TW469303B - Contact element - Google Patents

Abstract

It is difficult to transmit large processing current on the surfaces of printed circuit boards L using clamp-type contact organs 6, 7. In order to solve said problem, contact elements 15, 16 having one or more contact surfaces 26 are disposed on the contact organs 6, 7. The shape of the contact surfaces 26 are configured in such a way that no damages occur in the areas of the conductive surfaces adjacent to the contact surfaces 26 when large currents are transmitted from the contact elements 15, 16 printed on the electrically conductive surface of printed board material L on the contact surfaces to the conductive surface.

Description

Bulletin i 4693 υ3Α7 ...... .------_ B7____ V. Description of the invention (1.) The invention focuses on the -turn element, which is basically a flat-shaped object for electrolytic treatment and riding Electricity, and a contact mechanism for this object, which has at least one long handle and at least one contact element, at least one of f-the contact element is installed at about 90% of f. Shaw's long handle and the long handle and its contact element can be moved by a restoring force so that the contact element can be pressed on the object. In addition, the present invention also relates to a method for feeding an object. This contact mechanism is mainly used in electrochemical processing equipment. When an object is electrolytically processed, it must be transported and electrically connected so that it can feed current when it comes into contact with a processing liquid. There are many types of devices used for this purpose. For example, in υ§_Α_ 4,767.146, a support clip for a circuit board is described, which has two arm ends and two gripping arms are respectively provided on it. The two arm ends provided with the gripping arm can be turned to an upper shaft by a spring force to press the lower ends together. The lower end of the gripping arm is shaped like a pair of pliers. Among them, two pliers-like protrusions are provided on the grip arm at one arm end, and one pliers-like protrusion is provided on the grip arm at the other arm end. This contact and support device is applied to the circulating electrolytic cell equipment, and its circuit board is kept in a vertical orientation, and then inserted into the immersion tank. Another method 'is to transfer the objects horizontally through separate processing stations. In DE 25 12 762 B2, it is proposed that a current contact spring plate fixed on a workpiece support is used for contacting a plated object. Here, the size of this paper applies to Chinese National Standard (CNS) A4 (210 X 2 Lan 7 ^ _ Chu) (Please read the precautions on the back before filling this page) -7 1 'K ------- -Order --------- line (printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 4 6 9 3 〇 3

The object is sandwiched between the contact springs made of two spring bows. In terms of the electrolytic treatment of flat objects, especially circuit boards, for a long time, they have also used a type of electroplating device that transports their flat plates in a horizontal direction. The slab here will come into contact with some processing liquids, such as those used in electroplating baths or liquids used in electrolytic etching. In order to feed current to its plate, appropriate contact elements must be installed. In addition, the flat plate must be transported through this device through the transport mechanism. In addition, a device is described in WO 97/37062 A1 for electrochemically treating areas on a circuit board that are said to have leading edges but are isolated from one another. To enable these areas to be energized, brushes are used so that the structured surface to be treated is energized via its conductive fine fibers. The circuit board will be pointed in a horizontal direction and horizontal motion, passing next to the stationary brush, and brushing the front of the brush across its surface. This device is not suitable for feeding large currents to a circuit board. In practical applications, it is also difficult to find a solution to make its brushes have sufficient life, but not hurt the surface of the circuit board. From DE 36 45 319 C2, a flat object, such as an electrolytic treatment structure for a circuit board, is known. In this architecture, the circuit board is transported in a horizontal direction and a horizontal motion direction, and is supported by a clip, which is used as a mechanism for its transportation and contact. The clips are composed of two bows, and are deflected to the connection points or placement points for conducting electricity by the spring force in the following ways: the lower ends will be pressed against each other, Hold the side edge (plated side edge) of the circuit board. This paper is a standard for households (CNS > A4 GX 2 ^^ Dong) (Please read the precautions on the back before filling this page) ----- Line (printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economics, printed by 4 6 9 3 Ο 3 Α7 --------- Β7 ____ V. Description of the invention (3 .) The actual width of the side edge is 10 to I5 cm. Generally speaking, each circuit board will be on at least one side, and it will be in contact with many suns. The current on this type of device is actually constant. It is improved to accelerate the electrolytic treatment of circuit boards. On common circuit boards, the typical current value has reached up to now, such as 20 to 80 amps per circuit board side and each clip contact, assuming the distance between the clips It is 60 mm. All currents input to one side of the circuit board using multiple clips are even higher. When electrolytic treatment is performed on a circuit board with copper clad on both sides, if it is used, When you hold and power clips, the current on each clip is 40 to 160 amps. A large current like this needs to be fed It is still difficult to reach a thin layer of the base conductive layer on the plate. At high currents, the electrolyte near the contact point will lack metal ions, and the circuit board will be plated with the metal layer near the contact point. Burning phenomenon (= metal layer with large grains). When the copper base layer is to be electroplated with a smaller thickness, it can be seen that the phenomenon described is more obvious. According to various For different reasons, such as when a small staggered hole (100 microns or less) must be drilled with laser light, or, for example, on a thicker copper base layer, to avoid over-etching, or even save material The reason, and the reason for optimizing the electrical characteristics of the flat plate, its coating thickness has changed from 17 microns in the past to 6 microns today, or even 0.7 microns (applied to a specific processing technology (SBU technology = 备 equential- Once uild-Πρ)), it will be unavoidable. This paper size applies the Chinese National Standard (CNS) A4 specification (210 mm) (Please read the precautions on the back before filling this page) Η--* 、 Installation ------ I order --------- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Α7 Β7 V. Description of the invention (4.) The conventional equipment can no longer meet Increasing requirements for modern circuit board processing. The "basic copper layer" at this contact point and the area around the surface of the circuit board will "burn". This indicates that a large black area will be formed at this location. The copper layer will be damaged, and some of them will even be completely destroyed. Although this damage and destruction is limited to a certain range, there should not be any rail structure built on the circuit board material within this range. However, the range of such damage is often very large ', so that the edge area of the guide rail structure is also damaged at the same time. In this case, the flat plate we processed was immediately turned into a scrap. The most influential actors in the cautery are those embers (fine oxide steel) that are loosely attached to the plate. These embers will be spread on the surface of the plate with the electrolytic current and will be embedded in the metal plating opportunity. Inside. The result will make this tablet unusable. Based on cost considerations, we always hope that the width of the plating side edge is getting smaller and smaller, but at the same time we want to increase the thickness of its processing current and reduce the thickness of the copper base layer ', thus causing the aforementioned problems. Therefore, 'the basic problem of the present invention is to avoid the shortcomings of the conventional device and method, and then find a way' so that we can still achieve a satisfactory electrolytic treatment in the large processing of electric washing, and let The damage to the metal layer on the surface of the plate can only be allowed in a very narrow edge area, and even when applied to a thin copper layer on the plate, the aforementioned requirements can still be met. The problems listed above are solved by using the contact element of the first patent application scope of the present invention. The contact mechanism is based on the Chinese paper standard (CNS) A4 specification (210 X 297h ^ ~) according to the private paper size of the patent application scope Γ4.: Ί ------------- ί, -------- Order --------- line Γ '} {Read the precautions on the back first (Fill in this page)

Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

469303 item 14 ', and the method of feeding current is solved according to item 17 of the scope of patent application. The contact elements are basically flat-shaped objects, such as circuit boards, when they are electrolytically processed on a so-called horizontal device to feed the objects to be processed. Among them, the circuit boards are transported in a horizontal direction. It is basically referred to as a horizontal direction or a substantially vertical direction. Electrolytic treatment refers to electrolytic metal plating and electrolytic etching, and even other types of electrolytic treatment 'such as electrolytic cleaning. The contact element has one or more contact surfaces, and the shape of the contact surface is to allow a contact element pressed on a conductive surface to cause a large current to flow to the contact surface on the copper surface. There is no damage in the surface area near Hao. This high current can be fed not only to the steel surface used for circuit board materials, but also to surfaces made of zinc / lead alloys or other conductive materials. The contact mechanism of the present invention has at least one long handle and at least one contact element. The contact element is placed on one of the ends of the long handle. The end of the long handle can be one such as 90. Angle, bent relative to the long handle. The long handle can also be a straight pointing. The long handle and its contact element can be moved with a restoring force so that it can be pressed against the surface of the object. In an excellent application, the contact mechanism is composed of two long handles, and the ends of the long handles are respectively bent by about 90. . The bent ends are each equipped with a contact element according to the invention. The two long handles can slide against each other in the following ways: they can be moved towards the contact elements opposite each other or they can be separated from each other. When the clips are closed together, the two are basically flat. The paper size is in accordance with China National Standard (CNS) A4.

Install -------- order --------- line (please read the precautions on the back before filling this page) A7 469303 --------- V. Description of the invention (6 .) Faces, they will evenly cover each other. Basically, these planes are pressed against each other using spring force. The method of the present invention is used to lock the current to a flat object. Among them, at least one contact element of the present invention for conducting electricity is pressed on the surface of the object, so that the contact element and the object are in contact with each other. That generates a current. Even under a large current of, for example, 40 to 160 amps, after using the contact element of the present invention, it is possible to rest assured that a single contact mechanism of the present invention has at least one contact element of this type to feed current to Circuit board. Compared with the method using traditional contact elements, the copper surface area pressed on the contact point of the surface of the processed object will not be damaged when a large current is applied. Therefore, for example, a current of ampere, of course, the same current less than 60 amps, can be fed to a piece of circuit board material whose copper layer is, for example, 6 micrometers thick, through the contact element of the present invention, without Significant damage occurs on the surface area near its contact point, for example, the formation of a black particle. "When applying conventional methods, if the circuit board material is made of a thinner steel layer, such as a layer of 0.7 microns, At low currents, the aforementioned problems may already occur. With the contact element of the present invention, the aforementioned damage cannot be seen on this material even under a current such as 40 amperes. After further research on the problems that occurred on the conventional device, we determined that some of the contact points on the surface of the circuit board would be severely damaged or completely destroyed. In some cases, even the resin layer of the base material under the copper layer will be hollowed out, and some will turn black and be subject to (please read the precautions on the back before filling this page) ------ -—Order! — I i-Printed by the Consumers' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs f This paper is in accordance with Chinese National Standard (CNS) A4 Regulations (21〇x 29 ^ Public Meals) 469303 A7 ________B7________ 5. Description of the Invention ) Damage. These damages are often not limited to the contact surface itself, but will expand to a larger scale, so that the surface area of the circuit board that should have formed the rail line pattern will also be damaged. .. based on this observation result 'so we guess that the contact points on the surface of the circuit board and between the contact points of the contact mechanism, such as a clip, the interface material is even in the presence of a treatment liquid , Will still be intensely heated by the passing current, causing the aforementioned damage. The use of the traditional contact mechanism 'can not effectively discharge the heat generated by it within a certain cost. Since the contact mechanism must be made of a material that is chemically resistant ', we prefer to use titanium. One disadvantage of this material is its poor thermal conductivity. It is not feasible to replace copper with better thermal conductivity 'because its chemical resistance is very lacking, so when the clip is removing metal, it will melt away. After the contact point is pressed against the surface of the circuit board, the improvement effect can be achieved. In this way, the aforementioned damage to the copper layer and the insulating material can be avoided. This solution is still unsatisfactory because increasing the force creates difficulties when the contact points are opened and closed. Typical contact forces are between 10 and 30 Newtons. In addition, since the thickness of the steel layer on the outer layer of the circuit board is gradually decreasing, the contact force cannot be arbitrarily increased. Very thin copper layers are particularly sensitive, such as at a thickness of 0.7 micron ', and can be damaged or destroyed under large contact forces, and sometimes even sheared. As a result, the current is blocked or even interrupted. This paper is suitable for the Standard for Financial Family Care Standards (CNS) A4 (21Q χ 29 to love) (Please read the precautions on the back before filling this page). · «. *----— 丨 — Order * ί- -Line. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 4 6 9 3 0 3 A7 B7 V. V. Description of the Invention (8.) One way to solve the problems mentioned above is to increase the contact surface of the contact points. However, this method can only be effective if the plane that can be used for the plating side edge is large enough. Because the current trend is to reduce this width as much as possible 'in order to reduce the proportion of planes that cannot be used on the circuit board, this response is not feasible. On the contrary, the method of the present invention is to lengthen the contact surface of the contact element, that is, the length of the boundary line between the corresponding contact surface on the flat object and the surrounding treatment liquid, relative to the contact surface thereof. In this way, the contact element of the present invention basically has a contact surface bounded by a boundary line, and the shape of this contact surface is constituted in the following manner: the square of the total length L of all boundary lines The size F of all contact surfaces is at least 25, preferably at least 30, and more preferably at least 35. Basically, the contact surfaces are preferably flat. _Boundary lines are basically flat contact surfaces. It also indicates the interface of the component and its surroundings, as well as the interface of the contact component and its pressed silk surface. When we use a contact element, and its contact surface transitions to its side via a rounded edge, the boundary line is ^ ^ contact element, miscellaneous, and the transition between the surface of the object . Even in this case, the boundary line is the outer boundary of the substantially planar contact surface. Separately, the "contact elements can be provided with at least _ large openings from each other by the compartments" and the protrusions have-contact surfaces, the contact surfaces of which are basically '= -S- two > --------- --- ^ Installation -------- Order --------- line (Please read the precautions on the back before filling out this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

Printed by the Intellectual Property Bureau's Consumer Cooperatives of the Ministry of Economic Affairs 469303 V. Description of the invention (It is a plane (two-dimensional contact surface is basically set in the _ plane, the way is to let the Caishi align between the contact surfaces on the road board) It can form a contact that is energized. Therefore, the contact surface is usually pressed above the plated side edge of the circuit board with a contact force. In another excellent application form, the contact element may have at least a contact surface. It is basically a flat contact surface that has a shape 'used to grow its boundary line relative to the boundary line of a conventional contact element: it is derived from a simple two-dimensional geometry and is changed in an appropriate manner. It can be said that the structure of the contact surface can be star-shaped, clover-shaped, or bell-shaped. Other miscellaneous materials are also worth selling, such as irregularly shaped edges, which are similar to two-dimensional shapes. Both have excellent lone lines. For example, they can also have nicks, which are serrated. The structure of the contact element of the present invention has some advantages we seek. But the reason is unknown. We speculate that through After the design we have chosen, the contact point can achieve a better cooling effect, and large currents can be evenly fed, especially into very thin metal layers. Because of its long boundary line, Therefore, the current density is small on the interface between the contact point and the object to be processed. Because the current will flow from the contact point to the surface of the circuit board, the material is usually heated significantly. This heat is likely to cause the circuit The reason for the damage or destruction of the plate material. Since the contact element of the present invention has many protrusions provided with a contact surface, and there are some compartments therebetween, or because the contact surface has a regular or irregular geometric shape, The treatment liquid can make a greater contribution to the cooling effect of the contact point, which is far more than the conventional contact with non-thermal conductivity and simple geometry.

17 —-------- Line ° · f Read the notes on the back and then fill out this page) Printed by the consumer cooperation of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (10.) The components are excellent. Here, the electrolyte will flow into the compartment between the protrusion and the surface of the circuit board, and into the arc around the contact element, thereby effectively removing the formed heat. In contrast, in the conventional contact element, the treatment liquid will only impact the entire contact point around the outer edge of the regular shape. Therefore, the cooling effect is obviously inefficient in this situation. In addition, by using the excellent structure of this contact element and its substantially planar contact surface, a better component placement on the circuit board surface can be used to establish a closer contact point than the conventional device. . In this way, its transition resistance and the heat generated at the contact point can be greatly reduced. In addition, this method can also prevent the sensitive and thin copper layer from being damaged 'because the local pressure on the surface is small. In a particularly advantageous form of application of this contact element, the protrusion has a cross section which is parallel to the plane in which its contact surface is located and which is substantially circular. For example, the structure of the protrusions may be cylindrical or have a conical cross section with a gradually decreasing contact surface. The preferred design is an even number of protrusions. In this case, it can be arranged in a column. For example, there can be six, eight, or ten such protrusions' arranged in two rows, and each two protrusions are directly opposed to each other, or the two rows of protrusions are put together in a slot. This cross-sectional structure is basically circular. Of course, other arrangements or other combinations can also be used to achieve this, such as a sawtooth-like outer surface and / or a three-by-three or four-by-four array. Come to decorate the touch points. In particular, we can also set four protrusions' and design them in the following way: design each contact surface on the corner of a square parallelogram or trapezoidal trapezoid. Another feasible way, (Please read the precautions on the back before (Fill in this page) .¾ -------- Order --------- line.

A7 469303 --------— B7 _ V. Description of the invention (11.) 疋 The protrusion is made into a cross section deformed by a circle, such as an ellipse, or four _ (square or Rectangle). In another application form of the present invention, at least one compartment in the shape of a clear groove is provided between the protrusions. For example, the protrusions may be formed by # multi-grooves on a contact point s] on a circular surface, for example, by being sharply cut. The groove formed will divide the circular plane into many bow-shaped, sometimes dentate-shaped, fine faces, and these rega intersect at the center point of its circular plane. For example, if there are two compartments in the shape of grooves, and they are perpendicular to each other, then the circular plane will be divided into four arc-shaped contact surfaces of the same size. When the treatment liquid strongly impacts its contact elements, in order to improve the material exchange and cooling effect, it can also be advanced. The aforementioned application form can greatly improve the impact effect. The contact element is basically made of a metal having electrochemical resistance, such as titanium, niobium, tantalum, or an alloy between these metals, or an alloy with other metals. Since these materials are used, in principle we do not need to take further protection measures for this contact mechanism to prevent it from being chemically invaded by the treatment liquid. It is also advantageous if the contact element is wrapped almost completely with an insulating material, such as a protective lacquer, to prevent it from being plated with metal during operation. In order to ensure that the circuit board can be contacted smoothly, only the contact surface must be provided with no insulating material. Since the contact points often need to be removed after passing through the plating room, the metal plated on the other surfaces of this mechanism is the same as ^ --------------- --Line ^ y. (Please read the precautions on the back before filling out this page) Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Employee Consumer Cooperatives This paper is printed in accordance with China National Standard (CNS) A4 (210%) 4 6 9 3 0 3 A7

/ P ___: _ _ B7 V. Description of the invention (12 ·) The samples must also be removed during the metal removal process. Therefore, the protective skin of the insulation material can also be omitted in principle. If the contact element is not made of the aforementioned poorly conductive metal, but is made of, for example, copper, corrosion protection is necessary. In many cases, 'copper does not have sufficient resistance to chemical attack by the treatment solution', so its contact surface is covered with a conductive, chemically resistant layer. This type of layer can consist essentially of gold, platinum, cobalt, ruthenium, germanium, alloys of these metals, or mixed oxides. The following description of the present invention is made with reference to FIGS. 1 to 6. Brief description of the drawings: Figure 1: A cross-sectional view of a circuit board electroplating device; Figure 1: A first application form of a contact element; Figure 3: A second application form of a contact element; Figure 4: A third application form of a contact element; 5: Various contact surfaces for other application forms; Figure 6: Contact clip. '' Shown in Fig. 1 is a cross-sectional view through a part of a circuit board electroplating apparatus, which includes a plating chamber 1 and a metal removal chamber 2. The structure in this device 'is basically accustomed to those having nothing to do with the contact elements 15,% of the present invention. The circuit board L is transported through the electroplating chamber on a transmission plane using a suitable guiding mechanism (not shown)! . Here, it is pointed horizontally, and 疋 is transported horizontally (vertical to the plane shown). The guide mechanism is generally composed of rollers. This paper size is suitable for towels (CNs) A4 secret (21Q χ Chu) (Please read the precautions on the back before filling this page) '^ -------- Order -------- -Line ^ y Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ^ 69303 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 V. Description of the invention (13 ·) When the circuit board L is pushed forward, some contacts are also required-some contact The mechanism 3 is used as the current-carrying contact of the circuit board L, and the structure here is a clip. This type of clip 3 can also be provided on the other side of the circuit board L so that the board can catch it from both sides and push it forward (outside the fan park that was lost in the pass). The clip 3 is made of titanium, so it can resist those corrosive treatment liquids 4. The circuit board L is transported in the plating solution 4 (the liquid surface 5), so it can be completely filled in the solution. Generally speaking, the circuit board has a copper base layer on both sides, so the current must be sent to both sides. In the demetallization chamber 2, there is a demetallizing liquid 19 suitable for demetallizing the clamp 3, and there is a liquid level 20 and an opposite electrode 21 above it. The contact clips 3 are driven by an endless chain or endless track 17, such as plastic, and compete with each other at a close pitch, such as a 6 cm pitch. The tracks are driven via rollers 18. The clip 3 uses an internal clip bow 7 to advance along a guide rail 10, and this bow is buckled on its rail. In this way, the clips 3 can pass through the plating chamber 1 and the metal removal chamber 2 one by one. The clip 3 is composed of two clip bows 6, 7 and the shaft center 8 is connected together, so when the outer bow 6 receives the force exerted by the pressure spring 9, it will go inwardly. There deflected. The compression spring 9 is hung between the two bow pieces 6 and 7 above its shafts ~ 8. When stationary, the pressure spring 9 will press the two bow pieces 6 and 7 together to close the clip 3. This situation is the case when the clip 3 is running in the plating chamber. When the clip 3 runs from the inside of the plated plate 11, its outer bow 6 will lean against the taxiway < please read the precautions on the back before filling this page) JV ^ -------- Order- -------- Line iJ. 1 paper size. Towels-Jiapika _A7 469303 V. Description of the invention (I4. 12 runs on the slope 11 to force the clamp to open against its spring force. The clamp The opening of 3 causes the circuit board L to be released again so that it can leave the device. On the return journey, the bow piece 6 will continue to lean on its slope ^, so the clip 3 will also remain in the open state. Clip 3 is powered via sliding contacts 13, 14. Here, its internal bow 7 will slide along sliding contacts 13, 14. In the plating room, its contact 13 is connected to the cathode, and In the demetallic room 2, its sliding contact is connected to the anode. When Shuangko 3 enters the electric clock room 1, the clip will enter the plating room from the side edge of the electric clock at the same time. The circuit board L inside is grasped. As long as the spring 9 can apply a force of 10 to 30 Newtons on the contact elements 15, 16, the clip 3 and the electric A solid mechanical connection can be achieved between the boards 1. When the clip 3 runs outside the metal room 2, the outer bow piece 6 leaves the ramp again, and the clip 3 is closed. The tail end of the taxiway 12 with the slope 11 is arranged in such a way that the clip 3 being closed can hold a piece of the circuit board L input into the device at this position. With the circuit board L The size and the distance between the clips 3 are different, a circuit board can be grasped by four to eight clips at the same time. When the circuit board L is clamped by the clip 3, the plate will be connected to the cathode, and Power is supplied via the / bone moving contact 13 and Shuangyu 3. When the opened clip 3 is run out of the plating room 1, it will advance to the metal removal room 2. Here, it will go through the contact 14 and Clip 3 came to the anode and was provided by him < Please read the notes on the back before filling this page) Binding --------- Line (0. Printed by the Consumer Consumption Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs Paper Standard Turning Towel Professional Standard (CNS) A4 Secret Stone χ 2 9f)

469303 V. Description of the invention (15. Electricity. The metal grown on the clip 3 during the electroplating period in the plating room 1 is used to remove the metal by using the anode polarization method to remove it. If To feed a large current, it is necessary to set the upper contact element 15 and the lower contact element 16 of the present invention at the tips of the contact bows 6, 7. These contact elements I5, I6 will be firmly pressed on the circuit board The corresponding position on the surface of the dagger. The first application form of the contact element 15 of the present invention is shown in Figure 2. The contact element I5 is fixed on the long handle 22 of the outer clip bow piece 6. The contact element I6 is also closed. The same way (not shown Phantom mosquito is on the long handle 23 of the Shuangzi bow piece 7. The contact elements ls, 16 are basically formed by a contact foot 27, and a protrusion fixed on it with a compartment M therebetween% In this application form, there are four protrusions M, and the protrusions are arranged on the corners of a square block. These fine protrusions of the purchase order ㈣ contact secrets, and they are all confined to the-boundary line 34. When When Shuangko 3 is closed, these contact surfaces 26 will be fixed. Pressed on some corresponding contact surfaces on the surface of the Wei board. Due to the planar characteristics of the contact surface 26, the contact surface between the protrusion 24 and the surface of the circuit board can be established-a tight electrical method with a small electrical conversion Contact. The protrusion 24 is made of steel in order to make a good electrical contact. The copper surface is also covered with a layer of sufficient thickness so that the protrusion 24 can have sufficient silver resistance to the treatment liquid. Other precious Metal or conductive mixed oxide as a protective layer is also a workaround. Since there is a compartment 25 between the protrusions 24, when the contact point 15 is fixedly placed on the circuit board L, The protrusion 24 can allow the processing liquid to flow between them. I_ This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 29 ^ 5 " {Please read the precautions on the back before filling this page) / r < Second Pack- ------ Order --------_ Line {A7 469303 V. Is it explained (1δ.)? In this way, its contact points 15, 16 may achieve an effective cooling effect 'So that the surface of the circuit board is not damaged by overheating. The two application forms are shown in FIG. 3. In this example, the contact element 15 (16 not shown) is also composed of the contact foot 27 and the protrusion 24 provided on the contact foot 27. In this example, the protrusion 24 is formed by a circular surface that is cut into the groove 25 sharply in the middle to form the compartment of the protrusion 24. In this example, there are two grooves 25 that are perpendicular to each other and cross the original circle. The surface is divided into four arched protrusions 24 that are symmetrical to each other. In this example, each protrusion 24 also has a single-sided contact surface 26 'and they are all confined within a boundary line 34. Third application of the contact point The 'form' series is shown in Figure 4. In this example, the contact foot 27 of the contact member 15 (16 not shown) has a long shape. Each of the protrusions 24 has a dot matrix shape arranged in a row, and is sharply cut out together with the compartments (grooves) 25 thereof. The protrusions 24 also have a single-sided planar contact surface 26, and they are all confined within a boundary line 34. By arranging the protrusions in a long shape, a large coverage plane can be established on the side of a small key, and at the same time, we have a sufficiently large contact plane F to be used. In this way, the width of the plated side edge, which has no use value, can be further reduced. '' Shown in FIG. 5 is another application form of the geometry of the contact surface 26. Each contact surface 26 is confined within a boundary line 34. We can use a star shape, a clover shape, or a dumb shape. In addition, the contact element 26 may also use one or more circles formed by a zigzag shape as its contact surface 26. The paper size of the knife is applicable to the Chinese National Standard (CNS) A4 specification (210 X 29 ^ # 'cent (please read the precautions on the back before filling this page) ¾ -------- Order ------- -Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 469303 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs

V. Description of the invention (Π, Figure 6 shows another different application form of the contact clip 3, while the contact elements 15, 16 of the present invention are fixed on the two bow pieces 6, 7 of this example. This example There are two bow pieces 6, 7 arranged parallel to each other. The outer bow piece 6 and the inner bow piece 7 are connected in such a way that the two can slide in a direction parallel to the long axis. The upper end of the inner bow piece 7 The structure is to enable it to advance along a guide rail, as shown in Figure 1 (guide rail 10). In this example, the long handle 22 of the outer bow 6 is attached to a slide inserted in the long hole. The bearing bodies 28 and 29 are inserted in a sliding bearing fixed on the long handle 23 of the inner 4 bow piece 7 so that it can move parallel to the long axis direction of the long handle. The lower end is bent about 90 in the same direction at different heights. The contact elements 15, 16 are provided at the ends of its two curved arms 30, 31. The two arms 30, 31 are pressed against each other via a compression spring 32 Together, the spring 32 is mounted in a fixed interior via an upper sliding bearing body 28 The bow piece 7 and a protrusion (not shown) fixed on an outer bow piece 6. The parallel movement of the outer bow piece 6 relative to the inner bow piece 7 can be used to contact the 7L pieces 15 and 16 The contact surface 26 can be superimposed accurately, so that an optimal contact can be made between the contact surface 26 and the surface of the circuit board L, because the circuit board is oriented parallel to the contact surface 26. ---- --------- ¥ -------- Order --------- line {< Please read the notes on the back before filling this page)

Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperative 469303 A7 _B7 V. Description of the Invention (I8.) Component Symbol Table 1. Plating Room 2. De-Metal Room 3. Contact Clip 4. Treatment Liquid 5. Level of Treatment Liquid 4 6 Outer clip bow 7. Inner clip bow 8. Axle center 9. Compression spring 10. Rail 1L ramp 12. Taxiway 13. Slide contact 14. Slide contact 15. Upper contact element 16. Lower contact element 17. Track 18. Roller 19. Demetallizing liquid 20. Demetallizing liquid 19 level 21. Opposite electrode 22. Long handle of the outer bow 6 of the contact clip 3 23. Long handle of the inner bow 7 of the contact clip 3 (please read first Note on the back, please fill in this page again) Loading -------- Order --------- Line [This paper size applies to the national standard (CNS) A4 specification (210) A7 B7 V. DESCRIPTION OF THE INVENTION (Η.) 24. Protrusions 25. Compartments between the protrusions 24. Contact surfaces on the protrusions 24. Contact feet 28. Plain bearing bodies 29. Plain bearing bodies 30. Outer arches of contact clips 3 Bending arm on 6 31. Bending arm on the inner bow 7 of the contact clip 3 32. Compression spring 33. Long hole 34. Boundary line L circuit board < Please fill in this page again for the matters needing attention)-, *. Packing -------- Order --------- line "Printed on paper standards of the Ministry of Economic Affairs, Intellectual Property Bureau Staff Consumer Cooperatives, this paper applies Chinese national standards ( CNS) A4 specification (210 X centimeters)

Claims (1)

4 ^ 9,3..0..3: Xu, A8 B8 C8 DS Weixiang 88113161 patent application patent Fanyuan Amendment I — a contact element, which is basically a flat-shaped object used as a feed when electrolytic treatment is performed, wherein the contact element (15, 16) has one or more contacts Surface (26), and the shape of the contact surface is to allow a contact element (15, 16) pressed on a conductive surface of a circuit board material (L), so that a too much current flows from the contact surface to the contact There is no damage to the conductive surface in the area of the conductive surface adjacent to the surface. 2. The contact element according to item 1 of the scope of patent application, wherein the contact element (15, 16) has a contact surface (26) bounded by a boundary line (34), and the shape of the contact surface is It is constituted in the following way: the square of the total length L of all boundary lines (34) and the size F of all contact surfaces (26), the proportion VF =-F of at least 25 〇3. According to the scope of the patent application The contact element, wherein the contact element (15, 16) is provided with at least two protrusions (24) separated from each other by the compartment (25), the protrusions each have a contact surface <26), and the contact The surface (26) is basically arranged in a plane, and the arrangement is such that all contact surfaces (26) and the corresponding contact surface on the circuit board 能 can form a current-carrying contact. 4. The contact element according to item 3 of the scope of patent application, wherein the protrusion (24) has a substantially circular cross section parallel to the plane where the contact surface (26) is located.孓 The paper continues to be used by the Chinese state -------- -23- (please read the note on the back before filling in this page) .1 Pack · Binding-Intellectual Property Bureau, Ministry of Economic Affairs, Consumer Consumption Du Printed 46 93 0 3 A8 B & C8 D8 Z3 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs VI. Patent Application Park 1 ― &quot; One by one ......... 5_According to Item 3 of the scope of patent application The contact element described above is provided with an even number of protrusions (24) 'and the protrusions (24 :) are arranged in a row. 6 'The contact element according to item 5 of the scope of the patent application, wherein there are four protrusions (24)' and the arrangement is to set each contact surface (26) in a square, parallelogram or Trapezoidal corner. 7. The contact element according to item 3 of the scope of patent application, wherein at least one compartment (25) having a groove shape is provided. 8. The contact element according to item 7 of the application, wherein a plurality of grooves (25) are provided, and these grooves divide the circular plane into a plurality of arcuate contact surfaces (26), and these grooves (Μ) is the intersection at the center point of its circular plane. 9. The contact element according to item 8 of the scope of patent application, wherein two grooves (25) perpendicular to each other are provided, so that the circular plane is divided into four arc-shaped contact surfaces (26) of the same size. . 10. The contact element according to item 1 of the scope of patent application, wherein the contact element (15, 16) is provided with at least one contact surface (26), and the structure of the contact surface (26) is star-shaped, clover-shaped or It is a bell shape. 11 The contact element according to item 1 of the patent application scope, wherein the contact element is basically made of titanium, niobium, tantalum or an alloy between these metals, or an alloy with other metals. 12. The contact element according to item 1 of the patent application, wherein the contact surface (26) is basically made of copper. This paper size is based on Chinese solid family practice (CNS specification (210x297 mm) ^ 24- -------- l · -pack -------- ir ------: 铮 ·. (Please read the note ^^ on the back before filling this page) 469303 B8 C8 D8 l7.23 V Printed by the Shell Consumer Cooperative of the Ministry of Economic Affairs and Intellectual Property of the Ministry of Commerce 6. Application scope of patents 1 m 13_According to item 1 of the scope of patent applications In the above-mentioned contact element, the contact surface (26) is covered with a layer which is electrically conductive, chemically resistant, and composed of gold, copper, silver, street, copper, an alloy of these metals, or a mixed oxide. 14 A contact mechanism, which is basically a plate-shaped object used for feeding when it is electrolytically treated, which has at least one long handle and at least one contact element. The contact element is mounted on the end of a long handle, and the long handle and The contact element can be moved by a restoring force so that the contact element can be pressed on the object. The contact element (15, 16) has one or more contact surfaces (26), and the shape of the contact surface is configured. Is to make a conductive meter pressed against a circuit board material (L) When the contact element (15, 16) on the contact surface has a large current flowing to the conductive surface area adjacent to the contact surface, the conductive surface will not cause damage. 15. According to the scope of the patent application No. 14 Said contact mechanism, wherein the contact element (15, 16) has a contact surface (26) bounded by a boundary line (34), and the shape of this contact surface is constituted in the following manner: all boundary lines The square of the total length L of (34) and the size F 'of all the contact surfaces (26) F' is at least 25. I. The contact mechanism according to item M of the scope of the patent application, wherein at least A contact element (15, 16) is provided with at least two protrusions (24) separated from each other by a compartment (25), each of which has a contact surface (26) 'and the contact surface (26) is basically They are all set in a plane, 赖 t ㈣ ⑽ x 2S7 (Kong Chu)) _ /--! · ——Ν Install ---———— — — Order ------ line f (Please read the back first (Please note this page before filling out this page) -25 469303 A8B8C8D8 90. 7. 23 Supplement. The scope of patent application 'r:; r; The arrangement is such that all contact surfaces (通电 and ^^ α) can form an energized contact between the corresponding thin surfaces. 17 · A kind of basically flat-shaped object is handled as a solution for feeding. It has at least one contact element capable of conducting f on the surface of the object, and therefore the contact element and the object A current is generated between the contact tg pieces (15, 16) having one or more contact surfaces (26), and the shape of the contact surfaces is to allow one to be pressed against a circuit board material (L). The contact elements (15, 16) on the conductive surface of the conductive surface will not cause damage to the conductive surface when a large current flows from the contact surface into the conductive surface area adjacent to the contact surface. 18. The method according to item 17 of the patent application park, wherein the contact element (15, 16) has a contact surface (26) bounded by a boundary line (34), and the shape of the contact surface is It is constituted as follows: the square of the total length L of all the boundary lines (34), and the size F 'of all the contact surfaces (26), the ratio V L1 F of which is at least 25. — I — ^ I -I 1 IIIII Γ. · — Equipment --- (Please read the note on the back before filling in this page) Nickel: The standard for printing private papers printed by employees ’cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs is applicable to China Standard (CNS) A4 is present (21 () χ tear public love) -26