JP2013258052A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a connector that can be easily manufactured while reducing costs.SOLUTION: A connector 10 comprises: plural cables 20; and a body 30 on which plural terminal sections 51 connected to a core wire 20a of one cable 20 of the plural cables 20 are parallely aligned. Plural cables 20 comprise: a coaxial cable 21 having a core wire 21a, an inner insulation coating layer 21b covering the core wire 21a, and a shield layer 21c covering an outer periphery of the inner insulation coating layer 21b; and a discrete cable 22 having a core wire 22a with a larger diameter than that of the core wire 21a of the coaxial cable 21, and an insulation coating layer 22b covering an outer periphery of the core wire 22a. A groove section 38a is provided at a portion at which the core wire 22a of the discrete cable 22 of a location section 38 of the body 30 is located.

Description

  The present invention relates to a connector.

  2. Description of the Related Art Conventionally, a connector having a housing that holds a plurality of contacts, a plurality of cables in which core wires are connected to each of the contacts by soldering, and a pair of ground bars that sandwich the plurality of cables is known. (For example, refer to Patent Document 1).

  In Patent Document 1, a coaxial cable having a center conductor, an inner insulator, an outer conductor, and a jacket and a ground cable having a center conductor, an outer conductor, and a jacket are used as the plurality of cables.

  Then, the outer conductor of the coaxial cable and the outer conductor of the ground cable have the same diameter, and the respective outer conductors are sandwiched between a pair of ground bars, thereby being conductively connected to a common ground bar. Further, by making the central conductor of the coaxial cable and the central conductor of the ground cable have the same diameter, batch soldering by pulse heat can be performed when the respective central conductors are conductively connected to the respective contacts.

JP 2008-166251 A

  However, although the above conventional technique can be easily manufactured, there is a problem that the manufacturing cost of the connector increases because a relatively expensive cable is used as the ground cable.

  Accordingly, an object of the present invention is to obtain a connector that can be easily manufactured while reducing costs.

  A first feature of the present invention is a connector comprising a plurality of cables and a body in which a plurality of terminal portions to which core wires of one of the plurality of cables are connected are arranged in parallel. The cable includes a core wire, an inner insulating coating layer that covers the core wire, a shield layer that covers the outer periphery of the inner insulating coating layer, and an outer insulating coating layer that covers the outer periphery of the shield layer. A coaxial cable used, a core wire having a diameter larger than the core wire of the coaxial cable, and an insulating coating layer covering an outer periphery of the core wire, and a discrete cable used as a ground cable, and the body includes: The terminal portion is provided side by side and includes a placement portion on which the core wires of the plurality of cables are placed, and the placement portion has a groove portion at a portion on which the core wires of the discrete cable are placed. It provided a summary of the.

  The gist of the second feature of the present invention is that the diameter of the shield layer of the coaxial cable and the diameter of the core wire of the discrete cable are substantially the same.

  According to a third aspect of the present invention, the groove is formed between adjacent terminal portions of the placement portion, and the core wire of the discrete cable is placed in the groove portion with the adjacent terminals. The gist is that they are connected to each part.

  The gist of the fourth feature of the present invention is that the side surface portions of the adjacent terminal portions are exposed in the groove portions.

  The gist of the fifth feature of the present invention is that the groove is formed in the terminal portion.

  The sixth feature of the present invention is summarized in that the groove portions have a pair of inclined surfaces that face each other and become narrower in the depth direction from the opening side of the groove portions.

  According to the present invention, a discrete cable whose core wire is larger in diameter than the core wire of the coaxial cable is used as the ground cable. That is, a relatively inexpensive discrete cable is used as the ground cable. Therefore, the manufacturing cost can be reduced. Further, the core wire of the discrete cable is placed in the groove formed in the placing portion of the body. Therefore, the height of the core wire and the terminal portion of the coaxial cable and the height of the core wire and the terminal portion of the discrete cable can be made substantially equal. As a result, when each core wire is connected to each terminal portion, batch soldering by pulse heat can be performed, and manufacture of the connector is facilitated.

1 is a perspective view showing a connector according to a first embodiment of the present invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a perspective view which shows the connector concerning 2nd Embodiment of this invention. It is CC sectional drawing of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that similar components are included in the following embodiments. Therefore, in the following, common reference numerals are given to those similar components, and redundant description is omitted.

(First embodiment)
As shown in FIG. 1, the connector 10 according to this embodiment includes a plurality of cables 20 and a plurality of terminal portions 51 to which the core wire 20 a of one of the plurality of cables 20 is connected. A body 30 made of synthetic resin. The body 30 is attached with a metal shell 40 for shielding electromagnetic noise.

  The cable 20 includes a plurality of coaxial cables 21 used as signal cables and a plurality of discrete cables 22 used as ground cables.

  The coaxial cable 21 includes a core wire 21a, an inner insulating coating layer 21b that covers the outer periphery of the core wire 21a, a shield layer 21c that covers the outer periphery of the inner insulating coating layer 21b, and an outer insulating coating layer that covers the outer periphery of the shield layer 21c. 21d. As shown in FIG. 1, the coaxial cable 21 exposes a core wire 21a, an inner insulating coating layer 21b, and a shield wire 21c in this order from the tip on one end side.

  The discrete cable 22 includes a core wire 22a having a diameter larger than that of the core wire 21a of the coaxial cable 21, and an insulating coating layer 22b covering the outer periphery of the core wire 22a. As shown in FIG. 1, the discrete cable 22 has a core wire 22a exposed at the end on one end side.

  As shown in FIG. 1, a plurality of contacts 50 having terminal portions 51 and terminal portions 52 are arranged in the body 30 approximately equally in the longitudinal direction. In the present embodiment, the body 30 includes a main body portion 31 in which a plurality of terminal portions 52 are arranged substantially evenly in the longitudinal direction, and extends to one end side in the short direction of the main body portion 31. And a cable support portion 32 arranged substantially evenly in the direction. A plurality of cables 20 are supported by the cable support portion 32. Moreover, the handle | steering-wheel part 34 is provided in the longitudinal direction both ends of the body 30, respectively.

  As shown in FIG. 1, the body portion 31 is formed with a fitting recess 34 that fits into a receptacle connector (not shown), and the terminal portion 52 of the contact 50 is exposed in the fitting recess 34. Yes. Then, by fitting a receptacle connector (not shown) into the fitting recess 34, the terminal portion 52 comes into contact with a terminal portion (not shown) of the receptacle connector, and the cable 20 and a cable on the receptacle connector side (not shown). Are electrically connected to each other. The terminal portion 52 is formed with a recess 52a, and the contact strength of the receptacle connector is elastically contacted with the recess 52a, thereby improving the coupling strength between the connector 10 and the receptacle connector.

  As shown in FIG. 1, the cable support portion 32 is formed with an accommodation recess 35 for accommodating the tip portion of the cable 20. The housing recess 35 is formed with a ground bar housing recess 36 for housing a pair of ground bars 61 and 62 described later, and a core wire housing recess 37 for housing the core wire 20 a of the cable 20.

  A terminal portion 51 is provided in the core wire housing recess 37, and a placement portion 38 on which the core wires 20a of the plurality of cables 20 are placed is formed. In the present embodiment, the placement portion 38 is formed by arranging the upper surface (front surface) of the terminal portion 51 so as to be exposed from the bottom surface in the core wire housing recess 37. By fixing the terminal portion 51 and the core wire 20a of the cable 20 by soldering, the core wire 20a of the cable 20 is supported by the cable support portion 32 while being electrically connected to the terminal portion 51. .

  Thus, in the present embodiment, the bottom surface of the core wire accommodating recess 37 including the exposed portion (upper surface) of the terminal portion 51 corresponds to the placement portion 38.

  The shell 40 is formed by punching and bending a metal plate, for example, and covers the main body 31 and the cable support 32 of the body 30.

  Furthermore, in this embodiment, the cable assembly 60 is formed by sandwiching the shield layer 21c of the coaxial cable 21 and the core wire 22a of the discrete cable 22 with plate-like ground bars 61 and 62 extending in the longitudinal direction. Yes. At this time, the shield layer 21c of the coaxial cable 21 and the core wire 22a of the discrete cable 22 are fixed to the ground bar 62 by soldering.

  In the present embodiment, the outer diameter of the shield layer 21c of the coaxial cable 21 and the outer diameter of the core wire 22a of the discrete cable 22 are substantially the same diameter, and all of them are sandwiched between the plate-like ground bars 61 and 62. The shield layer 21 c and the core wire 22 a are in contact with the ground bar 61 and the ground bar 62.

  Then, by electrically connecting the shell 40 and the ground bar 62, the shield wires 21c of all the coaxial cables 21, the core wires 22a of all the discrete cables 22, the ground bars 61 and 62, and the shell 40 are electrically connected. Will be connected. The shield wires 21b and 22b, the ground bars 61 and 62, and the shell 40 are grounded by connecting to a ground pattern (not shown).

  The connector 10 having the above configuration is formed as follows, for example.

  First, the cable assembly 60 is formed, and the cable assembly 60 is received in the ground bar receiving recess 36 of the cable support portion 32. And the core wire 20a of the cable 20 is fixed to the terminal part 51 by soldering. Next, the shell 40 attached to the body 30 and the ground bar 62 are electrically connected. Thus, the connector 10 is formed.

  In addition, the terminal part 51 and the terminal part 52 are provided in a part of the contact 50. For example, the terminal part 51 and the terminal part 52 can be formed by insert-molding the contact 50 in the body 30.

  Further, at least the surface of the terminal portion 51 exposed from the bottom surface in the core wire accommodating recess 37 of the contact 50 is subjected to surface treatment such as gold plating, tin plating, solder leveler, etc., so that solder wettability can be secured while preventing oxidation. Is preferable.

  Here, in the present embodiment, solder 70 such as thread solder or cream solder is used, and the core wire 20a of the cable 20 and the terminal portion 51 are soldered together by pulse heat (see FIG. 2).

  Specifically, the core wire 21 a of the coaxial cable 21 is soldered in a state where the core wire 21 a is placed on the surface of the terminal portion 51. On the other hand, the core wire 22 a of the discrete cable 22 is soldered to the two adjacent terminal portions 51 while being placed between the adjacent terminal portions 51 of the placement portion 38.

  In the present embodiment, the outer diameter of the core wire 22 a of the discrete cable 22 is larger than the outer diameter of the core wire 21 a of the coaxial cable 21. Therefore, the height of the core wire 21a of the coaxial cable 21 and the core wire 22a of the discrete cable 22 differ only by placing the core wire 22a of the discrete cable 22 between the adjacent terminal portions 51 of the placement portion 38. As a result, it becomes difficult to place the solder 70 such as thread solder or cream solder on the core wire 21a or the core wire 22a, and the soldering of the core wire 20a of the cable 20 and the terminal portion 51 cannot be easily performed. There is.

  Therefore, in the present embodiment, a substantially V-shaped groove portion 38a is provided in a portion of the placement portion 38 where the core wire 22a of the discrete cable 22 is placed, and the height of the core wire 21a and the height of the core wire 22a from the surface of the terminal portion 51 is increased. Can be aligned.

  In the present embodiment, the core wire 22 a of the discrete cable 22 is placed between the adjacent terminal portions 51 of the placement portion 38. Therefore, in this embodiment, the space between the adjacent terminal portions (terminal portions for connection to the core wire 22a) 51 of the placement portion 38 corresponds to a portion where the core wire 22a of the discrete cable 22 of the placement portion 38 is placed. To do. Therefore, a groove portion 38 a for placing the core wire 22 a of the discrete cable 22 is formed between adjacent terminal portions (terminal portions for connection to the core wire 22 a) 51 of the placement portion 38.

  The groove 38a is formed so as to extend in the short direction, and opens upward, and opens to one end in the short direction (on the ground bar receiving recess 36 side of the core wire receiving recess 37). In the present embodiment, the groove portions 38a having such a shape are formed at both ends of all the terminal portions 51, and the core wire 22a of the discrete cable 22 can be placed in any one of the groove portions 38a. Then, with the core wire 22a of the discrete cable 22 placed on the groove portion 38a, the core wire 22a and the terminal portion 51 are electrically connected by soldering the core wire 22a to the two terminal portions 51 with the solder 70, respectively. To be. At this time, the side part 51a of the adjacent terminal part 51 is exposed in the groove part 38a.

  In the present embodiment, the height of the core wire 21a and the core wire 22a from the surface of the terminal portion 51 is substantially set in a state where the core wire 21a is placed on the surface of the terminal portion 51 and the core wire 22a is placed in the groove portion 38a. The width and depth of the groove 38a are set so as to be the same.

  Thus, by aligning the height of the core wire 21a and the core wire 22a from the surface of the terminal portion 51, it becomes easy to place the thread solder, cream solder, or the like on the core wire 21a or the core wire 22a.

  By the way, in this embodiment, the outer diameter of the shield layer 21c of the concentric coaxial cable 21 and the outer diameter of the core wire 22a of the concentric discrete cable 22 are set to be substantially the same diameter. The shield layer 21c of the coaxial cable 21 and the core wire 22a of the discrete cable 22 are easily connected to the ground simply by being sandwiched between the plate-like ground bars 61 and 62. Therefore, when the shield layer 21c and the core wire 22a are sandwiched between the plate-like ground bars 61 and 62 and the coaxial cable 21 and the discrete cable 22 are straightly extended, the upper end of the large-diameter core wire 22a is higher than the upper end of the core wire 21a. Will also be located above. Therefore, in the present embodiment, by placing the core wire 21a of the coaxial cable 21 on the surface of the terminal portion 51 in a state of being bent upward, the height of the core wire 21a and the core wire 22a from the surface of the terminal portion 51 is increased. Aligned. In addition, you may make it align the height from the surface of the terminal part 51 of the core wire 21a and the core wire 22a by bending the core wire 22a of the discrete cable 22 below. Further, both the core wire 21a and the core wire 22a may be bent so that the heights of the core wire 21a and the core wire 22a from the surface of the terminal portion 51 are made uniform.

  As described above, in the present embodiment, the discrete cable 22 whose core wire 22a is larger in diameter than the core wire 21a of the coaxial cable 21 is used as the ground cable. That is, the relatively inexpensive discrete cable 22 is used as a ground cable with low noise resistance performance requirements. Therefore, it is possible to reduce the manufacturing cost while suppressing a decrease in noise performance of the connector 20 as much as possible. Further, the core wire 22 a of the discrete cable 22 is placed in the groove portion 38 a formed in the placement portion 38 of the body 30. Therefore, the height of the core wire 21a of the coaxial cable 21 and the terminal portion 51 and the height of the core wire 22a of the discrete cable 22 and the terminal portion 51 can be made substantially equal. As a result, when the respective core wires 21a and 22a are connected to the respective terminal portions 51, batch soldering by pulse heat can be performed, and the manufacture of the connector 10 is facilitated.

  In the present embodiment, the outer diameter of the shield layer 21c of the coaxial cable 21 and the outer diameter of the core wire 22a of the discrete cable 22 are set to be substantially the same diameter. Therefore, the shield layer 21c of the coaxial cable 21 and the core wire 22a of the discrete cable 22 can be easily connected to the ground simply by being sandwiched between the plate-like ground bars 61 and 62.

  Moreover, in this embodiment, the groove part 38a is formed between the adjacent terminal parts 51 in the mounting part 38 arranged in parallel so that the upper surface (surface) of the terminal part 51 may be exposed. The core wire 22a of the discrete cable 22 is connected to the two terminal portions 51 in a state where the core wire 22a of the discrete cable 22 is placed in the groove portion 38a. Therefore, since the distance between the core wire 22a and the adjacent terminal portion 51 is shortened and the solder 70 on the body 30 can be prevented from being repelled, the core wire 22a and the terminal portion 51 cause poor conduction. Can be suppressed.

  In the present embodiment, since the side surface portion 51a of the adjacent terminal portion 51 is exposed in the groove portion 38a, the molten solder can be caused to flow into the groove portion 38a when soldering. As a result, the soldering between the core wire 22a and the terminal portion 51 can be performed more reliably, and the occurrence of poor conduction between the core wire 22a and the terminal portion 51 can be further suppressed.

  In addition, by using the discrete cable 22 as the ground cable, the process for exposing the core wire 22a can be reduced as compared with the case where the coaxial cable is used, and the manufacturing process can be simplified.

  In the present embodiment, the groove portions 38a are formed at both ends of all the terminal portions 51 so that the core wire 22a of the discrete cable 22 can be placed in any one of the groove portions 38a. Therefore, it is not necessary to replace the body 30 when the location of the discrete cable 22 is changed. That is, since the location where the discrete cable 22 is arranged can be arbitrarily set by one body 30 according to the application, the body 30 can be provided with versatility.

(Second Embodiment)
The connector 10A according to the present embodiment basically has the same configuration as that of the first embodiment.

  That is, the connector 10 </ b> A includes a plurality of cables 20 and a synthetic resin body 30 in which a plurality of terminal portions 51 to which the core wire 20 a of one of the plurality of cables 20 is connected are arranged in parallel. ing. The body 30 is attached with a metal shell 40 for shielding electromagnetic noise.

  And the groove | channel part is provided in the site | part which mounts the core wire 22a of the discrete cable 22 of the mounting part 38 so that the height from the surface of the terminal part 51 of the core wire 21a and the core wire 22a can be arrange | equalized. It has become.

  Here, the main difference between the connector 10A of the present embodiment and the connector 10 of the first embodiment is that a groove 51b is provided in the terminal 51 on which the core wire 22a of the discrete cable 22 is placed.

  In the present embodiment, the groove portions 51b are opposed to each other, and a pair of side surface portions (inclined surfaces) 51c that become narrower in the depth direction from the opening side of the groove portions 51b, and the side surface portions (inclined surfaces) 51c A bottom surface portion 51d for connecting the lower portions to each other. That is, the groove 51b is formed in an inverted trapezoidal shape when viewed from the front. Then, as shown in FIG. 5, by placing the core wire 22a of the discrete cable 22 on the bottom surface portion 51d lower than the surface of the terminal portion 51, the height of the core wire 21a and the core wire 22a from the surface of the terminal portion 51 is increased. Aligned.

  Also according to the present embodiment described above, substantially the same operations and effects as the first embodiment can be achieved.

  Moreover, according to this embodiment, the groove part 51b is provided in the terminal part 51 which is a site | part by which the core wire 22a of the discrete cable 22 of the mounting part 38 is mounted. Therefore, the core wire 22a is positioned by the groove 51b, so that it is not necessary to align the core wire 22a during soldering, and the core wire 22a can be easily soldered to the terminal portion 51. As a result, it is possible to suppress the conduction failure between the core wire 22a and the terminal portion 51.

  Moreover, in this embodiment, the side part 51c which the groove part 51b mutually opposes is inclined so that it may become narrow as it goes to the depth direction from the opening side of the groove part 51b. As a result, the core wire 22a can be easily introduced into the groove 51b, and workability can be improved.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various modifications can be made.

  For example, in the first embodiment, the substantially V-shaped groove is illustrated, but the inverted trapezoidal groove shown in the second embodiment may be used. Moreover, you may make the shape of the groove part shown in the said 2nd Embodiment into substantially V shape.

  Further, the specifications (shape, size, layout, etc.) of the groove portion, the terminal portion, and other details can be changed as appropriate.

DESCRIPTION OF SYMBOLS 10 Connector 20 Cable 20a Core wire 21 Coaxial cable 21a Core wire 21c Shield wire 22 Discrete wire 22a Core wire 30 Body 38 Mounting part 38a Groove part 40 Shell 50 Contact 51 Terminal part for cables 51b Groove part 51c Inclined surface 61 Ground bar 62 Ground bar

Claims (6)

A connector comprising a plurality of cables and a body in which a plurality of terminal portions to which a core wire of one of the plurality of cables is connected are provided,
The plurality of cables include a core wire, an inner insulating coating layer that covers the core wire, a shield layer that covers the outer periphery of the inner insulating coating layer, and an outer insulating coating layer that covers the outer periphery of the shield layer. A coaxial cable used as a cable, a core wire larger in diameter than the core wire of the coaxial cable, and an insulating coating layer covering the outer periphery of the core wire, and a discrete cable used as a ground cable,
The body is provided with the terminal portion, and includes a placement portion for placing the core wires of the plurality of cables.
The connector according to claim 1, wherein the placement portion is provided with a groove portion in a portion where the core wire of the discrete cable is placed.   The connector according to claim 1, wherein the diameter of the shield layer of the coaxial cable and the diameter of the core wire of the discrete cable are substantially the same.   The groove portion is formed between adjacent terminal portions of the placement portion, and the core wire of the discrete cable is connected to the adjacent terminal portion in a state of being placed in the groove portion. The connector according to claim 1, wherein the connector is characterized by the following.   The connector according to claim 3, wherein a side surface portion of the adjacent terminal portion is exposed in the groove portion.   The connector according to claim 1, wherein the groove portion is formed in the terminal portion.   The said groove part has a pair of inclined surface which becomes narrow as it goes to the depth direction from the opening side of the said groove part while facing each other, The any one of Claims 1-5 characterized by the above-mentioned. connector.

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