The present disclosure is related to pedal systems for automotive vehicles, and particularly to injury mitigation automotive pedal systems.
This section provides background information related to the present disclosure which is not necessarily prior art.
A lever arm with a pedal can be provided in a vehicle to allow a driver to operate a throttle to accelerate the vehicle, apply the brake system to decelerate the vehicle, and a clutch to disengage and engage gears. The pedals are engaged by a driver's foot while the driver sits in a seat of the vehicle and are generally placed near a dashwall and/or a floor board of the vehicle. During an automotive collision, the pedals may potentially be forced against a driver's foot due to movement of the driver or movement of the pedals during the collision. During a collision, for example a front or offset collision, the engine compartment may move towards the passenger compartment and cause the pedals to move towards the driver.
This section provides a general summary of the disclosure, and is not a comprehensive disclosure of its full scope or all of its features.
An automotive vehicle during a collision can protect a driver and occupants of a passenger compartment of an automotive vehicle. During a frontal collision, an engine compartment may move towards the passenger compartment of the vehicle including moving a dashboard or firewall towards the passenger compartment. Components that are interconnected with the dashboard or the firewall can also, therefore, move towards the passenger compartment. It can be selected to allow various components that are attached fixedly to the dashboard or the firewall to absorb energy or move away from the passenger compartment during a frontal collision.
A pedal system or assembly can be provided to allow the driver of an automotive vehicle to operate the automotive vehicle (also referred to as a vehicle or automobile for the following discussion). During a frontal collision of sufficient force the pedal assembly that is fixed to the dash wall or the firewall can move towards the passenger compartment of the automotive vehicle. Accordingly, the pedal assembly can be designed to include a portion that will disengage or move to allow at least a foot engaging portion of the pedal to discontinue movement towards the passenger and/or allow movement of the pedal towards the engine compartment and away from the passenger compartment in the automotive vehicle. As discussed further herein, the pedal lever arm of the pedal assembly, however, can remain engaged to the components that allow for operation of a vehicle system with the pedal (e.g. brake application and clutch system) after the collision.
Further areas of applicability will become apparent from the description provided herein. The description and specific examples in this summary are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.
FIG. 3Aa is a detail view of the bracket in circle 3Aa in
FIG. 3Bb is a detail view of the bracket in circle 3Bb in
Corresponding reference numerals indicate corresponding parts throughout the several views of the drawings.
Example embodiments will now be described more fully with reference to the accompanying drawings.
It will be understood that the following discussion is related to any appropriate vehicle that allows for at least a driver to be positioned within a passenger compartment of an automotive vehicle. Although a passenger vehicle, such as an automotive sedan, is illustrated in the various figures for the following discussion, it is understood that the present teachings may be adapted for use in any appropriate vehicle (e.g. truck or tractor).
With reference to
With continuing reference to
For example, operation of the brake lever 34 can push a brake push rod 47 that is coupled to the brake coupler 40 through an opening 48 in the pedal bracket 32. The brake rod 47 extends from the brake coupler 40 to a portion of the brake assembly 49 (in
With continuing reference to
A connection bracket 76 can also be provided to be positioned over the brake lever arm 34 and the brake coupler 40, as illustrated in
Additionally, a first fixation member (also referred to as a pin) 80 and a second fixation member (also referred to as a pin) 82 can be provided to pass through the bracket 76 in a first fixation bore 84 and a second fixation bore 86, respectively. The two fixation bores 84, 86 can be elongated bores that extend along respective axes 85, 87. The two axes 85, 87 can be aligned and further aligned along an axis D, discussed herein. The first pin 80 can include a head 88 that will not pass through the bore 84 and the second pin 82 can include a head 90 that will not pass through the bore 86.
Further, at least one or both of the first fixation bore 84 and the second fixation bore 86 can include a weakened portion or wall and/or partial walls separating a first fixation section and a second fixation section, as illustrated in
On the counter side or opposite of the coupler 40 and the connection bracket 76, a second pair of bores 84′ and 86′ can allow a first passing end 94 of the first pin 80 and a second passing end 96 of the second pin 82 to pass. Clips 100 and 102 can engage grooves in the first pin 80 and the second pin 82 to hold them in place after they have passed through the bracket 76.
The second pair of bores 84′ and 86′ can also include a weakened portion, including partial or complete walls, as illustrated in
The connection bracket 76 includes the first and second passages 84 and 86, in the respective portion 76a, 76b, to allow passage of the first and second fixation pins 80, 82. Connection bracket mitigation bores or slots 110 and 110′ are provided on the two portions 76a, 76b of the bracket 76 as well, as illustrated. The second pivot pin 60 passes through the connection bracket mitigation slot 110, 110′ to allow movement of the brake lever arm 34 to a mitigation position, as discussed further herein. Generally, the mitigation slot 110, 110′ includes a first portion or section 112 and 112′ and a second portion or section 114 and 114′, on respective sides of the connection bracket 76, as illustrated. The first portion 112, 112′ can be standard or operating or normal operating position of the second pivot pin 60 and extend along a first axis 113, as illustrated in
Briefly, clutch lever arm 36 can be connected to the clutch coupler 42 via first and second pivot pins 120 and 122 and first and second fixation pins 124 and 126. A connection bracket 130 can also be provided over the clutch lever arm 36 and the clutch coupler 42 through which the pivot pins 120 and 122 and fixation pins 124 and 126 will pass. Clips can also be used to hold the respective pins in place, similar to the clips 68, 100, and 102 for the brake assembly. The clutch assembly including the clutch lever arm 36, the clutch coupler 42, and the clutch connection bracket 130 can operate in a manner similar to the brake assembly described herein. Accordingly, further detail regarding the clutch assembly is not provided here as it is understood that the assembly will operate substantially similarly to the brake assembly discussed further herein, particularly in connection with a collision and injury mitigation.
Returning reference to
In normal operation and when the connection bracket 76 is in a selected operating position, as illustrated in
The fixation of the two pivot pins 50 and 60 and the fixation pins 80 and 82 to the brake coupler 40 via the connection bracket 76 ensure a normal operation geometry of the brake lever arm 34 and the brake coupler 40 is maintained during normal operation of the brake assembly. Maintaining the normal geometry of the brake lever arm 34 relative to the brake coupler 40 is allowed because the second pivot pin 60 that engages the bore 62 in the lever arm 34 and the mitigation bore 64 in the brake coupler 40. The pin 60 is not able to move along the length of the mitigation bore 64 in the brake coupler 40 due to the connection bracket 76. The connection bracket 76 is fixed relative to the brake coupler 40, this holds the second pivot pin 60 within the first portion 112 of the mitigation bore 110 such that the lever arm 34 is maintained in a single orientation relative to the brake coupler 40. The fixation pins 80 and 82 fix the connection bracket 76 relative to the brake coupler 40.
As illustrated in
In addition to the pedal assembly 30 moving towards the passenger compartment 16, various portions that are connected to the pedal assembly 30 can also move towards the passenger compartment, such as the brake push rod 47 and the brake lever arm 34. The movement of the pedal assembly 30 and portions connected therewith towards the passenger compartment 16 may apply forces to the user, such as the user's foot 150, that are desired to be lessened or mitigated.
As illustrated in
Upon the application of the selected force, the connection bracket 76 can move substantially linearly along an axis D generally defined through the first bore 84 and the second bore 86. The axis D can also pass through the first portion 112 of the mitigation slot 110 of the connection bracket 76. Generally, the axis D may be aligned with the axes 85, 87 and 113 of the respective bores or bore portions. Thus, the connection bracket 76 may move from a normal position 76n (shown in phantom) to a collision position 76d (shown in solid). The movement of the connection bracket 76 is due to impingement with the car cross beam 140 and/or the bracket 141.
As the connection bracket 76 moves along the axis D, the second pivot pin 60 can move into the second portion 114 of the mitigation bore 110 of the connection bracket 76. As the middle or second pivot pin 60 moves into the second portion 114 of the mitigation bore 110, the second pivot pin 60 can move along the length of the mitigation bore 64 in the brake coupler 40 to allow the brake lever arm 34 to move towards the dashwall 24 (where the dashwall 24 can at least partially separate the engine compartment 14 from the passenger compartment 16) generally in the direction of arrow A′, as illustrated in
Returning reference to
Although the movement of the brake pedal lever arm 34 towards the dashwall 24 can be allowed due to movement of the second pivot pin 60 within the slot 64 defined by the brake coupler 40, as discussed above, the first and second pivot pins 50 and 60 maintain a coupling between the brake lever arm 34 and the brake coupler 40, as illustrated in
As discussed above, the clutch lever arm 36 is connected with the clutch coupler 42 in a manner similar to the connection of the brake lever arm 34 and the brake coupler 40. Accordingly, the clutch lever arm 36 and the clutch coupler 42 can be operated in a normal operating position. During a collision, the clutch connection bracket 130 can also contact the cross car beam 140 similar to the brake connection bracket 76. Accordingly, the brake connection bracket 76 and the clutch connection bracket 130 can operate similarly to allow movement of the respective lever arms 34, 36 towards the dashwall 24 during a frontal or offset collision. However, similar to the operation of the brake lever arm 34 after the frontal collision, the clutch lever arm 36 is also connected to the clutch coupler 42 in a manner similar to the brake lever arm 34 to allow for operation of the clutch, although possibly in a limited manner, after a frontal collision.
The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same may also be varied in many ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.
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