WO2011057256A2 - Borne ayant un effet de frottement élevé, une faible résistance de conduction et une fiabilité élevée - Google Patents

Borne ayant un effet de frottement élevé, une faible résistance de conduction et une fiabilité élevée Download PDF

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Publication number
WO2011057256A2
WO2011057256A2 PCT/US2010/056007 US2010056007W WO2011057256A2 WO 2011057256 A2 WO2011057256 A2 WO 2011057256A2 US 2010056007 W US2010056007 W US 2010056007W WO 2011057256 A2 WO2011057256 A2 WO 2011057256A2
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WO
WIPO (PCT)
Prior art keywords
contact portion
terminal
convex
connector
contact
Prior art date
Application number
PCT/US2010/056007
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English (en)
Other versions
WO2011057256A3 (fr
WO2011057256A8 (fr
Inventor
Toshihisa Hirata
Kenta Sasaki
Original Assignee
Molex Incorporated
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Publication date
Application filed by Molex Incorporated filed Critical Molex Incorporated
Publication of WO2011057256A2 publication Critical patent/WO2011057256A2/fr
Publication of WO2011057256A3 publication Critical patent/WO2011057256A3/fr
Publication of WO2011057256A8 publication Critical patent/WO2011057256A8/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/57—Fixed connections for rigid printed circuits or like structures characterised by the terminals surface mounting terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/716—Coupling device provided on the PCB
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/73—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures connecting to other rigid printed circuits or like structures

Definitions

  • the Present Application relates, generally, to terminals that are fitted to connectors, and, in particular, to a terminal having a configuration having a high wiping effect and, consequently, a low conduction resistance and high reliability.
  • connectors have been used, for example, for electrically connecting wires, connecting wires to a circuit board or electrically connecting a pair of parallel circuit boards to each other.
  • Such connectors are provided with a plurality of terminals, configured such that when the connector is fitted to a counterpart connector, the terminals are brought into electrical contact with counterpart terminals of the counterpart connector. Therefore, the terminals have a small contact area so as to increase contact pressure, so that a reliable electrical contact state can be maintained between the terminals.
  • An example of such terminals fitted to a connector is disclosed in Japanese Patent Application No. 2004- 111081.
  • Fig. 12 is a cross-sectional view illustrating a contact state between terminals of a conventional connector.
  • a first terminal 861 is fitted to a housing of a first connector, which is mounted on a first circuit board.
  • a second terminal 961 is fitted to a housing of a second connector, which is mounted on a second circuit board.
  • the first terminal 861 is provided with a tail portion, soldered to a connection pad of the first circuit board, and a contact portion 865, configured to make contact with the second terminal 961 of the second connector.
  • the second terminal 961 is provided with a tail portion that is soldered to a connection pad of the second circuit board and a contact portion 965, configured to make contact with the first terminal 861 of the first connector.
  • the contact portion 865 of the first terminal 861 has a curved surface such that a central portion in a width direction thereof protrudes further outward than both ends. Moreover, the contact portion 965 of the second terminal 961 has formed therein a concave portion 966 which has slope surfaces 966a. Due to this structure, the size of an area where the contact portion 865 of the first terminal 861 makes contact with the contact portion 965 of the second terminal 961 decreases, and thus a contact pressure between the contact portion 865 of the first terminal 861 and the contact portion 965 of the second terminal 961 increases. Therefore, foreign material which adheres to the surface of the contact portion 865 of the first terminal 861 or the contact portion 965 of the second terminal 961 can be removed easily, improving contact reliability.
  • the first terminal 861 and the second terminal 961 are so-called bellows contact-type terminals.
  • Such terminals are formed by punching a rolled metal plate to obtain a comb-teeth shaped member, which has a number of elongated strip- shaped plates having a base thereof connected to a carrier plate; applying press working so as to bend the strip-shaped plates in the plate-thickness direction into a squeezed box-like shape; and cutting the squeezed box-like strip- shaped plates from the carrier plate. Therefore, both surfaces of the first terminal 861 and the second terminal 961 are configured as rolled surfaces having a very smooth surface. Thus, even when the contact portion 865 of the first terminal 861 is processed into a curved surface, that surface will be smooth.
  • At least one of the terminals is a so-called stitcher-type terminal, it may become possible to obtain a sufficient wiping effect.
  • This type of terminal is formed by punching a rolled metal plate into a bent shape. A fractured surface formed by the punching serves as a contact surface, contacting the surface of the counterpart terminal.
  • the contact surface is not a smooth rolled surface but a rough fractured surface, it is possible to obtain a sufficient wiping effect, effectively removing foreign material.
  • the stitcher-type terminals are formed by punching metal plates one by one, the material yield is poor and the cost increases. Moreover, it takes time to fit the terminals into a housing, thus increasing the assembly cost.
  • a terminal includes a plurality of terminals, fitted to a connector and configured such that, when the connector is fitting to a counterpart connector, the terminals are brought into electrical contact with counterpart terminals fitted to the counterpart connector.
  • Each terminal is formed of a strip- shaped metal plate, the surfaces of which are configured as a rolled surface.
  • Each terminal includes a cantilever-like contacting arm portion, having elastic properties, and a contact portion, formed in a free end of the contacting arm portion so as to make contact with the counterpart terminal.
  • the contact portion is provided with a convex contact portion protruding outward from one of the rolled surfaces in a direction normal to the rolled surface.
  • the convex contact portion is a bulging portion formed by plastically deforming the metal plate so that a part of the metal plate is pressed in a direction parallel to the rolled surface.
  • the terminal can have a configuration such that the convex contact portion is formed by plastically deforming at least a part of the metal plate, so that a relation between a denominator and a numerator expressing an aspect ratio thereof is reversed. Further, the terminal can have a configuration such that the convex contact portion has a sectional shape, such that the width dimension is smaller than the thickness dimension. Further, the terminal can have a configuration such that a surface corresponding to a peak of the convex contact portion comes into contact with the counterpart terminal and is configured as a rough surface. Further, the terminal can have a configuration such that, when the connector is fitted to the counterpart connector, the contact surface slides on the surface of the counterpart terminal.
  • the terminal can have a configuration such that the convex contact portion is a bulging portion formed by plastically deforming the contact portion, so that a part of the contact portion in the vicinity of the rolled surface is pressed in a direction parallel to the rolled surface.
  • the terminal can have a configuration such that the contact portion is provided with concave portions formed on both sides of the convex contact portion.
  • the terminal has a configuration in which a part of the terminal formed of a strip- shaped metal plate, the surfaces of which are configured as a rolled surface, is plastically deformed so as to be pressed in a direction parallel to the rolled surface, thus forming a convex contact portion which protrudes in a direction normal to the rolled surface. Due to such a configuration, the terminal is capable of exhibiting a high wiping effect and has a low conduction resistance and high reliability.
  • FIG. 1 is a perspective view of a first connector and a second connector according to the
  • FIG. 2 is a perspective view of the first and second connectors of Fig. 1, illustrating a state where the connectors are engaged, as viewed from the fitting face of the first connector;
  • Fig. 3 is a cross-sectional view illustrating the state where the first and second connectors of Fig. 1 are not yet engaged by fitting with each other;
  • Fig. 4 is a cross-sectional view illustrating the state where the first and second connectors of Fig. 1 are engaged by fitting with each other;
  • FIG. 5 is a perspective view of a first terminal of the Present Application
  • Fig. 6 is a side view of the first terminal of Fig. 5;
  • Fig. 7 is a cross-sectional view of a first contact portion of the Present Application, taken along the Arrows A- A of Fig. 6;
  • FIG. 8 is a perspective view of a terminal as a reference example
  • Fig. 9 is a perspective view of a first terminal of the Present Application
  • Fig. 10 is a side view of the first terminal of Fig. 9;
  • Fig. 11 is a cross-sectional view of a first contact portion of the Present Application, taken along the Arrows B-B of Fig. 10;
  • Fig. 12 is a cross-sectional view illustrating a contact state between terminals of a conventional connector.
  • directional representations i.e., up, down, left, right, front, rear and the like, used for explaining the structure and movement of the various elements of the Present Application, are relative. These representations are appropriate when the elements are in the position shown in the Figures. If the description of the position of the elements changes, however, it is assumed that these representations are to be changed accordingly.
  • a first connector 1 comprises a one of a pair of connectors constituting a connector assembly.
  • a second connector 101 is a counterpart connector.
  • the first connector 1 and the second connector 101 may be any type of connector, provided they have respective terminals configured to be electrically connected when both connectors are fitted thereto.
  • the first and second connectors may be wire-to- wire connectors in which both connectors are connected to the termination ends of wires, or wire-to-board connectors in which one connector is connected to the termination end of a wire and the other is mounted on a board.
  • the first and second connectors will be described as being board-to-board connectors mounted on a board.
  • the first connector 1 is a surface-mounted connector to which first terminals 61 are fitted, and is mounted on a surface of a first board (not illustrated).
  • the second connector 101 is also a surface-mounted connector to which second terminals 161 as counterpart terminals are fitted, and is mounted on a surface of a second board (also not illustrated).
  • the board-to-board connector assembly constituted by the first connector 1 and the second connector 101, is configured to electrically couple the first board and the second board.
  • the first board and the second board are assumed to be printed circuit boards used in electronic devices, for example, and may be any type of boards.
  • the first connector 1 includes a first housing 11 integrally formed of an insulating material.
  • the first housing 11 is a generally rectangular parallelepiped member having a generally rectangular, thick plate-like shape.
  • a concave portion 12, having a generally rectangular shape having a surrounded perimeter, is formed on a fitting side (i.e., the upper side in Fig. 3), where the second connector 101 is fitted.
  • a first protrusive convex portion 13, as an island portion is formed in the concave portion 12, integral with the first housing 11.
  • side wall portions 14, configured to extend in parallel to the first protrusive convex portion 13, are formed at both sides of the first protrusive convex portion 13, integral with the first housing 11.
  • first protrusive convex portion 13 and the side wall portions 14 protrude upwardly from the bottom portion of the concave portion 12 and extend in the longitudinal direction of the first housing 11.
  • recessed groove portions 12a, a portion of the concave portion 12, being elongated concave insertion portions configured to extend in the longitudinal direction of the first housing 11 are formed at both sides of the first protrusive convex portion 13, to be disposed between the first protrusive convex portion 13 and the side wall portions 14.
  • first terminal-receiving inside cavities 15a having a recessed groove shape
  • first terminal-receiving outside cavities 15b having a recessed groove shape
  • first terminal receiving cavities 15a and the first terminal-receiving outside cavities 15b will be collectively referred to as first terminal receiving cavities 15.
  • the first terminal 61 is integrally formed by processing a conductive metal plate.
  • the first terminal 61 is provided with a holding portion 63, a tail portion 62 connected to a lower end of the holding portion 63, an upper connection portion 67 connected to an upper end of the holding portion 63, a second contact portion 66 formed in the vicinity of an inner end of the upper connection portion 67, a lower connection portion 64 connected to the second contact portion 66, a cantilever-like contacting arm portion 68 connected to the other end of the lower connection portion 64, and a first contact portion 65 formed in a free end of the contacting arm portion 68.
  • the holding portions 63 extend in the up-down direction; i.e., in the thickness direction of the first housing 11, to fit in the first terminal-receiving outside cavities 15b.
  • the tail portions 62 are connected to the holding portions 63 and extend in the left-right direction; i.e., outwardly in the width direction of the first housing 11, to be connected to connection pads connected to a conductive trace on the first board.
  • the upper connection portions 67 are connected to the holding portions 63 and extend inwardly in the width direction of the first housing 11.
  • the second contact portion 66 having a curved shape and configured to downwardly bend and inwardly protrude in the width direction of the first housing 11, is formed at the inner end of the upper connection portion 67.
  • the lower connection portion 64 has a generally U- shape in a side view thereof and is connected to the lower end of the second contact portion 66.
  • the first contact portion 65 is formed in the free end - the upper end - of the contacting arm portion 68. Moreover, the first contact portion 65 is provided with a first convex contact portion 65a, configured to protrude outward in the width direction of the first housing 11.
  • the first terminals 61 fit into the first terminal receiving cavities 15 from the mounting side (i.e., the lower side in Fig. 3), and are fixedly secured to the first housing 11 when the holding portions 63 are clamped by the side walls of the first terminal-receiving outside cavities 15b, which are disposed outside the side wall portions 14. In this state, where the first terminals 61 are mounted in the first housing 11, the first contact portions 65 and the second contact portions 66 are positioned on opposing left and right sides of the recessed groove portion 12a.
  • first terminals 61 are integrally formed by processing to a metal plate, they have some degree of elasticity. Moreover, as is obvious from the shape of the first terminals 61, the gap between the opposing ones of the first contact portions 65 and the second contact portions 66 is elastically changeable. That is, when the second terminals 161 of the second connector 101 are positioned between the first contact portions 65 and the second contact portions 66, the gap between the first contact portions 65 and the second contact portions 66 is elastically increased. [0037] Furthermore, first protrusive end portions 21, as fitting guide portions, are arranged at both ends in the longitudinal direction of the first housing 11, respectively. A concave protrusive end portion 22 is formed in each of the first protrusive end portions 21.
  • the concave protrusive end portions 22 are generally rectangular concave portions, and are connected to both ends in the longitudinal direction of each of the recessed groove portions 12a. Moreover, the concave protrusive end portions 22 function as a concave guide portion in which a second protrusive end portion 122 of the second connector 101 is inserted, when where the first connector 1 and the second connector 101 are engaged.
  • Each of the first protrusive end portions 21 is provided with sidewall extension portions 21b, configured to extend in the longitudinal direction of the first housing 11 from both ends in the longitudinal direction of the side wall portion 14, and an end wall portion 21c, configured to extend in the short-axis direction of the first housing 11 and having both ends connected to the sidewall extension portions 21b.
  • the end wall portion 21c and the sidewall extension portions 21b connected to both ends of the end wall portion 21c form a continuous side wall having an inverted C-shape, thereby defining the sides of the rectangular concave protrusive end portion 22.
  • first auxiliary metallic brackets 51 are attached to the first protrusive end portions 21.
  • the first auxiliary metallic brackets 51 are integrally formed by processing a metal plate, and are received and held in first concave bracket holding portions 26 formed in the sidewall extension portions 21b.
  • the lower ends of the first auxiliary metallic brackets 51 are coupled to fixing pads on the first board.
  • the second connector 101 includes a second housing 111 integrally formed of an insulating material.
  • the second housing 111 is a generally rectangular parallelepiped member having a generally rectangular, thick plate-like shape.
  • An elongated recessed cavity portion 113 configured to extend in the longitudinal direction of the second housing 111, and second protrusive convex portions 112, configured to define the outer sides of the recessed cavity portion 113 and extend in the longitudinal direction of the second housing 111, is integrally formed on a fitting side (i.e., the lower side in Fig. 3) of the second housing 111 where the first connector 1 is fitted.
  • the second protrusive convex portions 112 are formed along both sides of the recessed cavity portion 113 and the second housing 111. Moreover, second terminals 161 are arranged in each of the second protrusive convex portions 112. Finally, as illustrated in the Figures, the recessed cavity portion 113 is closed by a bottom portion at a mounting surface (i.e., the upper surface in Fig. 3) where it is mounted on the second board.
  • the second terminal 161 is integrally formed by processing a conductive metal plate.
  • the second terminal 161 is provided with a body portion 163, a tail portion 162 connected to a lower end of the body portion 163, a first contact portion 165 connected to an upper end of the body portion 163, a connection portion 164 connected to an upper end of the first contact portion 165, and a second contact portion 166 connected to an outer end of the connection portion 164.
  • a concave contact portion 166a engaged with the second convex contact portion 66a of the first terminal 61, is formed on the surface of the second contact portion 166.
  • the body portion 163 is held in a state where a perimeter thereof is surrounded by the second housing 111. Moreover, the tail portion 162 is connected to the lower end of the second housing 111, which extends in the horizontal direction of the body portion 163 - the width direction of the second housing 111, and extends towards the outer side of the second housing 111 to be connected to a connection pad connected to a conductive trace on the second board.
  • the first contact portion 165 is connected to the body portion 163 so as to extend in the vertical direction - in the thickness direction of the second housing 111.
  • the connection portion 164 is connected to the first contact portion 165 and extends towards the outer side in the width direction of the second housing 111.
  • the second contact portion 166 is bent downwardly to connect to the outer end of the connection portion 164 so as to extend downwardly.
  • the second terminal 161 is integrated with the second housing 111 by means of over- molding; i.e., the second housing 111 is formed by filling resin in a cavity of a mold in which the second terminal 161 is set. In this way, the second terminal 161 is integrally attached to the second housing 111 where the body portion 163 is buried in the second housing 111, and the surfaces of the first contact portion 165, the connection portion 164 and the second contact portion 166 are exposed to the side and fitting surface of the second convex portion 112.
  • second protrusive end portions 122 are arranged at both ends in the longitudinal direction of the second housing 111, respectively.
  • Each of the second protrusive end portions 122 extends in the short-axis direction of the second housing 111 and has both ends thereof connected to both ends in the longitudinal direction of the second convex portion 112, and an upper surface thereof is a generally rectangular flat surface.
  • the second protrusive end portions 122 are inserted into the concave protrusive end portions 22 of the first protrusive end portions 21 of the first connector 1 in a state where the first connector 1 and the second connector 101 are fitted thereto.
  • second auxiliary metallic brackets 151 are attached to the second protrusive end portions 122.
  • the second auxiliary metallic brackets 151 integrally formed by processing a metal plate and are held in the second protrusive end portion 122.
  • the lower ends of the second auxiliary metallic brackets 151 are connected to fixing pads on the second board.
  • a reference terminal 261 is a so-called bellows contact- type terminal, although it has a similar shape to the first terminal 61.
  • the reference terminal 261 formed by punching a rolled metal plate to obtain a comb-teeth shaped member which has a number of elongated strip- shaped plates having a base thereof connected to a carrier plate; applying press working to the member obtained thus so as to bend the strip-shaped plates in a plate-thickness direction into a squeezed box-like shape; and cutting the squeezed box-like strip-shaped plates from the carrier plate.
  • the reference terminal 261 is provided with a holding portion 263, a tail portion 262 connected to a lower end of the holding portion 263, an upper connection portion 267 connected to an upper end of the holding portion 263, a second contact portion 266 formed in the vicinity of an inner end of the upper connection portion 267, a lower connection portion 264 connected to the second contact portion 266, a contacting arm portion 268 connected to the other end of the lower connection portion 264, and a first contact portion 265 formed in the vicinity of a free end of the contacting arm portion 268.
  • first and second surfaces 269a and 269b of the reference terminal 261 are respectively part of the front and rear surfaces of the rolled metal plate and are thus rolled surfaces which are smooth.
  • the holding portion 263, the tail portion 262, the upper connection portion 267, the second contact portion 266, and the lower connection portion 264 have the same structure as the holding portion 63, the tail portion 62, the upper connection portion 67, the second contact portion 66, and the lower connection portion 64 of the first terminal 61.
  • the contacting arm portion 268 and the first contact portion 265 have different structures from those of the contacting arm portion 68 and the first contact portion 65 of the first terminal 61.
  • the contacting arm portion 268 is a constant- width strip- shaped plate member
  • the first contact portion 265 is a curved portion, formed by bending a portion in the vicinity of the free end of the contacting arm portion 268 into a U-shaped form so as to protrude towards the second contact portion 266.
  • Portions in the vicinity of both ends in the width direction of the first surface 269a are slightly collapsed to form slope surfaces 265b which extend approximately over the contacting arm portion 268, or at least approximately the first contact portion 265. Moreover, the portion between both slope surfaces 265b is a small-width osculating plane 265a. The osculating plane 265a is disposed closer to the second contact portion 266 than both slope surfaces 265b.
  • the osculating plane 265a of the first contact portion 265 makes contact with the first contact portion 165 of the second terminal 161.
  • contact area decreases and contact pressure increases.
  • the osculating plane 265a is a part of the first surface 269a and is thus a rolled surface which is a smooth surface. Therefore, even when the first connector 1 and the second connector 101 are fit to each other, and the osculating plane 265a slides on the first contact portion 165 of the second terminal 161, it is difficult to obtain a sufficient wiping effect and to effectively remove foreign material adhering to the surface of the first contact portion 165.
  • the first terminal 61 is provided with the cantilever-like contacting arm portion 68, connected to the other end of the lower connection portion 64, and the first contact portion 65 formed in the free end of the contacting arm portion 68.
  • the first contact portion 65 is provided with the first convex contact portion 65a, configured to protrude towards the second contact portion 66.
  • the first convex contact portion 65a is formed by plastically deforming an elongated strip-shaped plate so that a part of the plate corresponding to the first contact portion 65 is pressed in the width direction of the plate - namely, in the direction parallel to the rolled surface - so as to protrude outward in the normal direction of the rolled surface.
  • the first convex contact portion 65a has a hook-like shape having a sharp tip end in the side view thereof, as illustrated in Fig. 6. Moreover, the first convex contact portion 65a has an approximately triangular or trapezoidal shape having a sharp tip end in a sectional shape thereof, as illustrated in Fig. 7, and a portion which corresponds to the peak of the first convex contact portion 65a and includes the tip end is the contact surface 65b.
  • the first terminal 61 is basically formed by punching a rolled metal plate to obtain a comb-teeth shaped member which has a number of elongated strip- shaped plates having a base thereof connected to a carrier plate; applying press working to the member obtained thus so as to bend the strip-shaped plates in the plate-thickness direction into a squeezed box-like shape; and cutting the squeezed box-like strip-shaped plates from the carrier plate.
  • first and second surfaces 69a and 69b of the first terminal 61 are respectively part of the front and rear surfaces of the rolled metal plate, and are thus smooth, rolled surfaces.
  • the width dimension is larger than the thickness dimension, namely, W1>T1.
  • a relation between a denominator and a numerator expressing the aspect ratio (Tl/Wl) of the strip-shaped plate is that the numerator is smaller than the denominator.
  • the width dimension is smaller than the thickness dimension; namely, W2 ⁇ T2.
  • a relation between a denominator and a numerator expressing the aspect ratio (T2/W2) of the first convex contact portion 65a is that the denominator is smaller.
  • the first convex contact portion 65a is formed into a bulging shape by plastically deforming the free end of the contacting arm portion 68, formed of a strip-shaped plate so as to be pressed in the direction from both sides in the width direction thereof - namely, in the direction parallel to the first surface 69a - which is a rolled surface, so as to protrude outward in the normal direction of the first surface 69a.
  • the amount of plastic deformation applied at that moment corresponds to an amount that can reverse at least the relation between the denominator and the numerator expressing the aspect ratio. That is to say, the first convex contact portion 65a is formed by plastically deforming a strip-shaped plate satisfying the relation W1>T1 so that the relation W2 ⁇ T2 is satisfied.
  • the formation of the first convex contact portion 65a is preferably carried out by cold working. For example, by applying press working to the free end of the contacting arm portion 68, it is possible to form the first convex contact portion 65a having a bulging shape. In this way, when the tip end of the first convex contact portion 65a, having such a profile that the width dimension is smaller than the thickness dimension slides on the first contact portion 165 of the second terminal 161, the small- width contact surface 65b is squeezed into the surface of the first contact portion 165. Therefore, it is possible to obtain a high wiping effect and to effectively remove foreign material.
  • the contact surface 65b of the first convex contact portion 65a is not formed from a residual portion of the first surface 69a, but from metal flowing from other portions so as to have a bulging shape.
  • the contact surface 65b is not a smooth surface similar to the first surface 69a which is the rolled surface, but rough. Therefore, when the contact surface 65b slides on the first contact portion 165 of the second terminal 161, it is possible to obtain a higher wiping effect and to more effectively remove foreign material adhering to the surface of the first contact portion 165.
  • the degree of work hardening can be increased, and thus the hardness of the first convex contact portion 65a including the contact surface 65b can be increased much; i.e., they become very hard. Therefore, when the contact surface 65b slides on the first contact portion 165 of the second terminal 161, the contact surface 65b is more strongly squeezed into the surface of the first contact portion 165, and thus an extremely high wiping effect can be obtained.
  • the second terminal 161 is formed by punching a rolled metal plate to obtain a comb- teeth shaped member which has a number of elongated strip- shaped plates having a base connected to a carrier plate; applying press working to the member obtained thus so as to bend the strip-shaped plates in a plate-thickness direction into such a side-view shape as illustrated in Figs. 3-4; and cutting the strip-shaped plates from the carrier plate. Therefore, the surfaces of the first contact portion 165 and the second contact portion 166 are smooth, rolled surfaces.
  • the first connector 1 is assumed to be surface- mounted on the first board, when the tail portions 62 of the first terminals 61 are connected to a non-illustrated connection pads, connected to a conductive trace on the first board, and the lower ends of the first reinforcing brackets 51 are connected to the fixing pads on the first board.
  • the second connector 101 is assumed to be surface-mounted on the second board when the tail portions 162 of the second terminals 161 are connected to the non-illustrated connection pads, connected to a conductive trace on the second board, and the lower ends of the second reinforcing brackets 151 are connected to the fixing pads on the second board.
  • the connectors are manipulated so that the fitting face of the first connector 1 opposes the fitting face of the second connector 101, as illustrated in Fig. 3.
  • the positions of the second protrusive convex portions 112 on the left and right sides of the second connector 101 correspond to the positions of the recessed groove portions 12a on the left and right sides of the first connector 1, the positioning between the first connector 1 and the second connector 101 is completed.
  • the second terminals 161 of the second connector 101 are positioned between the first contact portions 65 and the second contact portions 66 of the first terminals 61, so that the first contact portions 65 of the first terminals 61 are brought into contact with the first contact portions 165 of the second terminals 161, and the second contact portions 66 of the first terminals 61 are brought into contact with the second contact portions 166 of the second terminals 161. In this way, the gap between the first contact portion 65 and the second contact portion 66 is elastically increased by pressing the second terminal 161.
  • the first convex contact portion 65a of the first terminal 61 is moved relative to the first contact portion 165 while maintaining contact with the first contact portion 165 of the second terminal 161. More specifically, the contact surface 65b at the tip end of the first convex contact portion 65a slides on the first contact portion 165 of the second terminal 161. In this case, since the contact surface 65b is rough, with a small width and a high hardness, when the contact surface 65b slides on the first contact portion 165 of the second terminal 161, it is squeezed on the surface of the first contact portion 165. Thus, it is possible to obtain a high wiping effect and to effectively remove foreign material. Accordingly, a stable connection can be constantly maintained between the first terminal 61 and the second terminal 161.
  • the first terminals 61 are fit to the first connector 1 and configured such that, when the first connector 1 is fit to the second connector 101, the terminals 61 are brought into electrical contact with the second terminals 161 fitted to the second connector 101.
  • the first terminals 61 are formed of a strip-shaped metal plate, both of which are configured as a rolled surface.
  • Each terminal 61 includes the cantilever- like contacting arm portion 68 having elastic properties and the first contact portion 65, formed in the free end of the contacting arm portion 68 so as to make contact with the second terminal 161.
  • the first contact portion 65 is provided with the first convex contact portion 65a, which protrudes outward from one of the rolled surfaces in a direction normal to the rolled surface.
  • the first convex contact portion 65a is a bulging portion formed by deforming the metal plate so that a part of the plate is pressed in a direction parallel to the rolled surface. Due to such a configuration, it is possible to exhibit a high wiping effect, thus effectively removing foreign material. Thus, it is possible to decrease the conduction resistance with the second terminal 161 and improve the reliability thereof.
  • the first convex contact portion 65a is formed by plastically deforming at least a part of the metal plate so that the relation between a denominator and a numerator expressing the aspect ratio thereof is reversed. Therefore, since the degree of work hardening increases when the amount of plastic deformation is increased, the first convex contact portion 65a is very hard. Accordingly, since the first convex contact portion 65a can be effectively squeezed into the surface of the first contact portion 165, the wiping effect is increased further.
  • the first convex contact portion 65a has a sectional shape such that a width dimension is smaller than a thickness dimension. Due to such a configuration, since the small- width contact surface 65b is squeezed into the surface of the first contact portion 165, it is possible to obtain a high wiping effect and to effectively remove foreign material. Moreover, since the first convex contact portion 65a has a large thickness dimension and is thus hard to deform, the first convex contact portion 65a can be effectively squeezed into the surface of the first contacting portion 165, and thus the wiping effect can be increased more.
  • the surface corresponding to the peak of the first convex contact portion 65a is the contact surface 65b which comes into contact with the second terminal 161 and is configured as a rough surface. Due to such a configuration, it is possible to obtain a further higher wiping effect and to more effectively remove foreign material. Finally, when the first connector 1 is engaged by fitting with the second connector 101, the contact surface 65b slides on the surface of the second terminal 161. Due to such a configuration, it is possible to obtain a sufficient wiping effect and to effectively remove foreign material.
  • Figs. 9-11 illustrate another terminal according to the Present Application. It should be noted that components having the same structure as that described above will be denoted by the same reference numerals, and the description thereof will be omitted, as will a description of the same operation and effect.
  • the first terminal 61 is provided with a cantilever- like contacting arm portion 71 connected to the other end of the lower connection portion 64 and a first contact portion 72 formed in the free end of the contacting arm portion 71.
  • Other components have the same structure as that described above, and the description thereof will be omitted.
  • the first terminal 61 is basically formed by punching a rolled metal plate to obtain a comb-tooth shaped member which has a number of elongated strip- shaped plates having a base thereof connected to a carrier plate; applying press working to the member obtained thus so as to bend the strip-shaped plates in a plate-thickness direction into a squeezed box-like shape; and cutting the squeezed box-like strip-shaped plates from the carrier plate.
  • the first contact portion 72 is a curved portion formed by bending a portion in the vicinity of the free end of the contacting arm portion 71 into a U-shaped form so as to protrude towards the second contact portion 66. Moreover, the first contact portion 72 is provided with a first convex contact portion 72a, configured to protrude further towards the second contact portion 66.
  • the first convex contact portion 72a is formed by plastically deforming the first contact portion 72, which is an elongated strip-shaped plate, so that a part of the first contact portion 72 in the vicinity of an original surface 72d is pressed in the width direction of the plate - namely, in the direction parallel to the rolled surface - so as to protrude outward in the normal direction of the rolled surface.
  • the original surface 72d is a portion of the first surface 69a of the first terminal 61 corresponding to the first contact portion 72, and is thus a smooth, rolled surface.
  • the first convex contact portion 72a has an approximately triangular or trapezoidal shape having a sharp tip end in a side view thereof, as illustrated in Fig. 10, and the tip end is configured to protrude further outward than the original surface 72d as illustrated in Fig. 11.
  • a portion which corresponds to the peak of the first convex contact portion 72a and includes the tip end is a contact surface 72b.
  • the first contact portion 72 is provided with concave portions 72c formed on both sides of the first convex contact portion 72a.
  • the first convex contact portion 72a is formed into a bulging shape by plastically deforming the first contact portion 72 so that a portion of the first contact portion 72 in the vicinity of the original surface 72d is pressed in the direction from both sides in the width direction thereof; namely, in the direction parallel to the original surface 72d, which is a rolled surface. Therefore, the concave portions 72c are formed as a result of forming the first convex contact portion 72a and thus have a depressed shape.
  • first convex contact portion 72a metal constituting the portion of the first contact portion 72 in the vicinity of the original surface 72d undergoes a plastic flow to move towards the center from both sides in the width direction thereof, whereby the first convex contact portion 72a is formed into a bulging shape. Therefore, the concave portions 72c are formed on both sides of the first convex contact portion 72a as the impressions of the movement of the metal.
  • the formation of the first convex contact portion 72a is preferably carried out by cold working. By applying press working to the first contact portion 72, it is possible to form the first convex contact portion 72a having a bulging shape.
  • the first convex contact portion 72a has such a profile that, in the first convex contact portion 72a, the width dimension is smaller than the thickness dimension, namely, W3 ⁇ T3.
  • the relation between a denominator and a numerator expressing the aspect ratio (T3/W3) of the first convex contact portion 72a is that the denominator is smaller than the numerator.
  • the strip-shaped plate constituting the first terminal 61 has a profile, similar to that described above, such that, in the first terminal 61, the width dimension is larger than the thickness dimension, namely, W1>T1.
  • the relation between a denominator and a numerator expressing the aspect ratio (Tl/Wl) of the strip-shaped plate is that the numerator is smaller than the denominator.
  • the first convex contact portion 72a is formed into a bulging shape by plastically deforming the first contact portion 72 so that a portion of the first contact portion 72 in the vicinity of the original surface 72d is pressed in the direction from both sides in the width direction thereof - namely, in the direction parallel to the original surface 72d, which is a rolled surface, so as to protrude outward in the normal direction of the original surface 72d.
  • the amount of plastic deformation applied at that moment corresponds to an amount that can reverse at least the relation between the denominator and the numerator expressing the aspect ratio. That is, the first convex contact portion 72a is a portion which is formed by plastically deforming a strip-shaped plate satisfying the relation W1>T1 so that the relation W3 ⁇ T3 is satisfied.
  • the contact surface 72b of the first convex contact portion 72a is not formed from a residual portion of the original surface 72d, but from metal flowing from other portions so as to have a bulging shape.
  • the contact surface 72b is not a smooth surface similar to the original surface 72d which is the rolled surface, but is rough. Therefore, when the contact surface 72b slides on the first contact portion 165 of the second terminal 161, it is possible to obtain a further higher wiping effect and to more effectively remove foreign material.
  • the contact surface 72b has a small width, when the contact surface 72b slides on the first contact portion 165 of the second terminal 161, the contact surface 72b is squeezed into the surface of the first contact portion 165, possibly obtaining a further higher wiping effect.
  • the degree of work hardening can be increased, and thus the hardness of the first convex contact portion 72a including the contact surface 72b can be increased greatly. Therefore, when the contact surface 72b slides on the first contact portion 165 of the second terminal 161, the contact surface 72b is more strongly squeezed into the surface of the first contact portion 165, and thus an extremely high wiping effect can be obtained.
  • Other structures, operations and effects are the same as that described above, and redundant descriptions thereof will be omitted.
  • the first convex contact portion 72a is a bulging portion formed by plastically deforming the first contact portion 72 so that a portion of the first contact portion 72 in the vicinity of the rolled surface is pressed in the direction parallel to the rolled surface. Due to such a configuration, the first convex contact portion 72a generally has a very small size, and the contact surface 72b has an extremely small width. Therefore, the contact surface 72b can be squeezed into the surface of the first contact portion 165, and an extremely high wiping effect can be obtained. Moreover, the first contact portion 72 is provided with the concave portions 72c formed on both sides of the first convex contact portion 72a. Due to such a configuration, since foreign material removed by the wiping effect from the surface of the first contact portion 165 of the second terminal 161 is received in the concave portions 72c, it is possible to prevent the foreign material from scattering and contaminating the surroundings.

Abstract

L'invention porte sur une borne. La borne est disposée sur un connecteur, et est configurée de telle sorte que, lorsque le connecteur est disposé sur un connecteur d'accouplement correspondant, la borne vient électriquement en contact avec la borne d'accouplement correspondante, qui est disposée sur le connecteur d'accouplement correspondant. La borne est constituée par une plaque métallique en forme de bande, dont les surfaces sont configurées sous la forme d'une surface laminée. La borne comprend une partie de bras de contact du type en porte-à-faux ayant des propriétés élastiques, et une partie de contact, qui est formée dans l'extrémité libre de la partie de bras de contact de façon à venir en contact avec la borne d'accouplement correspondante (161). La partie de contact comporte une partie de contact convexe, qui fait saillie vers l'extérieur à partir d'une surface laminée dans une direction normale à celle-ci.
PCT/US2010/056007 2009-11-09 2010-11-09 Borne ayant un effet de frottement élevé, une faible résistance de conduction et une fiabilité élevée WO2011057256A2 (fr)

Applications Claiming Priority (2)

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JP2009256082A JP5578833B2 (ja) 2009-11-09 2009-11-09 端子
JP2009-256082 2009-11-09

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WO2011057256A2 true WO2011057256A2 (fr) 2011-05-12
WO2011057256A3 WO2011057256A3 (fr) 2011-09-09
WO2011057256A8 WO2011057256A8 (fr) 2013-05-30

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JP5908225B2 (ja) * 2011-07-06 2016-04-26 第一電子工業株式会社 電気コネクタ
WO2016189891A1 (fr) * 2015-05-27 2016-12-01 京セラコネクタプロダクツ株式会社 Connecteur
JP6239582B2 (ja) * 2015-12-29 2017-11-29 第一電子工業株式会社 電気コネクタ
JP7073054B2 (ja) * 2016-07-26 2022-05-23 株式会社フジクラ レセプタクルコネクタ及びレセプタクルコネクタの製造方法

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US5478248A (en) * 1993-12-17 1995-12-26 Berg Technology, Inc. Connector for high density electronic assemblies
WO2006057621A1 (fr) * 2004-11-29 2006-06-01 Fci Connectors Singapore Pte Ltd Raccord a compression
US20080207014A1 (en) * 2005-01-28 2008-08-28 Molex Incorporated Board Mounted Electrical Connector

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JP3354902B2 (ja) * 1999-06-25 2002-12-09 エヌイーシートーキン株式会社 コネクタ用コンタクトおよびその製造方法
JP2004311124A (ja) * 2003-04-03 2004-11-04 Alps Electric Co Ltd 端子部材及びその端子部材を備えたコネクタ及び端子部材の製造方法
JP4592462B2 (ja) * 2005-03-23 2010-12-01 モレックス インコーポレイテド 基板接続用コネクタ
JP4526428B2 (ja) * 2005-04-18 2010-08-18 モレックス インコーポレイテド 基板対基板コネクタ
JP2007165195A (ja) * 2005-12-15 2007-06-28 Matsushita Electric Works Ltd コネクタ
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US5478248A (en) * 1993-12-17 1995-12-26 Berg Technology, Inc. Connector for high density electronic assemblies
WO2006057621A1 (fr) * 2004-11-29 2006-06-01 Fci Connectors Singapore Pte Ltd Raccord a compression
US20080207014A1 (en) * 2005-01-28 2008-08-28 Molex Incorporated Board Mounted Electrical Connector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021071676A1 (fr) * 2019-10-11 2021-04-15 Molex, Llc Connecteur et ensemble connecteur

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JP2011100686A (ja) 2011-05-19
WO2011057256A3 (fr) 2011-09-09
JP5578833B2 (ja) 2014-08-27
WO2011057256A8 (fr) 2013-05-30

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