JPH08307032A - Circuit board device - Google Patents

Abstract

PURPOSE: To make it possible to bring terminals into an electric continuity with one kind of a lead board even if pitches between terminals are different by adjusting the lead board to each of the pitches. CONSTITUTION: This is to bring a terminal 10a of a relay 10 which is installed on an insulating substrate 1 and a terminal 11a of a lead wire 11 into electric continuity through a lead board 3. The lead board 3 has a constant length and has at its both ends burring projections 4, 4. By bending back this lead board 3 in the middle, a distance in a straight line between the burring projections 4 and 4 is adjusted to a distance corresponding to a pitch between the terminals 10a and 11a. Under this conditions, the lead board 3 is installed on the insulating substrate 1 and then the terminals 10a and 11a are inserted into the burring projections 4, 4 and thereby terminals 10a and 11a are brought into electric continuity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit board device having an insulating board provided with a circuit for electrically connecting terminals of an electric component.

[0002]

2. Description of the Related Art In general, a circuit board device incorporated in various electric devices has a pattern wiring made of a metal foil formed on a plate surface of an insulating substrate by etching, and an electric component such as a semiconductor is mounted on the insulating substrate. The terminals of these electric parts are connected to predetermined portions of the pattern wiring.

Since the pattern wiring made of metal foil has a small thickness, a problem of heat generation occurs when a large current flows. Therefore, in addition to a semiconductor or the like, a large current (10 to 15 A) of a relay or the like is further applied to the insulating substrate. When mounting a flowing electric component, a lead plate having a relatively large thickness for passing the large current is attached to an insulating substrate, and the large current is passed using the lead plate. This lead plate is made of a conductive metal plate having a thickness of about 0.3 mm, such as a copper plate or a copper alloy plate, which is formed into a strip plate having a predetermined length by punching with a press.

[0004]

By the way, the pitch between terminals of an electric component mounted on an insulating substrate is often changed, and in this case, a lead plate having a certain length can cope with the change of the pitch. Can not do it.

If various lead plates having different lengths are prepared in advance, it is possible to cope with the situation. However, since the lead plates are formed by punching by a press, various lead plates having different lengths are formed. If a plate is to be formed, various punching dies corresponding to the plate are required, which is costly and reduces economic efficiency.

The present invention has been made by paying attention to such a point, and an object thereof is to connect terminals according to the pitch with a kind of lead plate even if the terminals have different pitches. It is to provide a circuit board device which can be electrically conducted.

[0007]

In order to achieve such an object, the present invention provides a lead plate having a certain length as an invention according to claim 1, and folds the lead plate halfway. By bending and folding back, the linear distance between the end on the one end side and the end on the other end side is adjusted to the distance corresponding to the pitch between the terminals of the electric component, and this lead plate is attached to the insulating substrate. The terminals of the electric component are respectively connected to the end portion on the one end side and the end portion on the other end side to electrically connect the terminals.

According to the second aspect of the invention, a lead plate having a constant length is formed, and burring protrusions are formed at both ends of the lead plate, and the lead plate is bent halfway. By bending and folding back, the linear distance between the burring protrusions is adjusted to the distance corresponding to the pitch between the terminals of the electric component, and this lead plate is attached to the insulating substrate, and the burring protrusions at one end of the burring protrusion and the other end are attached. The terminals of the electric component are inserted into the burring protrusions at the ends of the terminals to electrically connect the terminals.

As a third aspect of the present invention, a lead plate having a constant length is formed, connection holes are formed at both ends of the lead plate, and the lead plate is bent in the middle. Then, by folding back, the linear distance between the both connection holes is adjusted to the distance corresponding to the pitch between the terminals of the electric component,
This lead plate is attached to an insulating substrate, and the terminals of the electric component are inserted into the connection hole at one end and the connection hole at the other end, respectively, to electrically connect the terminals.

Further, as the invention according to claim 4, a lead plate having a constant length is formed, a burring protrusion is formed at one end of the lead plate, and a connection hole is formed at the other end.
By bending and folding the lead plate in the middle, the linear distance between the burring protrusion and the connection hole is adjusted to the distance corresponding to the pitch between the terminals of the electric component, and the lead plate is attached to the insulating substrate. The terminals of the electric component are respectively inserted into the burring protrusions at the one end and the connection holes at the other end to electrically connect the terminals.

[0011]

According to the first aspect of the invention, the lead plate has a fixed length, and the lead plate is selected by selecting the position of the bent portion when the lead plate is bent in the middle and folded back. The linear distance between both ends of the plate after bending can be set arbitrarily, and therefore, even if the pitch between the terminals of the electrical component is different, a type of lead plate is used to provide a gap between the ends. By matching the linear distance to the pitch between the terminals and connecting the terminals of the electric component to both ends of the lead plate respectively, it becomes possible to electrically connect the terminals.

According to the second aspect of the present invention, the lead plate has a fixed length, but by selecting the position of the bent portion when the lead plate is bent in the middle and folded back, The straight line distance between the burring protrusions after bending the plate can be set arbitrarily, so even if the pitch between the terminals of the electrical component is different, a type of lead plate is used between the burring protrusions. It is possible to establish electrical continuity between the terminals by inserting the terminals of the electric component into both burring protrusions of the lead plate by adjusting the linear distance of the above to the pitch between the terminals.

According to the third aspect of the present invention, the lead plate has a fixed length, but by selecting the position of the bent portion when the lead plate is bent in the middle and folded back, The linear distance between the connection holes after bending the plate can be set arbitrarily, so even if the pitch between the terminals of the electrical component is different, use a kind of lead plate to It is possible to electrically connect between the terminals by adjusting the linear distance of the above to the pitch between the terminals and inserting the terminals of the electric component into the both connection holes of the lead plate.

According to the invention described in claim 4, the lead plate has a fixed length, but by selecting the position of the bent portion when the lead plate is bent in the middle and folded back, The straight line distance between the burring protrusion and the connection hole after bending the plate can be set arbitrarily, so even if the pitch between the terminals of the electric component is different, a kind of lead plate is used. The linear distance between the burring protrusion and the connection hole is adjusted to the pitch between the terminals, and the terminals of the electrical component are inserted into the burring protrusion and the connection hole of the lead plate to electrically connect the terminals. It becomes possible to conduct electricity.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show a first embodiment, in which reference numeral 1 is an insulating substrate, and a lower surface of the insulating substrate 1 is formed by etching a copper foil having a thickness of several tens of μm (for example, 35 μm). Pattern wirings 2 ... Formed in a predetermined shape are provided.

Lead plates 3 and 3 for passing a large current are attached to the upper surface of the insulating substrate 1.
3 is formed by punching a conductive metal plate such as a copper plate or a copper alloy plate having a thickness of 0.3 mm into a strip plate shape having a certain length. The lead plates 3 and 3 are mounted on the insulating substrate 1 in a state where the lead plates 3 and 3 are bent and folded back.

At both ends of the lead plates 3 and 3,
As shown in FIG. 2, the burring protrusions 4 and 4 are integrally formed so as to project, and the peripheral surfaces of the burring protrusions 4 and 4 are cut into a plurality of divided pieces 5.

A plurality of mounting holes 6 ... Corresponding to the burring protrusions 4 of the lead plates 3 and 3 are formed in the insulating substrate 1, and the lead plate 3 is formed in the mounting holes 6 from the upper surface side of the insulating substrate 1. , 3 of the burring protrusions 4 ... Are inserted, and the tips of the divided pieces 5 of the burring protrusions 4 are bent outward and crimped, whereby the lead plates 3 and 3 are placed on the insulating substrate 1. It is fixed. Further, the insulating substrate 1 is provided with mounting holes 7, 7 which penetrate from the upper surface to the end portions of the pattern wirings 2 ...

A relay 10 as an electric component is arranged on the insulating substrate 1, and a plurality of pin-shaped terminals 10a, 10b, 10c and 10d are provided on the lower surface of the relay 10.

The terminals 10a, 10 of the relay 10 are
b is inserted into the burring protrusions 4 and 4 on one end side of the lead plates 3 and 3 from the upper surface side of the insulating substrate 1, whereby the terminals 10a and 10b and the lead plates 3 and 3 are electrically connected, and The terminals 10c and 10d are inserted into the mounting holes 7 and 7 of the insulating substrate 1, whereby the terminals 10c and 1d are inserted.
0d and the pattern wirings 2 and 2 are electrically connected.

Further, a pair of lead wires 11 and 12 are arranged on the insulating substrate 1 as electric parts, and pin-shaped terminals 11a and 12a are provided at the ends of the lead wires 11 and 12.
Are attached to the terminals 11 of these lead wires 11 and 12.
a and 12a are from the upper surface side of the insulating substrate 1 to the lead plate 3,
3 is inserted into the burring protrusions 4 and 4 on the other end side, whereby the terminals 11a and 12a and the lead plates 3 and 3 are electrically connected. And the lead wire 11,
A large current flows from the terminals 11a and 12a of 12 through the lead plates 3 and 3 to the terminals 10a and 10b of the relay 10.

The terminals 10a and 10b of the relay 10 and the burring protrusions 4 and 4 on one end side of the lead plates 3 and 3, the terminals 10c and 10d of the relay 10 and the pattern wirings 2 and 2, and the terminals of the lead wires 11 and 12 are provided. 11a and 12a and the burring protrusions 4 and 4 on the other end side of the lead plates 3 and 3 are soldered and joined from the lower surface side of the insulating substrate 1.

In FIG. 3, terminals 10a and 10b of a relay 10 and lead wires 11 connected via lead plates 3 and 3 are connected.
12 shows the dimensions of the pitch between the terminals 11a and 12a of the relay 12, the pitch between the terminal 10a of the relay 10 and the terminal 11a of the lead wire 11 is P1, and the terminal 10b of the relay 10 is shown.
The pitch between the lead wire 12 and the terminal 12a of the lead wire 12 is P2.

FIGS. 4 and 5 show a plan view and a side view of the lead plate 3 that has been punched, and the lead plate 3 is in the form of a strip plate that is long in one direction, and the length thereof is as described above. The size is sufficiently larger than the interval between the pitches P1 and P2. The burring protrusion 4 at one end of the lead plate 3 projects to one plate surface side of the lead plate 3, and the burring protrusion 4 at the other end of the lead plate 3 projects to the other plate surface side of the lead plate 3. ing.

When attaching the lead plate 3 to the insulating substrate 1, as shown in FIG. 6, the lead plate 3 is bent in the middle between one end side and the other end side, and the bent portion By folding back the part extending over the end side, one burring protrusion 4
The linear distance L between the burring protrusion 4 and the other burring protrusion 4 is adjusted to the pitch P1 or P2. By bending and folding the lead plate 3 in the middle, the burring protrusions 4 and 4 protruding toward the opposite sides are directed in the same direction.

The linear distance L between the burring protrusions 4 and 4 is
It can be arbitrarily determined by selecting the bending position of the lead plate 3. FIG. 7 shows an example in which the bending position of the lead plate 3 is variously selected and the linear distance between the burring protrusions 4 and 4 is set to various dimensions. In the state of FIG. The linear distance between the burring protrusions 4 and 4 is L1, the linear distance between the burring protrusions 4 and 4 is L2 in the state of FIG. 7B, and the linear distance between the burring protrusions 4 and 4 is the state of FIG. 7C. In the state of L3 and FIG. 7D, the linear distance between the burring protrusions 4 and 4 is L4, and the relationship of L1 <L2 <L3 <L4 is generated.

The lead bar 3 is bent in the middle to match the straight line distance L between the burring protrusions 4 and 4 with the pitch P1, and the other lead plate 3 is bent in the middle to produce the burring protrusion 4. , 4 the linear distance L between them is adjusted to the pitch P2, and then each lead plate 3 is placed on the insulating substrate 1,
The predetermined burring protrusions 4 ... Are inserted into the predetermined mounting holes 6, respectively, and the tip ends of the divided pieces 5 of the respective burring protrusions 4 ... Fixed to.

After mounting the lead plates 3 and 3 on the insulating substrate 1, the terminals 10a and 10b of the relay 10 are connected to the burring protrusions 4 on one end side of the lead plates 3 and 3.
4, the relay 10 is attached to the insulating substrate 1, and the terminals 11a and 12 of the lead wires 11 and 12 are further inserted into the burring protrusions 4 and 4 on the other end side of the lead plates 3 and 3, respectively.
a and insert the lead wires 11 and 12 into the insulating substrate 1 respectively.
Attach to

As described above, the lead plate 3 has a fixed length, but by bending the lead plate 3 in the middle and folding it back, the linear distance between the burring protrusions 4, 4 can be arbitrarily determined. Therefore, the terminals 10a and 10b of the relay 10 and the terminals 11a and 1 of the lead wires 11 and 12 are formed.
Even if the pitch dimension between 2a is changed, it can be dealt with by using a kind of lead plate 3, and it is not necessary to prepare a lead plate for each pitch. Therefore, it is sufficient to provide a kind of die as a die for punching the lead plate 3, so that the manufacturing cost is reduced and the economical efficiency is improved.

8 to 10 show a second embodiment. In this second embodiment, both ends of the lead plate 3 are replaced by the burring protrusions in the first embodiment, and Connection holes 14, 14 are formed by punching the plate surface in a circular shape.

In this case, the lead plate 3 is bent in the middle and folded back so that the linear distance between the connection holes 14, 14 is, for example, the terminal 10a of the relay 10 and the terminal 11 of the lead wire 11.
Then, the lead plate 3 is arranged on the insulating substrate 1 so that the connection holes 14 and 14 are oppositely aligned with the mounting holes 6 and 6. Under this condition, the terminal 10a of the relay 10 is inserted into the connection hole 14 on one end side of the lead plate 3 and the mounting hole 6 opposed to the terminal 10a from the upper surface side of the insulating substrate 1, and the terminal 11a of the lead wire 11 is attached. The lead plate 3 is inserted into the connection hole 14 on the other end side and into the mounting hole 6 facing the connection hole 14 to electrically connect the terminal 10a of the relay 10 and the terminal 11a of the lead wire 11 to each other through the lead plate 3. Let Then, the terminal 10a of the relay 10, the connection hole 14 on one end side of the lead plate 3, and the terminal 11a of the lead wire 11
And the connection hole 14 on the other end side of the lead plate 3 are soldered and joined from the lower surface side of the insulating substrate 1.

The present invention can be implemented by using the lead plate 3 having a different structure. For example, in FIG.
As shown in FIG. 12 and FIG. 12, a burring protrusion 4 is formed on one end of the lead plate 3, and a connection hole 14 is formed on the other end by punching, and the lead plate 3 is bent halfway. Then, the linear distance between the burring protrusion 4 and the connection hole 14 is adjusted to the distance corresponding to the pitch between the terminals of the electric component such as the relay and the lead wire by folding back the lead plate 3 as an insulating substrate. Mounting, in the burring protrusion 4 at one end and in the connection hole 1 at the other end
The terminals of the electric component are inserted into the respective parts 4 to electrically connect the terminals.

Alternatively, as shown in FIGS. 13 and 14, burring protrusions 4 and 4 are formed at both ends of the lead plate 3, and burring protrusions 4a are further formed in the middle thereof. By bending and folding the lead plate 3, the linear distance between the burring protrusions 4 and 4 at both ends of the lead plate 3 is adjusted to the distance corresponding to the pitch between terminals of electric parts such as relays and lead wires. 3 is attached to an insulating substrate, the terminals of the electric component are inserted into the burring protrusions 4 and 4 at both ends of the insulating substrate, and the terminals of other electric components are further inserted into the burring protrusions 4a in the intermediate portion. Make the terminals electrically conductive.

Further, as shown in FIG. 15 and FIG. 16, the connection holes 1 are formed by punching at both ends of the lead plate 3.
4, 14 and the same connecting hole 14a is formed by punching in the middle thereof, and the lead plate 3 is bent and folded back in the middle thereof, so that the connecting holes 14 at both ends of the lead plate 3, The linear distance between 14 is adjusted to the distance corresponding to the pitch between terminals of electric parts such as relays and lead wires, and this lead plate 3 is attached to an insulating substrate. The terminals of the parts are respectively inserted, and the terminals of the other electric parts are further inserted into the connection holes 14a in the middle part to electrically connect the terminals.

[0035]

As described above, according to the present invention,
Even if the pitch between the terminals is different, it is possible to electrically connect the terminals by using a kind of lead plate and make them conductive, so that there is no need for a lead plate corresponding to each pitch between the terminals. , Economic efficiency is surely improved.

[Brief description of drawings]

FIG. 1 is a bottom view of a circuit board device according to a first embodiment of the present invention.

FIG. 2 is a side view of the main part of the circuit board device in a disassembled state.

FIG. 3 is a bottom view showing the size of the pitch between terminals in the circuit board device.

FIG. 4 is a plan view showing a lead plate before bending in the circuit board device.

FIG. 5 is a side view of the lead plate.

FIG. 6 is a plan view showing a state in which the lead plate is bent in the middle and folded back.

FIG. 7 is a plan view showing an example of a bent form of the lead plate.

FIG. 8 is a side view showing an exploded main part of a circuit board device according to a second embodiment of the present invention.

FIG. 9 is a plan view showing a lead plate before bending in the circuit board device.

FIG. 10 is a side view of the lead plate.

FIG. 11 is a plan view showing a modified example of the lead plate.

FIG. 12 is a side view of the lead plate.

FIG. 13 is a plan view showing another modification of the lead plate.

FIG. 14 is a side view of the lead plate.

FIG. 15 is a plan view showing still another modification of the lead plate.

FIG. 16 is a side view of the lead plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Insulating substrate 3 ... Lead plate 4, 4a ... Burring protrusion 10 ... Relay (electrical part) 10a, 10b, 10c, 10d ... Terminal 11, 12 ... Lead wire (electrical part) 11a, 12a ... Terminal 14, 14a ... Connection Hole

Claims (4)

[Claims] 1. A circuit board device in which terminals of an electric component mounted on an insulating substrate are electrically connected to each other through a lead plate made of a conductive metal plate, wherein the lead plate has a constant length. Then, by bending and folding the lead plate in the middle, the linear distance between the end on the one end side and the end on the other end side is adjusted to the distance corresponding to the pitch between the terminals of the electric component, A circuit board device characterized in that the lead plate is attached to an insulating substrate, and the terminals are respectively connected to one end and the other end of the lead plate to electrically connect the terminals. 2. A circuit board device in which terminals of an electric component mounted on an insulating substrate are electrically connected to each other through a lead plate made of a conductive metal plate, wherein the lead plate has a constant length. Further, burring protrusions are formed at both ends of the burring protrusion. This lead plate is attached to the insulating substrate according to the distance corresponding to the pitch, and the terminals are inserted into the burring protrusions at one end and the burring protrusions at the other end, respectively, to electrically connect the terminals. A circuit board device characterized by being electrically connected. 3. A circuit board device in which terminals of an electric component mounted on an insulating substrate are electrically connected to each other through a lead plate made of a conductive metal plate, wherein the lead plate has a constant length. In addition, connection holes are formed at the end portions on both ends thereof, and by bending and folding the lead plate in the middle, the linear distance between the connection holes can be set to a value between terminals of the electric component. This lead plate is attached to an insulating substrate according to the distance corresponding to the pitch, and the terminals are inserted into the connection holes at one end and the connection holes at the other end, respectively, and the terminals are electrically connected to each other. A circuit board device characterized by being electrically connected. 4. A circuit board device in which terminals of an electric component mounted on an insulating substrate are electrically connected to each other via a lead plate made of a conductive metal plate, wherein the lead plate has a constant length. Further, a burring protrusion is formed at one end of the burring protrusion, and a connection hole is formed at the other end of the burring protrusion. Straight line distance,
The lead plate is attached to an insulating substrate according to the distance corresponding to the pitch between the terminals of the electric component, and the terminals are inserted into the burring protrusions at one end and the connection holes at the other end, respectively. A circuit board device characterized in that the terminals are electrically connected.