WO2017026625A1 - Electrical connecting terminal - Google Patents

Electrical connecting terminal Download PDF

Info

Publication number
WO2017026625A1
WO2017026625A1 PCT/KR2016/003980 KR2016003980W WO2017026625A1 WO 2017026625 A1 WO2017026625 A1 WO 2017026625A1 KR 2016003980 W KR2016003980 W KR 2016003980W WO 2017026625 A1 WO2017026625 A1 WO 2017026625A1
Authority
WO
WIPO (PCT)
Prior art keywords
spring
electrical connection
connection terminal
electrically conductive
contact portion
Prior art date
Application number
PCT/KR2016/003980
Other languages
French (fr)
Korean (ko)
Inventor
김선기
박기한
Original Assignee
조인셋 주식회사
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 KR1020150124490A external-priority patent/KR101793717B1/en
Application filed by 조인셋 주식회사 filed Critical 조인셋 주식회사
Priority to EP16834165.9A priority Critical patent/EP3333983A4/en
Priority to JP2017508558A priority patent/JP6335385B2/en
Publication of WO2017026625A1 publication Critical patent/WO2017026625A1/en
Priority to US15/441,570 priority patent/US9966685B2/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/57—Fixed connections for rigid printed circuits or like structures characterised by the terminals surface mounting terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted

Definitions

  • the present invention relates to an electrical connection terminal, and more particularly, to an electrical connection terminal having a low height, simple structure, easy manufacturing, low manufacturing cost, and easy change of characteristics.
  • the present invention relates to an electrical connection terminal having a large working distance compared to the size and easy to solder by vacuum pickup.
  • the conductive pattern of the circuit board In order to electrically connect the conductive pattern of the circuit board with a conductive object such as an antenna of a smart phone or to electrically ground the ground to eliminate electrostatic or electromagnetic interference (EMI), the conductive pattern of the circuit board It can be used by soldering an electrical connection terminal having elasticity.
  • a conductive object such as an antenna of a smart phone or to electrically ground the ground to eliminate electrostatic or electromagnetic interference (EMI)
  • the electrical connection terminal when used for the antenna contact (contact) of the smart phone or the circuit board test, the price should be cheap, small size, low electrical resistance, good elasticity and elastic resilience.
  • an electrical connection terminal capable of reflow soldering by vacuum pickup may be required for economical mounting.
  • the electrical connection terminals When these electrical connectors are used to form conductive paths in the vertical direction, the electrical connection terminals have a large working distance in the vertical direction as large as possible to accommodate the vertical tolerances of the circuit board to be electrically connected and the conductive object. For mass production, a structure and material that can be soldered by surface mounting are required.
  • a bonding process is included and a manufacturing process is complicated and there exists a limit to making size small.
  • the diameter and height of the electrical contact terminals are each small size of 1 mm or less, there is a problem that it is difficult to manufacture.
  • Korean Patent No. 1437935 by the present applicant, the contact member is in electrical contact with the object, the end of the opening is bent inward to the opening edge is bent in the shape of a metal member formed of a metal material;
  • a movable member made of a metallic material, which is inserted into the fixing member and slidably coupled thereto and has a cylindrical shape having one end opened and bent outwardly to form a flange;
  • an electrically conductive spring housed in the fixing member so that one end contacts the bottom of the fixing member and the other end contacts the bottom of the movable member so that the movable member slides elastically with respect to the fixing member.
  • the movable member and the fixed member are always electrically connected by the spring, the elastic restoring force of the spring is prevented, the flange is caught on the locking jaw to prevent the movable member from being separated from the fixed member, the thickness of the flange Corresponds to a thickness of the movable member, and an upper surface of the movable member is provided with a flat surface in a horizontal direction for vacuum pickup, and a lower surface of the fixing member is capable of reflow soldering by solder cream.
  • the terminal is starting.
  • the diameter and height of the electrical connection terminal are each small size of 1 mm or less, since each component has a small dimension, there is a problem in that it is difficult to manufacture and difficult to assemble, resulting in poor productivity.
  • a hollow cylindrical opening is formed at the lower end of the upper probe part, and the lower probe part includes an insertion part inserted into the opening part, and a spring surrounds the insertion part and both ends of the upper and lower probe parts.
  • the probe connected pogo pin is fixed to, and the upper probe portion, the lower probe portion and the spring is integrally configured.
  • the pogo pin Since the pogo pin is expensive to mold and only one product can be produced by one mold, it is difficult to economically provide electrical connection terminals having various characteristics, and it is difficult to manufacture products having widths and heights of 0.5 mm or less, respectively.
  • Another object of the present invention is to provide an electrical connection terminal that is easy to be in electrical and mechanical contact with an object and has a large working distance.
  • Another object of the present invention is to provide an electrical connection terminal that is easy to be mounted on an appliance and has excellent environmental resistance.
  • Another object of the present invention is to provide an electrical connection terminal that is easy to reflow soldering by vacuum pickup.
  • Another object of the present invention is to provide an electrical connection terminal having a small dimension and economically easy to change mechanical and electrical properties such as elastic restoring force, pressing force, working distance and vertical electrical resistance.
  • Another object of the present invention is to provide an electrical connection terminal that can reduce the inductance value and electrical resistance formed in the spring.
  • Another object of the present invention is to provide an electrical connection terminal that can minimize the breakage of the spring by an external impact.
  • the above object is an electrical connection terminal interposed between electrically conductive objects to electrically connect the objects to each other, comprising: a spring made of metal; And an electroconductive contact portion formed to be adhered to at least one end of the spring and electrically contacting the object, wherein the contact portion includes a liquid electroconductive material in which a metal powder is mixed with a liquid polymer resin. It is achieved by an electrical connection terminal, characterized in that formed by wrapping the end of the hardened or inlet hardened in the end hole of the spring.
  • the contact portion is formed at one end of the spring, the other end of the spring is received and coupled to the holder cup of the metal material.
  • the above object is an electrical connection terminal interposed between electrically conductive objects to electrically connect the objects to each other, the elastic coil spring of a metal material; A metal cap adhered to one end of the spring via an electrically conductive adhesive; And a holder cup of a metal material electrically coupled to the other end of the spring, wherein the height of the holder cup is 1/2 or less of the spring height, and an outer surface of the holder cup is formed with a solderable plating layer. Achieved by an electrical connection terminal.
  • the above object is an electrical connection terminal interposed between electrically conductive objects to electrically connect the objects to each other, the elastic coil spring of a metal material; A metal cap adhered to one end of the spring via an electrically conductive adhesive; And an electroconductive contact portion formed by being bonded to the other end of the spring and fixed to the object by soldering, wherein the contact portion includes a liquid electroconductive material in which a metal powder is mixed with a liquid polymer resin at an end portion of the spring. It is achieved by the electrical connection terminal characterized in that it is formed by encapsulating the hardening or inflow hardening in the end hole of the spring.
  • the above structure is composed of a metal spring having good elasticity and elastic restoring force and low electrical resistance, and a conductive contact portion having low electrical resistance formed at both ends or one end thereof. It is simple and easy to manufacture, and has the advantages of good elasticity and elastic restoring force and low electrical resistance even in small dimensions.
  • the end of the spring is dipped or impregnated with a liquid electroconductive material and then hardened by hardening to form an electroconductive contact portion, it is easy to manufacture and the elastic portion of the spring in which the electroconductive contact portion is not formed is pressed well with a small force. Provides good elasticity and elastic resilience.
  • the electrically conductive contact blocking the end hole of the spring facilitates the vacuum pick-up, increases the contact area with the opposing object and consequently reduces the electrical contact resistance.
  • the shape of the electroconductive contact portion may be slightly indented or slightly convex toward the center to facilitate stable physical or electrical contact with the opposing object.
  • the material, structure, dimensions and shape of the spring and the electrically conductive contact portion can be adjusted appropriately, or the pressing force, elastic restoring force and electrical resistance can be easily adjusted by adjusting the thickness of the plating layer, and the dimensions of the spring support portion and the elastic portion can be adjusted. It is easy to adjust the working distance.
  • the strength of the material of the electroconductive contact portion is lower than that of the spring material, which has the advantage of providing less scratches or scratches to the opposing object.
  • the metal layer which is solderable and has excellent environmental resistance and electrical conductivity, is formed on the entire outer surface of the spring and the electrically conductive contact portion, the upper and lower electrical resistance is lower, the environmental resistance is better, and the soldering is easy. .
  • the elastic rubber layer formed by adhering to the elastic part of the spring protects the spring from external impact and controls the soldering height during soldering, and in particular, in the case of electrical conductivity, reduces the inductance value formed between the springs and makes electrical connections. Reduce the upper and lower electrical resistance of the terminal.
  • the holder cups can be more easily soldered, have good soldering strength, and can provide stable reflow soldering with less shaking during reflow soldering by vacuum pickup.
  • the holder cup has the advantage that serves to reduce the deformation of the spring by the external force.
  • the structure of the various holder cups can be variously manufactured according to the purpose of the electrical contact terminal, it is advantageous to use easily inserted into the socket.
  • FIG 1 shows an electrical connection terminal according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of FIG. 1 cut vertically.
  • 3 is a photographic image for the actual product.
  • FIG 4 shows an electrical connection terminal according to another embodiment of the present invention.
  • FIG 5 shows an electrical connection terminal according to another embodiment of the present invention.
  • FIG 6 shows an electrical connection terminal according to another embodiment of the present invention.
  • FIG. 7 is a cross-sectional view of the electrical connection terminal of FIG. 6 cut vertically.
  • 8 (a) to 8 (e) show an electrical connection terminal according to another embodiment of the present invention, respectively.
  • FIG. 1 is a view illustrating an electrical connection terminal according to an embodiment of the present invention
  • FIG. 2 is a cross-sectional view of FIG. 1 taken vertically
  • FIG. 3 is a photographic image for an actual product.
  • the electrical connection terminal 100 includes a spring 110 made of a metal having good elasticity, and contact portions 120 and 130 having electrical conductivity formed by being bonded to both ends of the spring 110.
  • the electrical connection terminal 100 is located between the electrically conductive objects facing each other to elastically and electrically connect the object by compression and restoration of the spring 110.
  • Examples of the electrically conductive object may include a conductive pattern and a speaker terminal of the circuit board.
  • the conductive contact part 120 is fixed to the conductive pattern of the circuit board by soldering or the like, and the speaker terminal presses the conductive contact part 130.
  • the conductive pattern of the circuit board and the speaker terminal can be electrically connected by elasticity.
  • the size of the electrical connection terminal 100 may have an inner diameter of 0.10 mm to 1.5 mm and a height of 0.3 mm to 1.5 mm, and the pressing force of the electrical connection terminal 100 may be 2gf to 80gf, and electrical connection The working distance of the terminal 100 may be 40% or more of the initial height.
  • the overall shape of the electrical connection terminal 100 may be a cylindrical shape.
  • the spring 110 includes an elastic portion 112 wound around a middle portion at a constant pitch and support portions 114 and 116 formed around both ends of the elastic portion 112.
  • the elastic portion 112 is formed on the order of 2 to 2.5 turns, and the support portions 114 and 116 are formed on the order of 1 to 1.5 turns.
  • the spring 110 may have a height of 0.95 mm, a turn outer diameter of 0.63 mm, and a pitch of the elastic part 112 of 0.25 mm, but is not limited thereto.
  • the spring 110 is, for example, a copper alloy wire or stainless steel wire such as a phosphor bronze wire or a beryl copper wire having a high mechanical strength and good elasticity having a circular cross section and a wire diameter of 0.01 mm to 0.15 mm, and a piano wire.
  • Iron alloy wire such as wire can be wound into a coil shape.
  • the outer surface of the spring 110 may be sequentially plated with nickel / gold or nickel / palladium (Pd) having good electrical conductivity and environmental resistance.
  • the mechanical properties of the spring 110 may be stainless steel wire or piano with high electrical resistance.
  • Piano wire Wire can be plated with thick copper or gold with good electrical conductivity to lower the overall electrical resistance.
  • the shape of the spring 110 may be a coil shape that is easy to manufacture with a small size, so that the turn diameter of each of the elastic portion 112 and the support portions 114 and 116 may be the same or relatively different. have.
  • the number of turns of the elastic part 112 constituting the spring 110 is not limited, but may be two or more turns to increase the working distance, and the pitch of the elastic part 112 may be appropriately designed to secure a constant elastic force. have.
  • the support portions 114 and 116 may improve support strength and eliminate pitches so that the contact portions 120 and 130 are formed reliably, as described below, so that adjacent turns may contact each other.
  • the height of the support parts 114 and 116 is formed smaller than the height of the elastic part 112, and the separation distance between the contact parts 120 and 130 is the height of the electrical connection terminal 100. It may be 1/2 or more.
  • the contact parts 120 and 130 may respectively dip the both ends of the spring 110 in a vertical direction in a liquid conductive material in which a conductive polymer powder is mixed with a liquid polymer resin having an adhesive strength after curing ( It is formed by dipping) and then taken out and cured.
  • the liquid electroconductive material is bonded to the spring 110 while being cured by heat or ultraviolet rays.
  • a liquid electroconductive material may be introduced into the end hole 111 of the spring 110 by an impregnation to be cured.
  • the liquid electroconductive material flows into the end hole 111 at a height corresponding to the support portions 114 and 116, and may leak to the outside through the gap between the turns in the support portions 114 and 116.
  • the contact portions 120 and 130 may be formed by blocking a hole formed at the end of the spring 110.
  • the contact portions 120 and 130 formed by curing of the polymer resin have a lower mechanical hardness (strength) than the spring 110, it is possible to prevent a wound or a scratch on the object to be opposed.
  • the electrical resistance of the electrical connection terminal 100 in the up and down direction is not particularly limited, but is preferably 0.5 ohm or less, and may be slightly reduced as the spring 110 is compressed, but it may be maintained at 0.5 ohm or less even under normal conditions. good.
  • the contact portions 120 and 130 are formed by dipping the support portions 114 and 116 of the spring 110 into a liquid electroconductive material and then taking out and curing the electroconductive material, which is heat resistant to soldering. It can be configured by mixing a metal powder such as silver with good electrical conductivity to a liquid material of an epoxy resin, a polymer resin such as polyimide resin, or an elastic rubber such as silicone rubber, and has an adhesive force with the spring 110 after curing. .
  • the contacts 120 and 130 are all composed of an electrically conductive epoxy resin or an electrically conductive polyimide resin, but either one of the contacts 120 and 130 is composed of an electrically conductive epoxy resin or an electrically conductive polyimide resin and the other May be composed of an electrically conductive silicone rubber, in which case one of the contacts (120, 130) is fixed to one object by soldering and the other of the contacts (120, 130) by physical pressure and other objects Can be contacted.
  • the contact portions 120 and 130 are made of silicone rubber, since the elasticity after curing and the hardness (lower strength) are low, there is an advantage of reducing scratches on the opposing objects and having electrical contact with elasticity.
  • UV ultraviolet
  • liquid conductive resins or conductive rubbers are formed by mixing a sufficient amount of conductive particles such as silver or silver plated copper with liquid resins or rubbers, for example, to have a viscosity slightly higher than starch syrup. Can be.
  • the support parts 114 and 116 of the spring 110 are vertically dipped out of the liquid electroconductive material and then taken out, the liquid electroconductive material flows and hardens along the outer surfaces of the support parts 114 and 116, thereby FIG. 1.
  • the bent portion is formed on the outer surface of the contact portion (120, 130).
  • the liquid electroconductive material flows to the outside of the support parts 114 and 116 by curing only the liquid electroconductive material flows into the inside of the end hole 111 of the spring 110 and cures. You can prevent it.
  • Such dipping may be performed once or multiple times, depending on the viscosity and type of the liquid conductive material, the size and shape of the end hole of the spring, the size and shape of the metal powder, and the shape of the conductive contact. As these can vary, they can be performed with appropriate adjustments.
  • the conductive contacts 120 and 130 are formed by using a metal powder having a high viscosity and a relatively large size and having a relatively high viscosity. can do.
  • the contacts 120 and 130 are formed while blocking the end holes 111 of the spring 110 in a semi-cured state. At this time, it protrudes downward from the end hole 111 of the spring 110 by gravity.
  • the contact portions 120 and 130 protruding downward are compressed substantially horizontally so that the upper and lower surfaces of the contact portions 120 and 130 are horizontal.
  • the upper and lower surfaces of the end holes 111 protrude downward.
  • the end faces 121 and 131 can be formed in a shape (semi-spherical shape) projecting slightly outward toward the center.
  • the end faces 121 and 131 of the contact portions 120 and 130 recessed toward the center can secure a large contact area with the round outer surface of the solder ball, for example, when the object is a solder ball. As a result, a vacuum pick-up is possible while the electrical contact resistance becomes small.
  • the electrical connection terminal 100 is manufactured by completely curing in this state, and preferably, the whole may be plated with nickel / gold or nickel / palladium.
  • gold having a good electrical conductivity and environmental resistance and having good soldering may be second plated.
  • the compression and restoring force of the electrical connection terminal 100 can be adjusted, or the strength of the electrical connection terminal 100 can be adjusted, and the thickness of the gold plating layer having good electrical conductivity can be adjusted.
  • the up and down electrical resistance of the electrical connection terminal 100 can be adjusted.
  • the present invention is not limited thereto, and the center portion of the end portions 121 and 131 of the contact portions 120 and 130 end portions thereof.
  • a smaller through hole may be formed than the hole 111.
  • Electrical connection terminal 100 is reel taped to the carrier, the end surface (121, 131) of any one of the contact portion 120, 130 is provided with a plane that can be picked up vacuum pick-up at the end surface (121, 131) Surface mount and reflow soldering by solder cream on opposite end surfaces 121, 131.
  • the present invention is not limited thereto, and the electrical connection terminal 100 may be used by being inserted into a fixture such as a terminal test socket.
  • FIG 4 shows an electrical connection terminal according to another embodiment of the present invention.
  • the electrically conductive contact portion 220 of the electrical connection terminal 200 is formed only at the upper end of the spring (210).
  • the lower end of the spring 210, in which the contact is not formed, may be fixed to an object such as a circuit board by soldering, for example, by solder cream, but is not limited thereto.
  • FIG 5 shows an electrical connection terminal according to another embodiment of the present invention.
  • elastic rubber layers 350 and 352 are adhesively formed on the elastic portion 312 of the spring 310.
  • the elastic rubber layers 350 and 352 may be formed by applying a liquid silicone rubber to the elastic portion 312 of the spring 310 by using a needle or the like after forming the contact portions 320 and 330. It is not limited to this.
  • the part of the spring 310, in which the contact portion 320, 330 is not formed is dipped into the liquid silicone rubber and cured, and then formed at the end where the contact portion 320, 330 is not formed.
  • the elastic rubber layer is removed by grinding or the like, the end portion of the spring 310 is exposed to the outside.
  • the elastic rubber layers 350 and 352 are not plated, and thus the elastic part 312 having the elastic rubber layer maintains spring performance such as elasticity. That is, the electrical connection terminal 300 has a mechanical performance by the elastic rubber layers 350 and 352 to the spring performance by the elastic portion 312 of the spring 310.
  • the hardness of the elastic rubber layers 350 and 352 may be Shore A 20 to 75 in consideration of pressing force and recovery rate.
  • the metal wire constituting the spring 310 is easily stretched by an external impact applied from the side by the elastic rubber layers 350 and 352 formed by being bonded to the elastic portion 312 of the spring 310. There is an advantage that it is not deformed.
  • the pressing force and the recovery rate of the electrical connection terminal 300 may be adjusted using the elastic rubber layers 350 and 352.
  • the elastic rubber layers 350 and 352 are formed to surround the elastic portion 312 of the spring 310 as shown in FIG. 5A, or the elastic portion 312 of the spring 310 as shown in FIG. 5B. It can be formed only inside.
  • the polymer resin is cured to form the contact portion 330 in a state in which the protruding height of the end 316a is lowered to some extent in advance.
  • the height of 316a can be reduced significantly.
  • the end surfaces of the contact portions 320 and 330 are flattened so that the vacuum pick-up is easy and the contact surfaces 320 and 330 are formed before and after forming the contact portions 320 and 330 in order to secure a large contact area. Grinding may be used to remove some of the supports 314, 316 of the spring 310.
  • Figure 6 illustrates an electrical connection terminal according to another embodiment of the present invention
  • Figure 7 is a cross-sectional view of the electrical connection terminal of Figure 6 cut vertically.
  • the electrical connection terminal 400 is a holder made of a metal coil spring 410, a contact portion 430 having electrical conductivity formed by being bonded to one end of the spring 410, and a holder bonded to the other end via an electrically conductive adhesive 422.
  • the holder cup 420 is fixed to the conductive pattern of the circuit board by soldering or the like, and the speaker terminal or the antenna terminal is pressed against the conductive contact portion 430 so that the conductive pattern of the circuit board and the speaker terminal or the antenna are elastic.
  • the terminals can be electrically connected.
  • the holder cup 420 may be formed of a single body made of metal such as copper or a copper alloy having low hardness.
  • the holder cup 420 may be a press product manufactured by pressing a metal sheet having a thickness of between 0.05 mm and 0.15 mm by a drawing mold. Can be. As such, by pressing and forming the metal sheet, mass production is easy, workability is good, manufacturing is easy, and the yield is improved, and manufacturing costs are small.
  • the holder cup 420 has a cylindrical body 421 whose upper surface is opened and the lower surface is blocked, but is not limited thereto.
  • the edge of the lower surface of the holder cup 420 may be rounded to increase the soldering area to increase the soldering strength.
  • the height of the holder cup 420 is formed to be about 50% or less of the overall height.
  • the height of the holder cup 420 may be formed to be 1/2 or less of the height of the spring 410, but is not limited thereto.
  • the inner diameter of the holder cup 420 may be the same or slightly larger than the turn diameter of the spring 410, in which case the spring 410 is in contact with the inner wall of the holder cup 420 up and down
  • the inductance value can be reduced while reducing the electrical resistance, and in the case of a large, the spring 410 being compressed can be accommodated into the holder cup 420 to increase the working distance.
  • the support 414 at the bottom of the spring 410 is adhered to and fixed to the bottom of the holder cup 420 via the electrically conductive adhesive 422.
  • the amount by which the electrically conductive adhesive 422 is filled in the holder cup 420 is sufficient to fix the support 414 to the bottom of the holder cup 420.
  • the electroconductive adhesive 422 may be formed by soldering a liquid electroconductive adhesive in which a metal powder is mixed with a polymer resin including a rubber having heat resistance by curing.
  • the upper and lower electrical resistance of the electrical connection terminal 400 can be reduced by the electrically conductive adhesive 422.
  • the spring 410 and the holder cup 420 may be welded and bonded by laser welding or the like without using the electrically conductive adhesive 422.
  • the holder cup 420 can prevent the external force applied to the spring 410 to some extent.
  • the length of the spring 410 exposed to the outside is long, so the possibility of deformation by external force increases, but if there is a holder cup 420, exposed to the outside The length of the spring 410 to be shortened to reduce the possibility of deformation by the external force.
  • the manufactured electrical connection terminal 400 may be plated with nickel / gold or palladium.
  • nickel having high hardness on the spring 410 and the contact portion 430 gold having a good electrical conductivity and environmental resistance and having good soldering may be second plated.
  • the thickness of the nickel plating layer having a high mechanical strength the elasticity and elastic restoring force of the electrical connection terminal 400 can be adjusted or the strength of the electrical connection terminal 400 can be adjusted, and the thickness of the gold plating layer having good electrical conductivity is adjusted.
  • the upper and lower electrical resistance of the electrical connection terminal 400 can be adjusted.
  • a metal such as solderable gold can be plated as a whole, thereby improving the environmental resistance and reducing the manufacturing cost while reducing the upper and lower resistances. .
  • Electrical connection terminal 400 is reel taped to the carrier, the end surface 431 of the contact portion 430 is provided with a plane capable of vacuum pick-up, vacuum pick-up from the corresponding end surface 431 surface mount and holder cup 420 Reflow soldering by solder cream may be performed at.
  • 8 (a) to 8 (e) show an electrical connection terminal according to another embodiment of the present invention, respectively.
  • the opening edge of the holder cup 420 is bent inward to form a flange 423, and the flange 423 is formed to a width that overlaps with the spring 410.
  • a part of the spring 410 is prevented from being separated out by the flange 423 in a state accommodated in the holder cup 420.
  • the spring 410 is secured to the holder cup 420 by the flange 423 substantially without the electrically conductive adhesive 422 of the above embodiment.
  • the present invention is not limited thereto, and the spring 410 may be more tightly coupled to the holder cup 420 by using the electrically conductive adhesive 422.
  • the number of turns of the spring 410 accommodated inside the holder cup 420 is not particularly limited, but in the holder cup 420, the spring 410 is firmly connected between the flange 423 and the bottom of the holder cup 420. It is sufficient that the flange 423 is accommodated in the number of turns to receive the elastic restoring force by the spring 410 to be fixed.
  • the bottom surface of the holder cup 420 is formed as an inclined surface 424 which is inclined upward from the edge toward the center to be recessed.
  • the surface area of the lower surface of the holder cup 420 is increased by the recessed portion, and as a result, the soldering strength may be improved.
  • a hole 425 is formed at the bottom center of the holder cup 420, and ribs 426 are fixed to the inside of the holder cup 420 along the edge of the hole 425. Protrudes to a height.
  • the rib 426 having a constant height penetrates from the lower end of the spring 410 to the inside, even if the spring 410 is elastically deformed, the lower end of the spring 410 is separated from the rib 426 and then is There is less chance of being wrong.
  • the rib 426 may be formed continuously by, for example, a process of forming the hole 425.
  • the rib 426 forms a thin portion of the lower portion of the holder cup 420. It can be constructed by stretching.
  • the height of the rib 426 is lower than the height of the holder cup 420, and the outer diameter of the rib 426 should be smaller than the turn inner diameter of the spring 410.
  • the lower surface of the holder cup 420 may form a flat surface.
  • the opening edge of the holder cup 420 may be bent outward to form the locking jaw 427.
  • the locking jaw 427 is seated on the surface of the insulating film to secure the electrical connection terminal 400.
  • a cap 440 is attached to an upper end of the spring 410 through an electrically conductive adhesive 442.
  • the cap 440 is covered with the top of the spring 410 instead of the contact portion 430 in the above embodiment to perform its role.
  • Cap 440 is made of the same material as the holder cup 420, has a very low height than the holder cup 420, for example, may have a height corresponding to about 1 to 1.5 turns of the spring 410. .
  • the upper surface of the cap 440 can maintain a smooth plane and make reliable contact with the object, and the vacuum pickup becomes easy.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

Disclosed is an electrical connecting terminal which is interposed between electrically conductive objects to electrically connect the objects to each other. The electrical connecting terminal comprises: an elastic coil spring made of a metallic material; and an electrically conductive contact part which is bonded and formed on at least one end of the spring so as to be in electrical contact with the objects, wherein the contact part is formed in a manner that a liquid-phase electrically conductive material containing a mixture of a liquid polymer resin and metal powder is cured while surrounding one end of the spring, or the liquid-phase electrically conductive material is injected into an end aperture on one end of the spring, followed by curing.

Description

전기접속단자Electrical connection terminal
본 발명은 전기접속단자에 관한 것으로, 특히 높이가 낮고, 구조가 간단하여 제조가 용이하고 제조원가가 저렴하면서 특성의 변경이 용이한 전기접속단자에 관련한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connection terminal, and more particularly, to an electrical connection terminal having a low height, simple structure, easy manufacturing, low manufacturing cost, and easy change of characteristics.
또한, 본 발명은 크기에 비해 작동거리가 크고 진공픽업에 의한 솔더링이 용이한 전기접속단자에 관련한다.In addition, the present invention relates to an electrical connection terminal having a large working distance compared to the size and easy to solder by vacuum pickup.
스마트 폰의 안테나와 같은 도전성 대상물과 회로기판의 도전 패턴을 전기적으로 연결하기 위하여 또는 정전기나 전자파 장애(Electromagnetic Interference; EMI)를 제거하기 위해 그라운드(Ground)에 전기적으로 접지하기 위해서는 회로기판의 도전 패턴에 탄성을 갖는 전기접속단자를 솔더링하여 사용할 수 있다.In order to electrically connect the conductive pattern of the circuit board with a conductive object such as an antenna of a smart phone or to electrically ground the ground to eliminate electrostatic or electromagnetic interference (EMI), the conductive pattern of the circuit board It can be used by soldering an electrical connection terminal having elasticity.
특히, 전기접속단자가 스마트 폰의 안테나 콘택(contact)이나 회로기판의 테스트용으로 사용되는 경우 가격이 싸고 크기가 작으면서 전기저항이 낮고 탄성 및 탄성복원력이 좋아야 한다. 또한, 경제성 있는 장착을 위해 진공픽업에 의한 리플로우 솔더링이 가능한 전기접속단자가 요구될 수 있다.In particular, when the electrical connection terminal is used for the antenna contact (contact) of the smart phone or the circuit board test, the price should be cheap, small size, low electrical resistance, good elasticity and elastic resilience. In addition, an electrical connection terminal capable of reflow soldering by vacuum pickup may be required for economical mounting.
이들 전기접속단자가 상하 방향으로 도전 경로를 형성하기 위해 사용되는 경우, 전기적으로 연결하려는 회로기판과 도전성 대상물의 상하 방향의 치수 공차를 수용할 수 있게 전기접속단자는 가능한 상하 방향으로 작동거리가 크고, 양산성을 위해 표면실장에 의한 솔더링 장착이 가능한 구조와 재질이 요구된다.When these electrical connectors are used to form conductive paths in the vertical direction, the electrical connection terminals have a large working distance in the vertical direction as large as possible to accommodate the vertical tolerances of the circuit board to be electrically connected and the conductive object. For mass production, a structure and material that can be soldered by surface mounting are required.
예를 들어, 인쇄회로기판과 전도성 대상물 간의 기구적 공차가 클수록 이들을 전기적으로 연결하기 위해 전기접속단자의 작동거리가 큰 것이 요구된다.For example, the larger the mechanical tolerance between the printed circuit board and the conductive object, the larger the operating distance of the electrical connection terminal is required to electrically connect them.
본 출원인에 의한 미국 특허 US7,931,475에 의하면, 튜브 형상의 절연 탄성코어, 절연 탄성코어를 감싸면서 접착되는 절연 비발포 고무코팅층, 및 한 면이 절연 비발포 고무코팅층을 감싸도록 접착되고 다른 면에 금속층이 형성된 탄성 전기접촉단자가 개시된다.According to U.S. Patent US 7,931,475 by the Applicant, a tubular insulating elastic core, an insulating non-foaming rubber coating layer adhered to and wrapped around the insulating elastic core, and one side are bonded to surround the insulating non-foaming rubber coating layer and on the other side An elastic electrical contact terminal having a metal layer is disclosed.
이러한 구조에 의하면, 접착 과정이 포함되어 있어 제조 공정이 복잡하고, 크기를 작게 하는 것에 한계가 있다. 특히, 전기접촉단자의 직경과 높이가 각각 1㎜ 이하의 작은 치수인 경우 제조하기 어렵다는 문제점이 있다.According to such a structure, a bonding process is included and a manufacturing process is complicated and there exists a limit to making size small. In particular, when the diameter and height of the electrical contact terminals are each small size of 1 mm or less, there is a problem that it is difficult to manufacture.
다른 종래 기술로, 본 출원인에 의한 국내 등록특허 제1437935호를 보면, 대상물과 전기적으로 접촉하고, 일단이 개구된 통 형상으로 개구 가장자리가 내측으로 절곡되어 걸림턱이 형성된 금속 재질의 고정부재; 상기 고정부재에 끼워져 슬라이드 가능하게 결합되고, 일단이 개구된 통 형상으로 개구 가장자리가 외측으로 절곡되어 플랜지가 형성된 금속 재질의 가동부재; 및 상기 고정부재에 수납되어 일단이 상기 고정부재의 바닥에 접촉하고 타단이 상기 가동부재의 바닥에 접촉하여 상기 가동부재가 상기 고정부재에 대해 탄성적으로 슬라이드 되도록 하는 전기전도성 스프링을 포함하고, 상기 가동부재와 상기 고정부재는 상기 스프링에 의해 항상 전기적으로 연결되고, 상기 스프링의 탄성 복원력을 받아 상기 플랜지가 상기 걸림턱에 걸려 상기 가동부재가 상기 고정부재로부터 분리되는 것이 방지되며, 상기 플랜지의 두께는 상기 가동부재의 두께에 대응하고, 상기 가동부재의 상면에는 진공픽업을 위해 수평방향으로 편평한 면이 마련되고, 상기 고정부재의 하면은 솔더 크림에 의한 리플로우 솔더링이 가능한 것을 특징으로 하는 전기접속단자를 개시하고 있다.In another prior art, Korean Patent No. 1437935 by the present applicant, the contact member is in electrical contact with the object, the end of the opening is bent inward to the opening edge is bent in the shape of a metal member formed of a metal material; A movable member made of a metallic material, which is inserted into the fixing member and slidably coupled thereto and has a cylindrical shape having one end opened and bent outwardly to form a flange; And an electrically conductive spring housed in the fixing member so that one end contacts the bottom of the fixing member and the other end contacts the bottom of the movable member so that the movable member slides elastically with respect to the fixing member. The movable member and the fixed member are always electrically connected by the spring, the elastic restoring force of the spring is prevented, the flange is caught on the locking jaw to prevent the movable member from being separated from the fixed member, the thickness of the flange Corresponds to a thickness of the movable member, and an upper surface of the movable member is provided with a flat surface in a horizontal direction for vacuum pickup, and a lower surface of the fixing member is capable of reflow soldering by solder cream. The terminal is starting.
상기의 구조에서, 금속 시트를 프레스하여 가동부재와 고정부재를 제작하고 내부에 금속 스프링을 삽입한 다음 다시 고정부재를 프레스하여 가동부재와 결합되도록 하기 때문에 가격이 비싸고 조립이 어렵다는 문제점이 있다.In the above structure, there is a problem in that it is expensive and difficult to assemble because the metal sheet is pressed to produce the movable member and the fixing member, the metal spring is inserted therein, and the pressing member is pressed again to be combined with the movable member.
특히, 전기접속단자의 직경과 높이가 각각 1㎜ 이하의 작은 치수인 경우 각 구성부분이 작은 치수를 갖기 때문에 제조하기 어렵고 조립이 어려워 생산성이 떨어진다는 문제점이 있다.In particular, when the diameter and height of the electrical connection terminal are each small size of 1 mm or less, since each component has a small dimension, there is a problem in that it is difficult to manufacture and difficult to assemble, resulting in poor productivity.
더욱이 구조적으로 직경 또는 폭이 0.8㎜ 이하인 제품을 경제성 있게 제조하기에는 어렵고, 크기에 비해 작동거리를 크게 하기에는 한계가 있다는 단점이 있다.Moreover, it is difficult to economically manufacture a product having a diameter or width of 0.8 mm or less economically, and there is a limitation in that the working distance is large compared to the size.
다른 종래 기술로 국내 특허 제1330999호에 의하면, 상부탐침부의 하단부에 속이 빈 원통형의 개구부가 형성되고, 하부탐침부는 개구부에 삽입되는 삽입부를 포함하며, 스프링이 삽입부를 감싸고 양단이 상부 및 하부탐침부에 고정되고, 상부탐침부, 하부탐침부 및 스프링이 일체로 구성된 탐침부 연결형 포고핀이 개시된다.According to another conventional technology, according to Korean Patent No. 1330999, a hollow cylindrical opening is formed at the lower end of the upper probe part, and the lower probe part includes an insertion part inserted into the opening part, and a spring surrounds the insertion part and both ends of the upper and lower probe parts. The probe connected pogo pin is fixed to, and the upper probe portion, the lower probe portion and the spring is integrally configured.
이러한 포고핀은 금형비가 비싸고 하나의 금형으로 하나의 제품만을 생산할 수 있으므로 다양한 특성을 갖는 전기접속단자를 경제성 있게 제공하기 어려웠고, 또한 폭과 높이가 각각 0.5㎜ 이하인 제품을 제조하기 어렵다는 단점이 있다.Since the pogo pin is expensive to mold and only one product can be produced by one mold, it is difficult to economically provide electrical connection terminals having various characteristics, and it is difficult to manufacture products having widths and heights of 0.5 mm or less, respectively.
본 발명의 목적은 크기가 작으면서, 특히 높이가 낮으면서 구조가 간단하고 제조가 용이한 전기접속단자를 제공하는 것이다.It is an object of the present invention to provide an electrical connection terminal which is small in size, particularly low in height, simple in structure and easy to manufacture.
본 발명의 다른 목적은 신뢰성 있고 낮은 전기저항을 가지며 탄성 및 탄성 복원력이 좋고 누르는 힘이 적게 드는 전기접속단자를 제공하는 것이다.It is another object of the present invention to provide an electrical connection terminal which is reliable, has low electrical resistance, has good elasticity and elastic restoring force, and has low pressing force.
본 발명의 다른 목적은 대상물과 전기적, 기구적 접촉이 용이하고 작동거리가 큰 전기접속단자를 제공하는 것이다.Another object of the present invention is to provide an electrical connection terminal that is easy to be in electrical and mechanical contact with an object and has a large working distance.
본 발명의 다른 목적은 기구물에 장착하기 용이하며 내환경성이 우수한 전기접속단자를 제공하는 것이다.Another object of the present invention is to provide an electrical connection terminal that is easy to be mounted on an appliance and has excellent environmental resistance.
본 발명의 다른 목적은 대향하는 대상물에 상처나 흠집을 적게 만드는 전기접속단자를 제공하는 것이다.It is another object of the present invention to provide an electrical connection terminal which makes less scratches or scratches on an opposing object.
본 발명의 다른 목적은 진공 픽업에 의한 리플로우 솔더링이 용이한 전기접속단자를 제공하는 것이다.Another object of the present invention is to provide an electrical connection terminal that is easy to reflow soldering by vacuum pickup.
본 발명의 다른 목적은 작은 치수를 가지면서 탄성 복원력, 누르는 힘, 작동 거리 및 상하 전기저항 등의 기계적 및 전기적 특성의 변경이 경제성 있게 용이한 전기접속단자를 제공하는 것이다.Another object of the present invention is to provide an electrical connection terminal having a small dimension and economically easy to change mechanical and electrical properties such as elastic restoring force, pressing force, working distance and vertical electrical resistance.
본 발명의 다른 목적은 스프링에 형성된 인덕턴스 값과 전기저항을 줄여 줄 수 있는 전기접속단자를 제공하는 것이다.Another object of the present invention is to provide an electrical connection terminal that can reduce the inductance value and electrical resistance formed in the spring.
본 발명의 다른 목적은 외부의 충격에 의해 스프링의 파손을 최소화할 수 있는 전기접속단자를 제공하는 것이다.Another object of the present invention is to provide an electrical connection terminal that can minimize the breakage of the spring by an external impact.
상기의 목적은, 전기전도성 대상물 사이에 개재되어 상기 대상물을 서로 전기적으로 연결하는 전기접속단자로서, 금속 재질의 스프링; 및 상기 스프링의 적어도 하나의 단부에 접착되어 형성되고, 상기 대상물에 전기적으로 접촉하는 전기전도성 접촉부를 포함하며, 상기 접촉부는, 액상의 폴리머 수지에 금속 파우더가 혼합된 액상의 전기전도성 재료가 상기 스프링의 단부를 감싸 경화되거나 상기 스프링의 단부 구멍에 유입 경화되어 형성되는 것을 특징으로 하는 전기접속단자에 의해 달성된다.The above object is an electrical connection terminal interposed between electrically conductive objects to electrically connect the objects to each other, comprising: a spring made of metal; And an electroconductive contact portion formed to be adhered to at least one end of the spring and electrically contacting the object, wherein the contact portion includes a liquid electroconductive material in which a metal powder is mixed with a liquid polymer resin. It is achieved by an electrical connection terminal, characterized in that formed by wrapping the end of the hardened or inlet hardened in the end hole of the spring.
바람직하게, 상기 접촉부는 상기 스프링의 일단에 형성되고, 상기 스프링의 타단은 금속 재질의 홀더 컵에 수용되어 결합된다.Preferably, the contact portion is formed at one end of the spring, the other end of the spring is received and coupled to the holder cup of the metal material.
상기의 목적은, 전기전도성 대상물 사이에 개재되어 상기 대상물을 서로 전기적으로 연결하는 전기접속단자로서, 금속 재질의 탄성 코일 스프링; 상기 스프링의 일단에 전기전도성 접착제를 개재하여 접착되는 금속 재질의 캡; 및 상기 스프링의 타단에 전기적으로 결합되는 금속 재질의 홀더 컵을 포함하며, 상기 홀더 컵의 높이는 상기 스프링 높이의 1/2 이하이고, 상기 홀더 컵의 외면은 솔더링이 가능한 도금층이 형성된 것을 특징으로 하는 전기접속단자에 의해 달성된다.The above object is an electrical connection terminal interposed between electrically conductive objects to electrically connect the objects to each other, the elastic coil spring of a metal material; A metal cap adhered to one end of the spring via an electrically conductive adhesive; And a holder cup of a metal material electrically coupled to the other end of the spring, wherein the height of the holder cup is 1/2 or less of the spring height, and an outer surface of the holder cup is formed with a solderable plating layer. Achieved by an electrical connection terminal.
상기의 목적은, 전기전도성 대상물 사이에 개재되어 상기 대상물을 서로 전기적으로 연결하는 전기접속단자로서, 금속 재질의 탄성 코일 스프링; 상기 스프링의 일단에 전기전도성 접착제를 개재하여 접착되는 금속 재질의 캡; 및 상기 스프링의 타단에 접착되어 형성되고, 상기 대상물에 솔더링에 의해 고정되는 전기전도성 접촉부를 포함하며, 상기 접촉부는, 액상의 폴리머 수지에 금속 파우더가 혼합된 액상의 전기전도성 재료가 상기 스프링의 단부를 감싸 경화되거나 상기 스프링의 단부 구멍에 유입 경화되어 형성되는 것을 특징으로 하는 전기접속단자에 의해 달성된다.The above object is an electrical connection terminal interposed between electrically conductive objects to electrically connect the objects to each other, the elastic coil spring of a metal material; A metal cap adhered to one end of the spring via an electrically conductive adhesive; And an electroconductive contact portion formed by being bonded to the other end of the spring and fixed to the object by soldering, wherein the contact portion includes a liquid electroconductive material in which a metal powder is mixed with a liquid polymer resin at an end portion of the spring. It is achieved by the electrical connection terminal characterized in that it is formed by encapsulating the hardening or inflow hardening in the end hole of the spring.
상기의 구조에 의하면, 탄성 및 탄성 복원력이 좋고 전기 저항이 낮은 금속 스프링과 그 양단부나 일단부에 형성된 전기저항이 낮은 도전성 접촉부로 구성되어 크기를 아주 작게 하고, 특히 높이를 낮게 하기 용이하고 구조가 간단하여 제조가 용이하며, 작은 치수에서도 탄성 및 탄성 복원력이 좋고 전기저항이 낮다는 이점이 있다.According to the above structure, it is composed of a metal spring having good elasticity and elastic restoring force and low electrical resistance, and a conductive contact portion having low electrical resistance formed at both ends or one end thereof. It is simple and easy to manufacture, and has the advantages of good elasticity and elastic restoring force and low electrical resistance even in small dimensions.
또한, 스프링의 단부를 액상의 전기전도성 재료를 디핑 또는 함침한 후 경화에 의해 굳혀서 전기전도성 접촉부를 형성하기 때문에 제조가 용이하며 전기전도성 접촉부가 형성이 안 된 스프링의 탄성부는 적은 힘에도 잘 눌리며 좋은 탄성 및 탄성 복원력을 제공한다.In addition, since the end of the spring is dipped or impregnated with a liquid electroconductive material and then hardened by hardening to form an electroconductive contact portion, it is easy to manufacture and the elastic portion of the spring in which the electroconductive contact portion is not formed is pressed well with a small force. Provides good elasticity and elastic resilience.
또한, 스프링의 단부 구멍을 막는 전기전도성 접촉부는 진공 픽업을 용이하게 해주며, 대향하는 대상물과 접촉면적을 크게 해주어 결과적으로 전기접촉저항을 작게 해준다.In addition, the electrically conductive contact blocking the end hole of the spring facilitates the vacuum pick-up, increases the contact area with the opposing object and consequently reduces the electrical contact resistance.
또한, 전기전도성 접촉부의 형상이 중앙을 향해 약간 파인 형상 또는 약간 볼록한 형상으로 되어 대향하는 대상물과 안정적인 물리적 또는 전기적 접촉을 제공하기 용이하다.In addition, the shape of the electroconductive contact portion may be slightly indented or slightly convex toward the center to facilitate stable physical or electrical contact with the opposing object.
또한, 스프링과 전기전도성 접촉부의 재료, 구조, 치수 및 형상 등을 적절히 조정하거나, 도금층의 두께를 조정하여 누르는 힘, 탄성 복원력 및 전기저항을 용이하게 조정할 수 있으며 스프링의 지지부와 탄성부의 치수를 조정하여 작동거리를 조정하기 용이하다.In addition, the material, structure, dimensions and shape of the spring and the electrically conductive contact portion can be adjusted appropriately, or the pressing force, elastic restoring force and electrical resistance can be easily adjusted by adjusting the thickness of the plating layer, and the dimensions of the spring support portion and the elastic portion can be adjusted. It is easy to adjust the working distance.
또한, 전기전도성 접촉부의 재료의 강도가 스프링 재료의 강도보다 낮아 대향하는 대상물에 상처나 흠집을 적게 제공한다는 이점이 있다.In addition, the strength of the material of the electroconductive contact portion is lower than that of the spring material, which has the advantage of providing less scratches or scratches to the opposing object.
또한, 스프링과 전기전도성 접촉부의 외면 전체에 내환경성 및 전기전도성이 좋고 솔더링이 가능한 금속층을 도금에 의해 형성하므로 상하 전기저항이 더욱 낮아지고, 내환경성이 더욱 좋아지고 솔더링이 용이해진다는 이점이 있다.In addition, since the metal layer, which is solderable and has excellent environmental resistance and electrical conductivity, is formed on the entire outer surface of the spring and the electrically conductive contact portion, the upper and lower electrical resistance is lower, the environmental resistance is better, and the soldering is easy. .
또한, 스프링의 탄성부에 접착되어 형성된 탄성을 갖는 고무층은 외부의 충격으로부터 스프링을 보호해주고 솔더링 시 솔더링 높이를 제어해주며, 특히 전기전도성이 있는 경우 스프링 사이에 형성되는 인덕턴스 값을 줄여주고 전기접속단자의 상하 전기저항을 줄여준다.In addition, the elastic rubber layer formed by adhering to the elastic part of the spring protects the spring from external impact and controls the soldering height during soldering, and in particular, in the case of electrical conductivity, reduces the inductance value formed between the springs and makes electrical connections. Reduce the upper and lower electrical resistance of the terminal.
또한, 홀더 컵에 의해 솔더링이 더 용이하면서 솔더링 강도가 좋고 진공 픽업에 의한 리플로우 솔더링 시 흔들림이 적고 안정적인 리플로우 솔더링을 제공할 수 있다.In addition, the holder cups can be more easily soldered, have good soldering strength, and can provide stable reflow soldering with less shaking during reflow soldering by vacuum pickup.
또한, 홀더 컵은 외부 힘에 의한 스프링의 변형을 줄여주는 역할을 한다는 이점이 있다. In addition, the holder cup has the advantage that serves to reduce the deformation of the spring by the external force.
또한, 다양한 홀더 컵의 구조에 의해 전기접촉단자를 용도에 맞게 다양하게 제조할 수 있고 소켓 등에 용이하게 끼워서 사용하기 유리하다.In addition, the structure of the various holder cups can be variously manufactured according to the purpose of the electrical contact terminal, it is advantageous to use easily inserted into the socket.
또한, 홀더 컵에 의해 상하 전기저항을 줄여 줄 수 있다는 이점이 있다.In addition, there is an advantage that the upper and lower electrical resistance can be reduced by the holder cup.
도 1은 본 발명의 일 실시 예에 따른 전기접속단자를 나타낸다.1 shows an electrical connection terminal according to an embodiment of the present invention.
도 2는 도 1을 수직으로 절단한 단면도이다.FIG. 2 is a cross-sectional view of FIG. 1 cut vertically.
도 3은 실제 제품을 위한 사진 이미지이다.3 is a photographic image for the actual product.
도 4는 본 발명의 다른 실시 예에 따른 전기접속단자를 나타낸다.4 shows an electrical connection terminal according to another embodiment of the present invention.
도 5는 본 발명의 다른 실시 예에 따른 전기접속단자를 나타낸다.5 shows an electrical connection terminal according to another embodiment of the present invention.
도 6은 본 발명의 다른 실시 예에 따른 전기접속단자를 나타낸다.6 shows an electrical connection terminal according to another embodiment of the present invention.
도 7은 도 6의 전기접속단자를 수직으로 절단한 단면도이다.FIG. 7 is a cross-sectional view of the electrical connection terminal of FIG. 6 cut vertically.
도 8(a) 내지 8(e)은 각각 본 발명의 다른 실시 예에 따른 전기접속단자를 나타낸다.8 (a) to 8 (e) show an electrical connection terminal according to another embodiment of the present invention, respectively.
이하 첨부된 도면을 참조하여 본 발명의 실시 예에 따른 전기접속단자를 구체적으로 설명한다.Hereinafter, an electrical connection terminal according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명의 일 실시 예에 따른 전기접속단자를 나타내고, 도 2는 도 1을 수직으로 절단한 단면도이며, 도 3은 실제 제품을 위한 사진 이미지이다.1 is a view illustrating an electrical connection terminal according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of FIG. 1 taken vertically, and FIG. 3 is a photographic image for an actual product.
전기접속단자(100)는 탄성이 좋은 금속 재질의 스프링(110)과, 스프링(110)의 양단에 접착되어 형성된 전기전도성을 갖는 접촉부(120, 130)로 이루어진다.The electrical connection terminal 100 includes a spring 110 made of a metal having good elasticity, and contact portions 120 and 130 having electrical conductivity formed by being bonded to both ends of the spring 110.
이러한 구조에 의하면, 전기접속단자(100)가 서로 대향하는 전기전도성 대상물 사이에 위치하여 스프링(110)의 압축과 복원에 의해 대상물을 탄성적으로 전기적으로 연결시킨다.According to this structure, the electrical connection terminal 100 is located between the electrically conductive objects facing each other to elastically and electrically connect the object by compression and restoration of the spring 110.
전기전도성 대상물로는, 가령 회로기판의 도전패턴과 스피커 단자가 있을 수 있는데, 이 경우 도전성 접촉부(120)는 회로기판의 도전패턴에 솔더링 등에 의해 고정되고 스피커 단자가 도전성 접촉부(130)를 가압 접촉하여 탄성에 의해 회로기판의 도전패턴과 스피커 단자를 전기적으로 연결시킬 수 있다.Examples of the electrically conductive object may include a conductive pattern and a speaker terminal of the circuit board. In this case, the conductive contact part 120 is fixed to the conductive pattern of the circuit board by soldering or the like, and the speaker terminal presses the conductive contact part 130. Thus, the conductive pattern of the circuit board and the speaker terminal can be electrically connected by elasticity.
특별히 한정하지는 않지만 전기접속단자(100)의 크기는 내경이 0.10㎜ 내지 1.5㎜이고 높이는 0.3㎜ 내지 1.5㎜일 수 있으며, 전기접속단자(100)의 누르는 힘은 2gf 내지 80gf 일 수 있고, 전기접속단자(100)의 작동거리는 최초 높이의 40% 이상일 수 있다.Although not particularly limited, the size of the electrical connection terminal 100 may have an inner diameter of 0.10 mm to 1.5 mm and a height of 0.3 mm to 1.5 mm, and the pressing force of the electrical connection terminal 100 may be 2gf to 80gf, and electrical connection The working distance of the terminal 100 may be 40% or more of the initial height.
작은 치수의 스프링(110)은 코일 형상으로 제조하기 용이하며, 가령 전기접속단자(100)의 전체적인 형상은 원기둥 형상일 수 있다. Spring 110 having a small dimension is easy to manufacture in the coil shape, for example, the overall shape of the electrical connection terminal 100 may be a cylindrical shape.
도 2를 참조하면, 스프링(110)은 중간 부분에 일정한 피치로 감긴 탄성부(112)와 탄성부(112)의 양단에 감겨 형성된 지지부(114, 116)로 구성된다.Referring to FIG. 2, the spring 110 includes an elastic portion 112 wound around a middle portion at a constant pitch and support portions 114 and 116 formed around both ends of the elastic portion 112.
이 예에서, 탄성부(112)는 2 ~ 2.5턴 정도로 형성되고, 지지부(114, 116)는 1 ~ 1.5턴 정도로 형성된다.In this example, the elastic portion 112 is formed on the order of 2 to 2.5 turns, and the support portions 114 and 116 are formed on the order of 1 to 1.5 turns.
스프링(110)의 치수는, 가령 높이가 0.95㎜, 턴(turn) 외경이 0.63㎜, 그리고 탄성부(112)의 피치가 0.25㎜일 수 있으며, 이에 한정되지 않는다.The spring 110 may have a height of 0.95 mm, a turn outer diameter of 0.63 mm, and a pitch of the elastic part 112 of 0.25 mm, but is not limited thereto.
스프링(110)은, 가령 단면이 원형이고 선 직경이 0.01㎜ 내지 0.15㎜인 기계적 강도가 크고 탄성이 좋은 인청동 선이나 베릴동 선 등의 구리 합금선 또는 스테인리스 선(Stainless wire), 피아노 선(Piano wire) 등의 철 합금선을 코일(coil) 형상으로 감아 만들 수 있다.The spring 110 is, for example, a copper alloy wire or stainless steel wire such as a phosphor bronze wire or a beryl copper wire having a high mechanical strength and good elasticity having a circular cross section and a wire diameter of 0.01 mm to 0.15 mm, and a piano wire. Iron alloy wire such as wire can be wound into a coil shape.
스프링(110)의 외면은 전기전도성 및 내 환경성이 좋은 니켈/금 또는 니켈/팔라듐(Pd)이 순차적으로 도금될 수 있으며, 특히 기계적인 특성은 좋으나 전기저항이 큰 스테인리스 선(Stainless wire)이나 피아노 선(Piano wire) 선 위에는 전기전도성이 좋은 구리나 금을 두껍게 도금하여 전체적으로 전기저항을 낮출 수 있다.The outer surface of the spring 110 may be sequentially plated with nickel / gold or nickel / palladium (Pd) having good electrical conductivity and environmental resistance. In particular, the mechanical properties of the spring 110 may be stainless steel wire or piano with high electrical resistance. Piano wire Wire can be plated with thick copper or gold with good electrical conductivity to lower the overall electrical resistance.
상기한 것처럼, 스프링(110)의 형상은 작은 치수로 제조가 용이한 코일 형상일 수 있는데, 탄성부(112)와 지지부(114, 116) 각각의 턴 직경이 동일하도록 하거나 상대적으로 다르도록 할 수 있다.As described above, the shape of the spring 110 may be a coil shape that is easy to manufacture with a small size, so that the turn diameter of each of the elastic portion 112 and the support portions 114 and 116 may be the same or relatively different. have.
스프링(110)를 구성하는 탄성부(112)의 턴 수는 한정되지 않지만 작동거리를 크게 하기 위해서 2턴 이상일 수 있으며, 탄성부(112)의 피치는 일정한 탄성력을 확보하기 위해서 적절하게 설계될 수 있다.The number of turns of the elastic part 112 constituting the spring 110 is not limited, but may be two or more turns to increase the working distance, and the pitch of the elastic part 112 may be appropriately designed to secure a constant elastic force. have.
지지부(114, 116)는 지지 강도를 향상시키고, 후술하는 것처럼, 접촉부(120, 130)가 신뢰성 있게 형성되도록 피치를 없애 인접하는 턴이 서로 접촉되도록 할 수 있다.The support portions 114 and 116 may improve support strength and eliminate pitches so that the contact portions 120 and 130 are formed reliably, as described below, so that adjacent turns may contact each other.
전기접속단자(100)의 작동거리를 크게 하기 위해서 지지부(114, 116)의 높이는 탄성부(112)의 높이보다 작게 형성되며, 접촉부(120, 130) 간의 이격 거리는 전기접속단자(100) 높이의 1/2 이상일 수 있다.In order to increase the working distance of the electrical connection terminal 100, the height of the support parts 114 and 116 is formed smaller than the height of the elastic part 112, and the separation distance between the contact parts 120 and 130 is the height of the electrical connection terminal 100. It may be 1/2 or more.
도 1을 참조하면, 접촉부(120, 130)는, 경화 후 접착력을 갖는 액상의 폴리머 수지에 전기전도성 금속 파우더를 혼합한 액상의 전기전도성 재료에 스프링(110)의 양단을 각각 수직 방향으로 디핑(dipping) 한 후 꺼내어 경화함으로써 형성된다. 여기서, 액상의 전기전도성 재료는 열 또는 자외선에 의해 경화되면서 스프링(110)에 접착된다.Referring to FIG. 1, the contact parts 120 and 130 may respectively dip the both ends of the spring 110 in a vertical direction in a liquid conductive material in which a conductive polymer powder is mixed with a liquid polymer resin having an adhesive strength after curing ( It is formed by dipping) and then taken out and cured. Here, the liquid electroconductive material is bonded to the spring 110 while being cured by heat or ultraviolet rays.
디핑 방법 이외에 함침에 의해 스프링(110)의 단부 구멍(111) 내부에 액상의 전기전도성 재료가 유입되어 경화될 수 있다. 이 경우, 액상의 전기전도성 재료는 지지부(114, 116)에 대응하는 높이로 단부 구멍(111) 내부로 유입되며, 지지부(114, 116)에서 턴 사이의 틈새를 통하여 외부로 누출될 수 있다.In addition to the dipping method, a liquid electroconductive material may be introduced into the end hole 111 of the spring 110 by an impregnation to be cured. In this case, the liquid electroconductive material flows into the end hole 111 at a height corresponding to the support portions 114 and 116, and may leak to the outside through the gap between the turns in the support portions 114 and 116.
어느 경우든, 접촉부(120, 130)는 스프링(110) 단부에 형성된 구멍을 막으며 형성될 수 있다.In any case, the contact portions 120 and 130 may be formed by blocking a hole formed at the end of the spring 110.
폴리머 수지의 경화에 의해 형성되는 접촉부(120, 130)가 스프링(110)보다 낮은 기계적 경도(강도)를 갖도록 함으로써, 대향하는 대상물에 상처나 흠집을 남기지 않도록 할 수 있다. By making the contact portions 120 and 130 formed by curing of the polymer resin have a lower mechanical hardness (strength) than the spring 110, it is possible to prevent a wound or a scratch on the object to be opposed.
전기접속단자(100)의 상하방향의 전기저항은 특별히 한정되지 않지만 0.5 ohm 이하인 것이 바람직하며, 스프링(110)이 압축될수록 일부 조금 감소할 수 있는데, 통상의 어떠한 조건에서도 0.5 ohm 이하로 유지하는 것이 좋다.The electrical resistance of the electrical connection terminal 100 in the up and down direction is not particularly limited, but is preferably 0.5 ohm or less, and may be slightly reduced as the spring 110 is compressed, but it may be maintained at 0.5 ohm or less even under normal conditions. good.
상기한 것처럼, 접촉부(120, 130)는 스프링(110)의 지지부(114, 116)를 액상의 전기전도성 재료에 디핑(dipping) 한 후 꺼내어 경화함으로써 형성하는데, 전기전도성 재료는 솔더링에 견디는 내열성을 갖는 에폭시 수지, 폴리이미드 수지와 같은 폴리머 수지, 또는 실리콘 고무와 같은 탄성고무의 액상 재료에 전기전도성이 좋은 은 등의 금속 파우더를 혼합하여 구성할 수 있으며, 경화 후 스프링(110)과 접착력을 갖는다.As described above, the contact portions 120 and 130 are formed by dipping the support portions 114 and 116 of the spring 110 into a liquid electroconductive material and then taking out and curing the electroconductive material, which is heat resistant to soldering. It can be configured by mixing a metal powder such as silver with good electrical conductivity to a liquid material of an epoxy resin, a polymer resin such as polyimide resin, or an elastic rubber such as silicone rubber, and has an adhesive force with the spring 110 after curing. .
접촉부(120, 130)는 모두 전기전도성 에폭시수지나 전기전도성 폴리이미드 수지로 구성되는 것이 바람직하지만, 접촉부(120, 130) 중 어느 하나가 전기전도성 에폭시 수지 또는 전기전도성 폴리이미드 수지로 구성되고 다른 하나는 전기전도성 실리콘고무로 구성될 수 있으며, 이 경우 어느 하나의 접촉부(120, 130)는 솔더링에 의해 하나의 대상물에 고정되고 다른 하나의 접촉부(120, 130)는 물리적인 압력에 의해 다른 대상물과 접촉할 수 있다.Preferably, the contacts 120 and 130 are all composed of an electrically conductive epoxy resin or an electrically conductive polyimide resin, but either one of the contacts 120 and 130 is composed of an electrically conductive epoxy resin or an electrically conductive polyimide resin and the other May be composed of an electrically conductive silicone rubber, in which case one of the contacts (120, 130) is fixed to one object by soldering and the other of the contacts (120, 130) by physical pressure and other objects Can be contacted.
또한, 접촉부(120, 130)가 실리콘 고무로 구성되는 경우, 경화 후 탄성이 있고 경도(강도)가 낮으므로 대향하는 대상물에 상처를 적게 주며 탄성을 갖고 전기접촉한다는 이점이 있다.In addition, when the contact portions 120 and 130 are made of silicone rubber, since the elasticity after curing and the hardness (lower strength) are low, there is an advantage of reducing scratches on the opposing objects and having electrical contact with elasticity.
여기서, 경화는 고온의 열 또는 자외선(UV) 등에 의해 이루어진다.Here, curing is performed by high temperature heat or ultraviolet (UV).
잘 알려진 것처럼, 액상의 도전성 수지나 도전성 고무는 액상의 수지 또는 고무에 은(Silver) 또는 은이 도금된 구리 등의 도전성 입자를 충분히 많이 혼합하여 형성하는데, 가령 물엿보다 조금 진한 정도의 점도를 갖도록 할 수 있다.As is well known, liquid conductive resins or conductive rubbers are formed by mixing a sufficient amount of conductive particles such as silver or silver plated copper with liquid resins or rubbers, for example, to have a viscosity slightly higher than starch syrup. Can be.
따라서, 스프링(110)의 지지부(114, 116)를 액상의 전기전도성 재료에 수직으로 디핑한 후 꺼내면, 지지부(114, 116)의 외측면을 따라 액상의 전기전도성 재료가 흘러 경화됨으로써, 도 1과 3에 도시한 것처럼, 접촉부(120, 130)의 외측면에 굴곡진 부분이 형성된다.Accordingly, when the support parts 114 and 116 of the spring 110 are vertically dipped out of the liquid electroconductive material and then taken out, the liquid electroconductive material flows and hardens along the outer surfaces of the support parts 114 and 116, thereby FIG. 1. As shown in and 3, the bent portion is formed on the outer surface of the contact portion (120, 130).
반면, 상기한 함침에 의할 경우, 액상의 전기전도성 재료가 스프링(110)의 단부 구멍(111) 내부에만 유입되어 경화되도록 함으로써 지지부(114, 116)의 외측에 액상의 전기전도성 재료가 흘러 경화되지 않도록 할 수 있다.On the other hand, in the case of the impregnation, the liquid electroconductive material flows to the outside of the support parts 114 and 116 by curing only the liquid electroconductive material flows into the inside of the end hole 111 of the spring 110 and cures. You can prevent it.
이와 같은 디핑은 한 번 또는 다수 회 수행할 수 있는데, 액상의 전기전도성 재료의 점도와 종류, 스프링의 단부 구멍의 크기와 형상, 금속 파우더의 크기와 형상, 및 도전성 접촉부의 형상에 따라 수행 조건이 달라질 수 있으므로 이들을 적절하게 조절하면서 수행할 수 있다.Such dipping may be performed once or multiple times, depending on the viscosity and type of the liquid conductive material, the size and shape of the end hole of the spring, the size and shape of the metal powder, and the shape of the conductive contact. As these can vary, they can be performed with appropriate adjustments.
예들 들어, 스프링(110)의 단부 구멍(111)의 직경이 약 0.8㎜로 비교적 큰 경우에는 점도가 높고 비교적 크기가 큰 금속 파우더를 사용하고 비교적 점도도 높게 하여 도전성 접촉부(120, 130)를 형성할 수 있다.For example, when the diameter of the end hole 111 of the spring 110 is relatively large, about 0.8 mm, the conductive contacts 120 and 130 are formed by using a metal powder having a high viscosity and a relatively large size and having a relatively high viscosity. can do.
스프링(110)의 지지부(114, 116)를 액상의 전기전도성 재료에 수직으로 디핑한 후 꺼내면, 반경화 상태에서 스프링(110)의 단부 구멍(111)을 막으며 접촉부(120, 130)가 형성되는데, 이때 중력에 의해 스프링(110)의 단부 구멍(111)으로부터 하방으로 돌출된다.When the support portions 114 and 116 of the spring 110 are vertically dipped into the liquid electroconductive material and then taken out, the contacts 120 and 130 are formed while blocking the end holes 111 of the spring 110 in a semi-cured state. At this time, it protrudes downward from the end hole 111 of the spring 110 by gravity.
이 실시 예에서는, 하방으로 돌출된 접촉부(120, 130)를 대략 수평으로 압착하여 접촉부(120, 130)의 상면과 하면이 수평을 이루도록 하고 있지만, 이와 달리 하방으로 돌출되어 단부 구멍(111)의 중앙을 향해 약간 외측으로 돌출되는 형상(반구 형상)으로 단부면(121, 131)을 형성할 수 있다.In this embodiment, the contact portions 120 and 130 protruding downward are compressed substantially horizontally so that the upper and lower surfaces of the contact portions 120 and 130 are horizontal. However, the upper and lower surfaces of the end holes 111 protrude downward. The end faces 121 and 131 can be formed in a shape (semi-spherical shape) projecting slightly outward toward the center.
이와 같이 스프링(110)의 단부 구멍(111)이 접촉부(120, 130)에 의해 막히고 접촉부(120, 130)의 단부면(121, 131)이 중앙을 향해 약간 외측으로 돌출되면 대향하는 대상물과 전기접촉하기 용이하면서 진공 픽업도 가능하다.As such, when the end hole 111 of the spring 110 is blocked by the contact portions 120 and 130 and the end surfaces 121 and 131 of the contact portions 120 and 130 protrude slightly outward toward the center, the opposite object and the electric Vacuum pick-up is also possible while being easy to contact.
이와 반대로 스프링(110)의 지지부(114, 116)를 액상의 전기전도성 재료에 수직으로 디핑한 후 꺼내어 반경화 상태에서 스프링(110)을 180도 반대 방향으로 돌려 경화하면, 스프링(110)의 단부 구멍(111)을 막으면서 접촉부(120, 130)가 형성되는데, 접촉부(120, 130)의 단부면(121, 131)은 자중에 의해 단부 구멍(111)에서 중앙을 향해 약간 움푹 파인 형상(반구 형상)이 된다.On the contrary, when the support parts 114 and 116 of the spring 110 are vertically dipped into the liquid electroconductive material and then taken out, and the spring 110 is hardened by turning the spring 110 in the opposite direction in the semi-cured state, the end of the spring 110 is hardened. Contact portions 120 and 130 are formed while blocking the holes 111. The end surfaces 121 and 131 of the contact portions 120 and 130 are slightly recessed toward the center from the end holes 111 due to their own weight (semi-spherical). Shape).
이와 같이 중앙을 향해 움푹 파인 형상의 접촉부(120, 130)의 단부면(121, 131)은, 가령 대상물이 솔더 볼(solder ball)인 경우 솔더 볼의 둥근 외면과 많은 접촉면적을 확보할 수 있어 결과적으로 전기접촉저항이 작게 되면서 진공 픽업도 가능하다.As such, the end faces 121 and 131 of the contact portions 120 and 130 recessed toward the center can secure a large contact area with the round outer surface of the solder ball, for example, when the object is a solder ball. As a result, a vacuum pick-up is possible while the electrical contact resistance becomes small.
이 상태에서 완전 경화함으로써 전기접속단자(100)를 제조하며, 이후 바람직하게 전체를 니켈/금 또는 니켈/팔라듐으로 도금할 수 있다.The electrical connection terminal 100 is manufactured by completely curing in this state, and preferably, the whole may be plated with nickel / gold or nickel / palladium.
예를 들어, 스프링(110)과 접촉부(120, 130) 위에 경도가 높은 니켈을 1차 도금한 후 전기전도도와 내환경성이 좋고 솔더링이 잘되는 금을 2차 도금할 수 있다.For example, after first plating nickel having a high hardness on the spring 110 and the contacts 120 and 130, gold having a good electrical conductivity and environmental resistance and having good soldering may be second plated.
특히, 기계적 강도가 높은 니켈 도금층의 두께를 조정하여 전기접속단자(100)의 압축력과 복원력을 조정하거나 전기접속단자(100)의 강도를 조절할 수 있고, 전기전도성이 좋은 금 도금층의 두께를 조정하여 전기접속단자(100)의 상하방향 전기저항을 조정할 수 있다.In particular, by adjusting the thickness of the nickel plating layer having a high mechanical strength, the compression and restoring force of the electrical connection terminal 100 can be adjusted, or the strength of the electrical connection terminal 100 can be adjusted, and the thickness of the gold plating layer having good electrical conductivity can be adjusted. The up and down electrical resistance of the electrical connection terminal 100 can be adjusted.
이 실시 예에서, 접촉부(120, 130)에 의해 스프링(110)의 단부 구멍(111)이 막히는 것을 예로 들었지만, 이에 한정되지 않고 접촉부(120, 130)의 단부면(121, 131) 중앙에 단부 구멍(111)에 비해 작은 관통 구멍이 형성될 수 있다.In this embodiment, although the end holes 111 of the spring 110 are blocked by the contact portions 120 and 130 as an example, the present invention is not limited thereto, and the center portion of the end portions 121 and 131 of the contact portions 120 and 130 end portions thereof. A smaller through hole may be formed than the hole 111.
전기접속단자(100)는 캐리어에 릴 테이핑되고, 접촉부(120, 130) 중 어느 하나의 단부면(121, 131)에 진공 픽업이 가능한 평면이 구비되어 해당 단부면(121, 131)에서 진공 픽업되어 표면실장되고 반대쪽 단부면(121, 131)에서 솔더 크림에 의한 리플로우 솔더링이 수행될 수 있다. 또한, 이에 한정되지 않고 전기접속단자(100)가 기구물, 가령 단자 테스트용 소켓에 끼워져 사용될 수 있다. Electrical connection terminal 100 is reel taped to the carrier, the end surface (121, 131) of any one of the contact portion 120, 130 is provided with a plane that can be picked up vacuum pick-up at the end surface (121, 131) Surface mount and reflow soldering by solder cream on opposite end surfaces 121, 131. In addition, the present invention is not limited thereto, and the electrical connection terminal 100 may be used by being inserted into a fixture such as a terminal test socket.
도 4는 본 발명의 다른 실시 예에 의한 전기접속단자를 나타낸다.4 shows an electrical connection terminal according to another embodiment of the present invention.
이 실시 예에서, 전기접속단자(200)의 전기전도성 접촉부(220)는 스프링(210)의 상단에만 형성된다.In this embodiment, the electrically conductive contact portion 220 of the electrical connection terminal 200 is formed only at the upper end of the spring (210).
접촉부가 형성되지 않은 스프링(210)의 하단은, 가령 솔더 크림에 의한 솔더링 등에 의해 대상물, 가령 회로기판에 고정될 수 있으며, 이에 한정되지 않는다.The lower end of the spring 210, in which the contact is not formed, may be fixed to an object such as a circuit board by soldering, for example, by solder cream, but is not limited thereto.
도 5는 본 발명의 다른 실시 예에 의한 전기접속단자를 나타낸다.5 shows an electrical connection terminal according to another embodiment of the present invention.
이 실시 예에 의하면, 스프링(310)의 탄성부(312)에는 탄성 고무층(350, 352), 가령 실리콘 고무층이 접착 형성된다.According to this embodiment, elastic rubber layers 350 and 352, for example, silicone rubber layers, are adhesively formed on the elastic portion 312 of the spring 310.
탄성 고무층(350, 352)은, 접촉부(320, 330)를 형성한 후 스프링(310)의 탄성부(312)에 액상의 실리콘 고무를 바늘 등을 사용하여 도포한 후 이를 경화하여 형성할 수 있으나 이에 한정하지는 않는다.The elastic rubber layers 350 and 352 may be formed by applying a liquid silicone rubber to the elastic portion 312 of the spring 310 by using a needle or the like after forming the contact portions 320 and 330. It is not limited to this.
접촉부(320, 330)가 하나만 형성된 경우 접촉부(320, 330)가 형성되지 않은 스프링(310)의 부분을 액상의 실리콘 고무에 디핑하고 경화한 다음 접촉부(320, 330)가 형성되지 않은 단부에 형성된 탄성 고무층을 연삭 등에 의해 제거하면 스프링(310)의 단부가 외부로 노출된다.If only one contact portion 320, 330 is formed, the part of the spring 310, in which the contact portion 320, 330 is not formed, is dipped into the liquid silicone rubber and cured, and then formed at the end where the contact portion 320, 330 is not formed. When the elastic rubber layer is removed by grinding or the like, the end portion of the spring 310 is exposed to the outside.
이후 니켈/금 등을 전기 도금하면 탄성 고무층(350, 352)에는 도금이 되지 않으므로 탄성 고무층이 형성된 탄성부(312)는 탄성 등의 스프링 성능을 유지하게 된다. 즉, 전기접속단자(300)는 스프링(310)의 탄성부(312)에 의한 스프링 성능에 탄성 고무층(350, 352)에 의한 기계적 성능을 갖게 된다.After the electroplating of nickel / gold, etc., the elastic rubber layers 350 and 352 are not plated, and thus the elastic part 312 having the elastic rubber layer maintains spring performance such as elasticity. That is, the electrical connection terminal 300 has a mechanical performance by the elastic rubber layers 350 and 352 to the spring performance by the elastic portion 312 of the spring 310.
바람직하게 탄성 고무층(350, 352)의 경도는 누르는 힘 및 복원율 등을 고려하여 Shore A 20 내지 75일 수 있다.Preferably, the hardness of the elastic rubber layers 350 and 352 may be Shore A 20 to 75 in consideration of pressing force and recovery rate.
이러한 구조에 의하면, 스프링(310)의 탄성부(312)에 접착되어 형성된 탄성 고무층(350, 352)에 의해 측면에서 가해지는 외부의 충격에 의해서도 스프링(310)을 구성하는 금속 와이어가 쉽게 늘어나거나 변형되지 않는다는 이점이 있다.According to this structure, the metal wire constituting the spring 310 is easily stretched by an external impact applied from the side by the elastic rubber layers 350 and 352 formed by being bonded to the elastic portion 312 of the spring 310. There is an advantage that it is not deformed.
또한, 탄성 고무층(350, 352)으로 전기접속단자(300)의 누르는 힘과 복원율 등을 조정할 수 있다.In addition, the pressing force and the recovery rate of the electrical connection terminal 300 may be adjusted using the elastic rubber layers 350 and 352.
탄성 고무층(350, 352)이 전기전도성을 갖는 경우, 스프링(310)에 의한 임피던스 값을 줄여주고 전기저항을 낮게 해주는 부가적인 효과도 있다.When the elastic rubber layers 350 and 352 have electrical conductivity, there is an additional effect of reducing the impedance value by the spring 310 and lowering the electrical resistance.
탄성 고무층(350, 352)은, 도 5(a)와 같이, 스프링(310)의 탄성부(312)를 감싸도록 형성되거나, 도 5(b)와 같이, 스프링(310)의 탄성부(312)의 내부에만 형성될 수 있다.The elastic rubber layers 350 and 352 are formed to surround the elastic portion 312 of the spring 310 as shown in FIG. 5A, or the elastic portion 312 of the spring 310 as shown in FIG. 5B. It can be formed only inside.
한편, 도 5(a)를 보면, 스프링(310)의 지지부(316)의 단부(316a)는 폴리머 수지가 경화하여 형성되는 접촉부(330)에 의해 그 높이가 다소 낮아지기는 하지만 여전히 돌출된 모습을 보여주고 있다.On the other hand, as shown in Figure 5 (a), the end portion 316a of the support portion 316 of the spring 310 is still protruded although the height is slightly lowered by the contact portion 330 formed by curing the polymer resin Is showing.
따라서, 지지부(316)의 단부(316a)에 인접한 일정 부분을 단부 구멍을 통하여 하방으로 구부려 단부(316a)의 돌출 높이를 미리 어느 정도 낮춘 상태에서 폴리머 수지가 경화하여 접촉부(330)를 형성하면 단부(316a)의 높이를 확연하게 낮출 수 있다.Therefore, when a portion of the support portion 316 adjacent to the end 316a is bent downward through the end hole, the polymer resin is cured to form the contact portion 330 in a state in which the protruding height of the end 316a is lowered to some extent in advance. The height of 316a can be reduced significantly.
또한, 접촉부(320, 330)의 단부면이 편평해져 진공 픽업이 용이하도록 그리고 넓은 접촉면적을 확보하기 위해서 접촉부(320, 330)를 형성하기 전후에 접촉부(320, 330)의 단부면을 연삭기를 사용하여 연삭하여 스프링(310)의 지지부(314, 316)의 일부를 제거할 수 있다.In addition, the end surfaces of the contact portions 320 and 330 are flattened so that the vacuum pick-up is easy and the contact surfaces 320 and 330 are formed before and after forming the contact portions 320 and 330 in order to secure a large contact area. Grinding may be used to remove some of the supports 314, 316 of the spring 310.
이 경우, 접촉부(320, 330)에서, 연삭된 스프링(310)의 지지부(314, 316)의 일부는 접촉부(320, 330)의 단부면으로부터 노출되어 대상물에 직접 접촉하여 전기적으로 연결됨으로써 전기 저항을 감소시킬 수 있는 부가적인 효과도 얻을 수 있다.In this case, in the contact portions 320 and 330, a part of the support portions 314 and 316 of the ground spring 310 are exposed from the end faces of the contact portions 320 and 330 to be in direct contact with the object and electrically connected thereto. Additional effects can be obtained that can reduce the
도 6은 본 발명의 다른 실시 예에 따른 전기접속단자를 나타내고, 도 7은 도 6의 전기접속단자를 수직으로 절단한 단면도이다.6 illustrates an electrical connection terminal according to another embodiment of the present invention, Figure 7 is a cross-sectional view of the electrical connection terminal of Figure 6 cut vertically.
전기접속단자(400)는 금속 재질의 코일 스프링(410), 스프링(410)의 일단에 접착되어 형성된 전기전도성을 갖는 접촉부(430), 및 타단에 전기전도성 접착제(422)를 개재하여 접착된 홀더 컵(holder cup, 420)으로 이루어진다.The electrical connection terminal 400 is a holder made of a metal coil spring 410, a contact portion 430 having electrical conductivity formed by being bonded to one end of the spring 410, and a holder bonded to the other end via an electrically conductive adhesive 422. A cup (holder cup) 420.
이러한 구조에 의하면, 홀더 컵(420)은 회로기판의 도전패턴에 솔더링 등에 의해 고정되고 스피커 단자나 안테나 단자가 도전성 접촉부(430)를 가압 접촉하여 탄성에 의해 회로기판의 도전패턴과 스피커 단자나 안테나 단자를 전기적으로 연결시킬 수 있다.According to this structure, the holder cup 420 is fixed to the conductive pattern of the circuit board by soldering or the like, and the speaker terminal or the antenna terminal is pressed against the conductive contact portion 430 so that the conductive pattern of the circuit board and the speaker terminal or the antenna are elastic. The terminals can be electrically connected.
홀더 컵(420)은 경도가 낮은 구리 또는 구리 합금 등의 금속 재질의 단일 몸체로 이루어질 수 있으며, 가령 0.05㎜ 내지 0.15㎜ 사이의 두께를 갖는 금속 시트를 드로잉 금형에 의한 프레스에 의해 제조한 프레스물일 수 있다. 이와 같이, 금속 시트를 프레스하여 형성함으로써 대량 생산이 용이하며 작업성이 좋고 제조가 용이하여 수율이 향상되며, 제조 원가가 작다는 이점을 갖는다.The holder cup 420 may be formed of a single body made of metal such as copper or a copper alloy having low hardness. For example, the holder cup 420 may be a press product manufactured by pressing a metal sheet having a thickness of between 0.05 mm and 0.15 mm by a drawing mold. Can be. As such, by pressing and forming the metal sheet, mass production is easy, workability is good, manufacturing is easy, and the yield is improved, and manufacturing costs are small.
도 6의 외관을 보면, 홀더 컵(420)은 상면이 개구되고 하면이 막힌 원통 형상의 몸체(421)를 구비하지만, 이에 한정되지 않는다. 여기서, 홀더 컵(420)의 하면의 모서리를 라운드 처리하여 솔더링 면적을 늘려 솔더링 강도를 증가시킬 수 있다.6, the holder cup 420 has a cylindrical body 421 whose upper surface is opened and the lower surface is blocked, but is not limited thereto. Here, the edge of the lower surface of the holder cup 420 may be rounded to increase the soldering area to increase the soldering strength.
도 7을 참조하면, 일 예로 홀더 컵(420)의 높이는 전체 높이의 대략 50% 이하로 형성된다. 작동거리를 크게 하기 위해 홀더 컵(420) 높이는 스프링(410) 높이의 1/2 이하로 형성될 수 있으나 이에 한정되지 않는다.Referring to FIG. 7, for example, the height of the holder cup 420 is formed to be about 50% or less of the overall height. In order to increase the working distance, the height of the holder cup 420 may be formed to be 1/2 or less of the height of the spring 410, but is not limited thereto.
또한, 홀더 컵(420)의 내경은 스프링(410)의 턴 직경과 비교하여 같거나 또는 약간 크게 형성될 수 있는데, 같은 경우에는 스프링(410)이 홀더 컵(420)의 내측벽에 접촉하여 상하 전기저항을 줄이면서 인덕턴스 값을 줄일 수 있고, 큰 경우에는 압착되는 스프링(410)을 홀더 컵(420) 내부로 수용하여 작동거리를 늘려주는 효과를 얻을 수 있다.In addition, the inner diameter of the holder cup 420 may be the same or slightly larger than the turn diameter of the spring 410, in which case the spring 410 is in contact with the inner wall of the holder cup 420 up and down The inductance value can be reduced while reducing the electrical resistance, and in the case of a large, the spring 410 being compressed can be accommodated into the holder cup 420 to increase the working distance.
상기한 것처럼, 스프링(410)의 하단의 지지부(414)는 전기전도성 접착제(422)를 개재하여 홀더 컵(420)의 바닥에 접착되어 고정된다. 전기전도성 접착제(422)가 홀더 컵(420)에 충진되는 양은 지지부(414)를 홀더 컵(420)의 바닥에 고정하는 정도이면 충분하다.As described above, the support 414 at the bottom of the spring 410 is adhered to and fixed to the bottom of the holder cup 420 via the electrically conductive adhesive 422. The amount by which the electrically conductive adhesive 422 is filled in the holder cup 420 is sufficient to fix the support 414 to the bottom of the holder cup 420.
전기전도성 접착제(422)는 내열성을 갖는 고무를 포함한 폴리머 수지에 금속 파우더가 혼합된 액상의 전기전도성 접착제가 경화에 의해 접착되며 형성된 것이거나 또는 솔더일 수 있다.The electroconductive adhesive 422 may be formed by soldering a liquid electroconductive adhesive in which a metal powder is mixed with a polymer resin including a rubber having heat resistance by curing.
전기전도성 접착제(422)에 의해 전기접속단자(400)의 상하 전기저항을 줄여 줄 수 있다.The upper and lower electrical resistance of the electrical connection terminal 400 can be reduced by the electrically conductive adhesive 422.
도시되지는 않았지만, 전기전도성 접착제(422)를 사용하지 않고 레이저 용접 등으로 스프링(410)과 홀더 컵(420)을 용접하여 접착할 수 있다.Although not shown, the spring 410 and the holder cup 420 may be welded and bonded by laser welding or the like without using the electrically conductive adhesive 422.
이러한 구조에 의하면, 스프링(410)의 하단이 홀더 컵(420) 내부로 들어가 바닥에 고정되기 때문에 스프링(410)에 가해지는 외부의 힘을 어느 정도 홀더 컵(420)이 막아 줄 수 있다.According to this structure, since the lower end of the spring 410 is fixed to the bottom into the holder cup 420, the holder cup 420 can prevent the external force applied to the spring 410 to some extent.
다시 말해, 홀더 컵(420)이 없는 경우, 외부로 노출되는 스프링(410)의 길이가 길기 때문에 그만큼 외부의 힘에 의해 변형될 가능성이 증가하지만, 홀더 컵(420)이 있는 경우, 외부로 노출되는 스프링(410)의 길이가 짧아져 외부의 힘에 의해 변형될 가능성이 감소한다.In other words, if there is no holder cup 420, the length of the spring 410 exposed to the outside is long, so the possibility of deformation by external force increases, but if there is a holder cup 420, exposed to the outside The length of the spring 410 to be shortened to reduce the possibility of deformation by the external force.
또한, 홀더 컵(420)의 중량에 의해 전기접속단자(400)의 무게 중심이 홀더 컵(420)에 위치하기 때문에 리플로우 솔더링시 송풍되는 핫 에어 등에 의한 흔들림을 최소화하여 안정적인 리플로우 솔더링을 할 수 있다.In addition, since the center of gravity of the electrical connection terminal 400 is located in the holder cup 420 by the weight of the holder cup 420, stable reflow soldering can be performed by minimizing the shaking caused by hot air blown during reflow soldering. Can be.
또한, 홀더 컵(420)을 솔더링 하는 경우, 홀더 컵(420)을 타고 솔더가 오르기 때문에 스프링(410)의 탄성에 전혀 영향을 주지 않는다.In addition, when soldering the holder cup 420, since the solder rises on the holder cup 420 does not affect the elasticity of the spring 410 at all.
한편, 제조된 전기접속단자(400)는 전체를 니켈/금 또는 팔라듐으로 도금할 수 있다. 예를 들어, 스프링(410)과 접촉부(430) 위에 경도가 높은 니켈을 1차 도금한 후 전기전도도와 내환경성이 좋고 솔더링이 잘되는 금을 2차 도금할 수 있다.Meanwhile, the manufactured electrical connection terminal 400 may be plated with nickel / gold or palladium. For example, after first plating nickel having high hardness on the spring 410 and the contact portion 430, gold having a good electrical conductivity and environmental resistance and having good soldering may be second plated.
특히, 기계적 강도가 높은 니켈 도금층의 두께를 조정하여 전기접속단자(400)의 탄성과 탄성 복원력을 조정하거나 전기접속단자(400)의 강도를 조절할 수 있고, 전기전도성이 좋은 금 도금층의 두께를 조정하여 전기접속단자(400)의 상하 전기저항을 조정할 수 있다.In particular, by adjusting the thickness of the nickel plating layer having a high mechanical strength, the elasticity and elastic restoring force of the electrical connection terminal 400 can be adjusted or the strength of the electrical connection terminal 400 can be adjusted, and the thickness of the gold plating layer having good electrical conductivity is adjusted. The upper and lower electrical resistance of the electrical connection terminal 400 can be adjusted.
또한, 접촉부(430), 스프링(410) 및 홀더 컵(420)으로 조립한 후에 솔더링이 가능한 금 등의 금속을 전체적으로 도금하여 상하 저항을 낮추면서 내 환경성을 좋게 할 수 있고 제조 원가를 줄일 수 있다.In addition, after assembling the contact portion 430, the spring 410 and the holder cup 420, a metal such as solderable gold can be plated as a whole, thereby improving the environmental resistance and reducing the manufacturing cost while reducing the upper and lower resistances. .
전기접속단자(400)는 캐리어에 릴 테이핑되고, 접촉부(430)의 단부면(431)에 진공 픽업이 가능한 평면이 구비되어 해당 단부면(431)에서 진공 픽업되어 표면실장되고 홀더 컵(420)에서 솔더 크림에 의한 리플로우 솔더링이 수행될 수 있다. Electrical connection terminal 400 is reel taped to the carrier, the end surface 431 of the contact portion 430 is provided with a plane capable of vacuum pick-up, vacuum pick-up from the corresponding end surface 431 surface mount and holder cup 420 Reflow soldering by solder cream may be performed at.
도 8(a) 내지 8(e)은 각각 본 발명의 다른 실시 예에 따른 전기접속단자를 나타낸다.8 (a) to 8 (e) show an electrical connection terminal according to another embodiment of the present invention, respectively.
이하의 설명에서 혼란을 피하기 위해 동일한 구성에 대해서는 동일한 부호를 부여한다.In the following description, the same components are designated by the same reference numerals to avoid confusion.
도 8(a)을 참조하면, 홀더 컵(420)의 개구 가장자리는 안쪽으로 절곡되어 플랜지(423)를 형성하며, 플랜지(423)는 스프링(410)과 겹쳐지는 정도의 폭으로 형성된다.Referring to FIG. 8 (a), the opening edge of the holder cup 420 is bent inward to form a flange 423, and the flange 423 is formed to a width that overlaps with the spring 410.
이러한 구조에 의하면, 플랜지(423)에 의해 스프링(410)의 일부는 홀더 컵(420) 내부에 수용된 상태로 외부로 이탈되는 것이 방지된다. According to this structure, a part of the spring 410 is prevented from being separated out by the flange 423 in a state accommodated in the holder cup 420.
그 결과, 상기의 일 실시 예의 전기전도성 접착제(422) 없이 실질적으로 플랜지(423)에 의해 스프링(410)이 홀더 컵(420)에 고정되는 효과를 가져온다.As a result, the spring 410 is secured to the holder cup 420 by the flange 423 substantially without the electrically conductive adhesive 422 of the above embodiment.
그러나, 이에 한정하지 않고 전기전도성 접착제(422)를 사용함으로써 스프링(410)을 홀더 컵(420)에 더욱 단단하게 결합할 수도 있다.However, the present invention is not limited thereto, and the spring 410 may be more tightly coupled to the holder cup 420 by using the electrically conductive adhesive 422.
홀더 컵(420) 내부에 수용되는 스프링(410)의 턴 수는 특별히 한정되지 않지만, 홀더 컵(420) 내부에서 스프링(410)이 플랜지(423)와 홀더 컵(420)의 바닥 사이에 단단하게 고정되도록 플랜지(423)가 스프링(410)에 의한 탄성 복원력을 받는 정도의 턴 수로 수용되면 충분하다.The number of turns of the spring 410 accommodated inside the holder cup 420 is not particularly limited, but in the holder cup 420, the spring 410 is firmly connected between the flange 423 and the bottom of the holder cup 420. It is sufficient that the flange 423 is accommodated in the number of turns to receive the elastic restoring force by the spring 410 to be fixed.
도 8(b)을 참조하면, 홀더 컵(420)의 하면을 가장자리로부터 중심을 향하여 위로 기울어지는 경사면(424)으로 형성하여 움푹 패이도록 한다.Referring to FIG. 8 (b), the bottom surface of the holder cup 420 is formed as an inclined surface 424 which is inclined upward from the edge toward the center to be recessed.
이러한 구조에 의하면, 홀더 컵(420)의 하면을 신뢰성 있게 수평면으로 확보하는 것이 대량생산에 따른 제조공정상 매우 어려운데, 홀더 컵(420)의 하면이 중심을 향하여 움푹 패이도록 함으로써 솔더링시 용융된 솔더가 끓어 올라 홀더 컵(420)을 움직이더라도 홀더 컵(420)의 하면의 움푹패인 부분이 용융 솔더의 움직임을 일부 흡수하여 홀더 컵(420) 기울어지는 것을 바로 잡아 들뜸이나 어느 한쪽으로의 치우침을 방지하며, 그 결과 솔더링의 신뢰성을 향상시킬 수 있다.According to this structure, it is very difficult in the manufacturing process according to mass production to secure the lower surface of the holder cup 420 to the horizontal plane reliably, so that the molten solder during soldering by causing the lower surface of the holder cup 420 to pit toward the center Even if it boils up and moves the holder cup 420, the recessed portion of the lower surface of the holder cup 420 absorbs the movement of the molten solder, thereby correcting the inclination of the holder cup 420 to prevent lifting or biasing to either side. As a result, the reliability of soldering can be improved.
또한, 움푹패인 부분에 의해 홀더 컵(420)의 하면의 표면적이 증대하며 그 결과 솔더링 강도가 향상될 수 있다.In addition, the surface area of the lower surface of the holder cup 420 is increased by the recessed portion, and as a result, the soldering strength may be improved.
도 8(c)을 참조하면, 홀더 컵(420)의 바닥 중심에는 구멍(425)이 형성되고, 구멍(425)의 가장자리를 따라 홀더 컵(420)의 내부로 리브(rib, 426)가 일정한 높이로 돌출된다.Referring to FIG. 8C, a hole 425 is formed at the bottom center of the holder cup 420, and ribs 426 are fixed to the inside of the holder cup 420 along the edge of the hole 425. Protrudes to a height.
이러한 구조에 의하면, 일정한 높이를 갖는 리브(426)가 스프링(410)의 하단으로부터 내부로 침투해 있기 때문에 스프링(410)이 탄성 변형되더라도 스프링(410)의 하단이 리브(426)로부터 이탈되어 뒤틀릴 가능성은 줄어든다.According to this structure, since the rib 426 having a constant height penetrates from the lower end of the spring 410 to the inside, even if the spring 410 is elastically deformed, the lower end of the spring 410 is separated from the rib 426 and then is There is less chance of being wrong.
리브(426)는, 가령 구멍(425)을 형성하는 공정에 의해 연속하여 형성될 수 있는데, 일 예로 구멍(425)을 형성하면서 홀더 컵(420)의 하부를 구성하는 살(두께) 부분이 얇아지면서 연신되어 구성될 수 있다.The rib 426 may be formed continuously by, for example, a process of forming the hole 425. For example, while the hole 425 is formed, the rib 426 forms a thin portion of the lower portion of the holder cup 420. It can be constructed by stretching.
리브(426)의 높이는 홀더 컵(420)의 높이보다 낮으며, 리브(426)의 외경은 스프링(410)의 턴 내경보다 작아야 한다.The height of the rib 426 is lower than the height of the holder cup 420, and the outer diameter of the rib 426 should be smaller than the turn inner diameter of the spring 410.
이 실시 예에서는 홀더 컵(420)의 하면이 중앙을 향해 파이는 형상을 구비하고 있으나, 이에 한정되지 않고 하면이 평면을 이룰 수 있다.In this embodiment, although the lower surface of the holder cup 420 has a shape in which the pie is toward the center, the lower surface of the holder cup 420 may form a flat surface.
도 8(d)을 참조하면, 홀더 컵(420)의 개구 가장자리는 바깥쪽으로 절곡되어 걸림턱(427)을 형성할 수 있다.Referring to FIG. 8 (d), the opening edge of the holder cup 420 may be bent outward to form the locking jaw 427.
이러한 구조에 의하면, 기구물, 가령 절연필름에 형성된 삽입 구멍에 위로부터 전기접속단자(400)를 끼워 고정하는 경우, 걸림턱(427)이 절연필름의 표면 위에 안착되도록 함으로써 전기접속단자(400)를 균일하게 장착할 수 있는 이점이 있다.According to this structure, when the electrical connection terminal 400 is inserted into and fixed to an insertion hole formed in an apparatus, for example, an insulating film, the locking jaw 427 is seated on the surface of the insulating film to secure the electrical connection terminal 400. There is an advantage that it can be mounted uniformly.
도 8(e)을 참조하면, 스프링(410)의 상단에는 전기전도성 접착제(442)를 개재하여 캡(cap, 440)이 접착된다.Referring to FIG. 8E, a cap 440 is attached to an upper end of the spring 410 through an electrically conductive adhesive 442.
다시 말해, 상기의 실시 예에서의 접촉부(430) 대신에 캡(440)을 스프링(410)의 상단에 덮어 접착하여 그 역할을 수행하도록 하고 있다.In other words, the cap 440 is covered with the top of the spring 410 instead of the contact portion 430 in the above embodiment to perform its role.
캡(440)은 홀더 컵(420)과 같은 재질로 구성되며, 홀더 컵(420)에 비해 아주 낮은 높이를 가지며, 가령 스프링(410)의 1 ~ 1.5턴 정도에 대응하는 높이를 구비할 수 있다. Cap 440 is made of the same material as the holder cup 420, has a very low height than the holder cup 420, for example, may have a height corresponding to about 1 to 1.5 turns of the spring 410. .
이러한 구조에 의하면, 캡(440)의 상면이 매끄러운 평면을 유지하여 대상물과 신뢰성 있는 접촉을 이룰 수 있으며, 진공 픽업이 용이해진다.According to this structure, the upper surface of the cap 440 can maintain a smooth plane and make reliable contact with the object, and the vacuum pickup becomes easy.
이상에서는 본 발명의 실시 예를 중심으로 설명하였지만, 당업자의 수준에서 다양한 변경을 가할 수 있음은 물론이다. 따라서, 본 발명의 권리범위는 상기한 실시 예에 한정되어 해석될 수 없으며, 이하에 기재되는 특허청구범위에 의해 해석되어야 한다.In the above description, the embodiment of the present invention has been described, but various changes can be made at the level of those skilled in the art. Therefore, the scope of the present invention should not be construed as being limited to the above embodiment, but should be interpreted by the claims described below.

Claims (28)

  1. 전기전도성 대상물 사이에 개재되어 상기 대상물을 서로 전기적으로 연결하는 전기접속단자로서,An electrical connection terminal interposed between electrically conductive objects to electrically connect the objects to each other,
    금속 재질의 스프링; 및Springs made of metal; And
    상기 스프링의 적어도 하나의 단부에 접착되어 형성되고, 상기 대상물에 전기적으로 접촉하는 전기전도성 접촉부를 포함하며,It is formed to be bonded to at least one end of the spring, and comprises an electrically conductive contact in electrical contact with the object,
    상기 접촉부는, 액상의 폴리머 수지에 금속 파우더가 혼합된 액상의 전기전도성 재료가 상기 스프링의 단부를 감싸 경화되거나 상기 스프링의 단부 구멍에 유입 경화되어 형성되는 것을 특징으로 하는 전기접속단자.The contact portion is an electrical connection terminal, characterized in that the liquid electroconductive material in which the metal powder is mixed with the liquid polymer resin is formed by wrapping around the end of the spring or inflow hardening into the end hole of the spring.
  2. 청구항 1에서,In claim 1,
    상기 스프링의 일단은 디핑에 의해 상기 전기전도성 재료로 감싸지거나, 함침에 의해 상기 스프링의 단부 구멍에 상기 전기전도성 재료가 유입되는 것을 특징으로 하는 전기접속단자.And one end of the spring is wrapped in the electrically conductive material by dipping, or the electroconductive material is introduced into the end hole of the spring by impregnation.
  3. 청구항 1에서,In claim 1,
    상기 폴리머 수지는 솔더링 조건을 만족하는 내열성을 구비하고, 에폭시 수지, 폴리이미드 수지 또는 탄성고무 중 어느 하나이며,The polymer resin has heat resistance that satisfies soldering conditions, and is any one of an epoxy resin, a polyimide resin, or an elastic rubber,
    상기 접촉부는, 상기 폴리머 수지의 경화에 의해 상기 스프링의 일단에 접착되는 것을 특징으로 하는 전기접속단자.And the contact portion is attached to one end of the spring by curing the polymer resin.
  4. 청구항 1에서,In claim 1,
    상기 스프링과 상기 접촉부의 외면에 솔더링 가능한 금속 도금층이 형성되는 것을 특징으로 하는 전기접속단자.An electrical connection terminal, characterized in that the solderable metal plating layer is formed on the outer surface of the spring and the contact portion.
  5. 청구항 4에서,In claim 4,
    상기 금속 도금층은 니켈/금 또는 니켈/팔라듐(Pd)이 순차적으로 도금되어 형성된 것을 특징으로 하는 전기접속단자.The metal plating layer is an electrical connection terminal, characterized in that formed by plating nickel / gold or nickel / palladium (Pd) sequentially.
  6. 청구항 1에서,In claim 1,
    상기 접촉부의 경도(강도)는 상기 스프링의 경도(강도)보다 낮은 것을 특징으로 하는 전기접속단자.The hardness (strength) of the contact portion is an electrical connection terminal, characterized in that lower than the hardness (strength) of the spring.
  7. 청구항 1에서,In claim 1,
    상기 접촉부의 단부면은 연삭에 의해 편평한 면으로 형성되고, 상기 연삭에 의해 상기 스프링의 일부가 상기 단부면으로부터 노출되는 것을 특징으로 하는 전기접속단자.And the end face of the contact portion is formed into a flat face by grinding, and a part of the spring is exposed from the end face by the grinding.
  8. 청구항 1에서,In claim 1,
    상기 스프링은, 중간 부분에 일정한 피치로 감긴 탄성부와, 상기 탄성부의 적어도 일단에 감겨 형성된 지지부로 구성되며,The spring is composed of an elastic portion wound at a constant pitch in the middle portion, and a support portion wound around at least one end of the elastic portion,
    상기 지지부는 상기 접촉부에 대응하고, 인접하는 턴이 서로 접촉하여 구성되는 것을 특징으로 하는 전기접속단자.And the support portion corresponds to the contact portion, and adjacent turns are configured to contact each other.
  9. 청구항 8에서,In claim 8,
    상기 지지부의 높이의 합은 상기 탄성부의 높이보다 낮은 것을 특징으로 하는 전기접속단자.The sum of the height of the support portion is an electrical connection terminal, characterized in that lower than the height of the elastic portion.
  10. 청구항 1에서,In claim 1,
    상기 접촉부의 형상은 중앙을 향해 반구 형상으로 파이거나 돌출되는 형상 중 어느 하나인 것을 특징으로 하는 전기접속단자.The shape of the contact portion is an electrical connection terminal, characterized in that any one of the shape of pi or protruding toward the center.
  11. 청구항 1에서,In claim 1,
    상기 스프링의 일단에 형성된 접촉부는 전기전도성 에폭시 수지 또는 폴리이미드 수지 중 어느 하나로 구성되고, 타단에 형성된 접촉부는 전기전도성 실리콘고무로 구성되며,The contact portion formed at one end of the spring is composed of any one of an electrically conductive epoxy resin or a polyimide resin, and the contact portion formed at the other end is composed of electrically conductive silicone rubber.
    상기 일단의 접촉부는 솔더링에 의해 상기 대상물에 고정되고, 상기 타단의 접촉부는 물리적인 압력에 의해 상기 대상물과 접촉하는 것을 특징으로 하는 전기접속단자.And the one end contact portion is fixed to the object by soldering, and the other end contact portion contacts the object by physical pressure.
  12. 청구항 1에서,In claim 1,
    상기 접촉부는 모두 전기전도성 에폭시수지나 폴리이미드 수지 중 어느 하나로 이루어진 것을 특징으로 하는 전기접속단자.The contact portion is an electrical connection terminal, characterized in that all made of any one of an electrically conductive epoxy resin or polyimide resin.
  13. 청구항 1에서,In claim 1,
    상기 접촉부가 형성되지 않은 상기 스프링의 단부는 솔더링에 의해 상기 대상물에 고정되는 것을 특징으로 하는 전기접속단자.And an end portion of the spring in which the contact portion is not formed is fixed to the object by soldering.
  14. 청구항 1에서,In claim 1,
    상기 접촉부는 상기 스프링의 일단에 형성되고, The contact portion is formed at one end of the spring,
    상기 스프링의 타단은 금속 재질의 홀더 컵에 수용되어 결합되는 것을 특징으로 하는 전기접속단자.The other end of the spring is an electrical connection terminal, characterized in that coupled to the holder cup is made of a metal material.
  15. 청구항 14에서,In claim 14,
    상기 스프링의 타단은 전기전도성 접착제를 개재하여 상기 홀더 컵의 바닥에 접착되는 것을 특징으로 하는 전기접속단자.And the other end of the spring is adhered to the bottom of the holder cup via an electrically conductive adhesive.
  16. 청구항 5에서,In claim 5,
    상기 전기전도성 접착제는 전기전도성 폴리머 수지와 솔더를 포함하는 것을 특징으로 하는 전기접속단자.The electrically conductive adhesive comprises an electrically conductive polymer resin and solder.
  17. 청구항 14에서,In claim 14,
    상기 홀더 컵의 개구 가장자리는 안쪽으로 절곡되어 플랜지를 형성하고, 상기 플랜지는 상기 스프링과 겹쳐지는 정도의 폭으로 형성되는 것을 특징으로 하는 전기접속단자.And an opening edge of the holder cup is bent inward to form a flange, and the flange is formed to a width that overlaps the spring.
  18. 청구항 17에서,In claim 17,
    상기 플랜지는 상기 홀더 컵의 내부에 수용된 스프링에 의해 탄성 복원력을 받는 것을 특징으로 하는 전기접속단자.And the flange receives elastic restoring force by a spring accommodated in the holder cup.
  19. 청구항 14에서,In claim 14,
    상기 홀더 컵의 하면은 가장자리에서 중앙을 향하여 파이는 형상의 경사면을 갖는 특징으로 하는 전기접속단자.And a lower surface of the holder cup has an inclined surface in which a pie is formed from an edge toward a center thereof.
  20. 청구항 14 또는 19에서,In claim 14 or 19,
    상기 홀더 컵의 하면 중심에는 구멍이 형성되고, 상기 구멍의 가장자리를 따라 상기 홀더 컵의 내부로 리브(rib)가 일정한 높이로 돌출되는 것을 특징으로 하는 전기접속단자.And a hole is formed in a center of a lower surface of the holder cup, and a rib protrudes at a predetermined height into an inside of the holder cup along an edge of the hole.
  21. 청구항 14에서,In claim 14,
    상기 홀더 컵의 개구 가장자리가 바깥쪽으로 절곡되어 걸림턱이 형성되는 것을 특징으로 하는 전기접속단자.And an opening edge of the holder cup is bent outward to form a locking step.
  22. 청구항 14에서,In claim 14,
    상기 스프링, 상기 접촉부의 외면 및 상기 홀더 컵에 솔더링 가능한 금속 도금층이 형성되는 것을 특징으로 하는 전기접속단자.And a metal plating layer solderable to the spring, the outer surface of the contact portion, and the holder cup.
  23. 청구항 14에서,In claim 14,
    상기 접촉부는 진공픽업되어 표면 실장되고, 상기 홀더 컵의 하면은 리플로우 솔더링에 의해 상기 대상물에 고정되는 것을 특징으로 하는 전기접속단자.And the contact portion is vacuum picked up and surface mounted, and a lower surface of the holder cup is fixed to the object by reflow soldering.
  24. 청구항 14에서,In claim 14,
    상기 홀더 컵의 높이는 상기 스프링 높이의 1/2 이하인 것을 특징으로 하는 전기접속단자.The height of the holder cup is an electrical connection terminal, characterized in that less than 1/2 of the height of the spring.
  25. 청구항 1에서,In claim 1,
    상기 전기접속단자는 캐리어에 릴 테이핑되는 것을 특징으로 하는 전기접속단자.And the electrical connection terminal is reel taped to a carrier.
  26. 청구항 1에서,In claim 1,
    상기 전기접속단자는 솔더링에 의해 고정되거나 테스트용 소켓에 끼워져 고정되는 것을 특징으로 하는 전기접속단자.The electrical connection terminal is fixed by soldering or inserted into the test socket, characterized in that the electrical connection terminal.
  27. 전기전도성 대상물 사이에 개재되어 상기 대상물을 서로 전기적으로 연결하는 전기접속단자로서,An electrical connection terminal interposed between electrically conductive objects to electrically connect the objects to each other,
    금속 재질의 탄성 코일 스프링;Elastic coil springs made of metal;
    상기 스프링의 일단에 전기전도성 접착제를 개재하여 접착되는 금속 재질의 캡; 및A metal cap adhered to one end of the spring via an electrically conductive adhesive; And
    상기 스프링의 타단에 전기적으로 결합되는 금속 재질의 홀더 컵을 포함하며,It comprises a holder cup of a metal material electrically coupled to the other end of the spring,
    상기 홀더 컵의 높이는 상기 스프링 높이의 1/2 이하이고, 상기 홀더 컵의 외면은 솔더링이 가능한 도금층이 형성된 것을 특징으로 하는 전기접속단자.The height of the holder cup is less than 1/2 of the height of the spring, the outer surface of the holder cup is an electrical connection terminal, characterized in that the plating layer is formed solderable.
  28. 전기전도성 대상물 사이에 개재되어 상기 대상물을 서로 전기적으로 연결하는 전기접속단자로서,An electrical connection terminal interposed between electrically conductive objects to electrically connect the objects to each other,
    금속 재질의 탄성 코일 스프링;Elastic coil springs made of metal;
    상기 스프링의 일단에 전기전도성 접착제를 개재하여 접착되는 금속 재질의 캡; 및A metal cap adhered to one end of the spring via an electrically conductive adhesive; And
    상기 스프링의 타단에 접착되어 형성되고, 상기 대상물에 솔더링에 의해 고정되는 전기전도성 접촉부를 포함하며,It is formed to be bonded to the other end of the spring, and includes an electrically conductive contact fixed to the object by soldering,
    상기 접촉부는, 액상의 폴리머 수지에 금속 파우더가 혼합된 액상의 전기전도성 재료가 상기 스프링의 단부를 감싸 경화되거나 상기 스프링의 단부 구멍에 유입 경화되어 형성되는 것을 특징으로 하는 전기접속단자.The contact portion is an electrical connection terminal, characterized in that the liquid electroconductive material in which the metal powder is mixed with the liquid polymer resin is formed by wrapping around the end of the spring or inflow hardening into the end hole of the spring.
PCT/KR2016/003980 2015-08-07 2016-04-18 Electrical connecting terminal WO2017026625A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP16834165.9A EP3333983A4 (en) 2015-08-07 2016-04-18 Electrical connecting terminal
JP2017508558A JP6335385B2 (en) 2015-08-07 2016-04-18 Electrical connection terminal
US15/441,570 US9966685B2 (en) 2015-08-07 2017-02-24 Electric connecting terminal for electrically connecting objects

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR20150111612 2015-08-07
KR10-2015-0111612 2015-08-07
KR10-2015-0124490 2015-09-02
KR1020150124490A KR101793717B1 (en) 2015-08-07 2015-09-02 Electric Connecting Terminal
KR10-2015-0131270 2015-09-16
KR1020150131270A KR20170017667A (en) 2015-08-07 2015-09-16 Electric Connecting Terminal

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/441,570 Continuation US9966685B2 (en) 2015-08-07 2017-02-24 Electric connecting terminal for electrically connecting objects

Publications (1)

Publication Number Publication Date
WO2017026625A1 true WO2017026625A1 (en) 2017-02-16

Family

ID=57983230

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2016/003980 WO2017026625A1 (en) 2015-08-07 2016-04-18 Electrical connecting terminal

Country Status (1)

Country Link
WO (1) WO2017026625A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019016432A (en) * 2017-07-03 2019-01-31 有限会社コイズミトレーディング Electric plug for duct rail

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5641315A (en) * 1995-11-16 1997-06-24 Everett Charles Technologies, Inc. Telescoping spring probe
KR200332757Y1 (en) * 2003-08-05 2003-11-07 조인셋 주식회사 Surface Mount typed Conductive Gasket
KR200396865Y1 (en) * 2005-07-13 2005-09-27 조인셋 주식회사 Connector being contacted by pressing
US7931475B2 (en) 2008-03-07 2011-04-26 Joinset Co., Ltd. Solderable elastic electric contact terminal
KR20110101986A (en) * 2010-03-10 2011-09-16 이은미 Test socket for semiconductor
KR101330999B1 (en) 2011-12-05 2013-11-20 (주)아이윈 Plungers interconnected pogo pin and manufacturing method of it
KR101437935B1 (en) 2013-11-14 2014-09-12 조인셋 주식회사 Surface-Mount Typed Electric Connecting Terminal

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5641315A (en) * 1995-11-16 1997-06-24 Everett Charles Technologies, Inc. Telescoping spring probe
KR200332757Y1 (en) * 2003-08-05 2003-11-07 조인셋 주식회사 Surface Mount typed Conductive Gasket
KR200396865Y1 (en) * 2005-07-13 2005-09-27 조인셋 주식회사 Connector being contacted by pressing
US7931475B2 (en) 2008-03-07 2011-04-26 Joinset Co., Ltd. Solderable elastic electric contact terminal
KR20110101986A (en) * 2010-03-10 2011-09-16 이은미 Test socket for semiconductor
KR101330999B1 (en) 2011-12-05 2013-11-20 (주)아이윈 Plungers interconnected pogo pin and manufacturing method of it
KR101437935B1 (en) 2013-11-14 2014-09-12 조인셋 주식회사 Surface-Mount Typed Electric Connecting Terminal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3333983A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019016432A (en) * 2017-07-03 2019-01-31 有限会社コイズミトレーディング Electric plug for duct rail

Similar Documents

Publication Publication Date Title
JP6335385B2 (en) Electrical connection terminal
WO2018221777A1 (en) Contact for testing semiconductor device, and test socket device
WO2013151316A1 (en) Test socket having high-density conductive unit, and method for manufacturing same
KR101667929B1 (en) Silicon rubber socket
WO2013162343A1 (en) Test socket which allows for ease of alignment
KR101437935B1 (en) Surface-Mount Typed Electric Connecting Terminal
WO2020032318A1 (en) Contact and socket device for testing semiconductor device
WO2010134734A2 (en) Conductive contact terminal to be mounted on a substrate surface
WO2019198853A1 (en) Contacts and test socket apparatus for testing semiconductor device
WO2018208117A1 (en) Inspection socket
WO2017026625A1 (en) Electrical connecting terminal
WO2016153116A1 (en) Elastic electric contact terminal with improved environmental resistance, and fabrication method therefor
WO2019245153A1 (en) Plate spring-type connecting pin
KR101311752B1 (en) Contactor for testing semiconductor and manufacturing method thereof
WO2016171324A1 (en) Surface-mounted electrical connection terminal
US7261570B1 (en) Method for attaching cable to circuit substrate
KR20100069133A (en) Spring contactor of test socket for semiconductor device
WO2013141611A1 (en) Semiconductor memory card, printed circuit board for memory card and method of fabricating the same
WO2019039628A1 (en) Bidirectional conductive module having laser processing technology applied thereto and method for manufacturing same
WO2020204623A1 (en) Flexible cable jumper device and method for manufacturing same
KR100776189B1 (en) Mounting method for mounting microphone on flexible printed circuit board
US6004145A (en) Cable-to-board arrangements for enhanced RF shielding
KR101804882B1 (en) Solderable Elastic Electric Contact Terminal
WO2023019642A1 (en) Conductive assembly, manufacturing method for same, and testing apparatus
KR102339845B1 (en) Electric Contact Terminal

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2017508558

Country of ref document: JP

Kind code of ref document: A

REEP Request for entry into the european phase

Ref document number: 2016834165

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2016834165

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16834165

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE