. The (filter circuit) is completed. The capacitance element electrode layer 53 is not limited to this, and may be an inductance element layer of another filter circuit, for example, a circuit including an inductance element and a distributed capacitance element.

In this embodiment, a plurality of capacitive elements (filter circuits) are housed in each flexible substrate filter 5 in a state in which they are already formed. Therefore, the number of parts can be greatly reduced as compared with the conventional example. It is possible to manage it easily. In addition, the flexible substrate filter 5 is connected to the slits 31a of the earth block 3,
A filter circuit by a capacitive element is inserted and connected between the contact 1 and the terminal 42 only by inserting and fixing it in 31b or the like, and the ground side electrode (solid ground layer 54) of the capacitive element is connected to the ground block 3 without soldering. Since it is grounded and grounded, the number of assembling steps can be significantly reduced compared to the conventional example.

Although the internal contact pieces 12 and the terminals 42 are arranged in two rows in this embodiment, they may be arranged in one row and one flexible substrate filter 5 may be used. You may make it arrange | position in a row or more and use three or more flexible substrate filters 5. However, there is a limit to the number in terms of management and structure.

Further, although the slit 421 is provided in the terminal 42 and the flexible substrate filter 5 is inserted and fixed, the flexible substrate filter 5 may be sandwiched by another object. Further, the solid ground layer 54 is connected to each of the slits 31a and 31b of the ground block 3, but it may be connected to the ground block 3 at at least one place, and the number of ground blocks 3 is two. Not limited to one,
It may be three or the like.

[0024]

As described above, according to the present invention, an internal contact piece is provided for each of a plurality of contacts connected to a mating connector, and a flexible board is provided between a plurality of terminals connected to a circuit of a mounting board. A flexible substrate filter having a filter element conductor layer inserted between each of these plurality of contacts and terminals and a solid ground layer continuously covering the entire surface of the filter element conductor layer with an insulating layer interposed By connecting by inserting and fixing in the slit, at the same time, by connecting the solid ground layer to this ground block,
Since a plurality of filter element circuits are stored in the flexible substrate filter in a state where they are already formed, it is possible to significantly reduce the number of parts and to manage them easily. Since the filter circuit between the contact terminals can be inserted and the ground electrode thereof can be grounded simply by inserting and fixing it in, the number of assembly steps can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention before a flexible substrate filter is attached and a perspective view of a mounting state on a wiring board after the flexible substrate filter is attached.

FIG. 2 is an exploded perspective view of the embodiment shown in FIG.

3A and 3B are an exploded perspective view, an overall perspective view, and a sectional view of the flexible substrate filter of the embodiment shown in FIG.

FIG. 4 is a sectional view showing an example of a conventional filter connector and a sectional view of a feedthrough capacitor used.

[Explanation of symbols]

1 contact 2 Connector housing 3 earth block 4 terminal blocks 5 Flexible substrate filter 6 insulation base 7 Grand shell 8 feedthrough capacitors 9 Soldering part 11 Opposite side insertion contact part 12 Internal contact piece 31a, 31b slits 41 insulating substrate 42 terminal 51 Flexible substrate 52a, 52b electrodes 53 Capacitive element electrode layer 54 Solid Ground Layer 55 Insulating adhesive layer

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H01R 13/719 H01R 13/648

Claims (5)

(57) [Claims] 1. A filter connector having the following components. (A) A plurality of contacts each including a mating insert contact part into which the contact of the mating connector is inserted and contact-connects with this contact, and an internal contact piece connected to one end of the mating insert contact part (b) A connector housing (c) for holding and housing the plurality of contacts by arranging internal contact pieces of the plurality of contacts on a predetermined surface, and an insulating substrate held and fixed in the connector housing, and the plurality of contacts on the insulating substrate. A terminal block including a plurality of terminals arranged so as to correspond to each of the terminals (d) A first slit is provided at a predetermined portion corresponding to the arrangement of the internal contact pieces held and fixed to the connector housing. A second slit is formed at a predetermined portion corresponding to the formed array of terminals. A flexible substrate made of an electric grounding block (e) insulating material; a plurality of first electrodes arranged on a first side of the flexible substrate in correspondence with the internal contact pieces of the plurality of contacts; A plurality of second electrodes arranged corresponding to each of the plurality of terminals on a second side opposite to the first side of the flexible substrate, and correspondingly connected to the plurality of first and second electrodes. These first and second of the flexible substrate
A plurality of filter element conductor layers provided between the electrodes of,
At least one of the first and second slits of the earth block on the first and second sides of the flexible substrate covers the entire surface of the plurality of filter element conductor layers continuously with an insulating layer interposed therebetween. A first ground side of the ground block, the first side of the flexible substrate including a solid ground layer extending to a corresponding portion to form a filter circuit together with the conductive layer of the filter element and serving as a ground electrode of the filter circuit.
Of the plurality of first electrodes are contact-connected to the inner contact pieces of the plurality of contacts, respectively, and the second side of the flexible substrate is connected to the second side of the earth block. Inserting and fixing in a slit, inserting and connecting each of the plurality of second electrodes corresponding to the slit of each of the plurality of terminals, and connecting the solid ground layer to the first and second slits of the earth block. Flexible substrate filter for contact connection with at least one of 2. The filter connector according to claim 1, wherein the filter element conductor layer of the flexible substrate filter is a capacitive element electrode layer which forms a capacitive element together with the solid ground layer. 3. The ground block is provided at each of internal contact pieces of each of the plurality of contacts and at outer portions of both ends of an array of a plurality of terminals of the terminal block, and the first and second flexible substrates of the flexible substrate filter are provided. The filter connector according to claim 1, wherein the two sides are inserted into and fixed to the first and second slits of each of the ground blocks. 4. The solid ground layer of the flexible substrate filter is extended to portions corresponding to the first and second slits of the earth block on the first and second sides of the flexible substrate, respectively, First
And the second side is inserted into and fixed to the first and second slits of the earth block, respectively, so that the solid ground layer makes contact with the first and second slits of the earth block. Item 3. The filter connector according to Item 3. 5. The inner contact pieces of each of the plurality of contacts are arranged in a plurality of rows on a predetermined surface of the connector housing, and the plurality of terminals of the terminal block are arranged in an inner contact piece of each of the plurality of contacts. Corresponding to the internal slits of the plurality of contacts and the plurality of rows of the plurality of terminals of the terminal block, respectively. Forming a plurality of flexible substrate filters, connecting the internal contact piece of each of the plurality of contacts and the plurality of terminals of the terminal block, and simultaneously forming a solid ground layer of the plurality of flexible substrate filters. The filter connector according to claim 1, wherein the filter connector is connected to an earth block.