JP4952156B2 - Vehicle switch - Google Patents

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 push switch for a vehicle will be described with reference to FIGS.

  FIG. 4 is a cross-sectional view of a conventional vehicle switch. In FIG. 4, 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 left side 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 vehicular switch 12 is configured by being mounted and biasing the operating body 2 upward, and the upper end of the operating body 2 protruding upward from the hollow cylinder 11 fixed to the center of the upper surface of the cover 10.

  The vehicle switch 12 configured as described above is generally mounted in front of the brake pedal 13 of the automobile in a state where the operating body 2 is pressed by the arm 13A, as shown in the side view of the main part of FIG. In addition, a plurality of terminals 4 protruding 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, when the brake pedal 13 is not depressed, the operating body 2 is pressed downward while bending the return spring 9, and the magnet 3 mounted on the left side surface of the operating body 2 also moves downward. The center of the detection means 6 arranged opposite to the center 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. Yes.

  When the brake pedal 13 is stepped on, as shown in FIG. 3, the arm 13 </ b> A rotates, the operating body 2 moves upward by the elastic return force of the return spring 9, and the operating body 2 returns to a predetermined position. Then, since the magnetism of the magnet 3 detected by the detection means 6 becomes strong and exceeds a predetermined value, the control means 8 switches the switching means 7 to the closed state, and the stop lamp is turned on.

  Further, when the brake pedal 13 is further depressed, the arm 13A is separated from the upper end of the operating body 2 and the pressing force is removed, so that the operating body 2 is further moved upward by the elastic return force of the return spring 9 and the operating body. As shown in FIG. 4, the magnet 3 attached to 2 also moves upward so that the magnet 3 and the detection means 6 face each other, and the stop lamp is kept lit. It was a thing.

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 above conventional vehicle switch, the magnet 3 is mounted on the lower left side of the operating body 2, and the detection means 6 facing the magnet 3 is also formed on the wiring board 5 on the left side wall of the case 1. Since the detecting means 6 is particularly susceptible to the influence of magnetism from the outside in the left direction, and the position of the magnet 3 is likely to be displaced due to inclination or rattling when the operating body 2 is operated, the switching means 7 is opened and closed. There was a problem that an error was likely to occur in the operation.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a vehicle switch that can be reliably operated with little error.

In order to achieve the above object, the present invention provides 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, and the operating body. And a wiring board that is housed in the case and detects the magnetism of the magnet, and a control board that is connected to the detection means and opens and closes the switching means. The wiring board mounted on the inner wall of the gap formed in the lower intermediate part of the operating body, and arranged so that the detecting means is arranged in the vicinity of the center of the case facing the magnet along the vertical movement direction of the operating body. The detecting means is arranged so that the operating body covers the periphery of the detecting means, and the magnetism of the magnet is different between the upper position and the lower position. Depending on the above This is a vehicle switch that opens and closes the chucking means, and since the detection means is arranged at the center of the case, there is no bias and it is difficult to be influenced by the magnetism evenly to the outside. Is attached to the middle part of the operating body, so that the displacement of the magnet due to the tilting or rattling of the operating body is reduced, and there can be obtained a vehicle switch that can be reliably operated with little error. It has an action.

  As described above, according to the present invention, it is possible to obtain an advantageous effect that it is possible to realize a vehicle switch that can be reliably operated with little error.

  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 cross-sectional view of a vehicle switch according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, and in FIG. A case 22 made of insulating resin is a substantially cylindrical and similarly insulating resin working body. The working body 22 is accommodated in the case 21 so as to be movable up and down. 22A is formed, and the magnet 3 is attached to the inner wall of the gap 22A.

  Reference numeral 4 denotes a terminal made of a conductive metal such as a copper alloy, and 5 denotes a wiring board in which a plurality of wiring patterns (not shown) are formed on the left and right sides, and the wiring board 5 is disposed at substantially the center of the case 21. 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 21.

  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 a metal or insulating resin cover that covers the opening on the upper surface of the case 21, and the return springs 9 mounted on the left and right are between the lower surface of the operating body 22 and the bottom surface of the case 21. The switch 25 is mounted in a slightly bent state to urge the operating body 22 upward, and the upper end of the operating body 22 protrudes upward from the hollow cylinder 11 fixed to the center of the upper surface of the cover 10. It is configured.

  The vehicle switch 25 configured as described above is generally mounted in front of the brake pedal 13 of the automobile in a state where the operating body 22 is pressed by the arm 13A, as shown in the side view of the main part in FIG. At the same time, the plurality of terminals 4 protruding from the bottom surface of the case 21 are connected to a stop lamp, an ignition switch, a battery, and the like by the connector 14 and lead wires.

  That is, in a state where the brake pedal 13 is not depressed, the operating body 22 is pressed downward while bending the left and right return springs 9, and the magnet 3 attached to the lower intermediate portion of the operating body 22 also moves downward. The center of the magnet 3 and the center of the detection means 6 arranged opposite to the magnet 3 are 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 22 is pressed, the switching means 7 is opened and the stop lamp is turned off. Yes.

  When the brake pedal 13 is stepped on, as shown in FIG. 3, the arm 13 </ b> A rotates, and the operating body 22 moves upward by the elastic return force of the left and right return springs 9. Since the magnetism of the magnet 3 detected by the detection means 6 becomes stronger and exceeds a predetermined value, the control means 8 switches the switching means 7 to the closed state and the stop lamp is turned on.

  Further, when the brake pedal 13 is further depressed, the arm 13A is separated from the upper end of the operating body 22 and the pressing force is removed, so that the operating body 22 is further moved upward by the elastic return force of the return spring 9 and the operating body. As shown in FIG. 1, the magnet 3 attached to 22 is also moved upward so that the centers of the magnet 3 and the detection means 6 face each other, and the stop lamp is kept lit. Has been.

  At this time, the detection means 6 for detecting the magnetism of the magnet 3 is formed on the wiring board 5 disposed substantially at the center of the case 21, and a gap 22 </ b> A is formed in the lower middle portion of the operating body 22. Since the operating body 22 covers the periphery of the detection means 6, the magnetism from the outside of the switch is not biased and hardly affected by the magnetism almost uniformly. It is difficult for errors to occur in magnetic detection.

  In addition, since the magnet 3 is attached to the lower intermediate portion of the operating body 22, the magnet 3 is attached to the side surface of the operating body 22 even when the operating body 22 is tilted or rattling. Compared to this state, the positional deviation of the magnet 3 is reduced, and an error in the opening / closing timing of the switching means 7 is suppressed, so that a reliable operation can be performed.

  As described above, according to the present embodiment, the magnet 3 is mounted on the lower intermediate portion of the operating body 22, and the detecting means 6 is disposed near the center of the case 21 facing the magnet 3. Since the case 21 is arranged at substantially the center, it is not biased and is hardly affected by the magnetism evenly to the outside, and the magnet 3 is attached to the intermediate portion of the actuating body 22. Thus, the displacement of the magnet 3 due to the inclination or rattling of the magnet 22 is reduced, and a vehicle switch that can be reliably operated with little error can be obtained.

  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, a push-operated vehicle switch operated mainly by a brake pedal has been described. However, the present invention can also be applied to a vehicle switch used for other functions such as opening and closing of a door. is there.

  The vehicle switch according to the present invention can be obtained with little error and capable of reliable operation, and is useful mainly for extinction control of a stop lamp of an automobile.

Sectional drawing of the switch for vehicles by one embodiment of this invention Exploded perspective view Side view of the main part of the brake pedal Sectional view of a conventional vehicle switch

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Magnet 4 Terminal 5 Wiring board 6 Detection means 7 Switching means 8 Control means 9 Return spring 10 Cover 11 Hollow cylinder 13 Brake pedal 13A Arm 14 Connector 21 Case 22 Actuator 22A Gap part 25 Vehicle switch

Claims (1)

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 a housing accommodated in the case An air gap formed in a lower intermediate portion of the operating body, comprising a wiring board on which detection means for detecting magnetism of the magnet and control means connected to the detection means for opening and closing the switching means are formed. mounted on the inner wall of the section, the detection means is formed on the arranged the wiring board along the vertical movement direction of the operating body in the vicinity of the center of the case opposite to the magnet, the surrounding of the detection means The vehicle is configured to cover the operating body and arrange the detection means so that the magnetism of the magnet is different between the upper position and the lower position, and the control means opens and closes the switching means according to the strength of the magnetism. Sui Ji.

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