Source: https://patents.google.com/patent/JP5090509B2/en
Timestamp: 2020-05-26 07:50:22
Document Index: 995176

Matched Legal Cases: ['art 21', 'art 25', 'art 25', 'art 23', 'art 23', 'art 43', 'art 41', 'art 41', 'art 25', 'art 22', 'art) 40', 'art) 42']

JP5090509B2 - electrical connector - Google Patents
JP5090509B2
JP5090509B2 JP2010190698A JP2010190698A JP5090509B2 JP 5090509 B2 JP5090509 B2 JP 5090509B2 JP 2010190698 A JP2010190698 A JP 2010190698A JP 2010190698 A JP2010190698 A JP 2010190698A JP 5090509 B2 JP5090509 B2 JP 5090509B2
JP2010190698A
JP2012049015A (en
2010-08-27 Application filed by ヒロセ電機株式会社 filed Critical ヒロセ電機株式会社
2010-08-27 Priority to JP2010190698A priority Critical patent/JP5090509B2/en
2012-03-08 Publication of JP2012049015A publication Critical patent/JP2012049015A/en
2012-12-05 Publication of JP5090509B2 publication Critical patent/JP5090509B2/en
The present invention relates to an electrical connector having a terminal made of a metal plate, and in particular, a contact surface formed on a plate-like contact portion is brought into sliding contact with the mating contact portion of the mating terminal at the contact surface and brought to a contact position. The present invention relates to an electrical connector having terminals.
As such an electrical connector, a connector disclosed in Patent Document 1 is known.
The terminal of the connector of Patent Document 1 enters the groove portion of the mating contact portion that forms the forked shape of the mating terminal with the plate-shaped contact portion parallel to the plate surface. When the plate-like contact portion enters the groove portion of the mating contact portion, the groove portion is expanded in width and elastically deformed, and contact pressure with the contact portion is obtained by the elastic force.
Japanese Patent Laid-Open No. 5-217641
The connector may receive an inadvertent pulling direction force after mating with the mating connector.
In the connector of Patent Document 1, when the careless pulling-out direction force is received, the contact portion of the terminal counters only by the frictional force between the contact portion and the mating contact portion.
Therefore, when the pulling direction force is larger than the frictional force, the contact position between the contact portion and the mating contact portion may be shifted, resulting in poor contact, or even the mating contact portion may come off.
In view of such circumstances, the present invention increases the force against the force even if an inadvertent pulling direction force acts to prevent displacement of the contact position with the mating contact portion and withdrawal of the mating contact portion. It is an object of the present invention to provide an electrical connector.
The electrical connector according to the present invention has a housing and a plurality of terminals made of a metal plate held by the housing, and the terminals include a contact portion that contacts the mating terminal, and a connection portion that is connected to the circuit board. The contact portion is formed by extending the contact surface in sliding contact with the mating terminal in the connector fitting direction, and the plurality of terminals have adjacent terminals and contact surfaces parallel to each other. Are arranged to form
In such an electrical connector, in the present invention, when the contact portion reaches a predetermined contact position with the mating contact portion of the mating terminal, a stepped shape in which a part of the mating contact portion is locked in the connector extraction direction. The engaging portion is provided adjacent to the contact surface.
In the present invention having such a configuration, at the time of connector fitting, a part of the mating contact portion of the mating terminal slides on the contact surface of the terminal and reaches a predetermined contact position. At that time, a part of the mating contact portion gets over the stepped locking portion provided adjacent to the contact surface and reaches the predetermined contact position.
Thus, when an inadvertent pulling direction force is applied to the mating terminal at the predetermined contact position, the stepped locking portion formed adjacent to the contact surface of the terminal and a part of the mating contact portion are Since they are engaged with each other in the extraction direction, the mating terminal is prevented from coming off.
In the present invention, the locking portion can be the edge of the stepped recess where the tip of the contact portion of the mating terminal is locked.
Furthermore, in the present invention, it is preferable that the contact portion is formed on the plate surfaces on both sides of the terminal, and the locking portion is provided on both contact surfaces. By doing so, the contact pressure of the mating contact portion acts as a pinching pressure on both contact surfaces, and the locking at the locking portion becomes more reliable with the pinching pressure.
In the present invention, as described above, since the stepped locking portion is provided adjacent to the contact surface of the contact portion of the plate-like terminal, a part of the mating contact portion is stepped in the extraction direction. Therefore, the connector is prevented from being unintentionally pulled out.
It is a perspective view which shows the state just before fitting of the 1st connector which concerns on this invention, and a 2nd connector. FIG. 2 is a perspective view showing the first connector of FIG. 1 in an upside down position. It is sectional drawing in the terminal position of the 1st connector of the attitude | position of FIG. It is a perspective view which takes out and shows only one pair of the 1st terminal of the 1st connector and the 2nd terminal of the 2nd connector in the attitude | position of FIG. It is sectional drawing in the position of the mutual contact part in the terminal extension direction about the 1st terminal of FIG. 4, and the 2nd terminal currently hold | maintained at the 2nd housing. It is a modification shown with the cross section in the position corresponding to FIG. It is a perspective view which shows the modification about a 1st connector. It is a perspective view which takes out and shows only one pair of the 1st terminal and 2nd terminal in FIG.
In this embodiment, as shown in FIG. 1, a plug connector (hereinafter referred to as “first connector”) 10 and a receptacle connector (hereinafter referred to as “second connector”) 30 which are fitted and connected to each other are provided. . Both connectors 10 and 30 are attached to corresponding circuit boards, and are fitted in a posture in which the faces of the circuit boards are parallel to each other and the attachment faces of the connectors are opposed to each other. Therefore, in the state of FIG. 1 showing just before the connector fitting, the first connector 10 is located on the lower surface side of the corresponding circuit board, and the second connector 30 is located on the upper surface side of the corresponding circuit board, facing each other. Yes.
The first connector 10 has a substantially H-shaped planar shape as can be seen in FIG. 2 showing only the first connector 10 in a posture in which the vertical direction is reversed with respect to the posture of FIG. The first terminal 20 is held by the first housing 11 that extends toward both sides.
The first housing 11 is made of an electrically insulating material, and has a rod-like terminal holding portion 11A that extends long and has a quadrangular cross section, and a metal fitting holding portion 11B that extends to both sides at both longitudinal ends of the terminal holding portion 11A. As a whole, the planar shape is H-shaped.
The plurality of first terminals 20 held by the first housing 11 are arranged at regular intervals in the longitudinal direction on both sides of the terminal holding portion 11A of the first housing 11 as seen in FIG. . In the present embodiment, the first terminals 20 arranged on both sides have the same shape and are arranged symmetrically with respect to the terminal holding portion 11A. The first terminal 20 is obtained by externally processing a metal plate by punching or the like and performing a process of immersing a part of the plate surface. FIG. 2 shows an appearance of the plurality of first terminals 20 held by the first housing 11 exposed outside the first housing 11, and FIG. 3 shows two first terminals held symmetrically by the first housing 11. FIG. 4 shows the appearance of only one first terminal 20 together with the second terminal 40 in the same posture as FIG. The first terminal 20 holds the terminal of the first housing 11 in such a manner that the outer shape viewed in the direction perpendicular to the plate surface (terminal arrangement direction) is parallel to the surface of the circuit board to which the first connector 10 is to be attached. It has a horizontally long shape extending sideways in a direction away from the portion 11A. The first terminal 20 has three regions divided in this direction. As shown in FIG. 3, these three regions are the first held portion 21 held by the first housing 11 by integral molding with the first housing 11, and the outside of the first housing 11. A first contact portion 22 for contacting the second terminal 40 of the second connector 30 and a first connection portion 23 extending from the first contact portion 22 for connection to a circuit board. There is a transition portion 24 that is slightly inclined between the first contact portion 22 and the first connection portion 23, but this transition portion 24 can be omitted. That is, in the lateral direction as the terminal extending direction, the first held portion 21, the first contact portion 22, and the first connecting portion 23 are sequentially formed without overlapping each other. And in the 1st terminal 20 in this embodiment, the 1st to-be-held part 21 hold | maintained by the said 1st housing 11 is a connector fitting (and extraction) direction, ie, a height (up-down) direction in a figure. It is located in the range of the first contact portion 22. As can be understood well in FIG. 3, the first held portion 21 is formed so as to protrude laterally from the first contact portion 22 within the height range of the first contact portion 22, and the upper edge is formed. The linear portion 21A and the lower edge form a corrugated portion 21B. The first held portion 21 is integrally molded with both the plate surfaces and the peripheral surface including the upper edge and the lower edge in a state of being in full contact with the terminal holding portion 11A of the first housing 11. Yes. Therefore, the first held portion 21 is in full contact with the material of the terminal holding portion 11A despite having only dimensions within the height range of the first contact portion 22. Combined with the fact that the lower edge forms the corrugated portion 21B, the terminal is firmly held by the terminal holding portion 11A of the first housing 11 and further has a resistance against an external force in the pulling direction to the side. It is increasing.
As shown in FIGS. 1, 2, and 4, the first contacted portion 22 is formed with a stepped recess 25 in which the terminal plate surface is subjected to an immersion process. 4, the step-like recess 25 is open to the upper edge side of the first contact portion 22 in FIG. 4 and forms a rectangular region having step-like edge portions on the other three sides. The flat bottom surface forms a contact surface 25A with the second terminal as a counterpart. And the step part of the lower edge of this step-shaped recessed part 25 in FIG. 4 forms the latching | locking part 25B which latches with the said 2nd terminal. Below the locking portion 25B is an introduction portion 26 having a tapered surface for starting contact with the second terminal. The contact surface 25A, the locking portion 25B and the introduction portion 26 form the first contact portion 22. To do.
As shown in FIGS. 2 and 3, the first connection portion 23 extends in the lateral direction through a transition portion 24 that slightly inclines downward in a direction away from the terminal holding portion 11 </ b> A of the first housing 11. . In the present embodiment, the first connecting portion 23 is overlapped with the first contact portion 22 in the height direction which is the connector fitting direction. When the first connector 10 is disposed on the circuit board, the first connection part 23 is soldered in a state of being in contact with the circuit part of the circuit board. Therefore, since the lower edge of the first connection portion 23 needs to be located at the same level as the bottom surface of the first housing 11 or slightly below, the transition portion inclined from the first contact portion 22 as described above. 24 and located below. However, the lower edge of the first contact portion 22 may be positioned lower than the example shown in FIG. 3 and near the bottom surface of the first housing 11, or slightly above the lower edge of the first connection portion 23. It is enough to be located at. In that case, most of the first connecting portion 23 falls within the range of the first contact portion 22 in the height direction, and the height dimension of the first contact portion 22, that is, the counterpart It is also possible to ensure a large contact length with the second terminal.
Mounting brackets 27 are held on the bracket holding portions 11 </ b> B at both ends of the first housing 11. Similar to the first terminal 20, the mounting bracket 27 is also held by the first housing 11 by integral molding with the first housing 11. The mounting bracket 27 extends laterally from the bracket holding portion 11B, and the extended leg-shaped mounting portion 27A is in the height direction, and the lower edge thereof is the first connection portion 23 of the first terminal 20. Similar to the first connection portion 23, it is attached to the corresponding attachment portion of the circuit board by soldering.
The second connector 30 that is fitted and connected to the first connector 10 having such a configuration is a rectangular flat plate-like second as a whole as seen in FIG. 1 together with the first connector 10 immediately before the fitting. The housing 31 holds the second terminals 40 in an array.
Similar to the first housing 11 of the first connector 10, the second housing 31 of the second connector 30 is made of an electrically insulating material and also receives the first housing 11 and the first terminal 20 of the first connector 10. A receiving recess 32 is formed. The receiving recess 32 has a central recess 33 extending in the longitudinal direction so as to receive the terminal holding portion 11A of the first housing 11, and a metal fixture holding portion 11B of the first housing 11 extending in the short direction from both longitudinal ends thereof. An end recess 34 for receiving the first contact portion 22 and the first connection portion 23 of the first terminal 20 of the first connector 10 extending from both sides of the central recess 33 in a comb shape. And a plurality of branched terminal recesses 35. The central concave portion 33 and the end concave portion 34 have concave inner surface shapes that match the outer shapes of the terminal holding portion 11A and the metal fitting holding portion 11B of the first connector 10 that is the receiving counterpart.
As shown in FIG. 1, the terminal recess 35 has a groove width in a direction perpendicular to the extending direction of the first terminal 20 (between the opposing inner surfaces of the terminal recess 35 when viewed from above). The distance is different depending on the position in the extending direction. The groove width of the terminal recess 35 is narrow in a range corresponding to the first contact portion 22 of the first terminal 20 in the extending direction and wide in a range corresponding to the first connection portion 23. In the range corresponding to the first contact portion 22, the plate-like first contact portion 22 enters into the terminal recess 35, so that the width corresponding to that, that is, the plate of the first contact portion 22 that enters. A terminal groove 35A having a sufficient groove width with respect to the thickness and a groove width capable of guiding the entrance thereof and having a tapered surface 35A-1 at the upper edge of the inlet is formed. On the other hand, since the first connection part 23 and the solder of the first terminal 20 enter the range beyond the terminal extending direction, the width becomes wider.
The planar shape of the terminal recess 35 is as described above. However, since the cross-sectional shape of the surface extending in the fitting direction and the terminal arrangement direction is related to the second terminal 40, after the description of the second terminal 40. I will explain it again.
As shown in FIG. 4, the second terminal 40 is formed by externally forming a metal plate and bending in the plate thickness direction. The first contact portion 22 of the first terminal 20 is received in a direction perpendicular to the plate thickness surface. The second terminal 40 extending in the lateral direction has a second held portion 41 at an intermediate portion in the extending direction, and corresponds to the first contact portion 22 of the first terminal 20 on one side thereof. A second contact portion 42 is provided at one end portion, and a second connection portion 43 is provided at the other end portion.
The second held portion 41 is formed wide so that it can be inserted and held in a holding hole, which will be described later, of the second housing 31. A bifurcated second contact portion 42 extends from the second held portion 41 to one end side through a constricted portion. The second contact portion 42 has a groove portion 42A having a planar fork shape that opens toward one end, and has two contact pieces 44 facing each other. Both contact pieces 44 have a distance between the opposing inner edges, that is, a groove width that narrows toward a free end that is one end (tip), and a tapered portion 44A is formed at the upper edge portion toward the inside of the groove. At the tip, a rounded contact protrusion 44B is formed so as to protrude in the proximity direction of each other. The distance between the contact protrusions 44B is slightly larger than the distance between the contact surfaces 25A of the stepped recesses 25 on both sides formed in the first contact portion 22 of the first terminal 20, that is, the plate thickness at the contact surface 25A. small. The two contact protrusions 44B facing each other are located in the range of the corresponding contact surface 25A in the extending direction of the terminal as seen in FIG.
The second connection part 43 forms a plane parallel to the second held part 41 after being bent in a crank shape downward in the plate thickness direction with respect to the second held part 41.
As shown in FIG. 1, such a second terminal 40 has a second contact portion 42 located in the groove-like terminal recess 35 of the second housing 31 and a second connection portion 43 second. It is located so as to extend out of the housing 31, and is held by the holding hole 36 of the second housing 31 by the second held portion 41. The holding hole 36 communicates with the terminal recess 35 and opens in a window shape on the side surface of the second housing 31. When the second terminal 40 is inserted into the holding hole 36 from the second contact portion 42 side through the opening, the second contact portion 42 reaches the terminal concave portion 35 and the second held portion 41 becomes the holding hole 36. The second connection portion 43 is positioned outside the second housing 31. In the terminal recess 35, a terminal groove 35A located on the central recess 33 side is formed with a groove width slightly larger than the plate thickness of the first contact portion 22 of the first terminal 20, and a groove edge protruding portion 35B is formed. It has a shape that protrudes inward of the groove. A regulation groove 37 is formed immediately below the groove edge projecting portion 35 </ b> B by extending the inner width of the holding hole 36 as it is to a position communicating with the central recess 33. As shown in FIG. 5, the restriction groove 37 is formed on the inner surface side of the terminal groove 35 </ b> A penetrating vertically in the fitting direction so as to open to the terminal groove 35 </ b> A. The outer edge portion 44C of the two contact pieces 44 forming the contact portion 42 is accommodated.
As shown in FIG. 5, the inner surface of the restriction groove 37 forms a surface inclined upward toward the terminal groove 35 </ b> A, and the contact piece 44 of the second contact portion 42 of the flat second terminal 40. A restricting portion 37A is formed that abuts against the upper surface and restricts the contact piece 44 from being displaced upward. Therefore, the upper surface of the contact piece 44 that faces this forms a regulated portion 44D that is regulated by the regulating portion 37A. The restricting portion 37A and the restricted portion 44D form an action portion that abuts with each other. In the action portion, the restriction portion 37A is inclined so that the width of the groove portion 42A of the second terminal 40 is reduced. A component force is generated.
Next, the usage point and the operating principle of both connectors of this embodiment will be described.
First, the first connector 10 and the second connector 30 are respectively connected and attached to the corresponding circuit boards. In FIG. 1, which shows the connector 10 and 30 just before fitting, the circuit board is not shown. However, as described above, the corresponding circuit board is provided on the upper surface side of the first connector 10 and the second connector 30. Corresponding circuit boards are respectively located on the lower surface side of each other and are in a posture to face each other. That is, with respect to the first connector 10, the first connector 10 in the posture shown in FIGS. 2 and 3 is arranged on the circuit board, connected to and attached to the circuit board, and then the upper and lower surfaces of the circuit board are reversed. Then, take the posture shown in FIG.
The first connector 10 attached to the circuit board is lowered at the position and posture of FIG. At the time of fitting, the first housing 11 of the first connector 10 is received by the receiving recess 32 of the second housing 31 of the second connector 30 by being invited by the tapered surface () of the groove edge projecting portion 35B. The first contact portion 22 of the first terminal 20 enters the terminal recess 35 while being guided by the terminal groove 35A of the second housing 31 through the tapered surface 35A-1. As shown in FIG. 5, in the terminal groove 35 </ b> A, the contact protrusion 44 of the contact piece 44 of the second connector 30 in which the outer edge portion 44 </ b> C is housed in the restriction groove 37 formed in the inner surface of the opposing groove. The portion 44 </ b> B has entered, and a groove portion 42 </ b> A formed between the contact pieces 44 is positioned immediately below the first contact portion 22 of the first terminal 20. The lower end portion of the first contact portion 22 is an introduction portion 26 having a tapered surface, and the first contact portion 22 is a taper formed on the upper edge of the groove portion 42 </ b> A of the contact piece 44. While being guided by the portion 44A, the contact piece 44 is elastically displaced so as to be expanded by the contact protrusion 44B, thereby widening the groove width of the groove portion 42A. Further, when the first contact portion 22 enters the groove portion 42A, the introduction portion 26 passes through the position of the contact protrusion 44B, and the stepped recess 25 comes into contact with the contact protrusion 44B. . That is, when viewed from the contact protrusion 44B, the contact protrusion 44B moves relative to the first contact portion 22, gets over the introduction portion 26, passes through the stepped locking portion 25B, The flat contact surface 25A is reached. And the said contact protrusion 44B reduces the amount of elastic displacement by the part of the level | step difference in the latching | locking part 25B, and maintains the contact state with the said contact surface 25A with a predetermined contact pressure.
Thus, after the first connector 10 is fitted and connected to the second connector 30, when an inadvertent pulling direction force acts on the first connector 10, the first contact portion 22 of the first connector 10. The stepped locking portion 25B and the contact protrusion 44B of the second connector 30 are locked to each other in the above-described extraction direction to prevent them from coming off. When the pull-out direction force is unexpectedly large, the locking portion 25B elastically displaces the contact protrusion 44B upward, and tries to come off from the locking. However, in the present invention, a tapered restriction portion 37A is formed on the inner surface of the restriction groove 37 of the second housing 31 and the upper surface of the contact piece 44 of the second contact portion 42 faces the restriction portion 37A. A regulated portion 44D is formed. Therefore, even if the contact piece 44 receives the pulling direction force via the locking portion 25B and elastically displaces upward, the regulated portion 44D comes into contact with the regulating portion 37A before the locking is released, The two contact pieces 44 are elastically displaced in the direction of reducing the groove width of the groove portion 42A by the lateral component of the reaction force from the tapered surface of the restricting portion 37A, and the contact protrusions 44B of the two contact pieces 44 Increases the clamping force on the contact surfaces 25A on both sides of the first contact portion 22 further. As a result, the first contact portion 22 can no longer move in the extraction direction, and therefore, the locking with the contact protrusion 44B at the stepped locking portion 25B is not released.
The present invention is not limited to the form shown in FIGS. 1 to 5 and can be variously modified.
For example, the restricting portion 37A of the second housing 31 and the restricted portion 44D of the second terminal 40 in the second connector 30 can be seen in FIG. 6 without the restricting portion 37A having a tapered surface as shown in FIG. In addition, the restricting portion 37A can be a horizontal flat surface and the restricted portion 44D can be a tapered surface. Of course, although not shown, both the restricting portion and the restricted portion may be tapered surfaces. Furthermore, the restricting portion and the restricted portion can be formed by curved surfaces where at least the abutting portions thereof are inclined, instead of a tapered surface having a linear inclination.
Next, the locking portion 25B provided on the first terminal 20 of the first connector 10 is not the stepped edge of the stepped recess 25 as shown in FIGS. The locking portion 25B formed as a protrusion may be used. As shown in FIG. 8, the contact protrusion 44B of the second terminal 40 of the second connector 30 gets over the locking portion 25B formed as this protrusion and locks with the locking portion 25B, so that the connector is disconnected. Prevent it.
DESCRIPTION OF SYMBOLS 11 Housing (1st housing) 25A Contact surface 20 Terminal (1st terminal) 25B Locking part 22 Contact part (1st contact part) 40 Opposite terminal (2nd terminal)
23 connection part (first connection part) 42 partner contact part (second contact part)
A housing and a plurality of terminals made of a metal plate held by the housing, wherein the terminals form a flat plate with a contact portion that contacts the mating terminal and a connection portion connected to the circuit board; The contact portion is formed such that the contact surface that is in sliding contact with the mating terminal extends in the connector fitting direction, and the plurality of terminals are arranged so that the contact surfaces are parallel to adjacent terminals. In electrical connectors,
When the contact portion reaches a predetermined contact position with the mating contact portion of the mating terminal, a stepped locking portion that is locked by a part of the mating contact portion in the connector pulling direction is adjacent to the contact surface. An electrical connector characterized by being provided.
The electrical connector according to claim 1, wherein the locking portion is an edge portion of a stepped recess that locks the tip of the contact portion of the mating terminal.
The electrical connector according to claim 1, wherein the contact portion has contact surfaces formed on plate surfaces on both sides of the terminal, and a locking portion is provided on both contact surfaces.
JP2010190698A 2010-08-27 2010-08-27 electrical connector Active JP5090509B2 (en)
JP2010190698A JP5090509B2 (en) 2010-08-27 2010-08-27 electrical connector
KR1020110051125A KR101355429B1 (en) 2010-08-27 2011-05-30 Electric connector
CN201110169114.5A CN102403595B (en) 2010-08-27 2011-06-17 Electrical connector
US13/210,834 US8475184B2 (en) 2010-08-27 2011-08-16 Electrical connector
JP2012049015A JP2012049015A (en) 2012-03-08
JP5090509B2 true JP5090509B2 (en) 2012-12-05
ID=45697852
JP2010190698A Active JP5090509B2 (en) 2010-08-27 2010-08-27 electrical connector
US (1) US8475184B2 (en)
JP (1) JP5090509B2 (en)
KR (1) KR101355429B1 (en)
CN (1) CN102403595B (en)
DE102012223017A1 (en) * 2012-12-13 2014-06-18 Robert Bosch Gmbh Electrical plug connection with a plug and a socket
JP5298249B1 (en) * 2013-01-18 2013-09-25 株式会社竹内技術研究所 Inter-board connector socket and inter-board connector
JP6339541B2 (en) * 2015-09-15 2018-06-06 ヒロセ電機株式会社 Electrical connector and electrical connector assembly
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JP2010050025A (en) * 2008-08-25 2010-03-04 Yazaki Corp Engagement structure for connector
JP5259658B2 (en) * 2010-08-27 2013-08-07 ヒロセ電機株式会社 Electrical connector
2010-08-27 JP JP2010190698A patent/JP5090509B2/en active Active
2011-05-30 KR KR1020110051125A patent/KR101355429B1/en active IP Right Grant
2011-06-17 CN CN201110169114.5A patent/CN102403595B/en active IP Right Grant
2011-08-16 US US13/210,834 patent/US8475184B2/en active Active
KR101355429B1 (en) 2014-01-27
JP2012049015A (en) 2012-03-08
US20120052711A1 (en) 2012-03-01
CN102403595B (en) 2014-10-15
KR20120020047A (en) 2012-03-07
US8475184B2 (en) 2013-07-02
CN102403595A (en) 2012-04-04
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