JP2001199317A - Vehicular emergency stop device and vehicle having emergency stop device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular emergency stop device capable of obtaining sure and large braking force by completely catching a road surface by a brake member in emergency. SOLUTION: This vehicular emergency stop device 20 installed on a vehicle 22 is featured by having a bearing 26 installable on the vehicle body rear under surface side, a brake member 31a and an arm member 28 being rotatably borne in a midway part in the longitudinal direction of a vehicle body by the bearing 26, installing the brake member 31a contacting with a road surface on one end side when rotating one end side toward the lower side from the front side of the vehicle body and forming a stopper part 28b abutting to a vehicle body rear under surface on the other end side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency stop device for a vehicle and a vehicle having the emergency stop device.

[0002]

2. Description of the Related Art A device shown in FIG. 6 is known as an emergency stop device for a vehicle when the vehicle slips on an ice burn or the like (Japanese Patent Laid-Open No. 8-188130). This device 10 is mounted on the lower surface side of the vehicle body. Arrow A
Is the traveling direction of the vehicle. The solenoid valve 11 is normally closed. When the driver depresses a brake pedal (not shown) in this state, pressure oil is transmitted to only a normal brake wheel cylinder (not shown) via the pipe 12, and a normal brake is operated. On the other hand, when the driver operates a predetermined switch in an emergency, the solenoid valve 11 opens, and the pipe 12 communicates with the cylinder 13. Therefore, when the driver steps on the brake pedal, the piston 14 moves, the arm 15 is turned in the direction of the road surface against the force of the return spring 16, and the projection 17 provided at the tip of the arm 15 becomes frozen on the road surface. And the braking force from the projection 17 acts in addition to the normal braking operation.

[0003]

In the above-mentioned conventional apparatus,
When resistance from the road surface is applied to the projection 17, a force is generated to push the piston 14 of the cylinder 13 back, so that the braking force is not sufficient. Particularly, in an emergency, when the driver's foot separates from the brake pedal, there is a problem that the braking force is lost.

The present invention has been made in order to solve the above-mentioned problems.
An object of the present invention is to provide a vehicle emergency stop device and a vehicle provided with an emergency stop device capable of completely catching a road surface by a brake member and reliably obtaining a large braking force.

[0005]

The present invention has the following arrangement to achieve the above object. That is, the vehicle emergency stop device according to the present invention is a vehicle emergency stop device mounted on a vehicle, and includes a bearing mountable on a lower surface side of a rear portion of a vehicle body, a brake member, and the bearings. When one end is turned downward from the front side of the vehicle main body, the brake member is brought into contact with the road surface at one end side, and the other end side is mounted. And an arm member formed with a stopper portion abutting on a lower surface of a rear portion of the vehicle body.

The locking device provided on the vehicle body locks the arm member at a position where one end of the arm member is rotated forward of the vehicle body. The arm member is substantially L at the one end side and the other end side.
It is characterized by being bent to form a letter. The vehicle emergency stop device according to claim 1 or 2. One end of the arm member is branched into two branches, and the plate-shaped brake members are attached to the distal ends of the two branch arms, respectively, and the distance between the two brake members is set to the front side of the vehicle body. It is characterized in that it is set to gradually open toward.

[0007] Further, the invention is characterized in that the two brake members are rotatably provided at a tip end of the branch arm at an intermediate portion. A tip of the plate-shaped brake member that contacts a road surface is formed in a round shape in a round shape. Further, a hard member is fixed to a portion of the plate-shaped brake member that contacts the road surface.

Further, a vehicle according to the present invention is a vehicle provided with an emergency stop device, wherein the emergency stop device is provided with a bearing, a brake member, and a bearing provided on a rear lower surface side of a vehicle body. The brake member is supported at an intermediate portion so as to be rotatable in the front-rear direction, and when one end side is turned downward from the front side of the vehicle body to the lower side, the brake member that comes into contact with a road surface is attached to the one end side, and the other end is mounted. An arm member having a stopper formed in contact with a lower surface of a rear portion of the vehicle main body, and a lock device provided on the vehicle main body side and fixing the arm member at a position where one end of the arm member is rotated forward of the vehicle main body. And a release device provided in a driver's seat and including a switch that is turned on by a driver's operation, and that releases the lock of the arm member by the lock device.

[0009] The apparatus is characterized in that the apparatus further comprises a return device which releases the lock by the lock device, lifts the arm member turned downward by its own weight, locks the arm member by the lock device, and returns to the original position. The return device is a winch including a wire having one end connected to the arm member, and a hoisting motor provided on the vehicle body and winding up the wire.

The arm member is bent at the one end and the other end so as to form a substantially L-shape. One end of the arm member is bifurcated, and the plate-shaped brake members are attached to the distal ends of the two branch arms, respectively, and the gap between the two brake members is directed toward the front side of the vehicle body. It is characterized in that it is set so as to open gradually gradually. The two brake members are rotatably provided at the middle of the distal end side of the branch arm. A tip of the plate-shaped brake member that contacts a road surface is formed in a round shape in a round shape. Further, a hard member is fixed to a portion of the plate-shaped brake member that contacts the road surface.

[0011]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a side view of the vehicle 22 when the emergency stop device 20 is not operated, and FIG. 2 is a side view of the vehicle 22 when the emergency stop device 20 is operated. The emergency stop device 20 is attached to the rear lower surface of the vehicle body 24 as shown in the figure. Preferably, the emergency stop device 20 is mounted on the lower surface side of the vehicle body 24 further behind the rear wheel 25. Reference numeral 26 denotes a bearing, which is firmly attached to the vehicle body 24 by a bolt 27. By mounting the bearing 26 on the vehicle body 24, the entire emergency stop device 20 is fixed to the vehicle body 24.

Reference numeral 28 denotes an arm member. Arm member 28
Has a substantially L-shape in side view. Arm member 2
Reference numeral 8 denotes a halfway portion of the vehicle, which is rotatably supported by a bearing 26 in the front-rear direction of the vehicle body 24. Reference numeral 30 denotes a rotation shaft. As shown in FIG. 3, one end of the arm member 28 is branched into two branches, and plate-shaped brake members 31a, 31a are attached to the distal ends of the two branched arms 28a, 28a, respectively. The arm member 28 is composed of two members in the illustrated example, but may be composed of one integral member. The brake members 31a, 31a are formed in a rectangular plate shape, and are preferably attached to the branch arms 28a, 28a at a middle part thereof so as to be rotatable in the front-rear direction by a rotation shaft 32.

The distance between the two brake members 31a is set so as to gradually increase toward the front of the vehicle body 24. Further, both brake members 31
In a and 31a, a tip portion 32b on the side in contact with the road surface is formed in a round shape in a round shape. Also, the brake member 31
A plate-like hard member 34 made of a hard alloy is fixed to the portions a and 31a that contact the road surface by fixing means such as bolts 35. The hard member 34 may not be plate-shaped, and may be made of a hard material composed of a plurality of pillars, and the tip of the hard member 34
1a, 31a so as to protrude from the brake member 31a,
31a may be embedded and provided. Alternatively, the entire brake members 31a, 31a may be formed of a hard material.

As shown in FIG. 2, both brake members 31
a, 31a are such that one end of the arm member 28 is connected to the vehicle body 24;
When it is turned downward from the front side, it comes into contact with the road surface and exerts a braking force. At this time, a stopper portion 28b is formed on the other end side of the arm member 28 so as to abut on the rear lower surface of the vehicle body 24. The stopper portion 28b has a protruding portion 28c that protrudes to the side of the arm member 28 so as to come into contact with a large area when the stopper portion 28b contacts the rear lower surface of the vehicle body 24.
It is preferable to have

When the emergency stop device 20 is not operated, one end of the arm member 28 (the side on which the brake member 31a is mounted) is pulled up so as to be substantially horizontal, and at that position, the vehicle body 24 side Are locked by a lock device 37 (FIG. 5) provided in the first embodiment. The lock device 37 illustrated in FIG. 5 comprises a rigidly formed electromagnetic solenoid 38. The movable iron core 39 of the electromagnetic solenoid 38 is normally urged by a coil spring (not shown) provided in the solenoid main body in a direction in which the tip protrudes from the solenoid main body.

At the end of the movable iron core 39, a support piece 42 is provided which can be rotated only upward from a horizontal position by a pin 40. The support piece 42 is urged to be positioned horizontally by a helical spring 43 disposed around the pin 40. On the other hand, hooks 44 are provided on the front ends of the branch arms 28a, 28a, respectively. When the branch arms 28a, 28a are pulled up by a winch described later, the hook 44 pushes up the support piece 42 against the urging force of the helical spring 43, and when the hook 44 reaches the open side, the support piece 42 returns to the horizontal position. And the hook 44 is
2 and can be supported so that one end of the arm member 28 is horizontal.

One ends of wires 46, 46 are connected to the front ends of the branch arms 28a, 28a.
The other ends of the wheels 6 and 46 can be hoisted by a winch 47 provided on the vehicle body 24 and having a hoist motor. With these wires 46 and winches 47,
The return device is configured, but the return device is not limited to this. As is clear from the above, in the present embodiment, the electromagnetic solenoid 38 and the winch are connected to the two branch arms 28.
a and 28a are provided two by two.

A switch 49 for releasing a lock device including the electromagnetic solenoid 38 and the like is provided in the driver's seat of the vehicle body 24 (FIGS. 1 and 2). In the present embodiment, the switch 49 is provided at a position where the brake pedal 50 is pressed by the brake pedal 50 and turned on when the brake pedal 50 is strongly depressed in an emergency. The switch 49 is not limited to this, and may be provided at an arbitrary position in the driver's seat that the driver can turn on by his / her own operation, for example, at a position of a steering wheel (not shown) mechanism. Further, a switch (not shown) for operating the winch 47 to wind up the wire 46 is provided in the driver's seat. While this switch is not turned on, the winch 47 can idle.

The configuration is as described above. In an emergency such as when the vehicle starts slipping, the brake pedal 50
When the driver steps on the switch strongly, or when the driver separately operates a switch provided near the steering wheel or the like, the electromagnetic solenoid 38 is operated, and the movable iron core 39 moves in the direction of the solenoid body against the urging force of the coil spring provided inside. To release the hook 44 from the support piece 42. That is, the lock of the arm member 28 by the lock device is released.

As a result, one end of the arm member 28 to which the brake member 31a is attached instantly rotates downward by its own weight, and the brake member 31a comes into contact with the road surface.
Since the stopper portions 28b and 28c on the other end abut against the lower surface of the vehicle body, the rotation of the arm member 28 is prevented.
The arm member 28 acts like a strut, and a strong braking force is exerted.

In particular, both brake members 31a, 31a
Since the gap is gradually opened toward the front end side and is provided in an inverted C shape, the two brake members 31a, 31a feel like hugging the road surface, the frictional force with the road surface becomes extremely large, and the A braking force is generated. Therefore, even when a slip occurs on a frozen road surface or when an emergency occurs when driving at a relatively high speed,
The vehicle can be stopped with a short mileage, and the more dangers can be avoided.

As described above, the brake members 31a, 31
If a is provided so as to be rotatable in the front-rear direction, even if the road surface has irregularities, the road surface follows the road surface and comes into contact with the road surface, thereby increasing the contact area.
It can also mitigate shock. In addition, by providing the tip of the contact portion of the brake member 31a with the road surface with a round shape, the brake member 31a can ride on even if the road surface has irregularities, so that the shock can be reduced. In addition, by providing the emergency stop device 20 at a position behind the rear wheel 25, the point of contact with the road surface becomes closer to the rear side, so that the vehicle can be prevented from spinning. The brake member 31a
Although the vehicle body 24 itself slightly rises when the vehicle comes into contact with the road surface, the length of the arm member 28 and the like are preferably set such that the rear wheel 25 comes into contact with the road surface.

When the emergency stop device 20 is returned to the original state, the vehicle is slightly retracted to release the brake member 31a from biting into the road surface, and the switch in the driver's seat is turned on as described above. The winch 47 may be operated, the wire 46 may be wound up, the arm member 28 may be raised, and the hooks 44 may be locked by the support pieces 42.

[0024]

As described above, according to the present invention, in an emergency,
The arm member pivots downward by its own weight and the brake member comes into contact with the road surface, and the arm member, the brake member and the stopper portion act like a stick on the road surface, so that an extremely large braking force is instantaneously exerted. Danger can be avoided.

[Brief description of the drawings]

FIG. 1 is a side view of a vehicle when an emergency stop device is not operated.

FIG. 2 is a side view of the vehicle when the emergency stop device is operated.

FIG. 3 is an explanatory perspective view showing a main part of the emergency stop device.

FIG. 4 is a partial side view showing a stopper portion of the arm member.

FIG. 5 is an explanatory diagram illustrating an example of a lock device.

FIG. 6 is an explanatory view showing a conventional emergency stop device.

[Explanation of symbols]

 Reference Signs List 20 emergency stop device 22 vehicle 24 vehicle body 25 rear wheel 26 bearing 28 arm member 28a branch arm 28b stopper portion 28c projecting portion 30 rotation shaft 31a brake member 32b rounded portion (tip portion) 34 hard member 37 locking device 38 electromagnetic solenoid 39 Movable iron core 42 Support piece 44 Hook 46 Wire 47 Winch 49 Switch 50 Brake pedal

Claims (15)

[Claims] 1. An emergency stop device for a vehicle mounted on a vehicle, comprising: a bearing mountable on a lower surface of a rear portion of a vehicle body; a brake member; When one end is turned downward from the front side of the vehicle main body, the brake member that comes into contact with the road surface is attached to the one end side, and the other end side abuts on the rear lower surface of the vehicle main body. An emergency stop device for a vehicle, comprising: an arm member provided with a stopper portion. 2. The vehicle according to claim 1, wherein the arm member is locked at a position where one end of the arm member is rotated forward of the vehicle body by a locking device provided on the vehicle body side. Emergency stop device. 3. The emergency stop device for a vehicle according to claim 1, wherein the arm member is bent so as to be substantially L-shaped at the one end side and the other end side. 4. An end portion of the arm member is branched into two branches, and the plate-shaped brake members are attached to tip ends of the two branch arms, respectively, and a distance between the two brake members is set to a vehicle body. The opening is gradually widened toward the front side of the vehicle,
4. The emergency stop device for a vehicle according to 2 or 3. 5. The emergency stop device for a vehicle according to claim 4, wherein the both brake members are rotatably provided at a distal end side of the branch arm at an intermediate portion. 6. The emergency stop device for a vehicle according to claim 4, wherein a tip portion of the plate-shaped brake member that contacts a road surface is formed in a round shape. 7. The emergency stop device for a vehicle according to claim 4, wherein a hard member is fixed to a portion of the plate-shaped brake member that comes into contact with a road surface. 8. A vehicle provided with an emergency stop device, wherein the emergency stop device is rotatable in the front-rear direction of the vehicle main body by a bearing provided on a rear lower surface side of a vehicle main body, a brake member, and the bearing. When the one end is turned downward from the front side of the vehicle body, the brake member that comes into contact with the road surface is attached to the one end side, and the rear bottom surface of the vehicle body is mounted on the other end side. An arm member provided with a stopper portion abutting on the vehicle body, a lock device provided on the vehicle body side, and a lock device for fixing the arm member at a position where one end side of the arm member is rotated to the front side of the vehicle body, provided on the driver's seat And a release device for releasing a lock of the arm member by the lock device, the switch including a switch turned on by a driver's operation. 9. A return device for releasing the arm member which has been unlocked by the lock device and rotated downward by its own weight, locks the arm member by the lock device, and returns the arm member to its original position. A vehicle comprising the emergency stop device according to claim 8. 10. The winch according to claim 9, wherein the return device is a winch including a wire having one end connected to the arm member, and a hoisting motor provided on the vehicle body and winding up the wire. A vehicle equipped with an emergency stop device. 11. The emergency stop device according to claim 8, wherein the arm member is bent so as to form a substantially L-shape at the one end side and the other end side. Vehicle. 12. One end of the arm member is bifurcated, and the plate-shaped brake members are attached to the distal ends of the two branch arms, respectively, and the distance between the two brake members is set to a vehicle body. The vehicle provided with the emergency stop device according to claim 8, 9, 10 or 11, wherein the vehicle is set so as to be gradually widened toward a front side of the vehicle. 13. The vehicle equipped with the emergency stop device according to claim 12, wherein the two brake members are rotatably provided at a tip end of the branch arm at an intermediate portion. 14. The vehicle provided with the emergency stop device according to claim 12, wherein a tip of the plate-shaped brake member that contacts a road surface is formed in a round shape in a round shape. 15. A vehicle provided with an emergency stop device according to claim 12, wherein a hard member is fixed to a portion of said plate-shaped brake member that comes into contact with a road surface.