JPS5937672A - Connection device to printed wiring board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Technical field to which the invention pertains] The present invention relates to a connection to a printed wiring board, which comprises a socket mounted on the printed wiring board and a plug that can be inserted into the socket and has a connection part to a conductor. I'm busy wearing fat.

[Prior art and its problems]

Such connection devices are commercially available. In printed circuit boards, it is sometimes necessary to conduct the connecting conductors via fuses. This is the case, for example, when a flammable power transformer is mounted on the printed circuit board 1.

Due to the high voltages of 220 V or 380 V AC, large clearance and creepage distances are required, so a large area is required to mount the heaters on the printed wiring board. Furthermore, since the power supply connections are generally equipped with fuses of 10 to 16 A, the conductor pattern between the connection device and the fuses is not sufficiently maintained. For this reason, fuses in the past were often mounted outside the printed wiring board.

[Purpose of the invention]

The object of the invention is to mount a fuse on a printed circuit board without taking up much space while completely protecting all conductor traces.

[Means for achieving the purpose]

This objective is achieved by the fact that when the plug is inserted, the contacts of the socket head and the plug are separated and that there is a chamber between these contacts into which a fuse is inserted to connect these two contacts. By incorporating the fuse into the chamber of the connecting device, the fuse can be installed without taking up much space. At that time, the air P and R required in the connecting device
The distance and creepage distance must exist anyway.

Since the fuse is placed directly between the connecting conductor and the socket, all elements of the printed circuit board are protected. The fuse can be easily replaced by cleaning, at least after pulling the plug. In this case, the relationship to the printed wiring board becomes clearer than in the case where the fuse is arranged separately from the printed wiring board, and this makes it much easier to investigate a failure.

[Embodiments of the invention]

In one advantageous embodiment, a guide pin and a guide hole are provided on opposite sides of the socket and the plug, respectively, and a snap connection device is provided on the plug and the socket. This simplifies the structure of the socket and plug and facilitates their separation.

The contacts of the socket are configured as a holder for gripping one end of a cylindrical fuse, and the contacts of the plug are configured as a contact plate that bends in the longitudinal direction of the fuse. this(
The heater can then be inserted into the socket before joining the socket and plug. The flexible contact plate provides tolerance compensation for different lengths of the heater.

The plug and socket 1 are constructed in the shape of a flat rectangular parallelepiped with a large number of side-by-side contact points. This makes it easy to assemble the connecting device.

As an alternative to this, a number of IN sockets and plugs can be arranged side by side via side coupling elements.

The connecting elements can thereby be combined for any desired number of plug-in connections.

[Embodiments of the invention]

Next, the present invention will be explained in detail with reference to drawings showing embodiments of a connecting device based on the present invention.

FIG. 1 shows the connecting device in the connected state. A socket 1 is mounted on a printed wiring board 4, for example by soldering. A plug 2 to which a conductive wire 6 is connected is inserted into the socket 1.

FIG. 2 is a cross-sectional view of the separated connection device.

The socket 1 includes a chamber 1f containing a contact 1a.

This contact 1a is configured in the form of a clip and is electrically connected to a pin 1b projecting from the socket l.

The bottle 1b is soldered to the printed wiring board. One end of a fuse 3 is inserted into the clip-shaped contact 1a and held in the socket 1. A guide pin IC is provided on the end surface of the socket 1. A plug 2 is inserted into this socket 1. The plug 2 is provided with a guide hole 2c into which the bottle is inserted, corresponding to the guide pin 1c. For fastening, the upper surface of the plaque 2 is provided with an extension having a snap pawl 2d, which snaps onto the corner 1d of the socket in the plugged-in state.

M2f of the plug 2 together with the chamber 1f of the socket 1 forms a common chamber in which the fuse 3 is accommodated. A contact plate 2a is provided for making an electrical connection with the second 4 parts of the fuse 3, which presses the fuse 3 towards the socket 1 via a spring 2g. The contact plate 2a is electrically conductively connected to a screw terminal 2b into which a conductor 6 can be screwed.

Therefore, in this structure, the conductor 6 is connected to the printed wiring board 4.
It is directly connected to the JIC fuse without going through any conductive patterns. The conductive pattern connected to pin 1bK is already protected by fuse 3. Fuse J can be easily replaced after pulling out plug 2. Since the fuses are well insulated within the chambers If and 2f of the connecting device, the structure of the unitary connecting device is very compact.

The connecting device is chamber 1f containing a suitable fuse 3.

A large number of 2f can be arranged side by side to connect multi-core conductive wires 6. However, the connecting device could also be of modular construction in the form of a plurality of single-pole connecting elements arranged side by side in a row via side connections. This connection is simply constituted, for example, by a pin 5 shown in FIG. 1, which is inserted into a hole (not shown) in the adjacent element.

〔Effect of the invention〕

The connection device according to the invention consists of a socket mounted on a printed wiring board and a plug which can be inserted into the socket and has a connection to a conductor. A chamber is provided in the connecting device, in which a fuse is arranged. The fuse connects the socket contacts and the plug contacts. With such a configuration, the fuse can be easily replaced and installed on the +4+ printed wiring board without taking up much space, while retaining all the conductive patterns on the printed wiring board and maintaining the necessary absolute distances.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of a connection device to a printed wiring board according to the present invention, and FIG.
FIG. 4 is a cross-sectional view of the socket and plug of device f; In the drawing (・C11 is a socket, 2 is a plug, 3 is a fuse, 4 is a printed wiring board, 5 is a coupling element on the side, 6 is conductive, la, 2a are contacts, 1c is a guide pin, 2C is a guide hole,
ld, 2d are snap coupling devices, 1f. 2f is a chamber.

Claims (1)

[Claims] 1) In a connection device to a printed wiring board consisting of a socket mounted on a printed wiring board and a plug that can be inserted into the socket and has a connection part to a conductor, when the plug is inserted, the socket A device for connecting to a printed wiring board, characterized in that the contacts of the plug and the contacts of the plug are separated from each other, and there is a chamber between these contacts into which a fuse is inserted to fully connect both the contacts. 2. The printed wiring board according to claim 1, wherein the socket and the plug have guide pins and guide holes on opposing surfaces, respectively, and a snap coupling device on one of the plugs and the socket. Connection device to. 3) In the device according to claim 1 or 2, the contacts of the socket are configured as a holder that grips one end of the cylindrical fuse, and the contacts of one plug are bent in the longitudinal direction of the fuse. A connection device to a printed wiring board, characterized in that it is configured as a contact plate. 4) A device according to any one of claims 1 to 3, characterized in that the plug and the socket are configured in the shape of a flat rectangular parallelepiped with a large number of horizontally arranged contacts. Connecting device to printed wiring board. 5) A device according to any one of claims 1 to 3, characterized in that a number of single-pole sockets and plugs can be arranged laterally in a row via side coupling elements. Connecting device to printed wiring board.