JP2009143462A - On-vehicle control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control device for a vehicle capable of setting a control specification without depending on an other control unit and easily controlling a control circuit board. <P>SOLUTION: In this concentrated switch unit (on-vehicle control device) 1, a circuit 10 for outputting a control signal to an on-vehicle device is provided, and the control circuit board 4 formed with a plurality of screw holes 21 to 23 is fixed to an exterior case body 3 by a screw member N having conductivity. The plurality of screw holes 21 to 23 are formed on the circuit 10. The circuit 10 is made conductive by the screw member N passing through the screw holes 21 to 23. By the presence or absence of the screw member N, a wiring pattern is changed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle-mounted control device that controls a vehicle-mounted device mounted on a vehicle.

  2. Description of the Related Art Conventionally, an in-vehicle control device that controls an in-vehicle device such as an air conditioner mounted on a vehicle is known (for example, see Patent Document 1).

  In this vehicle control device, the control specification is set by acquiring the control specification through communication with another control unit that controls another electronic device.

There is also known a vehicle control device in which a resistance having a different resistance value is provided for each control specification on a control circuit board of the vehicle control device, and the control specification is changed according to the resistance value.
JP 2001-260638 A

  By the way, in the above-described vehicle control apparatus, in order to acquire a control specification by communication with another control unit, it is necessary for the other control unit to store information related to the control specification in advance. Depends on the control specification setting.

  Further, in the case where resistors having different resistance values are provided for each specification, when the control circuit board is manufactured, the resistance is switched for each control specification, which causes a problem that it takes time to manage the control circuit board.

  Therefore, an object of the present invention is to provide a vehicle control device that can set control specifications without depending on other control units and can easily manage a control circuit board.

  In order to solve the above-described problem, a vehicle control device according to the present invention includes a control circuit board in which a circuit for outputting a control signal is provided in an in-vehicle device and a plurality of screw holes are formed, and a screw having conductivity. And an exterior case body to which the control circuit board is fixed by a member. At least one of the plurality of screw holes is formed on the circuit, and the circuit is formed on the circuit. Conductive by the screw member penetrating through the positioned screw hole, the wiring pattern is changed depending on the presence or absence of the screw member.

  Further, the plurality of screw holes are formed at positions where the control circuit board can be fixed without affecting the design surface formed on the exterior case body.

  According to this invention, the screw member for fixing the control circuit board to the exterior case body passes through the screw hole on the circuit, so that the wiring pattern of the circuit provided on the control circuit board can be arbitrarily changed. . Therefore, even with a single control circuit board, the control specifications can be made different depending on the presence or absence of the screw member, and the control circuit board can be easily managed.

  Further, since the control specifications of the control circuit board are set when the control circuit board is fixed to the exterior case body, the control specifications can be set without depending on other control units.

  Furthermore, since the plurality of screw holes do not affect the design surface of the exterior case body and are formed at positions where the control circuit board can be fixed, the screw holes interfere with the design surface, and the design surface is changed. Will not occur. Further, foreign matter does not enter between the control circuit board and the outer case body, and the control circuit board does not rattle.

  The best mode for carrying out the vehicle control device according to the present invention will be described with reference to the drawings.

  Reference numeral 1 shown in FIG. 1 denotes a centralized switch unit (vehicle control device) according to the present invention, which is disposed at a substantially central portion of an instrument panel 2 provided in a vehicle interior.

  The centralized switch unit 1 includes an exterior case body (see FIG. 2) 3 attached to the instrument panel 2 and a control circuit board (see FIG. 3) 4 fixed to the back side of the exterior case body 3. Yes.

  As shown in FIG. 2, the exterior case body 3 has a design surface 3 a exposed in the vehicle interior and a plurality of screw holes 3 b to be screwed to the instrument panel 2. An opening (not shown) that opens forward of the vehicle when attached to the instrument panel 2 is provided.

  A plurality of operation switches 5,... Are provided on the design surface 3a.

  Each operation switch 5 is provided so as to be able to perform a predetermined operation such as a pressing operation or a rotation operation. By the predetermined operation of the operation switch 5, an air conditioner unit, a navigation unit, etc. A control signal is output to an in-vehicle device (not shown).

  A plurality of screw bosses (not shown) are provided on the back side of the exterior case body 3 and inside the opening (not shown). Each screw boss is formed with a screw groove into which a screw member N penetrating through a plurality of screw holes 20,... Described later of the control circuit board 4 or first to third screw holes 21 to 23 is screwed.

  Each screw boss is formed at a position facing the plurality of screw holes 20,... Or the first to third screw holes 21 to 23 and not interfering with the design surface 3a.

  The control circuit board 4 has a flat plate shape formed of an insulating material, and is formed to have a size capable of closing an opening (not shown) provided on the back side of the exterior case body 3.

  The control circuit board 4 is provided with a circuit 10 and first to third screw holes 21 to 23 as shown in FIG.

  A circuit 10 shown in FIG. 4 schematically shows an embodiment of the present invention, and is different from a circuit (not shown) actually provided on the control circuit board 4 shown in FIG. The control circuit board 4 shown in FIG. 3 is formed with a large number of screw holes 20... And a circuit (not shown) is provided on the surface (not shown) facing the outer case body 3.

  The circuit 10 is provided on the surface 4 a (see FIG. 6) of the control circuit board 4 covered with the exterior case body 3, and includes a CPU 11 and conductive wiring 12 connected to the CPU 11.

  The CPU 11 includes a memory unit 11a, first to third input terminals 13a to 13c, and an output terminal (not shown).

  The memory unit 11a is a storage medium such as an EEPROM, and stores a specification determination table indicating the relationship between the presence / absence of the screw member N and the control specifications shown in FIG. This specification determination table can be read as appropriate.

  A wiring 12 is connected to the first to third input terminals 13a to 13c, and an in-vehicle device is connected to an output terminal (not shown).

  When a voltage is input to each of the first to third input terminals 13a to 13c, the CPU 11 compares the input voltage with the specification determination table stored in the memory unit 11a, A predetermined control specification is set according to the input pattern of the voltage, and a control signal according to the control specification is output from the output terminal.

  The wiring 12 has one end connected to the power supply Vcc and the other end connected to the first input terminal 13a, and one end connected to the power supply Vcc and the other end connected to the second input terminal 13b. A second resistor 14b connected to the first resistor 14b, one end connected to the power source Vcc and the other end connected to the third input terminal 13c, one end connected to the first resistor 14a and the other. The first conductive portion 15a having one end grounded, the second conductive portion 15b having one end connected to the second resistor 14b and the other end grounded, the one end connected to the third resistor 14c, and the other end The third conductive portion 15c is grounded.

  The first screw hole 21 penetrates the control circuit board 4 and is formed on the first conductive portion 15 a. The first conductive portion 15 a is broken by the first screw hole 21.

  The second screw hole 22 penetrates the control circuit board 4 and is formed on the second conductive portion 15 b. The second conductive portion 15 b is broken by the second screw hole 22.

  The third screw hole 23 penetrates the control circuit board 4 and is formed on the third conductive portion 15 c, and the third conductive portion 15 c is broken by the third screw hole 23.

  Further, the first to third screw holes 21 to 23 do not affect the design surface 3 a formed in the exterior case body 3 and are formed at positions where the control circuit board 4 can be fixed.

  That is, the first to third screw holes 21 to 23 are formed at positions that do not face the design surface 3a and that are distributed almost evenly over the entire surface of the control circuit board 4 with an appropriate interval. ing.

  In FIG. 3, the plurality of screw holes 20,... Are formed at positions that do not face the design surface 3 a and that are distributed almost evenly over the entire surface of the control circuit board 4 with appropriate intervals. An example is shown.

  The control circuit board 4 passes through at least one of the first to third screw holes 21 to 23 and is screwed into a screw boss (not shown) of the outer case body 3 by a screw member N. It is fixed to the body 3.

  The screw member N is formed of a conductive material such as copper, and contacts the first to third conductive portions 15a to 15c when passing through the first to third screw holes 21 to 23. The first to third conductive portions 15a to 15c are conducted (see FIG. 6).

  Next, the operation of the centralized switch unit 1 according to the present invention will be described.

  In order to assemble the centralized switch unit 1, first, the exterior case body 3 and the control circuit board 4 are formed.

  At this time, the plurality of operation switches 5,... Provided on the design surface 3 a of the exterior case body 3 may not be attached to the exterior case body 3.

  Then, an opening (not shown) on the back surface side of the exterior case body 3 and the surface 4a of the control circuit board 4 are made to face each other so as to cover the circuit 10 provided on the control circuit board 4 by the exterior case body 3. The control circuit board 4 is fixed by the screw member N.

  Here, as shown in FIG. 6, the screw member N passes through the first screw hole 21 and is screwed into a screw boss (not shown) facing the first screw hole 21.

  At this time, the screw member N having conductivity comes into contact with the first conductive portion 15 a broken by the first screw hole 21, and the first conductive portion 15 a becomes conductive by the screw member N.

  Then, after fixing the control circuit board 4 to the exterior case body 3, the design surface 3a is finished by attaching a plurality of operation switches 5,..., Etc., and the concentrated switch unit 1 is assembled.

  Next, in order to set the control specifications of the control circuit board 11, first, a predetermined current is output from the power supply Vcc to the circuit 10.

  When a current is output from the power supply Vcc, a voltage is applied to the wiring 12, and a predetermined voltage is input to each of the first to third input terminals 13a to 13c.

  At this time, since the first conductive portion 15a is conducted by the screw member N, the first resistor 14a is grounded, and a low voltage (0 V in this case) is input to the first input terminal 13a.

  On the other hand, the screw member N is not passed through the second screw hole 22 and the third screw hole 23, and the second conductive portion 15b and the third conductive portion 15c remain broken.

  Therefore, the second and third resistors 14b and 14c are not grounded, and a high voltage (here, 5V) is input to the second input terminal 13b and the third input terminal 15c.

  Then, the CPU 11 compares the voltage input to each of the first to third input terminals 13a to 13c with the specification determination table stored in the memory unit 11a, and according to the voltage input pattern, Set the control specification to “e”.

  On the other hand, in order to set the control specification of the control circuit board 4 to other than “e”, for example, the screw member N is passed through only the second screw hole 22 and the first screw hole 21 and the third screw hole are passed. The screw member N is not penetrated through 23.

  That is, the control circuit board 4 is fixed to the exterior case body 3 by the screw member N that passes through the second screw hole 22.

  Here, since the second screw hole 22 is formed on the second conductive portion 15b, the second conductive portion 15b is conducted. Further, the first and third conductive portions 15a and 15c are not conducted.

  As a result, a high voltage is input to the first input terminal 13a and the third input terminal 13c, and a low voltage is input to the second input terminal 13b.

  Then, the CPU 11 compares the voltage input to each of the first to third input terminals 15a to 15c with the specification determination table stored in the memory unit 11a, and according to the voltage input pattern, Set the control specifications to “C”.

  Thus, in this centralized switch unit 1, the first to third screw holes 21 to 23 are formed on the circuit 10, and the circuit 10 passes through the first to third screw holes 21 to 23. Conductive by the screw member N to be performed, and the pattern of the wiring 12 is changed depending on the presence or absence of the screw member.

  Thereby, even if it is one control circuit board 4, ie, the common control circuit board 4, it becomes possible to set it as a some control specification by varying the penetration position of the screw member N, and this control circuit board 4 Management can be performed easily.

  Further, since the control specifications of the control circuit board 4 are set when the control circuit board 4 is fixed to the exterior case body 3, the control specifications can be set without depending on other control units.

  Furthermore, in the above-described embodiment, the first to third screw holes 21 to 23 do not affect the design surface 3 a formed in the exterior case body 3 and can be fixed to the control circuit board 4. Is formed.

  Thereby, the 1st-3rd screw holes 21-23 will interfere with the design surface 3a, and the change of the design surface 3a does not arise. Further, it is possible to prevent foreign matter from entering between the control circuit board 4 and the outer case body 3 and rattling of the control circuit board 4.

  As mentioned above, although embodiment concerning this invention has been explained in full detail with drawing, a concrete structure is not restricted to the above-mentioned embodiment. Design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.

  For example, in the above-described embodiment, the case where the screw member N penetrates only the first screw hole 21 or the second screw hole 22 has been described. However, the present invention is not limited to this, and the screw member N is the third screw hole. The control circuit board 4 may be fixed by the two screw members N so as to pass through both the first and second screw holes 21 and 22.

  Although not shown here, the control circuit board 4 may have a screw hole that is not located on the circuit 10, and in this case, a screw member N that penetrates the screw hole that is not located on the circuit 10. The control circuit board 4 is fixed by the screw member N, and the screw member N may not penetrate through any of the first to third screw holes 21 to 23.

  Further, FIGS. 7A and 7B show an arrangement example of the screw members N attached to the control circuit board 4. 7A and 7B, the arrangement of the screw members N is changed in the centralized switch unit 1 shown in FIG.

  In this way, a number of screw holes 20,... Are formed in the control circuit board 4, and the control circuit board 4 is fixed by a plurality of screw members N,. While being able to change, it becomes possible to fix the control circuit board 4 more reliably.

  Further, since the plurality of screw holes 20 may be provided at positions corresponding to the design surface 3a of the exterior case body 3, for example, as shown in FIG. It may be.

It is a front view which shows the instrument panel which provided the centralized switch unit which concerns on this invention. It is a front view which shows the concentration switch unit which concerns on this invention. It is a rear view which shows the concentration switch unit shown in FIG. It is a circuit diagram which shows typically the circuit of the centralized switch unit which concerns on this invention. It is explanatory drawing which shows the specification determination table memorize | stored in a memory part. It is sectional drawing which showed typically the cross section of the principal part of a control circuit board. (A) is a rear view showing another fixed pattern of the centralized switch unit shown in FIG. 3, (b) is a rear view showing still another fixed pattern of the centralized switch unit shown in FIG. 3, (c) FIG. 10 is a rear view showing another formation pattern of screw holes formed in the control circuit board.

Explanation of symbols

1 Centralized switch unit (vehicle control device)
3 Exterior Case Body 4 Control Circuit Board 10 Circuit 21 First Screw Hole 22 Second Screw Hole 23 Third Screw Hole N Screw Member

Claims (2)

An in-vehicle device provided with a circuit for outputting a control signal to an in-vehicle device and having a control circuit substrate in which a plurality of screw holes are formed, and an exterior case body to which the control circuit substrate is fixed by a conductive screw member Control device,
At least one of the plurality of screw holes is formed on the circuit,
The vehicle-mounted control device, wherein the circuit is electrically connected by the screw member passing through a screw hole located on the circuit, and a wiring pattern is changed depending on the presence or absence of the screw member. The in-vehicle use according to claim 1, wherein the plurality of screw holes are formed at positions where the control circuit board can be fixed without affecting a design surface formed on the exterior case body. Control device.

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