KR20230087175A - Contact unit for filter connector and cable assembly comprising the same - Google Patents

Abstract

The present invention relates to a contact unit for a filter connector and a cable assembly comprising same. The contact unit for a filter connector according to one embodiment of the present invention comprises: a contact; a chip capacitor accommodation unit made of an insulating material and disposed around the contact; a plurality of chip capacitors accommodated in the chip capacitor accommodation unit and disposed in a shape surrounding a circumference of the contact; and an inductor and a ground wire disposed adjacent to the chip capacitor accommodation unit and disposed to be electrically connected to the contact. Here, the plurality of chip capacitors each have a pair of external electrodes, one of the pair of external electrodes is electrically connected to the contact, and the other one of the pair of external electrodes is electrically connected to the ground wire. According to present invention, it is possible to reduce the manufacturing cost of the filter connector because the contact unit for a filter connector has a simple structure.

Description

Contact unit for filter connector and cable assembly including the same {CONTACT UNIT FOR FILTER CONNECTOR AND CABLE ASSEMBLY COMPRISING THE SAME}

The present invention relates to a contact unit for a filter connector and a cable assembly including the same, and more particularly, to a contact unit that can be removably mounted on a filter connector and a cable assembly including the same.

Communication cables having connectors are used to transmit electrical signals between electronic devices. An electrical signal transmitted through such a communication cable may include a signal of an unnecessary frequency band, that is, noise. When such noise is included, the performance of electronic devices may be affected.

Accordingly, a filter connector having a filter function is widely used in order to remove noise included in an electrical signal.

As a representative filter connector, a monolithic planar capacitor type in which an electrode is interposed inside a planar block made of dielectric, a filter sleeve coupled around the contact and connected to the connector shell to ground Tubular capacitor types and the like are known. However, in the monolithic planar capacitor type filter connector, each contact inevitably performs a filter function for a frequency of the same band, and there are limitations in maintaining and repairing individual contacts. In addition, since the tubular capacitor type filter connector has a complicated internal structure and is expensive, there is a limitation in that it is used only for special purposes.

In order to solve the problem of these existing filter connectors, steady technology development is being made.

For example, in Patent Document 1 (Registered Patent Publication No. 10-1441824) relating to a filter assembly of a connector for communication, a circuit board on which an inductor chip or capacitor chip is mounted instead of a planar capacitor and a ferrite core is used to reduce manufacturing cost. and adopts a structure in which pins (contacts) are connected thereto. However, even according to Patent Document 1, there are limitations in terms of efficiency and cost of maintenance, such as the need to replace the entire circuit board when a problem occurs in an individual contact.

Accordingly, there is still a demand for the development of a filter connector capable of reducing manufacturing and maintenance costs while having a simple structure.

Registered Patent Publication No. 1441824 (2014.09.11)

The present invention is to solve the problems of the prior art described above, and an object of the present invention is to provide a contact unit for a filter connector capable of reducing manufacturing cost with a simple structure.

Another object of the present invention is to provide a contact unit for a filter connector that has a filter function and can be mounted to a connector so as to be removable, so that when mounted on the connector, it can selectively perform a filter function for frequencies of various bands.

Another object of the present invention is to provide a cable assembly including the contact unit for the filter connector.

A contact unit for a filter connector according to an embodiment of the present invention includes a contact, a chip capacitor accommodating portion made of an insulating material and disposed around the contact, and a plurality of chips accommodated in the chip capacitor accommodating portion and disposed surrounding the circumference of the contact. and a chip capacitor, an inductor disposed adjacent to the chip capacitor accommodating portion and electrically connected to the contact, and a ground wire. Here, each of the plurality of chip capacitors includes a pair of external electrodes, one of the pair of external electrodes is electrically connected to the contact, and the other of the pair of external electrodes is electrically connected to the ground wire.

A contact unit for a filter connector according to an embodiment of the present invention may further include a shield sleeve mounted around the contact to surround the chip capacitor accommodating portion, the plurality of chip capacitors, and the inductor, and the plurality of chip capacitors include the shield sleeve. It can be electrically connected to the ground wire through

According to one embodiment of the present invention, the contact may include a pin portion. Alternatively, the contact may include a socket portion.

According to one embodiment of the present invention, a through hole configured to insert a contact through an axial direction may be formed in the chip capacitor accommodating portion, and an accommodating groove configured to accommodate a plurality of chip capacitors may be formed along a circumferential direction. there is.

According to one embodiment of the present invention, a plurality of chip capacitor accommodating units may be disposed along the axial direction of the contact. In this case, the inductor may be interposed between the plurality of chip capacitor accommodating units.

A cable assembly having a filter function according to an embodiment of the present invention includes a connector shell, an insulating block accommodated in the connector shell and having at least one hole formed therein, and at least one configured to be mounted in at least one hole formed in the insulating block. It includes a contact unit and a cable configured to be coupled to the connector shell. Here, the at least one contact unit includes a contact, a chip capacitor accommodating portion made of an insulating material and disposed around the contact, a plurality of chip capacitors accommodated in the chip capacitor accommodating portion and disposed surrounding the circumference of the contact, and a chip capacitor and an inductor and a ground wire disposed adjacent to the receiving portion and electrically connected to the contact. Also, each of the plurality of chip capacitors includes a pair of external electrodes, one of the pair of external electrodes is electrically connected to the contact, and the other of the pair of external electrodes is electrically connected to the ground wire.

According to one embodiment of the present invention, the contact unit for a filter connector has a simple structure, and the manufacturing cost of the filter connector can be reduced. Furthermore, since the contact unit for the filter connector can be mounted to the connector in a removable manner, maintenance costs can be reduced by replacing only the contact unit having a problem when there is a problem with an individual contact.

In addition, since a frequency band to be filtered can be set for each filter connector contact unit, a filter connector capable of selectively performing a filter function for frequencies of various bands can be implemented.

According to one embodiment of the present invention, it is possible to implement a cable assembly that reduces manufacturing cost and is easy to maintain.

1 is a schematic view of a cable assembly according to an embodiment of the present invention.
2 is a cross-sectional view of a filter connector according to an embodiment of the present invention.
3 is a perspective view of a contact unit for a filter connector according to an embodiment of the present invention.
4 is a cross-sectional view of a contact unit for a filter connector according to an embodiment of the present invention.
5 is a cross-sectional view illustrating a chip capacitor and a chip capacitor accommodating portion mounted in a contact unit for a filter connector according to an embodiment of the present invention.
6 is a schematic view of a cable assembly according to another embodiment of the present invention.
7 is a cross-sectional view of a filter connector according to another embodiment of the present invention.
8 is a perspective view of a contact unit for a filter connector according to another embodiment of the present invention.
9 is a cross-sectional view of a contact unit for a filter connector according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention will be described in detail so that those skilled in the art can easily practice it.

In order to clearly describe the present invention, descriptions of parts not related to the present invention are omitted, and the same reference numerals are given to the same components throughout the specification.

In the present specification, when one component is described as being “connected” to another component, this means that the two components are directly connected to each other as well as connected to each other via another component. In addition, expressions such as “comprising” and “comprising” used in this specification are open-ended terms that imply the possibility of including other elements or embodiments unless otherwise stated in the phrase or sentence in which the expression is included ( open-ended terms).

Since the size, thickness, position, etc. of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to those shown. That is, specific shapes, structures, and characteristics described in the specification may be changed and implemented from one embodiment to another without departing from the spirit and scope of the present invention, and the position or arrangement of individual components may also be implemented without departing from the spirit and scope of the present invention. and can be changed without departing from its scope.

Therefore, the detailed description to be described later is not performed in a limiting sense, and the scope of the present invention should be taken as encompassing the scope claimed by the claims and all scopes equivalent thereto.

1 is a schematic view of a cable assembly according to an embodiment of the present invention.

Referring to FIG. 1 , a cable assembly 10 according to an embodiment of the present invention includes a cable 11 and a filter connector 100 .

The filter connector 100 is installed on one or both ends of the cable 11, so that an electrical signal input to the cable assembly 10 through the filter connector 100 can be transmitted to other electronic equipment through the cable 11. .

The present invention is characterized by the filter connector 100, in particular, the contact unit constituting the filter connector 100, and the filter connector 100 and the contact unit constituting the filter connector 100 will be described in detail below.

2 is a cross-sectional view of a filter connector according to an embodiment of the present invention.

Referring to FIG. 2 , a filter connector 100 according to an embodiment of the present invention is a male connector having a filter function, and may include a contact unit 110, an insulation block 120, and a connector shell 130. .

The contact unit 110 includes a pin-type contact, so that when the filter connector 100 is coupled to another connector (ie, a female connector), it is electrically connected to a corresponding contact (ie, a socket-type contact) and electrically It constitutes a pathway through which signals are transmitted. Each contact unit 100 according to this embodiment has a filter function and is configured to be removably mounted to the filter connector 100, and the detailed configuration of the contact unit 110 will be described later.

The insulating block 120 has a function of accommodating and stably fixing the contact unit 110 . To this end, a plurality of through-holes having a size through which the contact unit 110 can be stably coupled are formed in the insulating block 120 along the axial direction (left-right direction in the drawing). The insulation block 120 has a shape suitable for the shape of the filter connector 100, for example, a cylindrical shape, and is an insulating material so that current is not transmitted to the outside even when a high voltage current flows or a large amount of data is transmitted. can be formed as

The connector shell 130 forms a space capable of accommodating the contact unit 110 and the insulating block 120 therein. The connector shell 130 may have a suitable shape, for example, a circular tube shape, depending on the purpose of use of the filter connector 100 . The connector shell 130 may have a fastening structure capable of being stably coupled when the filter connector 100 is coupled with another connector (ie, a female connector). Also, the connector shell 130 may be configured to be coupled with the cable 11 .

The filter connector 100 according to an embodiment of the present invention may further include a connector housing 140 . The connector housing 140 forms the exterior of the filter connector 100 and may provide a space capable of accommodating components constituting the filter connector 100 therein.

3 is a perspective view of a contact unit for a filter connector according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view of a contact unit for a filter connector according to an embodiment of the present invention. A contact unit for use will be described.

The contact unit 110 for a filter connector according to an embodiment of the present invention includes a contact 111, a chip capacitor 112, a chip capacitor accommodating portion 113, a shield sleeve 114, a ground wire 115, and an inductor ( 116) may be included.

The contact 111 of the contact unit 110 according to the present embodiment is formed in a pin shape, and is configured to be inserted into and connected to a socket-shaped contact to be described later. The contact 111 may include a pin portion 111a configured to be directly connected to a socket-shaped contact and a connection portion 111b connected thereto. When an electric signal is input to the pin part 111a of the contact 111, the electric signal can be transmitted to the cable 11 via the connection part 111b, and in this process to the chip capacitor 112 and the inductor 116 described later. Noise of a preset frequency band may be removed by the filter formed.

The chip capacitor 112 and the inductor 116 of the contact unit 110 according to this embodiment are arranged around the contact 111 to perform a filter function.

First, the chip capacitor 112 is described. External electrodes are provided at both ends of the chip capacitor 112, one of which is electrically connected to the contact 111, and the other to a ground wire 115 to be described later. arranged to be connected. According to this embodiment, a plurality of chip capacitors 112 may be disposed in a form surrounding the contact 111 and connected in parallel to each other. Meanwhile, the chip capacitor 112 according to the present embodiment may be a multi-layer ceramic capacitor (MLCC).

The chip capacitor accommodating portion 113 of the contact unit 110 according to the present embodiment is mounted on the contact 111 to stably arrange the chip capacitor 112 around the contact 111 .

5 is a view showing a chip capacitor and a chip capacitor accommodating portion mounted in a contact unit for a filter connector according to an embodiment of the present invention. The chip capacitor accommodating portion 113 is formed in a substantially cylindrical shape and has an axial direction at the center thereof. Accordingly, a through hole through which the contact 111 can be inserted is formed. In addition, accommodating grooves in which a plurality of chip capacitors 112 can be accommodated are formed along the outer periphery of the chip capacitor accommodating portion 113 . In this embodiment, four accommodating grooves are formed in one chip capacitor accommodating portion 113 to accommodate four chip capacitors 112 .

The accommodating groove of the chip capacitor accommodating part 113 is such that external electrodes on both sides of the chip capacitor 112 accommodated can directly or indirectly contact and be electrically connected to the contact 111 and the shield sleeve 114 described later. Both ends have an open shape. That is, a plurality of accommodating grooves may be formed along the outer periphery of the chip capacitor accommodating portion 113 so as to penetrate vertically in the axial direction.

The chip capacitor accommodating portion 113 may be made of an insulating material to block electrical connection in portions other than the external electrodes of the chip capacitor 112 . A plurality of accommodating grooves formed along the outer periphery of the chip capacitor accommodating portion 113 may be arranged at equal intervals, and may be insulated from each other by a barrier made of an insulating material.

As shown in FIG. 4 , in this embodiment, two chip capacitor accommodating portions 113 are disposed with the inductor 116 interposed along the axial direction of the contact, so a total of eight chips around the contact 111. A capacitor 112 may be disposed. However, the number and arrangement of the chip capacitors 112 may be changed according to a frequency band that needs to be removed, and the present invention is not limited to those shown.

The inductor 116 of the contact unit 110 according to the present embodiment is disposed around the contact 111 like the plurality of chip capacitors 112 and is configured to be electrically connected to the contact 111 . According to this embodiment, the inductor 116 may be interposed between the pair of chip capacitor accommodating parts 113 . Alternatively, the contact unit 110 may include only one chip capacitor accommodating portion 113 and the inductor 116 may be disposed adjacent thereto. Meanwhile, the inductor 116 may be formed of a ferrite core, but the present invention is not limited thereto.

The shield sleeve 114 of the contact unit 110 according to the present embodiment is configured to surround the chip capacitor 112 and the chip capacitor accommodating portion 113. Specifically, the shield sleeve 114 may have a cylindrical shape surrounding the chip capacitor accommodating portion 113 , the plurality of chip capacitors 112 , and the inductor 116 . In addition, the shield sleeve 114 is made of a conductive material and may directly or indirectly contact and be electrically connected to one of the external electrodes of each of the plurality of chip capacitors 112 .

The ground wire 115 of the contact unit 110 according to this embodiment is connected to the chip capacitor 112 to perform a grounding function. According to this embodiment, one end of the ground wire 115 is connected to the shield sleeve 114 that directly or indirectly contacts the external electrode of each of the plurality of chip capacitors 112, and through the shield sleeve 114, a plurality of It may be electrically connected to the chip capacitor 112 . In addition, the other end of the ground wire 115 is arranged to extend in a direction toward the cable 11 when the contact unit 110 is attached to the filter connector 100, and is attached to a shield (not shown) of the cable 11. can be connected In order to connect the ground wire 115 to the shield of the cable 11, when the contact unit 110 is attached to the filter connector 100, the other end of the ground wire 115 may be partially bent.

In this embodiment, the ground wire 115 is made of a conductor extending long in the axial direction, but it is sufficient if it can perform a grounding function, and it will be possible to change it into various forms capable of performing this function.

According to the above-described embodiment of the present invention, each of the plurality of chip capacitors 112 disposed around the contact 111 has one external electrode electrically connected to the contact 111 and the other external electrode connected to the ground. A filter may be formed by being electrically connected to the wire 115 and grounded. For example, when the inductor 116 is interposed between the pair of chip capacitor accommodating units 113, a PI filter is formed, and only one chip capacitor accommodating unit 113 is provided and an inductor ( 116) is disposed, it forms an LC filter.

As such, according to an embodiment of the present invention, a contact unit having a PI filter or an LC filter can be implemented with a simple structure, and a filter connector can be implemented by mounting the contact unit to a connector. That is, since the filter connector can be implemented only by mounting the contact unit on a connector that does not have a conventional filter function, the filter connector can be used at low cost.

Since the contact units may be individually and removably attached to the connectors, when a problem occurs in the contact unit, maintenance is possible by replacing only the corresponding contact unit without replacing the entire connector.

In addition, the capacitance of the filter for each contact unit may be adjusted by changing the number of chip capacitors connected in parallel or by changing the capacitance of each chip capacitor. Accordingly, a filter connector capable of performing a filter function for frequencies of various bands may be implemented by setting different filter capacities for each contact unit.

6 is a schematic view of a cable assembly according to another embodiment of the present invention, and FIG. 7 is a cross-sectional view of a filter connector according to another embodiment of the present invention. The filter connector 200 according to another embodiment of the present invention is different from the filter connector 100 according to the previous embodiment in that it is a female connector, and this embodiment will be mainly described based on this difference.

First, referring to FIG. 6 , a cable assembly 20 according to an embodiment of the present invention includes a cable 21 and a filter connector 200 . The filter connector 200 may be installed at one or both ends of the cable 21 to transmit electrical signals to other electronic equipment.

Referring next to FIG. 7 , the filter connector 200 according to an embodiment of the present invention is a female connector having a filter function, and may include a contact unit 210, an insulation block 220, and a connector shell 230. there is.

The contact unit 210 includes a socket-type contact, so that when the filter connector 200 is coupled to another connector (ie, a male connector), the contact unit 210 is electrically connected to a corresponding contact (ie, a pin-type contact) to generate an electrical signal. constituting a pathway through which Each contact unit 200 according to this embodiment also has a filter function and is configured to be removably mounted to the filter connector 200 .

In order to stably fix the contact unit 210, the insulation block 220 includes a plurality of through holes formed in a size that allows the contact unit 210 to be inserted and coupled along the axial direction (left and right direction in the drawing). have The insulating block 220 may have, for example, a cylindrical shape and be formed of an insulating material.

The connector shell 230 forms a space capable of accommodating the contact unit 210 and the insulating block 220 therein. The connector shell 230 may be formed in a circular tube shape, and may have a fastening structure capable of being stably coupled when the filter connector 200 is coupled with another connector (ie, a male connector). Also, the connector shell 230 may be configured to be coupled with the cable 21 . The connector shell 230 may have a flange for stable fastening as shown, but the present invention is not limited thereto.

8 is a perspective view of a contact unit for a filter connector according to another embodiment of the present invention, and FIG. 9 is a cross-sectional view of the contact unit for a filter connector according to another embodiment of the present invention.

8 and 9, the contact unit 210 for a filter connector according to the present embodiment includes a contact 211, a chip capacitor 212, a chip capacitor accommodating portion 213, a shield sleeve 214, and a ground wire. (215) and an inductor (216).

The contact 211 of the contact unit 210 according to this embodiment is formed in a socket shape, so that the pin-type contact in the previous embodiment can be inserted and connected. The contact 211 may include a socket portion 211a into which a pin-shaped contact may be inserted and a connection portion 211b connected thereto. The contact 211 may further include a cover 211c covering an end of the socket portion 211a. When an electrical signal is input to the socket portion 211a of the contact 211, the electrical signal can be transmitted to the cable 21 via the connection portion 211b. Noise of a preset frequency band can be removed.

The chip capacitor 212, the chip capacitor accommodating portion 213, the shield sleeve 214, and the ground wire 215 of the contact unit 210 according to this embodiment have the same configuration as in the previous embodiment.

That is, the plurality of chip capacitors 212 are accommodated in the chip capacitor accommodating portion 213 so that one external electrode is electrically connected to the contact 211, and the other external electrode is connected to the ground wire (through the shield sleeve 214). 215) is electrically connected. In addition, the ground wire 215 is configured such that one end is connected to the shield sleeve 214 and the other end is connected to the shield (not shown) of the cable 21 . In this embodiment, in order to connect the ground wire 215 to the shield of the cable 21, when the contact unit 210 is mounted on the filter connector 200, the other end of the ground wire 115 may be partially bent. In addition, an inductor 216 is disposed adjacent to the chip capacitor accommodating portion 213 in which the plurality of chip capacitors 212 are accommodated and electrically connected to the contact 211 . In this case, the inductor 216 may be interposed between the pair of chip capacitor accommodating parts 213 or disposed adjacent to one chip capacitor accommodating part 213 .

As such, each of the plurality of chip capacitors 212 disposed around the contact 211 is grounded by having one external electrode connected to the contact 211 and the other external electrode connected to the ground wire 215, respectively. As the inductor 216 disposed adjacent to the chip capacitor 212 is electrically connected to the contact 211, a PI filter or an LC filter may be formed.

Meanwhile, in the present embodiment, two chip capacitor accommodating portions 213 are disposed with the inductor 216 interposed along the axial direction of the contact 211, so that a total of eight chip capacitors 212 are formed around the contact 211. However, it goes without saying that the number of chip capacitor accommodating parts 213 and chip capacitors 212 can be changed as needed. In addition, the filter capacitance of the contact unit may be changed by changing the capacitance of each of a plurality of chip capacitors connected in parallel with each other.

Although the present invention has been described above with specific details and limited examples, such as specific components, the above embodiments are only provided to help a more general understanding of the present invention, and the present invention is not limited thereto, and the present invention Those skilled in the art can make various modifications and variations from these descriptions.

Therefore, the spirit of the present invention should not be limited to the above-described embodiments, and not only the claims described below, but also all modifications equivalent or equivalent to these claims belong to the scope of the spirit of the present invention. something to do.

10, 20: cable assembly
11, 21: cable
100, 200: filter connector
110, 210: contact unit
111, 211: contact
112, 212: chip capacitor
113, 213: chip capacitor accommodating part
114, 214: shield sleeve
115, 215: ground wire
116, 216: inductor
120, 220: insulation block
130, 230: connector shell
140: connector housing

Claims (8)

As a contact unit for a filter connector,
contact,
A chip capacitor accommodating portion made of an insulating material and disposed around the contact;
a plurality of chip capacitors accommodated in the chip capacitor accommodating portion and arranged to surround the contact;
an inductor disposed adjacent to the chip capacitor accommodating portion and electrically connected to the contact; and
ground wire
including,
Each of the plurality of chip capacitors includes a pair of external electrodes, one of the pair of external electrodes is electrically connected to the contact, and the other of the pair of external electrodes is electrically connected to the ground wire. felled,
Contact unit for filter connector. According to claim 1,
A shield sleeve mounted around the contact to surround the chip capacitor accommodating portion, the plurality of chip capacitors, and the inductor;
wherein the plurality of chip capacitors are electrically connected to the ground wire through the shield sleeve. According to claim 1,
The contact unit for a filter connector, wherein the contact includes a pin portion. According to claim 1,
The contact unit for a filter connector, wherein the contact includes a socket portion. According to claim 1,
A contact unit for a filter connector, wherein the chip capacitor accommodating portion has a through hole configured to insert the contact along an axial direction and an accommodating groove configured to accommodate the plurality of chip capacitors along a circumferential direction. . According to claim 1,
The contact unit for a filter connector according to claim 1 , wherein a plurality of chip capacitor accommodating portions are disposed along an axial direction of the contact. According to claim 6,
The contact unit for a filter connector, wherein the inductor is interposed between the plurality of chip capacitor accommodating portions. As a cable assembly having a filter function,
connector shell,
An insulating block accommodated in the connector shell and having at least one hole formed therein,
at least one contact unit configured to be mounted in at least one hole formed in the insulating block; and
A cable configured to be coupled to the connector shell
including,
The at least one contact unit,
contact,
A chip capacitor accommodating portion made of an insulating material and disposed around the contact;
a plurality of chip capacitors accommodated in the chip capacitor accommodating portion and arranged to surround the contact;
an inductor disposed adjacent to the chip capacitor accommodating portion and electrically connected to the contact; and
ground wire
including,
Each of the plurality of chip capacitors includes a pair of external electrodes, one of the pair of external electrodes is electrically connected to the contact, and the other of the pair of external electrodes is electrically connected to the ground wire. felled,
cable assembly.

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