EP2639887A1 - Druckeinpassbares Steckerendgerät - Google Patents

Druckeinpassbares Steckerendgerät Download PDF

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Publication number
EP2639887A1
EP2639887A1 EP13153883.7A EP13153883A EP2639887A1 EP 2639887 A1 EP2639887 A1 EP 2639887A1 EP 13153883 A EP13153883 A EP 13153883A EP 2639887 A1 EP2639887 A1 EP 2639887A1
Authority
EP
European Patent Office
Prior art keywords
area
section
press
connector terminal
type connector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13153883.7A
Other languages
English (en)
French (fr)
Other versions
EP2639887B1 (de
Inventor
Takayoshi Endo
Takuya TAKEDA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
I Pex Inc
Original Assignee
Dai Ichi Seiko Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2012058817A external-priority patent/JP5445605B2/ja
Application filed by Dai Ichi Seiko Co Ltd filed Critical Dai Ichi Seiko Co Ltd
Priority to EP17153029.8A priority Critical patent/EP3206261A1/de
Publication of EP2639887A1 publication Critical patent/EP2639887A1/de
Application granted granted Critical
Publication of EP2639887B1 publication Critical patent/EP2639887B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

Definitions

  • the invention relates to a press-fit type connector terminal to be inserted into an electrically conductive through-hole formed through a printed circuit board.
  • Various press-fit type connector terminals have been suggested. For instance, they have a terminal contact section having a cross-section in a needle-eye, C-shaped, N-shaped or ⁇ -shaped form.
  • connection terminal including a head to which a cable is connected, and a body to be inserted into a through-hole formed through a substrate.
  • the body is centrally formed with a hole extending in a length-wise direction thereof, and the hole is formed with a plurality of slits extending from an inner wall to an outer wall of the body.
  • the hole is filled with electrically conductive adhesive.
  • Japanese Patent Application Publication No. 2007-157469 has suggested a press-fit type terminal including a press-fit section, a terminal base, and a male terminal.
  • the press-fit section includes a contact having a shape which is readily able to make contact with a through-hole, and a compression section composed of elastic material. The compression section is inserted into an opening of the contact, and the compression section exerts an elastic force on the contact such that the contact is compressed onto the through-hole.
  • the International Publication WO2006/077827 has suggested a press-fit terminal including a press-fit contact section making electrical contact with an electrically conductive through-hole formed through a printed circuit board.
  • a single underlying plating layer or a plurality of underlying plating layers is(are) formed on a surface of a base material of the press-fit contact section.
  • On the uppermost playing layer is formed a layer composed of an alloy of Sn and a plating metal of which the uppermost playing layer is composed, and non-alloyed Sn is mixed in an outermost layer of the alloy layer.
  • the above-identified conventional press-fit type connector terminals are designed to have an outer diameter greater than an inner diameter of a through-hole formed through a printed circuit board, and have a press-fit section having low elasticity and to be inserted into a through-hole for making contact with the through-hole, a printed circuit board tends to be whitened due to a contact pressure exerted on the through-hole by the press-fit section, and a playing layer of the through-hole sometimes peels off. Since whitening of a printed circuit board means molecular destruction of components of which the board is composed, the molecular destruction induces not only degradation in electrical insulation of a printed circuit board and deterioration in a withstand voltage, but also an increase in a resistance of a circuit pattern.
  • a press-fit type connector terminal which is capable of reducing a force with which a press-fit type connector terminal is inserted into a through-hole formed through a printed circuit board, avoiding a contact section from being plastically deformed when a press-fit type connector terminal is inserted into a through-hole, avoiding a printed circuit board from being whitened, avoiding a plated surface of a through-hole from being degraded, and providing superior contact-reliability.
  • a press-fit type connector terminal including a pin section having a U-shaped or quadrangular cross-section, and a contact section situated at a front end of the pin section, the contact section including a contact piece surrounding an imaginary center line extending parallel to a longitudinal axis of the pin section, the contact piece being in the form of a barrel or a spindle, and a slit formed at a part of the contact piece and extending substantially parallel to the imaginary center line, the connector terminal being comprised of a single bent metal plate having elasticity.
  • the contact piece designed in the form of a barrel or a spindle is able to elastically enlarge or reduce a diameter thereof by virtue of the slits, ensuring that the contact piece defining the contact section can be elastically deformed to be inserted into a through-hole when the contact piece is inserted into a through-hole formed through a printed circuit board, the contact section does no longer exert an excessive compression force (contact pressure) onto an inner surface of a through-hole.
  • the press-fit type connector terminal may be designed to further include an inner shaft section situated in the contact section and continuous with at least one of the pin section and the contact piece.
  • a press-fit type connector terminal including a pin section having a U-shaped or quadrangular cross-section, and a contact section situated at a front end of the pin section, the contact section including a plurality of " ⁇ "-shaped or arcuate contact pieces having a longitudinal axis extending parallel to an imaginary center line extending parallel to a longitudinal axis of the pin section, and outwardly protruding so as to surround the imaginary center line, the connector terminal being comprised of a single bent metal plate having elasticity.
  • the contact section can be entirely in the form of a barrel which is able to elastically enlarge or reduce a diameter thereof, ensuring that since a plurality of the contact pieces defining the contact section are elastically deformed to be inserted into a through-hole when the press-fit type connector terminal is inserted into a through-hole formed through a printed circuit board, the contact section does no longer exert an excessive compression force (contact pressure) onto an inner surface of a through-hole.
  • the press-fit type connector terminal in accordance with the present invention can be formed by bending a single metal plate having elasticity, it is possible to reduce a number of parts and reduce fabrication costs. Comparing the " ⁇ "-shaped contact piece to the arcuate contact piece, the arcuate contact piece tends to have a higher yield strength, and hence, does not degrade until it deforms in a relatively much degree. Thus, the arcuate contact piece is superior to the " ⁇ "-shaped contact piece for enhancing repeatability with which the press-fit type connector terminal is inserted into and pulled out of a through-hole.
  • a press-fit type connector terminal including a pin section having a U-shaped or quadrangular cross-section, and an inner shaft section situated at a front end of the pin section, and a contact section including a plurality of " ⁇ "-shaped or arcuate contact pieces having a longitudinal axis extending parallel to a longitudinal axis of the inner shaft section, and outwardly protruding so as to surround the inner shaft section, the connector terminal being comprised of a single bent metal plate having elasticity.
  • the contact section can be entirely in the form of a barrel which is able to elastically enlarge or reduce a diameter thereof, ensuring that since a plurality of the contact pieces defining the contact section are elastically deformed to be inserted into a through-hole when the press-fit type connector terminal is inserted into a through-hole formed through a printed circuit board, the contact section does no longer exert an excessive compression force (contact pressure) onto an inner surface of a through-hole.
  • the contact section is designed to include a plurality of contact pieces having a longitudinal axis extending parallel to a longitudinal axis of the inner shaft section, and outwardly protruding so as to surround the inner shaft section, the inner shaft section is situated at the center of the contact pieces, ensuring stable contact.
  • the press-fit type connector terminal in accordance with the present invention can be formed by bending a single metal plate having elasticity, it is possible to reduce a number of parts and reduce fabrication costs.
  • the contact pieces are equally spaced away from adjacent ones.
  • each of the contact pieces makes contact with an inner surface of a through-hole, keeping a force for enlarging a diameter thereof, and hence, the contact pieces make contact with an inner surface of a through-hole at a plurality of positions at an equal pitch, contact reliability can be enhanced.
  • the inner shaft section is formed at an outer surface thereof with a protrusion protruding towards the contact piece.
  • the inner shaft section By so designing the inner shaft section, it is possible to prevent the excessive deformation of the contact pieces caused by reduction in a diameter of the contact pieces, by virtue of the protrusion, when the contact section of the press-fit type connector terminal is inserted into a through-hole formed through a printed circuit board, ensuring that repeatability with which the press-fit type connector terminal is inserted into and pulled out of a through-hole can be enhanced.
  • the press-fit type connector terminal further includes C-shaped binders arranged around distal and proximal ends of the contact piece so as to surround the imaginary center line.
  • the press-fit type connector terminal By designing the press-fit type connector terminal to further include the C-shaped binders, it is possible to stably arrange a plurality of the contact pieces, ensuring that contact reliability can be enhanced.
  • the press-fit type connector terminal further includes a tapered inclining section at a distal end of the binder situated at a distal end of the contact piece.
  • the press-fit type connector terminal By designing the press-fit type connector terminal to further include the tapered inclining section, since the tapered inclining section continuous to a distal end of the binder makes contact with an inner surface of a through-hole at an opening of the through-hole, and then, is guided into the through-hole when the contact section of the press-fit type connector terminal is inserted into a through-hole formed through a printed circuit board, ensuring insertability of the contact section can be enhanced.
  • the press-fit type connector terminal further includes a shoulder having a portion protruding beyond an outer surface of the pin section, or a flange having a portion having a diameter greater than an outer diameter of the pin section.
  • the press-fit type connector terminal By designing the press-fit type connector terminal to further include the shoulder or the flange, since it is possible to exert a compression force on the shoulder having a portion protruding beyond an outer surface of the pin section, or the flange having a portion having a diameter greater than an outer diameter of the pin section in order to insert the contact section into a through-hole formed through a printed circuit board, ensuring that workability with which the contact section is inserted into a through-hole formed through a printed circuit board can be enhanced.
  • the metal plate includes a band-shaped first area for forming the pin section, a band-shaped second area for forming the inner shaft section, the second area being continuous to a distal end of the first area and having a width smaller than the same of the first area, a connection area continuous to a distal end of the second area and having a width smaller than the same of the second area, and a third area for forming the contact section, the third area including a plurality of slits extending parallel to a longitudinal axis of the second area, the third area being continuous to a distal end of the connection area and being in the substantially rectangular form having a width greater than the same of the second area.
  • the metal plate By so designing the metal plate, it is possible to form the press-fit type connector terminal by folding the first area and the second area around the connection area longitudinally continuous to the first and second areas, folding the third area by 180 degrees towards the second area around the connection area, and bending the third area such that the third area surrounds the second area, ensuring that a fabrication yield can be enhanced.
  • the metal plate may be designed to include a band-shaped first area for forming the pin section, a band-shaped second area for forming the inner shaft section, the second area being continuous to a distal end of the first area and having a width smaller than the same of the first area, and a third area for forming the contact section, the third area including a plurality of slits extending parallel to a longitudinal axis of the second area, the third area being continuous to a distal end of the second area and being in the substantially rectangular form having a width greater than the same of the second area.
  • the metal plate may be designed to include a band-shaped first area for forming the pin section, a third area for forming the contact section, the third area including a plurality of slits extending parallel to a longitudinal axis of the first area, the third area being continuous to a distal end of the first area and being in the substantially rectangular form having a width greater than the same of the first area, and a band-shaped second area for forming the inner shaft section, the second area being continuous to a distal end of the third area and having a width smaller than the same of the third area.
  • At least a portion of the first area has a thickness greater than a thickness of the third area.
  • the first area By so designing the first area, it is possible to accomplish an optimal contact load regardless of a thickness of the first and third areas.
  • the second area includes a fourth area for forming a protrusion protruding both in width-wise and thickness-wise directions of the second area.
  • the second area By designing the second area to include the fourth area, a protrusion protruding towards the contact pieces can be readily formed on an outer surface of the inner shaft section.
  • the metal plate may be designed to include a band-shaped first area for forming the pin section, and a third area for forming the contact section, the third area including a plurality of slits extending parallel to a longitudinal axis of the first area, the third area being continuous to a distal end of the first area and being in the substantially rectangular form having a width greater than the same of the first area.
  • the metal plate By so designing the metal plate, it is possible to readily form the press-fit type connector terminal having the pin section and the contact section, but not having the inner shaft section. Furthermore, since it is not necessary to form the second area for forming the inner shaft section, it is possible to reduce a volume of the metal plate and lighten the press-fit type connector terminal.
  • the metal plate may be designed to include a band-shaped first area for forming the pin section, and a third area for forming the contact section, the third area being continuous to a distal end of the first area and being in the substantially rectangular form having a width greater than the same of the first area.
  • the metal plate By so designing the metal plate, it is possible to readily form the press-fit type connector terminal having the contact pieces in the form of a barrel or a spindle, and the slits formed at the contact pieces, but not having the inner shaft section.
  • the press-fit type connector terminal may be designed to further include a band-shaped second area for forming the inner shaft section, the second area being situated continuous to a distal end of the third area or between the first area and the third area, the second area having a width smaller than the same of the third area.
  • the press-fit type connector terminal having the inner shaft section within the contact pieces which are in the form of a barrel or a spindle can be readily formed.
  • the present invention provides the press-fit type connector terminal which is capable of reducing a force with which the press-fit type connector terminal is inserted into a through-hole formed through a printed circuit board, avoiding the contact section from being plastically deformed when the press-fit type connector terminal is inserted into a through-hole, avoiding a printed circuit board from being whitened, avoiding a plated surface of a through-hole from being degraded, and providing superior contact reliability.
  • the press-fit type connector terminal 100 in accordance with the first embodiment of the present invention is formed by bending a single metal plate 8 having elasticity, illustrated in FIG. 8 .
  • the press-fit type connector terminal 100 includes a pin section 11 having a U-shaped cross-section, an inner shaft section 12 continuous to a front end of the pin section 11, and a contact section 14 including a plurality of " ⁇ "-shaped contact pieces 13 extending parallel to a longitudinal axis of the inner shaft section 12, outwardly protruding so as to surround the inner shaft section 12, and equally spaced away from adjacent ones.
  • Each of the contact pieces 13 defining the contact section 14 is formed at both distal and proximal ends thereof with C-shaped binders 15 and 16 surrounding the inner shaft section 12.
  • the press-fit type connector terminal 100 includes the elongate bar-shaped pin section 11, the inner shaft section 12 continuous to a distal end of the pin section 11 and having a diameter smaller than the same of the pin section 11, and the contact section 14 in the form of a barrel to thereby surround the inner shaft section 12.
  • the contact section 14 can elastically enlarge and reduce a diameter thereof.
  • each of the contact pieces 13 defining the contact section 14 having been inserted into the through-hole 21 equally makes contact with an inner surface of the through-hole 21 at a plurality of positions, keeping a force by which the contact pieces 13 enlarge a diameter thereof, contact defectiveness would not occur, providing superior contact reliability.
  • the contact pieces 13 can be stably arranged both when the contact section 14 is inserted into the through-hole 21 and after the contact section 14 was inserted into the through-hole 21, as illustrated in FIGs. 6 and 7 , ensuring that contact reliability can be enhanced.
  • the press-fit type connector terminal 100 is formed by bending a single metal plate 10 having elasticity, illustrated in FIG. 8 .
  • the metal plate 10 includes a band-shaped first area 1 for forming the pin section 11, a band-shaped second area 2 continuous to a front end of the first area 1 for forming the inner shaft section 12, a connection area 3 continuous to a front end of the second area 2, and a third area 5 continuous to a front end of the connection area 3 for forming the contact section 14.
  • the second area 2 has a width 2w smaller than a width 1w of the first area 1.
  • the connection area 3 has a width 3w smaller than the width 2w of the second area 2 (the width 3w is a half of the width 2w).
  • the third area 5 has a width 5w greater than the width 2w of the second area 2.
  • the third area 5 is formed with a plurality of slits 4 extending in parallel with a longitudinal direction L (see FIG. 3 ) of the second area 2.
  • the connection area 3 has a side edge extending from a side edge 2a of the second area 2.
  • the press-fit type connector terminal 100 illustrated in FIG. 1 is formed by bending the metal plate 10 illustrated in FIG. 8 as follows.
  • both the first area 1 and the second area 2 are folded around a fold line 6 extending in a length-wise direction L of the first and second areas 1 and 2 such that the first and second areas 1 and 2 have a U-shaped cross-section.
  • the third area 5 is folded by 180 degrees towards the second area 2 around a fold line 3a crossing the connection area 3.
  • the third area 5 is bent such that edges 5a and 5b extending perpendicularly to the length-wise direction L are C-shaped, and pillars 5c of the third area 5 extending in parallel with the length-wise direction L are in the " ⁇ "-shaped form to thereby cause the third area 5 to be in the form of a barrel surrounding the inner shaft section 2.
  • the press-fit type connector terminal 100 can be formed by bending the single metal plate 100 having elasticity, it is possible to reduce a number of parts and reduce fabrication costs.
  • the press-fit type connector terminal 200 is formed by bending a single metal plate 210 having elasticity, illustrated in FIG. 14 .
  • the press-fit type connector terminal 200 includes a pin section 211 having a U-shaped cross-section, an inner shaft section 212 continuous to a front end of the pin section 211, and a contact section 214 including a plurality of " ⁇ "-shaped contact pieces 213 extending in parallel with a longitudinal axis of the inner shaft section 212, outwardly protruding so as to surround the inner shaft section 212, and equally spaced away from adjacent ones.
  • Each of the contact pieces 213 defining the contact section 214 is formed at both distal and proximal ends thereof with almost C-shaped binders 215 and 216 surrounding the inner shaft section 212.
  • the pin section 211 is formed in the vicinity of the contact section 214 with shoulders 201 protruding beyond an outer surface of the pin section 211.
  • the contact section 214 has the same shape and functions as those of the contact section 14 of the press-fit type connector terminal 100 illustrated in FIG. 1 . However, since the contact section 214 is designed to have the shoulders 201, it is possible to compress the shoulders 201 for inserting the contact section 214 of the press-fit type connector terminal 200 into a through-hole formed through a printed circuit board, ensuring enhanced workability.
  • the press-fit type connector terminal 200 since the press-fit type connector terminal 200 has the inner shaft section 212, it is possible to perpendicularly insert the press-fit type connector terminal 200 into a through-hole. Furthermore, even if the press-fit type connector terminal 200 were inclined when inserted into a through-hole, since the contact pieces 213 make contact with the inner shaft section 212, it is possible to prevent the press-fit type connector terminal 200 from excessively inclining, ensuring that the contact pieces 213 are not plastically deformed, and hence, can good contact condition with a through-hole.
  • the metal plate 210 includes a band-shaped first area 221 for forming the pin section 211, a band-shaped second area 222 for forming the inner shaft section 212, continuous to a front end of the first area 221 and having a width 222w smaller than a width 221w of the first area 221, and a substantially rectangular third area 223 for forming the contact section 214, extending beyond the second area at opposite sides, having a width 223w greater than the width 222w of the second area 222, and having a plurality of slits 224 extending in parallel with a longitudinal axis of the second area 222.
  • the first area 211 has protruding areas 227 and 228 for forming the shoulders 201, in the vicinity of the third area 223.
  • the press-fit type connector terminal 200 illustrated in FIG. 9 is formed by pressing the metal plate 210 having a shape illustrated in FIG. 14 , as follows.
  • the first area 221 is folded around a fold line 225 extending in a length-wise direction of the first area 221 such that the first area 221 has a U-shaped cross-section. Then, a connection section 226 situated at a boundary between the first area 221 and the second area 222 is stepped. Then, the third area 223 is bent such that pillars 223c of the third area 223 are in the " ⁇ "-shaped form to thereby cause the third area 223 to be in the form of a barrel surrounding the inner shaft section 222.
  • the press-fit type connector terminal 200 By fabricating the press-fit type connector terminal 200 through the use of the metal plate 210 having a shape illustrated in FIG. 14 , it is possible to perpendicularly insert the press-fit type connector terminal 200 into a through-hole, prevent a through-hole from being whitened, prevent a plated surface of a through-hole from being degraded, and enhancing reliability of the contact section 214.
  • the press-fit type connector terminal 300 is formed by bending a single metal plate 310 having elasticity, illustrated in FIG. 20 .
  • the press-fit type connector terminal 300 includes a pin section 311 having a U-shaped cross-section, an inner shaft section 312 continuous to a front end of the pin section 311, and a contact section 314 including a plurality of " ⁇ "-shaped contact pieces 313 extending in parallel with a longitudinal axis of the inner shaft section 312, outwardly protruding so as to surround the inner shaft section 312, and equally spaced away from adjacent ones.
  • Each of the contact pieces 313 defining the contact section 314 is formed at both distal and proximal ends thereof with C-shaped binders 315 and 316 surrounding the inner shaft section 312.
  • the pin section 311 is formed in the vicinity of the contact section 314 with a flange 301 having a diameter greater than an outer diameter of the pin section 311.
  • the contact section 314 has the same shape and functions as those of the contact section 14 of the press-fit type connector terminal 100 illustrated in FIG. 1 . However, since the contact section 314 is designed to have the flange 301, it is possible to compress the flange 301 for inserting the contact section 314 of the press-fit type connector terminal 300 into a through-hole formed through a printed circuit board, ensuring enhanced workability.
  • the press-fit type connector terminal 300 since the press-fit type connector terminal 300 has the inner shaft section 312 illustrated in FIG. 19 , it is possible to perpendicularly insert the press-fit type connector terminal 300 into a through-hole. Furthermore, even if the press-fit type connector terminal 300 were inclined when inserted into a through-hole, since the contact pieces 313 make contact with the inner shaft section 312, it is possible to prevent the press-fit type connector terminal 300 from excessively inclining, ensuring that the contact pieces 313 are not plastically deformed, and hence, can good contact condition with a through-hole.
  • the metal plate 310 includes a band-shaped first area 321 for forming the pin section 311, a substantially rectangular third area 323 for forming the contact section 314, continuous to a front end of the first area 321, having a width 323w greater than a width 321w of the first area 321, and having a plurality of slits 324 extending in parallel with a longitudinal axis of the first area 321, and a band-shaped second area 325 for forming the inner shaft section 312, continuous to a front end of the third area 323, and having a width 325w smaller than the width 323w of the third area 323.
  • the metal plate 310 further includes a fourth area 326 for forming the flange 301, continuous to the second area 325, and intersecting in T-shape with the second area 325.
  • the press-fit type connector terminal 300 illustrated in FIG. 15 is formed by pressing the metal plate 310 having a shape illustrated in FIG. 20 , as follows.
  • first area 321 and the second area 325 are folded around fold lines 327 and 328 extending in a length-wise direction of the first and second areas 321 and 325, respectively, such that the first and second areas 321 and 325 have a U-shaped cross-section.
  • the metal plate 310 is folded by 180 degrees around a fold line 329, and the fourth area 326 is bent in the form of a ring so as to surround the pin section 311.
  • the third area 323 is bent such that pillars 323c of the third area 323 are in the " ⁇ "-shaped form to thereby cause the third area 323 to be in the form of a barrel surrounding the inner shaft section 312.
  • the press-fit type connector terminal 300 By fabricating the press-fit type connector terminal 300 through the use of the metal plate 310 having a shape illustrated in FIG. 20 , it is possible to perpendicularly insert the press-fit type connector terminal 300 into a through-hole, prevent a through-hole from being whitened, prevent a plated surface of a through-hole from being degraded, and enhancing reliability of the contact section 314.
  • the press-fit type connector terminal 400 is formed by bending a single metal plate 410 having elasticity, illustrated in FIG. 26 .
  • the press-fit type connector terminal 400 includes a pin section 411 having a quadrangular cross-section, an inner shaft section 412 continuous to a front end of the pin section 411, and a contact section 414 including a plurality of " ⁇ "-shaped contact pieces 413 extending in parallel with a longitudinal axis of the inner shaft section 412, outwardly protruding so as to surround the inner shaft section 412, and equally spaced away from adjacent ones.
  • Each of the contact pieces 413 defining the contact section 414 is formed at both distal and proximal ends thereof with C-shaped binders 415 and 416 surrounding the square-pole shaped inner shaft section 412.
  • the pin section 411 is formed at a center in a length-wise direction with shoulders 401 protruding beyond an outer surface of the pin section 411.
  • the contact section 414 has the same shape and functions as those of the contact section 14 of the press-fit type connector terminal 100 illustrated in FIG. 1 . However, since the contact section 414 is designed to have the shoulders 401, it is possible to compress the shoulders 401 for inserting the contact section 414 into a through-hole formed through a printed circuit board, ensuring enhanced workability.
  • the press-fit type connector terminal 400 is designed to have the inner shaft section 412 having a quadrangular cross-section and being in the form of a square pole, it is possible to perpendicularly insert the press-fit type connector terminal 400 into a through-hole. Furthermore, even if the press-fit type connector terminal 400 were inclined when inserted into a through-hole, since the contact pieces 413 make contact with the inner shaft section 412, it is possible to prevent the press-fit type connector terminal 400 from excessively inclining, ensuring that the contact pieces 413 are not plastically deformed, and hence, can good contact condition with a through-hole.
  • the press-fit type connector terminal 400 illustrated in FIG. 21 is made from the metal plate 410 illustrated in FIG. 26 .
  • the metal plate 410 includes a first area 421 for forming the square-pole shaped pin section 411, a second area 422 for forming the square-pole shaped inner shaft section 412, continuous to a front end of the first area 421, a third area 423 for forming the contact section 414, continuous to a front end of the second area 422.
  • the second area 422 has a width 422w smaller than a width 421w of the first area 421.
  • the third area 423 is substantially rectangular, and has a width 423w greater than the width 422w of the second area 422.
  • the third area 423 is formed with a plurality of slits 424 extending in parallel with a longitudinal axis of the second area 422.
  • the first area 421 includes at a center in a length-wise direction thereof a fifth area 427 for forming the shoulders 401.
  • the first area 421 has a thickness greater than a thickness of the third area 423.
  • the second area 422 has a thickness smaller than a thickness of the first area 421, but greater than a thickness of the third area 423.
  • a relation among the thicknesses of the first to third areas 421, 422 and 423 can be changed by selecting a metal plate having a different shape, collapsing the first to third areas by pressing, or cutting the first to third areas.
  • the press-fit type connector terminal 400 illustrated in FIG. 21 is formed by pressing the metal plate 410 having a shape illustrated in FIG. 26 , as follows.
  • the third area 423 is folded by 180 degrees towards the second area 422 around a fold line 426 situated at a boundary between the second area 422 and the third area 423. Then, the third area 423 is bent such that side edges 423a and 423b of the third area 423 are in the C-shaped form and that pillars 423c of the third area 423 are bend in the " ⁇ "-shaped form to thereby cause the third area 423 to be in the form of a barrel surrounding the inner shaft section 422 therein.
  • the press-fit type connector terminal 400 By fabricating the press-fit type connector terminal 400 through the use of the metal plate 410 having a shape illustrated in FIG. 26 , it is possible to perpendicularly insert the press-fit type connector terminal 400 into a through-hole, prevent a through-hole from being whitened, prevent a plated surface of a through-hole from being degraded, and enhancing reliability of the contact section 414.
  • the press-fit type connector terminal 500 is formed by bending a single metal plate 510 having elasticity, illustrated in FIGs. 35A and 35B .
  • the press-fit type connector terminal 500 includes a pin section 511 having a U-shaped cross-section, an inner shaft section 512 continuous to a front end of the pin section 511, and a contact section 514 including a plurality of arcuate contact pieces 513 extending in parallel with a longitudinal axis of the inner shaft section 512, outwardly protruding so as to surround the inner shaft section 512, and equally spaced away from adjacent ones.
  • the inner shaft section 512 is formed at an outer surface thereof with a plurality of protrusions 501 protruding towards the contact pieces 513.
  • Each of the contact pieces 513 is formed at both distal and proximal ends thereof with C-shaped binders 515 and 516 surrounding the inner shaft section 512.
  • the binder 515 situated at front ends of the contact pieces 513 is designed to include at a distal end thereof a tapered inclining section 502.
  • the pin section 511 is formed in the vicinity of the contact section 514 in a length-wise direction thereof with shoulders 503 protruding beyond an outer surface of the pin section 511.
  • the press-fit type connector terminal 500 is used in the same way and has the same functions as the press-fit type connector terminal 200 illustrated in FIG. 9 .
  • the press-fit type connector terminal 500 is designed to have the protrusions 501 protruding towards the contact pieces 513, at an outer surface of the inner shaft section 512, it is possible to prevent, by virtue of the protrusions 501, the excessive deformation of the contact pieces 513 which is caused by the shrinkage in a diameter of the contact section 514 when the contact section 514 of the press-fit type connector terminal 500 is inserted into the through-hole 21 formed through the printed circuit board 20, as illustrated in FIG. 6 .
  • the press-fit type connector terminal 500 is designed to include the tapered inclining section 502 at a distal end of the binder 515 situated at distal ends of the contact pieces 513, when the contact section 514 of the press-fit type connector terminal 500 is inserted into the through-hole 21 (see FIG. 6 ) formed through the printed circuit board 20, the tapered inclining section 502 continuous to a distal end of the binder 515 makes contact with an inner surface of the through-hole 21 at an opening of the through-hole 21, and then, is guided into the through-hole 21, ensuring insertability of the contact section 54 into the through-hole 21 can be enhanced.
  • Each of the contact pieces 513 defining the contact section 514 in the press-fit type connector terminal 500 is designed to be arcuate. Since the arcuate contact pieces have a higher yield strength than the same of the " ⁇ "-shaped contact pieces, it is possible to prevent the contact pieces 513 from being degraded until until they deform in a relatively much degree. Thus, the arcuate contact piece 513 is superior to the " ⁇ "-shaped contact piece for enhancing repeatability with which the press-fit type connector terminal 500 is inserted into and pulled out of the through-hole 21.
  • the press-fit type connector terminal 500 illustrated in FIG. 27 is made from the metal plate 510 illustrated in FIGs. 35A and 35B .
  • the metal plate 510 includes a band-shaped first area 521 for forming the pin section 511, a substantially rectangular third area 523 for forming the contact section 514, continuous to a front end of the first area 521, having a width 523w greater than a width 521w of the first area 521, and having a plurality of slits 524 and pillars 523c both extending in parallel with a longitudinal axis of the first area 521, and a band-shaped second area 525 for forming the inner shaft section 512, continuous to a front end of the third area 523, and having a width 525w smaller than the width 523w of the third area 523.
  • the metal plate 510 further includes a fifth area 526 for forming the shoulders 503, continuous to the first area 521, and intersecting in T-shape with the first area 521.
  • the second area 525 is formed at a center thereof with a fourth area 517 for forming the protrusions 501.
  • the fourth area 517 protrudes beyond the second area 525 in both a width-wise direction 525w and a thickness-wise direction 525t of the second area 525.
  • the press-fit type connector terminal 500 illustrated in FIG. 27 is formed by pressing the metal plate 510 having a shape illustrated in FIGs. 35A and 35B , as follows.
  • the first area 521 and the second area 525 are folded around fold lines 527 and 528 extending in a length-wise direction of the first and second areas 521 and 525, respectively, such that the first and second areas 521 and 525 have a U-shaped cross-section.
  • the fifth area 526 is folded such that the fifth area 526 protrudes beyond the pin section 511.
  • the second area 525 is folded by 180 degrees around a fold line 529 towards the third area 523.
  • the third area 523 is bent such that pillars 523c of the third area 523 are arcuate to thereby cause the third area 523 to be in the form of a barrel surrounding the inner shaft section 512.
  • the press-fit type connector terminal 500 By fabricating the press-fit type connector terminal 500 through the use of the metal plate 510 having a shape illustrated in FIGs. 35A and 35B , it is possible to perpendicularly insert the press-fit type connector terminal 500 into the through-hole 21 (see FIG. 6 ) formed through the printed circuit board 20, prevent the through-hole 21 from being whitened, prevent a plated surface of the through-hole 21 from being degraded, and enhancing reliability of the contact section 514.
  • the press-fit type connector terminal 600 is formed by bending a single metal plate 610 having elasticity, illustrated in FIGs. 44A and 44B .
  • the press-fit type connector terminal 600 includes a pin section 611 having a U-shaped cross-section, and a contact section 614 continuous to a front end of the pin section 611.
  • the contact section 614 includes a plurality of " ⁇ "-shaped contact pieces 613 extending in parallel with an imaginary center line 614c extending in a length-wise direction L of the pin section 611, and outwardly protruding so as to surround the imaginary center line 614c.
  • a plurality of the contact pieces 613 is formed at both distal and proximal ends thereof with C-shaped binders 615 and 616 surrounding the imaginary center line 614c.
  • the binder 615 situated at front ends of the contact pieces 613 is designed to include at a distal end thereof a tapered inclining section 602.
  • the pin section 611 is formed in the vicinity of the contact section 614 in a length-wise direction L thereof with shoulders 603 protruding beyond an outer surface of the pin section 611.
  • the press-fit type connector terminal 600 illustrated in FIG. 36 is made from the metal plate 610 illustrated in FIGs. 44A and 44B .
  • the metal plate 610 includes a band-shaped first area 621 for forming the pin section 611, a substantially rectangular third area 623 for forming the contact section 614, continuous to a front end of the first area 621, having a width 623w greater than a width 621w of the first area 621, and having a plurality of slits 624 and pillars 623c both extending in a length-wise direction L of the first area 621.
  • the metal plate 610 further includes a fifth area 626 for forming the shoulders 603, continuous to the first area 621, and intersecting in T-shape with the first area 621.
  • the press-fit type connector terminal 600 illustrated in FIG. 36 is formed by pressing the metal plate 610 having a shape illustrated in FIGs. 44A and 44B , as follows.
  • the first area 621 is folded around a fold line 627 extending in a length-wise direction of the first areas 621 such that the first area 621 has a U-shaped cross-section.
  • the fifth area 626 is folded such that the fifth area 626 protrudes beyond the pin section 611.
  • the third area 623 is bent such that pillars 623c of the third area 623 are " ⁇ "-shaped to thereby cause the third area 623 to be in the form of a barrel surrounding the imaginary center line 614c.
  • the press-fit type connector terminal 600 is used in the same way and has the same functions as the press-fit type connector terminal 200 illustrated in FIG. 9 and the press-fit type connector terminal 400 illustrated in FIG. 22 , but is structurally different from the press-fit type connector terminals 200 and 400 in that the press-fit type connector terminal 600 does not include an inner shaft section.
  • the metal plate 610 illustrated in FIGs. 44A and 44B can be designed not to include an area for forming an inner shaft section, and accordingly, a size of the metal plate 610 from which the press-fit type connector terminal 600 is fabricated can be reduced, and further, it is possible to lighten the press-fit type connector terminal 600.
  • the press-fit type connector terminal 700 is formed by bending a single metal plate 710 having elasticity, illustrated in FIGs. 52A and 52B .
  • the press-fit type connector terminal 700 includes a pin section 711 having a U-shaped cross-section, and a contact section 714 continuous to a front end of the pin section 711.
  • the contact section 714 includes a contact piece 713 being in the form of a barrel surrounding an imaginary center line 714c extending in a length-wise direction L of the pin section 711, and a slit 701 extending on a surface of the contact piece 713 almost in parallel with the imaginary center line 714c.
  • an inner shaft section 712 having a U-shaped cross-section, in continuation with the contact piece 713.
  • the contact pieces 713 is formed at both distal and proximal ends thereof with C-shaped binders 615 and 616 surrounding the inner shaft section 712 substantially coaxial with the imaginary center line 714c.
  • the binder 715 situated at a front end of the contact piece 713 is designed to include at a distal end thereof a tapered inclining section 702.
  • the pin section 711 is formed in the vicinity of the contact section 714 in a length-wise direction L thereof with shoulders 703 protruding beyond outer surfaces of the pin section 711 and the contact section 714. As illustrated in FIG. 51 , a plurality of protrusions 704 protrudes towards the contact piece 713 from an outer surface of the inner shaft section 712.
  • the press-fit type connector terminal 700 illustrated in FIG. 45 is made from the metal plate 710 illustrated in FIGs. 52A and 52B .
  • the metal plate 710 includes a band-shaped first area 721 for forming the pin section 711, a substantially rectangular third area 723 for forming the contact section 714, continuous to a front end of the first area 721, and having a width greater than a width of the first area 721, and a band-shaped second area 725 for forming the inner shaft section 712, continuous to a front end of the third area 723, and having a width smaller than a width of the third area 723.
  • the metal plate 710 further includes a fifth area 726 for forming the shoulders 703, continuous to the first area 721, and intersecting in T-shape with the first area 721.
  • the second area 725 is formed at a center thereof with a fourth area 717 for forming the protrusions 704.
  • the fourth area 717 protrudes beyond the second area 725 in both a width-wise direction 725w and a thickness-wise direction 725t of the second area 725.
  • the press-fit type connector terminal 700 illustrated in FIG. 45 is formed by pressing the metal plate 710 having a shape illustrated in FIGs. 52A and 52B , as follows.
  • first area 721 and the second area 725 are folded around fold lines 727 and 728 extending in a length-wise direction of the first and second areas 721 and 725 such that the first and second areas 721 and 725 have a U-shaped cross-section to thereby form the pin section 711 and the inner shaft section 712.
  • the fifth area 726 is folded such that the fifth area 726 protrudes beyond the pin section 711.
  • the inner shaft section 712 made from the second area 715 is folded by 180 degrees around a fold line 729 towards the third area 723 to thereby cause the third area 723 to surround the inner shaft section 712 and to be in the form of a barrel having the slit 701 (see FIG. 45 ) located in facing relation with side edges 723a and 723b of the third area 723.
  • the press-fit type connector terminal 700 is used in the same way and has the same functions as the press-fit type connector terminal 400 illustrated in FIG. 21 and the press-fit type connector terminal 500 illustrated in FIG. 27 , but is structurally different from the press-fit type connector terminals 400 and 500 in that the contact section 714 of the press-fit type connector terminal 700 includes the contact piece 713 having a continuous shape without cut-lines except the slit 701.
  • the press-fit type connector terminal 700 it is possible to enlarge an area in which the contact section 714 makes contact with a through-hole formed through a printed circuit board, ensuring enhancement in contact reliability of the contact section 714 with a through-hole.
  • a shape of the contact section 714 is not to be limited to a barrel.
  • the contact section 714 may be designed to be in the form of a spindle outwardly protruding in a curved surface at a center in a length-wise direction of the imaginary center line 714c.
  • the press-fit type connector terminal 700 may be designed not to include the inner shaft section 712.
  • press-fit type connector terminals 100, 200, 300, 400, 500, 600 and 700 are just examples of the present invention.
  • the scope of the present invention is not to be limited to those examples.
  • the press-fit type connector terminal in accordance with the present invention can be broadly employed, for instance, in fields of electric/electronic industry and automobile industry as a connector to be inserted into a through-hole formed through a printed circuit board.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
EP13153883.7A 2012-03-15 2013-02-04 Druckeinpassbares Steckerendgerät Active EP2639887B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17153029.8A EP3206261A1 (de) 2012-03-15 2013-02-04 Einpressanschlussklemme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012058817A JP5445605B2 (ja) 2011-08-30 2012-03-15 プレスフィット用コネクタ端子

Related Child Applications (2)

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EP17153029.8A Division EP3206261A1 (de) 2012-03-15 2013-02-04 Einpressanschlussklemme
EP17153029.8A Division-Into EP3206261A1 (de) 2012-03-15 2013-02-04 Einpressanschlussklemme

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EP2639887A1 true EP2639887A1 (de) 2013-09-18
EP2639887B1 EP2639887B1 (de) 2017-07-26

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EP13153883.7A Active EP2639887B1 (de) 2012-03-15 2013-02-04 Druckeinpassbares Steckerendgerät

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Cited By (1)

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EP3185364A1 (de) * 2015-12-22 2017-06-28 Dai-Ichi Seiko Co., Ltd. Einpresskontakt

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CN103633469A (zh) * 2013-12-09 2014-03-12 丁振荣 汽车点烟器插头、双输入电源插头及手持电器
CN104124553A (zh) * 2014-07-24 2014-10-29 珠海格力电器股份有限公司 插片及具有其的印制电路板
JP2016100320A (ja) * 2014-11-26 2016-05-30 住友電装株式会社 接続端子
JP5839099B1 (ja) * 2014-12-03 2016-01-06 第一精工株式会社 プレスフィット用コネクタ端子
JP5871044B1 (ja) * 2014-12-05 2016-03-01 第一精工株式会社 端子モジュール
US10382659B2 (en) * 2016-07-05 2019-08-13 Hanwha Techwin Co., Ltd. Surveillance camera system
FR3086109B1 (fr) * 2018-09-14 2021-09-24 Safran Electronics & Defense Broche de connexion elastique, connecteur et dispositif electronique comportant de telles broches
CN112787123B (zh) * 2019-11-06 2022-11-22 华为技术有限公司 一种压接端子、信号接收模块及电子设备
CN111509440B (zh) 2020-04-24 2021-09-10 东莞立讯技术有限公司 一种连接器
US20210408708A1 (en) * 2020-06-26 2021-12-30 I-Pex Inc. Terminal
CN112615179A (zh) * 2020-12-10 2021-04-06 合肥中恒微半导体有限公司 一种鱼眼端子

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US4155321A (en) * 1976-10-18 1979-05-22 Bell Telephone Laboratories, Incorporated Method for making an interconnection pin for multilayer printed circuit boards
US4802862A (en) * 1981-03-30 1989-02-07 North American Specialties Corporation Solderable electrical contact
US4641910A (en) * 1981-08-24 1987-02-10 Rozmus John J Electrical contacts
US4908942A (en) * 1984-01-31 1990-03-20 Amp Incorporated Method of making an electrical terminal
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KR101898350B1 (ko) 2015-12-22 2018-10-04 다이-이치 세이코 가부시키가이샤 프레스 피트 단자
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Also Published As

Publication number Publication date
CN103311708A (zh) 2013-09-18
EP3206261A1 (de) 2017-08-16
EP2639887B1 (de) 2017-07-26
CN103311708B (zh) 2016-01-20

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