JP2006047164A - Clip member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clip member, through which a large current such as 50 to 150 A passes, which has high wear resistance even when a part in contact with an electrode rubs repeatedly. <P>SOLUTION: The clip member holding the electrode therebetween is provided with an oil holding part on its electrode contact part. The oil holding part is covered with a metal plate provided with through holes allowing oil to ooze out. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a clip member that can be attached to and detached from an electrode of a clip connector or a clip type probe, and more particularly, to a high current power supply electrode clip member that can be used without any trouble even when a large current flows through the electrode.

  In recent years, in the automobile industry, the digitization of various functions of vehicles has progressed remarkably. For example, the core power source of energy mounted on a hybrid vehicle is equipped with a power source that carries an unprecedented large current of 50 to 80 A.

  When a current of about 5 A flows through the electrode corresponding to the primary power source, a thin metal connector corresponding to the electric capacity can be used as a probe without any trouble.

  The shape of the electrode through which the large current flows is plate-shaped, and an electrode having a thickness of 0.6 to 1.0 mm or the like is used, and the energy flows through a large current of 50 to 80 A. Since it is difficult to apply to a clip member of a connector, development of a clip member having a function that has not been conventionally required is strongly demanded.

  The outer periphery of a conventional clip-type probe or connector is gold-plated, but if a large current flows, the contact portion of the clip member with the electrode is rubbed and peeled off, resulting in a decrease in measurement reliability. there were. In addition, when a large current of 50 to 80 A flows, even if the electrode in contact with the clip member has minute irregularities, a spark phenomenon appears in the irregularities, and the probe or connector and the counterpart electrode may become unusable. There was a problem that occurred.

  Surface contact that is as good as possible is required for the production of clip connectors and clip-type probes that catch the work on the power supply side (contact portion with the electrode).

  The conventional general idea is to try to solve this problem by increasing the clip pressure. However, since the increase in clip pressure and the sliding of the clip conflict, This causes a galling phenomenon of the members on both the clips. This galling portion appears everywhere, and a large current flows through the bulging portion of the galling, causing a spark phenomenon, which breaks both the electrode and the clip side, making it unusable. Previously, it was unusable at a desorption frequency of about 2,000.

  The present invention is intended to solve such a problem, and is a clip member through which a large current of 50 to 150 A flows, and is excellent in wear resistance even if the contact portion with the electrode is repeatedly rubbed. An object is to provide a clip member.

  In order to achieve the above object, the present inventor has conceived that a clip member having excellent wear resistance can be obtained by attaching oil to a contact portion with an electrode as a result of intensive studies. However, since the durability is insufficient by simply attaching oil, a thin metal plate in which an oil holding portion is formed in the electrode contact portion of the clip member and a through hole through which the oil oozes is formed. It has been found that by covering with a wear-resistant member having excellent durability, the present invention has been achieved.

  That is, according to the present invention, in a clip member that sandwiches an electrode oppositely, an oil holding portion is formed at an electrode contact portion of the clip member, and the oil holding portion is covered with a thin metal plate in which a through hole from which oil oozes is formed. It is characterized by that.

  In short, the present invention is that the wear resistance of the clip member is drastically improved by the oil in the oil holding part constantly oozing out from the through-hole when the thin metal plate slightly moves up and down due to vibration or the like. It is a summary.

  The clip member of the present invention is particularly suitable as a clip member for a probe or a connector (claim 2).

  It is preferable that a concave portion is formed in the electrode contact portion of the clip member, a member holding oil in the concave portion is attached to form the oil holding portion, and the upper surface thereof is covered with the metal plate.

  The member holding oil is preferably a metal foil or metal powder holding oil (claim 4).

  An insulating material may be interposed between the opposing clamping members, and one clamping member may be formed as a Kelvin probe that captures current and the other clamping member as voltage.

  The opposing clamping members may be formed in a clip shape with a metal plate having springiness and low conductivity, in particular, a metal plate made of beryllium copper (Claims 6 and 7).

  The metal plate is preferably a gold or gold alloy thin plate. The thickness of the thin metal plate is preferably 40 μm to 300 μm.

  The electrode is preferably used when a large current of 10 A or more, preferably 50 A to 150 A flows.

  As described above, according to the present invention, it is a clip member through which a large current of 50 to 150 A flows, and even if the contact portion with the electrode is rubbed, the oil always oozes out, so that it is difficult to wear and galling does not occur. Therefore, it has a tremendous effect that electrical resistance can be increased and a spark phenomenon can be avoided.

  1 to 3 show an embodiment of the present invention, in which an upper clamping member 2 and a lower clamping member formed on curved surfaces 1 and 1 'projecting contact surfaces with work electrodes (not shown). An example in which 2 ′ and an insulating material 3 sandwiched by the contact portions 1 and 1 ′ of both sandwiching members 2 and 2 ′ are provided is shown. An electrode through which a large current flows is detachably clamped between the contact portions 1 and 1 ′ of both the clamping members 2 and 2 ′.

  The upper clamping member 2 and the lower clamping member 2 'are made of a metal (preferably beryllium copper) having springiness and low conductivity, and pressing the curved surface 1 or 1' with a press to form the recess 5. The recess 5 is preferably filled with 10 to 20 gold foils 6 under pressure. As the gold foil used in the present invention, it is preferable to use a gold foil immediately before becoming a complete gold foil generated in the process of producing the gold foil.

  Other metal foils may be used instead of the gold foil. In addition, the oil holding portion may be formed so that the oil oozes out of one or both of the upper holding member 2 and the lower holding member 2 ′.

  In this state, the upper clamping member 2 and / or the lower clamping member 2 ′ filled with the gold foil are immersed in oil, removed from the oil, and excess oil is removed by centrifugation.

  Metal powder can be used in place of the metal foil. In this case, it is only necessary to fill the recess with metal powder immersed in oil, and there is no need for centrifugation.

  Then, a metal thin plate 4 (preferably a gold thin plate) having a large number of small holes (preferably holes having a diameter of 50 to 100 microns) 7 is fixed by spot welding so as to cover the concave portion.

  The thickness of the metal thin plate 4 used in the present invention is preferably 40 μ to 300 μ, particularly preferably 100 to 200 μ. The gold thin plate 4 used in the present invention may be pure gold or a gold alloy such as 14K or 24K. However, it is particularly preferable to use a gold alloy that hardly wears.

  In the above embodiment, a large number of through holes are formed as the holes 7 through which oil oozes out, but these may be linear through holes or spiral through holes, and oil ooze out holes. If it is, it will not specifically limit.

  When a high-current work electrode is clipped using the clip member of the present invention, when the sliding reaches the top, the clip side is attached to the surface of the clip through a hole with an oil component such as a metal foil having a diameter of 50 to 100 microns. It oozes out in a minute amount and smoothly slides between the clip side and the workpiece side.

  In addition, microscopic convex portions scattered on both sides are removed in the process of repeated sliding work, so that even better sliding work is repeated, and the electrical resistance is reduced by removing both irregularities. As a result, the heat generation was less than our design (about 60 ° C).

  In the above test, the 60A clip member was used, but the upper and lower clamping members were made of beryllium copper with a material thickness of 0.8 mm and a material width of 11 mm.

  In addition, although sliding was performed 30,000 times, there was no significant wear on the clip side and electrode work side, and remarkable results were obtained compared to no oil (cannot be used after 2,000 times).

It is a perspective view which shows one Example of this invention. It is a side view which shows one Example of this invention. It is sectional drawing which shows one Example of the clamping member which comprises the clip member of this invention. It is the (A) top view and (B) sectional view showing other examples of the clamping member which constitutes the clip member of the present invention.

Explanation of symbols

1, 1 '··········· Contact surface 2, 2' ·············································································
5 .......... Concavity formed in the contact part of the clamping member 6 .......... Gold leaf 7 ....... Hole from which oil oozes

Claims (10)

In the clip member that sandwiches the electrodes facing each other, an oil holding portion is formed in the electrode contact portion of the clip member, and the oil holding portion is covered with a thin metal plate in which a through hole through which oil oozes is formed. Clip member to be used. The clip member according to claim 1, wherein the clip member is a clip member of a probe or a connector. The concave part is formed in the electrode contact part of the said clip member, The member which made oil hold | maintain oil in this concave part is mounted | worn, an oil holding part is formed, The upper surface is covered with the said metal plate. Clip member. The clip member according to any one of claims 1 to 3, wherein the member holding oil is a metal foil or metal powder holding oil. An insulating material is interposed between the opposing clamping members, and one clamping member is formed in a Kelvin probe that captures current and the other clamping member is voltage. The clip member as described. The clip member according to any one of claims 1 to 5, wherein the opposing holding member is configured in a clip shape with a metal plate having spring properties and low conductivity. The clip member according to claim 6, wherein the opposing holding members are made of beryllium copper. The clip member according to claim 1, wherein the metal plate is a gold or gold alloy thin plate. The clip member according to claim 1, wherein the thin metal plate has a thickness of 40 μm to 300 μm. The clip member according to any one of claims 1 to 9, wherein a large current of 10 A or more flows through the electrode.

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