JP5713713B2 - LED connector - Google Patents

Description

  The present invention relates to an LED connector connected to an LED module.

  LED modules having LEDs (Light Emitting Diodes) that have lower power consumption and longer life than conventional incandescent bulbs and fluorescent tubes have begun to be used in, for example, lighting devices and display devices. Patent Document 1 discloses an LED connector that is connected to such an LED module. This LED connector includes a pair of so-called poke-in contacts, and a pair of electric wires with core wires exposed at the ends are inserted in opposite directions to the poke-in contacts, and are connected without soldering and without pressure bonding.

JP 2009-176733 A

  Since the LED connector shown in Patent Document 1 is connected to only one electric wire for each of the positive electrode and the negative electrode, a configuration in which a plurality of LED modules are arranged side by side and electrically connected in parallel (daisy chain) cannot be constructed.

  An object of the present invention is to solve the above problems and provide an LED connector capable of daisy chain connecting a plurality of LED modules.

The LED connector of the present invention that achieves the above object is an LED connector that has a light emitting part and fixes an LED module having a pair of contact pads for supplying power to the light emitting part on a table,
A housing for housing the LED module between the base and a hole in which the light emitting unit is exposed;
A pair of contacts having contact arms housed in the housing and contacting each one of the pair of contact pads;
Each of the pair of contacts has a pair of wire insertion openings into which two wires are inserted in opposite directions at both ends in a direction intersecting the direction in which the pair of contacts are arranged. A pair of connection portions for connecting to each of the two inserted electric wires are integrally formed with the contact arm.

  In the LED connector of the present invention, two electric wires are connected to each contact. A pair of electric wire insertion openings into which electric wires are inserted are provided at both ends in a direction intersecting with the direction in which the pair of contacts are arranged, and the two electric wires are inserted in directions opposite to each other. For this reason, a total of four electric wires connected to a pair of contacts are arranged in two substantially parallel rows. Accordingly, it is possible to extend the wires arranged in two rows via the plurality of LED connectors so that the plurality of LED modules can be daisy-chain connected.

Here, in the LED connector of the present invention, the pair of contact pads are arranged at symmetrical positions around the light emitting part,
It is preferable that the pair of contacts have the same shape and are arranged at symmetrical positions with the light emitting portion as the center.

  Since both the pair of contacts are manufactured in the same process, the manufacturing cost and management cost of the contacts are reduced.

  Here, in the LED connector of the present invention, it is preferable that each of the pair of contacts has a pair of retaining pieces that respectively retain the two electric wires inserted from the pair of electric wire insertion ports. .

  Since the wiring work for daisy chain connection is completed simply by inserting the electric wire into the wire insertion port of the LED connector, the labor for constructing the structure of the daisy chain connection is reduced.

  In the LED connector of the present invention, each of the pair of contacts has a press-fitting portion for press-fitting the contact into the housing in the vicinity of one of the pair of electric wire insertion openings. The contact arm has a shape extending from the press-fit portion toward the mating contact of the pair of contacts, and further extending in a direction connecting the pair of wire insertion openings and in a direction approaching the LED module, It is preferable that the portion elastically contacts the contact pad.

  In addition to the pair of wire insertion ports, a press-fitting portion for press-fitting into the housing and a contact arm that contacts the contact pad are formed integrally with the contact, so that the number of parts of the LED connector is reduced.

Further, in the LED connector of the present invention, each of the pair of contacts is an opening that exposes the ends of the two electric wires inserted from the pair of electric wire insertion ports at the central portion of the pair of electric wire insertion ports. Have
The housing preferably has a viewing window that communicates with the opening of each of the pair of contacts and visually recognizes the distal end portion of the electric wire inserted into each of the pair of contacts.

  Through the viewing window of the housing, it can be confirmed whether or not the two electric wires connected to each contact have been completely inserted from the electric wire insertion port.

  As described above, according to the present invention, an LED connector capable of connecting a plurality of LED modules in a daisy chain is realized.

It is a perspective view which shows the LED connector assembly provided with the LED connector which is one Embodiment of this invention. FIG. 2 is an exploded perspective view of a part of the LED connector assembly shown in FIG. 1. FIG. 3 is an exploded perspective view of the LED connector shown in FIG. 2. FIG. 4 is a partial cross-sectional view showing a part of the contact shown in FIG. It is a top view which shows the state by which the electric wire was connected to the LED connector. FIG. 6 is a cross-sectional view showing a cross section taken along line 6-6 of the LED connector shown in FIG. It is sectional drawing which shows the cross section in the 7-7 line | wire of the LED connector shown in FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing an LED connector assembly including an LED connector according to an embodiment of the present invention.

  The LED connector assembly S is, for example, a lighting device. In the LED connector assembly S, a plurality of LED modules 1 are arranged in a line. FIG. 1 shows a portion of the LED connector assembly S where two LED modules 1 are arranged.

  The LED connector assembly S shown in FIG. 1 includes an LED connector 2, a heat sink 3, electric wires 41, 42, 43, 44, 45, 46, and screws 5 in addition to the LED module 1 described above.

  The two LED modules 1 shown in FIG. 1 have the same configuration as each other, and the two LED connectors 2 have the same configuration as each other. On the other hand, about the electric wire, another code | symbol is attached | subjected in order to distinguish each electric wire.

  The heat sink 3 is a base made of, for example, a metal material typified by aluminum or a ceramic material, and the LED module 1 is attached to the heat sink 3. The heat sink 3 supports the entire structure of the LED connector assembly S. The LED connector 2 and the LED module 1 are arranged on the mounting surface 3a of the heat sink 3, that is, the upper surface in the figure. The heat sink 3 conducts heat from the LED module 1 and dissipates it to the outside. The heat sink 3 shown in FIG. 1 has a rectangular parallelepiped shape that extends long. As the shape of the heat sink 3, other than a rectangular parallelepiped can be adopted. For example, a shape in which cooling fins for improving heat dissipation performance are provided on the opposite side of the surface on which the LED module 1 is attached can be employed.

  The LED connector 2 is a member that fixes the LED module 1 on the heat sink 3 and electrically couples the electric wires 41 to 46 and the LED module 1. The LED connector 2 is accommodated so that the LED module 1 is sandwiched between the LED connector 2 and the screw module 5, and is fixed to the mounting surface 3 a of the heat sink 3, that is, the upper surface of FIG.

  The electric wires 41 to 46 are for supplying electric power to the LED module 1, and include negative electric wires 41 to 43 for supplying a negative voltage and positive electric wires 44 to 46 for supplying a positive voltage. The plurality of LED modules 1 in the LED connector assembly S are electrically connected in parallel. Each of the negative electrode wires 41 to 43 and the positive electrode wires 44 to 46 is arranged so as to extend in two rows while being relayed by the LED connector 2. Note that the overall shape of the LED connector assembly S is not limited to the shape in which the LED modules 1 as shown in the figure are arranged in a straight line. For the LED connector assembly, it is also possible to adopt a shape in which an electric wire is bent in the middle and a plurality of LED modules are arranged side by side on a bent path.

  In the LED connector assembly S and the LED connector 2 shown in FIG. 1, the direction in which the wires 41 to 46 extend from the LED connector 2 is referred to as a vertical direction X, and is parallel to the mounting surface 3a of the heat sink 3 and perpendicular to the vertical direction X Is referred to as the transverse direction Y. A direction perpendicular to the mounting surface 3a, that is, a direction perpendicular to both the longitudinal direction X and the lateral direction Y is referred to as a height direction Z.

  FIG. 2 is a partial exploded perspective view of the LED connector assembly S shown in FIG. FIG. 2 shows the two LED modules 1 and the two LED connectors 2 shown in FIG. 1 arranged on the lower left side in FIG.

  The LED module 1 includes a light emitting unit 11 and a substrate 12 as shown in FIG. The substrate 12 is a plate made of insulating resin or ceramic, or aluminum coated with insulating coating. The light emitting unit 11 is provided on the substrate 12. More specifically, the light emitting unit 11 is obtained by sealing an LED element (not shown) placed on the substrate 12 with a light transmissive resin. The substrate 12 of the present embodiment has a rectangular plate shape, and the light emitting unit 11 has a disk shape with the center swelled. A pair of contact pads 13 and 14 for supplying power to the light emitting unit 11 are provided on the substrate 12. The pair of contact pads 13 and 14 are provided on both sides of the light emitting unit 11, and specifically, are provided at symmetrical positions with the light emitting unit 11 as the center. More specifically, the pair of contact pads 13 and 14 are arranged near the diagonal of the rectangular substrate 12. One contact pad 13 is connected to the anode of the LED element, and the other contact pad 14 is connected to the cathode.

  The mounting surface 3a of the heat sink 3 that contacts the LED module 1 is planar. A hole 31 into which the screw 5 is screwed is formed in the heat sink 3.

  The LED connector 2 includes a housing 21 and a pair of contacts 22 and 23.

  The housing 21 is a molded product made of an insulating resin material and has a rectangular plate-like schematic shape. A housing recess 211 for housing the LED module 1 is formed on the lower surface 21 a of the housing 21 facing the heat sink 3. An exposure window 212 that exposes the light emitting unit 11 of the LED module 1 is formed in the central portion of the housing recess 211. The exposure window 212 is a hole that penetrates to the upper surface 21 b of the housing 21. The housing recess 211 is formed into a shape into which the substrate 12 of the LED module 1 is inserted, and the exposure window 212 is formed into a shape into which the light emitting unit 11 of the LED module 1 is inserted. More specifically, the exposure window 212 is substantially circular, and the housing recess 211 is rectangular as shown in FIG. In the state where the LED connector 2 is attached to the heat sink 3, that is, the state shown in FIG. 1, the LED module 1 is housed in the housing recess 211 (see FIG. 2), and the light emitting portion 11 (see FIG. 2) of the LED module 1 is exposed. It is exposed from the window 212 (see FIG. 2).

  As shown in FIG. 2, the contacts 22 and 23 are accommodated in the housing 21. Since the contacts 22 and 23 have the same shape, they are manufactured in the same process. The contacts 22 and 23 are arranged in the horizontal direction Y and are arranged on both sides of the LED module 1. More specifically, the pair of contacts 22 and 23 are arranged at symmetrical positions around the light emitting unit 11 of the LED module 1 and arranged in the opposite direction with respect to the vertical direction X. The contacts 22 and 23 are in contact with the contact pads 14 and 13 of the LED module 1 in the state shown in FIG. One contact 22 is connected to both negative electrode wires 41 and 42 inserted in opposite directions with respect to the housing 21. The other contact 23 is connected to both the positive electrode wires 44 and 45 inserted in opposite directions with respect to the housing 21. The core wires 411, 421, 441, 451 are exposed at the ends of the negative electrode wires 41, 42 and the positive electrode wires 44, 45, respectively. Core wires 411, 421, 441, 451 are connected to the contacts 22, 23.

  FIG. 3 is an exploded perspective view of the LED connector shown in FIG. FIG. 3 shows a state in which the contacts 22 and 23 are separated from the housing 21. FIG. 4 is a partial cross-sectional view showing a part of the contact shown in FIG.

  Since the contacts 22 and 23 have the same shape, one contact 23 will be described as a representative.

  The contact 23 has a pair of electric wire insertion portions 230 a and 230 b, a press-fit portion 232, and a contact arm 233. The contact 23 is formed by punching and bending a metal plate, and the wire insertion portions 230a and 230b, the press-fit portion 232, and the contact arm 233 are integrally formed. For this reason, the number of parts and the number of manufacturing steps of the LED connector 2 (see FIG. 1) are suppressed.

  Each of the electric wire insertion portions 230a and 230b is formed in a cylindrical shape extending in the vertical direction X. The electric wire insertion portions 230a and 230b are arranged in the longitudinal direction X, that is, in the direction in which the cylinder extends. Electric wire insertion openings 231a and 231b into which electric wires are inserted are opened at the outer ends of the cylindrical electric wire insertion portions 230a and 230b, respectively. In addition, the cross section which cut | disconnected the electric wire insertion part 230a, 230b along the vertical direction X is shown by FIG. Two electric wires 44 and 45 (see FIG. 2) are inserted into the electric wire insertion portions 230a and 230b in opposite directions from the electric wire insertion ports 231a and 231b, respectively. Further, a visual recognition opening 231c is opened at a portion between the electric wire insertion portions 230a and 230b, that is, at the center of the two electric wire insertion ports 231a and 231b. The core wires 441 and 451 (see FIG. 2) of the two electric wires 44 and 45 are inserted into the two electric wire insertion portions 230a and 230b in opposite directions from the electric wire insertion ports 231a and 231b, respectively. The contact 23 has a so-called poke-in contact function in two directions. Specifically, the wire insertion portions 230a and 230b are respectively provided with retaining pieces (lances) 234 and 235, respectively. Each of the retaining pieces 234, 235 has a section formed in a part of the wire insertion portions 230a, 230b facing the back as viewed from the wire insertion openings 231a, 231b inside the cylindrical wire insertion portions 230a, 230b. Projecting diagonally. The edges of the tips of the retaining pieces 234 and 235 are formed at an acute angle. The retaining pieces 234 and 235 are hooked on the core wires 441 and 451 (see FIG. 2) of the electric wires 44 and 45 inserted in the electric wire insertion portions 230a and 230b, and prevent the electric wires 44 and 45 from coming off.

  The press-fit portion 232 is a portion that continues from the one electric wire insertion portion 230b and is provided in the vicinity of the electric wire insertion port 231b.

  The contact arm 233 is a portion that further extends from the opposite side of the press-fit portion 232 to the wire insertion portion 230b. The contact arm 233 has a first portion 233a and a second portion 233b. The first portion 233 a is a portion extending from the press-fit portion 232 toward the other contact 22 side in a state where the contacts 22 and 23 are accommodated in the housing 21. The second portion 233b is a portion extending further from the first portion 233a in the longitudinal direction X connecting the pair of wire insertion openings 231a and 231b and approaching the LED module 1 (see FIG. 2). The tip end portion 233c of the second portion 233b of the contact arm 233 contacts the contact pad 13 (see FIG. 2) of the LED module 1.

  Contact housing holes 213a and 214a are provided on both sides in the lateral direction Y of the housing recess 211 of the housing 21 shown in FIG. One contact receiving hole 213a extends in the vertical direction X, and guide grooves 213b and 213c opened to the upper surface 21b extend further from both ends of the contact receiving hole 213a. The other contact accommodation hole 214a also extends in the vertical direction X, and guide grooves 214b and 214c opened to the upper surface 21b continue from both ends of the contact accommodation hole 214a. The wire insertion portions 220a, 220b, 230a, 230b of the contacts 22, 23 are disposed in the contact receiving holes 213a, 214a. The guide grooves 213b, 213c, 214b, and 214c guide the tip to the contact receiving holes 213a and 214a when the electric wires 41, 42, 44, and 45 (see FIG. 2) are attached. Visual windows 215 and 216 opened on the upper surface 21b of the housing 21 are provided at the centers of the contact receiving holes 213a and 214a, respectively. The viewing windows 215 and 216 communicate with the viewing openings 221c and 231c, respectively, in a state where the contacts 22 and 23 are accommodated in the housing 21.

  The housing 21 is provided with an arm receiving hole 217 parallel to the contact receiving hole 213a and the guide groove 213b. Further, although not shown in the drawing, arm receiving holes parallel to these are also provided for the contact receiving holes 214a and the guide grooves 214b on the opposite side. The arm accommodation hole 217 accommodates the contact arm 233 of the contact 23. The inner part of the arm accommodation hole 217 is open to the lower surface 21a of the housing 21, and the front end 233c (see FIG. 4) of the contact arm 233 of the contact 23 accommodated in the arm accommodation hole 217 is the LED module 1 ( (See FIG. 2).

  When the LED connector 2 is assembled from the state shown in FIG. 3, the wire insertion portions 230a and 230b of the contact 23 are inserted into the contact receiving holes 213a in the posture shown in FIG. In a state where the electric wire insertion portions 230 a and 230 b are completely inserted into the contact receiving holes 213 a, the visual recognition opening 231 c of the contact 23 is connected to the visual recognition window 215 of the housing 21. At this time, the press-fit portion 232 of the contact 23 is press-fitted into the guide groove 213 b of the housing 21 and fixed. Further, the contact arm 233 of the contact 23 is inserted into the arm receiving hole 217, and the tip end portion 233 c (see FIG. 4) of the contact arm 233 protrudes from the lower surface 21 a of the housing 21. The contact arm 233 is supported in a cantilevered spring shape by the press-fit portion 232.

  In assembling the LED connector 2, the other contact 22 is inserted into the contact accommodating hole 214a in the same manner as the contact 23 described above. Each part of the other contact 22 is also arranged in the same manner as the contact 23 described above.

  In this way, the LED connector 2 shown in FIG. 2 is completed.

  Next, the case where the LED connector assembly S shown in FIG. 1 is assembled using the LED connector 2 will be described.

  First, the LED module 1 is mounted on the heat sink 3 in the posture and arrangement shown in FIG. Next, the LED connector 2 is placed on the LED module 1, and the LED connector 2 is fixed onto the heat sink 3 with screws 5. At this time, the LED module 1 is housed in the housing recess 211 of the housing 21 of the LED connector 2, and the light emitting unit 11 is exposed from the exposure window 212 of the housing 21. At this time, the contact arm 233 (FIG. 3) of the contact 23 elastically contacts the contact pad 13 of the LED module 1. The contact arm 233 presses the substrate 12 of the LED module 1 toward the heat sink 3 at the portion of the contact pad 13. As a result, the LED module 1 is in close contact with the heat sink 3. The same applies to the other contact 22.

  Next, the negative wires 41 and 42 and the positive wires 44 and 45 are connected to the LED connector 2.

  Specifically, first, the two positive electrode wires 44 and 45 are inserted in opposite directions in the longitudinal direction X from the wire insertion ports 231b and 231a (see FIG. 3) of the contact 23. More specifically, the core wire 441 (see FIG. 2) of one of the positive electrode wires 44 is inserted into the wire insertion portion 230b from the wire insertion port 231b via the guide groove 213b of the housing 21 shown in FIG. Further, the core wire 451 (see FIG. 2) of the other positive electrode electric wire 45 is inserted into the electric wire insertion portion 230a from the electric wire insertion port 231a via the guide groove 213c of the housing 21 shown in FIG. As a result, the two positive wires 44 and 45 and the contact pad 13 of the LED module 1 (see FIG. 2) and the anode of the light emitting unit 11 (see FIG. 2) in the LED element (not shown) are connected via the contact 23. Are electrically coupled.

  Next, the two negative wires 41 and 42 are also inserted into the remaining contacts 22 in opposite directions in the vertical direction X as in the case of the positive wires 44 and 45. Thus, the two negative wires 41 and 42 and the contact pad 14 of the LED module 1 (see FIG. 2) and the cathode of the LED element (not shown) are electrically coupled via the contact 22.

  As shown in FIG. 1, the positive electrode wire 45 and the negative electrode wire 42 are also connected to the LED connector 2 disposed adjacently on the heat sink 3.

  FIG. 5 is a plan view showing a state where an electric wire is connected to the LED connector. 6 is a cross-sectional view showing a cross section taken along line 6-6 of the LED connector shown in FIG.

  When connecting the electric wires 41, 42, 44, 45, the tip portions of the electric wires are inserted into the LED connector 2. The housing 21 of the LED connector 2 is provided with viewing windows 215 and 216. The viewing windows 215 and 216 communicate with the viewing openings 221c and 231c of the contacts 22 and 23 shown in FIG. For this reason, the core wires 411, 421, 441, 451 at the tips of the electric wires 41, 42, 44, 45 are the centers of the electric wire insertion portions 230a, 230b, 220a, 220b (see FIG. 3), that is, the visual openings 221c, It can be visually confirmed whether or not up to 231c has been inserted. Therefore, each electric wire 41, 42, 44, 45 is reliably connected.

  In addition, as shown in FIG. 6, in the state where the core wires 441 and 451 at the distal end portions of the electric wires 44 and 45 are inserted into the electric wire insertion portions 230a and 230b, the retaining pieces 234 and 235 are respectively connected to the core wires 441 and 451. Lock. For this reason, even if an inadvertent force is applied to the electric wires 44 and 45, the electric wires 44 and 45 are not detached from the LED connector 2. Thus, the reliable connection between the LED connector 2 and the electric wires 44 and 45 is completed by simply inserting the tip portions of the electric wires 44 and 45 into the LED connector 2 without using press-fitting or soldering.

  FIG. 7 is a cross-sectional view showing a cross section taken along line 7-7 of the LED connector shown in FIG.

  FIG. 7 shows a state in which the LED module 1 is housed between the housing recess 211 of the housing 21 and the heat sink 3. FIG. 7 shows the contact arm 233 of the contacts 23 of the LED connector 2. FIG. 7 shows a part of the contact arm 233 having a shape extending in the vertical direction X and in the direction approaching the LED module 1. The housing 21 is fixed to the heat sink 3 by screws 5, and the press-fit portion 232 (FIG. 3) of the contact 23 is supported by the housing 21. For this reason, the contact arm 233 supported by the press-fit portion 232 (FIG. 3) in a cantilevered spring shape elastically contacts the substrate 12 of the LED module 1 and moves the substrate 12 toward the heat sink 3 by the elastic force. Is pushing. Therefore, the contact 23 reliably contacts the LED module 1, and the LED module 1 is in close contact with the heat sink 3.

  In the LED connector 2 of the present embodiment, as shown in FIG. 2, a pair of contacts 22 and 23 are disposed on both sides of the LED module 1. In one contact 23, two positive electrode wires 44 and 45 are inserted in opposite directions in the vertical direction X perpendicular to the horizontal direction Y in which the pair of contacts 22 and 23 are arranged. In addition, two negative electrode wires 41 and 42 are also inserted in the other contact 22 in opposite directions in the vertical direction X. Therefore, the four electric wires 41, 42, 44, 45 extend side by side in two substantially parallel rows. For this reason, as shown in FIG. 1, the electric wires arranged in two rows can be extended via the LED connector 2. Further, the voltage applied to the LED module 1 due to the daisy chain connection is constant regardless of the number of LED modules 1 connected. By using the LED connector 2, a large number of LED modules 1 can be daisy-chain connected without using components such as crimp connectors and terminal blocks for branching electric wires or solder connections.

  In the embodiment described above, a rectangular plate-shaped housing 21 is shown as an example of the housing according to the present invention. However, the present invention is not limited to this, and the housing may have a disk shape, for example.

  In the above-described embodiment, the base on which the LED module is fixed is the heat sink 3 itself. However, this base may be a resin base that incorporates a heat sink with which the LED module abuts.

  Furthermore, the contact pads of the LED module may be arranged side by side on one side of the LED module, not on both sides of the light emitting unit.

DESCRIPTION OF SYMBOLS 1 LED module 11 Light emission part 2 LED connector 21 Housing 211 Housing recessed part 212 Exposed window 215,216 View opening (view window)
22, 23 Contact 221c, 231c Visual opening 230a, 230b Electric wire insertion part 231a, 231b Electric wire insertion port 223, 233 Contact arm 234, 235 Stopping piece 3 Heat sink (base)
41, 42 Negative electrode wire 44, 45 Positive electrode wire

Claims (4)

An LED connector for fixing an LED module having a light emitting unit and a pair of contact pads for supplying power to the light emitting unit on a table,
A housing for accommodating the LED module between the base and the hole in which the light emitting unit is exposed;
A pair of contacts having contact arms housed in the housing and contacting each one of the pair of contact pads;
Each of the pair of contacts includes a pair of wire insertion ports into which two electric wires are inserted in opposite directions at both ends in a direction intersecting with the direction in which the pair of contacts are arranged , and one of the pair of wire insertion ports. The contact arm has a press-fit portion for press-fitting the contact into the housing in the vicinity of one electric wire insertion port, and a pair of connection portions connected to each of the two electric wires inserted from the pair of electric wire insertion ports. It possesses integral with,
The contact arm has a shape extending from the press-fit portion toward the mating contact of the pair of contacts, and further extending in a direction connecting the pair of electric wire insertion openings and in a direction approaching the LED module, An LED connector characterized in that a tip portion elastically contacts the contact pad . The pair of contact pads are arranged at symmetrical positions around the light emitting part,
2. The LED connector according to claim 1, wherein the pair of contacts have the same shape and are arranged at symmetrical positions with the light emitting portion as a center.   3. The LED connector according to claim 1, wherein each of the pair of contacts has a pair of retaining pieces that respectively retain the two wires inserted from the pair of wire insertion ports. . Each of the pair of contacts has an opening that exposes the ends of the two electric wires inserted from the pair of electric wire insertion ports at a central portion of the pair of electric wire insertion ports,
The housing is in communication with said opening of each said pair of contacts, claims 1 to 3, characterized in that with a viewing window for viewing the distal end portion of the wire inserted in each said pair of contact The LED connector according to any one of claims.

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