JP6766765B2 - Pedal retreat suppression mechanism - Google Patents

Description

The present invention relates to a pedal retreat suppression mechanism, which is a mechanism for suppressing displacement of a vehicle pedal to the rear of the vehicle when the front portion of the vehicle body is deformed due to a vehicle collision.

When the front part of the vehicle body is deformed due to a vehicle collision or the like, the pedals for the vehicle, such as the accelerator pedal, the brake pedal, the clutch pedal, etc., are displaced to the rear of the vehicle due to the deformation of the front part of the vehicle body. To do. Then, the displacement of the pedal to the rear of the vehicle may put a large load on the driver's foot. Therefore, various measures have been taken in order to deal with a vehicle collision.

Generally, an operating device operated by the driver's pedaling force for the purpose of transmitting the driver's pedaling force applied from the pedal stepping portion to the portion on the front side of the vehicle from the portion where the pedal for the vehicle is provided. Is provided. Then, in a vehicle equipped with the operating device, the operating device and the pedal arm are connected by a rod-shaped pedaling force transmission member (transmission rod) extending in the front-rear direction of the vehicle, and the pedal arm swings due to the pedaling force of the driver. The pedaling force is transmitted to the operating device via the transmission rod. In a vehicle having such a configuration, when the front part of the vehicle body is deformed due to a collision, the operating device and the pedal arm are connected by a transmission rod, so that the pedal arm also moves with the displacement of the operating device to the rear of the vehicle. There is a problem that it is displaced backward. Therefore, in the following Patent Documents 1 and 2, when the pedal is displaced to the rear of the vehicle and comes into contact with the foot of the carrier, the amount of displacement of the pedal to the rear of the vehicle is reduced in order to reduce the load of the contact. The mechanism for reducing the displacement is described. Specifically, the mechanism operates when the brake pedal is brought close to the instrument panel reinforcement due to deformation of the front part of the vehicle body due to a vehicle collision, and the push rod (transmission rod) of the brake booster (actuator) operates. It is configured to apply a pressing force in the direction intersecting the axial direction of the brake rod, and the amount of displacement of the brake pedal to the rear of the vehicle is reduced by bending or disconnecting the push rod. ing.

Japanese Unexamined Patent Publication No. 2014-186369 JP-A-2015-72504

For example, the actuating device may have an input portion formed in a tubular shape, and may be connected with a transmission rod inserted inside the input portion. In such a configuration, if the displacement of the transmission rod in the direction intersecting the axial direction is insufficient, the load on the driver may not be sufficiently reduced. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a pedal retreat suppressing mechanism capable of effectively suppressing the displacement of the pedal to the rear of the vehicle.

In order to solve the above problems, the pedal retreat suppression mechanism of the present invention operates when an operating device mainly composed of a pedal and a vehicle body component provided on the rear side of the vehicle from the operating device approach each other in the vehicle front-rear direction. A rod pressing mechanism for applying a pressing force in the crossing direction, which is the direction in which the transmission rods intersect in the axial direction, is provided, and the input portion of the actuator displaces the transmission rod in the intersecting direction by the pressing force of the rod pressing mechanism. At that time, it is characterized in that it has a fragile portion for deforming itself in the crossing direction as the transmission rod is displaced in the crossing direction.

According to the pedal retreat suppression mechanism of the present invention, the front part of the vehicle body is deformed due to the vehicle collision, and when the transmission rod is displaced in the crossing direction by the rod pressing mechanism, the input part of the operating device is deformed. Displacement of the transmission rod in the crossing direction is allowed. Therefore, even if the transmission rod is inserted and connected to the inside of the input portion of the actuator, the displacement of the transmission rod in the crossing direction is not hindered at the time of the vehicle collision, and the displacement of the pedal to the rear of the vehicle is not hindered. It can be effectively suppressed.

It is a figure which shows the outline of the brake device which adopted the pedal retreat suppression mechanism which is an Example of this invention. It is a side view which shows the main part of the pedal retreat suppression mechanism which is an Example of this invention in an enlarged manner. It is a side view which shows the state which the pedal retreat suppression mechanism which is an Example of this invention is activated.

Hereinafter, as a mode for carrying out the present invention, an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following examples, and can be carried out in various embodiments with various modifications and improvements based on the knowledge of those skilled in the art.

FIG. 1 shows a main part of a vehicle provided with the pedal retreat suppressing mechanism 10 according to the embodiment of the present invention. The vehicle is provided with a brake operating device 12. The brake operation device 12 is an operation unit of the brake device, and is for performing a brake operation by the pedaling force of the driver. The brake operating device 12 includes a brake pedal 14, a pedal bracket 16 that oscillates the brake pedal 14, and a return spring 18 for applying an operating reaction force to the brake pedal 14. It is a so-called hanging type brake operating device.

The pedal bracket 16 includes a base portion 20 that serves as a base for attachment to the vehicle body, a pair of side plate portions 22 that extend parallel to the rear of the vehicle from the base portion 20, and an upper edge of the pair of side plate portions 22. It is configured to include a top plate portion 24 for connecting the above and a bracket portion 26 extending downward from the tip portion on the rear side of the vehicle. The brake pedal 14 (hereinafter, may be simply abbreviated as "pedal 14") is generally composed of a pedal arm 30 extending in the vertical direction and a pedal pad 32 as a tread provided at the lower end of the pedal arm 30. Will be done. The pedal 14 is oscillatingly held at the upper end of the pedal arm 30 by being pivotally supported by a rotating shaft 40 provided in a state of being passed to a pair of side plate portions 22 of the pedal bracket 16. Has been done. Then, by applying the pedaling force of the driver from the pedal pad 32, the vehicle is swung in the front-rear direction of the vehicle.

The return spring 18 is arranged between the pedal 14 and the rear end side of the pedal bracket 16, specifically, between the pedal arm 30 and the bracket portion 26 of the pedal bracket 16. The return spring 18 is a tension coil spring, which is extended as the pedal 14 is depressed, and is urged in a direction of returning the pedal 14 to the neutral position.

The brake operating device 12 is attached to the vehicle body at the pedal bracket 16. More specifically, the pedal bracket 16 is fixedly supported on the vehicle interior side, that is, the vehicle rear side surface of the dash panel 50, which is a member serving as a partition wall separating the engine room and the vehicle interior of the vehicle in the base portion 20. ing.

Further, on the engine room side of the dash panel 50, a master cylinder 54 is provided that converts the pedaling force of the driver into hydraulic pressure and transmits it to the brake cylinders corresponding to each wheel. As shown in FIG. 2, the master cylinder 54 is fixedly supported on the engine room side of the dash panel 50, that is, on the front side of the vehicle, with the rear end side protruding into the vehicle interior. More specifically, the input piston 56, which is the input portion of the master cylinder 54, extends rearward. The input piston 56 of the master cylinder 54 and the pedal 14 are connected by a push rod 60.

The front end of the push rod 60 is connected to the input piston 56 of the master cylinder 54, and the rear end is connected to the pedal arm 30 of the pedal 14 in a state of extending in the front-rear direction of the vehicle. Specifically, the input piston 56 has a covered cylindrical shape that opens rearward, and the front end of the push rod 60 is connected to the inside of the input piston 56 with the front end side of the push rod 60 inserted inside. Has been done. On the other hand, a clevis 62 is connected to the rear end of the push rod 60, and the pedal arm 30 and the rear end of the push rod 60 are connected by the clevis 62.

With the above configuration, when the pedal 14 is swung toward the front of the vehicle by the pedaling force of the driver, the push rod 60 is moved toward the front of the vehicle in the axial direction. As the push rod 60 advances, the input piston 56 of the master cylinder 54 is advanced, and input to the master cylinder 54 is performed. That is, when the pedal 14 is swung by the pedaling force of the driver, the pedaling force is transmitted to the master cylinder 54 via the push rod 60, and the master cylinder 54 is an operating device operated by the pedaling force of the driver. , The push rod 46 functions as a transmission rod.

Next, consider a case where a vehicle equipped with the above-mentioned braking device collides and the front portion of the vehicle body is deformed. In such a case, the master cylinder 54 and the dash panel 50 supporting the master cylinder 54 may be displaced to the rear of the vehicle due to the deformation of the front portion of the vehicle body. That is, the brake operating device 12 fixedly supported by the dash panel 50 may be displaced toward the rear of the vehicle, and the pedal 14 may come into contact with the driver's foot. Furthermore, since the pedal arm 30 is supported from the front side by the push rod 60 extending in the front-rear direction, the load when the pedal 14 comes into contact with the driver's foot may be relatively large. It is.

Therefore, in this vehicle, in order to suppress the displacement of the brake pedal 14 to the rear side of the vehicle in the event of a vehicle collision, the brake pedal retreat suppression mechanism 10 (hereinafter, simply referred to as "reverse suppression mechanism 10") may be abbreviated. There is) is installed. The reverse rotation suppressing mechanism 10 is mainly composed of a rotary lever 70, and the rotary lever 70 is rotatably supported by a pedal bracket 16 around an axis extending in the left-right direction of the vehicle. Further, the rotary lever 70 generally has a shape extending in the vehicle width direction from the vehicle front end of the main body 72 extending in the vehicle front-rear direction, and the vehicle front end, that is, the vehicle width. The portion extending in the direction is positioned below the portion where the push rod 60 and the clevis 62 are connected.

On the other hand, the rear side of the main body 72 of the rotary lever 70 has a shape extending downward from the end on the rear side of the vehicle. As shown in FIG. 1, on the vehicle rear side of the brake operating device 12, each of both ends in the vehicle width direction is used as a vehicle body component member fixed to each of the side members on both sides of the vehicle body (not shown). An instrument panel reinforcement 80 (hereinafter, may be abbreviated as "instrument panel R / F80") is provided, and an extension portion 82, which is a portion of the main body portion 72 of the rotary lever 70 extending downward from the rear side of the vehicle, is provided. , The instrument panel R / F80 is located on the front side of the vehicle.

When a vehicle equipped with the pedal retreat suppression mechanism 10 collides and the master cylinder 54 and the dash panel 50 supporting the master cylinder 54 are displaced to the rear of the vehicle due to deformation of the front part of the body, the brake operating device 12 together with the dash panel 50 Is also displaced to the rear of the vehicle. Since the rearward displacement of the instrument panel R / F80 is smaller than the rearward displacement of the dash panel 50, the brake operating device 12 is brought closer to the instrument panel R / F80 by the rearward displacement of the vehicle. become. Therefore, when the brake operating device 12 is displaced to the rear of the vehicle, as shown in FIG. 1, the rotary lever 70 supported by the pedal bracket 16 comes into contact with the instrument panel R / F80, and the extension portion 82 of the rotary lever 70 Operates so as to enter the lower side of the instrument panel R / F80. That is, the rotary lever 70 is rotated downward on the rear side of the vehicle and upward on the front side of the vehicle.

When the rotary lever 70 is rotated, the front end of the rotary lever 70 comes into contact with the lower side of the clevis 62, and an upward force is applied to the portion where the clevis 62 and the push rod 60 are connected. That is, the rotary lever 70 is configured to deform the push rod 60 by applying a pressing force, which is a force in the direction intersecting the axial direction, to the push rod 60. Therefore, the pedal retreat suppressing mechanism 10 is provided with a rod pressing mechanism mainly composed of the rotary lever 70.

Although the clevis 62 is generally U-shaped in a plan view, a flange portion 90 extending toward the rear of the vehicle is formed on the lower end side, so that the force from the rotary lever 70 is easily received. .. Further, the push rod 60 is formed in a hollow shape on the rear side of the vehicle, and is easily deformed.

As shown in FIG. 2, since the front end of the push rod 60 is connected inside the input piston 56 of the master cylinder 54, when an upward pressing force acts on the vehicle rear side of the push rod 60, the front end is used as a fulcrum. It will be rotated and transformed into a dogleg shape. Since the front side of the vehicle is inserted into the input piston 56, the push rod 60 comes into contact with the upper side of the opening of the input piston 56 when deformed. However, in the present vehicle, the input piston 56 is recessed on the inner peripheral surface on the rear side of the vehicle, and is provided with a fragile portion 92 having a thickness thinner than other portions. Therefore, when the push rod 60 is deformed, the input piston 56 is also deformed at the fragile portion 92, as shown in FIG. Therefore, in the pedal retreat suppressing mechanism 10, the input piston 56 of the master cylinder 54 does not hinder the deformation of the push rod 60, and the displacement of the pedal 14 to the rear of the vehicle can be effectively suppressed. -ing

10: Pedal retreat suppression mechanism 12: Brake operating device 14: Brake pedal 16: Pedal bracket 30: Pedal arm 32: Pedal pad [Tread] 50: Dash panel [Branch] 54: Master cylinder [Operating device] 56: Input piston [Input part] 60: Push rod [Transmission rod] 70: Rotating lever [Rod pressing mechanism] 72: Main body part 80: Instrument panel reinforcement [Body component] 90: Flange part 92: Fragile part

Claims (1)

It has (A) (a-1) a pedal with a tread at the lower end and (a-2) a pedal bracket that holds the pedal so that it can swing in the front-rear direction, and the front side of the vehicle in the passenger compartment An operating device provided on the rear side of the vehicle of the partition partition, and (B) an operating device fixed to the front side of the vehicle from the operating device of the vehicle body and operated by the pedaling force of the driver applied to the pedal. (C) Vehicle collision in a vehicle provided with a transmission rod extending in the front-rear direction, connecting the pedal and the input portion of the operating device, and transmitting the pedaling force of the driver applied to the pedal. It is a pedal retreat suppressing mechanism for suppressing the displacement of the pedal to the rear of the vehicle at the time.
The input portion of the operating device is formed in a tubular shape, and is connected in a state where the vehicle front side end portion of the transmission rod is inserted therein.
The pedal retreat suppression mechanism
An intersection direction in which the operating device and a vehicle body component provided on the rear side of the operating device approach each other in the front-rear direction of the vehicle due to a vehicle collision and intersect the transmission rod in the axial direction. Equipped with a rod pressing mechanism that applies the pressing force of
The input unit of the operating device
A pedal retreat suppressing mechanism having a fragile portion for deforming itself with the displacement of the transmission rod when the transmission rod is displaced by the pressing force of the rod pressing mechanism.

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