JP4600839B2 - Connector and connector and cable connection method - Google Patents

Description

  The present invention relates to a connector, and more particularly to a connector for an interface cable.

  FIG. 1 shows an example of a conventional connector. A plurality of contacts 11 are embedded in an insulating housing mold 10. The housing mold 10 includes a rear surface 10c. Each contact 11 includes a contact portion 11a and a tail portion 11b. The contact portion 11a is connected to the contact portion of the connection destination connector. The tail portion 11b protrudes from the rear surface 10c. A core wire 13a of a single wire 13 is soldered to each tail portion 11b with solder 12.

  FIG. 2 is a cross-sectional view of the tail portion 11b and the core wire 13a in a cross section parallel to the rear surface 10c. Each tail portion 11b has a flat plate shape with a width L11. The contacts 11 are arranged at a pitch P1. A symbol U1 indicates an interval between adjacent tail portions 11b. Reference numeral T1 indicates a creepage distance along the rear surface 10c between the adjacent tail portions 11b. Since the contact 11 has a flat plate shape, it is difficult to position the core wire 13a at a desired position of the tail portion 11b during soldering. Therefore, the soldering work efficiency is poor. Furthermore, since heat cannot be quickly transferred to the core wire 13a and the tail portion 11b, the insulation coating covering the outside of the core wire 13a or the housing mold 10 may be thermally deformed. Further, if the pitch P1 is reduced in order to increase the density of the contacts 11 while ensuring the width L11 necessary for soldering, the interval U1 and the creeping distance T1 are reduced. In this case, a solder bridge is likely to be formed between adjacent tail portions 11b, and insulation failure between adjacent tail portions 11b is likely to occur.

  Patent Document 1 discloses a connector incorporated as an interface in a portable information terminal (PDA) or the like. The connector includes a plurality of contacts arranged in parallel in the pitch direction and an insulator for holding and fixing the contacts. The contact includes a contact portion connected to the mating connector, a holding portion held by the insulator, and a terminal portion connected to the cable. The terminal portion includes a connection portion to which the cable is soldered and is formed to protrude from the insulator in the axial direction of the contact. In this connector, the connection portion is inclined by approximately 45 ° with respect to the pitch direction so that the distance between the contacts can be minimized.

  Patent Document 2 discloses a coaxial cable connector. In a coaxial cable connector, a signal contact that is press-contacted with a central conductor of the coaxial cable and a ground contact that is press-connected via a braided outer conductor of the coaxial cable via a relay contact are held in a housing. The relay contact has two surfaces whose cross section viewed in the axial direction of the coaxial cable is substantially L-shaped. Since the relay contact is soldered to the braided outer conductor on two surfaces bent in a substantially L shape, it can be used for coaxial cables of various diameters.

JP 2004-158288 A JP 2006-310099 A

  An object of the present invention is to provide a connector having excellent workability in soldering a contact and a cable, and a method for connecting the connector.

  Hereinafter, means for solving the problem will be described using the numbers used in (Best Mode for Carrying Out the Invention). These numbers are added to clarify the correspondence between the description of (Claims) and (Best Mode for Carrying Out the Invention). However, these numbers should not be used to interpret the technical scope of the invention described in (Claims).

  The connector (1) according to the present invention comprises a housing mold (4) and a plurality of contacts (5) embedded in the housing mold. Each of the plurality of contacts includes a contact portion (5a) and a tail portion (5b) protruding in the first direction (X direction) from the housing mold. The tail portion includes a first plate-like portion (51), a second plate-like portion (52), and a coupling portion (53) extending in the first direction. The coupling portion couples the first plate-like portion and the second plate-like portion in an L shape.

  According to the present invention, when the core wire is soldered to the tail portion, the core wire is positioned at the corner (53a) formed by the first plate-like portion and the second plate-like portion, thereby facilitating the soldering operation. Become.

  The plurality of contacts are preferably arranged along a first straight line (S1) perpendicular to the first direction. The first plate-shaped portion preferably includes a first edge portion (51a) parallel to the coupling portion. It is preferable that the second plate-like portion includes a second edge portion (52a) parallel to the coupling portion. An interval (L51) between the connecting portion and the first edge portion is larger than an interval (L52) between the connecting portion and the second edge portion, and the first plate-like portion is inclined with respect to the first straight line. It is preferable.

  According to the present invention, the contact pitch (P2) is ensured while ensuring the width (L51) of the first plate-like portion necessary for soldering and the creepage distance (T2) necessary for insulation between adjacent tail portions. Can be reduced.

  The connector and cable connection method according to the present invention is used for connection between the connector (1) and the cable (2). The connector includes a housing mold (4) and a plurality of contacts (5) embedded in the housing mold. Each of the plurality of contacts includes a contact portion (5a) and a tail portion (5b) protruding in the first direction (X direction) from the housing mold. The tail portion includes a first plate-like portion (51), a second plate-like portion (52), and a coupling portion (53) extending in the first direction. The coupling portion couples the first plate-like portion and the second plate-like portion in an L shape. The first plate-like portion includes a first surface (51b) facing a space sandwiched between the first plate-like portion and the second plate-like portion. The second plate-like portion includes a second surface (52b) facing the space. The method of connecting the connector and the cable includes a step of supporting the connector so that the first surface faces obliquely upward, and a core wire (3a) of the cable as an intersection line between the first surface and the second surface (53a). A step of heating the core wire and the tail portion using a soldering iron (9) having a tapered portion (9a), and a step of soldering the core wire and the tail portion. It comprises. In the heating step, the tip of the tapered portion is pressed against the core wire while keeping the conical surface of the tapered portion along the first surface.

  According to the present invention, it is easy to heat the core wire and the tail portion.

  The housing mold preferably has a bottom surface (4b). When the bottom surface is directed vertically downward, the first surface is preferably directed obliquely upward. An angle (θ) formed between the conical surface and the axis (S3) of the tapered portion is preferably equal to an angle (β) formed between the first surface and a perpendicular (S2) of the bottom surface. In the supporting step, it is preferable that the connector is placed on a horizontal surface with the bottom face down.

  According to the present invention, it is easy to closely contact the conical surface of the tapered portion and the first surface.

  ADVANTAGE OF THE INVENTION According to this invention, the connector and the wiring method of a connector with which the workability | operativity of the soldering of a contact and a cable was excellent are provided.

  The best mode for carrying out a connector and a method for connecting a connector and a cable according to the present invention will be described below with reference to the accompanying drawings.

  FIG. 3 shows a connector 1 according to an embodiment of the present invention. An I / O cable 2 is connected to the connector 1. The connector 1 and the I / O cable 2 constitute an interface cable. The I / O cable 2 includes a plurality of single wires 3. Each single wire 3 includes a core wire 3a.

  FIG. 4 shows a housing mold 4 and a plurality of contacts 5 included in the connector 1. In the figure, X, Y, and Z directions perpendicular to each other are shown. The housing mold 4 is an insulator. The housing mold 4 includes an upper surface 4a facing the Z direction positive side, a bottom surface 4b facing the Z direction negative side, and a rear surface 4c facing the X direction negative side. The plurality of contacts 5 are embedded in the housing mold 4. Each contact 5 includes a contact portion 5a and a tail portion 5b. Each tail portion 5b protrudes from the rear surface 4c to the X direction negative side. A core wire 3 a is soldered to each tail portion 5 b by solder 7. When the connector 1 is connected to the connection destination connector in the X direction, each contact portion 5a contacts the contact portion of the connection destination connector.

  FIG. 5 is a cross-sectional view of the tail portion 5b and the core wire 3a in a cross section parallel to the rear surface 4c (cross section perpendicular to the X direction). The cross section of each tail portion 5b is L-shaped. The plurality of tail portions 5b are arranged at a pitch P2 along a straight line S1 parallel to the Y direction. Each tail portion 5b has a flat plate-like first plate-like portion 51, a flat plate-like second plate-like portion 52, and a combination of the first plate-like portion 51 and the second plate-like portion 52 coupled along the X direction. Part 53. The coupling portion 53 extends in the X direction. The first plate-like portion 51 includes a first edge portion 51 a on the opposite side of the coupling portion 53. The second plate-like portion 52 includes a second edge portion 52 a on the opposite side of the coupling portion 53. The first edge portion 51 a and the second edge portion 52 a are parallel to the coupling portion 53. The first plate-like portion 51 includes a first surface 51b. The second plate-like portion 52 includes a second surface 52b. The first surface 51 b and the second surface 52 b are parallel to the X direction and face a space sandwiched between the first plate-like portion 51 and the second plate-like portion 52. An intersection line 53a between the first surface 51b and the second surface 52b is a corner formed by the first plate-like portion 51 and the second plate-like portion 52, and extends in the X direction. Reference symbol α indicates an opening angle between the first plate-like portion 51 and the second plate-like portion 52. Symbol β indicates an angle formed by the straight line S2 perpendicular to the bottom surface 4b and the first surface 51b. Symbol γ represents an angle formed by the first plate-like portion 51 and the straight line S1. Symbol δ indicates an angle formed between the second plate-like portion 52 and the straight line S1. Symbol L51 indicates the width of the first plate-like portion 51 (the interval between the first edge portion 51a and the coupling portion 53). Symbol L52 indicates the width of the second plate-like portion 52 (the interval between the second edge portion 52a and the coupling portion 53). Reference symbol U2 indicates an interval between adjacent tail portions 5b. Reference numeral T2 indicates a creepage distance along the rear surface 4c between the adjacent tail portions 5b. The core wire 3a is arrange | positioned along the intersection line 53a, and is soldered to the 1st surface 51b and the 2nd surface 52b.

  The first plate-like portion 51 and the second plate-like portion 52 are coupled in an L shape with an opening angle α larger than 0 ° and smaller than 180 °. Therefore, it is easy to position the core wire 3a with respect to the tail portion 5b by bringing the core wire 3a along the intersecting line 53a during soldering. Further, the angles γ and δ are preferably larger than 0 ° and smaller than 90 °. When the connector 1 (housing mold) is placed on a horizontal surface so that the bottom surface 4b is on the bottom, the first surface 51b and the second surface 52b face obliquely upward, so that the melted solder is in the first plate-shaped portion 51 and the first surface. The flow from the space between the two plate-like portions 52 is prevented. When the width L51 is larger than the width L52, it is preferable that the first plate-like portion 51 is inclined with respect to the straight line S1. In this case, it is possible to reduce the pitch P2 while ensuring the width L51 necessary for soldering and the space U2 and creepage distance T2 necessary for insulation. For example, it is possible to make the pitch P2 smaller than the pitch P1, while making the value of the width 51 equal to the value of the width L11 and the values of the distance U2 and the creepage distance T2 equal to the values of the distance U1 and the creepage distance T1. .

  Next, the process of soldering the core wire 3a to the tail part 5b will be described with reference to FIGS. 6 (a) to 6 (c).

  The housing mold 4 (connector 1) is supported with the bottom surface 4b in close contact with the horizontal plane. The coating of the single wire 3 is stripped to the specified dimensions, and the core wire 3a is stripped. Next, as shown to Fig.6 (a), the core wire 3a is arrange | positioned along the intersection line 53a.

  Next, the tip of the taper portion 9a is pressed against the core wire 3a while the surface (conical surface) of the taper portion 9a of the soldering iron 9 is along the first surface 51b, and the core wire 3a and the tail portion 5b are heated. Here, if the first surface 51b faces obliquely upward, the heating operation is easy. Reference sign θ represents an angle formed by the surface (conical surface) of the tapered portion 9a and the axis S3 of the tapered portion 9a. Here, it is preferable that the angle θ and the angle β are equal. It is easy to bring the surface (conical surface) of the tapered portion 9a into close contact with the first surface 51b, and the tail portion 5b can be heated quickly.

  Next, as shown in FIG. 6C, the solder 7 is formed by melting and solidifying the solder material.

FIG. 1 is a perspective view showing the structure of a conventional connector. 2 is a cross-sectional view of the tail portion of the connector of FIG. FIG. 3 is an external view of the connector according to the embodiment of the present invention. FIG. 4 is a perspective view showing the structure of the connector according to the embodiment of the present invention. FIG. 5 is a cross-sectional view of the tail portion of the connector of FIG. 6A to 6C are cross-sectional views illustrating steps of connecting the connector and the cable according to the embodiment of the present invention in the order of steps.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Connector 2 ... I / O cable 3 ... Single wire 3a ... Core wire 4 ... Housing mold 4a ... Upper surface 4b ... Bottom surface 4c ... Rear surface 5 ... Contact 5a ... Contact part 5b ... Tail part (connection part)
51 ... 1st plate-like part 51a ... 1st edge part 51b ... 1st surface 52 ... 2nd plate-like part 52a ... 2nd edge part 52b ... 2nd surface 53 ... Connection part 53a ... Intersection 7 ... Solder 9 Soldering iron 9a Tapered portion 10 Housing mold 10c Rear surface 11 Contact 11a Contact point 11b Tail portion 12 Solder 13 Single wire 13a Core S1 Straight S2 Straight S3 Axis

Claims (2)

A connection method for connecting a connector and a cable,
The connector is
A housing mold;
A plurality of contacts embedded in the housing mold,
Each of the plurality of contacts is
A contact portion;
A tail portion protruding in the first direction from the housing mold,
The tail portion includes a first plate-shaped portion, a second plate-shaped portion, and a coupling portion extending in the first direction,
The coupling portion couples the first plate-like portion and the second plate-like portion into an L shape ,
The first plate-like portion includes a first surface facing a space sandwiched between the first plate-like portion and the second plate-like portion,
The second plate-shaped portion includes a second surface facing the space,
Supporting the connector so that the first surface faces obliquely upward;
Arranging the core wire of the cable along an intersection line of the first surface and the second surface;
Heating the core and the tail using a soldering iron with a taper; and
Soldering the core wire and the tail portion;
Comprising
In the heating step, the tip of the tapered portion is pressed against the core wire while keeping the conical surface of the tapered portion along the first surface,
The housing mold includes a bottom surface,
When the bottom surface is directed vertically downward, the first surface is directed obliquely upward,
The angle formed between the conical surface and the axis of the tapered portion is equal to the angle formed between the first surface and the perpendicular of the bottom surface,
In the supporting step, a connector and cable connection method for placing the connector on a horizontal surface with the bottom face down . Before Symbol first plate portion comprises a first edge portion parallel to the coupling portion,
The second plate-shaped portion includes a second edge portion parallel to the coupling portion,
Distance between the first edge portion and the coupling portion is not greater than a distance between the coupling portion and the second edge portion
請 Motomeko 1 of the connector and the connection method of the cable.

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