JPS6041744Y2 - Circuit board for leadless electronic components - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a circuit board for leadless electronic components on which leadless electronic components are inserted and arranged for electrical connection.

In general, leadless electronic components have connection terminals instead of lead wires on the main body of the component, which consists of elements such as capacitors and resistors.The connection terminals are used to connect printed circuit board wiring. It enables electrical connection to conductors (patterns).

When such electronic components are mounted on a printed circuit board, they are inserted into insertion holes formed in the printed circuit board in advance, placed, and then soldered.

When this type of soldering goes through a process, it is easy to carry in and place electronic components before connection, and the component body can be securely latched onto the board. In order to improve work efficiency and connection reliability, it is necessary to prevent the device from falling or being displaced.

In addition, when many such electronic components are used, the reliability of the electronic device is affected by forming many insertion holes on the printed circuit board and reducing its mechanical strength due to the demand for miniaturization. When connecting, it is necessary to integrate the printed circuit board and electronic components.

Therefore, this idea not only makes it easier to insert the board into the insertion hole, but also ensures a secure locking state before connection, and after connection, integrates it with the electronic components to prevent a decrease in mechanical strength. The purpose is to

That is, this invention forms a support step for supporting the leadless electronic component on the opposing inner wall surface of an insertion hole formed in the board according to the leadless electronic component, and a supporting step part for supporting the leadless electronic component is formed in the peripheral part of the insertion hole. A wiring conductor piece consisting of a part of the selectively arranged wiring conductor is arranged inside the insertion hole to face the support step part in a separated state, and as the leadless electronic component is inserted, the wiring conductor piece is A wiring conductor piece is deformed along the leadless terminal component and the support step, and the elasticity of the wiring conductor piece allows the leadless electronic component to be held in the insertion hole and electrically connected to the wiring conductor piece. This is what I did.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 1 shows an embodiment of the circuit board for leadless electronic components of this invention.

In FIG. 1, a substrate 2 is made of insulating synthetic resin such as Bakelite, and has a rectangular insertion hole 6 into which a leadless electronic component 4 such as a leadless capacitor is inserted. formed according to part 4,
Support step portions 8A and 8 having horizontal support surfaces on which the leadless electronic component 4 is supported are provided on opposing inner wall surfaces of the insertion hole 6.
B is formed.

On the surface of the substrate 2, wiring conductors 10A and IOB are selectively disposed on opposing edges around the insertion hole 6, and a wiring conductor piece 1 formed of a part of the wiring conductor 10A and IOB
2A and 12B are arranged on the upper surface of the support step portions 8A and 8B of the insertion hole 6 so as to face the inside of the insertion hole 6 so as to be bendable and separate from the support step portions 8A and 8B.

The component body 14 of the leadless electronic component 4 is covered with a case made of insulating synthetic resin, etc.
Connecting terminal portions 16A and 16B are formed at both ends.

With the above configuration, as shown in FIG. 2, when the leadless electronic component 4 is inserted into the insertion hole 6 in the direction of the arrow,
As shown in FIG. 3, the wiring conductor pieces 12A, 12B are deformed along the leadless electronic component 4 and the support steps 8A, 8B.

As a result, the connection terminal portion 16A of the leadless electronic component 4
, 16B contact the wiring conductor pieces 12A, 12B, and the leadless electronic component 4 is held inside the insertion hole 6 by the elasticity of the bent wiring conductor pieces 12A, 12B, and the soldering is performed during the previous transfer. This prevents it from falling off or being displaced due to vibration, etc.

In addition, by performing soldering in such a gripping state, the board 2 and the leadless electronic component 4 can be integrated, and the reliability of the connection can be improved.
It is also possible to prevent a decrease in the mechanical strength of the substrate 2.

Moreover, during wiring, the leadless electronic component 4 can be inserted into the insertion hole 6 of the board 2 extremely easily, and there is no need to worry about positioning for electrical contact. It is also possible to install 4.

Moreover, as shown by the broken line in FIG. 4, if an insertion hole 6 that matches the shape of the leadless electronic component 4' is formed and inserted,
By firmly gripping the wiring conductor pieces 12A and 12B, it is possible not only to prevent them from falling off or being displaced before connection, but also to improve the reliability of the connection by soldering and to prevent a decrease in the strength of the board 2.

In the embodiments, the shape of the leadless electronic component is a rectangular parallelepiped or a cylinder, but the present invention can be applied to electronic components of various shapes such as a cube and a disc.

As explained above, according to the present invention, leadless electronic components can be easily inserted and arranged on the board, making wiring work more efficient, and since they are securely held and fixed before connection, they will not fall during transportation. It is possible to prevent wires and displacements, streamline handling before connection, and integrate leadless electronic components and the board, improving connection reliability and preventing a decrease in the mechanical strength of the board.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram showing an embodiment of the circuit board for leadless electronic components of this invention, Figure 2 is an explanatory diagram showing the insertion of leadless electronic components into the board, and Figure 3 is an explanatory diagram showing the installation of leadless electronic components. FIG. 4 is a sectional view showing another embodiment of the circuit board for leadless electronic components of this invention. 2... Board, 4, 4'... Leadless electronic component, 6... Insertion hole, 8A, 8B...
...Support step, IOA, IOB...Wiring conductor,
12A, 12B...Wiring conductor pieces.

Claims (1)

[Scope of utility model registration request] An insertion hole formed in the board according to the leadless electronic component is formed with a support step portion supporting the leadless electronic component on an opposing inner wall surface thereof, and the supporting step portion is selectively disposed around the insertion hole. A wiring conductor piece made of a part of the leadless electronic component is arranged to face the inside of the insertion hole and face the supporting step part in a separated state, and as the leadless electronic component is inserted, the wiring conductor piece is connected to the lead. The leadless electronic component is deformed along the support step, and the elasticity of the wiring conductor piece allows the leadless electronic component to be held in the insertion hole and electrically connected to the wiring conductor piece. Circuit board for leadless electronic components.