WO2020054390A1 - Borne de connexion et connecteur - Google Patents

Borne de connexion et connecteur Download PDF

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Publication number
WO2020054390A1
WO2020054390A1 PCT/JP2019/033401 JP2019033401W WO2020054390A1 WO 2020054390 A1 WO2020054390 A1 WO 2020054390A1 JP 2019033401 W JP2019033401 W JP 2019033401W WO 2020054390 A1 WO2020054390 A1 WO 2020054390A1
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WIPO (PCT)
Prior art keywords
contact
terminal
connection terminal
connection
curvature
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PCT/JP2019/033401
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English (en)
Japanese (ja)
Inventor
清水　徹
トマ クルブレ
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 WO2020054390A1 publication Critical patent/WO2020054390A1/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
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • 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

Definitions

  • the present invention relates to a connection terminal and a connector.
  • connection terminal for a large current used in electric vehicles and the like, a multi-contact type connection in which a male terminal and a female terminal are brought into contact with a large number of contacts to reduce the contact resistance and reduce the heat generation amount.
  • the structure is known (for example, refer to Patent Document 1).
  • a cylindrical contact spring is mounted in a cylindrical female terminal, and the cylindrical contact spring has a rod shape with a circular cross section. It is known to insert a male terminal of a round pin.
  • the contact spring has, for example, a structure in which a plurality of spring pieces extending in the axial direction and projecting inward in the radial direction are arranged side by side in the circumferential direction.
  • a plurality of spring pieces of the contact spring are brought into contact with the outer peripheral surface of the male terminal of the round pin.
  • the male terminal and the female terminal come in contact with a large number of contacts, and the contact resistance between the male terminal and the female terminal can be reduced.
  • Patent Documents 2 and 3 are also known as prior arts related to the above-described conventional art.
  • the multi-contact type connection terminal has a problem that the manufacturing cost is high because the male terminal as a round pin and the female terminal in a cylindrical shape are formed by cutting.
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide a connection terminal and a connector that can suppress an increase in contact resistance while suppressing an increase in manufacturing cost.
  • connection terminal for solving the above problems, a flat terminal connection portion electrically connected to a mating terminal having a flat contact surface, and a wire connection portion electrically connected to the wire,
  • the terminal connecting portion has a contact portion formed in a state of being connected to the mating terminal and bulging toward the contact surface of the mating terminal in a curved shape, and having a radius of curvature of the contact portion.
  • R satisfies the following equation 1.
  • connection terminal and the connector of the present invention it is possible to suppress an increase in contact resistance while suppressing an increase in manufacturing cost.
  • FIG. 2 is an exploded perspective view showing the connector of the first embodiment.
  • FIG. 3 is a side view showing the connection terminal of the first embodiment.
  • FIG. 2 is a front view showing a connection terminal according to the first embodiment.
  • FIG. 2 is a schematic perspective view showing the connector of the first embodiment.
  • FIG. 2 is a schematic sectional view showing the connector of the first embodiment.
  • (A)-(c) are graphs showing the results of experiments and data verification.
  • FIG. 9 is an exploded perspective view showing the connector of the second embodiment.
  • FIG. 6 is a schematic cross-sectional view illustrating a connector according to a second embodiment.
  • FIG. 9 is an exploded perspective view showing a connector according to a modified example.
  • the connector 10 shown in FIG. 1 is provided at one end of both ends of a wire harness that electrically connects a battery mounted on a vehicle such as a hybrid vehicle or an electric vehicle to an inverter or a motor, for example.
  • the connector 10 includes the connection terminal 20, the spring portion 30, the retainer 40, and the electric wire 50 connected to the connection terminal 20.
  • a mating terminal (that is, a mating connection terminal) 60 is inserted into the connector 10.
  • the partner terminal 60 is a flat connection terminal.
  • a metal material such as copper (Cu), a copper alloy, aluminum (Al), an aluminum alloy, and stainless steel (SUS) can be used.
  • the mating terminal 60 may be subjected to a surface treatment such as silver (Ag) plating, tin (Sn) plating, or aluminum plating, depending on the type of the constituent metal and the use environment.
  • the partner terminal 60 can be formed, for example, by pressing a metal plate having excellent conductivity.
  • the mating terminal 60 has a contact surface 61 that is in contact with the connection terminal 20 on a surface facing the connection terminal 20 when inserted into the connector 10.
  • the contact surface 61 is formed as a flat surface.
  • the mating terminal 60 is electrically connected to the connection terminal 20 when inserted into the connector 10.
  • the connection terminal 20 has a terminal connection part 21 connected to the partner terminal 60 and an electric wire connection part 22 connected to the electric wire 50.
  • the connection terminal 20 is, for example, a single component in which a terminal connection portion 21 and an electric wire connection portion 22 are connected in the axial direction and integrally formed.
  • a material of the connection terminal 20 for example, a metal material such as copper, a copper alloy, aluminum, an aluminum alloy, and stainless steel can be used.
  • the connection terminal 20 may be subjected to a surface treatment such as silver plating, tin plating, or aluminum plating according to the type of the constituent metal and the use environment.
  • the connection terminal 20 can be formed, for example, by pressing a metal plate having excellent conductivity.
  • the terminal connection part 21 is a terminal having a flat plate shape.
  • the terminal connecting portion 21 has a contact portion 23 that is formed to bulge out toward the mating terminal 60 in a curved shape when connected to the mating terminal 60. That is, the contact portion 23 is provided on the surface 21 ⁇ / b> A of the terminal connection portion 21 facing the counterpart terminal 60 so as to protrude in a curved shape.
  • the contact portion 23 has a gentle curved surface shape that is almost flat.
  • the contact portion 23 of the present embodiment has a spherical shape with a large radius of curvature R.
  • the contact portion 23 is formed to have a radius of curvature R in the axial direction of the connection terminal 20 (the left-right direction in FIG. 2), and is formed in an arc shape in a side view.
  • the contact portion 23 is formed so as to have a radius of curvature R in a width direction (left-right direction in FIG. 3) orthogonal to the axial direction of the connection terminal 20, and has an arc shape in a front view. Is formed.
  • the contact portion 23 is formed in a spherical shape having the same radius of curvature R in the axial direction and the width direction of the connection terminal 20.
  • the radius of curvature R of the contact portion 23 is a virtual sphere Sp (FIGS.
  • the spherical contact portion 23 having a large radius of curvature R shown in FIGS. 4 and 5 comes into contact with the contact surface 61 (flat surface) of the mating terminal 60 at one point (one point). According to such a contact portion 23, even when the partner terminal 60 is twisted, the contact area with the partner terminal 60 is kept substantially constant, so that high heat generation due to a rapid increase in contact resistance can be suppressed. it can. Further, since the connection state between the contact portion 23 and the contact surface 61 of the partner terminal 60 is close to the connection state between the flat surfaces, the contact pressure between the contact portion 23 and the contact surface 61 is dispersed, and the insertion and removal of the partner terminal 60 can be prevented. Wear due to repeated use is easily suppressed.
  • the contact portion 23 is formed, for example, over the entire length of the connection terminal 20 in the width direction.
  • the length dimension of the contact portion 23 (that is, the dimension of the contact portion 23 extending in the axial direction of the connection terminal 20) can be, for example, about 8 to 12 mm.
  • the width dimension of the contact portion 23 (that is, the dimension of the contact portion 23 extending in the width direction of the connection terminal 20) can be, for example, about 15 to 20 mm.
  • the spring portion 30 is, for example, a leaf spring.
  • a metal material such as copper, a copper alloy, aluminum, an aluminum alloy, and stainless steel can be used.
  • the spring portion 30 may be subjected to a surface treatment such as silver plating, tin plating, or aluminum plating depending on the type of the constituent metal and the use environment.
  • the spring portion 30 has a flat base 31 and a pair of elastic pieces 32 extending from both side edges of the base 31 in a cantilever manner.
  • the spring portion 30 is, for example, a single component in which a base end portion 31 and a pair of elastic pieces 32 are integrally formed.
  • the pair of elastic pieces 32 are formed so as to face each other.
  • a pressing portion 33 swelling toward the other elastic piece 32 is formed on a surface of each elastic piece 32 facing the other elastic piece 32.
  • the outer surface of each pressing portion 33 is formed, for example, in a spherical shape.
  • the pair of pressing portions 33 are formed to face each other.
  • the spring portion 30 sandwiches the connection terminal 20 and the mating terminal 60 such that the contact portion 23 of the connection terminal 20 and the contact surface 61 (flat surface) of the mating terminal 60 make elastic contact. ing.
  • the spring portion 30 clamps the connection terminal 20 and the mating terminal 60 with a strong spring force so that the connection terminal 20 and the mating terminal 60 do not slide and wear when the electric wire 50 is shaken.
  • the spring portion 30 presses the connection terminal 20 toward the mating terminal 60 by the pressing portion 33 of one elastic piece 32 in a state where the connection terminal 20 and the mating terminal 60 are sandwiched, and presses the pressing portion 33 of the other elastic piece 32. With this, the partner terminal 60 is pressed toward the connection terminal 20.
  • connection terminal 20 and the partner terminal 60 are sandwiched by the pair of pressing portions 33.
  • a contact load is applied by the pair of pressing portions 33 in a direction perpendicular to a contact portion between the contact portion 23 of the connection terminal 20 and the contact surface 61 of the partner terminal 60.
  • the contact load applied to the contact portion between the contact portion 23 and the contact surface 61 by the pair of pressing portions 33 can be, for example, about 80 to 120 N.
  • the distance between the pair of elastic pieces 32, the swelling amount of the pair of pressing portions 33, and the like are set so that a contact load of about 80 to 120N can be applied to the contact portion.
  • the contact portion 23 of the connection terminal 20 comes into contact with the contact surface 61 of the partner terminal 60 with a high contact pressure, and the connection terminal 20 and the partner terminal 60 are electrically connected. Connected to. In such a contact state, even if the electric wire 50 is shaken, the sliding of the contact portion 23 of the connection terminal 20 against the mating terminal 60 is suitably suppressed.
  • the terminal connection portion 21 has an engagement hole 24 formed between the contact portion 23 and the electric wire connection portion 22.
  • the engagement hole 24 is formed so as to penetrate the terminal connection portion 21 in the thickness direction.
  • the retainer 40 is made of a synthetic resin.
  • the retainer 40 is made of, for example, a synthetic resin having excellent heat resistance and rigidity.
  • the retainer 40 has a retainer main body 41, a cover part 42 that sandwiches a part of the terminal connection part 21 in cooperation with the retainer main body 41, and a hinge 43 that connects the retainer main body 41 and the cover part 42 to be able to open and close. are doing.
  • the retainer 40 is, for example, a single component in which the retainer body 41, the cover 42, and the hinge 43 are integrally formed.
  • the hinge 43 has flexibility.
  • the retainer main body 41 has an engagement protrusion 44 that engages with the engagement hole 24 of the terminal connection portion 21.
  • the retainer 40 is configured such that the engagement protrusion 44 of the retainer main body 41 is engaged with the engagement hole 24 of the terminal connection portion 21, and then the engagement hole 45 provided at the distal end of the cover 42 and the end face of the retainer main body 41. Is fixed to the terminal connecting portion 21 by engaging with a locking claw (not shown) provided on the terminal connecting portion 21.
  • the electric wire connection part 22 is electrically connected to an end of the electric wire 50.
  • the electric wire 50 is a covered electric wire having a core wire 51 made of a metal material having excellent conductivity and an insulating coating 52 covering the outer periphery of the core wire 51.
  • the insulating coating 52 is peeled off from the end of the electric wire 50 over a predetermined length range, and the core wire 51 is exposed.
  • the electric wire connection part 22 is connected to the core wire 51 exposed from the insulating coating 52.
  • the electric wire connection part 22 is connected to the core wire 51 by, for example, crimping. Thereby, the electric wire connection part 22 and the core wire 51 are electrically connected.
  • the conductor cross-sectional area of the electric wire 50 that is, the cross-sectional area of the core wire 51 can be, for example, about 40 to 80 mm 2 .
  • the radius of curvature R at the contact portion 23 is set to be extremely large so that the contact resistance between the contact portion 23 of the connection terminal 20 and the contact surface 61 of the mating terminal 60 is reduced. I have.
  • the setting of the radius of curvature R at the contact portion 23 will be described in detail below.
  • the film resistance is a contact resistance generated by the presence of an insulating film such as an oxide film formed on the conductor surface.
  • an insulating film such as an oxide film formed on the conductor surface.
  • the concentrated resistance is caused by microscopic irregularities on the conductor surface, and the current flows only through the true contact formed in the microscopic area of the macroscopic (apparent) contact area. It is due to.
  • F is the contact load
  • S is the apparent contact area
  • K is the surface roughness
  • H is the hardness
  • ⁇ is the metal resistivity
  • ⁇ f is the film resistivity
  • d is the thickness of the insulating film.
  • the first term on the right side represents the contribution of the concentrated resistance
  • the second term on the right side represents the contribution of the film resistance.
  • the concentrated resistance has a -1/2 power dependency on the contact load F
  • the coating resistance has a -1 power dependency on the contact load F. That is, in the region where the contact load F is small, the contribution of the coating resistance to the total contact resistance increases, whereas in the region where the contact load F is large, the contribution of the concentrated resistance to the total contact resistance increases. For this reason, the film resistance is dominant in the region where the contact load F is small, while the concentrated resistance is dominant in the region where the contact load F is large.
  • F a large contact load
  • the contact resistance Rk in the connector 10 is dominated by the concentrated resistance. Therefore, the contact resistance Rk in the connector 10 can be expressed by the following equation (2), ignoring the film resistance (that is, the second term on the right side) of the above equation (1).
  • the contact area S between the contact portion 23 forming a spherical surface and the contact surface 61 forming a flat surface can be expressed by the following formula (3) from a well-known Hertz contact formula.
  • R is the radius of curvature of the contact portion 23
  • E is the Young's modulus of the contact portion 23.
  • the contact resistance Rk can be expressed by the following equation.
  • ⁇ is a constant satisfying the relational expression of 0 ⁇ ⁇ 1
  • ⁇ is a constant satisfying the relational expression of 0 ⁇ ⁇ 1.
  • ⁇ in the above equation (4) is a constant determined based on the surface roughness K, the hardness H, the metal resistivity ⁇ , and the Young's modulus E of the contact portion 23, and is specific to the material of the contact portion 23 (connection terminal 20). Is a constant.
  • the contact resistance Rk in the case where there are a large number of contact portions can be expressed by the following equation, where n is the number of contacts.
  • connection terminal using a conventional cylindrical contact spring uses such a multi-contact connection structure.
  • the present inventors have paid attention to the fact that the contact resistance Rk can be reduced by increasing the radius of curvature R of the contact portion 23 from the above equation (4).
  • the present inventors have developed a contact portion that can reduce the contact resistance Rk to a value equal to or greater than that of a multi-contact connection structure, even in a single-contact connection structure in which one point of the contact portion 23 is connected to the partner terminal 60. 23 radii of curvature R were derived.
  • the theoretical upper limit (maximum limit) of the number of contacts n in the conventional multi-contact connection structure will be examined.
  • the conductor cross-sectional area of the round pin terminal is set to substantially match the conductor cross-sectional area A of the electric wire connected to the round pin terminal.
  • the diameter of the round pin terminal connected to the electric wire is set to 8 mm.
  • the width of each of the plurality of spring pieces of the cylindrical contact spring that is externally fitted to the round pin terminal needs to be at least 0.5 mm from the viewpoint of strength.
  • the theoretical upper limit of the radius of curvature that can be set for a spring piece having a width of 0.5 mm is about 0.5 mm.
  • the theoretical upper limit n max of the number of spring pieces (that is, the number of contacts) that can be set in the conventional contact spring can be expressed by the following equation.
  • the contact resistance Rk at the connection terminal using the conventional cylindrical contact spring can be obtained by the following equation.
  • the radius of curvature R of the contact portion 23 in the single contact connection structure that can reduce the contact resistance Rk to at least the same as that of the multi-contact connection structure is calculated as: It can be derived as in the following equation.
  • the multi-contact connection is performed.
  • the contact resistance Rk can be reduced to be equal to or more than the structure.
  • a spherical contact portion 23 having the same radius of curvature R that satisfies the expression (8) is formed in both the axial direction and the width direction of the connection terminal 20. Thereby, the contact resistance Rk can be reduced to be equal to or higher than that of the multi-contact connection structure.
  • the multi-contact connection structure is obtained.
  • the contact resistance Rk can be reduced to the same or more.
  • Expression (9) for example, when the conductor cross-sectional area A of the electric wire 50 is 50 mm 2 , the curvature radius R of the contact portion 23 is set to 20.45 mm or more, which is equivalent to the multi-contact connection structure. As described above, it is possible to realize a single contact connection structure capable of reducing the contact resistance Rk.
  • the contact portion 23 bulging in a curved shape toward the contact surface 61 of the mating terminal 60 on the flat terminal connecting portion 21 electrically connected to the mating terminal 60 having the flat contact surface 61. was formed. Further, the contact portion 23 was formed in a curved surface having a radius of curvature R satisfying the above equation (8). Thereby, even if it is a single contact connection structure by the contact part 23, the contact resistance Rk can be made lower than or equal to that of the multi-contact connection structure. As a result, an increase in the contact resistance Rk can be suppressed as compared with the multi-contact connection structure.
  • the contact portion 23 of the flat terminal connection 21 and the contact surface 61 of the flat terminal 60 are brought into direct contact with each other. Since these flat terminal connecting portions 21 and flat mating terminals 60 can be formed by press working, they can be manufactured at lower cost than conventional connecting terminals manufactured by cutting. Thereby, an increase in manufacturing cost can be suitably suppressed.
  • terminal connecting portion 21 and the mating terminal 60 are flat terminals, even if the terminal thickness is further increased due to a further increase in current, punching can be performed by press working. Therefore, it is possible to suppress the problem that the terminal connection portion 21 and the mating terminal 60 cannot be manufactured. In other words, it is possible to easily cope with an increase in current.
  • the spherical contact portions 23 having the same radius of curvature R satisfying the expression (8) are formed in both the axial direction and the width direction of the connection terminal 20.
  • the contact portion 23 is formed in a gentle spherical shape close to a substantially flat surface, and comes in contact with the contact surface 61 (flat surface) of the partner terminal 60 at one point. According to such a contact portion 23, even when the partner terminal 60 is twisted, the contact area with the partner terminal 60 is kept substantially constant, so that high heat generation due to a rapid increase in contact resistance can be suppressed. it can.
  • connection state between the contact portion 23 and the contact surface 61 of the partner terminal 60 is close to the connection state between the flat surfaces, the contact pressure between the contact portion 23 and the contact surface 61 is dispersed, and the insertion and removal of the partner terminal 60 can be prevented. Wear due to repeated use is easily suppressed.
  • the contact portion 23 is formed in a curved surface having a radius of curvature R satisfying the above equation (9). Thereby, even if it is a single contact connection structure by the contact part 23, the contact resistance Rk can be made lower than or equal to that of the multi-contact connection structure.
  • connection terminal 20 and the mating terminal 60 The spring portion 30 for clamping the connection terminal 20 and the mating terminal 60 is provided so that the contact portion 23 of the connection terminal 20 and the contact surface 61 of the mating terminal 60 make elastic contact.
  • the connection terminal 20 and the mating terminal 60 are pressed by the spring portion 30 in a direction approaching each other, and the connection terminal 20 and the mating terminal 60 are suitably electrically connected.
  • the connector 10 ⁇ / b> A has a connection terminal 70, a cylindrical spring portion 80, and an electric wire 50 connected to the connection terminal 70.
  • the mating terminal 60 is inserted into the connector 10A.
  • the connection terminal 70 has a terminal connection part 71 connected to the counterpart terminal 60 and an electric wire connection part 72 electrically connected to an end of the electric wire 50.
  • the connection terminal 70 is, for example, a single component in which the terminal connection portion 71 and the electric wire connection portion 72 are connected integrally in the axial direction.
  • a material of the connection terminal 70 for example, a metal material such as copper, a copper alloy, aluminum, an aluminum alloy, and stainless steel can be used.
  • the connection terminal 70 may be subjected to a surface treatment such as silver plating, tin plating, or aluminum plating according to the type of the constituent metal and the use environment.
  • the connection terminal 70 can be formed, for example, by pressing a metal plate having excellent conductivity.
  • the terminal connection portion 71 is a terminal having a flat plate shape.
  • the terminal connection portion 71 has a contact portion 73 formed to bulge out toward the counterpart terminal 60 in a curved shape when connected to the counterpart terminal 60.
  • the contact portion 73 has a gentle curved surface shape that is almost flat.
  • the contact portion 73 of the present embodiment has a curved surface with a large radius of curvature R.
  • the contact portion 73 has a first radius of curvature in the axial direction of the connection terminal 70 (the left-right direction in FIG. 8) (that is, the radius of the virtual sphere Sp indicated by the two-dot chain line in FIG. 8). And formed in an arc shape in a side view.
  • the contact portion 73 has a second radius of curvature different from the first radius of curvature in the width direction (left-right direction in FIG. 9) orthogonal to the axial direction of the connection terminal 70 (that is, in FIG. 9). (The radius of the virtual sphere Sp indicated by the two-dot chain line), and is formed in an arc shape in a front view.
  • the contact portion 73 is formed in a toroidal surface shape having different radii of curvature in the axial direction and the width direction of the connection terminal 70.
  • the contact portion 73 is formed such that at least one of the first radius of curvature in the axial direction and the second radius of curvature in the width direction has a radius of curvature R that satisfies Expression (8) or Expression (9).
  • the contact portion 73 of the present embodiment is formed such that both the first radius of curvature in the axial direction and the second radius of curvature in the width direction have a radius of curvature R that satisfies the expression (8) or (9). I have.
  • the second radius of curvature in the width direction see FIG.
  • the contact portion 73 having such a toroidal surface shape comes into contact with the contact surface 61 of the partner terminal 60 shown in FIG. 7 at one point (one location). Note that, as shown in FIG. 7, the contact portion 73 is formed, for example, on a part of the connection terminal 70 in the width direction.
  • the distal end portion 74 of the terminal connection portion 71 (that is, the end portion opposite to the end portion connected to the electric wire connection portion 72 in the axial direction) is formed thinner than other portions of the terminal connection portion 71.
  • a material of the spring portion 80 for example, a metal material such as copper, a copper alloy, aluminum, an aluminum alloy, and stainless steel can be used.
  • the spring portion 80 may be subjected to a surface treatment such as silver plating, tin plating, or aluminum plating, depending on the type of the constituent metal and the use environment.
  • the spring portion 80 has a cylindrical portion 81.
  • the tubular portion 81 is formed, for example, in a square tubular shape.
  • the tubular portion 81 has an open end 81A and an open end 81B axially opposite to the open end 81A.
  • the connection terminal 70 is inserted into the cylindrical portion 81 from the opening end 81A, and the mating terminal 60 is inserted from the opening end 81B.
  • the spring portion 80 is folded inward from an open end 81 ⁇ / b> A of the cylindrical portion 81 and extends toward the open end 81 ⁇ / b> B, and an elastic piece 82 extends from the open end 81 ⁇ / b> B of the cylindrical portion 81.
  • a holding portion 83 turned inward.
  • the holding portion 83 has, for example, a U-shaped cross section, and is formed so as to face the opening end 81A side.
  • the tip portion 74 of the connection terminal 70 inserted into the cylindrical portion 81 is fitted into the holding portion 83.
  • the distal end portion 74 of the connection terminal 70 is held by the holding portion 83, and the fluttering of the connection terminal 70 is suppressed, and the connection terminal 70 is positioned in the cylindrical portion 81.
  • the elastic piece 82 After the elastic piece 82 is folded inward from the opening end 81A, the elastic piece 82 extends diagonally inward toward the opening end 81B side, and has a shape bent so that the tip end extends diagonally outward. Is formed.
  • the bent portion 82 ⁇ / b> A that bulges inward the most is in contact with the partner terminal 60.
  • the mating terminal 60 is pressed toward the connection terminal 70 by the elastic piece 82.
  • a contact load is applied by the elastic piece 82 in a direction perpendicular to a contact portion between the contact portion 73 of the connection terminal 70 and the contact surface 61 of the mating terminal 60.
  • the contact load applied to the contact portion between the contact portion 73 and the contact surface 61 by the elastic piece 82 can be, for example, about 80 to 120 N.
  • the bulging amount of the bent portion 82A in the elastic piece 82 and the width and thickness of the elastic piece 82 are set so that a contact load of about 80 to 120N can be applied to the contact portion. I have.
  • the contact portion 73 of the connection terminal 70 comes into contact with the contact surface 61 of the partner terminal 60 with a high contact pressure, and the connection terminal 70 and the partner terminal 60 are electrically connected. Connected to.
  • connection terminal 70 and the mating terminal 60 are inserted into the cylindrical portion 81 so that the contact portion 73 of the connecting terminal 70 and the contact surface 61 (flat surface) of the mating terminal 60 make elastic contact. It is sandwiched between the peripheral surface and the elastic piece 82.
  • the mating terminal 60 in a state where the mating terminal 60 and the connection terminals 20 and 70 are connected, the mating terminal 60 is connected from the connection portion thereof in a direction parallel to the axial direction of the connection terminals 20 and 70.
  • the terminals 20 and 70 are formed so as to extend in a direction opposite to the extending direction, but are not limited thereto.
  • the mating terminal 60 may be inserted into the spring portion 30 along a direction intersecting (here, orthogonal) with the axial direction of the connection terminal 20.
  • the mating terminal 60 in a state where the mating terminal 60 and the connection terminal 20 are connected, the mating terminal 60 intersects (here, orthogonal) with the axial direction of the connection terminal 20 from their connection portion. It is formed to extend in the direction of
  • the mating terminal 60 may extend from the connection portion in a direction intersecting (here, orthogonal to) the axial direction of the connection terminal 70. .
  • the contact portions 23 and 73 are formed in a curved shape having a radius of curvature in both the axial direction and the width direction of the connection terminals 20 and 70, but are not limited thereto.
  • the connection terminal 20 is formed in a cylindrical surface (cylindrical surface) having no curvature in the axial direction of the connection terminal 20 and having a radius of curvature R in the width direction of the connection terminal 20.
  • a contact portion 23A may be provided.
  • the contact portion 23A is formed such that the radius of curvature R in the width direction becomes the radius of curvature R that satisfies Expression (8) or Expression (9).
  • the contact portion 23A Since the contact portion 23A has no curvature in the axial direction, it is formed to extend linearly in the axial direction. Such a contact portion 23A comes into line contact with the contact surface 61 (flat surface) of the mating terminal 60 shown in FIG. Specifically, the contact portion between the contact portion 23A and the contact surface 61 is formed so as to extend linearly along the axial direction of the connection terminal 20. According to the contact portion 23A, since the connection terminal 20 is formed so as to have a large radius of curvature R in the width direction, even when the partner terminal 60 is twisted, the contact area with the partner terminal 60 is substantially reduced. Can be kept constant. In addition, the two-dot chain line in the figure illustrates a virtual sphere when the connection terminal 20 has a curvature in the axial direction for comparison.
  • the structure of the spring portions 30 and 80 in each of the above embodiments can be changed as appropriate. That is, if the contact terminals 23, 73 of the connection terminals 20, 70 and the contact surface 61 of the partner terminal 60 can be elastically contacted with each other, the connection terminals 20, 70, and the partner terminal 60 can be held by a spring.
  • the structures of the parts 30 and 80 are not particularly limited.
  • the terminal connection portions 21 and 71 are provided with one contact portion 23 and 73, respectively.
  • the terminal connection portions 21 and 71 may be provided with a plurality of contact portions 23 and 73, respectively. Good.
  • the contact portion 23 is formed over the entire length of the connection terminal 20 in the width direction.
  • the present invention is not limited to this.
  • the contact portion 23 may be formed on a part of the connection terminal 20 in the width direction.
  • the contact portion 73 is formed on a part of the connection terminal 70 in the width direction.
  • the present invention is not limited to this.
  • the contact portion 73 may be formed over the entire length of the connection terminal 70 in the width direction.
  • connection terminals 20, 70 and the electric wires 50 in each of the above embodiments is not limited to crimping.
  • the connection terminals 20, 70 and the electric wire 50 may be connected by laser welding or ultrasonic welding.

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  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

La présente invention concerne une borne de connexion 20 comprenant : une partie de connexion de borne en forme de plaque plate 21, connectée électriquement à une borne homologue 60 ayant une surface de contact 61 formant une surface plate ; et une partie de connexion de fil électrique 22 connectée électriquement à un fil électrique 50. La partie de connexion de borne 21 présente une partie de contact 23 formée de manière à être renflée en forme de surface incurvée vers la surface de contact 61 de la borne homologue 60 dans un état de connexion à la borne homologue 60. La partie de contact 23 est formée pour présenter une forme de surface incurvée ayant un grand rayon de courbure, formant une forme de surface légèrement incurvée sensiblement proche d'une surface plate.
PCT/JP2019/033401 2018-09-12 2019-08-27 Borne de connexion et connecteur WO2020054390A1 (fr)

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JP2018170368A JP2020043002A (ja) 2018-09-12 2018-09-12 接続端子及びコネクタ

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JP2022076141A (ja) * 2020-11-09 2022-05-19 住友電装株式会社 コネクタ
CN116420285A (zh) * 2020-11-12 2023-07-11 株式会社自动网络技术研究所 连接器及连接器装置
JP7548161B2 (ja) 2020-11-12 2024-09-10 株式会社オートネットワーク技術研究所 コネクタおよびコネクタ装置
JP2023082918A (ja) * 2021-12-03 2023-06-15 株式会社オートネットワーク技術研究所 コネクタ
JP2023082936A (ja) * 2021-12-03 2023-06-15 株式会社オートネットワーク技術研究所 コネクタ

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