JP2018049977A - Operating current supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which, in an operating current supply device, a current may be supplied to a load at a time of inspection due to switch failure or the like, which may cause trouble.SOLUTION: A wiring line for causing an operating current to flow in a load is formed on a substrate by turning on a switch and a bypass wiring line is formed on the substrate so that a current bypasses the load even when the switch is turned on so that no current flows through the load. Further, a part of the substrate is made to be a cutout portion, and the cutout portion is cut off so that the bypass wiring line is cut. At a time of using a device which actually performs a load operation, the cutout portion is cut off.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an operating current supply device that supplies an operating current to a load.

For example, there are various devices in which an electronic switch is controlled by a CPU (Central Processing Unit) and current flows from a power source to a load side.
A simple model is shown in FIG. 9A. When the CPU 101 controls the electronic switch 102 to be turned on, the power supply voltage from the battery 103 is applied to the load 104, and a current flows through the load 104. As a result, a circuit or device as the load 104 performs a predetermined operation.

  Patent Document 1 listed below discloses a technique for forming a switch part integrally with a lead and setting the OFF state by cutting the switch part.

Japanese Utility Model Publication No. 7-1547

  By the way, when considering the circuit model as shown in FIG. 9A, when the CPU 101 or the electronic switch 102 fails and the electronic switch 102 is always on (including a short circuit due to the failure), the load is applied when the load 104 is connected. A current flows through 104. Then, the load 104 operates together with the connection, and there is a possibility that a malfunction or failure of the apparatus occurs, or an accident due to an unexpected operation in the manufacturing process, assembly process, preparation process or the like of the apparatus occurs.

In order to prevent such a situation, it is conceivable to arrange a physical switch 105 in series with the electronic switch 102 as shown in FIG. 9B. If the physical switch 105 is kept off, no operating current flows through the load 104 even if the electronic switch 102 is on.
As the physical switch 105, a switch operated by an operator such as a slide switch or a push switch, a switch using a Hall element, a reed switch, or the like can be considered.
However, even if any switch is provided, it is expensive and has a cost disadvantage.
In addition, a slide switch, a push switch, or the like cannot be operated when a circuit board or the like is placed in the apparatus housing. For example, it is difficult to turn on the physical switch 105 after the apparatus is normally assembled, Deteriorating workability.
In addition, a switch using a Hall element has a problem that it may be turned ON / OFF due to the influence of a magnetic field, and current consumption increases.
In the case of a reed switch, there is a risk of turning ON / OFF due to the influence of a magnetic field, and there is a risk of turning ON / OFF due to vibration / impact.

Arranging the physical switch 105 in this way has many problems.
Therefore, in the present invention, even if a physical switch is not used, current supply to the load due to failure of the electronic switch or CPU is prevented, and current can be supplied to the load when the electronic switch or CPU is normal. Provide technology that enables easy migration to

In the operating current supply device according to the present invention, the wiring for allowing the operating current to flow through the load when the switch is turned on is formed on the substrate, and the current is supplied even when the switch is turned on. Bypass wiring that bypasses the load and prevents current from flowing to the load is formed on the substrate, and a part of the substrate is a cut portion, and the cut portion is cut, The bypass wiring is cut off.
In this case, the presence of the bypass wiring prevents the operating current from being supplied to the connected load even when the switch is turned on. When the cut portion of the substrate is cut and the bypass wiring is cut, the operating current is supplied to the load when the switch is turned on.

In the operating current supply device described above, it is conceivable that the cut portion is formed so as to protrude from the main body portion of the substrate.
For example, a cut-out portion is formed as a portion protruding from the main body portion of the substantially square substrate.

In the operating current supply device described above, it is conceivable that a thin portion is formed at the boundary between the main body portion of the substrate and the cut portion.
For example, the thin part which becomes a cutting line is formed by V-cutting the surface of the substrate to form a V-shaped groove.

In the operating current supply device described above, it is conceivable that the bypass wiring is formed using a jumper element in the thin portion.
For example, the bypass wiring is formed as a printed pattern wiring on the substrate, but the printed pattern is discontinuous in the thin portion. This part is connected by a jumper element.

In the operating current supply apparatus described above, it is conceivable that the jumper element is mounted on the thin part so that the center of the element is shifted to the cut part side.
In other words, the bypass wiring is formed so as to straddle the thin portion by the jumper element, but this jumper element is attached in a state of being biased toward the cut portion side from the main body portion.

In the above operating current supply device, it is conceivable to have a case body, and the substrate is accommodated in the case body in a state where the cut portion is exposed to the outside of the case body. .
That is, the operating current supply device formed on the substrate is accommodated in the case body. In this state, the cut portion protrudes from the case body, for example, or is disposed at a portion that is not shielded.

In the above-described operating current supply device, the case body has a cap body that shields all or a part of the case body on the side where the cut portion is exposed, and the cut shape portion is provided in the cap body. The cap body is attached to the case body in a state corresponding to the case, and the cap body is operated in a state of being attached to the case body, so that the cut portion is cut out from the substrate. It is possible.
That is, a cap body is provided for the case body containing the substrate, and for example, a part or all of the inside of the case body is shielded. In this state, for example, the cut portion protruding from the case body is set in a corresponding state, such as being inserted into an insertion hole having a corresponding shape in the cap body.

According to the present invention, even if an extra physical switch is not used, it is possible to prevent current supply to the load due to a failure of the electronic switch or the CPU, and it is possible to prevent problems and accidents due to unnecessary load operation. .
Further, when the electronic switch and its control system are normal, it is possible to shift to a state in which current can be supplied to the load by an extremely easy method of excising the excision part.

It is a block diagram of the operating current supply device of an embodiment of the invention. It is explanatory drawing of the execution procedure at the time of apparatus preparation of embodiment. It is explanatory drawing of the example of an apparatus structure of embodiment. It is explanatory drawing of the case body of embodiment, a cap body, and a board | substrate. It is explanatory drawing of the case body of embodiment, a cap body, and a board | substrate. It is explanatory drawing of excision operation | movement of embodiment. It is explanatory drawing of the boundary part of the cutting part and main-body part of embodiment. It is explanatory drawing of the case body of other embodiment, a cap body, and a board | substrate. It is explanatory drawing of the example of an operating current supply apparatus.

<1. Circuit Configuration of Embodiment>
Hereinafter, an operating current supply device according to an embodiment of the present invention will be described.
FIG. 1A is a block diagram of the operating current supply device 10. The operating current supply device 10 is a device that applies a power supply voltage to the load 4 and supplies an operating current. Therefore, the operating current supply device 10 includes a power supply unit 3, an electronic switch 2, a CPU 1, and a communication unit 5.
The load 4 is a generic name for various devices and circuits.

The power supply unit 3 supplies a power supply voltage. The power supply unit 3 is assumed to be composed of various batteries such as a dry battery and a rechargeable battery. In addition to the battery, an AC / DC converter that obtains a DC voltage from a commercial AC voltage, a power supply circuit unit that generates a power supply voltage by wireless power feeding, or the like may be used. That is, the power supply unit 3 may be configured to obtain a DC power supply voltage for driving the load 4.
The power supply voltage from the power supply unit 3 is applied between the power supply voltage line L1 and the ground line L2 via the electronic switch 2, in other words, between the positive electrode terminal 6 and the ground terminal 7. A load 4 is connected between the positive terminal 6 and the ground terminal 7.

The electronic switch 2 is turned on / off under the control of the CPU 1.
The CPU 1 can check the operation of the switch 2 as well as the on / off control of the electronic switch 2. For example, as shown in the figure, the CPU 1 is configured to be able to detect the voltage V1 on the input end side and the voltage V2 on the output end side of the electronic switch 2 at predetermined terminals. If the voltage V1 = V2, the electronic switch 2 can be detected as on, and if the voltage V1 ≠ V2, the electronic switch 2 can be detected as off.

The communication unit 5 communicates with the external device 90 by wired connection communication or wireless communication. The CPU 1 can send and receive various types of information such as various commands, data, statuses, detection results and the like with the external device 90 by the function of the communication unit 5.
In the case of the present embodiment, the external device 90 can transmit on / off instruction information of the electronic switch 2 to the CPU 1.
The CPU 1 transmits normal / abnormal detection information of the electronic switch 2 and response information for transmission from the external device 90 to the external device 90.

  The CPU 1 turns on the electronic switch 2 in response to a switch-on instruction from the external device 90. The CPU 1 controls the electronic switch 2 to be turned off in response to a switch-off instruction from the external device 90. The CPU 1 determines whether the electronic switch 2 is normal or abnormal depending on whether or not the voltage V1 = V2 when the electronic switch 2 is turned on and the voltage V1 ≠ V2 when the electronic switch 2 is turned off. The normal / abnormal detection information is transmitted to the external device 90.

Originally, when the electronic switch 2 is turned on, the power supply voltage from the power supply unit 3 is applied to the load 4 and an operating current is supplied to the load 4.
However, a bypass line L3 that short-circuits the power supply voltage line L1 and the ground line L2 is formed as illustrated.
In the example of FIG. 1A, the current limiting resistor R1 is provided in the bypass line L3, but this resistor R1 is compared to the load 4 (resistance value between the positive terminal 6 and the ground terminal 7). The resistance value is sufficiently small, for example, a resistance value of about several Ω. Although it is conceivable that the resistor R1 is not provided on the bypass line L3, it is possible to prevent the circuit from being short-circuited if the electronic switch 2 is short-circuited by limiting the current with the resistor R1.
In any case, as long as there is a bypass line L3 that has only a small resistance value due to the wiring resistance component or the resistor R1, when the electronic switch 2 is turned on, the operating current bypasses the load 4 and enters the bypass line L3. Flowing. Therefore, no operating current is supplied to the load 4.
When driving the load 4, it is necessary to physically disconnect the bypass line L3 as shown in FIG. 1B.

For example, the CPU 1, the electronic switch 2, and the electronic elements as the communication unit 5 are mounted on the substrate 20, and the power supply voltage line L 1, the ground line L 2, the bypass line L 3 and the like are formed as printed pattern wiring on the substrate 20.
The load 4 is connected to the positive electrode terminal 6 and the ground terminal 7 of the substrate 20, and this may be an example in which a device (for example, a motor or the like) as a load is electrically connected to the substrate 20. In some cases, all or a part of the circuit as the load 4 is formed by electronic components mounted on the substrate 20.
The power supply unit 3 may be disposed as a battery or the like separately from the substrate 20, or may be configured on the substrate 20 as an AC / DC converter, a wireless power feeding circuit, or the like.

<2. Work procedure>
A device creation procedure using such an operating current supply device 10 is shown in FIG. The device is a device based on the function of various devices assumed as the load 4. As this device, for example, a light emitting device, a sounding device, a display device, various motor driving devices, a control device, a switching device, a detecting device, a signal amplifying device, a computing device, a trigger generating device, and other electrical controls and operations. Any possible device is envisaged.

The worker creates an apparatus in step S101. That is, the operator connects the substrate 20 constituting the operating current supply device 10 to the load 4. When the power supply unit 3 is outside the substrate 20, the power supply unit 3 is also connected.
The worker performs a CPU check in step S102. For example, the operator performs an operation using the external device 90 to execute communication with the CPU 1. For example, the response of the CPU 1 to the transmission is checked, and if the communication is properly executed, the CPU 1 is determined to be normal. In this case, the process proceeds from step S103 to S104, and the electronic switch 2 is checked.
The content transmitted to the CPU 1 by the operator's operation includes an instruction to turn on / off the electronic switch 2. In response to this, the CPU 1 performs an on / off check of the electronic switch 2. That is, the CPU 1 checks whether or not the voltage V1 = V2 with the electronic switch 2 controlled to be on. Further, the CPU 1 confirms whether or not the voltage V1 ≠ V2 in a state where the electronic switch 2 is controlled to be turned off. If these are satisfied, the electronic switch 2 transmits information indicating that it is normal to the external device 90. If any one of them is not satisfied, the CPU 1 transmits information indicating that the electronic switch 2 is abnormal to the external device 90.

The worker confirms the received information with the external device 90. When an appropriate response is not detected from the CPU 1, the operator's procedure proceeds from step S 103 to S 108 and determines that the CPU 1 is defective.
In addition, although an appropriate response is detected from the CPU 1, if switch abnormality information is received, the operator's procedure proceeds from step S 105 to S 108 and determines that the electronic switch 2 is defective.

When information indicating that the electronic switch 2 is normal is received from the CPU 1, it is determined that there is no abnormality in the operating current supply device 10, and the operator instructs or confirms that the electronic switch 2 is off in step S106. I do. For example, the external device 90 transmits an instruction to turn off the electronic switch 2 to the CPU 1 and confirms a reply that the electronic switch 2 is turned off.
In step S107, the operator cuts the cut portion 21 provided on the substrate 20 as described later. Although details will be described later, this excision operation is an operation for cutting the bypass line L3.
By disconnecting the bypass line L3 and setting the state of FIG. 1B, thereafter, when the electronic switch 2 is turned on, an operating current is supplied to the load 4 and the operation of the load 4 is executed.

<3. Example of operation current supply device and device having load and cutting>
An example of a device having an operating current supply device and a load is shown in FIG. 3A. FIG. 3A schematically shows a state in which the substrate 20 and the load 4 on which the operating current supply device 10 is formed are housed in the case body 30. That is, the case body 30 is a housing of the apparatus.

The substrate 20 includes a main body portion 22 that is substantially rectangular in plan view, and a cutout portion 21 that is formed so as to protrude from the main body portion 22.
In the cut portion 21, a part of the bypass line L3 is formed by printed pattern wiring. Wiring and electronic components other than a part of the bypass line L3 are all formed in the main body 22.
For example, as shown in FIG. 4E, the printed pattern wiring forming the bypass line L3 is formed in a U-shape at the cutout portion 21, and both ends thereof, that is, connection points with the power supply voltage line L1 and connection with the ground line L2. The point is on the main body 22. That is, when the cut portion 21 is cut from the main body portion 22, only the bypass line L3 is cut.

3A, a cap body 40 corresponding to the case body 30 is provided.
The cap body 40 is attached, for example, so as to close the surface where the case body 30 is opened, and constitutes a part of the apparatus housing.
At this time, the portion of the case body 30 from which the cutout portion 21 protrudes is opened, and the cap body 40 is attached to the case body 30 in a state where the cutout portion 21 is inserted into the insertion hole 41 of the cap portion 40.

As will be described later, the cap body 40 has a function of excising the excision part 21. For example, when the cap body 40 is rotated with respect to the case body 30, the cut portion 21 inserted into the insertion hole 41 is broken off.
Note that the cap body 40 does not function as a housing of the apparatus, and may be a jig for folding the cut portion 21.

FIG. 3B shows an example in which the substrate 20 is housed in the case body 30 and the cap body 40 is included, but the cap body 40 is a housing that houses the load 4.
A connector 23 is provided on the substrate 20 side, and a connector 48 is also provided on the load 4 side. When the cap body 40 is attached to the case body 30 as shown in FIG. 3C, the connectors 23 and 48 are joined, whereby the operating current supply device 10 and the load 4 are electrically connected.
In the case of a structure in which the excision part 21 is excised by rotating the cap body 40, the electrical connection state is maintained even if the connectors 23 and 48 are rotated.

For example, considering these device configurations, a method for excising the excision part 21 will be described.
4A shows the case body 30 and the substrate 20 in a perspective view, and FIG. 4D shows the end 33 of the case body 30 in a plan view.
The case body 30 is a cylindrical case. Two groove-shaped sandwiching portions 31 for holding the substrate 20 are provided at the cylindrical end portion 33.
FIG. 5 shows a state in which the substrate 20 is housed in the case body 30, but by sandwiching the one end side and the other end side of the main body portion 22 of the substrate 20 by the two sandwiching portions 31, Is fixed in the stowed state.
In addition, one clamping part 31 is clamped so that the front and back both surfaces of a board | substrate may be pinched | interposed in the position (near boundary of the cutting part 21 and the main-body part 22) in which the cut-out part 21 in the main-body part 22 protrudes.
The grooves to be the sandwiching portions 31 may be formed continuously toward the back of the cylindrical case body 30, or a plurality of grooves may be formed intermittently.

  A ring-shaped wall 32 is formed at the end 33 of the cylindrical case 30. The wall portion 32 is formed so as to always close the insertion hole 41 when at least the cap body 40 is rotated with respect to the case body 30.

4B shows the cap body 40 in a perspective view, and FIG. 4C shows the end 45 of the cap body 40 in a plan view.
The cap body 40 is also cylindrical, and the cap body 40 can be attached to the case body 30 so that the illustrated end 45 side closes the end 33 of the case body 30.
In the end portion 45, an insertion groove 41 having a diameter and a depth into which the cut portion 21 of the substrate 20 can be inserted is formed. A central hole 42 is formed, and the periphery thereof is a ring-shaped wall 43.

As can be seen from FIG. 5, the diameter of the end 45 of the cap body 40 is larger than the diameter of the case body 30, and the peripheral wall 44 is formed so that the inside of the end 45 is lowered by one step. The inner diameter of the peripheral wall 44 is substantially equal to the outer diameter of the cylinder of the case body 30 (slightly larger than the outer diameter of the cylinder of the case body 30). It is possible to attach so as to cover the 45 side.
And the excision part 21 is excised by rotating the cap body 40 with respect to the case body 30 in the arrow R direction (or the reverse direction) of FIG.

FIG. 6 schematically shows the state of excision.
FIG. 6A shows a state in which the end portion 33 of the case body 30 and the end portion 45 of the cap body 40 face each other. The substrate 20 is housed in the case body 30 and the cut portion 21 protrudes from the case body 30.
From this state, the cap body 40 is attached to the case body 30 as shown in FIG. 6B. The cap body 40 is attached to the inside of the peripheral wall 44 in a state where the end portion 33 of the case body 30 is inserted. The cut portion 21 is inserted into the insertion hole 41 of the cap body 40.
When the cap body 40 is rotated in the arrow R direction in this state, a force for bending the cut portion 21 by the insertion hole 41 is applied. At this time, the main body portion 22 of the substrate 20, in particular, the vicinity of the base of the cut portion 21 is held by the clamping portion 31 as shown in FIG. 5, so that the cut portion 21 is folded. FIG. 6C shows a state where the excision part 21 is excised by rotation.

In addition, when the part near the base of the excision part 21 in the main body part 22 is sandwiched from both sides by the clamping part 31, there is a possibility that the main body part 22 is broken when the excision part 21 is folded. Remarkably reduced. Moreover, since it is clamped from both sides by the clamping part 31, the excision part 21 can be excised with almost no influence on the main body part 22 by any rotation in the direction of arrow R or in the opposite direction.
Further, the excised portion 21 that has been excised remains in the insertion hole 41, but the ring-shaped wall portion 32 blocks the insertion hole 41 at any position after rotation. Accordingly, it is possible to prevent the cut portion 21 from entering the case body 30 and being positioned on the substrate 20 to damage the substrate 20 or the electronic component or to cause a short circuit.

When the cap body 40 is a jig, the cap body 40 may be removed after the excision and the excision part 21 may be discarded.
When the cap body 40 is used as a part of the housing, the cut portion 21 may be left in the insertion hole 41 as it is, or the cap portion 40 may be removed once and the cut portion 21 may be taken out and discarded.
Note that FIGS. 4 and 5 do not show a mechanism for fixing the cap body 40 in a state where the cap body 40 is attached to the case body 30. When the cap body 40 is used as a jig, it is not particularly necessary. However, when the cap body 40 is used as a part of the apparatus housing, some fixing mechanism for mounting and fixing the cap body 40 to the case body is provided. For example, a mechanism that is fixed in the state of FIG. 6C may be formed.
Further, a structure of the case body 30 is also conceivable in which the cut portion 21 in the insertion hole 41 is discharged after the cap body 40 is rotated as shown in FIG. 6C.
Moreover, although the diameter of the cap body 40 was made larger than the diameter of the case body 30, it is needless to say that the reverse may be possible.

In the above example, the cap body 40 is provided with the central hole 42. Then, for example, as illustrated in FIG. 4F, the extended region 22 </ b> W may be formed in the main body 22 of the substrate 20.
The extended region 22W is formed in a size that does not interfere with the mounting of the cap body 40 by entering the central hole 42 of the cap body 40.
By doing so, the substrate area can be expanded when it is desired to expand the substrate area due to a large number of electronic components mounted on the substrate 20.

Here, a structural example of the boundary portion between the cut portion 21 and the main body portion 22 of the substrate 20 will be described.
FIG. 7A is an enlarged perspective view of the boundary portion between the cut portion 21 and the main body portion 22 in the substrate 20. FIG. 7B is a plan view of the portion, and FIG. 7C is a side view.
As shown in these drawings, V-shaped grooves 25 are formed on both surfaces of the substrate at the boundary between the excision part 21 and the main body part 22 so that the excision part 21 can be easily excised.

As for the bypass line L3, a wiring pattern is set so that both ends of the line are connected to the power supply voltage line L1 and the ground line L2 on the main body part 22, but the bypass line L3 is U-shaped on the cutout part 21. It is pulled out in the shape.
However, the pattern wiring is interrupted because the V-shaped groove 25 is formed at the boundary portion to form a thin portion. Therefore, the bypass line L3 is maintained by the two jumper elements 26. Each jumper element 26 is, for example, a resistance chip of about 0 to several Ω.
7B and 7C, one end of the jumper element 26 is joined to the printed pattern wiring by solder H on the main body portion 22 side and the other end on the cut portion 21 side.
It is conceivable that the two jumper elements 26 constitute the resistor R1 on the bypass line L3 shown in FIG. 1A.

In this way, the bypass line L <b> 3 is formed by straddling the V-shaped groove 25 with the jumper element 26. Accordingly, when the cut portion 21 is cut from the substrate 20, the thin portion (the V-shaped groove 25 portion) of the substrate 20 is cut and the jumper element 26 is broken. In particular, it is considered that the soldered portion of the jumper element 26 and the printed pattern wiring often breaks.
In any case, the jumper element 26 is broken. This does not force the middle of the printed pattern wiring to be cut off. Therefore, it does not occur that the conductor portion of the printed pattern wiring on the main body 22 side is drawn out.

Further, as clearly shown in FIGS. 7B and 7C, the jumper element 26 is mounted at a position biased toward the cut portion 21 side.
That is, the V-shaped groove 25 is the boundary BD between the cut portion 21 and the main body portion 22, but the line CT indicating the center of the jumper element 26 is in a state of being located closer to the cut portion 21 than the boundary BD.
By doing in this way, when the excision part 21 is excised, the possibility that the jumper element 26 remains on the excision part 21 side is increased. That is, the jumper element 26 is also discarded together with the cut portion 21.
In order to further increase the possibility that the jumper element 26 remains on the cut portion 21 side, the lower surface of the jumper element 26 and the surface of the cut portion 21 may be bonded with an adhesive.

FIG. 7D shows the width between the bypass lines L3 formed in a U shape. The width between the U-shaped forward path L3-1 and the return path L3-2, that is, the width W1 between the arrangement positions of the two jumper elements 26 is made larger than the width W2 that is the length of the jumper element 26 itself. ing.
By doing in this way, even if one jumper element 26 remains on the main body portion 22 side after excision, the jumper element 26 is connected to the other line (U-shaped forward path L3-1 and return path L3- The other of the two does not reach. This prevents the bypass line L3, which should have been cut, from being short-circuited by the jumper element 26 and being in a state before being cut.
As described above, the probability is very low because the jumper element 26 is normally left on the cut portion 21 side, but both the forward path L3-1 and the return path L3-2 jumper elements remain in the main body portion 22. There is no possibility. Therefore, it is more preferable that the width W1 between the forward path and the return path is wider than twice the width W2. This is because it is possible to prevent both the jumper elements from contacting each other and the bypass line L3 that should have been disconnected from being conducted.

Another configuration example will be described with reference to FIG.
The board | substrate 20 is hold | maintained in the state clamped by the several clamping part 35 formed in case 30A.
A cutout 21 is formed on the substrate 20, and a pattern as a bypass line L3 is formed on the cutout 21. In this case, the cut portion 21 is disposed inward from the end side of the rectangular substrate 20.
Since the end portion 33 of the case body 30A is not shielded, the cut portion 21 is exposed to the outside of the case body 30A.

A V-shaped groove 25 is formed in a U-shape at the boundary between the excision part 21 and the main body part 22 so that the excision part 21 can be easily excised.
When the V-shaped groove 25 is formed, although not shown, the bypass line L3 may be a jumper element at the boundary between the main body portion 22 and the cutout portion 21.

  Further, in order to prevent the bending force applied at the time of excision from adversely affecting the main body portion 22 and the electronic components on the main body portion 22 and further to prevent the breakage from spreading, a part of the substrate 20 is formed by the ribs 38. Is to be thick.

In the corresponding cap body 40 </ b> A, the end portion 45 is provided with a folding portion 46 having a holding groove 46 a.
When the cap body 40A is fitted to the case body 30A, the sandwiching groove 46a sandwiches the cut portion 21. By rotating the cap body 40 </ b> A in this state, a force for folding the excision part 21 from the main body part 22 is applied and the excision part 21 is excised.
As in this example, the cut portion 21 does not necessarily have to be a portion protruding from the substrate 20.

<4. Summary and Modification>
In the operating current supply device 10 according to the embodiment described above, the following effects can be obtained.
In the operating current supply device 10 according to the embodiment, wirings (power supply voltage line L1 and ground line L2) for causing an operating current to flow through the load 4 when the electronic switch 2 is turned on are formed on the substrate 20. Has been. Initially, a bypass line L3 is formed on the substrate 20 so that even if the electronic switch 2 is turned on, the current bypasses the load 4 and prevents the current from flowing through the load 4. A part of the substrate 20 is used as a cut portion 21, and the cut line 21 is cut so that the bypass line L <b> 3 is cut.
Initially, due to the presence of the bypass line L3, no operating current is supplied to the load 4 regardless of the switch state.
Therefore, when the electronic switch 2 or the CPU 1 is tested at the time of mounting, even if the electronic switch 2 has a failure (short circuit) or the CPU 1 has failed and the electronic switch 2 is turned on, the load 4 Is not supplied with current. As a result, even if the electronic switch 2 or the CPU 1 has a failure, the load 4 does not execute an unnecessary operation, and it is possible to prevent problems and accidents due to the load operating.
Further, there is no need to provide an extra switch (for example, the physical switch 105 in FIG. 9B) for preventing such a malfunction or accident, and this is suitable for cost reduction. Further, there is no problem of malfunction or current consumption when the physical switch 105 is provided.
Furthermore, when the test is completed and the normal operation of the electronic switch 2 and the CPU 1 can be confirmed, the bypass line L3 can be removed simply by excising the excision part 21. That is, since the bypass line L3 can be easily disconnected and the load 4 can be made operable, the handling becomes easy.

  In the example shown in FIGS. 3 to 7, the cut portion 21 is formed to protrude from the main body portion 22 of the substrate 20. That is, the cut portion 21 is formed as a portion protruding from the substantially rectangular main body portion 22. Thereby, the excision part 21 can be folded by applying a little force, and the excision of the excision part 21, that is, the disconnection work of the bypass line L3 is facilitated.

As described with reference to FIGS. 7 and 8, a thin portion is formed by the V-shaped groove 25 at the boundary between the main body portion 22 and the cut portion 21 of the substrate 20.
Thereby, excision of excision part 21 becomes easy. In addition, the line to be cut out when the sheet is folded is clarified, the shape of the body part 22 of the substrate 20 after the cutting is not disturbed, and it is difficult to transmit the impact of the breaking to the body part 22, and the body part 22 is partially damaged. Can also be prevented.
Although an example in which the V-shaped groove 25 is provided on both surfaces of the substrate is shown in FIG. 7, it is also effective to form the V-shaped groove 25 on one surface. The cross section of the groove is not necessarily V-shaped, and may be U-shaped or U-shaped.
Further, a perforation may be provided in place of the V-shaped groove 25.

As described with reference to FIG. 7, the bypass line L <b> 3 is formed using the jumper element 26 in the thin portion. That is, the discontinuous portions of the printed pattern wiring on the substrate are connected by the jumper element 26.
Thereby, even when forming a thin part, the bypass line L3 can be appropriately extended to the cutting part 21. FIG.
In this case, the excision part 21 is a thin part and is excised from the main body part 22. At this time, the jumper element 26 (such as a soldered portion at the end of the jumper element 26) is cut. As a result, the printed pattern wiring remaining on the main body portion 22 can be hardly affected by cutting. For example, it is possible to prevent problems such as the conductor of the wiring pattern being pulled out.

7B and 7C, the jumper element 26 is mounted on the thin portion (V-shaped groove 25) so that the center (CT) of the element is shifted to the cut portion 21 side. It has been.
As a result, when the excision part 21 is excised, the remnants of the jumper element 26 tend to be in a state of sticking to the excision part 21 side. By leaving no jumper element on the main body 22 side, it is possible to eliminate an adverse effect (such as a partial short circuit on the substrate) caused by the jumper element 26.

Moreover, it has the case body 30 and the board | substrate 20 is accommodated in the case body 30 in the state in which the cutting part 21 has exposed outside the case body 30. FIG.
For example, in the example described with reference to FIGS. 3 to 6, the substrate 20 is exposed to the outside of the case body 30 in a state where the cut portion 21 protrudes from the end portion 33 of the case body 30.
In the example described with reference to FIG. 8, the substrate 20 is exposed outward in a state in which the cut portion 21 is disposed at a position where it is not shielded within the end portion 33 of the case body 30.
Thereby, while being able to provide the operating current supply apparatus 10 which comprised the housing | casing with the case body 30, it becomes very easy to cut out the cutting part 21 for mounting. That is, since the excision part 21 is exposed to the outside of the case body 30, for example, it can be excised using the cap body 40, the operator can fold it off by hand, or it can be excised using pliers or the like. Usability is greatly improved.

3 to 8, the cap body 40 that shields all or a part of the end 33 of the case body 30, that is, the side on which the cut-out portion 21 is exposed, is provided. The cap body 40 is attached to the case body 30 in a state corresponding to the corresponding shape portion (the insertion hole 41 and the holding groove 46a) provided in the cap body 40.
For example, in the example of FIGS. 3 to 7, the cap body 40 is mounted in a state where the cut portion 21 protruding from the case body 30 is inserted into the insertion hole 41 that is the corresponding shape portion.
In the example of FIG. 8, the cap body 40 is mounted in a state where the cut portion 21 exposed at the end portion 33 of the case body 30 is sandwiched between the sandwiching grooves 46 a that are the corresponding shape portions.
Then, when the cap body 40 is rotated, for example, while being attached to the case body 30, the excision part 21 is excised from the substrate 20. That is, by rotating the cap body 40 with respect to the case body 30, a force is applied to the cut portion 21 in the bending direction, and the cut portion 21 is cut off. Therefore, the device constituted by the operating current supply device 10 and the load 4 can be easily put into an operable state.
The cap body 40 may be variously considered, such as a jig for excision, a temporary lid corresponding to the case body 30, or a structure that forms a finished product case together with the case body 30. In any case, by using such a cap body 40, it is possible to realize ease of excision and improvement of usability.

Various shapes and structures of the case body 30 and the cap body 40 are conceivable. Although the cylindrical shape is exemplified in the embodiment, various shapes such as a rectangular parallelepiped shape, a spherical shape, and a polygonal column shape are conceivable.
Of course, various structures for excision of the excision part 21 are conceivable depending on the shapes of the case body 30 and the cap body 40. The same applies to the shape of the substrate 20 and the position and shape of the cut portion 21.

  DESCRIPTION OF SYMBOLS 1 ... CPU, 2 ... Electronic switch, 3 ... Power supply part, 4 ... Load, 5 ... Communication part, 10 ... Operating current supply apparatus, 20 ... Substrate, 21 ... Removal part, 22 ... Body part, 25 ... V-groove, 26 ... Jumper element, 30, 30A ... Case body, 31, 35 ... Clamping part, 32 ... Wall part, 33 ... End part, 40, 40A ... Cap body, 41 ... Insertion hole, 42 ... Center hole, 43 ... Wall part , 44 ... peripheral wall, 45 ... end, 46 ... folding part, 46a ... clamping groove, 90 ... external device, L1 ... power supply voltage line, L2 ... ground line, L3 ... bypass line

Claims (7)

The wiring for allowing the operating current to flow to the load when the switch is turned on is formed on the substrate,
A bypass wiring is formed on the substrate to prevent current from flowing through the load even when the switch is turned on, so that no current flows through the load.
A part of the substrate is a cut portion, and the cut portion is cut to cut the bypass wiring. The operating current supply device according to claim 1, wherein the cut portion is formed so as to protrude from a main body portion of the substrate. The operating current supply device according to claim 1, wherein a thin portion is formed at a boundary between the main body portion and the cut portion of the substrate. The operating current supply device according to claim 3, wherein in the thin portion, the bypass wiring is formed using a jumper element. The operating current supply device according to claim 4, wherein the jumper element is attached on the thin part so that a center of the element is shifted to the cut part side. Having a case body,
The operating current supply device according to any one of claims 1 to 5, wherein the substrate is housed in the case body in a state where the cut portion is exposed to the outside of the case body. A cap body that shields all or part of the side of the case body on which the cut portion is exposed;
The cap body is attached to the case body in a state where the cut portion corresponds to the corresponding shape portion provided in the cap body,
The operating current supply device according to claim 6, wherein the cut portion is cut from the substrate by operating the cap body in a state of being attached to the case body.

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