JP6610955B2 - connector - Google Patents

Description

  The technology disclosed in this specification relates to a connector.

  Conventionally, a connector including a thermistor for detecting temperature is known (for example, see Patent Document 1). Specifically, an outlet (corresponding to a connector) described in Patent Document 1 includes a metal connection terminal, a thermistor as a temperature detection element, and an insulating heat conductive material bonded to the metal connection terminal and the thermistor. The heat generated at the metal connection terminal is transmitted to the thermistor through the insulating heat conductive material.

JP 2002-352635 A

  As described above, the thermistor described in Patent Document 1 is bonded to the insulating heat conductive material. On the other hand, it is also possible to close the electric wire to the thermistor by inserting the electric wire into the cylindrical portion of the connector and pressing the thermistor against the inner wall surface of the cylindrical portion with the electric wire. However, in that case, if an attempt is made to insert the electric wire into the tube portion while being pressed against the thermistor, a large force is required, and thus a jig is required when assembling the electric wire.

  In this specification, the technique which can assemble | attach an electric wire by hand without using a jig | tool in the connector which an electric wire adheres to a thermistor is disclosed.

  The connector disclosed in this specification includes an electric wire, a retainer having a cylindrical portion into which the electric wire is inserted, a thermistor accommodated in the cylindrical portion, and attached to the retainer, and the electric wire is connected to the thermistor. A thermistor holder that is pressed toward the surface.

  According to the above connector, by attaching the thermistor holder after first inserting the electric wire into the cylindrical portion, the thermistor can be pressed against the inner wall surface of the cylindrical portion while reducing the force when inserting the electric wire. Thereby, in the connector in which the electric wire is in close contact with the thermistor, the electric wire can be assembled by hand without using a jig.

  The thermistor holder is attached from the axial direction of the cylindrical portion, and is inserted between the electric wire and the inner wall surface of the cylindrical portion on the opposite side of the thermistor with the electric wire interposed therebetween. You may have a tongue part pressed toward the thermistor.

  According to said connector, an electric wire can be pressed toward a thermistor by inserting a tongue part from the axial direction of a cylinder part between an electric wire and the inner wall face of a cylinder part.

  Further, a plurality of ridges extending in the axial direction of the cylindrical portion may be formed on a surface of the tongue portion facing the electric wire side, and the plurality of ridges may be in pressure contact with the electric wire.

  According to the above connector, since the surface of the tongue facing the electric wire side can be reduced in area as compared with the case where the entire surface is pressed against the electric wire, the electric wire and the tongue when inserting the tongue can be reduced. The frictional force with the part is reduced, and the force required when attaching the thermistor holder can be reduced.

  Further, two projecting portions projecting inward from the inner wall surface of the tubular portion, provided on both sides of the thermistor in the inner circumferential direction of the tubular portion, and two in pressure contact with the electric wire And an overhang portion.

  According to the above connector, part of the force by which the electric wire presses the thermistor against the inner wall surface of the cylinder part is received by the two overhangs, so the thermistor may be damaged by pressing the thermistor with excessive force. It is possible to suppress the tearing of the coating.

  Moreover, the recessed part for the said electric wire to deform | transform may be formed in the inner wall face of the said cylinder part.

  According to said connector, it becomes possible to deform | transform so that a part of electric wire may enter into a recessed part. For this reason, a part of the force by which the electric wire presses the thermistor against the inner wall surface of the cylindrical portion can be released as a force that deforms the electric wire. Thereby, it can suppress that an electric wire presses a thermistor with an excessive force.

  According to the technique disclosed in the present specification, in a connector in which the electric wire is in close contact with the thermistor, the electric wire can be assembled by hand without using a jig.

The perspective view which looked at the retainer concerning an embodiment from the back side Front view of the housing from the front side Front view of retainer and thermistor holder viewed from the rear Front view of the retainer from the front Side view of retainer Sectional view of the AA line shown in FIG. Perspective view of the thermistor holder seen from the front Front view of the thermistor holder viewed from the front

<Embodiment>
An embodiment will be described with reference to FIGS. In the following description, the vertical direction, the front-rear direction, and the left-right direction are based on the vertical direction, the front-rear direction, and the left-right direction shown in FIG.

(1) Configuration of Connector The connector according to this embodiment is a so-called charging inlet to which a charging gun for charging a power storage device mounted on an electric vehicle, a hybrid vehicle, or the like is connected.
The connector detects the temperature of the housing 9 (see FIG. 2) to which the charging gun is connected from the front, the retainer 11 (see FIG. 1) attached to the housing 9 from the rear, the plurality of wires 10 (see FIG. 1), and the wires 10. A thermistor 12 (see FIG. 6), a temperature detection line 13 (see FIG. 1) connected to the thermistor 12, a thermistor holder 14 (see FIG. 3), a cover (not shown) attached to the retainer 11 from the rear, and the like. It is configured.
In addition, although a connector draws out several electric wires back besides the electric wire 10 mentioned above, electric wires other than the electric wire 10 are abbreviate | omitted in FIG.

  Terminals such as power terminals and signal terminals are accommodated in the housing 9, and two electric wires 10 connected to the power terminals and electric wires connected to the signal terminals (electric wires other than the electric wires 10 described above) are included in the housing 9. The terminals are pulled out from the rear, and the retainers 11 collectively block the terminals.

  As shown in FIG. 1, the retainer 11 has a circular and plate-like substrate portion 15, an annular portion 16 extending in an annular shape rearward with a position shifted upward from the center of the substrate portion 15, a substrate Four retainer mounting pieces 17 provided in a form projecting forward (front side in the mounting direction to the housing 9) from the peripheral portion of the portion 15, four cover mounting portions 18 provided on the outer peripheral surface of the annular portion 16, Four cover positioning portions 19 provided in a form protruding rearward (backward in the mounting direction to the housing 9) from the peripheral portion of the substrate portion 15, the drainage portion 20 provided at the lower end portion of the substrate portion 15, and the like. I have.

  The retainer mounting piece 17 can be elastically bent. When the retainer 11 is mounted on the housing 9 from the rear, the retainer mounting piece 17 rides on the protrusion provided on the housing 9 and then elastically returns to the normal mounting position. The retainer 11 is held in the housing 9 by being locked to the housing 9.

  The four cover mounting portions 18 are for locking elastically deformable locking pieces provided on a cover (not shown). The four cover positioning portions 19 are for engaging the cover to position the cover.

  The drainage unit 20 is for draining water that has flowed into the housing 9 from the front to the rear, and is provided at the lower end of the substrate unit 15. As shown in FIG. 4, a drain port 20 </ b> A that extends in a substantially funnel shape as shown in FIG. 4 and a drain cylinder unit 20 </ b> B that extends in a cylindrical shape from the drain port 20 </ b> A as shown in FIG. Is formed. A drain hose (not shown) for discharging the water flowing into the cylinder part 20B from the drain outlet 20A is connected to the cylinder part 20B for drainage.

  In addition, as shown in FIG. 6, the retainer 11 includes two terminal holding portions 21 and seven terminal holding portions 22 provided in a form penetrating the substrate portion 15 in the plate thickness direction inside the annular portion 16. It is integrally formed. The terminal holding unit 21 holds a power terminal, and the terminal holding unit 22 holds a signal terminal. The terminal holding part 21 is an example of a cylindrical part.

  Each terminal holding portion 21 and 22 has a cylindrical shape. Each terminal described above is provided with a flange on the outer periphery, and a portion on the rear side of the flange is inserted into the terminal holding portions 21 and 22 from the front. Each of the terminal holding portions 21 and 22 has a portion extending to the front side from the base plate portion 15, and an annular tip surface of the portion extending to the front side abuts against the flange of the terminal from the rear side to thereby connect each terminal. It is prevented from coming out while being accommodated in the housing 9. And the electric wire connected to each terminal is pulled out from each terminal holding part 21 and 22 back.

  Further, the thermistor 12 is accommodated in the terminal holding portion 21. The thermistor 12 is pressed against the inner wall surface of the terminal holding portion 21 by the electric wire 10, and is sandwiched between the electric wire 10 and the inner wall surface of the terminal holding portion 21.

  Here, in the present embodiment, the thermistor 12 has a rectangular cross section orthogonal to the axial direction of the terminal holding portion 21. Further, a temperature detection line 13 for outputting the detected temperature is connected to the rear end portion of the thermistor 12. The cross section of the temperature detection line 13 is also rectangular and is drawn backward from the terminal holding portion 21.

  In addition, two projecting portions 23 projecting inward from the inner wall surface of the terminal holding portion 21 are provided on the inner wall surface of the terminal holding portion 21. The two overhang portions 23 are provided on both sides of the thermistor 12 in the inner peripheral direction of the terminal holding portion 21. The two overhanging portions 23 are formed in a curved shape in which the surface facing the electric wire 10 side is along the outer peripheral surface of the electric wire 10, and the curved surfaces are in pressure contact with the electric wire 10.

  Further, a concave portion 24 is formed on the inner wall surface of the terminal holding portion 21 on the opposite side to the thermistor 12 with the overhang portion 23 interposed therebetween. The two concave portions 24 extend in the axial direction of the terminal holding portion 21. The electric wire 10 is deformed so as to project in the left-right direction by being pressed against the thermistor 12 and the two projecting portions 23, and the deformed portion is accommodated in the recess 24.

  Next, the thermistor holder 14 will be described with reference to FIGS. 3, 7 and 8. As shown in FIG. 3, in the present embodiment, the thermistor holder 14 attached to the left terminal holding portion 21 and the thermistor holder 14 attached to the right terminal holding portion 21 are connected by a connecting portion 25 to form one member. It is configured.

  As shown in FIG. 7, each thermistor holder 14 is roughly formed in a bottomed cylindrical shape that is externally fitted to the terminal holding portion 21. Two slits extending from the front side toward the rear side are formed on the annular side wall 14A of the thermistor holder 14, and a portion between the two slits constitutes a holder mounting portion 14B that can be elastically deformed.

  The holder mounting portion 14B is formed with a slit extending from the rear side toward the front side to facilitate elastic deformation. When the thermistor holder 14 is mounted on the terminal holding portion 21 from the rear, the holder mounting portion 14B rides on a projection (not shown) provided on the outer peripheral surface of the terminal holding portion 21 and then elastically returns to the normal mounting position. The thermistor holder 14 is held by the terminal holding portion 21 by being locked to the protrusion.

  As shown in FIG. 8, a through hole 14 </ b> D through which the electric wire 10 and the temperature detection wire 13 are inserted is formed in the bottom wall 14 </ b> C of the thermistor holder 14. The through hole 14D is formed in a shape in which a rectangular through hole 14F is connected to a straight line portion on the upper side of a race track-shaped through hole 14E composed of two straight lines and two arcs extending in parallel in the left-right direction.

  In the through hole 14D, the electric wire 10 having a circular cross section is inserted into the through hole 14E having a racetrack shape, and the temperature detection line 13 having a rectangular cross section is inserted into the rectangular through hole 14F. The lateral width of the rectangular through hole 14F is narrower than the lateral width of the thermistor 12, and when the thermistor holder 14 is attached to the terminal holding portion 21, the thermistor 12 is prevented from coming off by the thermistor holder 14.

  Further, the bottom wall 14C of the thermistor holder 14 is provided with a tongue portion 14G at the lower opening edge of the through hole 14D. As shown in FIG. 7, the tongue portion 14G extends in a cantilevered manner from the bottom wall 14C toward the front side. Further, as shown in FIG. 8, the tongue portion 14G is integrally formed with three protrusions 14H extending in the front-rear direction (that is, the axial direction of the terminal holding portion 21) on the surface facing the upper side (that is, the surface facing the electric wire 10 side). Has been. These three protrusions 14H press the electric wire 10 toward the thermistor 12.

  Here, since the electric wire 10 has a circular cross section, the positions of the upper ends of the protrusions 14H between the three protrusions 14H so that the three protrusions 14H are pressed against the electric wires 10 with substantially equal force are the positions of the upper ends of the protrusions 14H on both sides. It is lower. Moreover, as shown in FIG. 7, the taper surface which inclines below toward the front side is formed in the upper surface of the front-end | tip part of each protrusion 14H. This tapered surface is for facilitating insertion of the tongue portion 14G between the electric wire 10 and the inner wall surface of the terminal holding portion 21.

(2) Assembly of electric wire In the assembly of the electric wire 10, first, the thermistor 12 is inserted into the two terminal holding portions 21 from the rear side. And the rear-end part of the electric wire 10 in which the power terminal is connected to the front-end | tip is inserted in the terminal holding part 21 from the front side, and is pulled out to the rear side. Note that the thermistor 12 may be inserted into the terminal holding portion 21 after the electric wire 10 is inserted into the terminal holding portion 21 first. Since the thermistor holder 14 is not yet attached to the retainer 11 at this time, even if the thermistor 12 is not pressed against the inner wall surface of the terminal holding portion 21 by the electric wire 10 or is pressed, the pressing force is small.

  Then, the electric wire 10 and the temperature detection wire 13 drawn rearward from the retainer 11 are inserted into the through hole 14D of the thermistor holder 14 from the front side, and the thermistor holder 14 is attached to the retainer 11 from the rear in that state. At this time, the tongue portion 14G is inserted between the electric wire 10 and the inner wall surface of the terminal holding portion 21 on the opposite side of the thermistor 12 with the electric wire 10 interposed therebetween, so that the electric wire 10 is directed toward the thermistor 12 by the tongue portion 14G. The thermistor 12 is pressed against the inner wall surface of the terminal holding portion 21 by the electric wire 10. As a result, the electric wire 10 is in close contact with the thermistor 12.

  Here, as described above, since the two concave portions 24 are formed on the inner wall surface of the terminal holding portion 21, when the tongue portion 14 </ b> G is inserted, the electric wire 10 is deformed and a part thereof enters the concave portion 24.

(3) Effect of Embodiment According to the connector according to this embodiment described above, the force when inserting the electric wire 10 is obtained by attaching the thermistor holder 14 after inserting the electric wire 10 into the terminal holding portion 21 first. The thermistor 12 can be pressed against the inner wall surface of the terminal holding portion 21 by the electric wire 10 while reducing the size. Thereby, in the connector in which the electric wire 10 is in close contact with the thermistor 12, the electric wire 10 can be assembled manually without using a jig.

  Furthermore, according to the connector according to the present embodiment, the tongue 10 </ b> G is inserted between the electric wire 10 and the inner wall surface of the terminal holding portion 21 from the axial direction of the terminal holding portion 21, so that the electric wire 10 is directed toward the thermistor 12. Can be pressed.

  Furthermore, according to the connector which concerns on this embodiment, the some protrusion 14H extended in the axial direction of the terminal holding | maintenance part 21 is formed in the surface which faces the electric wire 10 side of the tongue part 14G, and these some protrusion 14H is an electric wire. 10, the area of the tongue portion 14 </ b> G facing the electric wire 10 side can be reduced in area as compared with the case where the entire surface is pressed against the electric wire 10. For this reason, the frictional force between the electric wire 10 and the tongue portion 14G when inserting the tongue portion 14G is reduced, and the force required when attaching the thermistor holder 14 can be reduced.

  Furthermore, according to the connector according to the present embodiment, part of the force by which the electric wire 10 presses the thermistor 12 against the inner wall surface of the terminal holding portion 21 is received by the two overhanging portions 23, so It is possible to suppress the thermistor 12 from being damaged by pressing 12 and the covering of the electric wire 10 from being torn.

  Furthermore, according to the connector according to this embodiment, since the recess 24 for deforming the electric wire 10 is formed on the inner wall surface of the terminal holding portion 21, the electric wire 10 is deformed so that a part thereof enters the recess 24. Is possible. For this reason, a part of the force that the electric wire 10 presses the thermistor 12 against the inner wall surface of the terminal holding portion 21 can be released as a force that deforms the electric wire 10. Thereby, it can suppress that the electric wire 10 presses the thermistor 12 with an excessive force.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope disclosed by the present specification.

  (1) In the above embodiment, the case where the thermistor holder 14 is provided with the tongue portion 14G extending in a cantilevered manner from the bottom wall 14C toward the front side has been described as an example. On the other hand, for example, a connecting portion that connects the lower side of the tongue portion 14G and the annular side wall 14A of the thermistor holder 14 may be provided integrally, and a notch for passing the connecting portion through the terminal holding portion 21 may be provided. .

  (2) In the above embodiment, the case where the ridge 14H is provided on the tongue portion 14G has been described as an example, but the ridge 14H does not necessarily have to be provided.

  (3) In the above embodiment, the case where the concave portion 24 for deforming the electric wire 10 is formed on the inner wall surface of the terminal holding portion 21 has been described as an example, but the concave portion 24 may not necessarily be formed.

  (4) In the above embodiment, the case where the thermistor holder 14 is locked to the protrusion provided on the outer peripheral surface of the terminal holding portion 21 of the retainer 11 has been described as an example, but the thermistor holder 14 is attached to the substrate portion 15 of the retainer 11. The latch part for latching may be provided, and the thermistor holder 14 may be configured to be latched to the latch part.

  (5) In the above embodiment, the charging inlet is described as an example of the connector, but the connector may be other than the charging inlet.

  (6) Although the retainer has been described as an example in the above embodiment, the retainer may be a housing.

  (7) In the above embodiment, the electric wire 10 is inserted from one opening of the terminal holding portion 21 (cylinder portion) and pulled out from the other opening, and the electric wire is drawn from the other opening of the terminal holding portion 21 (cylinder portion). The case where the power terminal connected to 10 is outside has been described as an example. On the other hand, the electric wire 10 may be pulled out from both sides of the terminal holding part 21. That is, the electric wire 10 may be inserted through the terminal holding portion 21.

DESCRIPTION OF SYMBOLS 10 ... Electric wire, 11 ... Retainer, 12 ... Thermistor, 14 ... Thermistor holder, 14G ... Tongue part, 14H ... Projection, 21 (21A, 21B) ... Terminal holding part (an example of a cylinder part), 23 ... Overhang part, 24 ... recess

Claims (4)

Electric wires,
A retainer having a cylindrical portion into which the electric wire is inserted;
A thermistor housed in the tube portion;
A thermistor holder attached to the retainer and pressing the wire toward the thermistor;
Equipped with a,
The thermistor holder is attached from the axial direction of the cylindrical portion, and is inserted between the electric wire and the inner wall surface of the cylindrical portion on the opposite side of the thermistor across the electric wire, and the electric wire is inserted into the thermistor. A connector having a tongue that presses toward the connector. Wherein the plurality of protrusions extending in the axial direction of the tubular portion in a surface facing the wire-side of the tongue are formed, the plurality of protrusions are pressed against the electric wire connector according to claim 1. Electric wires,
A retainer having a cylindrical portion into which the electric wire is inserted;
A thermistor housed in the tubular portion;
A thermistor holder attached to the retainer and pressing the wire toward the thermistor;
With
Two projecting portions projecting inward from the inner wall surface of the cylindrical portion, the two projecting portions being provided on both sides of the thermistor in the inner peripheral direction of the cylindrical portion and being in pressure contact with the electric wire comprising a part, connector. Electric wires,
A retainer having a cylindrical portion into which the electric wire is inserted;
A thermistor housed in the tube portion;
A thermistor holder attached to the retainer and pressing the wire toward the thermistor;
With
Recess for the wire is deformed to the inner wall surface of the cylindrical portion is formed, connector.

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