JP2003218477A - Circuit board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circuit board which can be installed at desirable dimen sion accuracy in a simple step, in the circuit board installed in a VTR, etc., provided with a connection part, etc., for electrically connecting an operating key or an external unit. <P>SOLUTION: A circuit board contains a division part which can divide (clip) a small part from the circuit board, and after divided from the division part, the small part is bent at a desirable position (the small part is raised at a certain angle with respect to the circuit board). A jumper for connecting electrically and/or mechanically the circuit board with the small part is provided. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit board, and more particularly to a bendable circuit board installed in a housing or the like.

[0002]

2. Description of the Related Art Usually, when a main board such as a VTR and a front operation board are connected to each other and installed in a housing, the main board is placed in parallel with a mechanical parts board such as a deck with its parts face up. Located on the lower side of the mechanical component board, the front operation board is VT
Since the operation is performed from the front side of the R, the operation key is attached so as to face the front side. That is, after the components are mounted on the respective boards and soldered, the front operation board is mounted on the main board with the surface of the parts facing upward with an angle of about 90 ° between the parts faces on the operation key mounting side. Is connected to the main board electrically and structurally with the connector facing the front, and then installed in the housing. It is general that the main board and the front operation board are separately mounted and soldered with components and connected to each other by a connector before being installed in a housing.

In addition to this, when the main board has a large area, the front operation board portion may be divided from a part of the main board to be manufactured. In this case, component mounting and soldering are performed at the same time, but when a low-priced direct-mounting type connector is used, additional soldering work of the connector part is performed after connecting the boards.

As a conventional technique concerning the above-mentioned substrate division,
There is one disclosed in Japanese Patent Laid-Open No. 11-177187. In this conventional technique shown in FIG. 7, the substrate material 1
01 is the first substrate 101 on which the electronic component 104 is mounted.
The first substrate 101a and the second substrate 101b are partitioned by the thin notch groove 102. Where notch groove 1
The breaking connection portion 103 is provided in a part of 02,
The first substrate 1 until the substrate material 101 is bent
01a and the second substrate 101b are integrally connected. In addition, the projections 10 are provided on both ends of the breaking connection portion 103.
5 is integrally projected. Furthermore, the notch groove 10
The first substrate 101a and the second substrate 101b are sandwiched between the two substrates.
A jumper wire 106 (without using a connector) is installed to connect with and.

With the above structure, when the soldering surfaces are bent at an angle of about 90 ° after the board is divided, the protrusions 1
05 is the notch groove 102 of the second substrate 101b.
As shown in FIG. 8, the side surface of the first substrate 101a is bent so that the side surface of the first substrate 101a rides on the end surface of the second substrate 101b. Can be processed with.

[0006]

However, first of all, in the general prior art of board connection using a connector, it is necessary to bother to insert the connectors for connection, and in the type of the connector to be directly attached, However, it requires a separate soldering work after the substrate is divided, which is a troublesome process work. Alternatively, the cost of using the connector is high, which is disadvantageous in terms of unit price.

Further, in the prior art relating to the substrate division described in JP-A-11-177187, the cutout groove 10 is used.
2 The board area around is small, or the jumper wire 10
When the number of 6 is large, the projection 105 is formed on the substrate material 101.
Cannot be provided. Also, the solder sides are about 90
It is good to fold it at an angle of °, but if you fold it other than that, you will end up in an unintended situation. For example, in the case where the component surfaces are bent and fixed at an angle of about 90 °, and when the jumper wire 106 is bent in a slacking direction, the distance between the boards is widened and the positioning after the bending becomes unstable. There is a problem that it will happen.

In other words, in this method, the jumper wire 106 is used as a connection method instead of the connector, but the purpose is to make a constant bending state when the board is divided and then bent. Since the shape, size, and bending direction of the board are limited, for example,
When used to connect a main board such as a VTR and a front operation board, the operation keys are located on the part surface, so that the part surfaces are bent and fixed at an angle of approximately 90 °. It lacked versatility and applicability.

Further, a sub-board (operated from the outside,
Alternatively, when connecting a board on which components for connection are mounted) to the main board using the jumper wire 106, the sub-board board is generally arranged at an end portion on the main board. Therefore, the main substrate and the sub-board are connected in an unstable state, and it is difficult to position the main board and the sub-board.

Therefore, the present invention provides a circuit board which has flexibility in the physical movement between the boards and can be easily worked in any of the board dividing, bending and positioning. The purpose is to provide.

[0011]

In order to achieve the above-mentioned object, a circuit board according to the present invention is a circuit board in which electric and electronic parts are mounted and which is installed in a housing of a device. A dividing portion formed by partially breaking the circuit board along a dividing line to divide the small portion facing one side of the circuit board; and the circuit board other than the small portion when dividing And a connecting means for electrically and / or mechanically connecting the cut small portion and arranged across one side of the small portion.

Further, the small portion is arranged in the vicinity of another side different from the one side of the circuit board, and a region of the circuit board sandwiched between the other side and the small portion is It may be characterized in that it serves as a connection space in which the connection means is arranged.

Further, a positioning means used for positioning with respect to the housing and a fixing means used for fixing with the housing may be further provided.

The connecting means may be a jumper wire.

Further, an operation key for operating the device may be formed on the small portion.

Further, the small portion may be formed with an external connection means for making an electrical connection with the outside of the device.

The circuit board may be a single-sided board having a copper foil on only one side.

The circuit board may be a double-sided board or a multi-layer board.

Further, the connecting means may be a lead portion of an electric / electronic component.

Further, the circuit board may include a region of the dummy substrate which is adjacent to the one side of the small portion and is formed so as to be dividable together with the small portion.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below with reference to the drawings showing the embodiments thereof.

<First Embodiment> A circuit board of the present invention will be described with reference to the drawings. FIG. 1 is a state of the circuit board of the present invention before it is divided, FIG. 2 is a state after the circuit board is divided and bent, FIG. 3 is a case in which the circuit board is installed, and FIG. An example in which the circuit board of the present invention is installed in the housing is shown.

The circuit boards shown in FIGS. 1 and 2 are obtained when the present invention is adopted as a board used in equipment such as a VTR, and are inserted on the board from the component surface 1a of the board as shown in FIG. The discrete component 5 is attached to the hole through the lead and is soldered from the copper foil surface 1b, which is the other surface, which is a so-called general inexpensive single-sided board structure. Between the first substrate 1 and the second substrate 2 (a small portion divided from the circuit board, on which components for operating or connecting from the outside are mounted),
A groove portion 8 is formed along a dividing line which is a boundary line of division, and a perforation 8a (partial breakage) for division is formed in the groove portion (the groove portion and the perforation line). Is formed in the division). Here, as shown in FIG. 1, the second substrate 2 faces one side of the circuit board.

In addition to the above, a jumper wire 3 electrically and circuitically connected for operating the device with the operation keys 4 is provided between the first substrate 1 and the second substrate 2. It exists (over one side of the small part), but there are no connectors for connecting the boards to each other. In this state, it is assumed that the insertion of components and the soldering work have already been completed, and as the next step of the work operation, the process proceeds to board division (cutout), bending work, and installation work on the housing.

First, the substrate is divided (cut out) by perforation 8a.
Is cut out and the first substrate 1 and the second substrate 2 are divided (the second substrate 2 is cut out). At this time, the first substrate 1 and the second substrate 2 are in a state where the connection is maintained by the jumper wire 3 electrically connected.

Next, the second substrate 2 is subjected to a bending process with respect to the first substrate 1 (here, the bending process means that after the first substrate is divided from the circuit board, It is a process that raises the first substrate at an angle). The surface on which the operation keys 4 are mounted with the X direction as an axis faces the front panel direction (1c direction) of the VTR so that the Y direction axis of the second substrate 2 substantially overlaps the Z direction axis as shown in FIG. Is awakened. That is, the second substrate 2 is bent toward the front side 1c so that the component surfaces form an angle of about 90 ° with the first substrate 1.

The second substrate 2 which is usually cut out / divided
Is arranged in a relatively vacant space with a pattern margin on the first substrate 1. However, when it is used for a VTR or the like as in the present embodiment, it can be bent as it is after division. The second substrate 2 is necessarily arranged at the end of the first substrate 1 on the front surface side 1c in consideration of being mounted toward the front surface 1c after being bent. However, when the second board 2 is bent to the front side 1c, the jumper wire 3 is arranged on the first board and further on the front side 1c from the second board, and a slight space is required for bending. This is arranged as the connection space 9.

By the above-mentioned processing, the first substrate 1 and the second substrate 2 are bent at an angle of approximately 90 ° between their component surfaces, but the substrates are connected only by the jumper wire 3. It is connected and there is no other means to hold it.
Therefore, angling and holding are unstable immediately after this bending process, and this is a temporary angling process.

Next, the positioning of the circuit board in the housing will be described. As shown in FIGS. 1 and 2, the first substrate 1 and the second substrate 2 have positioning holes 6 for positioning.
a and a screw hole 6b used for fixing to the housing 10 are formed. In addition, as shown in FIG.
Positioning boss 1 used for positioning with the first substrate 1
2 and screw holes 11 used to fix the first substrate 1
Positioning bosses 14 used for positioning the second substrate 2 and screw holes 13 used for fixing the second substrate 2 are formed.

With these positioning means 6a, 12, 14 and fixing means 6b, 11, 13 provided,
The first substrate 1 and the second substrate 2, which have been bent up to now, are placed in the housing 10. That is, as shown in FIG. 4, the connection portion between the first substrate 1 and the second substrate 2 by the jumper wire 3 is inserted so as to come to the front surface side 1c of the housing 10.

At this time, the first board 1 is positioned by inserting the positioning boss 12 provided in the housing 10 into the positioning hole 6a formed in the first board 1, and then the housing 10 is positioned. The fixing screw 15 is passed through the screw hole 11 on the side and the screw hole 6b on the side of the first substrate 1 to be fixed to the housing 10. Next, with the second substrate 2 being connected to the first substrate 1 only by the jumper wires 3, the positioning boss 14 provided in the housing 10 is inserted into the positioning hole 6a on the substrate. By doing so, after positioning, the fixing screw 15 is passed through the screw hole 13 on the housing 10 side and the screw hole 6b on the second substrate 2 side, so that the housing 10 is installed and fixed.

As described above, when the front panel is mounted on the front surface of the casing 10 with the first substrate 1 and the second substrate 2 installed in the casing 10, the front panel side The user's operation switch unit provided has a structure designed so that the operation key 4 on the second substrate 2 can be reliably turned on.

First substrate 1 as described in the prior art.
In the state where the second board 2 and the second board 2 are connected only by the jumper wire 3, it is possible to reduce the cost by not using the connector, but since the method of fixing the board is not established, it will be used in an unstable state. However, since the positioning is not reliable, the operation of the operation keys becomes unstable. Therefore, as described above, the positioning bosses 12 and 14 and the screw holes 11 and 13 formed on the housing 10 and the positioning holes 6a and the screw holes 6b formed on the board side are combined to bend the board side. The second substrate 2 which is unstable due to the connection with only the jumper wire 3 can be installed stably without requiring consideration in processing.

Further, since the connection space 9 is provided for the first substrate 1 when the first substrate 1 and the second substrate 2 are divided, the connection space 9 can be electrically and structurally connected. It is possible to connect the jumper wire 3 to be connected, and it is not necessary to take complicated means such as inserting a connector at a different position on the first substrate 1 after the division.

Although the present embodiment describes a single-sided board in which the discrete component 5 is arranged on only one side, the same is true while maintaining the relationship between the first board 1 and the second board 2. A double-sided board or a multilayer board may be used because of the large number of discrete components 5 or the small board area as long as the above effect can be obtained.

Further, in the above, the case where the front operation board is used as the second board 2 connected to the first board 1 is described, but the present invention is not limited to this, and it can be diverted to a rear surface or a side operation board. Needless to say, the present invention may be applied to not only the operation board but also a terminal board or the like on which a jack or an external connector for electrically connecting to the outside is arranged.

Positioning bosses 12 and 14 are provided on the case 10 for positioning the case 10 and the substrates 1 and 2.
Although the positioning holes 6a are formed on the substrates 1 and 2 side,
If they can be positioned, these are not always necessary (positioning by claws and grooves, etc.). Meanwhile, the fixing screw 1
Since the fixing by means of the screw 5 and the screw hole 6b is merely one of the fixing means, the target substrate can be fixed even if it is fixed by the locking projection 20 (see FIG. 5) or the like. If there is, it does not matter at all. Here, as for the positions of these positioning means and fixing means, it is needless to say that the present embodiment does not have to be limited as long as desired mounting accuracy and strength can be obtained.

Although the jumper wire 3 is used to connect the first board 1 and the second board 2, a discrete component 5, for example, a resistor or a capacitor is used instead of the jumper wire 3 to lead (foot) the lead. May be connected in. Also,
Even when the jumper wires 3 are used, all of them may not be electrically connected, and a dummy jumper wire for physical connection may be used together for reasons such as maintaining connection strength. Furthermore, it is also possible to use a method in which jumper wire connection and connector connection are used at the same time as needed, or a method in which a jumper wire is electrically used and structurally another molded product is used for connection. , Of course.

Further, in this embodiment, the bending direction of the first substrate 1 and the second substrate 2 is about 90 ° between the component surfaces.
The second substrate 2 is bent upward with respect to the first substrate 1 in an angled direction.
When the present invention is carried out such as when the second board 2 is installed in the upper part of 0, when the second board 2 is cut out and bent, the second board 2 is moved downward so that the solder surfaces form an angle of about 90 °. It goes without saying that a bending method may be adopted. Further, it is needless to say that this angle may be changed to an arbitrary angle as needed, and the devices should be connected at a desired angle for each device depending on the installation place and structure of the second substrate 2.

Alternatively, if it is desired to connect not only the first substrate 1 and one second substrate 2 but also two or more second substrates 2, depending on the connection location. It is obvious that the cost and the number of steps can be considerably reduced by applying the present invention.

Further, in order to widen the installable range of the second substrate 2 after the substrate is divided, as shown in FIG. 6, a complete space is provided between the first substrate 1 and the second substrate 2 at the time of division. If the region 17 of the dummy substrate that can be separated is arranged, the jumper wire 3 can be additionally secured with a length corresponding to the dimension of the region 17 of the dummy substrate after the substrate is divided. It is possible to give more floating to the installation range of the second substrate 2 to the. The region 17 of the dummy substrate at this time may be a substrate to be discarded after division or may be used for other purposes.

[0042]

The circuit board according to claim 1 of the present invention is
In a circuit board on which electrical and electronic parts are mounted and installed in a housing of a device, the circuit board is divided along a dividing line in order to divide a small portion of the circuit board facing one side of the circuit board. And the circuit board other than the small portion and the cut small portion are electrically and / or mechanically connected to each other at the time of division, and the divided portion is formed by being broken across one side of the small portion. Since the connecting means to be arranged is provided, it is possible to have a floating motion within the range of the connecting means with respect to the physical movement between the cutout portion and the other circuit boards, and the cutout portion. Can be easily adjusted to a predetermined housing position.

In the circuit board according to claim 2 of the present invention,
The small portion is arranged in the vicinity of another side different from the one side of the circuit board, and the area of the circuit board sandwiched between the other side and the small portion is provided with the connecting means. Since it will be a connection space that is connected to the
It is possible to dispose connection means that enable structural connection, and it is not necessary to take complicated means such as inserting the connector at different positions on the circuit board after the division.

The circuit board according to claim 3 of the present invention further comprises a positioning means used for positioning with respect to the housing, and a fixing means used for fixing with the housing. The circuit board in an unstable state can be positioned and fixed to the housing, and the circuit board can be installed with desired dimensional accuracy.

In the circuit board according to claim 4 of the present invention,
Since the connecting means is a jumper wire, the cutout portion and the other circuit board can be electrically connected more easily,
It can be mechanically connectable.

In the circuit board according to a fifth aspect of the present invention, since the operation key for operating the device is formed in the small portion, the circuit board is provided outside the housing for operating the device. The operation switch can be linked with a simple circuit board design and installation process.

In the circuit board according to claim 6 of the present invention, since the external connection means for electrically connecting the outside of the device to the outside of the device is formed in the small portion, the electrical connection with the outside of the device is achieved. Connection can be made possible by a simple circuit board design and installation process.

Since the circuit board according to the seventh aspect of the present invention is a single-sided board having a copper foil on only one side, the above effect can be achieved with an inexpensive circuit board.

Since the circuit board according to claim 8 of the present invention is a double-sided board or a multi-layer board, the circuit board of the present invention can be widely used even when there are many electric components or the like, or when the circuit board area is small. it can.

In the circuit board according to claim 9 of the present invention,
Since the connecting means is the lead portion of the electric / electronic component,
It is possible to combine the function of the electric component and / or the electronic component and the function of the connecting means with one component.

A circuit board according to claim 10 of the present invention is
Since a region of the dummy substrate, which is adjacent to the one side of the small portion and is formed so as to be dividable together with the small portion, is further provided, the length of the connecting means corresponds to the region of the dummy substrate. Can be provided for a long time, and the moving range of the cutout portion with respect to the circuit board other than the cutout portion is increased.

[Brief description of drawings]

FIG. 1 is a plan view showing an outline of a circuit board of the present invention.

FIG. 2 is a three-dimensional schematic view showing a bent state of the circuit board of the present invention.

FIG. 3 is a schematic view of a housing in which the circuit board of the present invention is installed.

FIG. 4 is a schematic view showing a state in which the circuit board of the present invention is installed in a housing.

FIG. 5 is an enlarged view showing a state where the housing and the circuit board of the present invention are fixed by the engagement protrusions.

FIG. 6 is a schematic enlarged view showing a state in which a dummy substrate region is newly provided.

FIG. 7 is a plan view showing an outline of a conventional circuit board.

FIG. 8 is a three-dimensional enlarged view showing an outline of a bent state of a conventional circuit board.

[Explanation of symbols]

1 1st circuit board, 2 2nd circuit board, 3 jumper wire, 4 operation keys, 6a positioning hole, 6b, 1
1, 13 screw holes, 8 groove portions, 8a perforations, 9 connection spaces, 10 housings, 12, 14 bosses, 15 screws, 17 dummy board regions, 20 engagement protrusions.

Claims (10)

[Claims] 1. A circuit board, on which electrical and electronic parts are mounted and which is installed in a housing of a device, along a dividing line for dividing a small portion of the circuit board facing one side of the circuit board. A divided portion formed by partially breaking the circuit board, and electrically and / or mechanically connecting the circuit board other than the small portion and the cut small portion when dividing, And a connecting means arranged so as to extend over the side of the circuit board. 2. The small portion is arranged in the vicinity of another side different from the one side of the circuit board, and a region of the circuit board sandwiched between the other side and the small section is It becomes a connection space where connection means is arranged,
The circuit board according to claim 1, wherein: 3. The method according to claim 1, further comprising positioning means used for positioning with respect to the housing, and fixing means used for fixing with the housing. Circuit board. 4. The connecting means is a jumper wire,
The circuit board according to any one of claims 1 to 3, wherein: 5. The operation key for operating the device is formed on the small portion.
The circuit board according to claim 4. 6. The external connection means for making electrical connection to the outside of the device is formed in the small portion,
The circuit board according to any one of claims 1 to 4, wherein: 7. The circuit board according to claim 1, wherein the circuit board is a single-sided board having a copper foil on only one side. 8. The circuit board according to claim 1, wherein the circuit board is a double-sided board or a multilayer board. 9. The circuit board according to claim 1, wherein the connecting means is a lead portion of an electric / electronic component. 10. The circuit board comprises a region adjacent to the one side of the small portion, the region of the dummy substrate being formed so as to be dividable together with the small portion. The circuit board according to any one of claims 1 to 9.