JPS6310481A - Capacitor-contained electric connector and manufacture thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is used in highly sensitive communication equipment, measuring instruments, etc., to prevent the intrusion of interference radio waves from the outside and the radiation of unnecessary radio waves generated inside the communication equipment and measuring equipment. The present invention relates to a removable electrical connector containing a capacitor and a method for manufacturing the same.

Conventional technology Conventionally, this type of capacitor-containing electrical connector was
There is one disclosed in Utility Model Publication No. 10-6629. In this conventional capacitor-containing electrical connector, a through-type capacitor is soldered to a through-hole in a ground plate to form a capacitor block, and it is easy to incorporate into or remove from a connector housing, and it can be easily attached to a connector case by soldering. It is not necessary and is quite useful. In addition, as another conventional type of electrical connector with a capacitor of this type,
In these conventional capacitor-containing electrical connectors, the capacitor block is connected to one side of the dielectric plate. Capacitors can be incorporated into connectors by providing separate isolated capacitor electrodes on one surface and a common capacitor electrode on other surfaces. This is because the capacitor for each contact can be formed smaller than the above-mentioned arrangement with a feedthrough capacitor, and therefore the arrangement pitch of the contacts of the connector can be made smaller.
It's advantageous.

Problems to be Solved by the Invention First of all, the conventional capacitor-containing electrical connector provided with the above-mentioned feedthrough capacitor has the following problems.

(1) Since a large number of feedthrough capacitors are attached to the ground plate by soldering, there is a limit to miniaturization of the connector, and furthermore, it is extremely difficult to attach a large number of feedthrough capacitors in multiple rows.

(2) Recently, there has been a particular demand for a small pitch of about 1 mm for the arrangement pitch of the contacts, but this requirement cannot be met because the feedthrough capacitor itself cannot be made that small in size for the type to which this feedthrough capacitor is attached. could not be fulfilled.

(3) The work of attaching and soldering the feedthrough capacitor to the ground plate must be done manually (because automation was not possible, mass production was not possible, resulting in high costs, and Due to the work involved, the quality varied and reliability was lacking.

(4) In a feedthrough capacitor, the center electrode is fixed to the male contact by soldering, and the outer electrode must be fixed to the ground plate by soldering. Sometimes the body deteriorated or was destroyed.

Next, the above-mentioned type that incorporates a capacitor with a common capacitor electrode and separate separated capacitor electrodes is more suitable for miniaturization than the above-mentioned type that incorporates a feed-through capacitor. Since the electrode and each contact are fixed by soldering,
Not only is the soldering process unavoidably complicated, but the heat of the soldering tends to cause deterioration or destruction of the dielectric.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electrical connector containing a capacitor and a method for manufacturing the same, which can solve these conventional problems.

Means for Solving the Problems According to the present invention, in a capacitor-containing electrical connector in which a capacitor block is coupled within an insulating housing in which a plurality of contacts are arranged, the capacitor block has a dielectric plate and a ground plate. The dielectric plate has a plurality of contact through holes arranged at an arrangement pitch corresponding to the arrangement pitch of the contacts disposed in the insulating housing, and one surface of the dielectric plate has ,
A ground/capacitor common electrode layer is provided over almost the entire surface of each of the contact through holes except for the periphery of each of the contact through holes, and a ground/capacitor common electrode layer is provided on the other surface of the dielectric plate. Separate capacitor electrode layers are provided in contact with the contacts inserted into the corresponding contact through holes, and the ground plate has an opening in the center, and the ground plate has an opening in the center. When the dielectric plates are coupled, the ground/capacitor common electrode layer of the dielectric plate comes into contact with a flat area around the opening of the ground plate, and all of the contact through holes of the dielectric plate are connected to the dielectric plate. The contacts are configured to be exposed in the opening of the body plate, and each of the contacts has a press-fitting part between the contact part and the connection part, and each of the contacts has a press-fitting part at the press-fitting part. The contact holes are press-fitted into the corresponding contact through holes of the dielectric plate.

Further, according to the present invention, the method for manufacturing the capacitor-containing electrical connector of the type described above includes preparing the dielectric plate above and the ground plane below, and then connecting the dielectric plate and the ground plane to each other. and a second step of attaching the capacitor block to the i@rim housing.

Embodiments Next, the present invention will be described in more detail with reference to embodiments of the present invention based on the accompanying drawings.

FIG. 1 is a perspective view of an exploded parts arrangement of a capacitor-containing electrical connector as an embodiment of the present invention, and FIG. 2 is a partially cutaway sectional view showing the assembled state of the capacitor-containing electrical connector of FIG. be. As clearly shown in FIG. 1, the capacitor-containing electrical connector of this embodiment mainly consists of:
It includes an insulating housing 10, a capacitor block 20, and a retaining plate 60.

The insulating housing IO is formed with a recess 12 that is open on the rear surface, and the bottom surface 1 of the recess 12 is further formed from the front fitting surface 11.
A plurality of contact array holes 13 (
(see FIG. 2), and mounting protrusions 16 are provided on both sides of the insulating housing 10. Recess 12
A groove 14 having an inclined surface 14' is formed in the inner surface 12B of the groove 14, and a through hole 15 is formed in the depth of the groove 14. Further, on the inner surface 12B of the recess 12, locking ribs 18A and 18B are formed to lock a ground plate 40 of a capacitor block 20, which will be described later. For attachment, the protrusion 16 is provided with a front part 16A1, a rear recess 16B and a screw hole 17 for the purpose described later.

The capacitor block 20 includes a dielectric plate 30 made of a ceramic material and a ground plate 40 made of a conductive material such as a metal material. Figure 3 (A>
is a plan view showing one surface of a dielectric plate 30;
FIG. 3(B) is a plan view showing the other surface of the dielectric plate 30. FIG. As shown in FIGS. 3(A) and 3(B), the dielectric plate 30 includes an insulating housing 1
The contact through holes 31 are formed in accordance with the arrangement pitch of the contacts 50 arranged in a row. As shown in FIG. 3(A), one surface of the dielectric plate 30 is coated with a conductive material such as copper or solder over almost the entire surface except for the area around the contact through hole 31. A formed ground/capacitor common electrode layer 32 is provided.
As clearly shown in FIG. 3(B), the other surface of the dielectric plate 30 is provided with a groove around the contact through hole 31 extending over the inner circumferential wall of the corresponding contact through hole. A separate capacitor electrode layer 33 is provided. These separate capacitor electrodes 1i33 are also formed of a conductive material such as copper or solder. Furthermore, Figure 3 (
As shown in A), it is preferable to provide protrusions 34A and 34B on both sides of one surface of the dielectric plate 30, which serve as guides when attaching to a ground plate 40, which will be described later.

It is convenient if these protrusions 34Δ, 34B have different shapes from each other, since it can prevent them from being attached to the ground plate 40 in the wrong direction.

As shown in FIG. 1, the ground plate 40 has an inclined portion 42 and a mounting portion 41 by bending both sides.

A screw hole 43 is provided in the mounting portion 41. Further, an opening 45 is provided in the central portion of the ground plate 40, and a flat portion 44 is formed around the opening 45. The opening 45 is sized to expose all of the contact through holes 31 of the dielectric plate 30. On both sides of the opening 45, recesses i 46 A and 46B are formed that correspond to the protrusions 34A and 34B of the dielectric plate 30, respectively, and have different shapes.

Such a ground plate 40 has the grounding/capacitor common electrode layer 3 of the dielectric plate 30 on the flat part 44 around the opening 450.
2 are connected to the dielectric plate 30 so that they are in contact with each other. Then, each contact through hole 3 of the dielectric plate 30
1, a male contact 50 is press-fitted and fixed. As clearly shown in FIG. 5, each male contact 50 has a contact portion 51 for contacting a female contact of a mating connector, a connection portion 53 on the opposite side from this contact portion, and ,
The contact through hole 3 of the power return body plate 30 is located in the middle between them.
It has a press-fitting part 52 that is press-fitted into 1. Therefore, these male contacts 50 have their press-fit portions 52 connected to the dielectric plate 30.
By press-fitting into each contact through hole 31 of
fixed to the dielectric plate 30 and each separated capacitor electrode layer 3
It will be electrically connected to 3.

The retaining plate 60 has a recess 62 on the front surface, and the recess 62
It has a plurality of contact wiring arrangement holes 66 penetrating from the bottom surface 62A to the wiring connection surface (10) on the rear surface, and further has side recesses 63 on both sides.

In addition, slopes 6 are provided on both sides 64 of the retaining plate 60 at positions corresponding to the grooves 14 and the horizontal holes 15 of the insulating housing 10.
A protrusion 65 having a diameter of 5A is provided.

Next, an embodiment of the method of manufacturing a capacitor-containing electrical connector having such a configuration according to the present invention will be described.

(1) First, as shown in FIG.
, a transfer connecting band 4 with a number of guide holes 401 provided below.
A large number of ground plates 40 connected to 00 are prepared. Then, the dielectric plate 30 is stacked on the upper surface of the ground plate 40. At this time, it is preferable to apply a cream-like solder layer to the flat part 44 around the opening 45 on the upper surface of the ground plate 40. Furthermore, when stacking the dielectric plate "30" on the top surface of the ground plate 40, be careful not to make a mistake in the direction of the dielectric plate "30".
Protrusion 134A of dielectric plate 3o.

34B and the concave portions 46A and 46B of the ground plate 40 may be made to coincide with each other.

(2) In the state described in item (1) above, the whole is heated, for example, by passing it through an electric heating furnace. Then, the ground plate 40 and the ground/capacitor common electrode layer 32 of the dielectric plate 30 are fused, and the dielectric plate 30 and the ground plate 4o are connected.

(3) Next, as shown in FIG. 5, the dielectric plate 30 and the ground plate 4o are connected to a transfer connecting band 500 having a large number of guide holes 501 above the integrally connected dielectric plate 30 and the ground plate 4o. A male contactor 50 is prepared in advance, and a press-fitting part 52 is press-fitted into the contact through-hole 31 provided in the dielectric plate 30.

Then, the projection B54 provided on the top of the press-fit BO2 or press-fit portion 52 will be connected to the separated capacitor electrode layer 33 provided around the contact through hole 31 of the dielectric plate 3o. Then, the male contact 50 is separated from the transfer connecting band 500 by cutting the connecting portion 502. Thereby, the capacitor block 20 is completed.

However, this step may be performed before the step (1) above. That is, after fixing the male contact 50 to the contact through hole 31 of the conductive plate 30, the ground plate 40
The dielectric plate 30 may be coupled to the dielectric plate 30.

(4) Finally, as shown in FIG.
The capacitor block 20 is inserted and placed in the recess 12 of 0. Then, the retaining plate 60 is further inserted into the recess 12 of the insulating housing 100 from behind. Then, the transfer connecting band 400 connected to the ground plate 40 is connected to the connecting part 40.
By cutting at part 2, the capacitor-containing electrical connector is completed.

In the embodiment of the manufacturing method described above, heating is required to bond and fix the dielectric plate 30 and the ground plate 40, but the heating time may be shorter than the conventional solder heating time. Further, the heat of the dielectric plate 30 is radiated by the ground plate 40, so that the heat of the dielectric plate 30 is radiated by the ground plate 40.
will not deteriorate or be damaged.

Further, in the embodiment of the manufacturing method described above, a cream-like solder layer is applied to the periphery of the opening 45 on the upper surface of the ground plate 40 and heated, but the present invention is not limited to this. Instead of the solder layer, a conductive adhesive may be used to bond the dielectric plate 30 and the ground plate 40.

Furthermore, in the above-described embodiment, a large number of male contacts 50 and ground plates 40 are connected and movable by transfer connecting bands 500 and 400, respectively, and the dielectric plate 30
However, the present invention is not limited to this, and the male contact and the ground plate may be connected and moved by other methods, for example, using an appropriate connection jig. .

FIG. 6 is a partial schematic diagram for explaining another embodiment of the present invention. In the above-mentioned embodiment, the dielectric plate 30 and the ground plate 40 were fixed by soldering through heating process.
In the embodiment shown in FIG. 6, the dielectric plate 30A and the ground plate 40
A and A are coupled and fixed to each other by mechanical engagement means.

To explain this point in detail, as shown in FIG.
On both sides of A, there are locking pieces 4 provided on the ground plate 40A.
A locking recess 34C for receiving 6C is provided.

The rest of the configuration may be the same as that of the dielectric plate 30 of the previous embodiment, so it will not be described in detail again. On the other hand, the ground plate 40A
In this step, a locking piece 46C bent in a square shape is formed at a position corresponding to the locking recess 34C.The other configuration may be the same as the configuration of the ground plate 40 of the above-mentioned embodiment.
Don't repeat details. As a method for assembling the dielectric plate 30A and the ground plate 40A, the ground plate 4
Place the dielectric plate 30A on top of the dielectric plate 30A, and then use a jig (not shown) to attach the dogleg-shaped locking piece 46C to the dielectric plate 30A.
Bend it so that it locks in the locking recess 34C. Thereafter, as shown in FIG. 5, the male contact 50 is inserted into the contact through hole of the dielectric plate 30A. Other manufacturing steps may be the same as in the previous embodiment. Thereby, the dielectric plate and the ground plate can be fixed together without using a heating process.

FIGS. 7 and 8 are cross-sectional views showing other embodiments of dielectric plates used in the capacitor-containing electrical connector of the present invention.

Both sides of the dielectric plate in the above example were flat surfaces. However, with such a flat surface, it is impossible to secure a sufficient area for the separate capacitor electrode layer and the ground/capacitor common electrode layer, and the capacitance of the capacitor is inevitably reduced. Therefore, there is a possibility that the response to interference radio waves will be incomplete. Therefore, in the dielectric plates shown in FIGS. 7 and 8, in order to increase the capacitance of the capacitor as much as possible, each electrode layer is made uneven to increase the area of the capacitor electrode. That is, in the example shown in FIG. 7, the peripheral part of the contact through hole 31B of the dielectric plate 30B, where the separate capacitor electrode layer 33B is formed, is convex, and the ground/capacitor common electrode layer 32B is formed. The side surfaces are left flat. In the example shown in FIG. 3, the peripheral portion of the contact through hole 31C of the dielectric plate 30C, where the separation capacitor electrode layer 33C is applied, is also located on the dielectric plate 30C.
The peripheral portion of the contact through hole 31C on the surface where the ground/capacitor common electrode layer 32C of C is applied is also formed into a concave shape.

Furthermore, in the embodiment described above, the separate capacitor electrode layer 3'3 formed around the contact through hole 31 was extended over the inner peripheral wall of the contact through hole 31. However, the present invention is not limited thereto. For example, the separated capacitor electrode layer 33 is formed only in the periphery of the contact through hole 31.
It does not necessarily have to be formed on the inner circumferential wall of No. 1. However, in this case, it is preferable that the shape of the male contact press-fitted into the contact through hole 31 be as shown in FIG. 9 or FIG. 10.

Male contact of the embodiment shown in a partially perspective view in FIG. 9)
50A has protrusions 55A formed on the lower surface of the protrusion u 54 A immediately above the press-fitting part 52A, and these protrusions 55A
When the male contact 50A is fixed to the contact through hole, it bites into the separated capacitor electrode layer around the contact through hole to establish reliable electrical contact.

The male contact 5 (13) of the embodiment shown in a partially perspective view in FIG.
A spring tongue piece 55B is formed at the lower end of 54B. These spring tongues 55B press into contact with the separated capacitor electrode layer around the contact through-hole when the contact 50B is fixed to the contact through-hole to achieve reliable electrical contact.

Effects of the Invention Since the present invention has the above-described configuration, it has the following effects.

(1) It is possible to form a capacitor block by simply attaching a capacitor, which is a plate-shaped dielectric plate, to the ground plate, so mass production is possible, and it is inexpensive.
Moreover, the quality is stable.

(2) Capacitor electrode layers can be applied at precisely minute intervals using printing technology or etching technology, so even if the contact arrangement pitch is quite narrow, each capacitor can be provided, so the contact arrangement It becomes possible to narrow the pitch, and the capacitor-containing electrical connector can be made smaller.

(3) According to the manufacturing method of the present invention, it is possible to assemble most of the parts without using human hands, so automation is possible, mass production and significant cost reduction can be achieved, and the quality is constant and high. We can provide reliable capacitor-containing electrical connectors.

(4) Since it is not necessary to apply much heat to the J dielectric plate, there is no risk of deterioration or damage to the dielectric plate due to heating during the manufacturing process.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of an arrangement of parts of a capacitor-containing electrical connector as an embodiment of the present invention, FIG. 2 is a partially cutaway sectional view showing the assembled state of the capacitor-containing electrical connector of FIG. 1, and FIG. Figure (A) is a plan view showing one surface of the dielectric plate, Figure 3 (B) is a plan view showing the other surface of the dielectric plate, and Figures 4 and 5 are the same as Figure 1. FIG. 6 is a partial schematic diagram for explaining another embodiment of the present invention, and FIGS. 7 and 8 are: 9 and 10 are sectional views showing other embodiments of the dielectric plate used in the capacitor-containing electrical connector of the present invention, respectively.
The figures are partial perspective views showing other embodiments of male contacts used in the capacitor-containing electrical connector of the present invention. 10...Insulation housing, 20...Capacitor block, 30...
・Dielectric plate, 31...Contact through hole, 32...Earth and capacitor common electrode layer, 33
...Separated capacitor electrode layer, 40...
Ground plate, 44... Flat part, 45...
・Opening, 50... Contact, 51... Contact part, 52... Press-fitting part, 53... Connection part, 60... Removal prevention plate . Figure 2 Figure 3 Figure 5 500 Figure 6 Figure 2a

Claims (16)

[Claims] (1) In a capacitor-containing electrical connector in which a capacitor block is coupled to an insulating housing in which a plurality of contacts are arranged, the capacitor block includes a dielectric plate and a ground plate, and the dielectric plate A plurality of contact through-holes are provided at an arrangement pitch corresponding to the arrangement pitch of the contacts arranged in the insulating housing, and one surface of the dielectric plate has a plurality of contact through-holes, excluding the peripheral area of each of the contact through-holes. A grounding and capacitor common electrode layer is provided over almost the entire surface of the dielectric plate, and a contact inserted into at least the corresponding contact through hole is provided on the other surface of the dielectric plate in the peripheral area of each contact through hole. A separate capacitor electrode layer is provided so as to be in contact with the ground plate, and the ground plate has an opening in the center, and when the dielectric plate is coupled to the ground plate, the dielectric plate such that the ground/capacitor common electrode layer contacts a flat surface around the opening of the ground plate, and all of the contact through holes of the dielectric plate are exposed within the opening of the dielectric plate. Each contact has a press-fit portion between the contact portion and the connection portion, and each contact is inserted into each corresponding contact through hole of the dielectric plate at the press-fit portion. An electrical connector containing a capacitor characterized by being press-fitted and fixed. (2) The capacitor-containing electrical connector according to claim (1), wherein a peripheral portion of the contact through hole of the dielectric plate where the separated capacitor electrode layer is formed is convex. (3) A capacitor-containing electrical connector according to claim (1), wherein a peripheral portion of the contact through hole of the dielectric plate, on which the separated capacitor electrode layer is applied, is concave. (4) The separated capacitor electrode layer extends over a portion of the inner peripheral wall of its corresponding contact through hole. Electrical connector with capacitor as described. (5) The area around the contact through hole on the surface of the dielectric plate where the ground/capacitor common electrode layer is applied is:
Claims (1) or (2) that are concave
), or (3) or (4), the capacitor-containing electrical connector. (6) The capacitor-containing electrical connector according to any one of claims (1) to (5), wherein the dielectric plate is coupled to the ground plate by soldering. . (7) The capacitor according to any one of claims (1) to (5), wherein the dielectric plate is bonded to the ground plate with a conductive adhesive. electrical connector. (8) Claim (1), wherein the dielectric plate is coupled to the ground plate by mechanical engagement means.
The capacitor-containing electrical connector according to any one of paragraphs to (5). (9) A capacitor-containing electrical connector in which a capacitor block is coupled within an insulating housing in which a plurality of contacts are arranged, the capacitor block comprising a dielectric plate and a ground plate, the dielectric plate being , a plurality of contact through holes are arranged at an arrangement pitch corresponding to the arrangement pitch of the contacts arranged in the insulating housing, and one surface of the dielectric plate has a peripheral portion of each contact through hole. A grounding/capacitor common electrode layer is provided over almost the entire surface of the dielectric plate except for a grounding/capacitor common electrode layer, and a grounding/capacitor common electrode layer is provided on the other surface of the dielectric plate at least in the periphery of each contact through hole. A separate capacitor electrode layer is provided so as to be in contact with the contacts, and the ground plate has an opening in the center, and when the dielectric plate is coupled to the ground plate, the dielectric The ground/capacitor common electrode layer of the body plate contacts a flat surface around the opening of the ground plate, and all of the contact through holes of the dielectric plate are exposed within the opening of the dielectric plate. Each of the contacts has a press-fitting portion between the contact portion and the connection portion, and each of the contacts has a press-fitting portion that extends through each of the corresponding contacts of the dielectric plate. In the method for manufacturing an electrical connector containing a capacitor that is press-fitted into a hole, the dielectric plate is prepared above and the ground plate is prepared below, and then the dielectric plate and the ground plate are combined to form the capacitor block. and a second step of attaching the capacitor block to the insulating housing. (10) In the first step, the ground plate is connected to the transfer connecting band, and after the second step, the ground plate is separated from the transfer connecting band. The manufacturing method described in scope item (9). (11) In the first step, the dielectric plate is coupled to the ground plate after the contacts are press-fitted and fixed in the contact through holes.
or (10). (12) In the first step, the dielectric plate is coupled to the ground plate before the contact is press-fitted into the contact through hole.
or (10). (13) The contact is press-fitted and fixed into the contact through hole of the dielectric plate while being coupled to the transfer connecting band. The manufacturing method described in any of the above. (14) The dielectric plate is bonded to the ground plate by heating via a cream-like solder layer applied to the plane portion of the ground plate. The manufacturing method according to any one of paragraphs. (15) The manufacturing method according to any one of claims (9) to (13), wherein the dielectric plate is bonded to the ground plate with a conductive adhesive. (16) The manufacturing method according to any one of claims (9) to (13), wherein the dielectric plate is coupled to the ground plate by mechanical engagement means. Method.