CN108206346B

CN108206346B - Plug with a locking mechanism

Info

Publication number: CN108206346B
Application number: CN201711374099.1A
Authority: CN
Inventors: 川本隆司; 朝熊良昭; 网屋匠
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2016-12-19
Filing date: 2017-12-19
Publication date: 2020-01-03
Anticipated expiration: 2037-12-19
Also published as: CN108206346A; JP6748968B2; JP2018101514A

Abstract

The invention provides a plug capable of improving the distance accuracy between a blade contact and a temperature sensor. The plug (1) is provided with a plurality of blade-shaped contacts (10), a plurality of No. 1 electric wires (61), a plurality of temperature sensors (40), a plurality of No. 2 electric wires (63), a plurality of sensor holders (50), a body (32), a cover (31), and a molded part. The plurality of temperature sensors (40) detect the temperatures of the plurality of blade-shaped contacts (10), respectively. The plurality of sensor holders (50) hold the plurality of temperature sensors (40) in a one-to-one manner. The molding part is formed by molding the inner side and the outer side of a shell composed of a body (32) and a cover (31). A temperature sensor (40) of the plurality of temperature sensors (40) corresponding thereto and a blade contact (10) of the plurality of blade contacts (10) corresponding thereto are press-fitted into the plurality of sensor holders (50), respectively.

Description

Plug with a locking mechanism

Technical Field

The present invention relates generally to a plug, and more particularly, to a plug having a temperature sensor.

Background

Conventionally, a plug having a pair of blades (blade contacts), a ground pin, a core for holding the pair of blades and the ground pin, and a profile formed so as to cover the core has been proposed (japanese laid-open application No. 2015-116079: hereinafter referred to as document 1).

The core has: a synthetic resin body through which the pair of blades and the ground pin penetrate; and a sensor holder made of synthetic resin, which holds the two temperature sensors and is joined to the trunk.

In the plug described in document 1, when the plug is assembled, the pair of blades and the ground pin are inserted through the trunk body so as to couple the trunk body to the sensor holder in a state where one blade is respectively along both wall portions of the sensor holder holding the two temperature sensors.

Disclosure of Invention

Problems to be solved by the invention

In the plug described in document 1, when the plug is assembled, the blades may be inclined due to dimensional variations of the body and the sensor holder, and a gap may be formed between the blades and the wall of the sensor holder.

The invention aims to provide a plug capable of improving the distance precision between a blade-shaped contact and a temperature sensor.

Means for solving the problems

A plug according to an aspect of the present invention includes a plurality of blade-shaped contacts, a plurality of No. 1 wires, a plurality of temperature sensors, a plurality of No. 2 wires, a plurality of sensor holders, a body, a cover, and a mold. The plurality of blade-shaped contacts have wire connection portions, respectively. The 1 st electric wires are connected one-to-one with the electric wire connecting portions of the blade-shaped contacts, respectively. The plurality of temperature sensors detect the temperatures of the plurality of blade-shaped contacts, respectively. The plurality of 2 nd electric wires are connected to the plurality of temperature sensors one to one, respectively. The plurality of sensor holders hold the plurality of temperature sensors in a one-to-one manner. The trunk is box-shaped having an opening on one surface. The body is configured to house the plurality of sensor holders, the plurality of temperature sensors, a part of each of the plurality of 1 st wires, and a part of each of the plurality of 2 nd wires. The cover has a plurality of contact through holes through which the plurality of blade-shaped contacts pass, respectively. The cover is coupled to the body in a manner to close the opening of the body. The molding portion is formed by molding the inside and the outside of a case formed by the body and the cover. A temperature sensor corresponding to one of the temperature sensors and a blade contact corresponding to the one of the blade contacts are press-fitted into each of the plurality of sensor holders.

ADVANTAGEOUS EFFECTS OF INVENTION

The plug of the present invention can improve the accuracy of the distance between the blade-shaped contact and the temperature sensor.

Drawings

Fig. 1 is a perspective view of a plug according to an embodiment of the present invention.

Fig. 2A is a front view of the plug. Fig. 2B is a top view of the plug. Fig. 2C is a right side view of the plug. Fig. 2D is a rear view of the plug.

Fig. 3 shows the plug, and is a sectional view taken along line a-a of fig. 2A.

Fig. 4 is an exploded perspective view of the plug as viewed from the front side thereof.

Fig. 5 is an exploded perspective view of the plug as viewed from the back side thereof.

Fig. 6 is a front view of the plug in a state before the mold portion is formed.

Fig. 7 is a front view of the plug in a state where the cover is detached from the body before the molded part is formed.

Fig. 8 is a perspective view of the plug in a state where the cover is detached from the body in a state before the molded portion is formed.

Fig. 9A is a rear view of the plug in a state where the body is detached from the cover before the molded part is formed. Fig. 9B is an enlarged view of a main part B of fig. 9A. Fig. 9C is an enlarged view of a main part C of fig. 9A.

Fig. 10A is a perspective view of the main components of the plug. Fig. 10B is a perspective view of main parts of the plug viewed from a direction different from that of fig. 10A.

Description of the reference numerals

1 plug, 10-blade contact, 11 contact, 111 tip, 112 base, 12 wire connection, 13 connection, 14 wire holding, 20 ground blade, 22 ground wire connection, 31 cover, 312 contact through hole, 313 ground blade through hole, 32 body, 321 bottom wall, 322 peripheral wall, 33 mold, 38 case, 40 temperature sensor, 42 coating, 421 1 st surface, 422 nd surface, 2 nd surface, 43 heat transfer plate, 431 surface, 44 lead terminal, 45 lead terminal, 50 sensor holder, 51 st surface, 511 tip surface, 52 nd surface, 2 nd wall, 53 base, 54a 3 rd wall, 54b 4 th wall, 55 temperature sensor pressing rib, 56 contact pressing rib, 57 st rib, 58 nd rib, 59 protrusion, 61 st wire, 611 conductor part, 612 insulating coating, 62 ground wire, 63 nd wire.

Detailed Description

(embodiment mode)

Hereinafter, the plug 1 of the present embodiment will be described with reference to fig. 1 to 10B.

The plug 1 is an example of a plug conforming to the specifications of GB 1002-2008 of the people's republic of china. The header 1 includes a plurality of (two) blade-shaped contacts 10, one ground blade 20, a header main body 30, a plurality of (two) temperature sensors 40 (fig. 4, 5, 9A, 9B, 9C, 10A, and 10B), a plurality of (two) sensor holders 50 (fig. 4, 5, 7 to 10A, and 10B), and a cable 60. The two blade-shaped contacts 10 and the one ground blade 20 each have conductivity. Hereinafter, for convenience of explanation, one of the two blade contacts 10 may be referred to as a 1 st blade contact 10A, and the other may be referred to as a 2 nd blade contact 10B. For convenience of explanation, one of the two temperature sensors 40 may be referred to as a 1 st temperature sensor 40A, and the other may be referred to as a 2 nd temperature sensor 40B. For convenience of explanation, one of the two probe holders 50 may be referred to as a 1 st probe holder 50A, and the other may be referred to as a 2 nd probe holder 50B. The plug main body 30 has a housing 38, and the housing 38 has electrical insulation.

As shown in fig. 4, 5, 7, 8, 9A, 9B, and 9C, the cable 60 includes a plurality of (two) 1 st electric wires 61, one ground wire 62, a plurality of (two) 2 nd electric wires 63, and a sheath 66. At the 1 st end of the cable 60, the 1 st electric wires 61, the ground wire 62, and the 2 nd electric wires 63 are exposed from the sheath 66, and the 2 nd end of the cable 60 is connected to an arbitrary device. Examples of the optional device include a charge controller having a ccid (charge Circuit Interrupt device), a plug, and a socket. Any device is not a necessary structural element of the plug 1. Hereinafter, for convenience of explanation, one of the two 1 st electric wires 61 may be referred to as a 1 st electric wire 61A, and the other 1 st electric wire 61 may be referred to as a 2 nd electric wire 61B. The 1 st current carrying line 61A and the 2 nd current carrying line 61B are voltage lines. Hereinafter, for convenience of explanation, one of the two 2 nd electric wires 63 may be referred to as a 1 st signal wire 63A, and the other may be referred to as a 2 nd signal wire 63B. The 1 st current carrying line 61A is electrically connected to the 1 st blade contact 10A, the 2 nd current carrying line 61B is electrically connected to the 2 nd blade contact 10B, the ground line 62 is electrically connected to the ground blade 20, the 1 st signal line 63A is electrically connected to the 1 st temperature sensor 40A, and the 2 nd signal line 63B is electrically connected to the 2 nd temperature sensor 40B.

The two blade-shaped contacts 10 each have electrical conductivity. Here, the material of each of the two blade-shaped contacts 10 is, for example, brass, but is not limited thereto. As shown in fig. 3 and 5, each of the two blade-shaped contacts 10 has a contact portion 11, a wire connection portion 12, a connection portion 13, and a wire holding portion 14. The two blade-shaped contacts 10 are formed by bending the conductive plate.

The electric wire connection portion 12 is rectangular in shape. The 1 st energization wire 61A is connected to the wire connecting portion 12 of the 1 st blade-shaped contact 10A. The 2 nd energization wire 61B is connected to the wire connecting portion 12 of the 2 nd blade contact 10B. As shown in fig. 7 and 8, each of the two 1 st electric wires 61 is an insulated coated electric wire including a conductor portion 611 and an insulating coating layer 612 that coats the conductor portion 611. In the two 1 st electric wires 61, the portions of the respective conductor portions 611 not covered with the insulating coating 612 are electrically connected to the electric wire connection portion 12. The conductor portion 611 and the wire connecting portion 12 are connected by welding, but the present invention is not limited thereto, and may be connected by brazing, for example.

The contact portion 11 has an elongated rectangular plate shape. The contact portion 11 is disposed so that the longitudinal direction thereof is aligned with the thickness direction of the cover 31. Here, the contact portion 1 penetrates the contact penetration hole 312 of the cover 31. More specifically, the contact portion 11 of the 1 st blade contact 10A penetrates the 1 st contact through hole 312A of the cover 31, and the contact portion 11 of the 2 nd blade contact 10B penetrates the 2 nd contact through hole 312B of the cover 31. The contact portion 11 has a base end 112 located inside the housing 38 and a tip end 111 located outside the housing 38. The tip 111 side of the contact portion 11 is used for electrical connection with a socket corresponding to the plug 1.

The plurality of blade-shaped contacts 10 are arranged such that the longitudinal directions of the contact portions 11 are parallel to each other. In the header 1, the 1 st blade contact 10A and the 2 nd blade contact 10B are arranged with their respective longitudinal directions parallel to the 1 st direction (the front-rear direction of the header 1, the left-right direction of fig. 2C) and at intervals in the 2 nd direction (the left-right direction of the header 1, the left-right direction of fig. 2A) orthogonal to the 1 st direction. Hereinafter, a direction orthogonal to the 1 st direction and the 2 nd direction will be described as a 3 rd direction (a vertical direction of the plug 1, a vertical direction of fig. 2A). The larger of the two angles formed by the thickness direction and the 3 rd direction of the 1 st blade-shaped contact 10A is, for example, 120 degrees. Further, the larger angle of the two angles formed by the thickness direction and the 3 rd direction of the 2 nd blade-shaped contact 10B is, for example, 120 degrees. In short, the thickness direction of the 1 st blade-shaped contact 10A is not parallel to the thickness direction of the 2 nd blade-shaped contact 10B. The smaller angle of the angles formed by the thickness direction of the 1 st blade contact 10A and the thickness direction of the 2 nd blade contact 10B is, for example, 120 degrees.

As shown in fig. 3, the connection portion 13 connects the base end 112 of the contact portion 11 and the end of the wire connection portion 12 on the cover 31 side. Here, the distance between the cover 31 and the coupling portion 13 in the thickness direction of the cover 31 is longer than the length of the portion of the contact portion 11 disposed inside the housing 38. Further, the contact portion 11 and the wire connecting portion 12 are displaced in the direction along the thickness direction of each other, and the distance between the wire connecting portion 12 and the peripheral wall 322 of the body 32 is larger than the distance between the contact portion 11 and the peripheral wall 322 of the body 32. When viewed from the thickness direction of the cover 31, the coupling portion 13 of each of the plurality of blade-shaped contacts 10 overlaps the base portion 53 of the sensor holder 50.

As shown in fig. 5, 7, and 8, each of the plurality of blade-shaped contacts 10 further includes a wire holding portion 14. The wire holding portion 14 protrudes outward from one widthwise edge of the wire connecting portion 12. The wire holding portion 14 surrounds the 1 st wire 61 connected to the wire connecting portion 12 in the outer circumferential direction and holds the 1 st wire 61. The wire holding portion 14 is C-shaped when viewed from the width direction of the wire connecting portion 12. The wire holding portion 14 is clamped after the 1 st wire 61 is inserted. The width of the wire connecting portion 12 is wider than the width of the contact portion 11 and the width of the connecting portion 13.

The ground blade 20 has conductivity. Here, the material of the ground blade 20 is, for example, brass, but is not limited thereto. As shown in fig. 5, the ground blade 20 includes a ground contact portion 21, a ground wire connection portion 22, a connection portion 23, and a ground wire holding portion 24. The ground blade 20 is formed by bending a conductive plate.

The ground line connection portion 22 is rectangular plate-shaped. The ground line 62 is connected to the ground line connection portion 22. As shown in fig. 7 and 8, the ground wire 62 is an insulated coated wire including a conductor section 621 and an insulating coating 622 that coats the conductor section 621. In the ground line 62, a portion of the conductor portion 621 not covered with the insulating cover 622 is electrically connected to the ground line connection portion 22. The conductor part 621 and the ground line connection part 22 are connected together by welding, but the present invention is not limited thereto, and may be connected together by brazing, for example. The ground wire holding portion 24 is clamped after the ground wire 62 is inserted therethrough.

The ground contact portion 21 has an elongated rectangular plate shape. The ground contact portion 21 is arranged such that the longitudinal direction thereof is aligned with the thickness direction of the cover 31. Here, the ground contact portion 21 penetrates the ground blade penetrating hole 313 of the cover 31 (see fig. 4). As shown in fig. 5, the ground contact 21 has a base end 212 located inside the housing 38 and a tip end 211 located outside the housing 38. The distal end 211 side of the ground contact portion 21 is used for electrical connection with a ground blade holder of a receptacle corresponding to the plug 1.

The ground blade 20 is disposed such that the longitudinal direction of the ground contact portion 21 is parallel to the longitudinal direction of the contact portion 11 of the blade contact 10. The dimension of the ground blade 20 protruding from the front surface 311 of the cover 31 is larger than the dimension of the blade-shaped contact 10 protruding from the front surface 311 of the cover 31. In the plug 1, the ground blade 20 is disposed so that the thickness direction is the 2 nd direction described above. The smaller of the two angles formed by the thickness direction of the ground edge 20 and the thickness direction of the 1 st blade-shaped contact 10A is, for example, 120 degrees. Further, the smaller of the two angles formed by the thickness direction of the ground edge 20 and the thickness direction of the 2 nd blade-shaped contact 10B is, for example, 120 degrees.

Each of the plurality of temperature sensors 40 is a thermistor, and includes a thermistor element (not shown), a covering portion 42, a pair of

lead terminals

44 and 45, and a heat transfer plate 43. The thermistor element changes its own resistance value according to the ambient temperature.

The coating portion 42 is formed by molding the thermistor element. The covering portion 42 functions as a case for housing the thermistor element. The covering portion 42 has electrical insulation. Here, the covering portion 42 is formed of, for example, PBT resin.

The pair of

lead terminals

44 and 45 are formed of, for example, a steel wire covered with a solder plating layer. The pair of

lead terminals

44 and 45 protrude from the 1 st surface 421 of the covering portion 42. The heat transfer plate 43 protrudes from one end in the thickness direction of the covering 42 on the 2 nd surface 422 of the covering 42 on the opposite side to the 1 st surface 421.

The heat transfer plate 43 protrudes from the 2 nd surface 422 of the covering 42 on the opposite side to the 1 st surface 421. The heat transfer plate 43 is, for example, a copper alloy plate. For example, the heat transfer plate 43 is formed of a terminal.

The Thermistor is, for example, a PTC Thermistor (Positive Temperature Coefficient Thermistor). As the PTC thermistor, for example, a PTC thermistor with a terminal can be used.

As shown in fig. 10A, the lead terminal 44 of the 1 st temperature sensor 40A and the lead terminal 45 of the 2 nd temperature sensor 40B are electrically connected to each other. In short, the 1 st temperature sensor 40A and the 2 nd temperature sensor 40B are connected in series. As shown in fig. 9A, the lead terminal 45 of the 1 st temperature sensor 40A is connected to the 2 nd electric wire 63 (1 st signal wire 63A). The lead terminal 44 of the 2 nd temperature sensor 40B is connected to the 2 nd electric wire 63 (the 2 nd signal wire 63B). As shown in fig. 9A, each of the two 2 nd electric wires 63 is an insulated coated electric wire including a conductor portion 631 and an insulating coating layer 632 covering the conductor portion 631. The 1 st signal line 63A is electrically connected to the lead terminal 45 of the 1 st temperature sensor 40A at a portion of the conductor portion 631 not covered by the insulating coating 632. The 2 nd signal line 63B is electrically connected to the lead terminal 44 of the 2 nd temperature sensor 40B at a portion of the conductor portion 631 not covered with the insulating coating layer 632.

The plurality of temperature sensors 40 are used to detect the temperatures of the plurality of blade-shaped contacts 10, respectively. In more detail, the 1 st temperature sensor 40A is used to detect the temperature of the 1 st blade-shaped contact 10A. The 2 nd temperature sensor 40B is for detecting the temperature of the 2 nd blade-shaped contact 10B.

After the plug main body 30 is explained, the plurality of sensor holders 50 are described in detail.

As shown in fig. 2A, 2B, 2C, 3, and 4, the plug main body 30 includes a body 32, a cover 31, 3 screws 37, and a molded portion 33. The body 32, the cover 31, and the mold 33 are each formed of an electrically insulating resin. The material of the body 32 is PBT, for example. The material of the cover 31 is, for example, melamine resin. The material of the mold 33 is, for example, polyvinyl chloride resin.

As shown in fig. 4 and 7, the trunk 32 has a box shape with an opening on one surface. The outer peripheral shape of the trunk 32 is a substantially hexagonal shape. The trunk body 32 houses a plurality of the sensor holders 50, a plurality of the temperature sensors 40, a part of each of the plurality of 1 st wires 61, and a part of each of the plurality of 2 nd wires 63. Here, as shown in fig. 4, 7, and 8, the trunk 32 is formed such that a T-shaped partition wall 326 for dividing the internal space of the trunk 32 into three spaces protrudes from the bottom wall 321. The wire connection portion 12 of the 1 st holder 50A, the 1 st temperature sensor 40A, and the 1 st blade contact 10A is housed in one of the three spaces, the wire connection portion 12 of the 2 nd holder 50B, the 2 nd temperature sensor 40B, and the 2 nd blade contact 10B is housed in the other space, and the ground wire connection portion 22 of the ground blade 20 is housed in the remaining one space. The 1 st electric wires 61 are arranged along the peripheral wall 322 of the body 32 in the body 32 and overlap each other in the thickness direction of the bottom wall 321 of the body 32. As shown in fig. 7, the plug 1 further has a rib 325, the rib 325 protrudes from the bottom wall 321 of the body 32, and at least one 1 st electric wire 61 of the plurality of 1 st electric wires 61 is held between the rib 325 and the peripheral wall 322.

In the plug 1, a part of the ground wire 62 is housed in the body 32. The ground wire 62 is disposed along the peripheral wall 322 inside the body 32, and overlaps the 1 st electric wire 61 in the thickness direction of the bottom wall 321 of the body 32.

As shown in fig. 4, the cover 31 has a plurality of contact through-holes 312 through which the plurality of blade-shaped contacts 10 are inserted, respectively. Hereinafter, for convenience of description, one of the two contact through holes 312 is referred to as a 1 st contact through hole 312A, and the other is referred to as a 2 nd contact through hole 312B. The cover 31 has a ground blade penetrating hole 313 through which the ground blade 20 penetrates. The plurality of contact through holes 312 and the ground blade through hole 313 pass through the cover 31 in the thickness direction of the cover 31. The cover 31 is combined with the body 32 in such a manner as to cover the opening of the body 32. As shown in fig. 4, the cover 31 and the body 32 are coupled together using three screws 37. The cover 31 is formed with three holes 317 through which the three screws 37 are respectively passed. Body 32 is formed with three screw holes 327 for fitting three screws 37, respectively.

The plug main body 30 includes a body 32 and a cover 31 to form a housing 38. The cover 31 constitutes a front wall portion of the housing 38. Further, the cover 31 constitutes a front wall portion of the plug main body 30.

The housing 38 has a cable through-hole through which the cable 60 passes. A tension-resisting structure for reducing tension applied to the cable 60 is provided on an inner peripheral surface of the cable through-hole. The case 38 is formed with a plurality of holes 381 (see fig. 3 and 6), and the plurality of holes 381 allow the molding material of the mold portion 33 to be injected from the outside to the inside of the case 38.

The molding portion 33 is molded to the inside and outside of the case 38. Thus, the molding material of the mold portion 33 is filled in the case 38 so as not to form a cavity in the case 38. As shown in fig. 2A, 2C, and 2D, the molded portion 33 covers the housing 38 so that the central portion of the front surface 311 of the cover 31 and the cable 60 are exposed. The mold 33 is not a prepared part. Thus, the mold 33 is not depicted in fig. 4 and 5.

Each of the plurality of sensor holders 50 (see fig. 3 to 5 and 7 to 10B) is formed of an electrically insulating resin. The material of each of the plurality of sensor holders 50 is PBT, for example.

As shown in fig. 9A to 10B, in the plug 1, the temperature sensor 40 corresponding to one of the temperature sensors 40 and the blade contact 10 corresponding to the one of the blade contacts 10 are press-fitted into each of the plurality of sensor holders 50. Here, the 1 st temperature sensor 40A and the 1 st blade contact 10A are press-fitted into the 1 st sensor holder 50A. The 2 nd temperature sensor 40B and the 2 nd blade contact 10B are press-fitted into the 2 nd holder 50B. Here, each of the plurality of sensor holders 50 has a base 53, a 1 st wall 51, a 2 nd wall 52, a temperature sensor press-fitting rib 55, a 3 rd wall 54a, a 4 th wall 54b, and a contact press-fitting rib 56.

As shown in fig. 3, the base portion 53 faces a bottom wall 321 of the body 32 in the body 32. The 1 st wall 51 and the 2 nd wall 52 respectively protrude from the base 53 toward the bottom wall 321 of the body 32 and face each other. As shown in fig. 9B to 10B, the temperature sensor press-fitting rib 55 protrudes from the 2 nd wall 52 toward the 1 st wall 51. The temperature sensor press-fitting rib 55 gradually decreases in size protruding from the 2 nd wall 52 toward the 1 st wall 51 toward the distal end of the 2 nd wall 52.

The temperature sensor press-fitting rib 55 holds the corresponding temperature sensor 40 among the plurality of temperature sensors 40 between the temperature sensor press-fitting rib and the 1 st wall 51. The temperature sensor press-fitting rib 55 abuts on a surface 431 of the heat transfer plate 43 on the side opposite to the 1 st wall 51 side. More specifically, the 1 st sensor holder 50A holds the 1 st temperature sensor 40A by the temperature sensor press-fitting rib 55 and the 1 st wall 51. The 2 nd sensor holder 50B holds the 2 nd temperature sensor 40B by the temperature sensor press-fitting rib 55 and the 1 st wall 51.

The 3 rd wall 54a and the 4 th wall 54b are located on both sides in the width direction of the wire connecting portion 12 so as to hold the wire connecting portion 12 of the blade-shaped contact 10 corresponding to the blade-shaped contact 10 among the plurality of blade-shaped contacts 10 between the 3 rd wall 54a and the 1 st wall 51 and between the 4 th wall 54b and the 1 st wall 51 on the side opposite to the 2 nd wall 52 side as viewed from the 1 st wall 51. In more detail, the 3 rd wall 54a is located on the opposite side to the side on which the electric wire holding part 14 protrudes in the width direction of the electric wire connecting part 12. In contrast, the 4 th wall 54b is located on the side where the electric wire holding part 14 protrudes in the width direction of the electric wire connecting part 12.

The contact press-fitting rib 56 protrudes from the 3 rd wall 54a toward the 1 st wall 51. The contact press-fitting rib 56 holds the wire connecting portion 12 between itself and the 1 st wall 51. More specifically, the 1 st probe holder 50A holds the end of the wire connecting portion 12 of the 1 st blade-shaped contact 10A (the portion to which the 1 st wire 61 is not soldered) by the 3 rd wall 54a, the contact press-fitting rib 56, and the 4 th wall 54 b. The 2 nd probe holder 50B holds the end portion (the portion to which the 1 st wire 61 is not soldered) of the wire connecting portion 12 of the 2 nd blade-shaped contact 10B by the 3 rd wall 54a, the contact press-fitting rib 56, and the 4 th wall 54B.

The plurality of sensor holders 50 also have a 1 st rib 57 and a 2 nd rib 58, respectively. The 1 st rib 57 protrudes from the 1 st wall 51 toward the side opposite to the wire connecting portion 12 side on the 1 st surface 421 side of the covering portion 42 of the temperature sensor 40. The 1 st rib 57 overlaps the wire connecting portion 12 in the thickness direction of the 1 st wall 51. The 2 nd rib 58 protrudes from the 2 nd wall 52 toward the 1 st wall 51 on the 2 nd surface 422 side of the coating portion 42 of the temperature sensor 40. In each of the sensor holders 50, the 2 nd rib 58 is arranged such that the distance between the 1 st rib 57 and the 2 nd rib 58 is shorter than the distance between the 1 st rib 57 and the temperature sensor press-fitting rib 55.

Further, each of the plurality of sensor holders 50 has a rib 523 protruding from the 2 nd wall 52 toward the coating portion 42 of the temperature sensor 40. This can restrict movement of the covering portion 42 of the temperature sensor 40 in a direction away from the 1 st wall 51 when the plug 1 is assembled.

In the plurality of the probe holders 50, the 3 rd wall 54a and the 4 th wall 54b are located on the side close to the peripheral wall 322 of the trunk body 32, and the 2 nd wall 52 is located on the side away from the peripheral wall 322 of the trunk body 32 in the thickness direction of the 1 st wall 51.

Further, a plurality of projections 59 projecting from the distal end surface 511 of the 1 st wall 51 are formed on each of the plurality of probe holders 50. The plurality of protrusions 59 are each hemispherical.

The plurality of the probe holders 50 each have two through

holes

531, 532 formed in the thickness direction of the base portion 53 (see fig. 7, 8, and 9B). The opening shape of one through hole 531 of the two through

holes

531, 532 is, for example, circular, and the opening shape of the other through hole 532 is, for example, rectangular. The two through

holes

531, 532 are formed at positions that do not overlap with the temperature sensor 40 that overlaps with the base portion 53 among the plurality of temperature sensors 40. More specifically, the through hole 531 is located on the opposite side of the temperature sensor press-fitting rib 55 from the 1 st rib 57 side when viewed from the thickness direction of the base portion 53. Further, the through hole 532 is located between the temperature sensor press-fitting rib 55 and the 1 st rib 57 when viewed from the thickness direction of the base portion 53.

A method of assembling the plug 1 of the present embodiment will be briefly described. The following description is merely an example, and the method of assembling the plug 1 of the present embodiment is not limited to the following example.

First, the body 32 houses: a 1 st sensor holder 50A into which the 1 st temperature sensor 40A and the 1 st blade-shaped contact 10A are press-fitted; a 2 nd sensor holder 50B into which the 2 nd temperature sensor 40B and the 2 nd blade contact 10B are press-fitted, respectively; a part of the 1 st electric wire 61 connected to the electric wire connecting portion 12 of the 1 st blade-shaped contact 10A; a part of the 1 st electric wire 61 connected to the electric wire connecting portion 12 of the 2 nd blade-shaped contact 10B; a ground blade 20; and a part of the ground wire 62 connected to the ground wire connection portion 22 of the ground blade 20 (see fig. 7).

Thereafter, the cover 31 and the body 32 are coupled to each other by three screws 37 to form a case 38 (see fig. 6). At this time, the 1 st blade contact 10A, the 2 nd blade contact 10B, and the ground blade 20 are inserted through the 1 st contact through-hole 312A, the 2 nd contact through-hole 312B, and the ground blade through-hole 313, respectively (see fig. 4).

Next, the housing 38 and a portion of the cable 60 are disposed within a mold. Thereafter, the mold 33 is formed by filling a molten molding material (for example, polyvinyl chloride or the like) into the mold through a gate of the mold and solidifying the molding material in the case 38. Thereafter, the plug 1 is demolded from the mold. Thereby, the plug 1 of the present embodiment shown in fig. 1 is obtained.

The above-described embodiment is merely one of various embodiments of the present invention. The above-described embodiment may be variously modified according to design and the like as long as the object of the present invention can be achieved.

For example, the Temperature sensor 40 is not limited to the PTC Thermistor, and may be, for example, an NTC Thermistor (Negative Temperature Coefficient Thermistor).

The plurality of the sensor holders 50 are not limited to the configuration having the two through

holes

531, 532, and may have at least one of the two through

holes

531, 532.

In addition, the plug 1 is not necessarily a plug conforming to the specifications of GB 1002-2008. For example, the plug 1 may be a plug conforming to JIS standards of japan.

As is apparent from the above-described embodiment, the plug 1 according to claim 1 includes the plurality of blade-shaped contacts 10, the plurality of 1 st electric wires 61, the plurality of temperature sensors 40, the plurality of 2 nd electric wires 63, the plurality of sensor holders 50, the body 32, the cover 31, and the mold 33. The plurality of blade-shaped contacts 10 each have an electric wire connection portion 12. Each of the 1 st electric wires 61 is connected to the electric wire connection portion 12 of each of the plurality of blade-shaped contacts 10 (the 1 st electric wires 61 are connected to the electric wire connection portions 12 of each of the plurality of blade-shaped contacts 10 one-to-one). The plurality of temperature sensors 40 detect the temperatures of the plurality of blade-shaped contacts 10, respectively. Each of the plurality of 2 nd wires 63 is connected to the plurality of temperature sensors 40 (the plurality of 2 nd wires 63 are connected to the plurality of temperature sensors 40 one by one). The plurality of sensor holders 50 hold each of the plurality of temperature sensors 40 one for one. The trunk 32 has a box shape with an opening on one surface. The body 32 houses the plurality of sensor holders 50, the plurality of temperature sensors 40, a part of each of the plurality of 1 st wires 61, and a part of each of the plurality of 2 nd wires 63. The cover 31 has a plurality of contact through holes 312 through which the plurality of blade-shaped contacts 10 are inserted, respectively. The cover 31 is combined with the body 32 in such a manner as to close the opening of the body 32. The mold 33 is formed by molding the inside and outside of a case 38 composed of the body 32 and the lid 31. The temperature sensor 40 corresponding to the temperature sensor 40 among the temperature sensors 40 and the blade contact 10 corresponding to the blade contact 10 among the blade contacts 10 are press-fitted into the sensor holders 50.

With the above configuration, the header 1 can improve the distance accuracy of the blade-shaped contact 10 and the temperature sensor 40. Thus, the temperature sensor 40 can detect the temperature of the blade contact 10 more accurately for the header 1.

In the plug 1 according to claim 2, in addition to claim 1, each of the plurality of the sensor holders 50 includes a base portion 53, a 1 st wall 51, a 2 nd wall 52, a temperature sensor press-fitting rib 55, a 3 rd wall 54a, a 4 th wall 54b, and a contact press-fitting rib 56. Base portion 53 faces a bottom wall 321 of body 32 within body 32. The 1 st wall 51 and the 2 nd wall 52 respectively protrude from the base 53 toward the bottom wall 321 of the body 32 and face each other. The temperature sensor press-fitting rib 55 protrudes from the 2 nd wall 52 toward the 1 st wall 51. The temperature sensor press-fitting rib 55 holds the corresponding temperature sensor 40 among the plurality of temperature sensors 40 between the temperature sensor press-fitting rib and the 1 st wall 51. The 3 rd wall 54a and the 4 th wall 54b are located on the opposite side of the 1 st wall 51 from the 2 nd wall 52 side, as viewed from the 1 st wall 51 side, on both sides in the width direction of the wire connecting portion 12 so as to hold the wire connecting portion 12 of the blade contact 10 corresponding thereto among the plurality of blade contacts 10 between the 3 rd wall 54a and the 1 st wall 51 and between the 4 th wall 54b and the 1 st wall 51. The contact press-fitting rib 56 protrudes from the 3 rd wall 54a toward the 1 st wall 51. The contact press-fitting rib 56 holds the wire connecting portion 12 between itself and the 1 st wall 51.

With the above configuration, the header 1 can bring the blade-shaped contacts 10 and the temperature sensors 40 in one-to-one correspondence into contact (close contact) with the 1 st wall 51 more reliably. Thus, with the header 1, the distance between the blade contact 10 and the temperature sensor 40 can be made substantially the same as the thickness of the 1 st wall 51, and the temperature sensor 40 can detect the temperature of the blade contact 10 more accurately.

The plug 1 according to claim 3 is the plug according to claim 2, wherein each of the plurality of blade-shaped contacts 10 includes an electric wire connection portion 12, a contact portion 11, and a connection portion 13. The contact portion 11 has a base end 112 located inside the housing 38 and a tip end 111 located outside the housing 38. The contact portion 11 penetrates the corresponding contact through hole 312 of the plurality of contact through holes 312. The coupling portion 13 connects the base end 112 of the contact portion 11 and the end of the wire connecting portion 12 on the cover 31 side. When viewed from the thickness direction of the cover 31, the coupling portions 13 of the plurality of blade-shaped contacts 10 overlap the base portions 53 of the plurality of sensor holders 50 corresponding to the plurality of blade-shaped contacts 10 one by one. This allows the plug 1 to be downsized in the housing 38.

The plug 1 according to claim 4 is the plug according to claim 2 or 3, wherein each of the plurality of temperature sensors 40 is a thermistor, and includes a thermistor element, a covering portion 42, a pair of

lead terminals

44 and 45, and a heat transfer plate 43. The coating portion 42 is formed by molding the thermistor element. The pair of

lead terminals

44, 45 protrude from the 1 st surface 421 along the thickness direction of the covering portion 42. The heat transfer plate 43 protrudes from one end in the thickness direction of the covering 42 on the 2 nd surface 422 of the covering 42 on the side opposite to the 1 st surface 421. The temperature sensor press-fitting rib 55 abuts on a surface 431 of the heat transfer plate 43 on the side opposite to the 1 st wall 51 side. Thus, in the header 1, the heat transfer plate 43 and the electric wire connection portion 12 can be made to face each other with the 1 st wall 51 interposed therebetween, and the temperature sensor 40 can detect the temperature of the blade contact 10 more accurately. Further, when the plug 1 is assembled, the temperature sensor press-fitting rib 55 can be prevented from coming into contact with the covering portion 42, and stress application to the thermistor element can be prevented. This improves the reliability of the plug 1.

The plug 1 according to claim 5 is the plug according to claim 4, wherein the sensor holder 50 further includes a 1 st rib 57 and a 2 nd rib 58, respectively. The 1 st rib 57 protrudes from the 1 st wall 51 toward the opposite side of the wire connecting portion 12 on the 1 st surface 421 side of the coating portion 42. The 1 st rib 57 overlaps with the wire connecting portion 12 in the thickness direction of the 1 st wall 51. The 2 nd rib 58 protrudes from the 2 nd wall 52 toward the 1 st wall 51 on the 2 nd surface 422 side of the coating portion 42. In each of the sensor holders 50, the 2 nd rib 58 is disposed such that the distance between the 1 st rib 57 and the 2 nd rib 58 is shorter than the distance between the 1 st rib 57 and the temperature sensor press-fitting rib 55. Thus, for example, when the plug 1 is assembled, the temperature sensor 40 can be disposed between the 1 st rib 57 and the 2 nd rib 58, and therefore, the displacement of the temperature sensor 40 can be suppressed.

The plug 1 according to claim 6 is the plug according to any one of claims 2 to 5, wherein each of the 1 st electric wires 61 is an insulated coated electric wire including a conductor portion 611 and an insulating coating 612 that coats the conductor portion 611. For the plurality of 1 st electric wires 61, the portion of the conductor portion 611 not covered with the insulating coating 612 is electrically connected to the electric wire connection portion 12. Each of the plurality of blade-shaped contacts 10 further has a wire holding portion 14. The wire holding portion 14 protrudes outward from one widthwise edge of the wire connecting portion 12. The wire holding portion 14 surrounds the 1 st wire 61 corresponding to the 1 st wire 61 among the plurality of 1 st wires 61 in the outer circumferential direction and holds the 1 st wire 61. Thus, the housing 38 can be made thin for the plug 1.

In the plug 1 according to claim 7, in addition to any one of claims 2 to 6, a plurality of projections 59 projecting from the distal end surface 511 of the 1 st wall 51 are formed on each of the plurality of the probe holders 50. Thus, in the plug 1, when the molded portion 33 is formed, the molding material of the molded portion 33 can flow through the gap formed between the 1 st wall 51 and the bottom wall 321 of the body 32, and therefore, the molding material of the molded portion 33 can be more reliably filled in the housing 38. Thus, with the header 1, the formation of a cavity in the housing 38 can be suppressed, and the temperature sensor 40 can detect the temperature of the blade contact 10 more accurately.

The plug 1 according to claim 8 is the plug according to any one of claims 2 to 7, wherein each of the plurality of the sensor holders 50 has a through hole formed in a thickness direction of the base portion 53. The through hole is formed at a position not overlapping with the temperature sensor 40 overlapping with the base 53 among the plurality of temperature sensors 40. Thus, in the plug 1, when the mold portion 33 is formed, the molding material of the mold portion 33 is more reliably filled in the housing 38. Thus, with the header 1, the formation of a cavity in the housing 38 can be suppressed, and the temperature sensor 40 can detect the temperature of the blade contact 10 more accurately.

The plug 1 according to claim 9 is the plug according to any one of claims 2 to 8, wherein the plurality of 1 st wires 61 are arranged along the peripheral wall 322 of the body 32 in the body 32 and overlap each other in the thickness direction of the bottom wall 321 of the body 32. The plug 1 further has a rib 325, the rib 325 protruding from the bottom wall 321 of the body 32, and holds at least one 1 st electric wire 61 of the plurality of 1 st electric wires 61 between the rib 325 and the peripheral wall 322. Thereby, the plug 1 can realize the miniaturization of the molded portion 33 as viewed from the thickness direction of the cover 31. Further, in the plug 1, the tension acting on the 1 st electric wires 61 in the housing 38 can be reduced.

The plug 1 according to claim 10 is the plug according to claim 9, further comprising: a ground blade 20 having a ground wire connection portion 22; and a ground wire 62 connected to the ground wire connection portion 22 of the ground blade 20. The cover 31 further has a ground blade penetrating hole 313 through which the ground blade 20 penetrates. In the plug 1, a part of the ground wire 62 is housed in the body 32. The ground wire 62 is disposed along the peripheral wall 322 inside the body 32, and overlaps the plurality of 1 st wires 61 in the thickness direction of the bottom wall 321 of the body 32. This makes it possible to reduce the thickness of the housing 38 of the plug 1.

In the plug 1 according to claim 11, in addition to claim 9 or 10, the 3 rd wall 54a and the 4 th wall 54b of the plurality of the probe holders 50 are located on the side closer to the peripheral wall 322 of the body 32 in the thickness direction of the 1 st wall 51, and the 2 nd wall 52 is located on the side farther from the peripheral wall 322 of the body 32. Thus, plug 1 can suppress the application of a load to temperature sensor 40 from the outside of molded portion 33, as compared with the case where 2 nd wall 52 is located on the side closer to peripheral wall 322 of trunk 32 in the thickness direction of 1 st wall 51.

Claims

1. A plug, comprising:

a plurality of blade-shaped contacts each having an electric wire connection portion;

a plurality of 1 st electric wires, the plurality of 1 st electric wires being connected one-to-one with the electric wire connection portions of the plurality of blade-shaped contacts, respectively;

a plurality of temperature sensors that detect temperatures of the plurality of blade-shaped contacts, respectively;

a plurality of 2 nd electric wires, the plurality of 2 nd electric wires being connected to the plurality of temperature sensors one-to-one;

a plurality of sensor holders for holding the plurality of temperature sensors one by one;

a case having an opening on one surface and housing the plurality of sensor holders, the plurality of temperature sensors, a part of each of the plurality of 1 st electric wires, and a part of each of the plurality of 2 nd electric wires;

a cover that has a plurality of contact through-holes through which the plurality of blade-shaped contacts respectively pass, and that is coupled to the body so as to close the opening of the body; and

a molding part molded on the inner side and the outer side of the housing composed of the body and the cover,

a temperature sensor corresponding to one of the temperature sensors and a blade contact corresponding to the one of the blade contacts are press-fitted into each of the plurality of sensor holders.

2. The plug of claim 1,

the plurality of sensor holders each have:

a base portion facing a bottom wall of the trunk within the trunk;

a 1 st wall and a 2 nd wall respectively projecting from the base toward the bottom wall and facing each other;

a temperature sensor press-fitting rib that protrudes from the 2 nd wall toward the 1 st wall and holds a corresponding one of the plurality of temperature sensors between the temperature sensor press-fitting rib and the 1 st wall;

a 3 rd wall and a 4 th wall which are located on both sides in a width direction of the wire connecting portion on a side opposite to the 2 nd wall side of the 1 st wall when viewed from the 1 st wall side so as to hold the wire connecting portion of a blade-shaped contact corresponding to the 3 rd wall and the 1 st wall and between the 4 th wall and the 1 st wall among the plurality of blade-shaped contacts; and

and a contact press-fitting rib which protrudes from the 3 rd wall toward the 1 st wall and holds the wire connection portion between the contact press-fitting rib and the 1 st wall.

3. The plug of claim 2,

the plurality of blade-shaped contacts each have: the electric wire connecting portion; a contact portion having a base end located inside the housing and a tip end located outside the housing, and penetrating a corresponding contact through-hole of the plurality of contact through-holes; and a connecting portion connecting a base end of the contact portion and an end of the wire connecting portion on the cover side,

the coupling portions of the blade-shaped contacts overlap the base portions of the sensor holders corresponding to the blade-shaped contacts one by one, respectively, when viewed in the thickness direction of the cover.

4. A plug according to claim 2 or 3,

each of the plurality of temperature sensors is a thermistor and has: a thermistor element; a coating portion formed by molding the thermistor element; a pair of lead terminals protruding from a 1 st surface in a thickness direction of the covering portion; a heat transfer plate protruding from one end in a thickness direction of the clad on a 2 nd surface of the clad on a side opposite to the 1 st surface,

the temperature sensor press-fitting rib abuts against a surface of the heat transfer plate on a side opposite to the 1 st wall side.

5. The plug of claim 4,

the sensor holder further includes: a 1 st rib that protrudes from the 1 st wall to a side opposite to the electric wire connection portion side on the 1 st surface side of the covering portion, and overlaps with the electric wire connection portion in a thickness direction of the 1 st wall; and a 2 nd rib which protrudes from the 2 nd wall toward the 1 st wall on the 2 nd surface side of the coating portion, and the 2 nd rib is disposed such that a distance between the 1 st rib and the 2 nd rib is shorter than a distance between the 1 st rib and the temperature sensor press-fitting rib.

6. A plug according to claim 2 or 3,

the 1 st electric wires are insulated coated electric wires each including a conductor part and an insulating coating layer coating the conductor part,

for the plurality of 1 st electric wires, a portion of the conductor part not covered with the insulating coating is electrically connected to the electric wire connecting part,

each of the plurality of blade-shaped contacts further has an electric wire holding portion,

the wire holding portion protrudes outward from one side edge in the width direction of the wire connecting portion, and surrounds a 1 st wire corresponding to the 1 st wire among the plurality of 1 st wires in the outer circumferential direction and holds the 1 st wire.

7. A plug according to claim 2 or 3,

the plurality of sensor holders are each formed with a plurality of projections projecting from the distal end surface of the 1 st wall.

8. A plug according to claim 2 or 3,

the plurality of sensor holders each have a through hole formed in the thickness direction of the base portion,

the through hole is formed at a position not overlapping with the temperature sensor overlapping with the base among the plurality of temperature sensors.

9. A plug according to claim 2 or 3,

the plurality of 1 st electric wires are arranged along the peripheral wall of the body in the body and are overlapped with each other in the thickness direction of the bottom wall of the body,

the plug further has a rib that protrudes from the bottom wall of the body and holds at least one 1 st electric wire of the plurality of 1 st electric wires between the rib and the peripheral wall.

10. The plug of claim 9, further comprising:

a ground blade having a ground wire connection portion; a ground wire connected to the ground wire connection portion of the ground blade,

the cover further has a ground blade penetrating hole through which the ground blade penetrates,

a part of the grounding wire is received in the body,

the ground wire is arranged along the peripheral wall in the body, and overlaps the 1 st electric wires in a thickness direction of the bottom wall of the body.

11. The plug of claim 9,

with the plurality of the sensor holders, the 3 rd wall and the 4 th wall are located on a side close to the peripheral wall of the trunk in the thickness direction of the 1 st wall, and the 2 nd wall is located on a side away from the peripheral wall of the trunk.