JP2008034160A - Electronic circuit board and electronic apparatus provided therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic circuit board by which destination, vehicle type and specification can be set in the electronic circuit board which is normally not equipped with a control circuit such as a micro computer, and to provide an electronic apparatus with the electronic circuit board. <P>SOLUTION: The electronic circuit board 2 with the electronic circuit implemented with a plurality of functions is provided with switches from 2b1 to 2b5 corresponding to each function. Then, the electronic circuit board 2 is stored in a case 3 provided with holes from 3a to 3e in positions corresponding to the switches from 2b1 to 2b5 when stored. Next, an attaching member 4a is attached by an attaching screw 4a3. When this is carried out, since the screw hole 4a2 for the screw 4a3 in the attaching member 4a is provided in the position corresponding to the hole 3a, the switch 2b1 is pushed by the attaching screw 4a3 and the function is selected corresponding to the switch 2b1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electronic circuit board having different specifications depending on a destination and the like and an electronic device including the electronic circuit board.

  For example, in a car audio as an electronic device provided with an electronic circuit board, some of the functions mounted on the electronic circuit board may be changed depending on the destination and the type of vehicle mounted.

  In such a case, conventionally, a plurality of electronic circuit boards in which circuits and components are changed for each different specification have been prepared. In the method of preparing an electronic circuit board in which circuits, components, and the like are changed for each different specification, there is a problem that design management and manufacturing management become complicated because a plurality of types of boards must be designed and manufactured.

For the above-described problem, an electronic device disclosed in Patent Document 1 has been proposed. The electronic device described in Patent Document 1 uses a case where a cord to which a power supply voltage is applied is branched and connected to a vacant terminal using a vacant terminal of a connector of a relay cord fitted to a connector of the device body, The control circuit determines the destination and the like by discriminating the voltage applied to the vacant terminal when not, and the control circuit automatically sets the destination according to the destination.
Japanese Patent Laid-Open No. 9-82434

  However, although the electronic device described in Patent Document 1 includes a control circuit for determining and setting a destination, for example, a device that does not normally include a microcomputer or the like corresponding to the control circuit such as a power amplifier unit. It was not possible to apply.

  Therefore, the present invention provides an electronic circuit board capable of setting specifications such as a destination and a vehicle type in an electronic circuit board that does not normally include a control circuit such as a microcomputer, and an electronic device including the electronic circuit board. Let it be an issue.

  In order to solve the above-mentioned problem, the invention according to claim 1 is an electronic circuit board having a plurality of functions attached to an external member and mounted with an electronic component, wherein the plurality of functions are fixed portions of the external member. And selecting means selected from among the plurality of functions, thereby fixing the selected function among the plurality of functions.

  Hereinafter, an electronic circuit board according to an embodiment of the present invention will be described. In the electronic circuit board according to the embodiment of the present invention, the plurality of functions are fixed to a predetermined selected function among the plurality of functions by the selection unit selected by the fixing unit of the external member. In this way, since the fixed part for selecting the selecting means from the external member is provided, it is possible to change the specification depending on the destination and the vehicle type without using a control circuit such as a microcomputer, and the control circuit is originally provided. Even in such an electronic circuit board, it is possible to easily cope with a plurality of specifications with one type of board.

  Moreover, you may provide the fixing | fixed part fixed to a predetermined function in the housing of the electronic device which accommodated the electronic circuit board of Claim 1 in the housing. By doing in this way, since it can fix to a predetermined function among a plurality of functions from a member outside an electronic circuit board, a predetermined function of electronic equipment is selected and fixed. Therefore, it is possible to change specifications depending on the destination and vehicle type without using a control circuit such as a microcomputer, and even with electronic circuit boards that do not originally have control means, one type of board can easily handle multiple specifications. can do.

  Alternatively, the selection means may be selected by providing a hole at a position corresponding to the selection means of the housing and inserting the fixing portion into the hole. By doing so, it is possible to fix the selection of the function from the outside after assembling the electronic device.

  Moreover, the attachment means for attaching a housing | casing to a predetermined place is provided, and a fixing | fixed part may be provided in an attachment means. By doing in this way, a function can be fixed simultaneously with attaching an electronic device.

  Moreover, a fixing part may be provided in the housing. By doing in this way, a function can be fixed when an electronic circuit board is incorporated at the time of assembling an electronic device.

  An electronic apparatus 1 containing an electronic circuit board 2 according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a cross-sectional view of the electronic apparatus 1. The electronic device 1 is a car audio device that is attached to a vehicle, for example, and functions differently depending on the destination and the vehicle type. The electronic device 1 includes an electronic circuit board 2, a case 3, and a mounting member 4.

  The electronic circuit board 2 includes electronic components 2a such as resistors, capacitors, and ICs, and switches 2b1 to 2b5, and circuit wiring (not shown) formed on the surfaces of the electronic components 2a and the switches 2b1 to 2b5 and the electronic circuit board 2 An electronic circuit for realizing a plurality of functions of the electronic device 1 is configured from the pattern.

  The switches 2b1 to 2b5 as selection means are switches for selecting whether or not to function a plurality of functions of the electronic circuit board 2, that is, a function, and are provided corresponding to each function. The switches 2b1 to 2b5 are pressed in contact with the outside of the case 3 to select corresponding functions. The switches 2b1 to 2b5 are provided at positions that can be pressed from the outside of the case 3, such as an end of the electronic circuit board 2 or a surface on which the electronic component 2a is not provided.

  The case 3 as an external member or housing is for housing the electronic circuit board 2 and is provided with holes 3a to 3e at positions corresponding to the switches 2b1 to 2b5.

  The attachment member 4 as a fixing part and attachment means is composed of 4a and 4b, which are respectively attached to the opposite side surfaces of the case 3, and screw holes 4a1 and 4b1 for vehicle attachment are provided in the respective parts, and the attachment device 4 provides electronic equipment. 1 is attached to a vehicle.

  The attachment member 4a is provided with a screw hole 4a2 at a position corresponding to the hole 3a provided in the case 3 when the case 3 is attached, and attached so as to penetrate the screw hole 4a2 and the hole 3a on the case 3 side. It is fixed to the case 3 by a screw 4a3 and is integrated with the case. At this time, since the switch 2b1 is pressed by the mounting screw 4a3, the function corresponding to the switch 2b1 is selected.

  The attachment member 4b is provided with a protrusion 4b2 at a position corresponding to the hole 3a provided in the case 3 when the case 3 is attached. When the attachment member 4b is attached to the case 3 with an attachment screw (not shown), the protrusion 4b2 Since the switch 2b5 is pressed by this, the function corresponding to the switch 2b5 is selected.

  In the present embodiment, since the switches 2b2 to 2b4 are not pressed from the outside of the case, the function corresponding to each switch is not selected.

  Here, how the function of the electronic device 1 is selected by the switches 2b1 to 2b5 will be described with reference to FIGS.

  FIG. 2 is a functional block diagram of an electronic circuit configured on the electronic circuit board 2. The electronic circuit configured on the electronic circuit board 2 includes a pre-stage circuit unit 11, a function 1 unit 12, a function 2 unit 13, a function 3 unit 14, a function 4 unit 15, a function 5 unit 16, and a post-stage circuit unit 17. It is configured.

  The pre-stage circuit unit 11 outputs an ON signal for operating the function 1 unit 12 to the function 5 unit 16.

  The function 1 unit 12 is a function in which selection / non-selection is switched by the switch 2b1. The function 2 unit 13 is a function in which selection / non-selection is switched by the switch 2b2. The function 3 unit 14 is a function in which selection / non-selection is switched by the switch 2b3. The function 4 unit 15 is a function in which selection / non-selection is switched by the switch 2b4. The function 5 unit 16 is a function in which selection / non-selection is switched by the switch 2b5.

  The post-stage circuit unit 17 is a circuit to which signals processed by the function 1 unit 12 to the function 5 unit 16 are input.

  The switches 2b1 to 2b5 described above are connected between the pre-stage circuit unit 11 and the function 1 unit 12 to the function 5 unit 16, respectively.

  In the state shown in FIG. 1, that is, when the switches 2b1 and 2b5 are pressed by the mounting screw 4a3 and the protrusion 4b2, the switches 2b1 and 2b5 are both turned on, so that the function 1 part 12 and the function 5 part 16 When the ON signal is input from the pre-stage circuit unit 11 to the function 1 unit 12, the function 1 unit 12 starts to function and the signal processed by the function 1 unit 12 is output to the post-stage circuit unit 17. When the ON signal is input from the pre-stage circuit unit 11 to the function 5 unit 16, the function 5 unit 16 starts to function and the signal processed by the function 5 unit 16 is output to the post-stage circuit unit 17. At this time, since the switches 2b2 to 2b4 are OFF, the function 2 unit 13 to the function 4 unit 15 are in a non-selected state and do not operate even if an ON signal is output from the pre-stage circuit unit 11. That is, a predetermined function is selected from a plurality of functions and fixed by the fixing means.

  In this embodiment, in order to put the switch 2b1 into a non-selected state, for example, the attachment screw 4a3 may be screwed to a position not corresponding to the hole 3a of the case 3. In the case of the switch 2b5, for example, the protrusion 4b2 may not be provided on the attachment member 4b. In order to select the switches 2b2 to 2b4, an attachment member may be formed and attached so as to press the corresponding switch.

  The switches 2b1 to 2b5 are not limited to the functional or circuit positions as shown in FIG. 2, but may be arranged at the positions as shown in FIGS. FIG. 3 shows an example in which a switch is provided in the subsequent stage of each functional unit.

  In FIG. 3, since the switch is provided at the subsequent stage of each functional unit, the functional unit with the switch OFF does not transmit a signal to the subsequent circuit unit 17, and thus it appears that there is no functional unit from the subsequent circuit unit 17 (non-selected state) ). Accordingly, the electronic device 1 does not have the function realized by the functional unit whose switch is OFF. That is, in the case of FIG. 3, the function of the functional unit whose switch is ON is fixed in a selected state.

  Next, FIG. 4 shows a case where a switch is provided in the power supply or ground wiring in the functional part. In FIG. 4, if the switch 2b1 is connected to either the power line or the ground line of the function 1 unit 12 and the switch 2b1 is turned on to supply power or ground, the circuit of the function 1 unit 12 operates. That is, the function realized by the function 1 unit 12 is selected. Unless power is supplied or grounded by turning off the switch 2b1, the circuit of the function 1 unit 12 does not operate and is not selected. If the circuit of the function 1 unit 12 does not operate, it appears from the subsequent circuit unit 17 that the function 1 unit 12 does not exist. Therefore, if the power is not supplied or grounded by turning off the switch 2b1, the function realized by the function 1 unit 12 is an operation that the electronic device 1 does not have.

  The other functional units have the same configuration as that shown in FIG. 4, so that selection / non-selection of functions realized by the functional units can be switched.

  According to the present embodiment, in the electronic device 1 in which electronic circuits having a plurality of functions are configured on the electronic circuit board 2, the switches 2 b 1 to 2 b 5 are selected in order to select the function of the electronic circuit according to the destination or the vehicle type. Provided to correspond to each function. The function of each switch is selected by being pressed from attachment members 4a and 4b attached to the outside of the case 3 of the electronic device 1. In this way, electronic circuit boards and electronic devices that do not have a control circuit such as a microcomputer have different specifications for each destination and vehicle type, and the electronic circuit boards are common, making it easy to assemble and install electronic devices. Can be changed. Furthermore, since function selection is performed when fixing with the attachment member 4, a function is fixed after attachment, and a user does not need to be conscious of function selection.

  2 to 4, the front circuit unit 11 and the rear circuit unit 17 are shown as one block, but may be divided into a plurality of blocks instead of one. That is, in FIG. 2, a block that outputs an ON signal to each functional unit may be provided for each functional unit. 2 to 4, there may be a plurality of subsequent circuits. Of course, the output from each functional unit is not limited to being output to one block, but may be a plurality of outputs.

  Next, an electronic apparatus 1 'according to a second embodiment will be described with reference to FIG. The same parts as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  In this embodiment, a pin member 4 'is used instead of the mounting member 4 used for pressing the switches 2b1 to 2b5 in the first embodiment.

  The selection of the function is fixed by inserting the pin member 4 'into the hole corresponding to the switch corresponding to the function desired to be selected from the holes provided in the case 3 and pressing the switch.

  According to the present embodiment, in the electronic device 1 in which the electronic circuit is configured on the electronic circuit board 2, the switches 2b1 to 2b5 are adapted to the function in order to change the function of the electronic circuit depending on the destination or the vehicle type. Provide to do. Each switch has a function selected by being pressed from a pin member 4 ′ attached from the outside of the case 3 of the electronic device 1. In this way, electronic circuit boards and electronic devices that do not have a control circuit such as a microcomputer have different specifications for each destination and vehicle type, and the electronic circuit boards are common, making it easy to assemble and install electronic devices. Can be changed. Furthermore, since the function selection is performed when the pin member 4 ′ is fixed, the function is fixed after the electronic device is assembled, and the user does not need to be aware of the function selection.

  In the embodiment described above, the pin member 4 ′ may be a screw-like member.

  In the first and second embodiments described above, the hole provided in the case 3 corresponding to the non-selected function switch may be closed with tape or the like to prevent erroneous selection.

  Next, an electronic apparatus 1 ″ according to a third embodiment will be described with reference to FIG. The same parts as those in the first and second embodiments described above are denoted by the same reference numerals and description thereof is omitted.

  In the first and second embodiments described above, the electronic circuit board 2 and the case 3 are common, and specifications such as a destination and a vehicle type are made by inserting a fixing portion into the hole of the case 3 and pressing the switches 2b1 to 2b5. However, in this embodiment, as shown in FIG. 6, the functional configuration can be selected by changing the shape of the case 3 '.

  The case 3 'has protrusions 3f and 3g formed on the bottom surface (the surface in contact with the electronic circuit board 2) in the case 3'.

  In this embodiment, the switches 2b2 and 2b3 of the electronic circuit board 2 are not press switches, but are sheet metals 2b2 'and 2b3' to which the ground wires of the corresponding functional units are connected.

  Therefore, if the protrusion 3f is formed to have conductivity, the circuit of the functional unit to which the sheet metal 2b2 'is connected operates because the sheet metal 2b2' connected to the protrusion 3f is grounded. That is, it becomes a selection state. Since the sheet metal 2b3 'has no corresponding protrusion, the circuit is not grounded, so that the circuit does not operate. That is, it becomes a non-selection state.

  The projection 3g is provided inside the case in place of the mounting screw 4a3, the projection 4b2 and the pin member 4 'of the mounting member 4, and presses the switch 2b4. When the switch 2b4 is pressed, the function corresponding to the switch 2b4 is selected.

  According to the present embodiment, in the electronic device 1 in which the electronic circuit is configured on the electronic circuit board 2, the switches 2b2 to 2b4 are adapted to the function in order to change the function of the electronic circuit depending on the destination or the vehicle type. Provide to do. The function of each switch is selected by contacting or pressing a protrusion provided inside the case 3 of the electronic device 1. In this way, electronic circuit boards and electronic devices that do not have a control circuit such as a microcomputer have different specifications for each destination and vehicle type. It can be easily changed when the device 1 is assembled or attached.

  In the above-described embodiment, a switch is provided for each function. For example, when two functions are in mutually exclusive conditions, that is, when one function is selected, the other is not selected. In this case, the output of the two functions or the power source may be a 2-input 1-output selector, and its control terminal may be switched from the outside.

  In the above-described embodiment, the function corresponding to the case where the switch is pressed is selected. Conversely, the function corresponding to the case where the switch is not pressed may be selected.

  In the above-described embodiments, the pressing switch and the sheet metal are used. However, the function is automatically performed by performing assembly or attachment in accordance with each specification when assembling electronic devices such as jumper pins. Any device that can perform ON / OFF or one / other switching can be used.

  According to the embodiment described above, the following electronic circuit board can be obtained.

(Additional remark 1) In the electronic circuit board 2 which is attached to the case 3 and the electronic component 2a is mounted and has a plurality of functions,
A plurality of functions are provided with switches 2b1 to 2b5 that are selected by a mounting screw 4a3 inserted into the case 3, and a predetermined function is selected from among the plurality of functions, thereby fixing the selected function among the plurality of functions. An electronic circuit board 2 characterized in that

  According to this electronic circuit board 2, since the mounting screw 4a3 for selecting the switches 2b1 to 2b5 is inserted into the case 3, it is possible to change the specifications depending on the destination or the vehicle type without using a control means such as a microcomputer. Thus, even in the electronic circuit board 2 that originally does not include the control means, it is possible to easily cope with a plurality of specifications with one type of board.

  In addition, the Example mentioned above only showed the typical form of this invention, and this invention is not limited to an Example. That is, various modifications can be made without departing from the scope of the present invention.

It is sectional drawing of the electronic device concerning 1st Example of this invention. It is a functional block diagram of the electronic circuit of the electronic circuit board concerning the 1st example of the present invention. FIG. 3 is a functional block diagram of an example different from the functional block diagram shown in FIG. 2. FIG. 4 is a functional block diagram of an example different from the functional block diagrams shown in FIGS. 2 and 3. It is sectional drawing of the electronic device concerning the 2nd Example of this invention. It is sectional drawing of the electronic device concerning the 3rd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic device 2 Electronic circuit board 2b1-2b5 Switch (selection means)
2b2 'Sheet metal (selection means)
2b3 'Sheet metal (selection means)
3 Case (frame, external member)
3a-3e hole 3f, 3g protrusion (fixed part)
4a Mounting member (fixing part, mounting means)
4a3 Mounting screw (fixing part)
4b Mounting member (fixing part, mounting means)
4b2 Projection (fixed part)
4 'Pin member (fixed part)

Claims (5)

In an electronic circuit board attached to an external member and having a plurality of functions on which electronic components are mounted,
The plurality of functions include a selection unit that is selected by a fixing portion of the external member, and a predetermined function is selected from the plurality of functions to be fixed to the function selected from the plurality of functions. An electronic circuit board characterized by that.   An electronic device, wherein the external member is a housing that houses the electronic circuit board according to claim 1, and the housing includes the fixing portion.   The electronic apparatus according to claim 2, wherein a hole is provided at a position corresponding to the selection unit of the housing, and the fixing unit selects the selection unit by being inserted into the hole. An attachment means for attaching the housing to a predetermined location on the housing;
The electronic apparatus according to claim 3, wherein the fixing portion is provided in the attachment unit. The electronic device according to claim 2, wherein the fixing portion is provided in the housing.

Images