WO2020195082A1 - Ressort hélicoïdal enroulé en diagonale, connecteur et dispositif de connexion électrique - Google Patents

Ressort hélicoïdal enroulé en diagonale, connecteur et dispositif de connexion électrique Download PDF

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Publication number
WO2020195082A1
WO2020195082A1 PCT/JP2020/002512 JP2020002512W WO2020195082A1 WO 2020195082 A1 WO2020195082 A1 WO 2020195082A1 JP 2020002512 W JP2020002512 W JP 2020002512W WO 2020195082 A1 WO2020195082 A1 WO 2020195082A1
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WO
WIPO (PCT)
Prior art keywords
coil spring
wound coil
diagonally wound
terminal
contact surface
Prior art date
Application number
PCT/JP2020/002512
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English (en)
Japanese (ja)
Inventor
満 廣瀬
大輔 橋本
金　度亨
知聖 金
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
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Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2020195082A1 publication Critical patent/WO2020195082A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Definitions

  • the present disclosure relates to diagonally wound coil springs, connectors and electrical connection devices.
  • the planes of the terminals face each other, and the diagonally wound coil springs are interposed between the planes in a compressed state.
  • a connection structure for electrically conducting electricity between terminals is known (see, for example, Patent Documents 1 and 2).
  • the conventional diagonally wound coil spring is a coil spring in which a wire made of a conductive spring material is inclined with respect to the coil shaft and wound in a spiral shape, and the winding surface is formed in a circular shape. is there.
  • each terminal and the diagonally wound coil spring can be brought into contact with each other at multiple points. Therefore, as the number of contacts increases, the contact between each terminal and the diagonally wound coil spring The resistance can be lowered.
  • the contact resistance between each terminal and the diagonally wound coil spring is required to be further reduced.
  • the contact point with the terminal is a point contact. Therefore, in the conventional connection structure, the contact area at each contact between the diagonally wound coil spring and the terminal is small, and there is still room for improvement in this respect.
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide a diagonally wound coil spring, a connector and an electrical connection device capable of reducing the contact resistance between each terminal and the diagonally wound coil spring. To do.
  • the diagonally wound coil spring of the present disclosure has a structure in which a plurality of coils are continuously provided along the coil shaft in a state of being inclined with respect to the coil shaft, and has a first terminal having a flat first contact surface.
  • a diagonally wound coil spring provided between the second terminal having a flat second contact surface and in contact with the first contact surface and the second contact surface, and each coil is a diagonally wound coil spring.
  • the front view shape seen from the direction of the coil axis extending from the coil shaft is formed in a quadrangular shape, and each coil has a first side in contact with the first contact surface and a first side of the first side.
  • the upper end is connected to the end, and the second side extending in an inclined state with respect to the coil shaft and the first end are connected to the lower end of the second side and are brought into contact with the second contact surface. It has a third side and a fourth side having a lower end connected to the second end of the third side and extending in an inclined state with respect to the coil shaft, and the second side and the fourth side. Is formed so as to be inclined at the same angle with respect to the coil shaft, and the second side and the fourth side are formed to have the same length as each other.
  • the effect of reducing the contact resistance between each terminal can be obtained.
  • the electric connection device 10 shown in FIG. 1 is used, for example, as a connection portion in a wire harness for a high-voltage power supply of a vehicle such as an electric vehicle or a hybrid vehicle.
  • the electrical connection device 10 is used as a connection portion between a vehicle PCU (Power Control Unit) and a motor.
  • the electrical connection device 10 has a first connector 20 and a second connector 30 that are assembled to each other.
  • the assembling direction of the first connector 20 with respect to the second connector 30 is indicated by an arrow D.
  • the assembly direction indicated by the arrow D is referred to as an assembly direction D.
  • the assembly direction D indicates the relative assembly direction of the first connector 20 with respect to the second connector 30, and does not limit the second connector 30 as the fixed side, but is fixed.
  • the second connector 30 may be assembled toward the first connector 20 on the side.
  • the X-axis in the XYZ axes represents the front-rear direction of the electrical connection device 10
  • the Y-axis represents the width direction of the electrical connection device 10 orthogonal to the X-axis
  • the Z-axis is orthogonal to the XY plane.
  • the height direction of the electrical connection device 10 It represents the height direction of the electrical connection device 10.
  • the direction extending along the X axis is referred to as the front-back direction X
  • the direction extending along the Y axis is referred to as the width direction Y
  • the direction extending along the Z axis is referred to as the height direction Z.
  • the planes of the first contact surface 22A of the first terminal 21 of the first connector 20 and the second contact surface 32A of the second terminal 31 of the second connector 30 are arranged to face each other, and between the planes. It has a connection structure in which electrical conduction between the first terminal 21 and the second terminal 31 is achieved via a diagonally wound coil spring 40 provided in the above.
  • the second connector 30 has a second terminal 31 having conductivity and a housing 35 made of synthetic resin holding the second terminal 31.
  • the second terminal 31 has a plate shape. For example, one end of the second terminal 31 in the front-rear direction X is bent at a substantially right angle.
  • the second terminal 31 of the present embodiment has a contact portion 32 extending in the width direction Y and an extending portion 33 extending downward along the height direction Z from one end of the contact portion 32 in the front-rear direction X. There is.
  • the second terminal 31 of this embodiment is an L-shaped bus bar.
  • the second terminal 31 is, for example, a single component in which the contact portion 32 and the extension portion 33 are continuously and integrally formed.
  • a metal material such as copper-based or aluminum-based can be used.
  • the second terminal 31 can be formed by, for example, pressing a metal plate material.
  • the contact portion 32 is formed in a flat plate shape in which, for example, the dimensions in the width direction Y are set substantially equal over the entire length in the front-rear direction X.
  • the upper surface of the contact portion 32 is the second contact surface 32A with the first connector 20 side.
  • the second contact surface 32A is formed in a flat shape.
  • a connection hole 33X penetrating in the plate thickness direction here, the front-rear direction X
  • Connection hole 33X for example, a hole for connecting to another terminal (not shown).
  • the housing 35 is formed in a rectangular parallelepiped shape, for example.
  • a pedestal 36 formed so as to project upward in the height direction Z from the upper surface of the housing 35 is formed.
  • a contact portion 32 of the second terminal 31 is provided on the upper surface of the cradle 36.
  • the second terminal 31 is integrated with the housing 35.
  • the second terminal 31 is integrally attached to the housing 35 by insert molding or the like.
  • the contact portion 32 is placed on the pedestal 36, the extending portion 33 penetrates the housing 35 in the height direction Z, and the lower end portion of the extending portion 33 is the housing 35. It is integrally attached to the housing 35 in a form protruding downward from the lower surface of the housing 35.
  • the connection hole 33X is formed at the lower end of the extending portion 33 protruding from the lower surface of the housing 35.
  • the first connector 20 is made of a synthetic resin that holds the first terminal 21 having conductivity, the diagonally wound coil spring 40 arranged on the lower surface of the first terminal 21, the first terminal 21, and the diagonally wound coil spring 40. It has a housing 25 and.
  • the first terminal 21 has a plate shape. For example, one end of the first terminal 21 in the front-rear direction X is bent at a substantially right angle.
  • the first terminal 21 of the present embodiment has a contact portion 22 extending in the front-rear direction X and an extending portion 23 extending upward along the height direction Z from one end of the contact portion 22 in the front-rear direction X. There is.
  • the first terminal 21 of this embodiment is an L-shaped bus bar.
  • the first terminal 21 is, for example, a single component in which the contact portion 22 and the extension portion 23 are continuously and integrally formed.
  • a metal material such as copper-based or aluminum-based can be used.
  • the first terminal 21 can be formed by, for example, pressing a metal plate material.
  • the contact portion 22 is set so that the dimension in the front-rear direction X is longer than the dimension in the extension direction of the coil shaft A1 of the diagonally wound coil spring 40.
  • the contact portion 22 is formed in a flat plate shape in which the dimensions in the width direction Y are set to be substantially equal over the entire length in the front-rear direction X, for example.
  • the lower surface of the contact portion 22 is the first contact surface 22A with the second connector 30 side.
  • the first contact surface 22A is formed in a flat shape.
  • a connecting hole 23X penetrating in the plate thickness direction (here, the front-rear direction X) is formed.
  • the connection hole 23X is, for example, a hole for connecting to another terminal (not shown).
  • a locking hole 23Y penetrating in the plate thickness direction is formed in the central portion of the extending portion 23 in the length direction (here, the height direction Z).
  • the diagonally wound coil spring 40 is arranged below, for example, the first contact surface 22A of the first terminal 21.
  • the diagonally wound coil spring 40 has a coil shape in which a wire made of a conductive spring material is inclined with respect to the coil shaft (winding shaft) A1 and spirally wound a plurality of times.
  • one winding of the wire of the diagonally wound coil spring 40 may be referred to as a one-coil portion or simply referred to as one coil 50. Therefore, the diagonally wound coil spring 40 has a plurality of coils 50.
  • the diagonally wound coil spring 40 has a structure in which a plurality of coils 50 are continuously provided along the coil shaft A1 in a state of being inclined with respect to the coil shaft A1. In the diagonally wound coil spring 40, unlike a general coil spring, the winding surface of each coil 50 is oblique with respect to the coil shaft A1.
  • the winding surface of each coil 50 becomes the coil shaft A1.
  • the coil spring 40 is elastically deformed so that the dimension in the height direction Z of the diagonally wound coil spring 40 becomes smaller.
  • the spring characteristic of the diagonally wound coil spring 40 has a non-linear region in which the spring load does not change much even if the displacement amount in the height direction Z is changed.
  • the diagonally wound coil spring 40 is in a direction in which elastic deformation (compression) is possible, that is, in a direction orthogonal to the coil axis A1, and the first contact surface 22A and the second contact surface 32A.
  • the direction extending along the opposite direction is referred to as the height direction of the diagonally wound coil spring 40.
  • the height direction of the diagonally wound coil spring 40 coincides with the height direction Z of the electrical connection device 10. Therefore, in the following description, the height direction of the diagonally wound coil spring 40 is also simply referred to as "height direction Z".
  • each coil 50 As shown in FIG. 3, in the diagonally wound coil spring 40, the front view shape of each coil 50 viewed from the coil axis direction in which the coil shaft A1 extends is formed in a quadrangular shape. The detailed structure of each coil 50 will be described later.
  • the diagonally wound coil spring 40 is arranged so that its coil shaft A1 is substantially parallel to the first contact surface 22A.
  • the diagonally wound coil spring 40 of the present embodiment is arranged so that its coil shaft A1 extends along the front-rear direction X. Therefore, the coil shaft direction in which the coil shaft A1 of the diagonally wound coil spring 40 of the present embodiment extends coincides with the front-rear direction X.
  • Both ends 41 of the diagonally wound coil spring 40 are fixed to, for example, the first terminal 21.
  • Both ends 41 of the diagonally wound coil spring 40 extend in the front-rear direction X from, for example, the ends of the wires constituting the coil 50 of the diagonally wound coil spring 40, and reach the first contact surface 22A of the first terminal 21.
  • both end portions 41 are fixed to the first contact surface 22A of the first terminal 21 by welding, for example.
  • both ends 41 have, for example, a redundant portion such that the tensile force by the portion fixed to the first terminal 21 does not act when the diagonally wound coil spring 40 is deformed, and the first terminal 21 has a first position. 1 It is fixed to the contact surface 22A.
  • the material of the diagonally wound coil spring 40 for example, copper, a copper alloy or a nickel alloy can be used.
  • the copper alloy for example, beryllium copper, zirconium copper, phosphor bronze and the like can be used.
  • the diagonally wound coil spring 40 one having a plating layer formed on the surface of a base material made of a material having excellent spring properties (for example, stainless steel) can also be used.
  • the material of the plating layer copper, silver, gold, nickel, titanium and the like can be used.
  • the housing 25 has, for example, an upper divided body 25A and a lower divided body 25B divided into upper and lower parts.
  • the housing 25 is configured by combining the upper split body 25A and the lower split body 25B.
  • the upper split body 25A is formed, for example, in an L-shaped block shape in a cross-sectional view.
  • the upper split body 25A of the present embodiment has a protruding portion 26 formed at the right end portion in the drawing so as to project upward along the height direction Z.
  • a mounting groove 25X on which the contact portion 22 of the first terminal 21 is mounted is formed in the central portion of the lower surface of the upper split body 25A.
  • a lead-out portion 25Y for leading the extension portion 23 of the first terminal 21 to the outside of the housing 25 is provided.
  • the lead-out portion 25Y is formed so as to penetrate the protruding portion 26 in the height direction Z.
  • An extension portion 23 of the first terminal 21 is inserted inside the lead-out portion 25Y.
  • the connection hole 23X of the extending portion 23 is formed at the upper end portion of the extending portion 23 protruding upward from the upper surface of the protruding portion 26.
  • a lance 27 is provided inside the lead-out unit 25Y, for example. The lance 27 fits into the locking hole 23Y of the extending portion 23 and locks the lance 27, thereby locking the extending portion 23 to the upper split body 25A. As a result, the first terminal 21 is held by the upper split body 25A.
  • the lower split body 25B is formed with an opening 25Z that allows the entry of the second terminal 31 of the second connector 30.
  • the opening 25Z is formed, for example, in a size that allows the pedestal 36 of the second connector 30 and the second terminal 31 mounted on the pedestal 36 to enter.
  • the opening 25Z is provided, for example, at a position where the diagonally wound coil spring 40 of the first terminal 21 is arranged.
  • the dimension of the opening 25Z in the front-rear direction X is set to be substantially the same as the dimension of the front-rear direction X excluding both ends 41 of the diagonally wound coil spring 40, for example.
  • the opening 25Z is formed so that the diagonally wound coil spring 40 can be exposed downward.
  • a mounting surface 28 on which both ends of the contact portion 22 of the first terminal 21 in the front-rear direction X is mounted is formed.
  • the mounting surface 28 is provided before and after the opening 25Z in the front-rear direction X, for example.
  • the mounting surface 28 fixes the contact portion 22 by sandwiching the contact portion 22 with the upper split body 25A.
  • the pedestal 36 of the housing 35 and the second terminal 31 mounted on the pedestal 36 are open to the housing 25. It has entered the section 25Z.
  • the first terminal 21 and the second terminal 31 are in a state in which the flat first contact surface 22A and the flat second contact surface 32A are parallel to each other and face each other in the height direction Z.
  • the first contact surface 22A and the second contact surface 32A are provided so as to approach each other.
  • the diagonally wound coil spring 40 is elastically deformed (compressed) in the height direction Z between the first contact surface 22A of the first terminal 21 and the second contact surface 32A of the second terminal 31. It is designed to be intervened.
  • the diagonally wound coil spring 40 is in contact with both the first contact surface 22A of the first terminal 21 and the second contact surface 32A of the second terminal 31.
  • electrical conduction between the first terminal 21 and the second terminal 31 can be achieved through the diagonally wound coil spring 40.
  • the first terminal 21 and the second terminal 31 come into contact with the diagonally wound coil spring 40 at multiple points, so that a large number of contacts can be secured, and the diagonally wound coil spring 40 and the first terminal 21 and The contact resistance with the second terminal 31 can be lowered.
  • the diagonally wound coil spring 40 becomes smaller as the distance between the first terminal 21 and the second terminal 31 in the height direction Z (that is, the facing distance) becomes narrower.
  • the winding surface of each coil 50 is further tilted with respect to the coil shaft A1 and its inclination angle becomes tight.
  • so-called wiping is performed in which a large number of contacts of the diagonally wound coil spring 40 move in the coil axial direction.
  • foreign matter is removed between the diagonally wound coil spring 40 and the first terminal 21 and the second terminal 31.
  • FIG. 5 shows a widened pitch of adjacent coils 50 in order to make it easy to understand how to wind each coil 50 of the diagonally wound coil spring 40.
  • the diagonally wound coil spring 40 is formed by inclining a conductive wire rod with respect to the coil shaft A1 and winding it a plurality of times in a spiral shape, and the coil as a whole is formed. It is formed in a straight line along the axis A1.
  • the diagonally wound coil spring 40 is configured such that a plurality of coils 50 are continuously provided along the coil shaft A1 in a state of being inclined with respect to the coil shaft A1.
  • the width direction of the diagonally wound coil spring 40 coincides with the width direction Y of the electrical connection device 10. Therefore, in the following description, the width direction of the diagonally wound coil spring 40 is also simply referred to as "width direction Y". Further, in the following description, for convenience, the right side in the figure in the front-rear direction X is referred to as the front side, and the left side in the figure in the front-rear direction X is referred to as the rear side.
  • Each coil 50 has a quadrangular front view shape when viewed from the coil axis direction.
  • Each coil 50 has four sides forming a quadrangle, that is, a first side 51, a second side 52, a third side 53, and a fourth side 54, and the first side 51, the second side 52, and the fourth side thereof.
  • the three sides 53 and the fourth side 54 are continuously connected to each other.
  • the first end of the first side 51 is connected to the upper end of the second side 52
  • the lower end of the second side 52 is connected to the first end of the third side 53
  • the second end of 53 is connected to the lower end of the fourth side 54.
  • the upper end of the fourth side 54 is connected to the second end of the first side 51 of the adjacent coils 50.
  • the upper end portion of the second side 52 and the upper end portion of the fourth side 54 are provided at the same position in the height direction Z, and the lower end portion of the second side 52 and the fourth side 54 are provided. Is provided at the same position as the lower end portion of the above in the height direction Z.
  • the upper end portion of the second side 52 and the upper end portion of the fourth side 54 are formed on one plane (here, the XY plane) parallel to the first contact surface 22A (see FIG. 1).
  • the lower end of the second side 52 and the lower end of the fourth side 54 are formed on one plane (here, the XY plane) parallel to the first contact surface 22A.
  • the first end portion of the first side 51 and the first end portion of the third side 53 are provided at the same position in the width direction Y, and are provided with the second end portion of the first side 51.
  • the second end of the third side 53 is provided at the same position in the width direction Y.
  • the first end of the first side 51 and the first end of the third side 53 are formed on one plane (here, the XZ plane) orthogonal to the first contact surface 22A (see FIG. 1).
  • the third end of the first side 51 and the third end of the third side 53 are formed on one plane (here, the XZ plane) orthogonal to the first contact surface 22A (see FIG. 1).
  • the first side 51 is formed so as to extend along the first direction D1.
  • the first side 51 is formed so as to extend along the first direction D1 on an XY plane parallel to the first contact surface 22A (see FIG. 1), for example.
  • the first side 51 is formed so as to extend parallel to, for example, the first contact surface 22A (see FIG. 1).
  • the first side 51 is formed so as to extend linearly along the first direction D1, for example.
  • the first side 51 is, for example, a contact side to which the first contact surface 22A of the first terminal 21 shown in FIG. 1 is contacted.
  • the first side 51 is tilted at a predetermined inclination angle ⁇ 1 with respect to the orthogonal axis A2 orthogonal to the coil axis A1 in a plan view, and is second from the upper end portion of the fourth side 54. It is formed so as to extend toward the upper end of the side 52.
  • the first side 51 is X in the front-rear direction from the second end connected to the upper end of the fourth side 54 toward the first end connected to the upper end of the second side 52. It is formed so as to go to the front side of.
  • the first side 51 is inclined so as to proceed from the front side in the width direction Y (lower side in the figure) to the back side in the width direction Y (upper side in the figure) toward the front side in the front-rear direction X. It is formed. Therefore, the first end portion of the first side 51 (that is, the back end portion in the width direction Y) is front and rear of the second end portion of the first side 51 (that is, the front end portion in the width direction Y). It is located in front of the direction X.
  • the inclination angle ⁇ 1 of the first side 51 is an acute angle in the angle formed by the first direction D1 on which the first side 51 extends and the orthogonal axis A2 in a plan view (in the XY plane).
  • the first direction D1 is a direction that extends at an inclination angle ⁇ 1 that is less than 90 degrees with respect to the orthogonal axis A2 in the XY plane.
  • the second side 52 is formed so as to descend from the first end portion of the first side 51 along the second direction D2.
  • the second side 52 is formed so as to extend along the second direction D2 on the XZ plane orthogonal to the XY plane, for example.
  • the second side 52 is formed so as to extend along the second direction D2 between the first contact surface 22A of the first terminal 21 and the second contact surface 32A of the second terminal 31 shown in FIG. 1, for example. ing.
  • the second side 52 is formed so as to extend linearly along the second direction D2, for example.
  • the second side 52 is formed so as to fall from the first end portion of the first side 51 in a state of being inclined at a predetermined inclination angle ⁇ 2 with respect to the coil shaft A1 in the side view. ing.
  • the second side 52 is formed so as to be inclined toward the rear side of the front-rear direction X from the upper end portion connected to the first side 51 to the lower end portion, for example. Therefore, the lower end portion of the second side 52 is located behind the upper end portion of the second side 52 in the front-rear direction X.
  • the inclination angle ⁇ 2 of the second side 52 is an acute angle in the angle formed by the second direction D2 in which the second side 52 extends and the coil shaft A1 in the side view (in the XZ plane).
  • the second direction D2 is a direction that extends at an inclination angle ⁇ 2 that is less than 90 degrees with respect to the coil axis A1 in the XZ plane.
  • the third side 53 is formed so as to extend from the lower end of the second side 52 along the third direction D3.
  • the third side 53 is formed so as to extend in the third direction D3 on an XY plane parallel to the first contact surface 22A (see FIG. 1), for example.
  • the third side 53 is formed so as to extend parallel to, for example, the first contact surface 22A (see FIG. 1).
  • the third side 53 is formed so as to extend linearly along the third direction D3, for example.
  • the third side 53 is, for example, a contact side that is in contact with the second contact surface 32A of the second terminal 31 shown in FIG.
  • the third side 53 is inclined from the lower end of the second side 52 to the upper end of the fourth side 54 in a state of being inclined at a predetermined inclination angle ⁇ 3 with respect to the orthogonal axis A2 in a plan view. It is formed so as to extend toward it.
  • the third side 53 is X in the front-rear direction as it goes from the first end connected to the lower end of the second side 52 to the second end connected to the lower end of the fourth side 54. It is formed so as to go to the front side of.
  • the third side 53 is formed so as to proceed from the back side in the width direction Y (upper side in the figure) toward the front side in the width direction Y (lower side in the figure) toward the front side in the front-rear direction X. ing. That is, the third side 53 is formed so as to extend in a direction intersecting the first side 51 in a plan view. At this time, the second end portion of the third side 53 (that is, the front end portion in the width direction Y) is X in the front-rear direction X than the first end portion (back end portion in the width direction Y) of the third side 53. It is located on the front side of.
  • the inclination angle ⁇ 3 of the third side 53 is an acute angle in the angle formed by the third direction D3 on which the third side 53 extends and the orthogonal axis A2 in a plan view (in the XY plane).
  • the third direction D3 is a direction that extends at an inclination angle ⁇ 3 that is less than 90 degrees with respect to the orthogonal axis A2 in the XY plane.
  • the fourth side 54 is formed so as to rise from the second end of the third side 53 along the fourth direction D4.
  • the fourth side 54 is formed so as to extend along the fourth direction D4 on the XZ plane orthogonal to the XY plane, for example.
  • the fourth side 54 is formed so as to extend along the fourth direction D4 between the first contact surface 22A of the first terminal 21 and the second contact surface 32A of the second terminal 31 shown in FIG. 1, for example. ing.
  • the fourth side 54 is formed so as to extend linearly along the fourth direction D4, for example.
  • the fourth side 54 is formed so as to rise from the second end portion of the third side 53 in a state of being inclined at a predetermined inclination angle ⁇ 4 with respect to the coil shaft A1 in the side view.
  • the fourth side 54 is formed so as to advance toward the front side in the front-rear direction X from the lower end portion connected to the third side 53 toward the upper end portion, for example. Therefore, the upper end portion of the fourth side 54 is located on the front side in the front-rear direction X with respect to the lower end portion of the fourth side 54.
  • the upper end of the fourth side 54 is connected to the second end of the first side 51 of the adjacent coils 50.
  • the upper end portion of the fourth side 54 is connected to the second end portion of the first side 51 of the adjacent coils 50 on the front side in the front-rear direction X.
  • the inclination angle ⁇ 4 of the fourth side 54 is an acute angle in the angle formed by the fourth direction D4 on which the fourth side 54 extends and the coil shaft A1 in the side view (in the XZ plane).
  • the fourth direction D4 is a direction that extends at an inclination angle ⁇ 4, which is less than 90 degrees with respect to the coil axis A1, in the XZ plane.
  • the height direction of the diagonally wound coil spring 40 (here, the height direction Z) is a direction orthogonal to the coil axis A1 and orthogonal to the extending direction of the first side 51 and the third side 53. It can be said that.
  • the inclination angle ⁇ 2 of the second side 52 and the inclination angle ⁇ 4 of the fourth side 54 are set to be the same angle. That is, the second side 52 and the fourth side 54 are formed so as to be inclined at the same angle with respect to the coil shaft A1. Therefore, the second side 52 and the fourth side 54 are formed so as to extend in parallel with each other when the diagonally wound coil spring 40 is viewed from the side in the width direction Y. Further, the length of the second side 52 and the length of the fourth side 54 are set to be the same length as each other. Specifically, the length from the lower end to the upper end of the second side 52 and the length from the lower end to the upper end of the fourth side 54 are set to be the same length.
  • the same angle with each other includes the case where the angle is slightly deviated due to manufacturing variation and the like.
  • the same length as each other includes a case where the length is slightly deviated due to manufacturing variation.
  • the diagonally wound coil spring 40 of the present embodiment is formed so that the first side 51 and the third side 53 extend in a direction intersecting each other in a plan view viewed from the height direction Z. ing. That is, the first direction D1 and the third direction D3 are set to intersect each other in a plan view. Further, in the diagonally wound coil spring 40, when the orthogonal axis A2 passing through the midpoint of the second side 52 is set as the center line C1, the first side 51 and the third side 53 are centered on the center line C1 in a plan view. It is formed so as to have a line-symmetrical shape.
  • the first side 51 and the third side 53 are formed so as to extend in parallel with the orthogonal axis A2 and have a line-symmetrical shape about the center line C1 passing through the midpoint of the second side 52 in a plan view.
  • the inclination angle ⁇ 1 of the first side 51 and the inclination angle ⁇ 3 of the third side 53 are set to the same angle.
  • the length of the first side 51 and the length of the third side 53 are set to be the same.
  • the “line-symmetrical shape” includes a case where the shape is not slightly line-symmetrical due to manufacturing variations and the like.
  • both ends 41 of the diagonally wound coil spring 40 are fixed to the first terminal 21 by welding or the like in the first connector 20. Has been done.
  • the diagonally wound coil spring 40 is held at the first terminal 21 in a posture in which the coil shaft A1 is substantially parallel to the first contact surface 22A of the contact portion 22 of the first terminal 21. Further, the first terminal 21 is housed in the housing 25.
  • the lance 27 is locked in the locking hole 23Y of the extending portion 23 of the first terminal 21, and both ends of the contact portion 22 in the front-rear direction X are vertically divided into the mounting surface 28 of the lower division body 25B.
  • the first terminal 21 is fixed in the housing 25 by being sandwiched between the body 25A and the body 25A.
  • the first connector 20 and the second connector 30 are placed relatively close to each other and placed on the pedestal 36 of the housing 35 and the pedestal 36 thereof.
  • the placed second terminal 31 is made to enter the opening 25Z of the housing 25.
  • the first contact surface 22A of the contact portion 22 of the first terminal 21 is formed on the outer peripheral portion of the diagonally wound coil spring 40, specifically, the first side 51 of the diagonally wound coil spring 40 (see FIGS. 4 to 7). Make contact with the bottom surface.
  • the diagonally wound coil spring 40 Is applied to the diagonally wound coil spring 40.
  • a load compressive load
  • the diagonally wound coil spring 40 is elastically deformed so as to further collapse the winding surface with respect to the coil shaft A1 against the elastic force of the diagonally wound coil spring 40.
  • the diagonally wound coil spring 40 is interposed between the first contact surface 22A and the second contact surface 32A in a state of being compressed in the height direction Z.
  • the inclination angle ⁇ 2 of the second side 52 of each coil 50 and the inclination angle ⁇ 4 of the fourth side 54 are set to the same angle, and the second The side 52 and the fourth side 54 are set to have the same length.
  • the diagonally wound coil spring 70 of the comparative example has a quadrangular winding surface, but the winding method is different from that of the diagonally wound coil spring 40 of the present embodiment.
  • the diagonally wound coil spring 70 of the comparative example has, for example, a winding method similar to that of a conventional diagonally wound coil spring having a circular winding surface.
  • the structure of the diagonally wound coil spring 70 will be described below, focusing on the differences from the diagonally wound coil spring 40.
  • the diagonally wound coil spring 70 is formed by inclining a conductive wire rod with respect to the coil shaft A3 and winding it a plurality of times in a spiral shape, and is formed around the coil shaft A3 as a whole. It is formed in a straight line along the line.
  • the diagonally wound coil spring 70 is configured such that a plurality of coils 80 are continuously provided along the coil shaft A3 in a state of being inclined with respect to the coil shaft A3.
  • Each coil 80 has a quadrangular front view shape when viewed from the direction of the coil axis on which the coil axis A3 extends.
  • Each coil 80 has four sides forming a quadrangle, that is, a first side 81, a second side 82, a third side 83, and a fourth side 84, and the first side 81, the second side 82, and the second side thereof.
  • the three sides 83 and the fourth side 84 are continuously connected to each other.
  • the first end of the first side 81 is connected to the upper end of the second side 82
  • the lower end of the second side 82 is connected to the first end of the third side 83
  • the second end of the 83 is connected to the lower end of the fourth side 84.
  • the upper end portion of the fourth side 84 is connected to the second end portion of the first side 81 of the adjacent coils 80.
  • each coil 80 the upper end portion of the second side 82 and the upper end portion of the fourth side 84 are provided at the same position in the height direction Z, and the lower end portion of the second side 82 and the fourth side 84 are provided. Is provided at the same position as the lower end portion of the above in the height direction Z. Further, in each coil 80, the first end portion of the first side 81 and the first end portion of the third side 83 are provided at the same positions in the width direction Y, and are provided with the second end portion of the first side 81. The second end of the third side 83 is provided at the same position in the width direction Y.
  • the first side 81 is formed so as to extend parallel to the orthogonal axis A4 orthogonal to the coil axis A3 in a plan view of the diagonally wound coil spring 70 viewed from the height direction Z.
  • the third side 83 is formed so as to extend parallel to the orthogonal axis A4 in a plan view. Therefore, the diagonally wound coil spring 70 is formed so that the first side 81 and the third side 83 extend in parallel in a plan view.
  • the second side 82 is tilted at a predetermined inclination angle ⁇ 12 with respect to the coil shaft A3 in a side view of the diagonally wound coil spring 70 viewed from the width direction Y, and the first side 81 is It is formed so as to fall from the first end of the.
  • the second side 82 is formed so as to be inclined toward the rear side of the front-rear direction X from the upper end portion connected to the first side 81 to the lower end portion, for example.
  • the fourth side 84 is formed so as to rise from the second end portion of the third side 83 in a state of being inclined with respect to the coil shaft A3 at a predetermined inclination angle ⁇ 14.
  • the fourth side 84 is formed so as to proceed toward the front side in the front-rear direction X from the lower end portion connected to the third side 83 toward the upper end portion, for example.
  • the inclination angle ⁇ 12 of the second side 82 and the inclination angle ⁇ 14 of the fourth side 84 are set to different angles. Specifically, the inclination angle ⁇ 12 of the second side 82 is formed to be larger than the inclination angle ⁇ 14 of the fourth side 84. Further, in the diagonally wound coil spring 70, the length of the second side 82 and the length of the fourth side 84 are set to be different lengths. Specifically, the length of the second side 82 is set shorter than the length of the fourth side 84.
  • the strength (compressive strength) of the diagonally wound coil spring 70 with respect to the compressive load in the height direction Z differs between the second side 82 and the fourth side 84.
  • the strength against the compressive load in the height direction Z on the second side 82 is larger than the strength against the compressive load in the height direction Z on the fourth side 84. Due to such a difference in strength, the diagonally wound coil spring 70 of the comparative example tends to be twisted (twisted) when a compressive load is applied from the height direction Z. That is, as shown in FIG.
  • the diagonally wound coil spring 70 when the diagonally wound coil spring 70 is compressed in the height direction Z between the first contact surface 22A and the second contact surface 32A, the contact point between the first contact surface 22A and the first side 81 is formed. Point contact occurs, and the point of contact between the second contact surface 32A and the third side 83 becomes point contact. That is, in the connection structure using the diagonally wound coil spring 70 of the comparative example, the diagonally wound coil spring 70 and the first are the same as the connection structure using the conventional diagonally wound coil spring having the winding surface formed in a circular shape. The contact area at each contact point with the terminal 21 and the second terminal 31 becomes small.
  • the second side 52 and the fourth side 54 are formed so as to be inclined with respect to the coil shaft A1 at the same angle.
  • the second side 52 and the fourth side 54 are set to have the same length.
  • the strength difference between the strength against the compression load in the height direction Z on the second side 52 and the strength against the compression load in the height direction Z on the fourth side 54 is smaller than that of the diagonally wound coil spring 70 of the comparative example. can do. Therefore, in the diagonally wound coil spring 40 of the present embodiment, it is possible to prevent twisting (twisting) of each coil 50 when a compressive load is applied from the height direction Z. That is, as shown in FIG.
  • the first when a compressive load is applied from the height direction Z in a state of being interposed between the first contact surface 22A and the second contact surface 32A, the first It is possible to suppress the occurrence of inclination or distortion in a square shape having a front view shape between the contact surface 22A and the second contact surface 32A.
  • the first side 51 and the third side 53 can be maintained in a state of being parallel to the first contact surface 22A and the second contact surface 32A. Therefore, when the diagonally wound coil spring 40 is compressed in the height direction Z between the first contact surface 22A and the second contact surface 32A, the first contact surface 22A and the first side 51 are in line contact with each other.
  • the second contact surface 32A and the third side 53 can be brought into line contact with each other.
  • the second side 52 and the fourth side 54 extending in the height direction Z are formed so as to be inclined at the same angle with respect to the coil axis A1.
  • the side 52 and the fourth side 54 are set to have the same length.
  • the second contact surface 32A and the third side 53 can be brought into line contact with each other. Therefore, in the connection structure using the diagonally wound coil spring 40, the first contact surface 22A and the second contact surface 32A are compared with the connection structure using the diagonally wound coil spring 70 of the comparative example and the conventional diagonally wound coil spring. The contact area of the can be increased. As a result, the contact resistance between the diagonally wound coil spring 40 and the first terminal 21 and the second terminal 31 can be suitably reduced.
  • Each coil 50 is formed so that the first side 51 and the third side 53 extend in a direction intersecting each other in a plan view viewed from the height direction Z. According to such a structure, the symmetry of the coil 50 is improved as compared with the diagonally wound coil spring 70 of the comparative example in which the first side 81 and the third side 83 are formed so as to extend in parallel in a plan view. be able to. Therefore, when a compressive load is applied to the diagonally wound coil spring 40 from the height direction Z, it is possible to suitably suppress the occurrence of twisting in each coil 50.
  • each coil 50 when the orthogonal axis A2 passing through the midpoint of the second side 52 is set as the center line C1 in the plan view viewed from the height direction Z, the first side 51 and the third side 53 was formed so as to have a line-symmetrical shape with the center line C1 as the center. Thereby, the symmetry in the coil 50 can be further improved. Therefore, when a compressive load is applied to the diagonally wound coil spring 40 from the height direction Z, it is possible to more preferably suppress twisting of each coil 50.
  • the first side 51 in contact with the first contact surface 22A may be formed in a curved surface shape.
  • the first side 51 may be formed in a curved surface shape that protrudes upward, that is, toward the first contact surface 22A.
  • the first side 51 may be formed so as to have a predetermined radius of curvature in the width direction Y, and may be formed in an arc shape in a front view.
  • the third side 53 in contact with the second contact surface 32A may be formed in a curved surface shape.
  • the third side 53 may be formed in a curved surface shape that protrudes downward, that is, toward the second contact surface 32A.
  • the third side 53 may be formed so as to have a predetermined radius of curvature in the width direction Y, and may be formed in an arc shape in a front view.
  • both ends 41 of the diagonally wound coil spring 40 are fixed to the first terminal 21 by welding, but may be fixed to the first terminal 21 by another method such as soldering.
  • the diagonally wound coil spring 40 is fixed to the first terminal 21, but the diagonally wound coil spring 40 may be fixed to the housing 25.
  • the diagonally wound coil spring 40 is arranged so that the coil shaft A1 extends in the front-rear direction X of the electrical connection device 10, but the arrangement posture is not particularly limited.
  • the diagonally wound coil spring 40 may be arranged so that the coil shaft A1 extends in the width direction Y of the electrical connection device 10.
  • the structure of the first connector 20 in the above embodiment is not particularly limited.
  • the first terminal 21 is formed in an L shape, but the shape of the first terminal 21 is not particularly limited.
  • the extending portion 23 may be omitted, and the first terminal 21 may be changed to a shape extending linearly.
  • the housing 25 is configured to combine the upper split body 25A and the lower split body 25B, but the structure of the housing 25 is not particularly limited.
  • the structure of the housing 25 is not particularly limited as long as it has a structure capable of holding the first terminal 21 and the diagonally wound coil spring 40.
  • the housing 25 may be composed of a single component.
  • the structure of the second connector 30 in the above embodiment is not particularly limited.
  • the second terminal 31 is formed in an L shape, but the shape of the second terminal 31 is not particularly limited.
  • the extending portion 33 may be omitted, and the second terminal 31 may be changed to a shape extending linearly.
  • the structure of the housing 35 is not particularly limited as long as it has a structure capable of holding the second terminal 31.
  • the shape of the cradle 36 may be changed as appropriate.
  • the diagonally wound coil spring (40) includes both end portions (41) and non-end portions excluding the both end portions (41), and the diagonally wound coil spring (40). Both ends (41) of the first connector (20) may be immovably fixed to the first contact surface (22A) of the first terminal (21) of the first connector (20).
  • the diagonally wound coil spring (40) has a plurality of quadrangular winding surfaces, and each quadrangular winding surface has three continuous sides (second side (second side (second side)). 52), the first side (51), the fourth side (54)), and the lower end of the second side (52) not connected by the winding and the lower end of the fourth side (54) are connected. It may be partitioned by one linear virtual line segment that is space.
  • the diagonally wound coil spring (40) is the first contact surface (22A) of the first terminal (21) of the first connector (20) and the second connector (30).
  • the distance between the lower end of the second side (52) and the lower end of the fourth side (54), which is the length of the above, may be the first distance.
  • the diagonally wound coil spring (40) is the first contact surface (22A) of the first terminal (21) of the first connector (20) and the second connector (30).
  • the diagonally wound coil spring (40) is in a deformed state pressed by the second contact surface (32A) of the two terminals (31) in the radial direction, the linear virtual line segment constituting each quadrangular winding surface.
  • the distance between the lower end of the second side (52) and the lower end of the fourth side (54), which is the length, may be a second distance different from the first distance.
  • the second side (52) and the fourth side (54) of each coil (50) are both. It may be tilted at a first angle with respect to the coil shaft (A1), and when the diagonally wound coil spring (40) is in the deformed state, the second side (52) and the fourth side (54) of each coil (50) ) May be tilted with respect to the coil shaft (A1) at a second angle different from the first angle.
  • the inclination angles of the second side (52) and the fourth side (54) of each coil (50) with respect to the coil shaft (A1) may change from the first angle to the second angle.
  • the first side (51) of each coil (50) of the diagonally wound coil spring (40) slides along the first contact surface (22A) of the first terminal (21) of the first connector (20). Line contact with the first contact surface (22A) may be maintained,
  • the third side (53) of each coil (50) of the diagonally wound coil spring (40) slides along the second contact surface (32A) of the second terminal (31) of the second connector (30). Line contact with the second contact surface (32A) may be maintained.
  • the distance between the lower end of the second side (52) and the lower end of the fourth side (54), which is the length of the linear virtual line segment constituting each quadrangular winding surface, is the first distance. May change from to the second distance.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

Dans la présente invention, pour chaque bobine 50 d'un ressort hélicoïdal enroulé en diagonale 40, la forme de vue avant, vue depuis la direction axiale de la bobine dans laquelle s'étend un axe de bobine A1, est formée sous une forme rectangulaire. Chaque bobine 50 comporte : un premier côté 51 ; un deuxième côté 52 dont la partie d'extrémité supérieure est reliée à une première partie d'extrémité du premier côté 51, le deuxième côté 52 s'étendant dans un état incliné par rapport à l'axe de bobine A1 ; un troisième côté 53, dont une première partie d'extrémité est reliée à la partie d'extrémité inférieure du deuxième côté 52 ; et un quatrième côté 54, dont une partie d'extrémité inférieure est reliée à une seconde partie d'extrémité du troisième côté 53, le quatrième côté 54 s'étendant dans un état incliné par rapport à l'axe de bobine A1. Le deuxième côté 52 et le quatrième côté 54 sont formés de manière inclinée selon le même angle par rapport à l'axe de bobine A1, et le deuxième côté 52 et le quatrième côté 54 sont formés ayant la même longueur.
PCT/JP2020/002512 2019-03-27 2020-01-24 Ressort hélicoïdal enroulé en diagonale, connecteur et dispositif de connexion électrique WO2020195082A1 (fr)

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JP2019060726A JP2020161374A (ja) 2019-03-27 2019-03-27 斜め巻きコイルばね、コネクタ及び電気接続装置
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EP4258293A4 (fr) * 2020-12-04 2024-05-01 Furukawa Electric Co., Ltd. Borne femelle, connecteur, barre omnibus, fil électrique avec borne, fil électrique avec connecteur, et faisceau de câbles

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439671A1 (de) * 1994-11-07 1996-05-09 Abb Management Ag Kontaktfeder für eine Kontaktanordnung mit zwei Koaxialleitern und Kontaktanordnung mit einer solchen Kontaktfeder
JP2012248495A (ja) * 2011-05-31 2012-12-13 Sumitomo Electric Ind Ltd 斜め巻きばね及び斜め巻きばね用線材

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439671A1 (de) * 1994-11-07 1996-05-09 Abb Management Ag Kontaktfeder für eine Kontaktanordnung mit zwei Koaxialleitern und Kontaktanordnung mit einer solchen Kontaktfeder
JP2012248495A (ja) * 2011-05-31 2012-12-13 Sumitomo Electric Ind Ltd 斜め巻きばね及び斜め巻きばね用線材

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