JP2007196892A - Emergency stop device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an emergency stop device for a vehicle having a simple structure to remarkably shorten a braking distance by generating large braking force at an emergency stop time of the vehicle. <P>SOLUTION: This emergency stop device 10 is provided with a braking plate member 17 arranged in a horizontal state on a bottom part side of a vehicle body 3 between front and rear wheels 2 of the vehicle 1, a driving device 11 mounted on the bottom part side of the vehicle body 3 between the front and rear wheels 2 to move the braking plate member 17 downward, and a driving control device 21 for pressing the braking plate member 17 on a road surface G by driving the driving device 11 when the vehicle 1 becomes an emergency stop state. The driving device 11 is provided with a pair of electric motors 12 and 13 fixed to front and rear sides on the bottom part side of the vehicle body 3. A pair of pressing rods 14 are fixed at one end to be extended backward on a rotary shaft of the electric motor 12 on the front side. A pair of pressing rods 15 are fixed to one end to be extended forward on a rotary shaft of the electric motor 13 on the rear side. The other ends of each of the pressing rod 14 and 15 are mounted to be rotatable on both side surfaces of the braking plate member 17. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an emergency stop device for a vehicle that shortens the braking distance of a vehicle when the vehicle traveling on a road is in an emergency stop.

  During an emergency stop while the vehicle is running, the brake is operated and braking force is applied to the vehicle, but if the speed is too high or the road surface is wet or frozen, the wheels will lock and slip. It becomes easy. As a result, a sufficient braking force is not applied to the vehicle and the braking distance becomes long, so that there is a problem that a slip accident or a rear-end collision is likely to occur. Therefore, it is necessary to increase the braking force on the vehicle side to avoid the occurrence of such an accident, and there is a strong need to mount an emergency stop device other than the conventional brake on the vehicle.

Conventionally, as an emergency stop device for this type of vehicle, for example, as shown in Patent Document 1, a return air cylinder is fixed to the rear center of the rear wheel of the vehicle, and the destination of the air cylinder is located below the bottom plate of the vehicle. It is known that it is installed at a position and a reduction member is attached to its tip. According to this emergency stop device, when the brake pedal is pressed in an emergency, the limit switch on the back of the brake pedal is turned on, the solenoid valve of the air tank opens, air is sent to the air cylinder, and the tip of the air cylinder is By pressing the attached reduction member against the road surface, a protrusion of several millimeters above the road surface is cut by the reduction member. As a result, a large frictional force acts between the reducing member and the road surface, and a large braking force is obtained accordingly. However, since this emergency stop device is provided in a limited range at the rear of the rear wheel of the vehicle, the size of the reduction member is limited and the contact area with the road surface is reduced, so that it is not always sufficient. The braking force was not obtained.
JP 2001-55122 A

  An object of the present invention is to provide an emergency stop device for a vehicle having a simple structure capable of generating a large braking force and greatly shortening a braking distance when an emergency stop of the vehicle occurs. And

  In order to achieve the above-mentioned object, the structural feature of the present invention is that a braking plate member disposed between the front and rear wheels of the vehicle so as to extend horizontally in front and rear of the vehicle body bottom side and a vehicle body bottom portion between the front and rear wheels. Drive device attached to the side to move the brake plate member downward, and drive control device to drive the drive device according to the emergency stop state and press the brake plate member against the road surface when the vehicle enters the emergency stop state It is in having established.

  In the present invention configured as described above, when the vehicle is in an emergency stop state, the drive device is immediately driven by the control of the drive control device to move the brake plate member downward and press it against the road surface. Here, the brake plate member is disposed between the front and rear wheels of the vehicle, and a large area can be secured. Therefore, the brake plate member comes into contact with the road surface over a wide area, and a large frictional force is generated between them. As a result, in the present invention, a very large braking force can be obtained instantaneously in response to an emergency stop and the vehicle can immediately enter a stopped state, so that the braking distance is significantly shortened.

  Further, in the present invention, the emergency stop state is synchronized with the operation of the antilock brake system of the vehicle, and the drive control device performs control according to the detection result of the detection means related to the antilock brake system. can do. As described above, the drive device is automatically driven in synchronization with the emergency stop state in which the anti-lock brake system is activated to relax the braking force applied to the wheel when the wheel is locked by the operation of the brake. Thus, the emergency stop device can be reliably operated in accordance with the emergency stop state that requires operation.

  Further, in the present invention, there is provided a lock state detecting means for detecting that the vehicle wheel is in a locked state, and the occurrence of the emergency stop state is set to the time when the lock state of the wheel is detected by the lock state detecting means. The drive control device can perform control according to the detection result. Thus, when the vehicle enters an emergency stop state, the drive device is immediately driven by the control of the drive control device to move the brake plate member downward according to the detection result of the lock state by the lock state detection means. Therefore, the emergency stop device can be reliably operated in accordance with the emergency stop state where the operation is required.

  Further, in the present invention, the drive device is attached to a pair of rotary drive devices provided at the front and rear of the vehicle body bottom side, and is fixed to the rotary shaft of the rotary drive device at one end and rotatably attached to the brake plate member at the other end. And a pair of front and rear pressing rods that are slidable in the front-rear direction with respect to the brake plate member. Thus, in the emergency stop state, the pair of pressing rods rotate and the brake plate member slides by driving the pair of rotary driving devices provided at the front and rear of the vehicle body bottom side under the control of the drive control device. Thus, the brake plate member can be pressed against the road surface, and the braking action by the brake plate member can be exerted strongly.

  Further, in the present invention, the drive device is rotatably attached at any one of the front and rear positions on the bottom side of the vehicle body and extends in the other direction of the front and back, and the drive device is rotated to either the front or rear side of the vehicle body bottom side. A pressing rod member that is movably attached and extends in one front-rear direction, is attached to the tip of the driving rod of the cylinder device on the tip side, and further has a brake plate member attached to the lower end of the tip. Good. Thus, in the emergency stop state, the pressing rod member is attached to the driving rod of the cylinder device by driving the cylinder device that is attached to either the front or rear of the vehicle body bottom side and extends in the front-rear direction under the control of the drive control device. It is pushed and moves downward, and accordingly, the brake plate member attached to the lower end of the tip of the press rod member can be pressed against the road surface, and the braking action by the brake plate member can be exerted strongly.

  Further, in the present invention, the driving device is attached to one of the front and rear positions on the bottom side of the vehicle body and extends in the other direction of the front and rear, and one position of the front end of the driving rod of the cylinder device and the front and rear of the brake plate member There may be provided a first connecting rod that rotatably connects the second connecting rod that rotatably connects the cylinder device main body side and the other front and rear positions of the brake plate member. Thus, in the emergency stop state, the first drive rod is retracted by driving the cylinder device attached to one of the front and rear sides on the vehicle body bottom side and extending in the front-rear direction under the emergency stop state. The connecting rod and the second connecting rod rotate downward about the drive rod tip and the cylinder device body mounting position. Therefore, when the braking plate member is pressed downward and pressed against the road surface, the braking action by the braking plate member can be exerted strongly.

  Further, in the present invention, the drive device is attached to any one of the front and rear positions on the vehicle body bottom side, the drive member disposed at the other front and rear positions on the vehicle body bottom side, and the rotation of the rotation drive device For converting the drive member into the longitudinal movement of the drive member, a first connecting rod for pivotally connecting one of the drive member and the front and rear positions of the brake plate member, and the rotational drive device side and the front and rear of the brake plate member A second connecting rod that rotatably connects the other position may be provided. Thus, in the emergency stop state, the rotation drive device attached to either the front or the rear of the vehicle body bottom side is rotated by the control of the drive control device, and the rotation of the rotation drive device is moved back and forth by the conversion device. When the drive member moves to the rotary drive device side, the distance from the rotary drive device is shortened. For this reason, the first connecting rod and the second connecting rod rotate downward about the mounting position of the drive member tip and the rotary drive device main body. Therefore, when the brake plate member is pressed downward and pressed against the road surface, the braking action by the brake plate member can be exerted strongly.

  Further, in the present invention, the driving device is a cylinder device that is attached to any one of the front and rear positions on the vehicle body bottom side and extends in the other direction of the front and rear, the brake plate member is a spring plate that can be elastically deformed, and the spring plate The one end side in the longitudinal direction may be fixed to the tip of the drive rod of the cylinder device, and the other end side in the longitudinal direction may be fixed to the main body side of the cylinder device. Thus, in an emergency stop state, elastic deformation is achieved by driving a cylinder device attached to one of the front and rear of the vehicle body bottom side and extending in the front-rear direction by pulling the drive rod and shortening it under the control of the drive control device. A brake plate member, which is a possible spring plate, is compressed between the drive rod and the cylinder device body and bent downward. Therefore, a portion having a large area in the middle of the spring plate can be bent downward and pressed against the road surface, and the braking action by the braking plate member can be exerted strongly.

  Further, in the present invention, the drive device is attached to any one of the front and rear positions on the vehicle body bottom side, the drive member disposed at the other front and rear positions on the vehicle body bottom side, and the rotation of the rotation drive device And a conversion device that converts the movement of the drive member into the longitudinal direction of the drive member, the brake plate member is a spring plate that can be elastically deformed, one end in the longitudinal direction of the spring plate is fixed to the drive member, and the other end in the longitudinal direction is It may be fixed to a rotary drive device. Thus, in the emergency stop state, the rotation drive device attached to either the front or the rear of the vehicle body bottom side is rotated by the control of the drive control device, and the rotation of the rotation drive device is moved back and forth by the conversion device. When the drive member moves to the rotary drive device side, the distance from the rotary drive device is shortened. Therefore, the brake plate member, which is an elastically deformable spring plate, is compressed between the rotary drive device and the drive member and bent downward. Therefore, a portion having a large area in the middle of the spring plate can be bent downward and pressed against the road surface, and the braking action by the braking plate member can be exerted strongly.

  In the present invention, the driving device may be an airbag device, and a braking plate member may be fixed to the airbag device at the bottom. As a result, in the emergency stop state, the airbag control device is inflated by the control of the drive control device, and the braking plate member fixed to the bottom portion of the airbag device can be pressed against the road surface, and the braking action by the braking plate member can be strengthened. It can be demonstrated.

  In the present invention, according to the emergency stop state of the vehicle, the drive device is immediately driven by the control of the drive control device to move the brake plate member downward and press it against the road surface. A large frictional force is generated between the two. As a result, in the present invention, a very large braking force can be obtained instantaneously in response to an emergency stop, so that the vehicle immediately enters a stop state, the braking distance is significantly shortened, and slip accidents and rear-end collision accidents are effectively performed. Can be prevented.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a schematic configuration applied to a vehicle of an emergency stop device for a vehicle according to a first embodiment, and FIGS. 2 and 3 show arrangement states before and after operation of a drive device and a brake plate member of the emergency stop device. Each is schematically shown by a front view, and FIG. 4 schematically shows a drive device by a bottom view. The emergency stop device 10 is attached to the bottom side of the vehicle body 3 between the front and rear wheels 2 of the vehicle 1 and the brake plate member 17 disposed horizontally on the bottom side of the vehicle body 3 between the front and rear wheels 2 of the vehicle 1. A drive device 11 that moves the plate member 17 downward, and a drive control device 21 that drives the drive device 11 to press the brake plate member 17 against the road surface G when the vehicle 1 enters an emergency stop state are provided. .

  The drive device 11 is provided with electric motors 12 and 13 that are a pair of rotational drive devices fixed to the front and rear of the vehicle body bottom side. Both electric motors 12 and 13 have rotating shafts 12a and 13a projecting left and right from both sides. The front electric motor 12 rotates rightward when viewed from the left side of the vehicle, and the rear electric motor 13 rotates counterclockwise in the reverse direction. A pair of pressing rods 14 having a predetermined length is fixed to one end of the rotating shaft 12a of the front electric motor 12 and extends rearward. The rotating shaft 13a of the rear electric motor 13 has a predetermined length. A long pressing rod 15 is fixed at one end and extends forward. The other ends of the pair of pressing rods 14 are rotatably attached to front mounting portions 18 (described later) on both side surfaces of the braking plate member 17, and the other ends of the pair of pressing rods 15 are both sides of the braking plate member 17. The surface is rotatably attached to a rear attachment portion 19. The brake plate member 17 is a rectangular hard plate material whose bottom surface is treated so as to increase the frictional force with the road surface G, and front and rear mounting portions 18 and 19 are mounted on both side surfaces so as to be slidable in the front-rear direction. Yes. In the normal state, the drive device 11 has a pair of front and rear pressing rods 14 and 15 that are substantially horizontal and support the brake plate member 17 in the vicinity of the bottom surface of the vehicle body 3, so that there is no problem in traveling the vehicle. Is arranged.

  The drive control device 21 is provided in the engine room and is configured by a microcomputer. Connected to the input side of the drive control device 21 is a rotation sensor 22 attached to the wheel 2 used in an anti-lock brake system that relaxes the braking force applied to the wheel when the wheel is locked by the operation of the brake. Yes. Electric motors 12 and 13 are connected to the output side of the drive control device 21. Accordingly, the drive control device 21 can receive the input from the rotation sensor 22 and drive the drive device 11 in synchronization with the operation of the anti-lock brake system that reduces the braking force.

  In the first embodiment configured as described above, upon receiving an input signal from the rotation sensor 22 attached to the wheel 2, it recognizes the emergency stop state in which the antilock brake system that the drive control device 21 relaxes operates. By driving a pair of electric motors 12 and 13 provided at the front and rear of the bottom side of the vehicle body 3, the pair of pressing rods 14 and 15 are rotated to slide the front and rear mounting portions 18 and 19 of the brake plate member 17. Thus, the brake plate member 17 can be moved downward and pressed against the road surface G. Therefore, the brake plate member 17 comes into contact with the road surface G over a wide area, and a large frictional force is generated between them. As a result, in the first embodiment, since a very large braking force can be obtained instantaneously in response to an emergency stop, the vehicle immediately enters a stop state, and the braking distance is remarkably shortened. It can be effectively prevented. Further, in the first embodiment, the drive control device 21 is controlled in synchronism with the emergency stop state in which the anti-lock brake system that relaxes the braking force applied to the wheel when the wheel is locked by the operation of the brake is operated. When the drive device 11 is driven, the emergency stop device 10 can be effectively operated in accordance with the emergency stop state in which the operation is required.

  Next, Example 2 will be described. FIGS. 5 and 6 schematically show the arrangement before and after the operation of the driving device and the brake plate member of the emergency stop device according to the second embodiment, respectively, in front view, and FIG. 7 schematically shows the driving device in bottom view. It is shown. As in the first embodiment, the emergency stop device is provided between the front and rear wheels 2 of the vehicle 1 and includes a drive device 25 that moves the brake plate member 17 downward. About the brake plate member 17 and the drive control device 21 Is the same as in Example 1.

  The driving device 25 is attached to the vehicle body bracket 3a so as to be pivotable on the left and right sides on the rear side of the vehicle body 3 and extends forward, and on the vehicle body bracket 3b on the left and right sides of the vehicle body 3 on the bottom side. A pressing rod member 28 that is rotatably attached and extends in the rearward direction and is attached to the front end of the drive rod 27 of the cylinder device 26 on the rear end side is provided. The pressing rod member 28 has a distal end portion 28a that protrudes at an angle slightly larger than a right angle on the distal end side. The tip of the drive rod 27 of the cylinder device 26 is rotatably attached to the base side of the tip portion 28a. The protruding end side of the distal end portion 28 a of the pressing rod member 28 is rotatably attached to both side walls at the front and rear center positions of the braking plate member 17. In the normal state, the drive device 25 has the drive rod 27 of the cylinder device 26 fully retracted, and is substantially horizontal with the pressing rod member 28 to support the brake plate member 17 in the vicinity of the bottom surface of the vehicle body 3. There is no problem in driving the vehicle.

  In the second embodiment configured as described above, upon receiving an input signal from the rotation sensor 22 attached to the wheel 2, it recognizes the emergency stop state in which the antilock brake system that the drive control device 21 relaxes operates. By driving a pair of cylinder devices 26 provided on the left and right behind the bottom side of the vehicle body 3, the pressing rod member 28 is pushed by the driving rod 27 of the cylinder device 26 and moves downward. The brake plate member 17 attached to the projecting end of the front end portion 28a can be pressed against the road surface G. Therefore, the brake plate member 17 comes into contact with the road surface G over a wide area, and a large frictional force is generated between them. As a result, also in the second embodiment, as in the first embodiment, since a very large braking force is instantaneously obtained in response to an emergency stop, the vehicle immediately enters a stop state, and the braking distance is remarkably shortened. Thus, slip accidents and rear-end collisions can be effectively prevented.

  Next, Example 3 will be described. FIGS. 8 and 9 schematically show the arrangement before and after the operation of the driving device and the brake plate member of the emergency stop device according to the third embodiment by a front view, and FIG. 10 schematically shows the driving device by a bottom view. It is shown. The emergency stop device is provided with a driving device 31 that is attached between the front and rear wheels 2 of the vehicle 1 and moves the braking plate member 17 that is the above-mentioned rectangular hard plate material downward. It is the same.

  The drive device 31 is provided with a pair of cylinder devices 32 that are fixed to the vehicle body bracket 3c on both the left and right sides in front of the bottom of the vehicle body 3 and extend horizontally rearward. The drive rod 33 of the cylinder device 32 is full. In a stretched state, the tip is located on the rear side. A first connecting rod 34 is rotatably attached to the tip 33 a of the drive rod 33, and the other end of the first connecting rod 34 is rotatably attached to the front end side mounting portion 18 of the brake plate member 17. ing. A second connecting rod 35 is rotatably attached to the body bracket 3c on the cylinder device 32 main body side, and the other end of the second connecting rod 35 is turned to the rear end side attaching portion 19 of the brake plate member 17. It is attached as possible. The brake plate member 17 is supported by the first and second connecting rods 34 and 35 and is disposed in a substantially horizontal state on the bottom side of the vehicle body 3. In the normal state, the drive device 31 has the brake plate member 17 disposed in a horizontal state in the vicinity of the bottom surface of the vehicle body 3 so that there is no problem in traveling of the vehicle.

  In the third embodiment configured as described above, upon receiving an input signal from the rotation sensor 22 attached to the wheel 2, the emergency stop state in which the anti-lock brake system that the drive control device 31 relaxes is recognized. By driving a pair of cylinder devices 32 provided on the left and right in front of the bottom side of the vehicle body 3, the drive rod 33 is pulled to the full. Thereby, the 1st connection rod 34 and the 2nd connection rod 35 rotate toward the downward direction centering | focusing on the drive rod 33 front-end | tip and the cylinder apparatus 32 main body attaching parts 18 and 19, respectively. Therefore, the brake plate member 17 can be bent downward and pressed against the road surface G, and the brake plate member 17 comes into contact with the road surface G over a wide area, and a large frictional force is generated between them. As a result, also in the third embodiment, as in the first embodiment, since a very large braking force can be obtained instantaneously in response to an emergency stop, the vehicle immediately enters a stop state, and the braking distance is remarkably shortened. Thus, slip accidents and rear-end collisions can be effectively prevented.

  Next, Example 4 will be described. FIGS. 11 and 12 schematically show the arrangement before and after the operation of the driving device and the brake plate member of the emergency stop device according to the fourth embodiment, respectively, in front view, and FIG. 13 schematically shows the driving device in bottom view. It is shown. The emergency stop device is provided with a drive device 41 that is attached between the front and rear wheels 2 of the vehicle 1 and moves the braking plate member 17 that is the above-mentioned rectangular hard plate material downward. The drive control device 21 is the same as that of the first embodiment. It is the same.

  The drive device 41 is provided with a pair of electric motors 42 that are rotational drive devices fixed to the vehicle body 3 on both the left and right sides in front of the bottom side of the vehicle body 3. A rotating shaft 43 with a thread groove, which is a conversion device that converts rotation into movement in the front-rear direction of the drive member 44, is integrally attached and extends rearward, and is rotatably fixed to the vehicle body side bracket 3d on the rear end side. ing. A plate-like drive member 44 having a pair of screw holes (not shown) is attached to both the rotating shafts 43 by screwing in the screw holes. As a result, the rotation shaft 43 is rotated by the rotation of the electric motor 42 so that the drive member 44 can move forward. A first connecting rod 45 is rotatably attached to the tip of the drive member 44, and the other end of the first connecting rod 45 is rotatably attached to the front end side mounting portion 18 of the brake plate member 17. Yes. The second connecting rod 46 is rotatably attached to the electric motor 42 main body side, and the other end of the second connecting rod 46 is rotatably attached to the rear end side attaching portion 19 of the brake plate member 17. ing. The brake plate member 17 is supported by the first and second connecting rods 45 and 46 and is disposed in a substantially horizontal state on the bottom side of the vehicle body 3. In the normal state, the drive device 41 has a drive member 44 disposed on the rear side, and the brake plate member 17 is disposed in a horizontal state in the vicinity of the bottom surface of the vehicle body 3 so that there is no hindrance to running of the vehicle. ing.

  In the fourth embodiment configured as described above, upon receiving an input signal from the rotation sensor 22 attached to the wheel 2, it recognizes the emergency stop state in which the anti-lock brake system that the drive control device 21 relaxes operates. The drive member 44 is moved to the front side by driving a pair of electric motors 42 provided on the left and right in front of the bottom side of the vehicle body 3. Therefore, the first connecting rod 45 and the second connecting rod 46 rotate downward about the front end of the drive member 44 and the attachment portions 18 and 19 to the vehicle body bracket 3c, respectively. Therefore, when the brake plate member 17 is pressed downward and pressed against the road surface G, the brake plate member 17 comes into contact with the road surface G over a wide area, and a large frictional force is generated between them. As a result, also in the fourth embodiment, as in the first embodiment, since a very large braking force can be obtained instantaneously in response to an emergency stop, the vehicle immediately enters a stop state, and the braking distance is significantly shortened. Thus, slip accidents and rear-end collisions can be effectively prevented.

  Next, Example 5 will be described. FIGS. 14 and 15 schematically show the arrangement of the emergency stop device according to the fifth embodiment before and after operation of the brake plate member in front view, and FIG. 16 schematically shows the drive device in bottom view. It is shown. The emergency stop device is provided with a drive device 51 that is attached between the front and rear wheels 2 of the vehicle 1 and moves the brake plate member 55 made of a spring plate downward. The drive control device 21 is the same as in the first embodiment. .

  The drive device 51 is provided with a pair of cylinder devices 32 that are fixed to the vehicle body bracket 3c on both the left and right sides in front of the bottom of the vehicle body 3 and extend horizontally rearward. The drive rod 33 of the cylinder device 32 is full. It is arranged so that its tip is located on the rear side in a state where it is stretched. The brake plate member 55 is an elastically deformable spring plate, the front end of the spring plate is fixed to a connecting member 52 that connects the pair of cylinder device 32 bodies, and the rear end of the spring plate is the tip of the pair of drive rods 33. It is fixed to the connecting rod 53 to be connected, and is arranged in a substantially horizontal state on the bottom side of the vehicle body 3. In the normal state, the driving device 51 has the braking plate member 55 disposed in a horizontal state in the vicinity of the bottom surface of the vehicle body 3, so that there is no problem in traveling of the vehicle.

  In the fifth embodiment configured as described above, upon receiving an input signal from the rotation sensor 22 attached to the wheel 2, the emergency stop state in which the anti-lock brake system that the drive control device 21 relaxes operates is recognized. By driving a pair of cylinder devices 32 provided on the left and right in front of the bottom side of the vehicle body 3, the drive rod 33 is pulled to the full. As a result, the brake plate member 55, which is an elastically deformable spring plate, is compressed between the connecting rod 53 and the connecting rod 52 of the cylinder device 32 body and bent downward. For this reason, a bent middle wide area portion of the brake plate member 55 can be bent downward and pressed against the road surface G, and the brake plate member 55 comes into contact with the road surface G over a wide area. A large frictional force is generated. As a result, also in the fifth embodiment, as in the first embodiment, since a very large braking force is instantaneously obtained in response to an emergency stop, the vehicle immediately enters a stop state, and the braking distance is remarkably shortened. Thus, slip accidents and rear-end collisions can be effectively prevented.

  Next, Example 6 will be described. FIGS. 17 and 18 schematically show the arrangement before and after the operation of the driving device and the brake plate member of the emergency stop device according to the sixth embodiment, respectively, in front view, and FIG. 19 schematically shows the driving device in bottom view. It is shown. The emergency stop device is provided between the front and rear wheels 2 of the vehicle 1 and includes a drive device 61 that moves the brake plate member 55 made of a spring plate downward. The drive control device 21 is the same as that of the first embodiment. is there.

  The drive device 61 is provided with a pair of electric motors 42 that are rotational drive devices fixed to the vehicle body 3 on both the left and right sides in front of the bottom side of the vehicle body 3, and the rotation shaft of the electric motor 42 has a threaded groove. The rotating shaft 43 is integrally attached and extends rearward, and is rotatably fixed to the vehicle body side bracket 3d on the rear end side. A plate-like drive member 44 having a pair of screw holes (not shown) is attached to both the rotating shafts 43 by screwing in the screw holes. As a result, the rotation shaft 43 is rotated by the rotation of the electric motor 42 so that the drive member 44 can move forward. The brake plate member 55 has a front end of a spring plate fixed to a connecting rod 42a that connects a pair of electric motor 42 main bodies, and a rear end of the spring plate fixed to a drive member 44 so that the brake plate member 55 is in a substantially horizontal state on the bottom side of the vehicle body 3. Has been placed. In the normal state, the drive device 61 has the drive member 44 disposed on the rear side, and the brake plate member 55 is disposed in a horizontal state in the vicinity of the bottom surface of the vehicle body 3 so that there is no problem in traveling of the vehicle. ing.

  In the sixth embodiment configured as described above, upon receiving an input signal from the rotation sensor 22 attached to the wheel 2, it recognizes the emergency stop state in which the antilock brake system that the drive control device 21 relaxes operates. The drive member 44 is moved to the front side by driving a pair of electric motors 42 provided on the left and right in front of the bottom side of the vehicle body 3. As a result, the brake plate member 55, which is an elastically deformable spring plate, is compressed by the drive member 44 and the connecting rod 42a and bent downward. For this reason, a bent middle wide area portion of the brake plate member 55 can be bent downward and pressed against the road surface G, and the brake plate member 55 comes into contact with the road surface G over a wide area. A large frictional force is generated. As a result, also in the sixth embodiment, as in the first embodiment, a very large braking force can be obtained instantaneously in response to an emergency stop, so that the vehicle immediately enters a stop state, and the braking distance is remarkably shortened. Thus, slip accidents and rear-end collisions can be effectively prevented.

  Next, Example 7 will be described. 20 and 21 schematically show the arrangement of the emergency stop device according to the second embodiment before and after operation of the brake plate member in front view, and FIG. 22 schematically shows the drive device in bottom view. It is shown. The emergency stop device is provided between the front and rear wheels 2 of the vehicle 1 and includes a drive device 65 that moves the brake plate member 17 downward. The brake plate member 17 and the drive control device 21 are the same as in the first embodiment. is there. The driving device 65 is an airbag fixed to the vehicle body bracket 3 e on the bottom side of the vehicle body 3 between the front and rear wheels 2. A brake plate member 17 is fixed to the bottom surface of the driving device 65 in a horizontal state. The driving device 65 is folded in a flat state in a normal state, and supports the brake plate member 17 in the vicinity of the bottom surface of the vehicle body 3, so that there is no problem in traveling of the vehicle.

  In the seventh embodiment configured as described above, in response to an input signal from the rotation sensor 22 attached to the wheel 2, the drive control device 21 recognizes the emergency stop state in which the antilock brake system is operated, 3. By inflating the driving device 65 provided on the bottom side, the brake plate member 17 attached to the bottom surface of the driving device 65 can be pressed against the road surface G. Therefore, the brake plate member 17 comes into contact with the road surface G over a wide area, and a large frictional force is generated between them. As a result, also in the seventh embodiment, as in the first embodiment, since a very large braking force can be obtained instantaneously in response to an emergency stop, the vehicle immediately enters a stop state, and the braking distance is remarkably shortened. Thus, slip accidents and rear-end collisions can be effectively prevented.

  In the first to seventh embodiments, the drive control device 21 recognizes the emergency stop state in which the antilock brake system is operated, and drives the drive device provided on the bottom side of the vehicle body 3 to thereby enter the emergency stop state. Although the vehicle is properly stopped, the present invention is not limited to this. For example, a sensor that detects that the vehicle wheel is locked is provided, and the emergency stop state is detected when the wheel lock state is detected by the sensor, and the drive control device controls according to the detection result of the lock state. Can be done. Thus, when the vehicle enters an emergency stop state, the drive device is immediately driven by the control of the drive control device to move the brake plate member downward according to the detection result of the lock state by the lock state detection means. Therefore, the emergency stop device can be reliably operated in accordance with the emergency stop state where the operation is required. In addition, the specific structure and the like of the vehicle emergency stop device shown in each of the above embodiments are merely examples, and various modifications can be made without departing from the spirit of the present invention.

  According to the emergency stop device for a vehicle of the present invention, the drive device is immediately driven by the control of the drive control device according to the emergency stop state of the vehicle to move the brake plate member downward and press it against the road surface. A large area is brought into contact with the road surface, and a large frictional force is generated between the two. As a result, in the present invention, a very large braking force can be obtained instantaneously in response to an emergency stop, so that the vehicle immediately enters a stop state, the braking distance is significantly shortened, and slip accidents and rear-end collision accidents are effectively performed. This is useful because it can be prevented.

It is a top view which shows schematic structure of the emergency stop apparatus applied to the vehicle which is Example 1 of this invention. It is a front view which shows roughly the normal state of the emergency stop apparatus. It is a front view which shows the emergency stop state of the emergency stop device schematically. It is a bottom view which shows the emergency stop apparatus schematically. It is a front view which shows roughly the normal state of the emergency stop apparatus which is Example 2. FIG. It is a front view which shows the emergency stop state of the emergency stop device schematically. It is a bottom view which shows the emergency stop apparatus schematically. It is a front view which shows roughly the normal state of the emergency stop apparatus which is Example 3. FIG. It is a front view which shows the emergency stop state of the emergency stop device schematically. It is a bottom view which shows the emergency stop apparatus schematically. It is a front view which shows roughly the normal state of the emergency stop apparatus which is Example 4. FIG. It is a front view which shows the emergency stop state of the emergency stop device schematically. It is a bottom view which shows the emergency stop apparatus schematically. It is a front view which shows roughly the normal state of the emergency stop apparatus which is Example 5. FIG. It is a front view which shows the emergency stop state of the emergency stop device schematically. It is a bottom view which shows the emergency stop apparatus schematically. It is a front view which shows roughly the normal state of the emergency stop apparatus which is Example 6. FIG. It is a front view which shows the emergency stop state of the emergency stop device schematically. It is a bottom view which shows the emergency stop apparatus schematically. It is a front view which shows roughly the normal state of the emergency stop apparatus which is Example 7. FIG. It is a front view which shows the emergency stop state of the emergency stop device schematically. It is a bottom view which shows the emergency stop apparatus schematically.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Emergency stop device, 11 ... Drive device, 12, 13 ... Electric motor, 14, 15 ... Press bar, 17 ... Control board member, 21 ... Drive control device, 22 ... Rotation sensor, 25 ... Drive device, 26 ... Cylinder Device: 27 ... Drive rod 28: Pressing rod member 31 ... Drive device 32 ... Cylinder device 33 ... Drive rod 41 ... Drive device 42 ... Electric motor 43 ... Rotating shaft 44 ... Drive member 51 ... Drive device, 55 ... braking plate member, 61 ... drive device, 65 ... drive device.

Claims (10)

A brake plate member disposed between the front and rear wheels of the vehicle so as to extend horizontally in front and rear of the vehicle body bottom side, and a drive device attached to the vehicle body bottom side between the front and rear wheels to move the brake plate member downward And a drive control device for driving the drive device according to the emergency stop state and pressing the brake plate member against the road surface when the vehicle enters an emergency stop state. Stop device. The emergency stop state is synchronized with the operation of the antilock brake system of the vehicle, and the drive control device performs control according to the detection result of the detection means related to the antilock brake system. The emergency stop device for a vehicle according to claim 1. Lock state detection means for detecting that the vehicle wheel is locked is provided, and the occurrence of the emergency stop state is set as the detection of the wheel lock state by the lock state detection means. The vehicle emergency stop device according to claim 1, wherein the drive control device controls accordingly. The drive device includes a pair of rotary drive devices provided at the front and rear of the vehicle body bottom side, and is fixed to the rotary shaft of the rotary drive device at one end and rotatably attached to the brake plate member at the other end. The vehicular emergency stop device according to any one of claims 1 to 3, further comprising a pair of front and rear pressing rods slidable in the front-rear direction with respect to the brake plate member. The drive device is rotatably mounted at any one of the front and rear positions on the bottom side of the vehicle body and extends in the other direction of the front and rear, and can be rotated to either the front or rear side of the vehicle body bottom side. And a pressing rod member attached to the front end of the drive rod of the cylinder device on the front end side, and further attached to the lower end of the front end of the brake plate member. The emergency stop device for a vehicle according to any one of claims 1 to 3. The driving device is attached to one of the front and rear positions on the bottom side of the vehicle body and extends in the front and rear direction, and rotates between the front end of the driving rod of the cylinder device and the front and rear positions of the brake plate member. The first connecting rod that is movably connected, and the second connecting rod that rotatably connects the cylinder device main body side and the other front and rear positions of the brake plate member are provided. 4. The vehicle emergency stop device according to any one of items 1 to 3. The drive device is a rotation drive device attached at one of the front and rear positions on the vehicle body bottom side, a drive member disposed at the other front and rear position on the vehicle body bottom side, and rotation of the rotation drive device A conversion device that converts the movement of the drive member in the front-rear direction, a first connection rod that rotatably connects one position of the drive member and the front and rear of the brake plate member, the rotary drive device side, and the brake plate member 4. The vehicular emergency stop device according to claim 1, further comprising: a second connecting rod that rotatably connects the other front and rear positions. The drive device is a cylinder device that is attached to one of the front and rear positions on the bottom side of the vehicle body and extends in the other direction of the front and rear, the brake plate member is a spring plate that can be elastically deformed, and the length of the spring plate 4. The vehicle according to claim 1, wherein one end side in the direction is fixed to a tip of a drive rod of the cylinder device, and the other end side in the longitudinal direction is fixed to a main body side of the cylinder device. Emergency stop device. The drive device is a rotation drive device attached at one of the front and rear positions on the vehicle body bottom side, a drive member disposed at the other front and rear position on the vehicle body bottom side, and rotation of the rotation drive device A conversion device that converts the drive member to move in the front-rear direction, wherein the brake plate member is an elastically deformable spring plate, one end in the longitudinal direction of the spring plate is fixed to the drive member, and the other in the longitudinal direction. The vehicle emergency stop device according to any one of claims 1 to 3, wherein an end is fixed to the rotary drive device. The vehicle emergency stop device according to any one of claims 1 to 3, wherein the driving device is an airbag device, and the braking plate member is fixed to the airbag device at a bottom.

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