JP2007305452A - Electric connector for coaxial cables - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To collectively connect center conductors 12a of cables to a plurality of electrically conductive terminals 13 inexpensively and with high quality. <P>SOLUTION: An electric connector for coaxial cables has a constitution in which a solder recess 16 for holding a surplus 14a of a long shape solder 14 therein is formed on an insulating housing 11, and the solder recess 16 holds the solder surplus 14a excessively supplied to a bonding portion between the electrically conductive terminal 13 and the central conductor 12a of the cable. Thus, it is prevented that the solder surplus 14a flows to the adjacent electrically conductive terminal 13 or the adjacent central conductor 12a of the cable, and it is prevented that short circuit occurs between the adjacent electrically conductive terminals 13 or between the adjacent conductors 12a of the cables, which cuts an additional process such as a rework process. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electrical connector for a coaxial cable in which coaxial cable center conductors are collectively connected to a plurality of conductive terminals via a long solder material.

  Conventionally, coaxial cables are collectively connected to an electrical connector. For example, in the following Patent Document 1 (Japanese Patent Application Laid-Open No. 2000-77123), a plurality of conductive terminals (contacts) are arranged along the longitudinal width direction of an elongated insulating housing. After a long solder material (solder bar) is disposed along the longitudinal width direction of the insulating housing, which is the arrangement direction of the conductive terminals, the long solder material is heated and melted by the heater head. The collective connection of coaxial cable center conductors is performed.

  When connecting a plurality of conductive terminals in this way, a long solder material (solder bar) is first set on the insulating housing, and then the coaxial cable center conductor is set thereon, and then the heating surface of the heater head In addition to contacting the central conductor with the central conductor, the coaxial cable central conductor is arranged on the conductive terminals arranged on the insulating housing, and a long solder material is placed thereon to place the heater head into the long solder material. The coaxial cable center conductors can be collectively connected by any structure or method thereof. According to such a structure or method of collective connection to the conductive terminals, the soldering operation of the coaxial cable center conductor to the conductive terminals can be simplified or facilitated, and the connection reliability of the electrical connector can be improved. There are advantages.

  However, in the conventional electrical connector described above, when the position of the long solder material (solder bar) is shifted in the longitudinal direction, or when the long solder material is formed, the length is long. If it becomes too much, for example, as shown in FIG. 6, the solder material 2 is excessive with respect to the conductive terminals arranged at both end positions in the longitudinal width direction (left and right direction in FIG. 6) of the electrical connector 1. May be supplied. That is, when the amount of solder supplied to the connection portion between the conductive terminals (contacts) 3 disposed at both ends and the coaxial cable center conductor 4 becomes excessive, the excess amount of the solder material 2 is increased to the right in the figure. May flow toward the conductive terminal 5 and the coaxial cable center conductor 6 adjacent to each other, and an electrical short circuit may occur between them. When such an electrical short circuit occurs, the connector does not perform its normal normal electrical connection function, and an additional process such as rework is required.

JP 2000-77123 A

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electrical connector for a coaxial cable that can reliably perform a collective connection of a coaxial cable center conductor to a conductive terminal, and can be performed with high quality and efficiency. .

  In order to achieve the above object, in the electrical connector for cables according to the present invention, a plurality of conductive terminals are arranged at an appropriate pitch interval along the longitudinal width direction of the elongated insulating housing, and the length of the insulating housing is increased. In the coaxial cable electrical connector in which the coaxial cable center conductor is collectively connected to each of the conductive terminals using a long solder material arranged so as to extend along the width direction, the insulating housing includes: A solder reservoir that accommodates a surplus of the long solder material is provided at or around the conductive terminal.

  According to the electrical connector for a cable having such a configuration, even when the amount of solder supplied to the connection portion between the conductive terminal and the cable center conductor becomes excessive, the excess excess solder material is accumulated in the solder pool. By being accommodated in the section, the flow to the adjacent conductive terminal or cable center conductor side is prevented.

  As described above, the cable electrical connector according to the present invention is provided with a solder reservoir for accommodating the surplus of the elongated solder material in the insulating housing, and is excessive with respect to the connection portion between the conductive terminal and the cable center conductor. Since the supplied solder material is accommodated in the solder reservoir, it is configured to prevent the flow of excess solder material to the adjacent conductive terminal or cable center conductor side. Prevent electrical shorts between conductors to ensure electrical connection. Further, additional processes such as a rework process can be reduced, and the central connection of the cable center conductors to a plurality of conductive terminals can be performed at low cost and with high quality.

  Hereinafter, an embodiment in which the present invention is applied to a plug connector to which a coaxial cable is connected will be described in detail with reference to the drawings.

  The plug connector 10 shown in FIGS. 1 to 4 includes an insulating housing 11 formed of an elongated insulating member, and is arranged at an appropriate pitch interval along the longitudinal width direction of the insulating housing 11. A plurality of conductive terminals (contacts) 13, 13,... Are embedded in the terminal holding portions 11a, 11a,. In this way, a plurality of conductive terminals 13 are arranged at an appropriate pitch interval along the longitudinal width direction of the insulating housing 11, and the terminal portion of the coaxial cable 12 is soldered to each of the conductive terminals 13. It is connected.

  That is, the cable center conductor 12a and the cable outer conductor 12b are exposed at the end portion of the coaxial cable 12 by peeling off the covering material, and the cable center conductor 12a disposed along the axial center thereof. The cable outer conductor 12b, which is soldered to each of the conductive terminals 13 described above and is disposed so as to surround the outer peripheral side of the cable center conductor 12a, is sandwiched up and down by a pair of ground bars 11b and 11b. It is held like that.

  At this time, the solder connection of the cable center conductor 12a to each of the conductive terminals 13 described above is performed by using an elongated plate-like solder bar (long solder material) 14 as shown in FIGS. The cable center conductor 12a is connected to all the conductive terminals 13 at once. That is, in the terminal holding portion 11a and each conductive terminal 13 of the insulating housing 11, a solder material positioning groove 15 capable of accommodating the solder bar 14 extends over almost the entire length in the longitudinal width direction of the insulating housing 11. When the solder connection is made, first, the solder bar 14 is mounted in the solder material positioning groove 15 and set so as to extend in the longitudinal width direction. The cable center conductor 12a is set to be placed. Then, the heater head HD disposed at the upper position is lowered, and the heating surface HD1 is brought into contact with the cable center conductor 12a. As a result, the solder bar 14 is melted over its entire length, and the cable center conductors 12a are collectively connected to all the conductive terminals 13.

  At this time, the solder reservoir 16 that accommodates the excess portion of the solder bar (long solder material) 14 has a concave groove shape at both end portions in the longitudinal width direction of the terminal holding portion 11a of the insulating housing 11 described above. It is formed in this way. The solder reservoir 16 is disposed so as to be adjacent to the outer sides of both end conductive terminals 13a, 13a located at both ends in the longitudinal width direction of the plurality of conductive terminals 13 described above. Each of these solder reservoirs 16 has an arrangement relationship intersecting with the above-described solder material positioning groove 15 in a direction substantially perpendicular to the solder material positioning groove 15, and is formed at substantially the same depth as the solder material positioning groove 15. The depth may be shallower or deeper than the solder material positioning groove 15.

  And by providing such a solder pool part 16, the outer side surface in the longitudinal width direction of each said both-ends conductive terminal 13a, 13a is made into the conductor exposed surface 13b exposed toward the outside, The excessive solder material 14a when the above-described solder bar (long solder material) 14 is excessively melted is stored in the above-described solder reservoir 16 and the conductor exposed surface 13b of each of the both-end conductive terminals 13a. It comes to be attached to.

  That is, according to the above-described embodiment, the set position of the solder bar (long solder material) 14 is shifted in the longitudinal direction, or the length when the solder bar 14 is formed becomes too long. When the amount of solder supplied to the connecting portion between the both-end conductive terminals 13a, 13a and the cable center conductor 12a becomes excessive due to such reasons, the excess surplus solder material 14a becomes the solder pool portion 16. Therefore, the flow of the excess solder material 14a toward the adjacent conductive terminal 13 or the cable center conductor 12a is well prevented, thereby avoiding the electrical short circuit phenomenon that has conventionally occurred. It is like that.

  Further, in another embodiment according to FIG. 5 in which the same reference numerals are assigned to the same components as those in the above-described embodiment, the solder reservoirs 17 are provided in the both-end conductive terminals 13a and 13a themselves. Also in such other embodiments, substantially the same operations and effects as the above-described embodiments can be achieved.

  Although the invention made by the present inventor has been specifically described based on the embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. Needless to say.

  For example, in the above-described embodiment, an elongated plate-like solder material is used as the long solder material, but other solder materials such as a rod-like or thread-like solder material can naturally be used. . Further, the present invention can be similarly applied even when such a long solder material is set on the cable center conductor and the heater head is brought into contact with the long solder material.

  Furthermore, although the above-described embodiment is an application of the present invention to a plug connector, the present invention is not limited thereto and can be similarly applied to other electrical connectors such as a receptacle connector. Is.

  Furthermore, the present invention can be similarly applied to an electrical connector in which a plurality of coaxial cables and insulated cables are mixed.

  The present invention can be widely applied to a wide variety of cable electrical connectors used in various electrical devices.

It is an external appearance perspective explanatory view showing the state just before performing the collective connection of the electrical connector for coaxial cables concerning one Embodiment of this invention using a heater head. FIG. 2 is an external perspective view illustrating an enlarged portion A in FIG. 1. It is an expanded sectional view along the BB line in FIG. It is an expanded sectional view of the solder connection part along CC line in FIG. 3 in the state after a solder connection. FIG. 5 is an enlarged cross-sectional view corresponding to FIG. 4 in another embodiment of the present invention. It is an expanded sectional view of the solder connection part in the electrical connector (plug connector) of the conventional product.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10: Plug connector 11: Insulation housing 11a: Terminal holding part 11b: Ground bar 12: Coaxial cable 12a: Cable center conductor 12b: Cable outer conductor 13: Conductive terminal (contact)
13a: Conductive terminals on both ends 13b: Conductor exposed surface 14: Solder bar (long solder material)
14a: Surplus solder material 15: Solder material positioning groove 16: Solder reservoir 17: Solder reservoir HD: Heater head HD1: Heating surface

Claims (6)

A plurality of conductive terminals are arranged at an appropriate pitch interval along the longitudinal width direction of the elongated insulating housing, and
In the coaxial cable electrical connector in which the coaxial cable center conductor is collectively connected to each of the conductive terminals by using a long solder material arranged so as to extend along the longitudinal width direction of the insulating housing,
An electrical connector for a coaxial cable, wherein a solder reservoir portion that accommodates a surplus of the long solder material is provided around the conductive terminal or the conductive terminal.   2. The electrical connector for a coaxial cable according to claim 1, wherein the solder reservoir is formed in a groove shape that is recessed adjacent to at least one of the conductive terminals.   3. The coaxial cable electrical connector according to claim 2, wherein the solder reservoir is provided so as to expose a side surface of the conductive terminal to the outside. In the insulating housing, a solder material positioning groove for holding the long solder material is recessed so as to extend along the longitudinal width direction,
The said solder pool part is formed so that it may extend in the direction substantially orthogonal to the said longitudinal width direction at the substantially same depth as the said solder material positioning groove | channel. The electrical connector for coaxial cables according to any one of 3 above.   2. The coaxial cable electrical connector according to claim 1, wherein the solder reservoir is disposed at both end positions in the longitudinal width direction of a plurality of conductive terminals. 3. The coaxial cable electrical connector according to claim 5, wherein the solder reservoir is provided at a conductive terminal disposed at both end positions in the longitudinal width direction.

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