Patent Application
20220077615
This application claims the priority benefit of Korean Patent Application No. 10-2020-0113948 filed on Sep. 7, 2020, and Korean Patent Application No. 10-2021-0096522 filed on Jul. 22, 2021, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein by reference for all purposes.
The present invention relates to electrical connectors and cable assemblies including the same, and more specifically, to electrical connectors for use with coaxial cables.
A connector is a type of component that allows or blocks an electrical connection. Connectors are used in various electromechanical devices such as automobiles or home appliances to enable an electrical and/or physical connection between a plurality of electronic components. Similarly, a cable assembly typically includes a connector and a cable that are connected to each other. The cable may move in a longitudinal direction of the connector and be inserted into the connector. In the case of a coaxial cable and an associated connector, while the cable is inserted into the connector during assembly, a conducting wire of the cable and a center contact of the connector must be physically and electrically connected to each other. This process can be time consuming, costly and/or unreliable.
Accordingly, there is a need for improved solutions for achieving a stable connection between a conducting wire of a cable and a center contact of a connector while facilitating the insertion of the cable into the connector.
According to an embodiment of the present disclosure a connector for connecting to a cable having a conducting wire is provided. The connector includes an outer shield, a holder and a center contact. The holder is arranged within the shield and receives the center contact therein. adapted to receive the cable. The center contact receives and electrically contacts the conducting wire, with at least a portion of the center contact being elastically deformed by the conducting wire as it is inserted into the center contact.
The invention will now be described by way of example with reference to the accompanying Figures, of which:
Exemplary embodiments of the present disclosure will be described hereinafter in detail with reference to the attached drawings, wherein the like reference numerals refer to the like elements. The present disclosure may, however, be embodied in many different forms and should not be construed as being limited to the embodiment set forth herein; rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the concept of the disclosure to those skilled in the art.
In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments.
It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawing.
Referring to
In the exemplary embodiment, the cable 11 and the connector C may be coaxially connected to each other. The direction in which the cable 11 is inserted into the connector C is the +x direction, and will be referred to as “forward” herein. On the other hand, the −x direction, which is opposite to the direction in which the cable 11 is inserted into the connector C, will be referred to as “backward”. A central axis A of the connector C may be formed in the x-axial direction, and pass through the conducting wire of the cable 11.
The cable 11 may be inserted into and mounted on the connector C. A user may fasten the cable 11 and the connector C through the cover 15 and at the same time perform a shielding function, while the cable 11 is inserted into the connector C. The cable 11 may include a cover layer 111, a conducting wire support 112 covered by the cover layer, a conducting wire 113 supported by the conducting wire support, and a metal shell 114 provided between the cover layer and the conducting wire support.
The connector C may support the cable 11 and includes a shield 12 forming the external surface of the connector, a holder 13 provided inside the shield and supported by the shield, and a center contact 14 supported by the holder. The holder 13 may be mounted inside the shield 12 and support the center contact 14. The holder 13 may be fixed to an inner wall of the shield 12. The holder 13 may have a hollow interior opening 13a for receiving the center contact 14 therein.
The cover layer 111 may protect the conducting wire 113 and the conducting wire support 112. The conducting wire support 112 may have a larger diameter than the conducting wire 113, and be held by the holder 13. The conducting wire support 112 may determine an insertion distance of the conducting wire 113 with respect to the center contact 14. The conducting wire support 112 may include an insulating material. The conducting wire 113 may be inserted into the center contact 14. The metal shell 114 may be connected to the cover 15, as described herein, to electrically serve as a ground.
The state of the shield 12 may be changed from an initial state to a compressed state by an external force. When the shield 12 is in the initial state, the cable 11 may be freely moveable within the inner space of the shield 12. When the cable 11 is completely inserted into the shield 12, the user may seat the cover 15 on the cable and then fix the cover by deforming the shield. The shield 12 may include a shield body 121 for receiving the holder 13, and a shield arm 122 extending from the shield body for being deformed by an external force to support or retain the cover 15. In the exemplary embodiment, a pair of shield arms 122 may be provided.
The center contact 14 may have a structure that is to be in contact with the outer surface of the conducting wire 113 while the conducting wire is inserted into the center contact 14 in the x-axial direction. According to this structure, while the cable 11 is inserted into the connector C, the physical connection between the conducting wire 113 and the center contact 14 may be automatically implemented. In other words, the connector assembly 1 does not require a separate process for implementing the physical connection between the conducting wire 113 and the center contact 14. The center contact 14 may include a plurality of contact points to be in contact with the conducting wire 113. The contact points refer to portions of the center contact 14 that are in contact with the conducting wire 113. The number of contact points may be equal to the number of contact arms, as set forth herein.
A front body 141 of the center contact 14 may be held by the holder 13. The front body 141 may set a distance by which the center contact 14 is inserted into the holder 13. The front body 141 may have a pillar shape having a space therein. A rear body 142 of the center contact 14 may be provided at a position apart from the front body 141 backward, that is, in the −x direction. A diameter d1 of the conducting wire 113 may be smaller than a diameter d2 of each of the front body 141 and the rear body 142. The front body 141 and the rear body 142 may be spaced apart from the conducting wire 113.
A plurality of contact arms 143 may connect the front body 141 and the rear body 142. The plurality of contact arms 143 may have a shape that is convex toward the conducting wire 113. For example, a contact arm positioned in the +z direction with respect to the conducting wire 113 may have a shape that is convex in the −z direction. The plurality of contact arms 143 may have a shape that is convex in a direction toward the central axis A of the connector C. The plurality of contact arms 143 may have a shape that is convex in a direction away from the inner surface of the holder 13. The plurality of contact arms 143 may be in contact with the conducting wire 113.
The plurality of contact arms 143 may be elastically deformed outward by the conducting wire 113 while the conducting wire is inserted into the center contact 14. In response to the elastic deformation, a restoring force may act to bring the plurality of contact arms 143 to close contact with the conducting wire 113. For example, a contact arm positioned in the +z direction with respect to the conducting wire 113 may be elastically deformed in the +z direction by the conducting wire 113, and the restoring force may act in the −z direction such that the stable connection between the contact arm and the conducting wires 113 may be maintained.
The plurality of contact arms 143 may be arranged at equal intervals in the circumferential direction about the central axis A of the connector C. For example, two contact arms may be arranged at 180-degree intervals, three contact arms may be arranged at 120-degree intervals, four contact arms may be arranged at 90-degree intervals, and six contact arms may be arranged at 60-degree intervals. According to this structure, a resultant force of the forces applied from the plurality of contact arms 143 to the conducting wire 113 may be substantially approximate to “0”, and the conducting wire may be maintained at a position parallel to the central axis A of the connector C. For example, when the number of the plurality of contact arms 143 is even, at least two of the plurality of contact arms may be positioned opposite to each other based on the conducting wire 113. The direction of the force applied by one of the two contact arms to the conducting wire 113 may be opposite to the direction of the force applied by the other contact arm to the conducting wire.
A contact head 144 of the center contact 14 may extend forward from the front body 141. The contact head 144 may have a shape to be connected to another connector. For example, the contact head 144 may have a shape of a receptor for receiving a rod formed in a center contact of the other connector. The contact head 144 may alternatively have a shape of an elongated rod. The contact head 144 may have a diameter smaller than that of the front body 141. According to this structure, a step may be formed between the contact head 144 and the front body 141, and the step may be held by the holder 13.
A contact base 145 of the center contact 14 may extend backward from the rear body 142. The contact base 145 may have a shape that is wider toward the rear. According to this shape, when the conducting wire 113 enters the center contact 14 while not being aligned therewith, the contact base 145 may guide the conducting wire 113 into the rear body 142.
The cover 15 may be fixed by the shield 12 while being placed on the upper side of the cable 11. The cover 15 may include a cover body 151 seated on the cover layer 111, and cover projections or sharpened tines 152 extending from the cover body and penetrating through the cover layer and connecting to the metal shell 114. The cover 15 may be physically fixed to the upper side of the cover layer 111, thereby not only serving to fix the cover layer so as not to move in the axial direction, but also electrically serving as a ground. For example, the cover 15 may block the intrusion of external noise into the conducting wire 113, or block the external leakage of a signal of the conducting wire.
Referring to
Hereinafter, the description of the contact arms will be provided based on the second contact arm 143b. The contact arm 143b may include an arm body 1432b having a shape that is convex toward the conducting wire 113 (see
The arm body 1432b may have, toward the rear, a shape that is more spaced apart from the central axis A (see
For example, the arm head 1431b may have a shape that is wider from the arm body 1432b toward the front body 141 or the rear body 142. The thickness of a portion of the arm head 1431b connected to the front body 141 or the rear body 142 may be greater than the thickness of a portion of the arm head 1431b connected to the arm body 1432b. As used herein, the “thickness” refers to a length measured in the circumferential direction based on the central axis of the connector C. According to this shape, the area of a portion that is deformed relatively greatly may be large, and thus the durability of the contact arm may be improved.
The contact head 144 may include a contact head body 1441 extending from the front body 141, and a pair of head arms 1442 connected to the contact head body 1441. The pair of head arms 1442 may receive a rod (not shown) of another connector.
Referring to
One of the plurality of contact arms 2431 and 2432, for example, the contact arm 2431, may have a shape in which both ends are connected to the front body 241 and the rear body 242, respectively. Meanwhile, the other of the plurality of contact arms 2431 and 2432, for example, the contact arm 2432, may have a shape in which one end thereof is connected to the front body 241 and a rear end thereof is spaced apart from the rear body 242 (i.e., may comprise a cantilevered arm).
The contact arm 2432 (and/or the contact arm 2431) may include an arm body 2432b to be in contact with the conducting wire 113 (see
It should be appreciated for those skilled in this art that the above embodiments are intended to be illustrated, and not restrictive. For example, many modifications may be made to the above embodiments by those skilled in this art, and various features described in different embodiments may be freely combined with each other without conflicting in configuration or principle.
Although several exemplary embodiments have been shown and described, it would be appreciated by those skilled in the art that various changes or modifications may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.
As used herein, an element recited in the singular and proceeded with the word “a” or “an” should be understood as not excluding plural of said elements or steps, unless such exclusion is explicitly stated. Furthermore, references to “one embodiment” of the present disclosure are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Moreover, unless explicitly stated to the contrary, embodiments “comprising” or “having” an element or a plurality of elements having a particular property may include additional such elements not having that property.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2020-0113948 | Sep 2020 | KR | national |
| 10-2021-0096522 | Jul 2021 | KR | national |
