JP3038484B2 - Contact plating method - Google Patents

Description

The present invention relates to a method for plating a plurality of contacts.

[Prior Art] FIGS. 2 and 3 show a conventional contact plating method.
This will be described with reference to the drawings.

The contact 1 is formed by continuously punching a single strip-shaped metal thin plate using a press machine. These contacts 1 have a connection portion 3 that is electrically connected to a conductive counterpart contact. The connection part 3 has a pair of connection pieces 5. The connection section 3 is connected to the terminal section 9 via the holding section 7. The tip of the terminal portion 9 is connected to one side of the carrier 11 left at the time of punching. In this state, the contact 1 is formed by the hatched portion A in FIG. The part shown is plated with a noble metal such as gold. In the plating process, the connection portion 3 is immersed in a plating solution to perform the plating process continuously. Thereafter, the connecting portion B between the carrier 7 and the terminal portion 3 is cut off to obtain the contact 1 in which the connecting portion 3 is plated.

[Problem to be Solved by the Invention] When the cut surface 6 subjected to press punching is used as a contact surface, the contact 1 requires only a very small portion of the cut surface 6 to be treated with a noble metal plating treatment.

However, such a contact plating method has a problem that a large amount of expensive noble metal is used because plating is performed also on a plate surface portion other than the cut surface 6 of the connection portion 3.

In addition, since the area of the plate surface portion of the connection portion 3 is much larger than the area of the cut surface 6, there is a problem that the cost of this contact plating method is high.

Therefore, an object of the present invention is to provide a plating method for a contact which can be plated only on a portion necessary for connection of the contact.

[Means for Solving the Problems] According to the present invention, a metal sheet is punched out by a press and made, and is connected to a conductive counterpart contact, and is connected to the connection part. A plating method for a contact, comprising plating a cut surface in a thickness direction of a contact including a holding portion, wherein at least the connection portion has the same contour and a guide hole is formed in the holding portion. A plurality of electrical insulating members having the same shape as the connection portion and the guide hole are alternately passed through the guide hole to a rod-shaped support member made of a metal material, and the connection portions are electrically connected to each other in the plate thickness direction. A contact plating method is provided, wherein the cut surface is immersed in a plating solution and plated on the cut surface, while being supported in close contact with each other via an insulating member.

Further, according to the present invention, a contact plate made by punching a thin metal plate by a press and including a connecting portion connected to a conductive counterpart contact and a holding portion connected to the connecting portion. A contact plating method for plating a cut surface in a thickness direction, wherein at least the connecting portion has the same contour, and the holding portion has a guide hole and an inner peripheral edge of the guide hole made of a metal material having elastic force. A plurality of the contacts having a conduction mechanism portion to be brought into contact with the support member, and a plurality of electric insulating members having the same shape as the connection portion and the guide hole are alternately penetrated into the support member by the guide hole. Then, the connecting portions are overlapped and supported in close contact with each other in the plate thickness direction via the electrical insulating member, and the conductive member contacts the supporting member with elastic force. In it are state immersed in the plating solution, plating method of the contact, characterized in that plating processing on the cut surface is obtained.

Embodiment FIG. 1 shows a contact plating method according to an embodiment of the present invention.

FIG. 1 shows an embodiment of a contact plating method. In this embodiment, the same parts as those in FIG.

The contact 1 includes a plurality of contacts 1 having connection portions 3 having the same contour. In each of the plurality of contacts 1, a connection portion 3 having a pair of connection pieces 3 and a terminal portion 9 connected to the connection portion 3 via a holding portion 7 are simultaneously formed into the same contour by punching. At this time, at the time of punching, a guide hole 13 for positioning is formed in the holding portion 7.
Are simultaneously punched and formed.

In this contact plating method, a plate-like contact 1 and an electrical insulating member 15 having the same shape are prepared. Since each of the contacts 1 is subjected to plating only on the cut surface 6 in the plate thickness direction, at least the connection portions 3 are overlapped with each other in the plate thickness direction via the electrical insulating member 15 in close contact with each other. Therefore, the cut surface 6 of each contact 1 is immersed in the plating liquid in an exposed state.

The contact hole 13 is alternately provided between the contact 1 and the electrical insulating member 15.
The contact 1 is plated with a rod-shaped support member 16 made of a metal material, and the cut surface 6 of the contact 1 is exposed, and both ends are clamped and fixed by a jig (not shown) at an appropriate pressure. Is applied.

In this plating method, in particular, in the case of electroplating, a conductive mechanism portion 17 having elasticity is formed on the inner peripheral edge of the guide hole 13 of the contact 1 so that the contacts 1 are electrically connected. Have been. Conduction mechanism part 17
Contacts the support member 16 with elastic force.

When immersed in the plating solution in this state, only the cut surface 6 of the connection piece 5 of the contact 1 is plated. In addition, only the cut surface 6 of the contact 1 is plated, and the plate portion having a large area is not plated.

Further, an electric insulating member 15 is provided between each adjacent contact 1.
After the plating process, the contacts 1 and the electrical insulating member 15 can be easily separated after the plating process, and the plating process can be performed without plating portions being connected to each other and having a good finish.

Further, instead of the conductive mechanism portion 17, a jig configured to press a portion of the cut surface 6 that does not require plating treatment as a guide may be brought into contact with each contact 1 in place of the conductive mechanism portion 17.

[Effects of the Invention] As described above, according to the present invention, plating is not performed on the plate surface portion of the contact, and only the cut surface most necessary for contact can be plated, so that the plating material can be reduced. Thus, an inexpensive contact plating method can be obtained.

In addition, since plating is performed between adjacent contacts via an electrically insulating material, separation is easy, plating portions are not connected to each other, and a plating process with a good finish can be obtained.

Furthermore, in the case of electroplating, since the conductive mechanism portion having elasticity is formed at the inner peripheral edge of the guide hole of the contact so that the contacts are electrically connected, the contact is reliably secured to the support member by the elastic force of the conductive mechanism portion. Can be contacted.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an assembled state before plating in an embodiment of a contact plating method of the present invention, showing a state of plating with an insulating member interposed between the contacts, and FIG. FIG. 3 is a front view showing a state of the contact at the time of plating in a conventional example of a contact plating method, and FIG. 3 is a perspective view showing a contact after the plating in an example of the contact plating method of FIG. . 1; contact, 3; connection part, 5; connection piece, 6; cut surface, 7; holding part, 9; terminal part, 13: guide hole, 15; electric insulating member, 16; support member, 17; conduction mechanism part .

Claims (2)

(57) [Claims] 1. A contact in a thickness direction of a contact which is made by stamping a thin metal plate by a press and includes a connecting portion connected to a conductive counterpart contact and a holding portion connected to the connecting portion. In the method of plating a contact, wherein plating is performed on a cut surface, at least the plurality of contacts having the same contour at the connection portion and having a guide hole formed in the holding portion, and the same as the connection portion and the guide hole. A plurality of electrically insulating members having a shape are alternately penetrated through the guide hole into a rod-shaped support member made of a metal material, and the connection portions are overlapped with each other in the plate thickness direction in close contact with each other via an electrically insulating member. A method of plating a contact, comprising: supporting and immersing the cut surface in a plating solution to perform plating. 2. A contact in a thickness direction of a contact, which is formed by stamping a thin metal plate by a press and includes a connecting portion connected to a conductive mating contact and a holding portion connected to the connecting portion. A plating method for a contact, wherein plating is performed on a cut surface, wherein at least the connection portion has the same contour, and the holding portion has a guide hole and a rod-shaped support member made of a metal material with an elastic force at an inner peripheral edge of the guide hole. A plurality of the contacts formed with a conduction mechanism portion to be brought into contact with, and a plurality of electrical insulating members having the same shape as the connection portion and the guide hole are alternately passed through the support member through the guide hole, A state in which the connecting portions are overlapped and supported in close contact with each other in the plate thickness direction via the electrical insulating member, and the conductive mechanism portion is in contact with the supporting member with elastic force. In immersed in a plating solution, plating method of the contact, characterized in that plating processing on the cut surface.