KR100892720B1 - Solderable elastic electric contact terminal - Google Patents

Abstract

An elastic electric contact terminal which can be soldered is provided to reduce the manufacturing cost and increase the production efficiency by providing the self-elasticity of a resilient rubber. An elastic electric contact terminal(100) is formed as an insulation non-foamed resilient rubber(10), a thin insulation non-foamed rubber coating layer(20) which has the self-elasticity, and a heat-proof polymer film(30) which has a thin metal layer(40) one surface thereof are sequentially stacked. As the polymer film and rubber coating layer surround the resilient rubber, the elastic electric contact terminal can provide the elasticity and restitutive force by oneself. Because the insulation non-foamed resilient rubber is pressed out in a sheep shape and then is cut by the slitting process, the manufacturing cost is lower, and the yield and the strength of the soldering are improved.

Description

Solderable Elastic Electric Contact Terminal

The present invention relates to an electrical contact terminal, and more particularly, to an elastic electrical contact terminal capable of soldering while connecting an object and a printed circuit board to have elasticity and electrically and mechanically. In particular, the present invention relates to a small elastic electrical contact terminal having a low height capable of reflow soldering by surface mounting.

In general, an elastic electrical contact terminal capable of soldering should have good electrical conductivity, excellent elastic recovery, and be able to withstand soldering temperatures.

Conventionally, a metal material is mainly used as an electrical contact terminal capable of reflow soldering. For example, a beryllium copper sheet having a thickness of 0.3 mm or less and a predetermined width was punched into a predetermined shape through a press die, and then an electrical contact terminal was manufactured to improve elastic recovery through heat treatment.

In this way, the electrical contact terminal made of only a metal sheet has to be bent in a certain shape in order to have elasticity. Since most of the height of the electrical contact terminal is determined by the bending height, it is impossible to provide elasticity below a certain height. In addition, since the metal sheet is light in weight and can be moved by wind supplied during surface mounting, it is easy to have poor soldering.

Another conventional technique is EP 1090538 of Gore, USA. According to this patent, there is a disadvantage in that a means for fixing the electrically conductive gasket material and the solderable support layer, that is, a separate adhesive is required. Furthermore, there are disadvantages in that the price is expensive and the electrical resistance is increased by the electrically conductive adhesive means.

Another conventional technique is U.S. Patent 7,129,421 to Gore. According to this patent, there is a disadvantage in that productivity is reduced when producing an EMI gasket assembly by forming an electrically conductive support layer having a crimp in the compression hole of the electrically conductive gasket material and the electrically conductive gasket material in which the compression hole is formed. . Moreover, there is a disadvantage that it is difficult to manufacture the EMI gasket assembly having a low height by the compression hole and the electrically conductive support layer.

Still other conventional techniques include Patent Nos. 0783588, 839893, and Utility Model No. 390490, filed and registered by the present inventors in Korea. According to this conventional technique, the elasticity of the electrical contact terminal is provided by the foam of the elastic rubber or the hole of the elastic rubber, so it is useful for the electrical contact terminal of a predetermined size or more. In the case of using the foamed elastic rubber or a tube-shaped elastic rubber with holes as described above, it is difficult to manufacture a small elastic electrical contact terminal having a height of 2.2 mm or less and a small width and a high cost. Moreover, there is a disadvantage in that the yield is poor due to the large movement during automatic reflow soldering by vacuum pickup.

An object of the present invention is to provide an elastic electrical contact terminal capable of low soldering cost, excellent production efficiency and low height soldering by providing elasticity by the elasticity of the elastic rubber itself.

Another object of the present invention is to provide a solderable elastic electrical contact terminal which is less affected by elasticity and restoring force by a heat resistant polymer film having a metal layer formed thereon.

Another object of the present invention is to provide an elastic electrical contact terminal capable of soldering surface mount and reflow soldering by vacuum pickup.

Another object of the present invention is to provide a solderable elastic electrical contact terminal that does not interfere with soldering by receiving leaks from the non-insulated rubber coating layer.

It is another object of the present invention to provide an elastic electrical contact terminal capable of soldering, which makes it easy to distinguish the upper and lower surfaces without a separate identification mark.

Another object of the present invention is to provide a solderable elastic electrical contact terminal having improved soldering strength by improving lead rise phenomenon on both sides of the electrical contact terminal.

Another object of the present invention is to provide an elastic electrical contact terminal capable of increasing the weight of the electrical contact terminal and increasing the soldering area, so that soldering with little movement during reflow soldering is possible.

The above object is, insulating non-foamed elastic rubber; An insulating non-foaming rubber coating layer bonded and wrapped around the insulating non-foaming elastic rubber except for both cross sections; And a heat-resistant polymer film adhered to the insulated non-foamed rubber coating layer so that one side surrounds the insulated non-foamed rubber coating layer, and a metal layer is integrally formed on the other side of the insulated non-foamed rubber coating. An area is greater than the area of both sides surrounded by the polymer film, and is achieved by a solderable elastic electrical contact terminal, the elasticity of which is provided by the self-elasticity of the insulating non-foamable rubber.

According to the above configuration, the production cost is low by applying the insulating non-foamed elastic rubber, and both ends of the back surface have a right angle structure by cutting, so that the yield of soldering is improved and the strength of soldering is improved.

In addition, since the elastic electrical contact terminal has a low height, a wide cross section, and a sheet shape having a length approximately equal to the height, the elastic electrical contact terminal is surrounded by an expensive polymer film only in the portion except for both cross sections exposed to the outside, thereby reducing the material cost. There is an advantage.

In addition, the elastic rubber can be easily pushed out to both end surfaces having a large area where the heat-resistant polymer film is not wrapped, and the electrical contact terminals are pressed with elasticity, and when the external force is removed, the elastic rubber is easily returned to its original position. Goes. Thus, it provides reliable elasticity and restoring force.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1. First embodiment

1 shows a solderable elastic electrical contact terminal 100 according to a first embodiment of the present invention.

Referring to FIG. 1, the elastic electrical contact terminal 100 includes an insulating non-foamed elastic rubber (core) 10, an insulating non-foamed rubber coating layer 20, and a heat resistant polymer film 30 having a metal layer 40 formed on one side thereof. It is laminated sequentially.

Here, since the insulating non-foamed elastic rubber 10 is used as the core, the elastic force, the restoring force and the hardness can be easily adjusted by adjusting the hardness and physical properties of the elastic rubber 10. In other words, since the heat-resistant polymer film 30 having the metal layer 40 having a thin thickness and the insulating non-foaming rubber coating layer 20 having the thin thickness and the self-elasticity surround the elastic rubber 10, the electrical contact terminal 100 ) Can provide elasticity and restoring force on its own by the elasticity and restoring force of the elastic rubber 10, and is effective for a small size elastic electrical contact terminal having a low height and short length of, for example, 2.5 mm or less.

In addition, since the insulating non-foamed elastic rubber 10 is extruded into a sheet shape and then cut by slitting, the production cost is low, and both ends of the back surface have a right angle structure due to cutting, so that the yield of soldering is improved. Good soldering strength is improved.

Referring to FIG. 1, the elastic electrical contact terminal 100 has a sheet shape having a low height, a wide cross section, and a length approximately the same as the height. In other words, although the cross-sectional area of both ends exposed to the outside is larger than the conventional one, the length is shortened, resulting in the same volume.

According to such a structure, since the expensive polymer film 30 is wrapped only in portions except both end surfaces exposed to the outside, the material cost is low.

In addition, when the force is applied to the electrical contact terminal 100 from the top, the elastic rubber 10 is deformed, at which time the elastic rubber 10 is easily protruded into both end surfaces having a large area that is not wrapped in the heat-resistant polymer film (30). It is possible that the electrical contact terminal 100 is pressed with elasticity, and when the external force is removed, the protruding elastic rubber 10 easily returns to its original position. Therefore, it provides reliable elasticity and restoring force, and the compression displacement in the height direction is also within the range of use.

For example, the height of the electrical contact terminal 100 of the present invention may be formed to 1.5mm, the width is 4mm, and the length is 1.5mm. However, the present invention is not limited thereto, and the height is 0.4 to 2.5 mm, and the width is preferably larger than the length.

In addition, by applying the insulating non-foamed rubber coating layer 20 having a thin thickness, the adhesive strength and elasticity is maintained before and after soldering, it is possible to maintain the adhesive strength and elasticity even in repeated compression test. In addition, by applying the heat-resistant polymer film 30 formed with a metal layer 40 having a thin thickness, the heat-resistant polymer film 30 has good flexibility and maintains elasticity even in the compression test, and imparts electrical conductivity by the metal layer 40. And soldering is possible.

Referring to FIG. 1, both ends of the polymer film 30 having the metal layer 40 formed on the rear surface of the electrical contact terminal 100 are spaced apart to form a spaced groove 50, and the spaced groove 50 is along the length direction. It is formed continuously.

According to this structure, the spaced groove 50 can accommodate the leakage of the non-foamed rubber coating layer 20 which is not soldered to improve the yield of soldering, and the electrical contact terminal by the spaced groove 50 itself. It is easy to distinguish the front and back surfaces of 100, so that automatic packaging by vacuum pickup is easy. In particular, the spaced groove 50 can save the expensive polymer film 30 by that much it can save the material cost. In addition, by forming the separation groove 50 in the center of the electrical contact terminal 100, the soldering strength of both the left and right sides of the electrical contact terminal 100 can be similar, the lead rises at the left and right ends of the electrical contact terminal 100. Improve the phenomenon.

Hereinafter, each part is demonstrated in detail.

1.1 Insulation Non-foaming Elastic Rubber (10)

As described above, the insulating non-foamed elastic rubber 10 positioned in the innermost part has a sheet shape having a low height and a wide rectangular cross section and a length approximately the same as the height. However, the cross section of the elastic rubber 10 is not limited to a rectangular shape, and is extruded into a sheet shape so as to form various shapes and slitting in the longitudinal direction.

The extruded sheet-shaped elastic rubber backing is horizontal, and the backside and both sides are perpendicular to each other by cutting by slitting. According to this structure, the electrical contact terminal 100 is easy to automate and the soldering area is large, the soldering strength is good and the reflow soldering yield is good.

The material of the elastic rubber 10 is preferably a non-foaming heat-resistant elastic rubber, for example silicone rubber, in order to satisfy conditions such as reflow soldering, elasticity and restoring force. Furthermore, since the electrical contact terminal 100 has elasticity by elasticity and restoring force of the elastic rubber 10 itself, the material of the elastic rubber 10 is preferably low in hardness and fast in speed of recovery.

In addition, the hardness of the elastic rubber 10 is Shore A 35 to 80 for proper mechanical strength and elasticity.

In addition, both sides of the upper surface of the elastic rubber 10 may be formed in a round shape. According to such a structure, not only the handling is easy but also the completed electrical contact terminal 100 can be prevented from being caught on both sides in the process of being assembled with the opposite object after being soldered to the printed circuit board or the like.

In addition, the color of the elastic rubber 10 is preferably different from the color of the metal layer 40 so that the separation groove 50 is surely distinguished.

1.2 Insulation non-foaming rubber coating layer (20)

The insulating non-foaming rubber coating layer 20 is positioned between the surface of the elastic rubber 10 and the heat resistant polymer film 30 to reliably adhere the elastic rubber 10 and the heat resistant polymer film 30. In particular, the insulating non-foamed rubber coating layer 20 should maintain the adhesive strength at all times before and after soldering. Preferably the hardness of the fully cured insulating non-foamed rubber coating layer 20 for flexibility and elasticity is Shore A 20 to 60 and the thickness is about 0.02 to 0.2mm.

The insulating non-foaming rubber coating layer 20 may be formed by curing the liquid silicone rubber, and the type is selected from a silicone rubber that is cured by heat or a silicone rubber that is cured by moisture. Preferably, in order to increase the working speed, a type that is completely cured by heat may be used.

The liquid silicone rubber has an adhesive with an object to be opposed while being cured and is formed of a solid insulating non-foamed rubber coating layer 20 after curing, and once cured, maintains elasticity and maintains adhesive strength without being melted even when heated again. do. Preferably, in order to obtain reliable adhesive strength, an adhesion enhancing agent is added to the liquid silicone rubber, or a surface treatment such as corona treatment is applied to the surface of the object to be bonded, that is, the elastic rubber 10 or the heat-resistant polymer film 30.

1.3 Heat Resistant Polymer Film (30)

The heat resistant polymer film 30 may be, for example, a polyimide (PI) film or other heat resistant polymer film having good heat resistance, and the thickness thereof may be, for example, 0.01 to 0.05 mm in consideration of flexibility and mechanical strength. It is preferable to form between.

In addition, the metal layer 40 is integrally formed on the rear surface of the heat resistant polymer film 30. At this time, by removing a predetermined portion of the metal layer 40 by the etching operation, the flexibility of the heat-resistant polymer film 30 can be improved.

Preferably, the metal layer 40 may be formed of a plurality of metal layers, and preferably, the metal layer 40 is formed by sputtering a metal on the heat resistant polymer film 30 and then plating the metal thereon. Preferably at least one layer of metal layer 40 is formed by copper plating and the main component of the entire metal layer 40 is copper. The outermost surface of the metal layer 40 is plated with any one of tin, silver or gold to prevent corrosion and soldering by solder cream. The thickness of the metal layer 40 may be formed, for example, between 0.002 and 0.01 mm in consideration of flexibility, solderability, soldering strength, and the like.

The heat resistant polymer film 30 on which the metal layer 40 is formed may be, for example, a cross-section flexible laminated metal plate FCCL.

Preferably, the electrical resistance of the metal layer 40 is 0.5 Ω or less.

1.4 Manufacturing Method of Electrical Contact Terminal 100

Hereinafter, a method of manufacturing the electrical contact terminal 100 will be described.

The liquid silicone rubber is cast with a thickness of 0.02 mm to 0.2 mm in a casting machine by casting a liquid silicone rubber that is cured by heat on the insulated surface of the heat-resistant polymer film 30 having a predetermined width having a metal layer 40 formed on the rear surface thereof. While forming the coating layer, it is placed in the form of a roll (roll) by the extrusion process on the coating layer is placed on the elastic rubber 10 and wrapped through a jig of a certain shape.

For example, an elastic rubber 10 having a width of 4 mm and a thickness of 1.5 mm in a rectangular shape is continuously wrapped by the heat resistant polymer film 30. At this time, since the width of the elastic rubber 10 is relatively wide, about 4 mm, it is easy to form the spaced grooves 50 with the heat-resistant polymer film 30 on the lower surface of the elastic rubber 10, and these spaced grooves 50 are leaked ratios. The foam rubber coating layer 20 is received.

Here, if the thickness of the coating layer of the liquid silicone rubber is too thin, the adhesion between the elastic rubber 10 and the heat-resistant polymer film 30 worsens, and if the thickness of the coating layer is too thick, the liquid silicone rubber takes a long time to cure. Too much leakage between the heat-resistant polymer film 30, there is a disadvantage that the separation grooves 50 do not accommodate all to interfere with the soldering. In other words, the non-foamed coating layer 20 protruding to the rear surface even after filling all the spaced grooves 50 is not soldered, thereby causing a defect such as lifting during reflow soldering.

Thereafter, the heat resistant polymer film 30 wrapping the elastic rubber 10 is continuously interposed between the elastic rubber 10 and the heat resistant polymer film 30 while continuously passing through a mold having dimensions similar to those of the elastic rubber 10. When the liquid silicone rubber coating layer is cured with heat, the liquid silicone rubber layer is cured while being changed into an insulating non-foaming rubber coating layer 20. At this time, the insulating non-foaming rubber coating layer 20 serves to bond the elastic rubber 10 and the heat-resistant polymer film 30. That is, the liquid silicone coating layer serves as an adhesive to bond the elastic rubber 10 and the heat-resistant polymer film 30 after thermal curing in a mold of a high temperature and outside of a predetermined dimension as a non-foaming rubber coating layer 20 having elasticity. do. When the liquid non-foamed rubber coating layer 20 leaks from the polymer film 30 while passing through the mold, the leak is received in the spaced groove 50.

Since the liquid silicone rubber does not melt again by heat once cured, the original adhesive performance is maintained even when the electrical contact terminal 100 is soldered. At this time, in order to accelerate the curing rate of the liquid silicone rubber located inside the mold, the temperature of the mold is maintained at about 180 ℃ and the ambient humidity is maintained at about 60%.

Thereafter, the second curing is performed for about 30 minutes in an oven at about 180 ° C. to completely cure the non-foamed rubber coating layer 20.

Since the electrical contact terminal 100 is manufactured by using the heat-resistant polymer film 30 having the metal layer 40 formed on the back surface, a long product has a problem such as wrinkles. After cutting to a length, for example, 1.2 mm, the reel is packaged with a vibration pick-up and reflow soldered by surface mounting.

The electrical contact terminal 100 thus manufactured has a height of about 1.5 mm, a width of 4 mm, and a length of 1.2 mm.

2. Second embodiment

2 shows an electrical contact terminal 110 according to a second embodiment of the present invention.

Referring to FIG. 2, the bottom surface of the elastic rubber 10 may be formed to be inclined in a ∧ shape that is recessed toward the middle portion at both ends in the width direction. The inclined angle may vary depending on the physical properties of the elastic rubber 10 (for example, the coefficient of thermal expansion) and the dimension. For example, the inclined angle may be formed within an angle range of 1 to 10 degrees.

According to this structure, since the lower surface of the elastic rubber 10 has a hollow shape toward both ends at the both ends, the leaked non-foamed rubber coating layer 20 can be accommodated more to improve soldering strength and yield. In addition, by the structure toward the center can be obtained the effect of further lowering the hardness of the elastic rubber 10 can provide a more reliable restoring force and elasticity.

3. Third embodiment

3 shows an electrical contact terminal 120 according to a third embodiment of the present invention.

Referring to FIG. 3, a recessed recess 12 is formed on the rear surface of the elastic rubber 10, and the non-foamed rubber coating layer 20 and the polymer film 30 corresponding to the recess 12 are formed. The portions form stepped portions 22 and 32 respectively.

According to this structure, since the non-foamed rubber coating layer 20 and the polymer film 30 form step portions 22 and 32, respectively, by the recesses 12 formed on the rear surface of the elastic rubber 10, as a result, It will form a large receiving portion 60. Therefore, even if it does not accommodate all of the non-foamed rubber coating layer 20 leaked by the separation groove 50 can be accommodated so that the leaked non-foamed rubber coating layer 20 does not protrude more than the polymer film 30. In addition, the recess 12 can obtain the effect of further lowering the hardness of the elastic rubber 10 can provide a more reliable restoring force and elasticity.

4. Fourth embodiment

4 shows an electrical contact terminal 130 according to a fourth embodiment of the present invention.

4, the area of the surface of the elastic rubber 10 is formed to be smaller than the area of the back surface.

According to this structure, since the surface area of the elastic rubber 10 is small, it is easy to compress the electrical contact terminal 100 with a small external force, and also provides a more reliable resilience when removing the external force. . Therefore, this structure is suitable for high compression with a small force.

5. Fifth Embodiment

5 shows an electrical contact terminal 140 according to a fifth embodiment of the present invention.

Referring to FIG. 5, after the reinforcing table 70 is positioned on the rear surface of the elastic rubber 10, the metal layer is disposed on the rear surface of the elastic rubber 10 and the reinforcing table 60 at the same time through the insulating non-foaming rubber coating layer 20. 40 is wrapped with the formed heat resistant polymer film 30. At this time, the both ends of the heat-resistant polymer film 30 is spaced apart from each other to form a spaced groove 50 is the same as the above embodiment.

Preferably, the reinforcing rod 60 is a metal foil or heat resistant polymer film having a thickness of 0.01 to 0.2 mm and the color is different from that of the metal layer 40.

According to this embodiment, in the case of the light electrical contact terminal 150, there is an advantage that does not move easily even by the wind supplied when the surface mounting by the vacuum pickup by the weight of the reinforcing table 60. Furthermore, since the reinforcing table 60 has a higher hardness than the elastic rubber 10, the reinforcing table 60 reinforces mechanical strength when the elastic rubber 10 having low hardness is wrapped with the heat-resistant polymer film 30 and bonded. Given that the back surface of the electrical contact terminal 100 is not rounded (round) to maintain a right angle to improve the soldering strength and yield. Furthermore, the reinforcing table 60 does not increase, the hardness is high to improve the workability.

6. Sixth embodiment

6 shows an electrical contact terminal 160 according to a sixth embodiment of the present invention.

Referring to FIG. 6, the heat-resistant adhesive 80 may be attached to the spaced groove 50 formed on the rear surface of the electrical contact terminal 160, and the thickness thereof is the same as that of the polymer film 40 on which the metal layer 30 is formed. Thin or thin Preferably, the heat resistant adhesive 80 is a hot melt adhesive or a heat resistant double-sided adhesive tape.

According to this structure, when the electrical contact terminal 100 is mounted on the solder cream of the ground pattern by vacuum pickup, the heat-resistant adhesive 80 is melted and adhered by heat prior to the reflow soldering, so that the electrical contact during reflow soldering The terminal 100 is not twisted or moved to prevent a poor soldering.

Although the above has been described with reference to the embodiments of the present invention, various changes or modifications can be made at the level of those skilled in the art.

That is, in FIG. 1, the groove 50 is formed on the rear surface of the elastic rubber 10 by the heat resistant polymer film 30 having the metal layer 30 formed thereon, but both ends of the heat resistant polymer film 30 overlap or coincide with each other. The spacing groove 50 may not be formed. In addition, by forming a wire smaller than the thickness of the elastic rubber 10 on the left and right both ends of the rear surface of the elastic rubber 10 within a range that does not affect the elasticity of the elastic rubber 10 and the mechanical strength of the electrical contact terminal 100 and Improve workability and prevent soldering defects. In addition, the V-shaped receiving groove may be directly formed on the rear surface of the elastic rubber 10 to accommodate more of the leaked non-foamed rubber coating layer 20.

Such changes and modifications may belong to the present invention without departing from the scope of the present invention. It is intended that the scope of the invention be determined by the claims set forth below.

1 shows an electrical contact terminal according to a first embodiment of the present invention.

2 shows an electrical contact terminal according to a second embodiment of the present invention.

3 shows an electrical contact terminal according to a third embodiment of the present invention.

4 shows an electrical contact terminal according to a fourth embodiment of the present invention.

5 shows an electrical contact terminal according to a fifth embodiment of the present invention.

6 shows an electrical contact terminal according to a sixth embodiment of the present invention.

Claims (15)

Solderable elastic electrical contact terminals, Insulated non-foamable rubber; An insulated non-foamed rubber coating layer bonded to surround and insulate the insulated non-foamed elastic rubber such that both end surfaces of the insulated non-foamed elastic rubber are exposed; And One side is wrapped around the insulating non-foaming rubber coating layer and bonded to the insulating non-foaming rubber coating layer, the other side comprises a heat-resistant polymer film integrally formed with a metal layer, An area of both exposed cross sections of the insulating non-foamed elastic rubber is larger than an area of both cross sections in the width direction surrounded by the heat resistant polymer film, And the elasticity of the solderable elastic electrical contact terminal is provided by the elasticity of the non-insulated elastic rubber. The method according to claim 1, The back surface of the insulating non-foamed elastic rubber at which both ends of the heat resistant polymer film are positioned is inclined in an inclined shape toward the middle portion from both ends of the insulating non-foamed elastic rubber. The method according to claim 1, A solderable elastic electrical contact terminal having a recessed recess formed on a rear surface of the insulating non-foamable elastic rubber having both ends of the heat resistant polymer film. The method according to claim 1, Solderable elastic electrical contact terminal having an area of the back surface of the insulating non-foamed elastic rubber in which both ends of the heat-resistant polymer film is located larger than the area of the opposite surface. The method according to claim 1, Solderable elastic electrical contact terminal is wrapped by the heat-resistant polymer film via the insulating non-foamed rubber coating layer in a state that the reinforcing rod is in contact with the back surface of the non-insulation elastic rubber in which both ends of the heat-resistant polymer film is located. The method according to any one of claims 1 to 5, Solderable elastic electrical contact terminals in which both ends of the heat resistant polymer film are spaced apart from each other on the back surface of the insulating non-foamed elastic rubber at which both ends of the heat resistant polymer film are formed. The method according to claim 1, Solderable elastic electrical contact terminal, wherein a heat-resistant adhesive is further formed on a portion of the rear surface of the heat-resistant polymer film at which both ends of the heat-resistant polymer film are located. The method according to claim 1, On both sides of the insulating non-foamed elastic rubber where both ends of the heat resistant polymer film are positioned, both ends of the heat resistant polymer film are spaced apart to form a spaced groove. Solderable elastic electrical contact terminal that the heat-resistant adhesive is further formed in the separation groove. The method according to claim 1, The insulating non-expandable elastic rubber material is silicone rubber, the hardness is Shore A 35 to 80 solderable elastic electrical contact terminal. The method according to claim 1, The insulating non-foaming rubber coating layer is a solderable elastic electrical contact terminal formed by curing a liquid elastic rubber paste is interposed between the insulating non-foaming elastic rubber and the heat-resistant polymer film. The method according to claim 1, The heat-resistant polymer film formed integrally with the metal layer is a cross-section flexible laminated metal plate (FCCL), the surface of the metal layer is a solderable elastic electrical contact terminal plated with any one of tin, silver or gold. The method according to claim 1, Solderable elastic electrical contact terminal formed with a receiving groove for accommodating the insulating non-foamed rubber coating layer on the back surface of the insulating non-foamed elastic rubber in which both ends of the heat resistant polymer film are located. The method according to claim 1, And a portion of the metal layer is solderable elastic electrical contact terminals removed by etching. The method according to claim 1, The solderable elastic electrical contact terminal is a surface mount by vacuum pickup and thus reflow solderable solderable elastic electrical contact terminal. The method according to claim 1, The solderable elastic electrical contact terminal has a height of 2.5 mm or less solderable elastic electrical contact terminal.

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