JP2008027729A - Switch for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switch used mainly for various controls of automobiles in which power saving can be realized and positive lighting and turning-off of a stop lamp can be secured. <P>SOLUTION: A control means 8 which performs switching of a switching means 7 according to strength and weakness of magnetism of a magnet 3 is connected to an ignition switch, and a switch contact 24 which performs electric contact and separation by vertical movement of an actuator 22 is installed between a battery and the control means 8. Thereby, power saving is realized and lighting and turning-off of a stop lamp 25 can be positively made to obtain the vehicle switch. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicular switch that is mainly used for controlling the extinction of a stop lamp when operating a brake pedal of an automobile.

  In recent years, a push-operated type vehicle switch is mainly used for controlling the stop lamp accompanying the operation of the brake pedal. The stop lamp is turned on when the brake pedal is depressed and turned off when the brake pedal is released. ing.

  Such a conventional vehicle push switch will be described with reference to FIGS. 4 and 5. FIG.

  FIG. 5 is a cross-sectional view of a conventional vehicle switch. In FIG. 5, reference numeral 1 denotes a case made of a substantially box-shaped insulating resin with an upper surface opening, and 2 an operating body accommodated in the case 1 so as to be movable up and down. The magnet 3 is mounted on the lower side surface of the operating body 2.

  Reference numeral 4 denotes a plurality of terminals made of conductive metal, 5 denotes a wiring board in which a plurality of wiring patterns (not shown) are formed on the left and right surfaces, and the wiring board 5 is disposed on the left side wall of the case 1, The upper ends of the plurality of terminals 4 are connected to the wiring pattern of the wiring board 5 by soldering or the like, and the lower ends of the terminals 4 protrude downward from the bottom surface of the case 1.

  Further, on the surface of the wiring board 5 facing the magnet 3, a detection means 6 such as a Hall element and a switching means 7 such as a power transistor are formed, and a control means 8 is formed by an FET or a plurality of fixed resistors. The detecting means 6 and the switching means 7 are connected to the control means 8.

  Further, 9 is a coiled return spring, 10 is an insulating resin cover that covers the opening on the top surface of the case 1, and the return spring 9 is slightly bent between the lower surface of the operating body 2 and the bottom surface of the case 1. The vehicle switch 12 is configured by being mounted and biasing the operating body 2 upward, and the upper end of the operation shaft 2A of the operating body 2 projecting upward from the hollow cylindrical portion 10A at the center of the upper surface of the cover 10.

  In the vehicle switch 12 configured as described above, the operation shaft 2A of the operating body 2 is generally pressed by the arm 13A in front of the brake pedal 13 of the automobile as shown in the side view of the main part of FIG. A plurality of terminals 4 that are mounted in a state and protrude from the bottom surface of the case 1 are connected to a stop lamp, an ignition switch, a battery, and the like by a connector 14 and lead wires.

  That is, in a state where the brake pedal 13 is not depressed, the operating shaft 2A of the operating body 2 is pressed downward while bending the return spring 9, and the magnet 3 mounted on the side surface of the operating body 2 also moves downward. The center of the detection means 6 disposed opposite to the center of the magnet 3 is greatly separated, and the magnetism of the magnet 3 detected by the detection means 6 is weak.

  The control means 8 connected to the detection means 6 closes the switching means 7 when the magnetic flux density detected by the detection means 6 is greater than or equal to a predetermined value, and the magnetic flux density is predetermined. When the value is equal to or smaller than the value, the switching means 7 is opened. Therefore, when the operating body 2 is pressed, the switching means 7 is opened and the stop lamp is turned off.

  When the brake pedal 13 is depressed, the arm 13A is separated from the operation shaft 2A and the pressing force is removed, so that the operating body 2 moves upward by the elastic return force of the return spring 9, as shown in FIG. The magnet 3 mounted on the operating body 2 is also moved upward so that the magnet 3 and the detection means 6 face each other, and the magnetism of the magnet 3 detected by the detection means 6 becomes strong. 7 is switched to the closed state, and the stop lamp lights up.

  In the operation of the brake pedal 13 as described above, for example, when the vehicle is stopped at a certain place such as a succeeding vehicle, even when the brake pedal 13 is depressed even when the ignition switch is turned off and the engine is stopped. It is necessary to turn on the stop lamp.

  For this reason, the detection means 6 for detecting the magnetism of the magnet 3 and the control means 8 for switching off the switching lamp 7 to turn off the stop lamp as described above, the battery can be used even when the ignition switch is cut off and the engine is stopped. Therefore, the power is always supplied and the stop lamp can be turned on.

As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2006-92777 A

  However, in the conventional vehicle switch described above, a battery is connected to the detection means 6 and the control means 8 so that the stop lamp can be turned on when the brake pedal 13 is depressed even when the ignition switch is disconnected and the engine is stopped. Therefore, there is a problem that it is difficult to achieve power saving because a current of about 3 mA is always supplied.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a vehicle switch that can save power and that can reliably turn off a stop lamp.

  In order to achieve the above object, the present invention has the following configuration.

  According to the first aspect of the present invention, the control means for opening and closing the switching means according to the magnetism of the magnet is connected to the ignition switch, and the switch is electrically connected and separated by the vertical movement of the operating body. A contact is provided between the battery and the control means to constitute a vehicle switch. When the ignition switch is disconnected and the engine is stopped, no current flows through the detection means or the control means. When the brake pedal is depressed in this state, power is supplied to the detection means and the control means by the switch contact, and the stop lamp can be turned on. It has the effect that it is possible to obtain a vehicular switch that can surely turn off and turn off the stop lamp.

  According to a second aspect of the present invention, in the first aspect of the invention, the switch contacts are electrically connected and separated faster than the switching means when connected and slower than the switching means when disconnected. Since the power is always supplied to the detection means and the control means through the switch contact while the switch is opened and closed, the stop lamp can be reliably turned off and on.

  As described above, according to the present invention, it is possible to achieve an advantageous effect that power saving can be achieved and a vehicle switch capable of surely turning off and turning off the stop lamp can be realized.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  In addition, the same code | symbol is attached | subjected to the part of the structure same as the structure demonstrated in the term of background art, and detailed description is simplified.

(Embodiment)
FIG. 1 is a sectional view of a vehicle switch according to an embodiment of the present invention, and FIG. 2 is a circuit diagram thereof. In the figure, reference numeral 21 denotes an upper surface opening and insulation such as substantially box-shaped polybutylene terephthalate or acrylonitrile butadiene styrene The resin case 22 is a substantially cylindrical and similarly insulating resin operating body. The operating body 22 is accommodated in the case 21 so as to be movable up and down, and a magnet 3 is provided on the lower left side of the operating body 22. It is installed.

  Reference numeral 4 denotes a terminal made of a conductive metal such as a copper alloy, and 5 denotes a wiring board having a plurality of wiring patterns (not shown) formed on the left and right surfaces. The wiring board 5 is arranged on the left side wall of the case 21. At the same time, the upper ends of the plurality of terminals 4 are connected to the wiring pattern of the wiring substrate 5 by soldering or the like, and the lower ends of the terminals 4 protrude downward from the bottom surface of the case 21.

  In addition, a detecting means 6 such as a Hall element and a switching means 7 such as a power transistor are formed on the surface of the wiring board 5 facing the magnet 3, and a differential amplifier 8A such as an FET, a voltage detector 8B, and the like. The control means 8 is formed by the fixed resistor, and the detection means 6 and the switching means 7 are connected to the control means 8.

  Furthermore, 24A is a substantially U-shaped movable contact made of a thin metal such as a copper alloy. One end of the movable contact 24A is mounted and fixed on the lower right side surface of the operating body 22 and is attached to the right inner wall of the case 21. In this case, a plurality of fixed contacts 24B made of copper alloy or the like are implanted, the other end of the movable contact 24A slightly bent is elastically contacted with the fixed contact 24B, and the plurality of fixed contacts 24B are electrically connected via the movable contact 24A. Connected to each other, a switch contact 24 is formed.

  The switch contact 24 is connected to the wiring pattern of the wiring board 5 by an arm portion (not shown) extending from the fixed contact 24B, the connection side with the switching means 7 is connected to the battery connection terminal 4A, and the control means 8 is connected. Are connected to the ignition switch connection terminal 4B, the detection means 6 and the control means 8 are connected to the ground connection terminal 4C, and the switching means 7 is connected to the stop lamp 25 connection terminal 4D. ing.

  Further, 9 is a coiled return spring, 10 is a cover made of insulating resin that covers the opening on the upper surface of the case 21, and the return spring 9 is slightly bent between the lower surface of the operating body 22 and the bottom surface of the case 21. The vehicular switch 27 is configured by mounting and urging the actuating body 22 upward, and the upper end of the operation shaft 22A of the actuating body 22 projecting upward from the hollow cylindrical portion 10A at the center of the upper surface of the cover 10.

  In the vehicular switch 27 configured as described above, as shown in the side view of the main part of FIG. 4, the operating shaft 22A of the operating body 22 is pressed by the arm 13A in general before the brake pedal 13 of the automobile. The plurality of terminals 4 that are mounted in a state and protrude from the bottom surface of the case 21 are connected to a stop lamp 25 such as a plurality of light-emitting diodes, an ignition switch, a battery, and the like by a connector 14 and lead wires.

  In other words, when the ignition switch is turned on and the brake pedal 13 is not depressed when the engine is started, the operation shaft 22A of the operating body 22 is pressed downward while bending the return spring 9, as shown in the sectional view of FIG. The magnet 3 mounted on the left side of the operating body 22 also moves downward, the center of the detection means 6 arranged opposite to the center of the magnet 3 is greatly separated, and the magnetism of the magnet 3 detected by the detection means 6 is weak. It is in a state.

  The control means 8 connected to the detection means 6 closes the switching means 7 when the magnetic flux density detected by the detection means 6 is greater than or equal to a predetermined value, and the magnetic flux density is predetermined. When the value is equal to or smaller than the value, the switching means 7 is opened, so that the switching means 7 is open when the operating body 22 is pressed.

  In addition, the movable contact 24A mounted on the right side surface of the operating body 22 also moves downward, elastically contacts the right inner wall of the case 21 away from the plurality of fixed contacts 24B, and is provided between the battery and the control means 8. Since the switch contact 24 is also electrically disconnected, the stop lamp 25 is turned off.

  When the brake pedal 13 is depressed, the arm 13A is separated from the operation shaft 22A and the pressing force is removed, so that the operating body 22 is moved upward by the elastic return force of the return spring 9, and as shown in FIG. The magnet 3 mounted on the left side of the actuating body 22 and the detection means 6 face each other, and the movable contact 24A mounted on the right side of the actuating body 22 is elastically contacted with a plurality of fixed contacts 24B. It is in an electrically connected state.

  That is, power is supplied to the detection means 6 and the control means 8 from the terminal 4B for connecting the ignition switch and the terminal 4A for connecting the battery via the switch contact 24, and the magnet 3 and the detection means 6 face each other. Then, since the magnetism of the magnet 3 detected by the detection means 6 is strong, the control means 8 switches the switching means 7 to the closed state, and the stop lamp 25 is lit.

  In the operation of the brake pedal 13 as described above, for example, when the vehicle is stopped at a certain place such as a succeeding vehicle, the ignition switch is turned off, and the engine is stopped, the detection means 6 and the control means 8 When no power is supplied from the switch connection terminal 4B and the brake pedal 13 is not depressed, the switch contact 24 is also electrically disconnected. Even power is not supplied.

  That is, when the ignition switch is turned off and the brake pedal 13 is not depressed, no current flows through the vehicle switch 27, the battery is not consumed, and the power is saved. When the brake pedal is depressed in this state, as described above, the operating body 22 moves upward by the elastic return force of the return spring 9, and the switch contact 24 provided between the battery and the control means 8 is moved. It is in an electrically connected state.

  As a result, power is supplied from the battery connection terminal 4A to the detection means 6 and the control means 8 via the switch contact 24, and at the same time, the magnetism of the magnet 3 that moves upward and faces the detection means 6 is controlled. 8, the switching means 7 is switched to the closed state, and the stop lamp 25 is lit.

  That is, when the vehicle is stopped and the ignition switch is turned off and the engine is stopped, no current flows through the vehicle switch 27, the battery is not consumed, and power saving is achieved. When the brake pedal 13 is depressed in this state, the switch contact 24 is electrically connected / disconnected, power is supplied to the detection means 6 and the control means 8, and the stop lamp 25 is surely turned on. ing.

  Further, at this time, the position of the magnet 3 mounted on the left side of the actuating body 22 and the movable contact 24A mounted on the right side is faster than the switching means 7 when connected, and slower than the switching means 7 when disconnected. Electrical contact and separation are performed.

  That is, the switching means 7 is closed after the switch contact 24 is connected, and the switch contact 24 is disconnected after the switching means 7 is opened. The power is always supplied to the detection means 6 and the control means 8 via the switch contact 24.

  As described above, according to the present embodiment, the control means 8 that opens and closes the switching means 7 according to the magnetism of the magnet 3 is connected to the ignition switch and is electrically connected and disconnected by the vertical movement of the operating body 22. By providing the switch contact 24 between the battery and the control means 8, power saving can be achieved, and a vehicle switch that can reliably turn off the stop lamp 25 can be obtained.

  Further, the switch contact 24 is electrically connected and disconnected faster than the switching means 7 when connected and slower than the switching means 7 when disconnected, so that the switch contact 24 can be opened and closed while the switching means 7 is opened and closed. Thus, since the power is always supplied to the detection means 6 and the control means 8, the stop lamp 25 can be reliably turned off and on.

  In the above description, the detecting means 6 is arranged at the upper position, the switching means 7 is closed when the operating body 22 is in the upper position and the magnetism is strong, and the switching means 7 is opened in the lower position when the magnetism is weak. In contrast to this, the detection means 6 is disposed below, and when the operating body 22 is in the upper position, the magnetism is weakened, and in the lower position, the magnetism is strengthened. The present invention can be implemented even if the control means 8 opens and closes the switching means 7 according to the above.

  In the above description, the switch contact 24 is described in which the movable contact 24A is mounted and fixed on the right side surface of the operating body 22, and the movable contact 24A is elastically contacted with the plurality of fixed contacts 24B. Various switch contacts, such as those using a reed switch that makes electrical contact and separation by the magnetism of the magnet 3 mounted on the surface, and those that use a piezoelectric member that makes electrical contact and separation by pressing the operating body 22 Can also be implemented.

  Further, in the above description, the push operation type vehicle switch operated mainly by the brake pedal has been described. However, the switch used for other functions such as opening and closing of the door, or the operating body is swung. The present invention can also be implemented in a switch of an operation method other than the pressing operation such as sliding in parallel.

  The switch for a vehicle according to the present invention can save power and can obtain a stop lamp that can be reliably turned off and off, and is useful mainly for controlling the turning off and on of a stop lamp of an automobile.

Sectional drawing of the switch for vehicles by one embodiment of this invention Same circuit diagram Cross section during the same operation Side view of the main part of the brake pedal Sectional view of a conventional vehicle switch

Explanation of symbols

3 Magnet 4, 4A, 4B, 4C, 4D Terminal 5 Wiring board 6 Detection means 7 Switching means 8 Control means 8A Differential amplifier 8B Voltage detector 9 Return spring 10 Cover 10A Hollow cylinder part 13 Brake pedal 13A Arm 14 Connector 21 Case 22 Actuator 22A Operation shaft 24 Switch contact 24A Movable contact 24B Fixed contact 25 Stop lamp 27 Vehicle switch

Claims (2)

A substantially box-shaped case, an operating body accommodated in the case so as to be movable up and down, a spring for biasing the operating body upward, a magnet mounted on the operating body, and the magnetism of the magnet is detected. And a control means for opening and closing the switching means according to the magnetism of the magnet, connected to the detection means. A vehicle switch having a switch contact between the battery and the control means, wherein the switch contact is connected to the ignition switch and electrically connected and disconnected by the vertical movement of the operating body. 2. The vehicle switch according to claim 1, wherein the switch contacts are electrically connected and disconnected faster than the switching means when connected and slower than the switching means when disconnected.

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