KR102648900B1 - 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 including the same. 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 a plurality of chip capacitor accommodating portions accommodated in the chip capacitor accommodating portion and arranged to surround the periphery of the contact. It is disposed adjacent to the chip capacitor, the chip capacitor receiving portion, and includes an inductor and a ground wire 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 a contact, and the other of the pair of external electrodes is electrically connected to a ground wire.

Description

Contact unit for filter connector and cable assembly including 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. More specifically, it relates to a contact unit that can be removably mounted on a filter connector and a cable assembly including the same.

Communication cables with connectors are used to transmit electrical signals between electronic devices. Electrical signals transmitted through such communication cables may include signals in unnecessary frequency bands, that is, noise. If such noise is included, it may also affect the performance of electronic devices.

Accordingly, filter connectors with a filter function are widely used to remove noise included in electrical signals.

A typical filter connector is a monolithic planar capacitor type in which electrodes are inserted inside a planar block made of dielectric, and a filter sleeve is coupled around the contact and connected to ground to the connector shell. Tubular capacitor types and the like are known. However, in the monolithic planar capacitor type filter connector, each contact has no choice but to perform a filter function for the same frequency band, and there are limitations in maintaining and repairing individual contacts. In addition, the tubular capacitor type filter connector not only has a complex internal structure but is also expensive, so it has the limitation of being used only for special purposes.

To solve these problems with existing filter connectors, continuous technological development is being carried out.

For example, in Patent Document 1 (Patent Publication No. 10-1441824) regarding the filter assembly of a communication connector, 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 costs. It is equipped with a structure in which pins (contacts) are connected to it. However, even according to Patent Document 1, if a problem occurs in an individual contact, the entire circuit board must be replaced, which limits maintenance efficiency and cost.

Accordingly, there is still a need for the development of a filter connector that has a simple structure and can reduce manufacturing and maintenance costs.

Registered Patent Publication No. 1441824 (2014.09.11)

The present invention is intended to solve the problems of the prior art described above, and its purpose is to provide a contact unit for a filter connector that can reduce manufacturing costs with a simple structure.

In addition, the purpose is to provide a contact unit for a filter connector that has a filter function and can be removably mounted on the connector, allowing it to selectively perform a filter function for frequencies of various bands when mounted on the connector.

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 a plurality of chip capacitor accommodating portions accommodated in the chip capacitor accommodating portion and arranged to surround the periphery of the contact. It is disposed adjacent to the chip capacitor, the chip capacitor receiving portion, and includes an inductor and a ground wire 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 a contact, and the other of the pair of external electrodes is electrically connected to a ground wire.

The contact unit for a filter connector according to an embodiment of the present invention may further include a shield sleeve mounted to surround the chip capacitor receiving portion, a plurality of chip capacitors, and an inductor around the contact, and the plurality of chip capacitors may have a 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 therethrough may be formed in the chip capacitor accommodating portion along the axial direction, and a receiving groove configured to accommodate a plurality of chip capacitors may be formed along the circumferential direction. there is.

According to one embodiment of the present invention, a plurality of chip capacitor accommodating parts may be arranged along the axial direction of the contact. At this time, the inductor may be interposed between a plurality of chip capacitor accommodating parts.

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, and at least one configured to be mounted in at least one hole formed in the insulating block. It includes a cable configured to couple to the contact unit and the connector shell. Here, at least one contact unit is 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 arranged to surround the periphery of the contact, and a chip capacitor. It is disposed adjacent to the receiving portion and includes an inductor and a ground wire disposed to be electrically connected to the contact. Additionally, the plurality of chip capacitors each include a pair of external electrodes, one of the pair of external electrodes is electrically connected to a contact, and the other of the pair of external electrodes is electrically connected to a ground wire.

According to one embodiment of the present invention, the contact unit for a filter connector has a simple structure, thereby reducing the manufacturing cost of the filter connector. Furthermore, the contact unit for the filter connector can be removably mounted on the connector, so if there is a problem with an individual contact, maintenance and repair costs can be reduced by replacing only the contact in which the problem occurred.

In addition, the frequency band to be filtered can be set for each contact unit for the filter connector, making it possible to implement a filter connector that can selectively perform a filter function for frequencies in various bands.

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

1 is a diagram schematically showing a cable assembly according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of a filter connector according to an embodiment of the present invention.
Figure 3 is a perspective view of a contact unit for a filter connector according to an embodiment of the present invention.
Figure 4 is a cross-sectional view of a contact unit for a filter connector according to an embodiment of the present invention.
Figure 5 is a cross-sectional view showing a chip capacitor and a chip capacitor accommodating portion mounted on a contact unit for a filter connector according to an embodiment of the present invention.
Figure 6 is a diagram schematically showing a cable assembly according to another embodiment of the present invention.
Figure 7 is a cross-sectional view of a filter connector according to another embodiment of the present invention.
Figure 8 is a perspective view of a contact unit for a filter connector according to another embodiment of the present invention.
Figure 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, preferred embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention.

In order to clearly explain the present invention, descriptions of parts unrelated to the present invention have been omitted, and like reference numerals are assigned to like components throughout the specification.

In this specification, when one component is described as being “connected” to another component, this means not only that the two components are connected by directly touching each other, but also that they are connected to each other with the other component in between. In addition, expressions such as "comprising", "comprising", etc. used in the present specification are open terms that imply the possibility of including other elements or embodiments unless otherwise stated in the phrase or sentence containing the expression ( It should be understood as open-ended terms.

The size, thickness, position, etc. of each component shown in the drawings are shown arbitrarily for convenience of explanation, and therefore the present invention is not necessarily limited to what is shown. That is, the specific shape, structure, and characteristics described in the specification can be changed and implemented from one embodiment to another without departing from the spirit and scope of the present invention, and the location or arrangement of individual components is also within the spirit and scope of the present invention. It should be understood that changes can be made without departing from the scope.

Accordingly, the detailed description described below is not to be taken in a limiting sense, and the scope of the present invention should be taken to encompass the scope of the claims and all equivalents thereof.

1 is a diagram schematically showing 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 the 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, especially the contact unit constituting the filter connector 100. Hereinafter, the filter connector 100 and the contact unit constituting the same will be described in detail.

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

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

The contact unit 110 includes a pin-shaped contact, and when the filter connector 100 is combined with another connector (i.e., a female connector), it is electrically connected to the corresponding contact (i.e., a socket-shaped contact) to conduct electricity. Constructs a path through which signals are transmitted. The contact units 100 according to this embodiment each have a filter function and are configured to be removably mounted on the filter connector 100. The detailed configuration of the contact unit 110 will be described later.

The insulating block 120 has the function of accommodating and stably fixing the contact unit 110. To this end, a plurality of through holes having a size that allows the contact unit 110 to be stably coupled along the axial direction (left and right directions in the drawing) are formed in the insulating block 120. The insulating block 120 has a shape suitable for the shape of the filter connector 100, for example, a cylindrical shape, and is made of an insulating material to prevent current from being transmitted to the outside even when a high-voltage current flows or a large amount of data is transmitted. It can be formed as

The connector shell 130 forms a space inside which can accommodate the contact unit 110 and the insulating block 120. The connector shell 130 may be formed in 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 be provided with a fastening structure that can be stably coupled when the filter connector 100 is coupled with another connector (i.e., a female connector). Additionally, the connector shell 130 may be configured to be coupled to 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 inside to accommodate the components constituting the filter connector 100.

Figure 3 is a perspective view of a contact unit for a filter connector according to an embodiment of the present invention, and Figure 4 is a cross-sectional view of a contact unit for a filter connector according to an embodiment of the present invention. With reference to these, the filter connector according to this embodiment is shown. The 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 receiving 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 this embodiment is formed in a pin shape so that it can be inserted and connected to a socket-shaped contact, which will be described later. The contact 111 may include a pin portion 111a configured to be directly connected to a socket-type contact and a connection portion 111b connected thereto. When an electrical signal is input to the pin portion 111a of the contact 111, the electrical signal may be transmitted to the cable 11 through the connection portion 111b, and in this process, to the chip capacitor 112 and the inductor 116, which will be described later. Noise in a preset frequency band can be removed by a filter.

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

First, to describe the chip capacitor 112, 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 is connected to the ground wire 115, which will be described later. arranged to be connected. According to this embodiment, a plurality of chip capacitors 112 are arranged to surround the contact 111 and may be connected in parallel to each other. Meanwhile, the chip capacitor 112 according to this embodiment may be a multi-layer ceramic capacitor (MLCC).

The chip capacitor accommodating part 113 of the contact unit 110 according to this embodiment is mounted on the contact 111 and is configured to stably arrange the chip capacitor 112 around the contact 111.

FIG. 5 is a diagram showing a chip capacitor and a chip capacitor accommodating portion mounted on 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 in the central portion. Accordingly, a through hole through which the contact 111 can be inserted is formed. Additionally, a receiving groove in which a plurality of chip capacitors 112 can be accommodated is formed along the outer periphery of the chip capacitor receiving portion 113. In this embodiment, four receiving grooves are formed in one chip capacitor receiving portion 113 to accommodate four chip capacitors 112.

The receiving groove of the chip capacitor receiving portion 113 allows the external electrodes on both sides of the chip capacitor 112 to be electrically connected by directly or indirectly contacting each contact 111 and the shield sleeve 114, which will be described later. Both ends have an open shape. That is, a plurality of receiving grooves may be formed along the outer periphery of the chip capacitor receiving portion 113 in a form penetrating perpendicular to the axial direction.

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

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

The inductor 116 of the contact unit 110 according to this 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 a pair of chip capacitor accommodating portions 113. Alternatively, the contact unit 110 may have only one chip capacitor receiving portion 113, and the inductor 116 may be disposed adjacent to it. Meanwhile, the inductor 116 may be made of a ferrite core, but the present invention is not limited thereto.

The shield sleeve 114 of the contact unit 110 according to this embodiment is configured to surround the chip capacitor 112 and the chip capacitor accommodating portion 113. Specifically, the shield sleeve 114 may be formed in a cylindrical shape surrounding the chip capacitor accommodating portion 113, a plurality of chip capacitors 112, and the inductor 116. Additionally, the shield sleeve 114 is made of a conductive material and can be electrically connected by directly or indirectly contacting 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 and performs 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 connects the plurality of chip capacitors 112 through the shield sleeve 114. 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 the direction toward the cable 11 when the contact unit 110 is mounted on the filter connector 100, and is connected to the 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, the other end of the ground wire 115 may be partially bent when the contact unit 110 is mounted on the filter connector 100.

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

According to an embodiment of the present invention described above, 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 is grounded. A filter can be formed by being electrically connected to the wire 115 and grounded. For example, when the inductor 116 is interposed between a pair of chip capacitor accommodating parts 113, a PI filter is formed, and only one chip capacitor accommodating part 113 is provided and an inductor ( When 116) is disposed, an LC filter is formed.

As such, according to one embodiment of the present invention, a contact unit having a PI filter or LC filter can be implemented with a simple structure, and a filter connector can be implemented by mounting it on a connector. In other words, a filter connector can be implemented simply by mounting the contact unit on a connector that does not have an existing filter function, making it possible to use the filter connector at low cost.

Contact units can be individually removably mounted on connectors, so if a problem occurs with a contact unit, maintenance and repairs can be performed by replacing only the contact unit without having to replace the entire connector.

Additionally, the capacity of the filter for each contact unit can be adjusted by changing the number of a plurality of chip capacitors connected in parallel or changing the capacity of each chip capacitor. Accordingly, by setting the filter capacity differently for each contact unit, a filter connector capable of performing a filter function for frequencies of various bands can be implemented.

Figure 6 is a diagram schematically showing a cable assembly according to another embodiment of the present invention, and Figure 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 differs from the filter connector 100 according to the previous embodiment in that it is a female connector, and the present embodiment will be described focusing on this difference.

First, referring to FIG. 6, the 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 on one or both ends of the cable 21 to transmit electrical signals to other electronic equipment.

Next, referring to FIG. 7, the filter connector 200 according to an embodiment of the present invention is a female connector with a filter function and may include a contact unit 210, an insulating block 220, and a connector shell 230. there is.

The contact unit 210 includes a socket-shaped contact, and when the filter connector 200 is combined with another connector (i.e., a male connector), it is electrically connected to the corresponding contact (i.e., a pin-shaped contact) to generate an electrical signal. Constructs a passage to transmit . Each of the contact units 200 according to this embodiment also has a filter function and is configured to be removably mounted on the filter connector 200.

In order to stably fix the contact unit 210, the insulating block 220 has 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 directions in the drawing). have The insulating block 220 may have, for example, a cylindrical shape and may be made of an insulating material.

The connector shell 230 forms a space inside which can accommodate the contact unit 210 and the insulating block 220. The connector shell 230 may be formed in the form of a circular tube and may be provided with a fastening structure that can be stably coupled when the filter connector 200 is combined with another connector (i.e., a male connector). Additionally, the connector shell 230 may be configured to be coupled to the cable 21. The connector shell 230 may have a flange for stable fastening as shown, but the present invention is not limited thereto.

Figure 8 is a perspective view of a contact unit for a filter connector according to another embodiment of the present invention, and Figure 9 is a cross-sectional view of a 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 this embodiment includes a contact 211, a chip capacitor 212, a chip capacitor accommodating part 213, a shield sleeve 214, and a ground wire. (215) and may include 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-shaped 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 can be inserted and a connection portion 211b connected thereto. The contact 211 may additionally include a cover 211c surrounding the end of the socket portion 211a. When an electrical signal is input into the socket portion 211a of the contact 211, the electrical signal can be transmitted to the cable 21 through the connection portion 211b, and in this process, it is filtered by a filter made of a chip capacitor 212, which will be described later. Noise in a preset frequency band can be removed.

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

That is, the plurality of chip capacitors 212 are accommodated in the chip capacitor receiving portion 213, so that the external electrode on one side is electrically connected to the contact 211, and the external electrode on the other side is connected to the ground wire through the shield sleeve 214. 215) is electrically connected to. Additionally, 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 as well, in order to connect the ground wire 215 to the shield of the cable 21, the other end of the ground wire 115 may be partially bent when the contact unit 210 is mounted on the filter connector 200. Additionally, an inductor 216 is disposed adjacent to the chip capacitor accommodating portion 213 where the plurality of chip capacitors 212 are accommodated so that the contacts 211 are electrically connected to each other. At this time, the inductor 216 may be interposed between a pair of chip capacitor accommodating portions 213 or may be disposed adjacent to one chip capacitor accommodating portion 213.

In this way, each of the plurality of chip capacitors 212 disposed around the contact 211 is grounded with one external electrode connected to the contact 211 and the other external electrode connected to the ground wire 215, and a plurality of chip capacitors 212 are connected to each other. The inductor 216 disposed adjacent to the chip capacitor 212 is electrically connected to the contact 211, thereby forming a PI filter or LC filter.

Meanwhile, in this embodiment, two chip capacitor accommodating parts 213 are arranged along the axial direction of the contact 211 with the inductor 216 in between, so that a total of eight chip capacitors 212 are arranged 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. Additionally, the filter capacity of the contact unit can be changed by changing the capacity of each of a plurality of chip capacitors connected in parallel.

Although the present invention has been described in terms of specific details such as specific components and limited embodiments, the above embodiments are provided only to facilitate a more general understanding of the present invention, and the present invention is not limited thereto. Anyone skilled in the art can make various modifications and variations from this description.

Therefore, the spirit of the present invention should not be limited to the above-described embodiments, and the claims described below as well as all modifications equivalent to or equivalent to the claims fall within 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 receiving portion
114, 214: shield sleeve
115, 215: ground wire
116, 216: inductor
120, 220: insulation block
130, 230: Connector shell
140: Connector housing

Claims (8)

A contact unit for a filter connector, comprising:
contact,
A chip capacitor receiving 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 periphery of the contact,
an inductor disposed adjacent to the chip capacitor accommodating portion and electrically connected to the contact;
ground wire
Including,
The plurality of chip capacitors each include 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. And
Further comprising a shield sleeve mounted to surround the chip capacitor receiving portion, the plurality of chip capacitors, and the inductor around the contact,
The plurality of chip capacitors are electrically connected to the ground wire through the shield sleeve,
Contact unit for filter connector. delete According to paragraph 1,
A contact unit for a filter connector, wherein the contact includes a pin portion. According to paragraph 1,
A contact unit for a filter connector, wherein the contact includes a socket portion. According to paragraph 1,
A contact unit for a filter connector in which a through hole configured to insert the contact therethrough is formed in the chip capacitor accommodating portion along an axial direction, and a receiving groove configured to accommodate the plurality of chip capacitors is formed along a circumferential direction. . According to paragraph 1,
A contact unit for a filter connector, wherein a plurality of the chip capacitor accommodating portions are arranged along the axial direction of the contact. According to clause 6,
A contact unit for a filter connector, wherein the inductor is interposed between the plurality of chip capacitor receiving portions. A cable assembly having a filter function, comprising:
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
Cable configured to be coupled to the connector shell
Including,
The at least one contact unit,
contact,
A chip capacitor receiving 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 periphery of the contact,
an inductor disposed adjacent to the chip capacitor accommodating portion and electrically connected to the contact;
ground wire
Including,
The plurality of chip capacitors each include 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. And
The at least one contact unit further includes a shield sleeve mounted to surround the chip capacitor receiving portion, the plurality of chip capacitors, and the inductor around the contact,
The plurality of chip capacitors are electrically connected to the ground wire through the shield sleeve,
Cable assembly.

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