JP6614222B2 - Electrical connector - Google Patents

Description

  The present invention relates to an electrical connector connected to an electric wire such as an enameled wire.

  2. Description of the Related Art Conventionally, a wire connection structure in which an electric wire is soldered and connected to an electric terminal is known. In such an electric wire connection structure, the boundary between the electric wire embedded in the solder and the electric wire located outside the solder becomes hard and brittle. Therefore, if bending or tensile force is applied to this portion, the electric wire is easily cut.

  On the other hand, Patent Document 1 discloses a wire connection structure in which an electric wire is wound around and connected to an electric terminal. Specifically, in the wire connection structure of Patent Document 1, an electric wire as a covered wire is wound once around an upright portion of an electric terminal that is erected vertically, and the end portion of the bare wire is cut out from the covered portion of the electric wire. Solder to the plane of the plate. Thereby, a bending force or a tensile force is not directly applied to the soldering portion, and it is possible to prevent the soldered electric wire from being broken.

Japanese Utility Model Publication No. 57-17081

  However, in patent document 1, since the angle | corner of the standing part around which an electric wire is wound is angular, when the electric wire wound around the electric terminal is pulled strongly, the electric wire is damaged by the corner of the standing part and the electric wire is cut. Has the problem of fear. Further, in Patent Document 1, when the electric wire is wound around the standing portion and soldered, the end of the bare wire cannot be stably held in the soldering position because the electric wire tries to return to a straight shape. There is a problem that the working efficiency is lowered and the soldering position is varied.

  An object of the present invention is to provide an electrical connector that can be held stably when connecting an electric wire while there is no fear of damaging the electric wire when the wound electric wire is pulled.

  An electrical connector according to the present invention is an electrical connector that is connected to an electric wire, and includes an insulating housing and a terminal portion that is exposed from the housing and is connected to the electric wire, and has electrical conductivity held by the housing. The housing includes a winding portion on which the electric wire is wound and a surface in contact with the folded portion of the electric wire is a curved surface, and a lateral movement of the electric wire provided side by side on the left and right sides of the terminal portion. And a left and right restricting portion that restricts

  When connecting the electric wire wound around the winding part to the terminal part, the electric wire can be connected to the terminal part while restricting the left and right movement in the terminal part of the electric wire with the right and left restricting part, and connected to the terminal part. When the electric wire is pulled, the electric wire wound around the winding portion comes into pressure contact with the curved surface of the winding portion.

  According to the present invention, there is no fear of damaging the electric wire when the wound electric wire is pulled, and it can be stably held when the electric wire is connected.

It is the perspective view seen from the diagonal front above the electric connector which concerns on the 1st Embodiment of this invention. It is the perspective view seen from the diagonally forward lower part of the electrical connector which concerns on the 1st Embodiment of this invention. It is a bottom view of the electrical connector which concerns on the 1st Embodiment of this invention. It is a front view of the electrical connector which concerns on the 1st Embodiment of this invention. 1 is a perspective view of a housing according to a first embodiment of the present invention. It is a front view of the housing which concerns on the 1st Embodiment of this invention. 1 is a plan view of a housing according to a first embodiment of the present invention. It is the perspective view seen from diagonally forward above the electrical connector which concerns on the 2nd Embodiment of this invention. It is a top view of the electrical connector which concerns on the 2nd Embodiment of this invention. It is a bottom view of the electrical connector which concerns on the 2nd Embodiment of this invention. It is a side view of the electrical connector which concerns on the 2nd Embodiment of this invention. It is a top view of the electrical connector which concerns on the 3rd Embodiment of this invention. It is a rear view of the electrical connector which concerns on the 3rd Embodiment of this invention. It is a front view of the electrical connector which concerns on the 3rd Embodiment of this invention.

  Hereinafter, electrical connectors according to embodiments of the present invention will be described in detail with reference to the drawings as appropriate. In the figure, the x-axis, y-axis, and z-axis form a three-axis orthogonal coordinate system, where the positive y-axis direction is the forward direction, the negative y-axis direction is the backward direction, the x-axis direction is the left-right direction, and the z-axis direction is A description will be given assuming that the positive direction is upward and the negative direction of the z-axis is downward.

(First embodiment)
<Configuration of electrical connector>
The configuration of the electrical connector 1 according to the first embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 7. 1 to 4 show a state in which the electric wire S is connected to the electrical connector 1 according to the present embodiment.

  An electrical connector 1 according to this embodiment is connected to an electric wire S such as an enameled wire, and has a housing 2 and a contact 3.

  The housing 2 is formed of an insulating material, and includes a winding part 21, a left / right restricting part 22, a left / right restricting part 23, an upper restricting part 24, an upper face 25, a lower restricting part 26, and a lower face. 27 and a recess 28.

  The winding portion 21 is wound with the electric wire S. The surface of the winding portion 21 that contacts the folded portion S1 of the electric wire S is a curved surface, and the other surface is a flat surface that is flat along the yz plane. Since the upper restricting portion 24 is not provided on the surface of the winding portion 21 facing the left and right restricting portion 22, the surface is flat along the yz plane from the connecting portion with the upper surface 25 to the upper end. Yes.

  The left and right restricting portion 22 is erected between the winding portion 21 and the terminal portion 31 on the upper surface 25, and is provided side by side with the terminal portion 31 in the left and right direction, and from the front end of the upper surface 25 to the front end of the upper surface 25. It extends to the center with the rear end. The left and right restricting portion 22 is in contact with the end portion of the terminal portion 31 in the left and right direction. The left and right restricting portion 22 is provided with an inclined surface 221 that is inclined downward from the upper end toward the winding portion 21. The left and right restricting portions 22 are provided in the same number as the number of electric wires S connected to the electrical connector 1, and two in the present embodiment are provided.

  The left and right restricting portion 23 is erected on the upper surface 25 and is provided side by side with the terminal portion 31 in the left and right direction, and faces the left and right restricting portion 22 with the terminal portion 31 interposed therebetween. The left / right restricting portion 23 extends from the front end to the rear end of the upper surface 25. The left and right restricting portion 23 is in contact with the end portion of the terminal portion 31 in the left and right direction. The right and left restricting portion 23 is erected between the pair of terminal portions 31 when the two electric wires S are connected to the electrical connector 1 as in the present embodiment.

  The upper restricting portion 24 is formed in a hook shape at the upper end of the winding portion 21 so as to protrude from the winding portion 21 forward, outward in the left-right direction, and rearward.

  The upper surface 25 is a flat surface that is flat along the yz plane. Downward restricting portions 251 as central restricting portions are provided at both ends of the upper surface 25 in the left-right direction. As shown in FIGS. 6 and 7, the lower restricting portion 251 is provided at a position that does not overlap with the upper restricting portion 24 when viewed from above, and a predetermined interval R <b> 1 between the upper restricting portion 24 in the vertical direction. (See FIG. 6).

  As shown in FIGS. 6 and 7, the lower restricting portion 26 as the end restricting portion is provided at a position that does not overlap the upper restricting portion 24 when viewed from above, and at the front and rear of the lower restricting portion 251. It is connected continuously. As shown in FIG. 6, the lower restricting portion 26 is provided with an interval R <b> 2 (R <b> 2> R <b> 1) larger than the interval R <b> 1 in the vertical direction between the upper restricting portion 24. The lower restricting portion 26 is an inclined surface that is inclined downward in a direction away from the upper restricting portion 24 and is inclined downward at an angle corresponding to the outer diameter of the electric wire S and the number of windings of the electric wire S. When S is wound around the winding part 21 twice, the gap R2 is inclined downward at an angle such that the interval R2 is twice or more the outer diameter of the electric wire S. The lower restricting portion 26 is not limited to the inclined surface, and may be a concave portion provided with an interval R2 in the vertical direction between the upper restricting portion 24 and the like.

  The lower surface 27 has a complementary shape with the mating portion of the mating connector K, and mates with the mating portion of the mating connector K (see FIG. 4).

  As shown in FIGS. 5 and 6, the recess 28 is recessed in the upper surface 25. A terminal portion 31 is disposed in the recess 28.

  The contact 3 is formed of a conductive material and is held in the housing 2 by integral molding, and includes a terminal portion 31 and a connection portion 32.

  The terminal portion 31 is exposed between the left and right restricting portions 22 and the left and right restricting portions 23 on the upper surface 25 of the housing 2 and is connected to the electric wire S.

  The connection portion 32 protrudes downward from the lower surface 27 of the housing 2 and connects to the conductive portion of the mating connector K.

  In the electrical connector 1 having the above-described configuration, as shown in FIG. 4, the electrical connector 1 fitted to the counterpart connector K is pulled upward by hooking a finger on the upper restricting portion 24. The fitting state with K can be released. Thereby, the fitting state of the electrical connector 1 and the counterpart connector K can be easily released.

<Connection method between electrical connector and electric wire>
A method for connecting the electrical connector 1 and the electric wire S according to the first embodiment of the present invention will be described in detail below.

  First, the wire S in a state where the insulator on the distal end side is removed and the conductive portion is exposed is inserted between the winding portion 21 and the regulating portion 23, and then the winding portion 21 with respect to the winding portion 21. Wrap from inside to outside. At this time, the downward movement of the electric wire S is restricted by the lower restricting portion 26 and the lower restricting portion 251, and the movement of the electric wire S in the direction away from the winding portion 21 in the left and right direction is restricted by the left and right restricting portion 22. Thereby, the electric wire S can be easily wound around the winding part 21. In addition, the inclined surface 221 provided at the upper end of the left and right restricting portion 22 can guide the insertion of the electric wire S between the winding portion 21 and the left and right restricting portion 22, and the winding portion 21 and the left and right restricting portion 22. The electric wire S can be easily inserted between the two. Moreover, the electric wire S can be easily inserted between the winding part 21 and the left and right restricting part 22 by preventing the upper restricting part 24 from projecting inward in the left and right direction of the winding part 21. Further, by making the vertical interval R2 between the upper restricting portion 24 and the lower restricting portion 26 larger than the vertical interval R1 between the upper restricting portion 24 and the lower restricting portion 251, the electric wire S is attached to the winding portion 21. At the time of winding, the electric wire S can be hooked on the upper restricting portion 24 after being moved downward, so that the electric wire S can be easily hooked on the upper restricting portion 24.

  Next, the electric wire S is wound around the winding portion 21 from the outer side to the inner side so that the rear side wound around the winding portion 21 of the electric wire S is pressed from above. It is located between the restricting portion 22 and the left and right restricting portion 23 and located above the terminal portion 31. At this time, by restricting the upward movement of the electric wire S by the upper restricting portion 24, it is possible to prevent the electric wire S from coming out of the winding portion 21, and the electric wire S is attached to the winding portion 21. The wound state can be maintained.

  Next, the tip end side of the electric wire S is connected to the terminal portion 31. The electric wire S and the terminal part 31 are connected by soldering by pulse heat or the like, laser welding or resistance (thermal) welding. At this time, the movement of the electric wire S to be returned to the linear shape in the left-right direction is restricted by the left-right restriction part 22 and the left-right restriction part 23, so that the electric wire S can be stably held at the connection position with respect to the terminal part 31. Therefore, work efficiency can be improved and variation in the connection position of the electric wire S with respect to the terminal portion 31 can be suppressed. In addition, the movement of the portion wound around the winding portion 21 of the electric wire S in the direction of the terminal portion 31 is restricted by the left and right restricting portion 22 so that the portion wound around the winding portion 21 of the electric wire S is connected to the terminal portion 31. It is possible to prevent the electric wire S being pressed from being pressed, and to prevent the connection state between the electric wire S and the terminal portion 31 from becoming unstable.

  Next, the part which protruded ahead from the terminal part 31 of the front end side of the electric wire S is cut | disconnected along the front end surface of the terminal part 31 with the cutter which is not shown in figure, and the electric wire S is made into the state shown in FIG.

  When the electric wire S is pulled rearward in this state, the electric wire S is pressed against the winding portion 21, but the winding portion 21 that comes into contact with the folded portion S <b> 1 of the electric wire S has a curved surface. Since the load applied to the electric wire S from the portion 21 can be dispersed, the electric wire S can be prevented from being damaged by the winding portion 21 and the electric wire S can be prevented from being cut. Moreover, since the electric wire S is wound around the winding portion 21 so as to tighten the winding portion 21, it is possible to prevent a tensile force from being directly applied to a connection portion of the electric wire S with the terminal portion 31. Connection failure with 31 can be prevented.

  Here, the electric wire S can be wound around the winding portion 21 a desired number of times by providing the lower restricting portion 26 so as to have an interval R2 according to the outer diameter and the number of turns of the electric wire S.

  As described above, according to the present embodiment, the wire S is wound and the winding portion 21 having a curved surface in contact with the folded portion S1 of the wire S, the left and right regulating portions 22 provided on the left and right sides of the terminal portion 31, and When the electric wire S wound around the winding portion 21 is pulled, there is no fear of damaging the electric wire S by the winding portion 21, and when the electric wire S is connected to the terminal portion 31. By restricting the right and left movement of the electric wire S by the left and right restricting portion 22 and the left and right restricting portion 23, the electric wire S can be stably held.

  In the present embodiment, the upper restricting portion 24 protrudes forward, outward in the left-right direction and rearward at the upper end of the winding portion 21, but the upper restricting portion extends forward and backward at the upper end of the winding portion. While projecting, it can be provided so as not to project outward and inward in the left-right direction. In this case, the width of the housing 2 in the left-right direction can be reduced, and the electrical connector can be reduced in size.

(Second Embodiment)
<Configuration of electrical connector>
The configuration of the electrical connector 100 according to the second embodiment of the present invention will be described in detail below with reference to FIGS.

  8 to FIG. 11, parts having the same configurations as those in FIG. 1 to FIG. 8 to 11 show a state where the electric wire S is connected to the electrical connector 100 according to the present embodiment.

  The electrical connector 100 is connected to an electric wire S such as an enameled wire, and has a contact 3 and a housing 102.

  The housing 102 is made of an insulating material, and includes a winding part 21, a left / right restricting part 22, a left / right restricting part 23, an upper restricting part 24, an upper face 25, a lower restricting part 26, and a lower face. 27, a recess 28, a wire holding part 101, a winding part 121, an upper restricting part 124, and an upper restricting part 125.

  The left and right restricting portion 22 is erected between the winding portion 121 and the terminal portion 31 on the upper surface 25, and is provided side by side with the terminal portion 31 in the left and right direction, and from the front end of the upper surface 25 to the front end of the upper surface 25. It extends to the center with the rear end. The right and left restricting portion 22 is provided with an inclined surface 221 that is inclined downward from the upper end toward the winding portion 121. The left and right restricting portions 22 are provided in the same number as the number of electric wires S connected to the electrical connector 100, and two left and right restricting portions 22 are provided in the present embodiment.

  The right and left restricting portion 23 is erected between the pair of terminal portions 31 when the two electric wires S are connected to the electrical connector 100 as in the present embodiment.

  The electric wire holding portion 101 is recessed downward in the center of the winding portion 121 in the front-rear direction.

  The winding part 121 is wound with the electric wire S. The surface of the winding portion 121 that contacts the folded portion S1 of the electric wire S is a curved surface, and the other surface is a flat surface that is flat along the yz plane. Since the upper restricting portion 124 and the upper restricting portion 125 are not provided, the surface of the winding portion 121 that faces the left and right restricting portion 22 is flat along the yz plane from the connection portion with the upper surface 25 to the upper end. 1).

  The upper restricting portion 124 is formed in a hook shape so as to protrude forward and laterally outward from the winding portion 121 at the upper front end of the winding portion 121.

  The upper restricting portion 125 is formed in a hook shape so as to protrude rearward and laterally outward from the winding portion 121 at the upper rear end of the winding portion 121.

  The upper surface 25 is provided with a lower restricting portion 251 that restricts the downward movement of the electric wire S wound around the winding portion 121. The lower restricting portion 251 is provided between the upper restricting portion 124 and the upper restricting portion 125 with a predetermined interval R1 in the vertical direction.

  The lower restricting portion 26 is provided at a position that does not overlap with the upper restricting portion 124 and the upper restricting portion 125 when viewed from above, and is continuously provided in front of and behind the lower restricting portion 251. The lower restricting portion 26 is provided with an interval R2 (R2> R1) larger than the interval R1 in the vertical direction between the upper restricting portion 124 and the upper restricting portion 125. The lower restricting portion 26 is inclined downward in a direction away from the upper restricting portion 124 or the upper restricting portion 125 and is inclined downward at an angle corresponding to the outer diameter of the electric wire S and the number of windings of the electric wire S. For example, when the electric wire S is wound around the winding part 121 twice, the interval R2 is inclined downward at an angle such that the outer diameter of the electric wire S is twice or more.

  The terminal portion 31 is exposed between the left and right restricting portions 22 and the left and right restricting portions 23 on the upper surface 25 of the housing 102 and is connected to the electric wire S.

  The connection portion 32 projects downward from the lower surface 27 of the housing 102 and connects to the conductive portion of the mating connector.

  In the electrical connector 100 having the above-described configuration, the electrical connector 100 fitted to the mating connector is engaged with the mating connector by hooking a finger on the upper restricting portion 124 or the upper restricting portion 125 and pulling upward. The combined state can be released. Thereby, the fitting state of the electrical connector 100 and the mating connector can be easily released.

<Connection method between electrical connector and electric wire>
The method for connecting the electrical connector 100 and the electric wire S according to the second embodiment of the present invention will be described in detail below. In the connection method between the electric connector 100 and the electric wire S, the description of the same method as the connection method between the electric connector 1 and the electric wire S is omitted.

  First, the wire S in a state where the insulator on the distal end side is removed and the conductive portion is exposed is inserted between the winding portion 121 and the regulating portion 23, and then the winding portion 121 with respect to the winding portion 121. Winding around the winding part 121 from the inside through the wire holding part 101, winding around the winding part 121 from outside the winding part 121, and winding around the winding part 121. The wire is wound around the winding part 121 from the inside through the electric wire holding part 101. As a result, as shown in FIG. 8, the electric wire S can be wound around the winding portion 121 in an 8-shape when viewed from above. In addition, the electric wire holding unit 101 holds the electric wire S in a state where the middle of the electric wire S wound around the winding unit 121 is crossed.

  At this time, the downward movement of the electric wire S is restricted by the lower restricting portion 26 and the lower restricting portion 251, and the movement of the electric wire S in the direction away from the winding portion 121 in the left and right direction is restricted by the left and right restricting portion 22. Thereby, the electric wire S can be easily wound around the winding part 121. Further, the inclined surface 221 provided at the upper end of the left and right restricting portion 22 can guide the insertion of the electric wire S between the winding portion 121 and the left and right restricting portion 22, and the winding portion 121 and the left and right restricting portion 22. The electric wire S can be easily inserted between the two. Further, by preventing the upper restricting portion 124 and the upper restricting portion 125 from projecting inward in the left-right direction of the winding portion 121, the electric wire S can be easily inserted between the winding portion 121 and the left-right restricting portion 22. can do. Further, the vertical interval R2 between the upper restricting portion 124 or the upper restricting portion 125 and the lower restricting portion 26 is made larger than the vertical interval R1 between the upper restricting portion 124 or the upper restricting portion 125 and the lower restricting portion 251. Thus, when the electric wire S is wound around the winding part 121, the electric wire S can be once moved downward and then hooked on the upper restricting part 124 or the upper restricting part 125. The part 125 can be easily hooked.

  Next, the electric wire S is wound from the outer side of the winding part 121 to the inner side of the winding part 121 so that the rear side wound around the winding part 121 of the electric wire S is pressed from above. It is located between the restricting portion 22 and the left and right restricting portion 23 and located above the terminal portion 31. At this time, by restricting the upward movement of the electric wire S by the upper restricting portion 124 and the upper restricting portion 125, it is possible to prevent the electric wire S from coming out from the winding portion 121. The state wound around the winding part 121 can be maintained.

  Next, the tip end side of the electric wire S is connected to the terminal portion 31.

  Next, the part which protruded ahead from the terminal part 31 of the front end side of the electric wire S is cut | disconnected along the front end surface of the terminal part 31 with the cutter which is not shown in figure, and the electric wire S is made into the state shown in FIG.

  In this state, when the electric wire S is pulled rearward, the electric wire S is pressed against the winding portion 121. By winding the surface of the winding portion 121 in contact with the folded portion S1 of the electric wire S, winding is performed. Since the load applied to the electric wire S from the portion 121 can be dispersed, the electric wire S can be prevented from being damaged by the winding portion 121 and the electric wire S can be prevented from being cut. Moreover, since the electric wire S is wound around the winding portion 121 so as to tighten the winding portion 121, it is possible to prevent a tensile force from being directly applied to the connection portion of the electric wire S with the terminal portion 31. Connection failure with 31 can be prevented.

  Here, the electric wire S can be wound around the winding portion 121 a desired number of times by providing the lower restricting portion 26 so as to have an interval R2 according to the outer diameter and the number of turns of the electric wire S. Further, when the connection strength between the electric wire S and the terminal portion 31 is high, the electric wire S can be wound around the outer periphery of the winding portion 121 without going through the electric wire holding portion 101.

  Thus, according to the present embodiment, in addition to the effects of the first embodiment, the electric wire S is held by the electric wire holding unit 101 in a state where the middle of the electric wire S wound around the winding unit 121 is crossed. By doing, the load added to the connection part of the electric wire S and the terminal part 31 when the electric wire S is pulled can be further reduced.

  In addition, in this embodiment, although the electric wire holding part 101 was provided only in one of a pair of winding parts, and the electric wire S was wound in 8 shape, the electric wire holding part 101 was provided in both of a pair of winding parts. You may wind the electric wire S in the shape of figure 8.

  Moreover, in this embodiment, although the electric wire S was wound around the winding part 121 in 8 character shape, you may wind the electric wire S in shapes other than 8 character shape around a winding part.

  Moreover, in this embodiment, the middle part of the electric wire S wound around the winding part 121 is crossed and held in the electric wire holding part 101, but when the connection strength between the electric wire S and the terminal part 31 is high strength. The electric wire S can be wound around the outer periphery of the winding part 121 without going through the electric wire holding part 101. Thus, in this embodiment, when winding the electric wire S around the winding part 121 without passing through the electric wire holding part 101, and when winding the electric wire S around the winding part 121 via the electric wire holding part 101, Can be selected.

  In this embodiment, the upper restricting portion 124 protrudes outward in the front and left / right directions at the upper end of the winding portion 121, and the upper restricting portion 125 is rearward and left / right in the upper end of the winding portion 121. However, it is possible to provide the upper restricting portion so as to protrude forward or backward at the upper end of the winding portion and not to protrude outward or inward in the left-right direction. In this case, the width of the housing 102 in the left-right direction can be reduced, and the electrical connector can be reduced in size.

(Third embodiment)
<Configuration of electrical connector>
The configuration of the electrical connector 300 according to the third embodiment of the present invention will be described in detail below with reference to FIGS. In FIG. 12, one electric wire S is connected to the electrical connector 300, but two electric wires S may be connected to the electric connector 300.

  The electrical connector 300 according to this embodiment is connected to an electric wire S such as an enameled wire, and has a housing 302 and a contact 303.

  The housing 302 is made of an insulating material, and includes a winding part 321, a left / right restriction part 322, a left / right restriction part 323, an upper restriction part 324, and an upper surface 325.

  The winding part 321 is wound with the electric wire S. The winding part 321 is erected on the rear side of the upper surface 325. The winding portion 321 is provided at the tip (rear) of the terminal portion 331 in the extending direction (rear) of the electric wire S extending from the terminal portion 331.

  The left / right restricting portion 322 is erected on the upper surface 325 and is provided side by side with the terminal portion 331 in the left / right direction, and extends from the front end to the rear end of the upper surface 325. The left and right restricting portion 322 is in contact with the end portion of the terminal portion 331 in the left and right direction. The left and right restricting portions 322 are provided in the same number as the number of electric wires S connected to the electrical connector 300, and two in the present embodiment are provided.

  The left / right restricting portion 323 is erected on the upper surface 325 and is provided side by side with the terminal portion 331 in the left / right direction, and faces the left / right restricting portion 322 with the terminal portion 331 interposed therebetween. The left and right restricting portion 323 extends from the front end to the rear end of the upper surface 325. The left and right restricting portion 323 is in contact with the end portion of the terminal portion 331 in the left and right direction. The right and left restricting portion 323 is erected between the pair of terminal portions 331 when the two electric wires S are connected to the electrical connector 300 as in the present embodiment.

  The upper restricting portion 324 is formed to protrude rearward from the winding portion 321 at the upper end of the winding portion 321.

  The upper surface 325 is a flat surface that is flat along the yz plane.

  The contact 303 is formed of a conductive material and is held in the housing 302 by integral molding, and includes a terminal portion 331 and a connection portion 332.

  The terminal portion 331 is exposed on the upper surface 325 of the housing 302 and connected to the electric wire S. A pair of terminal portions 331 are provided at the front and rear. The terminal portion 331 on the rear side is provided around the winding portion 321.

  The connection portion 332 projects downward from the lower surface of the housing 302 and connects to the conductive portion of the mating connector.

  In the electrical connector 300 having the above configuration, the terminal portion 331 and the winding portion 321 are arranged in a line in the front-rear direction, the arrangement direction of the terminal portion 331 and the winding portion 321, and the extending direction of the electric wire S. Are in the same direction.

<Connection method between electrical connector and electric wire>
The method for connecting the electrical connector 300 and the electric wire S according to the third embodiment of the present invention will be described in detail below.

  First, the electric wire S in a state where the insulator on the distal end side is removed and the conductive portion is exposed is wound around the winding portion 321.

  Next, the electric wire S is wound around the winding portion 321 so that the rear side wound around the winding portion 321 of the electric wire S is pressed from above, and the distal end side of the electric wire S is set to the left and right restricting portions 322 and 323. And located above the terminal portion 331. At this time, by restricting the upward movement of the electric wire S by the upper restricting portion 324, it is possible to prevent the electric wire S from coming off from the winding portion 321, and the electric wire S is moved to the winding portion 321. The wound state can be maintained.

  Next, the tip end side of the electric wire S is connected to the terminal portion 331. The electric wire S and the terminal portion 331 are connected by soldering by pulse heat or the like, laser welding or resistance (thermal) welding. At this time, the movement of the electric wire S to be returned to the straight line in the left-right direction is restricted by the left-right restriction part 322 and the left-right restriction part 323, so that the electric wire S can be stably held at the connection position with respect to the terminal part 331. Therefore, working efficiency can be improved, and variation in the connection position of the electric wire S with respect to the terminal portion 331 can be suppressed. Further, by providing a pair of terminal portions 331 in the front-rear direction parallel to the extending direction of the electric wire S, the electric wire S and the pair of terminal portions 331 can be connected, and the electric wire S and the terminal portion 331 are reliably connected. can do.

  Next, a portion protruding forward from the front terminal portion 331 on the distal end side of the electric wire S is cut along the front end surface of the terminal portion 331 with a cutter (not shown), so that the electric wire S is in the state shown in FIG.

  In this state, when the electric wire S is pulled backward, the electric wire S is wound around the winding portion 321 so as to tighten the winding portion 321, so that a tensile force is directly applied to the connection portion of the electric wire S with the terminal portion 331. It is possible to prevent the connection failure between the electric wire S and the terminal portion 331. Moreover, since the part wound around the winding part 321 of the electric wire S can be connected to the terminal part 331, the electric wire S and the terminal part 331 can be connected more firmly. In addition, it is preferable that the surface which contacts the folding | returning part of the electric wire S of the winding part 321 is a curved surface. Thereby, since the load added to the electric wire S from the winding part 321 can be disperse | distributed, there is no possibility that the electric wire S may be damaged by the winding part 321 when the electric wire S wound around the winding part 321 is pulled.

  As described above, according to the present embodiment, when the electric wire S is connected to the terminal portion 331, the right / left restriction portion 322 and the left / right restriction portion 323 provided on the left and right sides of the terminal portion 331 are provided. By restricting the movement of the electric wire S in the left-right direction by the portion 322 and the left-right restricting portion 323, the electric wire S can be stably held.

  Moreover, according to this embodiment, while arranging the terminal part 331 and the winding part 321 in a line along the extending direction of the electric wire S, the arrangement direction of the terminal part 331 and the winding part 321, and the electric wire S The width in the left-right direction of the electrical connector 300 can be reduced by making the extending direction of the same direction the same.

  In addition, according to the present embodiment, the poor connection between the electric wire S and the terminal portion 331 by providing the winding portion 321 at the tip of the terminal portion 331 in the extending direction of the electric wire S extending from the terminal portion 331. Can be surely prevented.

  In the present invention, the type, arrangement, number, and the like of the members are not limited to the above-described embodiments, and the constituent elements thereof are appropriately replaced with those having the same effects and the like without departing from the gist of the invention. Of course, it can be appropriately changed.

  Specifically, in the first to third embodiments, the electrical connector is connected to the two electric wires S. However, one or three or more arbitrary numbers of the electric wires S and the number of the electric wires S are used. As many contacts as the number of electric wires S can be provided.

  Further, in the first to third embodiments, the contact is provided in the housing by integral molding. However, the contact may be provided by press-fitting into the housing.

  In the first to third embodiments, the contact terminal portion is exposed at the front end of the upper surface of the housing. However, the contact terminal portion is exposed between the front end and the rear end of the upper surface of the housing. You may let them.

  Moreover, in the said 1st Embodiment to 3rd Embodiment, the electric wire connected to the contact of an electrical connector is not restricted to an enameled wire, Arbitrary wires can be connected to the contact of an electrical connector.

  The electrical connector of the present invention is suitable for connecting to an electric wire such as an enameled wire.

DESCRIPTION OF SYMBOLS 1 Electrical connector 2 Housing 3 Contact 21 Winding part 22 Right and left restricting part 23 Left and right restricting part 24 Upper restricting part 25 Upper surface 26 Lower restricting part 27 Lower surface 28 Recessed part 31 Terminal part 32 Connection part 100 Electric connector 101 Electric wire holding part 102 Housing 121 winding Attachment part 124 Upper restriction part 125 Upper restriction part 221 Inclined surface 251 Lower restriction part 300 Electrical connector 302 Housing 303 Contact 321 Winding part 322 Left and right restriction part 323 Left and right restriction part 324 Upper restriction part 325 Upper surface 331 Terminal part 332 Connection part S Electric wire S1 Folded part

Claims (4)

An electrical connector for connecting to an electric wire,
An insulating housing;
A contact having a terminal portion which is exposed from the housing and connected to the electric wire and which is held by the housing;
Have
The housing is
A winding part in which a surface in contact with a folded portion of the electric wire is wound and a curved surface ;
The left and right restricting portion is
Provided between the winding part and the terminal part,
An electrical connector characterized by that. The housing is
An upper restricting portion that restricts upward movement of the electric wire wound around the winding portion, and the electric wire wound around the winding portion, provided at a position that does not overlap with the upper restricting portion when viewed from above. A lower restricting portion that restricts the downward movement of the
The lower regulating portion is
A central restricting portion provided at a predetermined interval in the vertical direction between the upper restricting portion and a front and rear of the central restricting portion and the vertical restricting portion between the upper restricting portion and the upper restricting portion. An end regulating portion provided with an interval larger than the predetermined interval,
The electrical connector according to claim 1 . The winding part is
A holding part that enables holding the electric wire in a state where the middle of the wound electric wire is crossed,
The electrical connector according to claim 1 or 2 , characterized in that The winding part and the terminal part are:
Arranged in a line along the extending direction of the electric wire extending from the terminal portion,
The electrical connector according to claim 1.

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