KR102013898B1 - Electric contact terminal and mount structure on metal case for the same - Google Patents

Abstract

Disclosed is an electric contact terminal inserted into a storage groove formed on the surface of an electro-conducting object and bonded to the object by ultrasonic welding. The contact terminal comprises: a body consisting of aluminum, an aluminum alloy, magnesium or a magnesium alloy; at least a pair of bumps protruding from the side of the body and changed by the external pressure; and a plating layer formed on the surface of the body coming in contact with other objects.

Description

Electric contact terminal and mount structure on metal case for the same}

The present invention relates to an electrical contact terminal, in particular to an electrical contact terminal that can improve the electrical contact reliability of the electrical contact portion provided in the metal case of the electronic device in electrical contact with the elastic electrical contact terminal mounted on the opposing circuit board. Related.

Non-ferrous metals such as aluminum, aluminum alloys or magnesium or magnesium alloys are mainly used in metal cases of electronic communication devices including mobile phones, which are light in weight, inexpensive, and easy to process.

These metal cases made of non-ferrous metals are vulnerable to corrosion and low strength in the air or due to environmental changes, and thus can be surface treated such as coating or plating to prevent corrosion.

However, if the surface treatment on the aluminum or aluminum alloy or magnesium or magnesium alloy to prevent corrosion has the disadvantage that the electrical resistance is increased by the surface treatment. In this case, the electrical contact portion of the case where the elastic terminal mounted on the circuit board contacts should be peeled off by the post-processing such as grinding to lower the electrical resistance.

However, the electrical contact parts peeled off by grinding are also exposed to the outside, resulting in further corrosion.

In the case of corrosion, as a result, the electrical resistance increases and the electrical resistance becomes nonuniform, resulting in a large electrical contact resistance with the opposing electrically conductive object. In particular, there is a disadvantage that the RF performance or transmission and reception performance is deteriorated when used for RF or antenna.

In addition, when the mechanical strength of the surface of the metal case composed of aluminum, aluminum alloy or magnesium or magnesium alloy is relatively weak, and the mechanical strength of the metal substrate is strong, the elastic electric terminals made of elastic metal are repeatedly in mechanical contact with each other. The contact portion of the metal case surface has the disadvantage that it is easily worn or worn out and it is difficult to continue providing reliable electrical contact.

As such, the surface of aluminum or aluminum alloy or magnesium or magnesium alloy used in the case of smart phone is easy to corrode and the mechanical strength is weak, so that it is difficult to reliably make electrical contact with the electrical terminals having opposing elasticity. There is a disadvantage that the transmission and reception performance is bad.

In order to solve this problem, according to the prior art body is welded on the surface of the electrically conductive object consisting of aluminum, aluminum alloy, magnesium or magnesium alloy, and having a metal core and a plating layer formed on the upper and lower surfaces of the core, respectively; A contact layer formed on an outer surface including at least an upper surface of the body; And an adhesive tape adhered to a lower surface of the body, wherein the body and the object are melted with each other by welding to form a welding layer between the lower surface of the body and the surface of the object. It has been proposed an electrical contact terminal in which a terminal and the object are mechanically and electrically connected.

In such an electrical contact terminal, since the electrical contact terminal protrudes from an object such as a case and is temporarily fixed by an adhesive tape, the position of the contact terminal is changed due to vibration or shock during welding or handling process such as ultrasonic wave provided with vibration. There is this.

For example, when a plurality of electrical contact terminals are welded to one case, when one electrical contact terminal is welded, another electrical contact terminal positioned nearby and waiting for welding may be separated.

In addition, when the size of the electrical contact terminal is small, there is a disadvantage that it is difficult to automatically mount by the surface mounting by the adhesive tape adhered to the lower surface.

In addition, since the material of the case and the material of the electrical contact terminal including the plating layer is very different, it is difficult to join by welding between dissimilar metals, and because the bonding force is insufficient, the fixed contact terminal may be separated from the case by external impact. There is a problem. For example, the outermost layer of the plating layer is made of gold and is not melted at the temperature at which the case of the aluminum alloy is melted, so that welding of the gold and the aluminum alloy is difficult to provide a reliable weld joint.

In addition, since the material of the case is different from that of the electrical contact terminal, chemical-electrical change (galvanic corrosion, etc.) may occur at the welded area where the contact terminal and the metal case come into contact with each other, thereby causing attenuation or distortion of the electrical signal and quantity. There is a problem.

In addition, the pressure-sensitive adhesive tape formed on the lower surface of the electrical contact terminal has a disadvantage in that impurities are present in the joint part due to the high temperature generated during welding.

In addition, since the melting point of the electrical contact terminal material is higher than the melting point of aluminum or magnesium, a large amount of energy is consumed during welding.

Accordingly, it is an object of the present invention to provide an electrical contact terminal that is economically and reliably easy to mount to a metal case by surface mounting.

Another object of the present invention is to provide an electrical contact terminal which is hard to be changed or separated by vibration or shock during transport, handling and welding.

It is another object of the present invention to provide an electrical contact terminal which is not easily detached by external impact during handling after mounting on a metal case.

It is another object of the present invention to reduce the occurrence of electrical signal and amount of attenuation or distortion due to less corrosion such as galvanic in the welded area in contact with the metal case and electrical contact terminals that can minimize the occurrence of environmental corrosion To provide.

Another object of the present invention is to provide an electrical contact terminal which consumes less energy during welding.

It is another object of the present invention to provide an electrical contact terminal having a minimum amount of impurities in a welded portion.

It is another object of the present invention to provide an electrical contact terminal having a wide welding site.

Another object of the present invention is to provide an electrical contact terminal in which the electrical contact terminal is formed at a uniform height in the receiving groove.

Another object of the present invention is to provide an electrical contact terminal having good abrasion resistance with an electrically conductive elastic clip in contact with each other.

According to an aspect of the invention, the electrical contact terminal is mounted to the metal case, the body consisting of non-ferrous metal; And a plated layer including at least two protrusions protruding in a radial direction on a side of the body, the plated layer including at least nickel on one side of the body, and providing a plane for vacuum pickup in the plated layer, The projection is provided with an electrical contact terminal, characterized in that formed over at least a portion along the thickness direction of the body.

Preferably, the nonferrous metal is the same or similar to the material of the metal case, and the nonferrous metal may be aluminum, aluminum alloy, magnesium or magnesium alloy.

Preferably, the shape of the protrusion may be a tapered shape such that the middle portion is highest in the thickness direction of the body and lowered toward both ends.

Preferably, the body forms a circle or a square, the protrusions all have the same or similar shape, and may be formed at equal intervals along the edge of the body.

Preferably, the plating layer may be a nickel / gold plating layer, a nickel-gold alloy (cobalt) plating layer, or a nickel alloy palladium) -gold alloy (cobalt) plating layer.

Preferably, the body and the protrusion are formed at the same time by the press mold, the protrusion may be wider and the taper toward the end of the width of the portion connected to the body, or may be a thin fin (fin) shape.

Preferably, the hardness of the protrusion may be less than or equal to the hardness of the case.

According to another aspect of the present invention, a structure for mounting an electrical contact terminal on the surface of the metal case, the electrical contact terminal is received in the electrical contact portion of the surface of the case in electrical contact with the elastic metal clip mounted on the circuit board An accommodating groove is integrally formed, and the electrical contact terminal includes a body made of the same or similar material as that of the metal case, and a plating layer including at least a nickel layer formed on the body and extending from the side of the body. And at least two protrusions deformed by an external pressure, the horizontal area of the receiving groove is larger than the horizontal area of the body, and the protrusion extends from the body to the inlet of the receiving groove. It has a size of about a degree, and after the protrusion is crushed into the receiving groove, the body and the stone This part meet in the receiving groove there is provided a mounting structure of an electric contact terminal, characterized in that the sealing by welding.

Preferably, a taper is formed at an inlet edge of the receiving groove, and the protrusion may have a dimension and a shape that span the taper.

Preferably, the depth of the receiving groove is equal to or smaller than the height of the body and does not penetrate the body up and down.

Preferably, the welding may be ultrasonic welding.

Preferably, the body and the receiving groove may be circular or rectangular in shape.

Preferably, the metal case may be any one of aluminum, aluminum alloy, magnesium or magnesium alloy.

Preferably, the electrical contact terminal may be reel taped to a reel carrier such that the upper surface of the plating layer is vacuum picked up.

Preferably, the bottom surface and the protrusion of the body of the electrical contact terminal may be welded by ultrasonic to the bottom and sidewall of the receiving groove, respectively.

According to the above structure, it is easy to economically and reliably mount the electrical contact terminal in the storage groove of the case by reel-tapping and vacuum picking up, and it is possible to press the projection formed in a thin thickness with a small force and easily insert it into the storage groove. There is an advantage.

In addition, since the deformed portion of the projection presses the side wall of the storage groove while the electrical contact terminal is inserted into the storage groove so that the electrical contact terminal is not easily detached, even if vibration or shock occurs during transportation, handling or ultrasonic welding. The electrical contact terminals are not easily moved or separated from the receiving groove.

In addition, an even number of protrusions are formed symmetrically at the position of evenly dividing the body, so that the electrical contact terminals are balanced to facilitate work and balance the weight, and the upper and lower sides of the body are flat to facilitate vacuum pick-up and wide welding area. Has the advantage.

In particular, since the projections are welded after contacting the sidewalls of the storage grooves, the projections are welded to the sidewalls of the storage grooves, so that the welding area is large.

In addition, the bonding of the same or similar metals by welding, the good bonding strength between the electrical contact terminal and the case, the less occurrence of corrosion due to electrical and chemical changes at the welding site, the less attenuation or distortion of the electrical signal, and the less It is less likely to occur, and as a result, the reliability of mechanical and electrical coupling between the electrical contact terminal and the case is improved.

In addition, since the electrical contact terminal is fixed to the receiving groove before welding, the welding operation is convenient and the electrical contact terminal can be mounted at the correct position of the case.

In addition, there is an advantage that the electrical contact terminals are sufficiently inserted into the receiving grooves with a uniform height by the force provided during the ultrasonic welding, and as a result, the electrical contact terminals are formed at the uniform height in the case.

In addition, the use of a metal material with a low melting temperature requires less energy during welding.

In addition, since there is no impurity such as an adhesive tape in the welding portion between the contact terminal and the case, the impurity is minimized even after welding.

In addition, good strength and nickel at least in the upper portion of the electrical contact terminal are sequentially formed, wear resistance of the electrically conductive elastic clip in contact with each other.

1 shows an exploded view of an electrical contact terminal applied to a metal case.
Figure 2 (a) is a perspective view showing an electrical contact terminal applied to the present invention, Figure 2 (b) is a cross-sectional view along bb.
3 (a) to 3 (c) show that the electrical contact terminals are applied to the metal case.

Technical terms used in the present invention are merely used to describe specific embodiments, it should be noted that it is not intended to limit the present invention. In addition, the technical terms used in the present invention should be interpreted as meanings generally understood by those skilled in the art unless the present invention has a special meaning defined in the present invention, and is excessively comprehensive. It should not be interpreted in the sense of or in the sense of being excessively reduced.

In addition, when a technical term used in the present invention is an incorrect technical term that does not accurately express the spirit of the present invention, it should be replaced with a technical term that can be properly understood by those skilled in the art. In addition, the general terms used in the present invention should be interpreted as defined in the dictionary or according to the context before and after, and should not be interpreted in an excessively reduced sense.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded view showing an electrical contact terminal applied to a metal case, Figure 2 (a) is a perspective view showing an electrical contact terminal applied to the present invention, Figure 2 (b) is a bb of Figure 2 (a) According to the cross-sectional view.

The electrical contact terminal 100 is welded and mounted on the surface of a metal case which is an electrically conductive object made of a lightweight nonferrous metal of aluminum, aluminum alloy, magnesium or magnesium alloy, and the surface of the electrical contact terminal 100 is easily picked up by vacuum. It is flat and can be packaged in a reel carrier, supplied and vacuum picked up.

Here, the electrical contact terminal 100 is composed of a body 130 and a protrusion 130 formed integrally extending to a portion of the body 110 and the upper and lower surfaces forming a plane.

In this embodiment, the electrically conductive object is a metal case (210, 220) of the mobile phone 200, the corrosion of the case (210, 220) in the portion of the case (210, 220) on which the electrical contact terminal 100 is mounted No insulation coating layer is formed for prevention.

In this example, the electrical contact terminal 100 is installed on the inner surface of the lower case 210 so that the elastic metal clip 300 mounted on the circuit board 230 is electrically connected to the electrical contact terminal 100 by mechanical contact. Take the example structure.

An accommodating groove 212 having a predetermined dimension is formed at a portion where the clip 300 of the case 210 contacts, and an electrical contact terminal 100 is inserted into the accommodating groove 212 to be mounted. 100 may be integrated with the case 210 by ultrasonic welding in a state in which the groove 100 is physically inserted into the receiving groove 212.

The storage groove 212 is a part of the case 210 is formed integrally in the case 210 is dug by CNC milling, the storage groove 212 means a groove that does not penetrate the case 210 literally.

In this embodiment, the storage groove 212 has a circular horizontal cross section, such as the body 110 of the electrical contact terminal 100 for good workability.

The metal clip 300 is mounted on a portion of the circuit board 230 that faces the electrical contact terminal 100, for example, by soldering and mechanically contacts the electrical contact terminal 100 mounted on the case 210.

The electrical contact terminal 100 has a plating layer 120 formed on a portion of the body 110 that the clip 300 contacts, and the plating layer 120 includes at least a nickel layer.

The body 110 is made of the same or similar aluminum, aluminum alloy, magnesium or magnesium alloy as the case 210, so that the welding is easy, the welding strength is good, and the electrical and chemical changes are small at the welding site.

Here, the term 'similar' is interpreted to mean that a material having the same or similar properties as the main metal component is used because there are many kinds of aluminum alloys and magnesium alloys.

If the material of the body 110 is significantly different from the material of the case 210, for example, copper alloy or iron alloy may have the advantage of high strength, but the melting temperature is different and the material performance is significantly different economical The disadvantage is that it is difficult to provide reliable ultrasonic welding.

In this embodiment, the electrical contact terminal 100 has a disc shape of about 1.2 mm to about 4.0 mm in diameter, and may be about 0.1 mm to 0.4 mm in thickness, but is not limited thereto.

The electrical contact terminal 100 may have a thickness equal to or greater than the depth of the accommodating groove 212 to protrude from the case 210. For example, the depth of the accommodating groove 212 may be 0.1 mm to 0.3 mm. .

When the electrical contact terminal 100 is in the shape of a disc, there is an advantage in that the direction is less easy to reel taped and economical manufacturing is easy.

Here, the electrical contact terminal 100 is reel taped to the reel carrier so that the top surface of the plating layer 120 is vacuum picked up.

The plating layer 120 may be composed of a nickel, nickel-gold plating layer, nickel-gold alloy (cobalt) plating layer or nickel-nickel alloy (palladium) -gold alloy (cobalt) plating layer.

In particular, the plating layer 120 is an electrical and mechanical contact with the clip 300. The hardness of the nickel layer is greater than that of the case 210, so that the contact terminal 100 is in mechanical contact with the clip 300. The case 210 with low mechanical strength against is protected from friction, and gold or a gold alloy serves to prevent environmental corrosion.

The electrical contact terminal 100 may be made by forming a plating layer 120 on a sheet of plate-shaped aluminum, aluminum alloy, magnesium, or magnesium alloy and then punching it with a press mold, and the body 110 and the protrusion by one punching. 130 may be formed at the same time.

Optionally, the portion of the body 110 exposed by punching can be coated with a thin thickness corrosion inhibitor that prevents environmental corrosion and can burn out at high temperatures during the welding operation to evaporate. Such corrosion inhibitors may be composed of a polymer coating that is burned out at the welding temperature, leaving no residue after welding.

When the accommodating groove 212 has a circular shape, the diameter of the accommodating groove 212 is formed to be equal to or slightly larger than the diameter of the body 110 and slightly smaller than the length of the end portions of the protrusions 130.

The horizontal area of the accommodating groove 212 is about 1% to 15% larger than the horizontal cross-sectional area of the body 110, so that the body 110 is easily inserted into the accommodating groove 212 by a small force applied vertically. Even after being inserted, the number of empty spaces in the accommodating grooves 212 is reduced so that the phenomenon such as shaking is reduced.

In this case, the length between the end portions of the protrusions 130 protruding integrally from the body 110 when the electrical contact terminal 100 taped to the reel carrier is mounted to the receiving groove 212 by surface mounting by vacuum pick-up. As the projection 130 extends over the inlet edge of the storage groove 212 because it is larger than the diameter of the storage groove 212, the protrusion 130 or the storage groove 212 is crushed by pressure provided at the same time as or separately from the surface mounting. The electrical contact terminal 100 is forcibly inserted into the receiving groove 212.

As such, by being temporarily mounted and fixed before welding, the electrical contact terminal 100 can be easily moved or separated from the adjacent receiving groove 212 even if vibration or shock occurs during transportation, handling or ultrasonic welding of the case. It doesn't work.

As such, the electrical contact terminal 100 is formed in the receiving groove 212 while being crushed by the pressure of the thin projections 130 formed on the body 110 is provided with the surface mount or continuously provided after the surface mount. Can be mounted.

Here, the pressure is provided by pressing the body 110 with the pressure tool while being surface-mounted by the pressure tool provided in the surface mounting equipment to be shallowly fitted in the receiving groove 212, or after completing the surface mounting a separate jig By using the body 110 can be pressed at a time.

In this embodiment, the body 212 may be an elliptical or rectangular shape, but is not limited to a circular shape having no directivity, such as reel taping.

The inlet edge of the accommodating groove 212 is tapered to allow the electric contact terminal 100 to be smoothly inserted into the accommodating groove 120 in consideration of the dimensional tolerance provided during surface mounting and the dimensional tolerance of the electric contact terminal 100. 213 is formed.

The taper 213 may appropriately adjust the inclination angle and size of the taper 213 so that the electrical contact terminal 100 is easily inserted into the receiving groove 212 in consideration of the dimensions of the body 110 and the protrusion 130. .

That is, the taper 213 serves as a guide for easily inserting the electrical contact terminal 100 into the storage groove 212 when the electrical contact terminal 100 is mounted in the storage groove 212 by surface mounting by vacuum pick-up. do.

2, for example, the protrusions 130 are formed in pairs to protrude in opposite directions to each other and are formed at intervals of 90 degrees.

The protrusion 130 protrudes in at least one pair for smooth reel taping and balanced insertion, and is formed at regular intervals and a constant size along the edge of the body 110 so that the body 110 is mounted horizontally by vacuum pickup. Can be achieved.

In this embodiment, the shape of the protrusion 130 may have a tapered shape such that the middle portion is highest along the thickness direction of the body 110 and lowers toward both ends.

Due to the tapered protrusion 130 shape, the electrical contact terminal 100 can be reliably positioned in the taper 213 of the accommodation groove 212 when the surface is mounted by the surface mounting apparatus, and is stored by a small force after the surface mounting. It is easily inserted into the groove 212.

The protrusion 130 may have a variety of shapes, for example, a thick width at a portion connected to the body 110 and a thin end portion are formed so as to be easily deformed without tearing at the boundary with the body 110, or a thin pin. It may be formed into a (fin) structure.

For example, all of the protrusions 130 formed may have the same shape.

The size of the protrusion 130 is not particularly limited, but it is sufficient to be deformed while being easily fitted into the receiving groove 212 of the case 210 by a small pressure applied from above.

Protrusion 130 is formed at the same time when forming the body 110 in the press mold to make the body 110, may be formed over a portion in the thickness direction of the body 110 as shown in FIG.

As such, the electrical contact terminal 100 is easily inserted into the receiving groove 130 by the surface mount and the small pressure provided thereby, and is then physically fixed without being moved or separated by a small force.

Hereinafter, a process of inserting the electrical contact terminal 100 into the receiving groove 212 of the case 210 and ultrasonic welding will be described.

3 (a) to 3 (b) show that the electrical contact terminals are applied to the metal case.

The electrical contact terminal 100 is packaged and supplied to the reel carrier, and the vacuum pickup apparatus vacuum-picks the upper surface of the plating layer 120 of the electrical contact terminal 100 and mounts it in the receiving groove 212 of the case 210.

Referring to the original drawing of FIG. 3 (a), the protrusion 130 is placed on a taper 213 formed at an inlet edge of the receiving groove 212, and an inclined surface formed at a lower portion of the protrusion 130 is formed in the receiving groove 212. It is placed on the taper 213 to prevent the contact terminal 100 from being pushed in the horizontal direction.

After the contact terminal 100 is mounted in the receiving groove 212, press the body 110 with a pressing tool provided in the vacuum pickup device itself to be shallowly fitted in the receiving groove 212, or after completing the surface mounting Using a separate jig can be pressed by pressing the body 110 at once.

As a result, the contacts 130 and the side walls of the accommodation grooves 212 of the contact terminal 100 are crushed while the contact terminals 100 are inserted into the storage grooves 212 and temporarily mounted.

Although the side wall of the accommodating groove 212 may be crushed according to the pressure applied to the body 110, since the protrusion 130 is substantially deformed and crushed, the hardness of the protrusion 130 may be reduced. 212 is preferably equal to or lower than the hardness of the formed case 210.

When the electrical contact terminal 100 is pressed down from the top while surface-mounted, as shown in FIG. 3 (b), the deformed portion 132 is formed while the portion of the protrusion 130 contacting the side wall of the receiving groove 212 is crushed. do.

The deformable portion 132 may be formed in various structures. For example, as illustrated in FIG. 3 (b), the deformable portion 132 may be unevenly deformed along the thickness direction or may be folded in the thickness direction.

By such insertion, the electrical contact terminal 100 and other electrical contact terminals positioned adjacent thereto can maintain the inserted position.

As is well known, ultrasonic welding is achieved by pressure and heat. As shown in FIG. 3 (c), when ultrasonic welding is performed at each position 112, a portion where the deformable portion 132 of the protrusion 130 and the receiving groove 212 are in physical contact with each other, the body 110, The contacted portions between the bottoms of the receiving grooves 212 are melted and fused together.

Here, each position 112 is formed at the time of ultrasonic welding is formed at a time by a plurality of projections on the surface of the ultrasonic welding jig.

The electrical contact terminal 100 and the case 210 are made of the same or similar materials are melted at the same or similar temperature to each other made of one material and bonded to each other.

In the ultrasonic welding, the nickel and gold constituting the plating layer 120 on the upper surface of the body 110 has a higher melting point than the aluminum alloy constituting the body 110, and thus the plating layer 120 does not change due to welding.

By the force provided during the ultrasonic welding, the electrical contact terminal is sufficiently inserted into the receiving groove at a uniform height, and as a result, the electrical contact terminal is formed at the uniform height in the case.

Thus, the area of the welded part is large, and the welding adhesive force is good.

In the present invention, for example, ultrasonic welding in which pressing force is provided may be performed, but laser welding in which no force is provided may be performed. In this case, since the pressing force is not provided, the electrical contact terminal 100 cannot be reliably inserted into the receiving groove 212, and an apparatus and a process for additionally inserting the electrical contact terminal 100 into the receiving groove 212 are additionally added and the laser is added. The disadvantage is that burnt spots remain on the welded area.

Since the storage groove 212 is a structure that does not penetrate up and down literally, even if the electrical contact terminal 100 is placed in the storage groove 212 and the pressure is not released in the other direction, the electrical contact terminal 100 is the case 210. It is possible to maintain a uniform height reliably.

As described above, while the electrical contact terminal 100 is fitted into the receiving groove 212, the deformable portion 132 of the protrusion 130 pressurizes the sidewall of the receiving groove 212 so that the electrical contact terminal 100 is not easily separated. Since the vibration is generated during the ultrasonic welding, the adjacent electrical contact terminals 100 are not separated from the accommodating groove 212.

The bonding force of the electrical contact terminal 100 and the case 210 is greatly improved by the joining by the ultrasonic welding of the same or similar material, and the electrical contact terminal 100 and the case 210 are made of the same or similar material to be electrically and Less chemical change, less attenuation or distortion of electrical signal, less corrosion and less environmental corrosion. As a result, the reliability of mechanical and electrical coupling between the electrical contact terminal 100 and the case 210 is improved. do.

Further, of course, since the electric contact terminal 100 is fixed to the receiving groove 212 before welding, the ultrasonic welding operation is convenient, there is no change in position during movement, and can be mounted at the correct position of the case 210.

The foregoing description will be apparent to those skilled in the art that modifications and variations may be made without departing from the essential features of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

100: electrical contact terminal
110: body
120: plating layer
130: turning
200: mobile phone
210, 220: case
212: storage groove
230: circuit board
300: elastic clip

Claims (17)

It is forcibly pressed into the receiving groove formed in the metal case and fixed.
A body made of non-ferrous metal; And
Consists of at least two projections protruding in the radial direction on the side of the body,
A plating layer including at least nickel is formed on an upper surface of the body, and provides a plane for vacuum pickup in the plating layer,
The protrusion is formed over at least a portion of the body along the thickness direction of the body. delete In claim 1,
The shape of the protrusion is the electrical contact terminal, characterized in that the middle portion along the thickness direction of the body is the highest and tapered to be lowered to both ends. delete In claim 1,
The protrusion is an electrical contact terminal, characterized in that formed at even intervals along the edge of the body. delete In claim 1,
The body and the protrusion are formed at the same time by the press mold,
The protrusion has a wider portion of the portion connected to the body, the taper toward the end, or an electrical contact terminal, characterized in that a thin fin (fin) shape. In claim 1,
The hardness of the protrusion is an electrical contact terminal, characterized in that less than or equal to the hardness of the case. As a structure for mounting the electrical contact terminal on the surface of the metal case,
An accommodating groove for accommodating the electrical contact terminal is integrally formed in an electrical contact portion of the surface of the case which is in electrical contact with the elastic metal clip mounted on the circuit board,
The electrical contact terminal is composed of a body, a plating layer including at least a nickel layer formed on the body,
Protruding from the side of the body, having at least two protrusions deformed by external pressure,
The horizontal area of the receiving groove is larger than the horizontal area of the body,
The protrusion has a size such that the body is over the inlet edge of the receiving groove by the protrusion,
And after the protrusion is crushed into the receiving groove, a portion where the body and the protrusion meet at the receiving groove is welded to each other by welding. In claim 9,
Taper is formed at the inlet edge of the receiving groove,
And the projection has a dimension and a shape covering the taper. In claim 9,
And the depth of the receiving groove is equal to or smaller than the height of the body and does not penetrate the body vertically. In claim 9,
The welding is mounted structure of the electrical contact terminal, characterized in that the ultrasonic welding. In claim 9,
The body and the receiving groove is a mounting structure of the electrical contact terminal, characterized in that the circular or square of the same shape. In claim 9,
The metal case is the mounting structure of the electrical contact terminal, characterized in that any one of aluminum, aluminum alloy, magnesium or magnesium alloy. In claim 9,
Hardness of the protrusion is mounting structure of the electrical contact terminal, characterized in that less than or equal to the hardness of the case. In claim 9,
And the electrical contact terminal is reel taped to a reel carrier so that the upper surface of the plating layer is vacuum picked up. In claim 9,
And a bottom surface and the protrusion of the body of the electrical contact terminal are respectively welded to the bottom and sidewall of the receiving groove by ultrasonic waves.

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