JP2009140850A - Vehicle switch - Google Patents

Abstract

An object of the present invention is to provide a vehicle switch that is used mainly for various controls of automobiles and that can prevent misalignment between a magnet and a detection means and can be reliably operated.
A movable contact 31A, a fixed contact 29A, and a plurality of switch contacts formed of a movable contact 31B and a fixed contact 29B are provided on both left and right sides of an operating body 22 housed in a case 21 so as to be movable up and down. As a result, the balance of the force applied to the operating body 22 by the plurality of switch contacts on both the left and right sides is balanced and the inclination of the operating body 22 is reduced, so that the positional deviation between the magnet 23 and the detecting means 26 is prevented, and the error is small and reliable. The switch for vehicles which can be operated can be obtained.
[Selection] Figure 1

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 switch will be described with reference to FIGS.

  FIG. 6 is a sectional view of a conventional vehicle switch. In FIG. 6, reference numeral 1 denotes a case made of a substantially box-shaped insulating resin with an opening on the upper surface, and 2 an operating body housed 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 movable contact made of a conductive metal thin plate such as a copper alloy, 10 is a fixed contact such as a copper alloy, and a plurality of fixed contacts 10 are planted on the right inner side wall of the case 1, and the lower end is downward from the bottom of the case 1. The upper end of the movable contact 9 is mounted and fixed on the lower right side of the operating body 2, and the lower end of the movable contact 9 in a slightly bent state is elastically contacted with the right inner wall of the case 1 to form a switch contact. .

  Further, 11 is a coil-shaped spring, 12 is a cover made of insulating resin that covers the opening on the upper surface of the case 1, and the spring 11 is mounted in a slightly bent state between the lower surface of the operating body 2 and the bottom surface of the case 1. Thus, the operating body 2 is urged upward, and the upper end of the operation shaft portion 2A of the operating body 2 protrudes upward from the hollow cylindrical portion 12A at the center of the upper surface of the cover 12 to constitute the vehicle switch 13.

  As shown in the side view of the main part of FIG. 5, the vehicle switch 13 configured as described above is generally mounted in front of the brake pedal 41 of the automobile in a state where the upper end of the operating body 2 is pressed by the arm 41A. In addition, a plurality of terminals 4 and fixed contacts 10 projecting from the bottom surface of the case 1 are connected to a stop lamp, an ignition switch, a battery, a vehicle electronic circuit (not shown), and the like by a connector 42 and lead wires, respectively. .

  That is, in a state where the brake pedal 41 is not depressed, the operating body 2 is pressed downward while bending the spring 11, 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.

  In a state where the operating body 2 is pressed, the movable contact 9 mounted on the right side of the operating body 2 also moves downward, the lower end elastically contacts the fixed contact 10, and the plurality of fixed contacts 10 are movable contacts 9. Each function controlled by the electronic circuit of the vehicle, for example, a so-called auto-cruise device that keeps the traveling speed of the vehicle constant regardless of the depression of the accelerator pedal, etc. It is in an operating state.

  When the brake pedal 41 is depressed, the arm 41A is separated from the upper end of the operating shaft portion 2A of the operating body 2 and the pressing force is removed, so that the operating body 2 is moved by the elastic return force of the spring 11 as shown in FIG. While moving upward, the magnet 3 mounted on the operating body 2 also moves 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 stronger. The means 8 switches the switching means 7 to the closed state, and the stop lamp is lit.

  At the same time, the movable contact 9 mounted on the operating body 2 is also elastically slid upward, the lower end of the movable contact 9 is elastically contacted with the right inner wall of the case 1, and the plurality of fixed contacts 10 are electrically disconnected. Therefore, the auto-cruise control of the vehicle is stopped.

  That is, by operating the brake pedal 41, the operating body 2 of the vehicle switch 13 is moved up and down, the stop lamp is turned off by the magnet 3 and the detecting means 6 on the left side of the operating body 2, and the movable contact 9 on the right side is fixed. The contact 10 is configured to control the operation and stop of the auto-cruise device, respectively.

As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2006-92987 A

  However, in the above conventional vehicle switch, the movable contact 9 mounted on the lower right side of the operating body 2 is elastically contacted with the right inner wall of the case 1 or the fixed contact 10 in a slightly bent state to form a switch contact. Since a force in the left direction is always applied to the lower end of the operating body 2, the operating body 2 is tilted although this is a slight gap between the outer periphery of the operation shaft portion 2A and the inner periphery of the hollow cylindrical portion 12A. As a result, the position of the magnet 3 mounted on the left side surface of the operating body 2 with respect to the detecting means 6 is displaced, and there is a problem that an error occurs in the magnetic detection of the magnet 3 due to the vertical movement of the operating body 2.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a vehicular switch that can prevent a positional deviation of the magnet 3 with respect to the detection means 6 and can be reliably operated.

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

  According to the first aspect of the present invention, a vehicle switch is configured by providing a plurality of switch contacts on both the left and right side surfaces of an operating body accommodated in a case so as to be movable up and down. The balance of the force applied to the operating body by the multiple switch contacts is balanced, and the inclination of the operating body is reduced, so that the position of the magnet and the detecting means can be prevented, and a vehicle switch capable of reliable operation with little error can be obtained. Has the effect of being able to

  The invention according to claim 2 is the invention according to claim 1, wherein one of the plurality of switch contacts is connected to the detection means. For example, when the operating body is pressed, By cutting off the power supply to the detection means, there is an effect that power saving can be achieved.

  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 prevent a positional deviation between the magnet and the detection means and can be reliably operated.

  Embodiments of the present invention will be described below 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 thereof, and 21 is an insulating resin such as polybutylene terephthalate or ABS having a top opening and a substantially box shape A case 22 made of an insulating resin is substantially U-shaped, and is housed in the case 21 so as to be movable up and down. A holding part 22B is formed, and a magnet 23 is mounted in the holding part 22B with the north or south pole facing the gap 22A.

  Reference numeral 24 is a terminal made of a conductive metal such as a copper alloy, 25 is a wiring board having a plurality of wiring patterns (not shown) formed on the front and rear surfaces, and the wiring board 25 is located in the gap 22A at the substantially center of the case 21. The upper ends of the plurality of terminals 24 are connected to the wiring pattern of the wiring board 25 by soldering or the like, and the lower ends of the terminals 24 protrude downward from the bottom surface of the case 21.

  In addition, a detection means 26 such as a Hall element and a switching means 27 such as a power transistor are formed on the surface of the wiring board 25 facing the magnet 23, and a control means 28 is formed by an FET, a plurality of fixed resistors, and the like. The control means 28 is connected to the detection means 26 and the switching means 27.

  Further, 29A and 29B are fixed contacts made of a copper alloy or the like, and are implanted in the insulating resin terminal boards 30A and 30B by insert molding or the like, and the terminal boards 30A and 30B are connected to the left and right sides of the wiring board 25 by screws or the like. The plurality of fixed contacts 29A are connected to the upper ends of the detection means 26 and the plurality of terminals 24 by soldering or the like, and the plurality of fixed contacts 29B are connected to the upper ends of the terminals 24, respectively.

  31A and 31B are movable contacts made of a conductive metal thin plate such as a copper alloy, and their lower ends are respectively mounted and fixed to the left and right side surfaces of the holding portion 22B of the operating body 22, and the movable contacts are slightly bent. The upper end of 31A is elastically contacted with the fixed contact 29A and the upper end of the movable contact 31B is elastically contacted with the upper end of the terminal plate 30B, respectively, and a plurality of switch contacts are formed on the left and right side surfaces of the operating body 22.

  Reference numeral 32 denotes a substantially cylindrical operation shaft made of an insulating resin, 33 denotes a coiled spring, the lower end of the operation shaft 32 abuts on the upper end of the operating body 22, and the plurality of springs 33 are holding portions 22 </ b> B around the operating body 22. Is mounted in a slightly bent state between the bottom surface of the case 21 and the bottom surface of the case 21 to urge the operating body 22 and the operation shaft 32 upward.

  Further, reference numeral 34 denotes an insulating resin cover. The cover 34 covers the opening on the upper surface of the case 21, and the operation shaft 32 is inserted through the hollow cylindrical portion 34A in the center of the upper surface of the cover 34 so as to be movable up and down. A vehicle switch 37 is configured to protrude upward from the cylindrical portion 34A.

  When manufacturing such a vehicle switch 37, first, the detection means 26, the switching means 27, and the control means 28 are formed on the wiring board 25 by mounting or the like, and then a plurality of right and left sides of the wiring board 25 are formed. The terminal plates 30A and 30B on which the fixed contacts 29A and 29B are formed are fixed by screws or the like, and a plurality of fixed contacts 29A and 29B, a plurality of terminals 24, etc. are connected by soldering or the like.

  Then, the wiring board 25 is inserted into the case 21 from above, the lower end of the terminal 24 protrudes downward from the bottom surface of the case 21, and is fixed by caulking, bonding, or the like, and then the movable contacts 31A and 31B are mounted on the left and right side surfaces. The fixed operating body 22 is inserted between the terminal plates 30A and 30B while bending the plurality of springs 33 between the lower surface of the operating body 22 and the bottom surface of the case 21.

  Further, the cover 34 with the operation shaft 32 inserted through the hollow cylindrical portion 34A is placed on the upper surface of the case 21, and the convex portions and the concave portions on the outer periphery of the case 21 and the cover 34 are fitted to complete the vehicle switch 37.

  When the operating body 22 is inserted into the case 21, the movable contacts 31A and 31B are mounted and fixed at the lower left and right sides of the operating body 22 and the upper ends are opened outward. By simply inserting the operating body 22 between the terminal plates 30A and 30B, the movable contacts 31A and 31B can be smoothly mounted in the case 21 while being bent inward.

  That is, contrary to the above, in order to prevent the deformation of the movable contacts 31A and 31B, as in the case where the upper ends of the movable contacts 31A and 31B are fixed to the operating body 22 and the lower ends are opened, It is not necessary to insert them while bending them with a jig or the like, so that assembly can be easily performed.

  As shown in the side view of the main part of FIG. 5, the vehicle switch 37 configured in this way is generally mounted in front of the brake pedal 41 of the automobile in a state where the upper end of the operation shaft 32 is pressed by the arm 41A. At the same time, a plurality of terminals 24 protruding from the bottom surface of the case 21 are connected to a stop lamp, an ignition switch, a battery, a vehicle electronic circuit (not shown), and the like by connectors 42 and lead wires.

  That is, when the brake pedal 41 is not depressed, the upper end of the operating shaft 32 is pressed by the arm 41A and the operating body 22 is pressed downward while bending the spring 33, as shown in the sectional view of FIG. The magnet 23 attached to the lower intermediate portion of the operating body 22 also moves downward, and the center of the magnet 23 and the center of the detection means 26 arranged opposite to the magnet 23 are in a state of being greatly separated.

  Further, when the operating body 22 is pressed, the movable contact 31A mounted on the left side surface of the operating body 22 is also elastically slid downward, and the upper end of the movable contact 31A is separated from the fixed contact 29A to the terminal plate 30A. Since they are in elastic contact, the plurality of fixed contacts 29A are electrically disconnected.

  Accordingly, in this state, the power supply to the detection means 26 connected to the battery via the fixed contact 29A is interrupted, and the magnetic detection signal of the magnet 23 is not output from the detection means 26 to the control means 28. Therefore, the switching means 27 Is open and the stop lamp is extinguished.

  On the other hand, in a state where the operating body 22 is pressed, the movable contact 31B mounted on the right side surface of the operating body 22 moves downward, the upper end elastically contacts the fixed contact 29B, and the plurality of fixed contacts 29B Since the vehicle is electrically connected via the movable contact 31B, each function controlled by the electronic circuit of the vehicle, for example, a so-called auto cruise that keeps the vehicle traveling speed constant regardless of depression of the accelerator pedal. The device or the like is in an operating state.

  When the brake pedal 41 is depressed, the arm 41A is separated from the upper end of the operating shaft 32 and the pressing force is removed, so that the operating body 22 moves upward by the elastic return force of the spring 33 as shown in FIG. The magnet 23 attached to the operating body 22 also moves upward, so that the magnet 23 and the detection means 26 face each other, and the magnetism of the magnet 23 detected by the detection means 26 becomes stronger.

  At the same time, the movable contact 31A mounted on the left side surface of the operating body 22 is also elastically slid upward, the upper end of the movable contact 31A is elastically contacted with the fixed contact 29A, and a plurality of fixed contacts 29A are connected via the movable contact 31A. Since it is in an electrically connected state, power is supplied from the battery to the detecting means 26 via the fixed contact 29A.

  The control means 28 connected to the detection means 26 closes the switching means 27 and the magnetic flux density is predetermined when the magnetic flux density detected by the detection means 26 is greater than or equal to a predetermined value. When the value is less than the value, the switching means 27 is in an open state. Therefore, when the operating body 22 is returned upward, the control means 28 switches the switching means 27 to a closed state, and the stop lamp Light.

  On the other hand, in a state where the operating body 22 is restored, the movable contact 31B mounted on the right side surface of the operating body 22 moves upward, and the upper end is separated from the fixed contact 29B and is elastically contacted with the upper end of the terminal plate 30B. Since the plurality of fixed contacts 29B are electrically disconnected, the auto-cruise control of the vehicle is stopped.

  That is, by operating the brake pedal 41, the operating body 22 of the vehicle switch 37 is moved up and down to fix the magnet 23 and the detection means 26 in the lower intermediate portion of the operating body 22 and the movable contact 31 </ b> A on the left side surface of the operating body 22. The contact lamp 29A controls the stop lamp to be turned off and on, and the movable cruise contact 31B and the fixed contact 29B on the right side of the operating body 22 control the operation and stop of the auto cruise device.

  When the operating body 22 moves up and down in this way, a plurality of switch contacts are formed on the left and right sides of the operating body 22 by the movable contact 31A and the fixed contact 29A, and the movable contact 31B and the fixed contact 29B. Therefore, even when there is a slight gap around the operating body 22 and the operating shaft 32, the vertical movement is performed with almost no inclination of the operating body 22.

  That is, the operating body is constituted by the movable contact 31A that elastically contacts the fixed contact 29A or the terminal plate 30A in a slightly bent state on both the left and right side surfaces of the operating body 22, and the movable contact 31B that elastically contacts the fixed contact 29B or the terminal plate 30B. Since the balance of the force applied to 22 is balanced and the inclination of the operating body 22 is reduced, the positional deviation between the magnet 23 and the detecting means 26 is prevented, and a reliable operation can be performed with little error.

  Further, one of the plurality of switch contacts, for example, as described above, a switch contact formed by the movable contact 31A and the fixed contact 29A is connected to the detection means 26, and the power is supplied from the battery to the detection means 26 via the fixed contact 29A. When the operating body 22 is pressed, the power supply to the detection means 26 can be cut off by this switch contact, so that power saving can be achieved.

  That is, the brake pedal 41 is not depressed, the operating body 22 is pressed, the magnet 23 attached to the lower intermediate portion of the operating body 22 moves downward, and the center from the detection means 26 is greatly separated. In a state where the detection unit 26 cannot detect the magnetism of the magnet 23, the battery consumption can be reduced by cutting off the power supply to the detection unit 26.

  The operating body 22 of the switching means 27 controlled by the control means 28 according to the magnetism detected by the movable contact 31A and the fixed contact 29A, the movable contact 31B and the fixed contact 29B, and the detection means 26 is moved up and down. It is desirable to provide each ON and OFF switching timing with respect to the moving amount as shown in the characteristic diagram of FIG.

  That is, it is preferable that the difference L between the moving amount L1 at which the movable contact 31B and the fixed contact 29B are turned off and the moving amount L3 at which the switching means 27 is turned on is set to a somewhat large dimension that is a predetermined amount or more. The movement amount L2 at which the fixed contact 29A is turned on may be before the movement amount L3, but if possible, it can be provided between the movement amounts L1 and L3 to turn off the stop lamp as described above, Can be reliably operated and stopped.

  In the above description, the two switch contacts on the left and right side surfaces of the operating body 22 are described as being ON at the return position of the operating body 22 and ON at the pressing position of the operating body 22. The switch contact is configured to be turned on at the return position and used to control vehicle equipment other than the auto cruise device, or it is impossible to achieve the above power saving. The present invention can be implemented even if both switch contacts are configured to be ON at the pressed position.

  Thus, according to the present embodiment, the movable contact 31A and the fixed contact 29A, and the movable contact 31B and the fixed contact 29B are formed on the left and right side surfaces of the operating body 22 accommodated in the case 21 so as to be movable up and down. By providing a plurality of switch contacts, the balance of the force applied to the operating body 22 by the plurality of switch contacts on the left and right side surfaces is balanced, and the inclination of the operating body 22 is reduced. It is possible to obtain a vehicular switch that can be prevented and that can be reliably operated with little error.

  In the above description, a configuration is described in which the operating body 22 accommodated in the case 21 so as to be movable up and down and the operation shaft 32 inserted in the hollow cylinder portion 34A of the cover 34 so as to be movable up and down are provided separately. However, the present invention can be implemented even with a configuration in which these are integrally formed.

  Further, the configuration in which the switching means 27 and the control means 28 are formed on the wiring board 25 in the case 21 has been described. However, these may be provided in the electronic circuit of the vehicle and only the detection means 26 may be formed on the wiring board 25. Good.

  Further, in the above description, the push operation type vehicle switch operated mainly by the brake pedal 41 and turning off and off the stop lamp has been described. However, in the vehicle switch used for other functions such as opening and closing of the door. However, it is possible to implement the present invention.

  The switch for a vehicle according to the present invention can prevent misalignment between the magnet and the detection means and can be operated reliably, and is useful mainly for controlling the turn-off of a stop lamp of an automobile.

Sectional drawing of the switch for vehicles by one embodiment of this invention Exploded perspective view Sectional view during pressing operation Switching timing characteristics chart Side view of the main part of the brake pedal Sectional view of a conventional vehicle switch

Explanation of symbols

DESCRIPTION OF SYMBOLS 21 Case 22 Actuator 22A Gap part 22B Holding part 23 Magnet 24 Terminal 25 Wiring board 26 Detection means 27 Switching means 28 Control means 29A, 29B Fixed contact 30A, 30B Terminal plate 31A, 31B Movable contact 32 Operation shaft 33 Spring 34 Cover 34A Hollow cylinder part 37 Vehicle switch 41 Brake pedal 41A Arm 42 Connector

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. A vehicle switch comprising: a detecting means configured to perform switching and a switch contact formed on a side surface of the operating body, wherein the switch contact is provided on both left and right side surfaces of the operating body. The vehicle switch according to claim 1, wherein one of the plurality of switch contacts is connected to the detection means.

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