JP2007258158A - Cable soldering type connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cable soldering type connector capable of easily tentatively holding a covering part of a cable as it is, of surely and evenly soldering a core wire to a tail part of a contact, and of preventing the contact point part of the contact from being contaminated by solder in the soldering. <P>SOLUTION: A tail base part 3 is projected from a rear surface of a connector body 1; a tail part 5b of each contact 5 is projected along the upper surface of the tail base part from the rear surface of the connector body and supported by it; a soldering hole 9 is formed in the tail part of each contact on the tail base part; and a U-shaped catching part 8 for catching the covering part of the cable is formed at the rear end of each tail part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cable solder type connector that temporarily holds a covering portion of a cable and solders a core wire to a contact.

  In Patent Document 1 (Japanese Utility Model Laid-Open No. 5-6708), a U contact portion and a soldering hole are formed on a pressure contact terminal block implanted in a printed circuit board, and electrical components are placed on the pressure contact terminal block. In the case of normal use to connect, press the lead terminal of the electrical component into the U contact part, and in the case of adverse conditions where vibration or impact acts, insert the lead terminal into the soldering hole. A soldering terminal block for soldering is disclosed.

  In this method, the U contact portion of the terminal block for pressure contact and the drilling portion for soldering are selectively used depending on conditions, and they are not used at the same time.

  Japanese Patent Application Laid-Open No. 2001-35554 discloses a cable connecting device in which a connector is divided into a base portion and a temporary fixing member. The temporary fixing member has a lid that can be opened and closed by a hinge with respect to the main body, and a plurality of plate-like contacts are held side by side at the base, and each contact is a bifurcated first that rises vertically at its rear end. It has a conduction contact portion and a second conduction contact portion extending substantially in parallel. When the lid of the temporary fixing member is closed and a plurality of cables are temporarily fixed to the temporary fixing member, and the temporary fixing member and the base are combined, the bifurcated first conductive contact portion cuts into the cable sheath. The core wire is electrically connected to the contact.

  However, this is a very complex structure. Also, the cable core wire is not soldered to the contact.

  In Patent Document 3 (Japanese Patent Application Laid-Open No. 8-115756), a conductor (core wire) that is exposed by being cut into a coating of an electric wire by pushing the coated electric wire into a press-contacting blade formed in an inverted Y shape is referred to as a press-contacting blade. An electric wire connection structure is disclosed in which a contact protrusion provided on the base of the press contact blade and an exposed conductor are brought into contact with each other, and the contact protrusion and the conductor are soldered.

However, the press contact blade does not temporarily hold the covered electric wire, but is cut into the covering and peeled off, so that there is a risk of damaging the conductor (core wire) and the peeling is not performed reliably. There is a drawback that the soldering between the contact protrusion provided on the base of the press contact blade and the conductor is poor.
Japanese Utility Model Publication No. 5-6708 JP 2001-35554 A JP-A-8-115756

  The problem of the present invention is that the covering portion of the cable can be easily temporarily held as it is, and the core wire and the tail portion of the contact can be soldered reliably and on average, and the contact portion of the contact is used for the soldering. It is an object of the present invention to provide a cable solder type connector that is not violated by solder.

  The present invention relates to a cable soldering type connector in which a plurality of contacts are embedded in a connector body and soldered to a tail portion of each contact, and a tail base portion projects from the rear surface of the connector body. The tail portion of the connector protrudes from the rear surface of the connector body along the upper surface of the tail base portion, and is supported by the tail portion. A soldering hole is formed in the tail portion of each contact on the tail base portion. A U-shaped sandwiching portion for sandwiching the cable covering portion is formed at the rear end of the portion.

The preferred form is as follows.
<Invention according to Claim 2>
A recess is formed on the front surface of the connector body to accommodate the front side portion of the contact, and a tail base portion projects from the rear surface of the connector body on the opposite side of the recess portion, and the rear surface of the connector body and the upper surface of the tail base portion are A step is formed.

<Invention according to claim 3>
The U-shaped sandwiching portion is formed by forming a U-shaped slit at the tip portion of the tail portion of the contact and bending this portion at a substantially right angle.

<Invention according to claim 4>
The U-shaped sandwiching portion is formed by forming a U-shaped slit at the distal end portion of the tail portion of the contact and bending this portion into an inverted V shape.

<Invention according to claim 5>
The U-shaped sandwiching portion is formed by forming a U-shaped slit at the distal end portion of the tail portion of the contact, and extending this portion along the upper surface of the tail base portion to a position exceeding the tail base portion.

<Invention according to claim 6>
The U-shaped clamping part is formed by making the tip part of the tail part of the contact into a U-shaped cross section, and the covering parts of the cable can be clamped by bending the rising parts on both sides facing each other inward. ing.

The present invention has the following effects.
(1) Since the tail portion of the contact protrudes along and is supported by the upper surface of the tail base portion protruding from the rear surface of the connector body, the contact tail portion is stabilized and the upper surface of the tail base portion is Since it becomes the bottom surface of the soldering hole provided in the part, the soldering of the cable core wire in this soldering hole can be performed reliably and on average.
(2) Since the U-shaped holding portion for holding the cable covering portion is provided at the rear end of the tail portion, temporary holding of the cable to the U-shaped holding portion can be easily performed.

The invention according to claim 2 has the following effects in addition to the effects (1) and (2).
(3) Since the front part of the contact is accommodated in the recess on the front surface of the connector main body, and the rear surface of the connector main body and the upper surface of the tail base part form a stepped portion, the front side part of the contact serving as the contact part is In addition to being violated by the solder, the soldering to the soldering hole and the temporary holding of the cable to the U-shaped clamping part can be performed orderly within the height of the stepped part.

  According to the third, fourth, and fifth aspects of the invention, the U-shaped sandwiching portion that sandwiches the covering portion of the cable can be easily formed.

  According to the invention of claim 6, since the U-shaped sandwiching portion has a U-shaped section and the rising portions on opposite sides of the U-shaped sandwiching portion are folded inward from each other, the covering portion of the cable is sandwiched. be able to.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a connector according to a first embodiment of the present invention. A connector main body 1 is molded of an insulating material such as a resin, and a long groove-like concave portion 2 is formed on the front surface, and a concave portion is formed on the rear surface 1a. A plate-like tail platform 3 is integrally projected from the widthwise intermediate portion on the opposite side of 2, and a step 4 is formed by the rear surface 1a of the connector body 1 and the upper surface 3a of the tail platform 3. ing.

  In the connector body 1, a plurality of contacts 5, which are metal plate pieces, are embedded only at an intermediate portion at a predetermined interval in the length direction of the recess 2, and the front portion 5 a of each contact 5 is accommodated in the recess 2. However, the tail portion 5 b of each contact 5 protrudes (exposes) along the upper surface 3 a of the tail base portion 3 from the rear surface 1 a of the connector main body 1 and is supported by this.

  The front end portion of the contact 5 is a contact portion 6 bent into a V shape. On the other hand, a U-shaped slit 7 is formed at the front end portion of the tail portion 5b, and the U-shaped sandwiching portion is formed at the rear end of the tail portion 5b by bending this portion upward at a substantially right angle (including an accurate right angle). 8 is formed.

  The U-shaped sandwiching portion 8 rises at a substantially right angle at the rear end of the upper surface 3 a of the tail base portion 3, and its height is equal to or less than the height of the step portion 4. Upper end edges 8 a and 8 b of the U-shaped holding portion 8 divided on both sides of the U-shaped slit 7 are inclined downward toward the U-shaped slit 7.

  The tail portion 5b is formed with a circular soldering hole 9 at a portion between the rear U-shaped clamping portion 8 at the rear end and the rear surface 1a of the connector body 1, and the upper surface 3a of the tail base portion 3 is formed of this solder. It is the bottom surface of the attachment hole 9.

  In order to connect the cable to each contact 5 of the connector of the first embodiment configured as described above, first, the covering portion 10a of the cable 10 is inserted into the U-shaped slit 7 of the U-shaped holding portion 8 as shown in FIG. . At that time, since the upper end edges 8a and 8b of the U-shaped sandwiching portion 8 are inclined downward toward the U-shaped slit 7, they can be easily inserted. When inserted in this way, the covering portion 10a of the cable 10 is sandwiched by the U-shaped sandwiching portion 8 and temporarily held therein.

  As shown in the figure, the tips of a plurality of core wires 10b of the cable 10 are positioned in the soldering hole 9, and soldering 11 is performed by pouring solder into the soldering hole 9, as shown in FIG. . Since the soldering is performed at the step portion 4 formed on the opposite side of the concave portion 2, the contact portion 6 at the front end of the contact 5 is not violated by the solder. Moreover, since the upper surface 3a of the tail base part 3 supports the tail part 5b from below and serves as the bottom surface of the soldering hole 9, soldering can be performed reliably and on average.

  In the connector after soldering to each contact 5 in this way, the temporary holding of the cable 10 and the soldering 11 are performed orderly within the height of the stepped portion 4 formed on the opposite side of the recess 2 without any unevenness. Will be.

  In the second embodiment, only the U-shaped sandwiching portion at the rear end of each contact is different from the first embodiment, and as shown in FIG. A shape slit 7 is formed, and this portion is formed in an inverted V shape with the portion facing upward. In this way, the U-shaped sandwiching portion 8 bent in an inverted V shape has a half portion 8c extending upwardly from the horizontal tail portion 5b and the other half portion 8d extending further inclined downward. Therefore, the temporary holding of the covering portion 10a of the cable 10 is facilitated as shown in FIG.

  The third embodiment also differs from the first embodiment only in the U-shaped clamping portion at the rear end of each contact. In other words, in the first embodiment, the distal end portion of the tail portion 5b having the U-shaped slit 7 is bent upward at a substantially right angle, and the U-shaped sandwiching portion 8 rises at a substantially right angle at the rear end of the upper surface 3a of the tail base portion 3. However, in the third embodiment, as shown in FIG. 6, the tip portion of the tail portion 5b having the U-shaped slit 7 is directly extended from the rear end of the upper surface 3a of the tail base portion 3 without being bent. As a result, the U-shaped sandwiching portion 8 that extends straight beyond the rear end of the upper surface 3a of the tail base portion 3 can be formed more easily than the first and second embodiments. is there.

  In order to connect the cable to each contact 5 of the connector of the third embodiment, as shown in FIG. By inserting into the slit 7, the covering portion 10 a of the cable 10 is sandwiched by the U-shaped sandwiching portion 8 and temporarily held therein. In this state, the cable 10 is bent and the tips of the plurality of core wires 10b are positioned in the soldering holes 9, and soldering 11 is performed so that solder flows into the soldering holes 9.

  In the fourth embodiment, as shown in FIG. 8, U-shaped sandwiching having a U-shaped cross section is formed by integrally forming opposing rising portions 8e and 8f on both edges of the tip portion of the tail portion 5b of each contact 5. The portion 8 is formed, and the others are the same as those in the first embodiment.

  To connect the cable to each contact 5 of the connector of Example 4, as shown in FIG. 9, the cable 10 is placed on the tail portion 5b between the rising portions 8e and 8f on both sides of the U-shaped sandwiching portion 8, The rising portions 8e and 8f on both sides are bent inside each other, and the covering portion 10a of the cable 10 is clamped by these as shown in FIG. 10, whereby the covering portion 10a of the cable 10 is temporarily held in the U-shaped holding portion 8. . Then, the tips of the plurality of core wires 10 b of the cable 10 are positioned in the soldering hole 9, and soldering 11 is performed so that solder flows into the soldering hole 9.

  In the case of the fourth embodiment, the distance between the rising portions 8e and 8f on both sides of the U-shaped sandwiching portion 8 is set to a size having a margin with respect to the outer diameter of the covering portion 10a of the cable 10. Can handle differences in thickness.

It is the perspective view which made a part of Example 1 of the present invention a section. In Example 1, it is a perspective view of the state which temporarily hold | maintained the cable in the U-shaped clamping part of a contact. Similarly, it is the perspective view of the state which soldered the core wire of the cable in the soldering hole of the contact. It is a perspective view which shows only the tail part of a contact about Example 2 of this invention. Similarly, it is a perspective view of the state which solders the core wire of a cable in the soldering hole of a contact. It is the perspective view which made a part of Example 3 of this invention the cross section. In Example 3, it is a perspective view of the state which soldered the core wire of the cable in the soldering hole of the contact. It is the perspective view which made a part of Example 4 of the present invention a section. In Example 4, it is a perspective view of the state which temporarily hold | maintains a cable to the U-shaped clamping part of a contact. In Example 4, it is a perspective view of the state which soldered the core wire of the cable in the soldering hole of the contact.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connector main body 1a Rear surface of connector main body 2 Recessed portion of connector main body 3 Tail base portion 3a of connector main body 4 Top surface of tail base portion 4 Step portion of connector main body 5 Contact 5a Front side portion of contact 5b Contact tail portion 6 Contact contact portion 7 U-shaped slit 8 U-shaped sandwiching portions 8a and 8b Upper edge 8c and 8d of U-shaped sandwiching portion Half portions 8d and 8f of U-shaped sandwiching portion 9 Rising portion of U-shaped sandwiching portion 9 Soldering hole 10 Cable 10a Cable covering portion 10b Core wire 11 Soldering

Claims (6)

  In a cable soldering type connector in which a plurality of contacts are embedded in the connector body and soldered to the tail part of each contact, a tail base part projects from the rear surface of the connector body, and the tail part of each contact Projecting from the rear surface of the connector body along the upper surface of the tail base, and supported by the tail base, solder holes are formed on the tail base of each contact, and A cable solder type connector, characterized in that a U-shaped holding part for holding the covering portion of the cable is formed at an end.   A recess is formed on the front surface of the connector body to accommodate the front portion of the contact. 2. The cable solder type connector according to claim 1, wherein a step portion is formed.   The U-shaped clamping part is formed by forming a U-shaped slit at the tip of the tail part of the contact and bending this part at a substantially right angle, and the U-shaped clamping part rises on the tail base part. 3. The cable solder type connector according to claim 1, wherein the cable solder type connector is provided.   The cable according to claim 1 or 2, wherein the U-shaped sandwiching portion is formed by forming a U-shaped slit at a tip portion of a tail portion of the contact and bending the portion into an inverted V shape. Solder type connector.   The U-shaped sandwiching part is formed by forming a U-shaped slit at the tip of the tail part of the contact and extending this part along the upper surface of the tail base part beyond the tail base part. 3. The cable solder type connector according to claim 1, wherein the cable solder type connector is provided.   The U-shaped clamping part is formed by making the tip part of the tail part of the contact into a U-shaped cross section, and the covering parts of the cable can be clamped by bending the rising parts on both sides facing each other inward. The cable solder type connector according to claim 1, wherein the cable solder type connector is provided.

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