JP2021121518A - Vehicle control system - Google Patents

Abstract

To provide a vehicle control system that controls the drive of a vehicle by utilizing a push switch provided with a distortion sensor.SOLUTION: A vehicle control system 100 includes: a push switch 1 which includes a switching mechanism 3 that can transition from an OFF state to an ON state when depressing force is applied thereto, and a distortion sensor 6 that detects further applied depressing force when the switching mechanism 3 is in the ON state; a drive unit 10 which is electrically connected to the switching mechanism 3, drives a vehicle when the switching mechanism 3 is in the OFF state, and cancels the driving of the vehicle when the switching mechanism 3 is in the ON state; and a brake unit 60 which is electrically connected to the distortion sensor 6 and which decelerates the vehicle in accordance with the depressing force further applied when the switching mechanism 3 is in the ON state.SELECTED DRAWING: Figure 1

Description

The present invention generally relates to a vehicle control system, and more specifically to a vehicle control system that controls the drive of a vehicle by using a push switch including a strain sensor.

Generally, a vehicle control system for controlling the drive of a vehicle such as a passenger car or a truck utilizes an accelerator pedal and a brake pedal provided at the driver's feet. In such a vehicle control system, when the driver depresses the accelerator pedal, the throttle valve opens according to the pressing force applied to the accelerator pedal by the driver, and the vehicle is driven. On the other hand, when the driver depresses the brake pedal, the brake is applied according to the pressing force applied to the brake pedal by the driver, and the vehicle decelerates or stops. A vehicle control system using such an accelerator pedal and a brake pedal has been used for many years because it enables intuitive driving of the vehicle.

However, vehicle control systems that rely on the driver's operation of the accelerator and brake pedals are unsafe in some situations. For example, if the driver mistakenly presses the brake pedal and the accelerator pedal, a serious traffic accident can occur. In addition, if the driver loses consciousness while driving the vehicle, even if the companion is sitting in the passenger seat or the back seat, the companion operates the brake pedal at the driver's feet. Vehicles cannot be stopped and serious traffic accidents can occur.

In addition, with the aging of the population in recent years, the aging of drivers is also advancing. Due to deterioration of judgment and physical ability due to aging, there are many situations that can lead to serious traffic accidents such as the above-mentioned mistake of pressing the brake pedal and accelerator pedal and loss of consciousness of the driver while driving. is expected. As described above, there are situations that cannot be dealt with by the conventional vehicle control system using the accelerator pedal and the brake pedal provided at the driver's feet. Therefore, there is a need for a vehicle control system different from the conventional vehicle control system using the accelerator pedal and the brake pedal.

Further, with the development of electric vehicles and automatic driving in recent years, electric vehicle control systems that control the driving of vehicles by using electric signals have become common. For example, Patent Document 1 discloses an electric vehicle control system that utilizes an electric actuator and an electric brake system mounted on a vehicle. However, even in an electric vehicle control system as in Patent Document 1, in order for the driver to control the driving of the vehicle by himself / herself instead of automatic driving, the driver needs to operate the accelerator pedal or the brake pedal with his / her foot. Yes, it is not possible to meet the above needs.

Japanese Unexamined Patent Publication No. 2019-134551

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a vehicle control system that controls the drive of a vehicle by using a push switch provided with a strain sensor.

Such an object is achieved by the following inventions (1) to (9).
(1) A vehicle control system for controlling the drive of a vehicle.
A switching mechanism that can switch from an off state to an on state by applying a pressing force, a strain sensor for detecting the pressing force further applied when the switching mechanism is in the on state, and a strain sensor. With a push switch and
It is electrically connected to the switching mechanism of the push switch to drive the vehicle when the switching mechanism is in the off state, and further, the vehicle when the switching mechanism is in the on state. With a drive unit configured to release the drive of
A brake unit electrically connected to the strain sensor of the push switch and configured to decelerate the vehicle in response to the pressing force further applied while the switching mechanism is in the on state. A vehicle control system characterized by including,.

(2) The push switch further includes a case having an upper surface, a lower surface, and a storage recess formed on the upper surface side.
The switching mechanism is provided in the storage recess of the case.
The strain sensor is provided on the lower surface of the case, and detects the strain of the case caused by the pressing force further applied while the switching mechanism is in the ON state. The vehicle control system according to (1) above, wherein the pressing force further applied when the switching mechanism is in the ON state is detected.

(3) The switching mechanism is
With the central contact provided in the storage recess of the case,
In the storage recess of the case, an outer contact provided apart from the central contact,
In the storage recess of the case, a first position is arranged above the central contact and the outer contact so that the central contact and the outer contact are in a non-conducting state, and the central contact and the outer contact A dome-shaped movable contact that can be displaced between the second position and the second position that makes the state conductive,
The above (including a disk-shaped pressing member provided above the movable contact and displaces the movable contact from the first position to the second position by pressing the movable contact downward. The vehicle control system according to 2).

(4) The movable contact contacts the outer contact at both the first position and the second position.
When the movable contact takes the first position, it does not come into contact with the central contact, thereby enabling the off state of the switching mechanism in which the central contact and the outer contact are not conducting. Further, the movable contact contacts the central contact when taking the second position, thereby enabling the on state of the switching mechanism in which the central contact and the outer contact are conducting. The vehicle control system according to (3) above.

(5) The vehicle control system according to (3) or (4) above, wherein the strain sensor faces the central contact and the outer contact of the switching mechanism via the case.

(6) The vehicle control system according to any one of (1) to (5) above, wherein the push switch is provided on the steering wheel of the vehicle.

(7) The vehicle control system according to any one of (1) to (5) above, wherein the push switch is provided on the dashboard of the vehicle.

(8) The brake unit includes a brake lamp.
The vehicle control system according to any one of (1) to (7) above, wherein the brake unit is configured to light the brake lamp when the vehicle is decelerating.

(9) The brake unit includes a motor driven by the output from the strain sensor, a brake piston driven by the motor, and a brake pad pressed against the disc rotor of the vehicle by the pressure from the brake piston. The vehicle control system according to any one of (1) to (8) above, including.

In the vehicle control system of the present invention, control of vehicle drive is realized by pressing a push switch including a strain sensor. Therefore, in the vehicle control system of the present invention, it is not necessary to use the accelerator pedal and the brake pedal to control the drive of the vehicle, and it is possible to prevent a traffic accident due to a mistake in pressing the accelerator pedal and the brake pedal. Further, since the push switch provided with the distortion sensor can be provided at any place other than the driver's feet, for example, the steering wheel or the dashboard, even if the driver loses consciousness during driving. , The companion sitting in the passenger seat or the back seat can operate the push switch, and the vehicle can be stopped safely.

It is a block diagram which shows schematic the vehicle control system which concerns on embodiment of this invention. It is a perspective view of the push switch of the vehicle control system shown in FIG. It is a top view of the push switch shown in FIG. It is a bottom view of the push switch shown in FIG. It is an exploded perspective view of the push switch shown in FIG. It is a perspective view which shows the central contact, the outer contact, and the sensor connection terminal of the push switch shown in FIG. It is a circuit diagram of the strain sensor shown in FIG. FIG. 5 is a cross-sectional view taken along the line AA in FIG. 3 of the push switch when the push switch shown in FIG. 2 is in a natural state. FIG. 5 is a cross-sectional view taken along the line AA in FIG. 3 of the push switch when a push pressure is applied to the push switch shown in FIG. It is a graph which shows the switch push amount and the sensor detection amount of the push switch shown in FIG. It is the schematic which shows the example of the installation position in the vehicle of the push switch shown in FIG.

Hereinafter, the vehicle control system of the present invention will be described based on the preferred embodiments shown in the accompanying drawings. It should be noted that each of the figures referred to below is a schematic diagram prepared for the purpose of explaining the present invention. The dimensions (length, width, thickness, etc.) of each component shown in the drawings do not necessarily reflect the actual dimensions. Further, in each figure, the same or corresponding elements are given the same reference numbers.

Hereinafter, the vehicle control system of the present invention will be described in detail with reference to FIGS. 1 to 11. FIG. 1 is a block diagram schematically showing a vehicle control system according to an embodiment of the present invention. FIG. 2 is a perspective view of a push switch of the vehicle control system shown in FIG. FIG. 3 is a top view of the push switch shown in FIG. FIG. 4 is a bottom view of the push switch shown in FIG. FIG. 5 is an exploded perspective view of the push switch shown in FIG. FIG. 6 is a perspective view showing a central contact, an outer contact, and a sensor connection terminal of the push switch shown in FIG. FIG. 7 is a circuit diagram of the strain sensor shown in FIG. FIG. 8 is a cross-sectional view taken along the line AA in FIG. 3 of the push switch shown in FIG. 2 when the push switch is in a natural state. FIG. 9 is a cross-sectional view taken along the line AA in FIG. 3 of the push switch when a pressing force is applied to the push switch shown in FIG. FIG. 10 is a graph showing a switch pressing amount and a sensor detection amount of the push switch shown in FIG. FIG. 11 is a schematic view showing an example of the installation position of the push switch shown in FIG. 2 in the vehicle.

The vehicle control system 100 according to the embodiment of the present invention shown in FIG. 1 is configured to provide a function of controlling the drive of the vehicle. The vehicle control system 100 detects a switching mechanism 3 that can switch from an off state to an on state by applying a pressing force, and a pressing force that is further applied when the switching mechanism 3 is in the on state. The push switch 1 including the distortion sensor 6 and the switching mechanism 3 of the push switch 1 are electrically connected to drive the vehicle when the switching mechanism 3 is in the off state, and further, the switching mechanism 3 The output of the drive unit 10 configured to release the drive of the vehicle, the reset circuit 20 electrically connected to the distortion sensor 6 of the push switch 1, and the reset circuit 20 when is in the ON state. It is electrically connected to the receiving amplifier 30, the AD converter 40 that receives the output of the amplifier 30, the control circuit 50 that receives the output of the AD converter 40, and the distortion sensor 6 of the push switch 1, and the switching mechanism 3 is turned on. It includes a brake unit 60 configured to decelerate the vehicle in response to a further pressing force applied during the operation.

The push switch 1 is turned on when a pressing force exceeding the operating force of the push switch 1 is applied by the user and a predetermined pushing amount is achieved, and is turned off when the pressing force applied by the user is released. It is a device having a push pressure sensing function that detects the push pressure applied by the user in the on state and provides an output according to the detected push pressure. The push switch 1 is mounted on a mounting board. The switching mechanism 3 of the push switch 1 is electrically connected to the drive unit 10 via the wiring of the mounting board, and the strain sensor 6 of the push switch 1 is electrically connected to the brake unit 60.

As shown in FIG. 1, the drive unit 10 is electrically connected to the switching mechanism 3 of the push switch 1. The drive unit 10 is configured to drive the vehicle when the switching mechanism 3 is in the off state and to release the drive of the vehicle when the switching mechanism 3 is in the on state. The brake unit 60 is electrically connected to the distortion sensor 6 of the push switch 1. The brake unit 60 is configured to decelerate the vehicle according to the pressing force detected by the strain sensor 6.

In the vehicle control system 100 of the present invention, the drive of the drive unit 10 is controlled according to the state (on / off) of the switching mechanism 3 of the push switch 1, and the drive of the brake unit 60 is further controlled by the distortion sensor 6 of the push switch 1. Controlled by the output from. Therefore, according to the vehicle control system 100 of the present invention, it is possible to control the drive of the vehicle by operating the push switch 1 without using the accelerator pedal and the brake pedal.

<Push switch 1>
First, the push switch 1 will be described in detail with reference to FIGS. 2 to 10. As shown in FIGS. 2 to 4, the push switch 1 has a low-profile rectangular parallelepiped overall shape. The push switch 1 is very small, and the user can press the push switch 1 with a fingertip.

As shown in FIG. 5, the push switch 1 is provided in the case 2 including the upper surface 21, the lower surface 22, and the storage recess 23 formed on the upper surface 21 side, and in the storage recess 23 of the case 2. The switching mechanism 3 that can be switched from the off state to the on state by applying a pressing force, and the storage recess 23 of the case 2 so as to cover the switching mechanism 3 housed in the storage recess 23 of the case 2. When the cover film 4 to be sealed, the adhesive member 5 provided on the lower surface 22 of the case 2, and the switching mechanism 3 provided on the lower surface 22 of the case 2 via the adhesive member 5 are in the ON state. A strain sensor 6 for detecting the strain of the case 2 caused by the pressing force applied to the push switch 1 and a sensor connection terminal T2 for connecting the strain sensor 6 to the mounting board on which the push switch 1 is mounted are included. I'm out. Hereinafter, each component of the push switch 1 will be described in detail.

<< Case 2 >>
The case 2 is a substantially cubic member formed of an insulating resin. The case 2 is formed on the upper surface 21, the lower surface 22, the storage recess 23 formed on the upper surface 21 side, and the edge portion on the long side side of the lower surface 22, along the edge portion on the long side side of the case 2. It is provided with a pair of ribs 24 (see FIG. 4). The case 2 internally holds the central contact 31, the outer contact 32, and the four sensor connection terminals T2 of the switching mechanism 3, which will be described later, in a state of being insulated from each other. The case 2 has a state in which the central contact 31, the outer contact 32, and the sensor connection terminal T2 of the switching mechanism 3 are arranged in the mold corresponding to the outer shape of the case 2 (in FIG. 6, the center held by the case 2). The arrangement of the contact 31, the outer contact 32, and the sensor connection terminal T2 is shown), and the molten insulating resin is poured into the mold, and then the insulating resin is cooled and cured to cause the case 2. Is obtained.

Returning to FIG. 5, the storage recess 23 has a function of internally storing the switching mechanism 3. As described above, the central contact 31 and the outer contact 32 of the switching mechanism 3 are embedded in the case 2, and the contact surface 311 of the central contact 31 and the contact surface 321 of the outer contact 32 face upward in the storage recess 23. It is designed to be exposed. Further, a part of the central contact 31 of the switching mechanism 3 extends in the −X direction in the drawing, and is exposed to the outside from the side surface of the case 2 on the −X direction side. Similarly, a part of the outer contact 32 of the switching mechanism 3 extends in the + X direction in the drawing, and is exposed to the outside from the side surface of the case 2 on the + X direction side. The exposed portions of the central contact 31 and the outer contact 32 that extend laterally from the case 2 and are exposed are a pair of switch connection terminals T1. The pair of switch connection terminals T1 are respectively connected to corresponding terminals formed on the mounting board on which the push switch 1 is mounted, whereby the switching mechanism 3 is connected to the mounting board.

On the other hand, the four sensor connection terminals T2 (see FIG. 6) embedded in the case 2 are not exposed in the storage recess 23. As shown in FIG. 4, each of the four sensor connection terminals T2 extends toward the side of the case 2 and is exposed to the outside from the side exposed portion T21 and the lower surface 22 of the case 2. It has a downwardly exposed portion T22 that is exposed downward.

As will be described later, the adhesive member 5 is a film-like member composed of a thermosetting resin and conductive particles uniformly dispersed inside the thermosetting resin. When the thermosetting resin is cured by heating, the adhesive member 5 is dispersed in the thermosetting resin at a portion where pressure is applied between the terminals of two components connected via the adhesive member 5. The conductive particles overlap while contacting each other to form a conductive path in the thickness direction. Therefore, the adhesive member 5 can function as an anisotropic conductive member that provides a conductive path in the thickness direction of the adhesive member 5 and simultaneously provides an insulating property in the surface direction of the adhesive member 5. Therefore, the lower exposed portion T22 of the four sensor connection terminals T2 is electrically connected to the four terminals 62 (see FIG. 5) of the strain sensor 6 via the adhesive member 5.

The side exposed portions T21 of the four sensor connection terminals T2 are respectively connected to the corresponding terminals formed on the mounting board on which the push switch 1 is mounted. In a state where the lower exposed portions T22 of the four sensor connection terminals T2 are electrically connected to the four terminals 62 of the strain sensor 6 via the adhesive member 5, the side exposed portions T21 of the four sensor connection terminals T2 are mounted on the mounting board. When connected to the corresponding terminals of, the strain sensor 6 is connected to the mounting board.

With reference to FIG. 4, the pair of ribs 24 are formed on the long-side edge of the lower surface 22 of the case 2 along the long-side edge of the case 2, and are separated from each other through a gap. It is a protruding part of. A pair of ribs 24 defines a space 25 for accommodating the adhesive member 5 and the strain sensor 6 on the lower surface 22 of the case 2.

The height of the pair of ribs 24 is such that when the adhesive member 5 and the strain sensor 6 are attached to the lower surface 22 of the case 2 and the adhesive member 5 and the strain sensor 6 are housed in the space 25, the pair of ribs is higher than the strain sensor 6. 24 is set to project downward.

The pair of ribs 24 function as legs of the push switch 1, and when the push switch 1 is mounted on the mounting board, the lower surface 22 of the case 2 is separated from the mounting board. At this time, the lower surface of the pair of switch connection terminals T1 and the lower surface of the side exposed portion T21 of the four sensor connection terminals T2 are also separated from the corresponding terminals formed on the mounting board. When mounting the push switch 1 on the mounting board, after mounting the push switch 1 on the mounting board, the lower surface of the pair of switch connection terminals T1 and the lower surface of the side exposed portion T21 of the four sensor connection terminals T2. It is necessary to fill the space between the and the corresponding terminals of the mounting board with a conductive material such as solder.

More specifically, when the push switch 1 is mounted on the mounting board, the lower surface of the pair of switch connection terminals T1 and the lower surface of the side exposed portion T21 of the four sensor connection terminals T2 correspond to the mounting board. A push switch 1 is placed on the mounting board so that the terminals face each other, and the corresponding terminals on the mounting board, the lower surface of the pair of switch connection terminals T1, and the side exposed portions T21 of the four sensor connection terminals T2. The step of filling the gap between the lower surface and the lower surface with a conductive material such as solder is executed. That is, the lower surface of the pair of switch connection terminals T1 and the lower surface of the side exposed portion T21 of the four sensor connection terminals T2 function as connection surfaces connected to the corresponding terminals of the mounting board.

<< Switching mechanism 3 >>
Returning to FIG. 5, the switching mechanism 3 has a function of switching from the off state to the on state when the user applies a pressing force to the push switch 1. In the following description, the switching mechanism 3 is described as a dome-shaped switch having a dome-shaped movable contact, but the present invention is not limited thereto. Since the dome-shaped switch has an excellent click feeling given to the user, it is preferable to use the dome-shaped switch as the switching mechanism 3, but the movable contact of any shape other than the dome-shaped movable contact (for example, formed in a spring shape). A mechanical switch having a movable contact) can be used as the switching mechanism 3.

The switching mechanism 3 is arranged above the central contact 31 and the outer contact 32 held so as to be insulated from each other by the case 2 described above, and the central contact 31 and the outer contact 32, and the central contact 31 and the outer contact 32 are non-conducting. On the dome-shaped movable contact 33 that can be displaced between the first position to be in a state and the second position that makes the central contact 31 and the outer contact 32 conductive, and the dome-shaped movable contact 33. The movable contact 33 is placed in the first position by pressing the movable contact 33 and the intermediate movable member 34 downward, which are provided on the arranged one or more intermediate movable members 34 and the movable contact 33 and the intermediate movable member 34. Includes a disk-shaped pressing member 35 that is displaced from the to the second position.

FIG. 6 shows a perspective view of the central contact 31 and the outer contact 32 held by the case 2. Each of the central contact 31 and the outer contact 32 is formed of a conductive material, more specifically, a metal material such as stainless steel or copper. The central contact 31 and the outer contact 32 are held in a state of being insulated from each other by the case 2 and function as fixed electrodes.

Each of the central contact 31 and the outer contact 32 is obtained by punching and bending a single metal plate. The central contact 31 has a contact surface 311 that contacts the movable contact 33, and a switch connection terminal T1 that extends outward from the side surface of the case 2 on the −X direction side. The outer contact 32 has a contact surface 321 that contacts the movable contact 33, and a switch connection terminal T1 that extends outward from the side surface of the case 2 on the + X direction side. As described above, the switch connection terminals T1 of the central contact 31 and the outer contact 32 are respectively connected to the corresponding terminals of the mounting board on which the push switch 1 is mounted, whereby the switching mechanism 3 is connected to the mounting board. .. In the vehicle control system 100 of the present invention, the switching mechanism 3 is electrically connected to the drive unit 10 via the line of the mounting board.

As shown in FIG. 5, the contact surface 311 of the central contact 31 is exposed upward in the storage recess 23 of the case 2, and when the movable contact 33 takes the second position, the movable contact This is the surface that comes into contact with 33. The contact surface 321 of the outer contact 32 is exposed upward in the storage recess 23 of the case 2, and the movable contact 33 and the movable contact 33 are in either the first position or the second position. It is the surface that is in contact.

The movable contact 33 is an elastic conductive member having an upwardly convex dome shape, and is arranged above the central contact 31 and the outer contact 32 in the storage recess 23 of the case 2. The movable contact 33 has a planar shape that fits in the storage recess 23 of the case 2. Further, the corners of the movable contact 33 are rounded and rounded. The movable contact 33 is configured to be displaceable between a first position in which the central contact 31 and the outer contact 32 are in a non-conducting state and a second position in which the central contact 31 and the outer contact 32 are in a conductive state. Has been done.

The movable contact 33 has a central movable portion 331 that contacts the central contact 31, and an outer edge portion 332 that contacts the outer contact 32. The central movable portion 331 is formed substantially in the center of the movable contact 33 in a plan view thereof, and the outer edge portion 332 is formed so as to surround the central movable portion 331. As shown in the cross-sectional view of the push switch 1 of FIG. 8, in the movable contact 33, the central movable portion 331 faces the contact surface 311 of the central contact 31 via a gap, and the outer edge portion 332 is the case 2. It is provided in the storage recess 23 of the case 2 so as to come into contact with the contact surface 321 of the outer contact 32 of the case 2. That is, in the natural state where no pressing force is applied to the push switch 1 by the user, the movable contact 33 is convex upward. In the natural state shown in FIG. 8, the movable contact 33 takes a first position. When in the first position, the movable contact 33 is not in contact with the central contact 31, while in contact with the outer contact 32. Therefore, when the movable contact 33 takes the first position, the central contact 31 and the outer contact 32 are in a non-conducting state. At this time, the switching mechanism 3 is in the off state.

In the natural state shown in FIG. 8, when a pressing force exceeding the operating force of the push switch 1 is applied to the pressing member 35, the pressing member 35 moves to the movable contact 33 as shown in FIG. And the intermediate movable member 34 is pressed downward to shift the movable contact 33 from the first position to the second position. When the movable contact 33 is in the second position, the outer edge portion 332 is in contact with the contact surface 321 of the outer contact 32, and the central movable portion 331 is in contact with the contact surface 311 of the central contact 31. That is, when the movable contact 33 is in the second position, it is in contact with both the central contact 31 and the outer contact 32. Therefore, when the movable contact 33 takes the second position, the movable contact 33 functions as a conduction path between the central contact 31 and the outer contact 32, and the central contact 31 and the outer contact 32 are in a conductive state. .. At this time, the switching mechanism 3 is turned on.

In this way, the movable contact 33 comes into contact with the outer contact 32 at both the first position and the second position. On the other hand, the movable contact 33 does not come into contact with the central contact 31 when taking the first position, and further comes into contact with the central contact 31 when taking the second position.

Returning to FIG. 5, one or more intermediate movable members 34 are superposed on the upper side of the movable contact 33. The one or more intermediate movable members 34 are members arranged so as to be overlapped on the upper side of the movable contact 33 in order to keep the operating force of the push switch 1 above a certain level (for example, 300 gf or more). The number of intermediate movable members 34 is not particularly limited, but in the present embodiment, the number of intermediate movable members 34 is two. The intermediate movable member 34 is provided so as to be overlapped between the movable contact 33 and the pressing member 35. Each of the intermediate movable members 34 is an elastic conductive member having the same conductive material as the movable contact 33 and further having an upwardly convex dome shape having the same shape as the movable contact 33. Therefore, the spring load of each of the intermediate movable members 34 and the spring load of the movable contact 33 are substantially equal to each other. Further, each of the intermediate movable members 34 has a central movable portion 341 and an outer edge portion 342, similarly to the movable contact 33. As described above, the intermediate movable member 34 and the movable contact 33 are made of the same conductive material, but in order to improve corrosion resistance and conductivity, only the surface of the movable contact 33 is made of silver or the like. It is plated with metal, which has high corrosion resistance and conductivity.

The pressing member 35 is a disk-shaped member made of a hard resin material. The pressing member 35 is provided above the movable contact 33 and the intermediate movable member 34 in the storage recess 23 of the case 2. More specifically, as shown in FIG. 8, the pressing member 35 is held between the lower surface of the cover film 4 and the upper surface of the intermediate movable member 34. The pressing member 35 is used to efficiently transmit the pressing force applied to the push switch 1 by the user to the movable contact 33 via the intermediate movable member 34 and press the movable contact 33 downward. ..

Among the components constituting the switching mechanism 3, the central contact 31 and the outer contact 32 are integrally molded with the case 2 made of an insulating resin, and the movable contact 33, the intermediate movable member 34, and the pressing member 35 are further formed. , It is located in the storage recess 23 of the case 2. Therefore, the switching mechanism 3 is housed in the storage recess 23 of the case 2. Further, as described above, the pair of switch connection terminals T1 for connecting the switching mechanism 3 to the mounting board extend laterally from the side surface of the case 2 and are exposed to the outside.

<< Cover film 4 >>
Returning to FIG. 5, the cover film 4 seals the storage recess 23 of the case 2 so as to cover the switching mechanism 3 housed in the storage recess 23 of the case 2. The cover film 4 is made of a flexible resin material such as nylon, and is laser welded to the upper surface 21 of the case 2 to tightly seal the storage recess 23 of the case 2. The laser welding of the cover film 4 to the upper surface 21 of the case 2 is performed so as to go around the upper surface 21 of the case 2 instead of point welding. As a result, the inside of the storage recess 23 of the case 2 is sealed, and the waterproof and dustproof functions of the push switch 1 are realized.

<< Sensor connection terminal T2 >>
The four sensor connection terminals T2, together with the adhesive member 5 described later, function as a conduction path between the four terminals 62 of the strain sensor 6 and the corresponding terminals on the mounting board. Each of the four sensor connection terminals T2 is obtained by punching and bending a metal plate. As described above, each of the four sensor connection terminals T2 is integrally molded with the case 2 made of an insulating resin. As shown in FIG. 6, each of the four sensor connection terminals T2 extends to the side surface of the case 2 and is exposed to the outside from the side exposed portion T21 and the lower surface 22 of the case 2 to be exposed to the outside. It has an exposed portion T22.

As shown in FIGS. 3 and 4, the four laterally exposed portions T21 extend laterally toward the case 2 and are exposed to the outside. The four side exposed portions T21 are connected to the corresponding terminals of the mounting board, respectively. As shown in FIG. 4, the four downwardly exposed portions T22 are exposed downward from the lower surface 22 of the case 2. The four downwardly exposed portions T22 are connected to the four terminals 62 of the strain sensor 6 via the adhesive member 5, respectively. Further, at least a part of the four downwardly exposed portions T22 is located in the space 25 defined by the pair of ribs 24 on the lower surface 22 of the case 2. The four terminals 62 of the strain sensor 6 are connected to the four lower exposed portions T22 via the adhesive member 5, respectively. At this time, the adhesive member 5 and the sensor connection terminal T2 function as conduction paths between the corresponding terminals on the mounting board and the four terminals 62 of the strain sensor 6.

<< Adhesive member 5 >>
Returning to FIG. 5, the adhesive member 5 is a film-like member attached to the lower surface 22 of the case 2. Further, as shown in FIG. 4, the adhesive member 5 is located in the space 25 defined by the pair of ribs 24 on the lower surface 22 of the case 2. Therefore, the adhesive member 5 is located between the lower surface 22 of the case 2 and the strain sensor 6. The planar shape of the adhesive member 5 is set to fit the space 25 formed on the lower surface 22 of the case 2.

The adhesive member 5 is composed of a thermosetting resin and conductive particles uniformly dispersed inside the thermosetting resin. When the thermosetting resin is cured by heating, the adhesive member 5 is dispersed in the thermosetting resin at a portion where pressure is applied between the terminals of two components connected via the adhesive member 5. The conductive particles overlap while contacting each other to form a conductive path in the thickness direction. Therefore, the adhesive member 5 can function as an anisotropic conductive member that provides a conductive path in the thickness direction of the film and simultaneously provides insulation in the surface direction of the film. The adhesive member 5 has adhesiveness due to the thermosetting resin before heat curing, and functions as an adhesive member. Therefore, the adhesive member 5 can be attached to the lower surface 22 of the case 2, and the strain sensor 6 can be attached to the lower surface of the adhesive member 5. In the present embodiment, the adhesive member 5 has a film-like shape, but the present invention is not limited to this as long as it can provide the above-mentioned function as an anisotropic conductive member and the function as an adhesive member. For example, the adhesive member 5 may have an arbitrary form such as a paste-like form. Therefore, the adhesive member 5 may be an anisotropic conductive film or an anisotropic conductive paste.

The adhesive member 5 is attached to the lower surface 22 of the case 2 so as to come into contact with the lower exposed portion T22 of the four sensor connection terminals T2 exposed on the lower surface 22 of the case 2. After that, the strain sensor 6 is attached to the lower surface of the adhesive member 5 so that the four terminals 62 of the strain sensor 6 face the lower exposed portions T22 of the four sensor connection terminals T2 via the adhesive member 5. After that, the adhesive member 5 is cured by the heat treatment, and the strain sensor 6 is fixed on the lower surface 22 of the case 2. By such a step, the adhesive member 5 and the strain sensor 6 are provided on the lower surface 22 of the case 2. Since the adhesive member 5 can provide a conductive path in the thickness direction of the film, the four sensor connection terminals T2 and the four terminals 62 of the strain sensor 6 are electrically connected to each other via the adhesive member 5. On the other hand, since the adhesive member 5 provides insulation in the surface direction of the film, the four terminals 62 of the strain sensor 6 are not short-circuited.

<< Strain sensor 6 >>
The strain sensor 6 is provided on the lower surface 22 of the case 2 via the adhesive member 5, and has a function of detecting the strain of the case 2 caused by the pressing force further applied while the switching mechanism 3 is in the ON state. have. Since the strain generated in the case 2 depends on the pressing force further applied when the switching mechanism 3 is in the on state, the strain sensor 6 is further applied when the switching mechanism 3 is in the on state. It is possible to provide an output according to the pressing force. As shown in FIG. 5, the distortion sensor 6 includes a sensor substrate 61, four resistance elements R1, R2, R3, R4 provided on the sensor substrate 61, and four terminals 62.

The sensor substrate 61 is a flexible film-like member formed of an insulating material such as an insulating resin. The planar shape of the sensor substrate 61 is substantially the same as the planar shape of the adhesive member 5, and is set to fit in the space 25 formed on the lower surface 22 of the case 2. Each of the four resistance elements R1, R2, R3, and R4 is formed on the sensor substrate 61 with a predetermined trace pattern (in the illustrated form, a meandering trace pattern) by a conductive material containing at least one of chromium and nickel. It is a flexible thin film resistor.

When distortion occurs in the member in contact with each of the resistance elements R1, R2, R3, and R4, each of the resistance elements R1, R2, R3, and R4 is deformed by receiving the distortion of the member, and as a result, its own resistance value changes. Therefore, each of the resistance elements R1, R2, R3, and R4 functions as a sensitive unit for detecting the distortion of the member in contact with the resistance element R1, R2, R3, and R4. In particular, the resistance elements R1 and R3 located at substantially the center of the sensor substrate 61 have sensitivity to the tension of the member in contact with the resistance elements R1 and R3. On the other hand, the resistance elements R2 and R4 located on the outer side of the sensor substrate 61 have sensitivity to compression of the member in contact with the resistance elements R2 and R4. In this way, by using the resistance elements R1, R2, R3, and R4 to detect the tension and compression of the member in contact with the resistance elements R1, R2, R3, and R4, the strain of the member can be accurately detected. Can be done.

As shown in FIG. 5, in the strain sensor 6, the upper surface of the sensor substrate 61, that is, the surface on which the resistance elements R1, R2, R3, R4 and the four terminals 62 are provided is via the adhesive member 5. Therefore, it is provided on the lower surface 22 of the case 2 so as to face the lower surface 22 of the case 2. In a state where the strain sensor 6 is provided on the lower surface 22 of the case 2 via the adhesive member 5, the four terminals 62 of the strain sensor 6 face and are in contact with the adhesive member 5. Further, the strain sensor 6 faces the central contact 31 and the outer contact 32 of the switching mechanism 3 via the adhesive member 5 and the case 2.

Since the strain sensor 6 is attached to the lower surface 22 of the case 2 via the adhesive member 5, if the case 2 (or the adhesive member 5) is distorted by the pressing force applied to the push switch 1, the strain sensor 6 is distorted. The resistance values of the resistance elements R1, R2, R3, and R4 of the sensor 6 change. Therefore, the strain sensor 6 detects the strain generated in the case 2 (or the adhesive member 5) by the pressing force applied to the push switch 1 based on the resistance change of the resistance elements R1, R2, R3, and R4. Can be done. Since the strain generated in the case 2 depends on the pressing force applied when the switching mechanism 3 of the push switch 1 is in the on state, the strain sensor 6 keeps the switching mechanism 3 of the push switch 1 in the on state. It is possible to detect the pressing force further applied during taking.

As shown in FIG. 7, the resistance elements R1, R2, R3, and R4 form a bridge circuit. Of the four terminals 62 of the bridge circuit, the sensor input terminal pair TP1 composed of the terminal 62 connected to the contact between the resistance elements R1 and R4 and the terminal 62 connected to the contact between the resistance elements R2 and R3 is It is connected to the corresponding terminal on the mounting board via the adhesive member 5 and the sensor connection terminal T2, and further connected to the power supply voltages Vcc and Vss via the wiring of the mounting board. Of the four terminals 62 of the bridge circuit, the sensor output terminal pair TP2 composed of the terminal 62 connected to the contact between the resistance elements R1 and R2 and the terminal 62 connected to the contact between the resistance elements R3 and R4 is It is connected to the corresponding terminal of the mounting board via the adhesive member 5 and the sensor connection terminal T2, and is further electrically connected to the brake unit 60 via the wiring of the mounting board. As a result, the strain sensor 6 is electrically connected to the brake unit 60.

Next, the operation of the push switch 1 will be described in detail with reference to FIGS. 8 and 9. FIG. 8 shows a cross-sectional view taken along the line AA in FIG. 3 of the push switch 1 in a natural state in which no pressing force is applied to the push switch 1, and FIG. 9 shows the push switch 1 On the other hand, a cross-sectional view taken along line AA in FIG. 3 of the push switch 1 in a pressed state in which a pressing force exceeding the operating force of the push switch 1 is applied is shown.

As shown in FIG. 8, in the natural state of the push switch 1, each of the movable contact 33 and the intermediate movable member 34 is convex upward. That is, in the natural state, the movable contact 33 is in the first position. In the first position, the outer edge portion 332 of the movable contact 33 is in contact with the contact surface 321 of the outer contact 32, and the central movable portion 331 of the movable contact 33 is not in contact with the contact surface 311 of the central contact 31. .. That is, when the movable contact 33 is in the first position, it is not in contact with the central contact 31, but is in contact with the outer contact 32. Therefore, when the movable contact 33 is in the first position, the central contact 31 and the outer contact 32 are in a non-conducting state. Therefore, in the natural state shown in FIG. 8, the switching mechanism 3 is in the off state.

In the natural state shown in FIG. 8, when a pressing force exceeding the operating force of the push switch 1 is applied to the pressing member 35 via the cover film 4, the pressing member 35 becomes the movable contact 33 and the intermediate movable member. The 34 is pressed downward to displace the movable contact 33 to the second position. At this time, the push switch 1 shifts to the pressed state shown in FIG. In the pressed state shown in FIG. 9, the movable contact 33 is in the second position. At the second position, the outer edge portion 332 of the movable contact 33 is in contact with the contact surface 321 of the outer contact 32, and the central movable portion 331 of the movable contact 33 is in contact with the contact surface 311 of the central contact 31. ing. That is, when the movable contact 33 is in the second position, it is in contact with both the central contact 31 and the outer contact 32. Therefore, when the movable contact 33 is in the second position, the movable contact 33 functions as a conduction path between the central contact 31 and the outer contact 32, and the central contact 31 and the outer contact 32 are in a conductive state. There is. Therefore, the switching mechanism 3 is in the ON state in the state shown in FIG.

When a pressing force is further applied while the switching mechanism 3 is in the ON state, the bottom surface of the storage recess 23 of the case 2 is pressed, and the lower portion of the case 2 is distorted according to the applied pressing force. Occurs. Since the strain sensor 6 is provided on the lower surface 22 of the case 2 via the adhesive member 5, the strain sensor 6 is the case 2 (or the adhesive member 5) generated in response to the applied pressing force. Distortion can be detected. In this way, the strain sensor 6 detects the strain generated in the case 2 (or the adhesive member 5) according to the applied pressing force, and the strain sensor 6 detects the applied pressing force. It is possible to provide an output according to the applied pressing force.

In the pressed state shown in FIG. 9, when the pressing force on the pressing member 35 is released, the returning force of the push switch 1 provided by the elastic restoring force of the movable contact 33, the intermediate movable member 34, and the cover film 4 causes. , The push switch 1 restores to the natural state shown in FIG.

FIG. 10 shows the feeling curve (load characteristic) X2 of the push switch 1 and the sensor detection amount Y2 of the strain sensor 6. The vertical axis of the graph of FIG. 10 is the pushing load (pushing pressure) (gf or N) applied to the pressing member 35, and the horizontal axis is the pushing amount (mm) of the pressing member 35. As can be seen from the feeling curve (load characteristic) X2 of the push switch 1 shown in FIG. 10, the load applied to the push switch 1 is provided by the movable contact 33 and the intermediate movable member 34 of the push switch 1, respectively. The load required to push down the pressing member 35 gradually increases until the operating force of the push switch 1 is reached, and the load applied to the push switch 1 is applied to the movable contact 33 and the intermediate movable member 34 of the push switch 1. When the operating force of the push switch 1 provided by each of the above is reached, the movable contact 33 and the intermediate movable member 34 are arranged so that the central movable portion 331 of the movable contact 33 and the central movable portion 341 of the intermediate movable member 34 are convex downward. The shape of is reversed and the load is reduced. Therefore, when the load applied to the push switch 1 reaches the operating force of the push switch 1, the pressing member 35 is suddenly pushed down, a click feeling is provided to the user, and the switching mechanism 3 is turned on. ..

On the other hand, as can be seen from the curve of the sensor detection amount Y2 of the strain sensor 6 shown in FIG. 10, in the strain sensor 6, the load applied to the push switch 1 is applied to the movable contact 33 of the push switch 1 and the intermediate movable member. A substantially constant amount of sensor detection (or zero if zero set is done properly) until the operating force of the pushswitch 1 provided by each of the 34 is reached, i.e., while the switching mechanism 3 is off. Is being output. On the other hand, the load applied to the push switch 1 reaches the operating force of the push switch 1 provided by each of the movable contact 33 of the push switch 1 and the intermediate movable member 34, and the central movable portion 331 of the movable contact 33 is predetermined. When a further pressing force is applied after the push-button is pushed down by the pushing amount and comes into contact with the central contact 31 of the switching mechanism 3, that is, after the switching mechanism 3 is turned on, the strain is distorted according to the applied pushing pressure. The sensor detection amount Y2 of the sensor 6 increases substantially linearly. In this way, the sensor detection amount of the distortion sensor 6 can be used as an analog output that increases in response to the pressing force applied when the switching mechanism 3 is in the ON state.

With such a configuration, the push switch 1 is applied with a pushing pressure exceeding the operating force of the push switch 1 by the user, the central movable portion 331 of the movable contact 33 is pushed down by a predetermined pushing amount, and the center of the switching mechanism 3 is pushed down. Along with a switching function that turns on when the contact 31 is touched and turns off when the push pressure applied by the user is released, the push pressure applied by the user in the on state is detected and the detected push pressure is detected. It is possible to provide a push pressure sensing function that provides an output according to the pressure.

<Drive unit 10>
Returning to FIG. 1, the drive unit 10 will be described in detail. The drive unit 10 is configured to drive the vehicle when the switching mechanism 3 is in the off state, and to release the drive of the vehicle when the switching mechanism 3 is in the on state. The drive unit 10 includes an electric throttle valve 101 electrically connected to a switch connection terminal T1 of a switching mechanism 3 of the push switch 1 and an electric throttle valve 101 via a line on a mounting board on which the push switch 1 is mounted. A rotation control unit (motor controller) electrically connected to the switch connection terminal T1 of the switching mechanism 3 of the push switch 1 via the line of the mounting board on which the push switch 1 is mounted and the engine 102 that is driven according to opening and closing. ) 103 and an electric motor 104 that is driven according to the control from the rotation control unit 103. The power generated by the drive of the engine 102 and / or the drive of the electric motor 104 is used to rotate the wheels of the vehicle, and the drive of the engine 102 propels the vehicle.

In the illustrated embodiment, the drive unit 10 has both a pair of an electric throttle valve 101 and an engine 102 and a pair of a rotation control unit 103 and an electric motor 104, but the present invention is not limited to this. .. For example, if the vehicle is an engine vehicle driven by fuel such as gasoline, the pair of the rotation control unit 103 and the electric motor 104 may be omitted, and if the vehicle is an electric vehicle, the electric throttle valve 101 and The pair of engines 102 may be omitted, or if the vehicle is a hybrid vehicle, it may have both a pair of an electric throttle valve 101 and an engine 102, and a pair of a rotation control unit 103 and an electric motor 104. good.

The electric throttle valve 101 is electrically connected to the switching mechanism 3 of the push switch 1, is configured to open when the switching mechanism 3 is in the off state, and to be closed when the switching mechanism 3 is in the on state. ing. As the electric throttle valve 101, a butterfly valve (throttle valve) that is opened and closed by an electric actuator can be used. The engine 102 has a function of driving a vehicle by driving according to the opening and closing of the electric throttle valve 101. Specifically, when the switching mechanism 3 of the push switch 1 is turned off and the electric throttle valve 101 is open, the engine 102 increases its own rotation speed to accelerate the vehicle. On the other hand, when the switching mechanism 3 of the push switch 1 is turned on and the electric throttle valve 101 is closed, the engine 102 lowers its own rotation speed and stops accelerating the vehicle. As the engine 102, any known internal combustion engine such as a gasoline engine can be used.

The rotation control unit 103 is electrically connected to the switching mechanism 3 of the push switch 1, drives the electric motor 104 when the switching mechanism 3 is in the off state, and is electric when the switching mechanism 3 is in the on state. It is configured to release the drive of the motor 104. The rotation control unit 103 is not particularly limited as long as it is configured to control the electric motor 104 as described above, and controls the electric motor 104 as described above by hardware, software, or a combination thereof. A circuit, a device, a processor, or the like can be used as the rotation control unit 103.

The electric motor 104 has a function of driving the vehicle according to the control from the rotation control unit 103. Specifically, when the switching mechanism 3 of the push switch 1 is in the off state, the electric motor 104 increases its own rotation speed and accelerates the vehicle in response to the control from the rotation control unit 103. On the other hand, when the switching mechanism 3 of the push switch 1 is in the ON state, the electric motor 104 lowers its own rotation speed and stops accelerating the vehicle in response to the control from the rotation control unit 103. As the electric motor 104, any electric motor known in the field of electric vehicles or hybrid vehicles can be used.

<Reset circuit 20, amplifier 30, AD converter 40, control circuit 50, and brake unit 60>
The reset circuit 20 is electrically connected to the strain sensor 6 of the push switch 1 and executes a reset operation for stabilizing the output of the strain sensor 6. The amplifier 30 is connected to the output of the reset circuit 20. The amplifier 30 amplifies the output from the strain sensor 6 input via the reset circuit 20 and provides the output to the AD converter 40. The AD converter 40 AD-converts the output from the amplifier 30. The output from the AD converter 40 is input to the control circuit 50, and the control circuit 50 executes processing according to the input.

The brake unit 60 is configured to decelerate the vehicle in response to a pressing force further applied when the switching mechanism 3 is in the ON state detected by the strain sensor 6 of the push switch 1. The brake unit 60 includes a brake lamp 601 that lights up in response to control from the control circuit 50, a motor 602 that is driven in response to control from the control circuit 50, and a brake piston 603 that is driven by a driving force provided by the motor 602. And the brake pads 604, which are pressed against the disc rotor of the vehicle by the pressure from the brake piston 603.

The control circuit 50 controls the drive of the motor 602 according to the magnitude of the output from the strain sensor 6 input via the reset circuit 20, the amplifier 30, and the AD converter 40. The control circuit 50 controls the rotation speed of the motor 602 according to the output from the strain sensor 6, that is, the pressing force further applied when the switching mechanism 3 of the push switch 1 is in the ON state. Further, the control circuit 50 drives the motor 602 and turns on the brake lamp 601 when the vehicle is decelerated. The brake lamp 601 may be electrically connected to the switch connection terminal T1 of the switching mechanism 3 of the push switch 1 as in the drive unit 10. In this case, the brake lamp 601 lights up according to the state (on / off) of the switching mechanism 3. Specifically, the brake lamp 601 is turned on when the switching mechanism 3 is turned on, and is turned off when the switching mechanism 3 is turned off.

When the motor 602 is driven by the control circuit 50, the brake piston 603 is driven by the driving force provided by the motor 602. The pressure generated by the drive of the brake piston 603 presses the brake pads 604 against the disc rotor (brake rotor) of the vehicle, and the vehicle is decelerated or stopped.

Further, the control circuit 50 reduces the vehicle deceleration so as to provide an ABS (anti-lock braking system) function that prevents the wheels of the vehicle from locking when the vehicle decelerates suddenly (during sudden braking). You may control each part involved. The ABS function can be realized by using any control method known in the field of vehicle control.

FIG. 11 shows an example of the installation position of the push switch 1 of the vehicle control system 100 of the present invention in the vehicle. As shown in FIG. 11, the push switch 1 can be provided at any position in the vehicle such as the steering wheel 200 and the dashboard 300.

As shown in FIG. 11, when the push switch 1 is provided on the steering wheel 200, the push switch 1 is located at the driver's hand holding the steering wheel 200 and driving the vehicle. Therefore, the driver can control the driving of the vehicle only by the movement of the fingertip without any special physical operation. Further, since the push switch 1 is located at the driver's hand, it is possible to cope with a situation where a quick operation of the push switch 1 is required, such as when it is necessary to apply a sudden brake. Further, since the driving of the vehicle is controlled by the pressing operation of the push switch 1, the driver does not need to operate the accelerator pedal and the brake pedal with his / her feet to control the driving of the vehicle. Therefore, by using the vehicle control system 100 of the present invention, it is possible to prevent the driver from making a mistake in pressing the accelerator pedal and the brake pedal.

On the other hand, when the push switch 1 is provided on the dashboard 300, not only the driver but also a companion sitting in the passenger seat or the rear seat can execute the pressing operation of the push switch 1. Therefore, even if the driver loses consciousness while driving the vehicle, the companion sitting in the passenger seat or the rear seat can operate the push switch 1 to stop the vehicle in an emergency. ..

As described above, in the vehicle control system 100 of the present invention, the control of the vehicle drive is realized by the pressing operation on the push switch 1 including the switching mechanism 3 and the strain sensor 6. Therefore, it is possible to prevent a traffic accident due to a mistake in pressing the accelerator pedal and the brake pedal. Further, since the push switch 1 can be provided at any place other than the driver's feet, for example, the steering wheel 200 or the dashboard 300, even if the driver loses consciousness during driving, the push switch 1 can be provided. A companion sitting in the passenger seat or the rear seat can operate the push switch 1 and can safely stop the vehicle.

Although the vehicle control system of the present invention has been described above based on the illustrated embodiment, the present invention is not limited thereto. Each configuration of the present invention can be replaced with any configuration capable of exhibiting the same function, or any configuration can be added to each configuration of the present invention.

One of ordinary skill in the art in the field and technology to which the present invention belongs will be able to carry out the structural changes of the vehicle control system of the present invention described without significantly deviating from the principles, ideas and scope of the present invention. Vehicle control systems with modified configurations are also within the scope of the present invention.

Further, FIG. 1 is a block diagram schematically showing only the minimum necessary elements for detailing the vehicle control system, and includes elements having arbitrary functions not shown in FIG. The vehicle control system is also within the scope of the present invention.

Further, the number of push switches in the vehicle control system of the present invention is not limited to one, and an embodiment in which two or more push switches 1 are used in the vehicle control system of the present invention is also within the scope of the present invention. .. Further, the location and the number of push switches installed in the vehicle are not particularly limited, and can be appropriately set as needed.

Further, the number and types of components of the push switch shown in FIGS. 2 to 10 are merely examples for explanation, and the present invention is not necessarily limited to this. It is also within the scope of the present invention that any component is added or combined, or any component is deleted without departing from the principle and intention of the present invention.

1 ... Push switch 2 ... Case 21 ... Top surface 22 ... Bottom surface 23 ... Storage recess 24 ... Rib 25 ... Space 3 ... Switching mechanism 31 ... Central contact 311 ... Contact surface 32 ... Outer contact 321 ... Contact surface 33 ... Movable contact 331 ... Center Movable part 332 ... Outer edge part 34 ... Intermediate movable member 341 ... Central movable part 342 ... Outer edge part 35 ... Pressing member 4 ... Cover film 5 ... Adhesive member 6 ... Distortion sensor 61 ... Sensor board 62 ... Terminal 10 ... Drive unit 101 ... Electric Throttle valve 102 ... Engine 103 ... Rotation control unit 104 ... Electric motor 20 ... Reset circuit 30 ... Amplifier 40 ... AD converter 50 ... Control circuit 60 ... Brake unit 601 ... Brake lamp 602 ... Motor 603 ... Brake piston 604 ... Brake pad 100 ... Vehicle control system 200 ... Steering wheel 300 ... Dashboard R1, R2, R3, R4 ... Resistance element T1 ... Switch connection terminal TP1 ... Sensor input terminal vs. T2 ... Sensor connection terminal T21 ... Side exposed part T22 ... Downward exposed part TP2 ... Sensor output terminal vs. Vcc ... Power supply voltage Vss ... Power supply voltage X2 ... Feeling curve (load characteristics) Y2 ... Sensor detection amount

Claims (9)

A vehicle control system for controlling the drive of a vehicle.
A switching mechanism that can switch from an off state to an on state by applying a pressing force, a strain sensor for detecting the pressing force further applied when the switching mechanism is in the on state, and a strain sensor. With a push switch and
It is electrically connected to the switching mechanism of the push switch to drive the vehicle when the switching mechanism is in the off state, and further, the vehicle when the switching mechanism is in the on state. With a drive unit configured to release the drive of
A brake unit electrically connected to the strain sensor of the push switch and configured to decelerate the vehicle in response to the pressing force further applied while the switching mechanism is in the on state. A vehicle control system characterized by including,. The push switch further includes a case having an upper surface, a lower surface, and a storage recess formed on the upper surface side.
The switching mechanism is provided in the storage recess of the case.
The strain sensor is provided on the lower surface of the case, and detects the strain of the case caused by the pressing force further applied while the switching mechanism is in the ON state. The vehicle control system according to claim 1, wherein the pressing force further applied when the switching mechanism is in the on state is detected. The switching mechanism is
With the central contact provided in the storage recess of the case,
In the storage recess of the case, an outer contact provided apart from the central contact,
In the storage recess of the case, a first position is arranged above the central contact and the outer contact so that the central contact and the outer contact are in a non-conducting state, and the central contact and the outer contact A dome-shaped movable contact that can be displaced between the second position and the second position that makes the state conductive,
The claim includes a disk-shaped pressing member provided above the movable contact and for displace the movable contact from the first position to the second position by pressing the movable contact downward. 2. The vehicle control system according to 2. The movable contact contacts the outer contact at both the first position and the second position.
The movable contact does not come into contact with the central contact when it takes the first position, thereby enabling the off state of the switching mechanism in which the central contact and the outer contact are not conducting. Further, the movable contact contacts the central contact when taking the second position, thereby enabling the on state of the switching mechanism in which the central contact and the outer contact are conducting. The vehicle control system according to claim 3. The vehicle control system according to claim 3 or 4, wherein the strain sensor faces the central contact and the outer contact of the switching mechanism via the case. The vehicle control system according to any one of claims 1 to 5, wherein the push switch is provided on the steering wheel of the vehicle. The vehicle control system according to any one of claims 1 to 5, wherein the push switch is provided on the dashboard of the vehicle. The brake unit includes a brake lamp and
The vehicle control system according to any one of claims 1 to 7, wherein the brake unit is configured to light the brake lamp when the vehicle is decelerating. The brake unit includes a motor driven by an output from the strain sensor, a brake piston driven by the motor, and a brake pad pressed against the disc rotor of the vehicle by the pressure from the brake piston. The vehicle control system according to any one of claims 1 to 8.

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