JP2000335384A - Emergency braking device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely stop a vehicle by allowing a vehicle stopper to be bitten between a tire and the road surface when a slip is generated when a brake is applied. SOLUTION: One end side of an expansion arm 3 using a pantograph mechanism is mounted on a fixing member to a vehicle in an expanded condition of the expansion arm 3 from its folded and stored condition, the elasticity is given to the expansion arm 3 in the direction to be constantly expanded by the spring 2, a locking mechanism 5 to keep the folded condition of the expansion arm 3 is maintained in an attachable/detachable manner is provided on the fixing member 2, and a vehicle stopper 4 is mounted on a tip of the expansion arm 3. When a slip is generated if a brake is applied, the locking mechanism 5 is released, the vehicle stopper 4 is allowed to be bitten between the tire and the road surface by expanding the expansion arm 3 to stop the slip.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency braking device which is mounted on a vehicle such as an automobile and, when a slip occurs during braking, cuts a wheel stop between a wheel and the ground to reliably stop the vehicle.

[0002]

2. Description of the Related Art When a vehicle is running on a slippery road surface, for example, on a frozen road surface or a wet road surface, a slip occurs between a locked tire and the road surface. The car is no longer steerable and becomes extremely dangerous.

Conventionally, the occurrence of slip during braking of an automobile is controlled by controlling the locking of front and rear wheels with an ABS system mounted on the automobile.

[0004]

SUMMARY OF THE INVENTION However, ABS
Even on vehicles equipped with the system, when braking on a frozen road or a road wet with rainwater, the entire vehicle slips, and it is not possible to completely prevent the occurrence of slip, and the ABS system It is extremely dangerous in vehicles without.

It is an object of the present invention to provide an emergency braking device for a vehicle which, when a slip occurs when a brake is applied, causes a wheel stop to bite between a tire and a road surface to reliably stop the vehicle. It is in.

[0006]

According to a first aspect of the present invention, there is provided a telescopic arm using a pantograph mechanism as a fixing member to a vehicle, wherein one end of the telescopic arm is folded and stored. The telescopic arm is attached to the telescopic arm so that it can be extended from the state, and the telescopic arm is provided with elasticity in a direction in which the telescopic arm is always extended by a spring. The vehicle employs a structure in which a wheel stop is attached to the tip of the vehicle so as to bite between the wheel of the vehicle and the ground.

According to a second aspect of the present invention, in the first aspect of the present invention, the telescopic arm comprises a plurality of crosslinks pivoted at the center which are sequentially pivotally connected at ends of the links to form a pantograph-shaped telescopic body. The telescopic arm is formed so that the pivoting portions of the links are connected to each other by a shaft so that the telescopic body is opposed to both sides. Of the other link is pivotally fixed to the fixing member, and the other end of the link is attached so as to be movable along the elongated hole provided in the fixing member, and the locking mechanism is pivotally pivotable to the fixing member. A notch for engaging the shaft of the contracted telescopic body is provided in the stopped locking claw, and elasticity is provided to the locking claw by a spring in a direction in which the notch is always engaged with the shaft. It is formed by connecting an operation member for locking release to the pawl, Contraction operation means at one end of the telescopic arm is obtained by employing the structure linked.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in the figure, an emergency braking device 1 includes a fixing member 2 for a vehicle, a telescopic arm 3 having one end attached to the fixing member 2, and a distal end of the telescopic arm 3, which has a flat lower surface and a distal end. And a locking mechanism 5 for holding the contracted state of the telescopic arm 3 on the fixed member 2.

The fixing member 2 is formed in a downward U-shape using a metal plate. For example, by fixing the emergency braking device 1 to the rear wheel B as shown in FIG. Is located diagonally above and forward of

The telescopic arm 3 uses a plurality of cross links 6 in which two links are pivoted at the center at the center, and the ends of each link of the cross link 6 are pivotally connected in sequence to form a pantograph-shaped telescopic body 7. The stretchable members 7 are opposed to both sides, and the pivoted portions of the links are connected to each other by the shaft body 8. From the extended state in which the cross links 6 are closed and linearly arranged as shown in FIG. Each cross link 6 as shown in FIG.
Are closed and can be changed to a contracted state in which they are folded so as to overlap each other.

The telescopic arm 3 is mounted on the fixed member 2 at one end by connecting the end of one link of the cross link 6 located at the end to the upper position of both opposing walls 2a of the fixed member 2. A long hole 1 which is pivotally attached to the body 9 and the other end of the link is provided on both opposed walls 2a of the fixing member 2 in an inclined manner.
0 is attached by a shaft body 11 so as to be able to move along the axis 0, and when the telescopic arm 3 expands and contracts, the other end of the other link is elongated.
Will move up and down.

The telescopic arm 3 is always extended by a spring 12 provided between a shaft 9 erected between the opposed walls 2a of the fixed member 2 and a shaft 8 pivotally fixed at the center of the cross link 6. The elasticity is given in such a direction that the car stops 4 attached to the front end in the extended state have such a length as to bite between the rear wheel B and the ground and the arrangement condition for the car A.

The locking mechanism 5 pivotally locks an L-shaped locking claw 13 at a lower position between the two opposing walls 2a of the fixing member 2 so as to swing. Notch 14 in which the shaft 11 of the contracted telescopic arm 3 engages
A notch 14 with a spring 15
Is formed by connecting a wire 16 serving as an operation member for locking release to the end of the locking claw 13. The wire 16 may be a pulley or the like as appropriate. When the wire 16 is pulled, the notch 14 of the locking claw 13 is disengaged from the shaft 11 so that the telescopic arm 3 is automatically extended by the extension elasticity. .

A wire 17 is connected to the rear end of the telescopic arm 3 as a means for contracting the telescopic arm 3. Specifically, the wire 17 is connected to a shaft 11 that can move along the long hole 10, and is wound around a mounting shaft of the locking claw 13, and then, as appropriate, through a pulley or the like, the driver's seat of the automobile. When the wire 17 is pulled, the shaft body 11 is pulled down, whereby the telescopic arm 3 expands at a portion where the root side cross link 6 is attached to the fixing member 2, and all the cross links 6 are folded. The telescopic arm 3 contracts, and the shaft body 11 that has descended is automatically engaged with the notch 14 of the locking claw 13, so that the contracted state of the telescopic arm 3 is maintained.

The emergency braking device 1 according to the present invention is constructed as described above. As shown in FIG. 3, the emergency braking device 1 is attached to the lower portion of the floor of the vehicle A by the fixing member 2 so as to be located in front of the upper portion of the rear wheel B. During traveling, the wire 17 as the contraction operation means is pulled, and the contracted telescopic arm 3 is held by the engagement between the locking claw 13 and the shaft 11. In this state, the bogie 4 is positioned above the ground by the contraction of the telescopic arm 3 and does not hinder the running of the automobile A at all.

When a vehicle is running and a brake is applied on a slippery road surface, if the wheels are locked and slipping occurs and the steering wheel cannot be turned on, the driver releases the locking release in the driver's seat. Pull the wire 16.

When the wire 16 is pulled, the notch 14 of the locking claw 13 is disengaged from the shaft 11 of the telescopic arm 3 to release the holding of the telescopic arm 3. The body 11 rises and automatically and quickly extends toward the lower part of the rear wheel B, and the wheel stopper 4 attached to the tip of the body 11 has a wedge between the tire of the rear wheel B and the ground as shown in FIG. As described above, the lower surface of the bollard 4 is pressed against the ground, and a large contact area is secured, so that the slip of the rear wheel B can be eliminated instantaneously and the automobile A can be stopped.

As described above, the vehicle generally travels at a low vehicle speed on a slippery road surface.
Is driven like a wedge between the tire of the rear wheel B and the ground, so that the vehicle A can be stopped immediately without giving a large impact.

When the vehicle A stops and restarts, the wire 17 as a contraction operating means may be pulled, and the extension of the telescopic arm 3 is contracted by pulling the wire 17, and the wheel stopper 4 is connected to the tire of the rear wheel B. Pull out from between the ground, telescopic arm 3
Is contracted and the contracted state is maintained by the engagement between the locking claw 13 and the shaft body 11, so that the vehicle A can be started without any trouble.

The emergency braking device 1 can be used not only for a passenger car as shown in the figure, but also for various vehicles using tires.

[0022]

As described above, according to the present invention, the telescopic arm using the pantograph mechanism is attached to the fixing member to the vehicle so that it can be extended from the folded storage state.
The telescopic arm is provided with elasticity in a direction in which the telescopic arm is always extended by a spring, and a locking mechanism is provided on the fixing member so as to be capable of engaging and disengaging the foldable state of the telescopic arm. Since a car stop is installed to cut into the gap, when the vehicle is running, if the brake is applied on a slippery road surface, if the wheel locks and slips and the steering wheel does not work,
Just by releasing the locking mechanism, the telescopic arm automatically and quickly extends, and the wheelchair attached to its tip enters like a wedge between the wheel and the ground, and the wheelchair moves against the ground. By contacting the lower surface and securing a large ground contact area, the vehicle can be stopped instantly without slipping of wheels, preventing accidents due to slipping, and improving the safety of driving the vehicle. .

Further, by adopting the telescopic arm of the pantograph mechanism, there is an advantage that the folded and stored state can be made compact, and there is little place restriction on the mounting to the vehicle.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an extended state of an emergency braking device.

FIG. 2 is a front view showing a contracted state of the above.

FIG. 3 is a front view showing a contracted state in which the emergency braking device is attached to the automobile.

FIG. 4 is a front view showing an extended state in which the emergency braking device is attached to the automobile.

[Explanation of symbols]

 Reference Signs List 1 emergency braking device 2 fixing member 3 telescopic arm 4 car stop 5 locking mechanism 6 cross link 7 telescopic body 8 shaft 9 shaft 10 long hole 12 spring 13 locking claw 15 spring 16 wire 17 wire

Claims (2)

[Claims] At least one end of a telescopic arm using a pantograph mechanism is attached to a fixing member to a vehicle so that the telescopic arm can be extended from a folded and stored state of the telescopic arm. , And
An emergency braking device for a vehicle, comprising: a locking mechanism for removably holding a folding state of a telescopic arm on the fixing member; and a brace for cutting into a tip of the telescopic arm between a vehicle wheel and the ground. 2. The telescopic arm comprises a plurality of crosslinks pivoted at the center, which are sequentially pivotally connected at the ends of the links to form a pantograph-shaped telescopic body. The telescopic arm is formed so as to be connected to the fixing member at one end side, and the end of one link of the cross link located at the end pivots to the fixing member, and The end of the link is attached so that it can move along the long hole provided in the fixed member, and the locking mechanism is a retractable elastic body that is contracted by a locking claw that is swingably pivoted to the fixed member. A notch is provided for engaging with the shaft body, and a spring is provided to the locking claw to provide elasticity in a direction in which the notch always engages with the shaft body, and an operation member for unlocking is connected to the locking claw. Connected to one end side of the telescopic arm. The emergency braking device for a vehicle according to claim 1.