JP4194900B2 - Backward prevention mechanism for vehicle pedal device - Google Patents

Description

  The present invention relates to a reverse movement prevention mechanism for a vehicle pedal device that prevents a stepped portion of an operation pedal from moving backward toward a driver seat when a dash panel is displaced toward the driver seat.

  (a) a pedal bracket attached to the dash panel; and (b) an upper end portion that is pivotally disposed around a pivot axis that is substantially horizontal to the pedal bracket and substantially parallel to the vehicle width direction. (C) is connected to an intermediate position of the operation pedal, and the stepping part is operated to depress the output according to the operating force. 2. Description of the Related Art A vehicle pedal device having an output member that is moved to the vehicle front side, such as a brake pedal device, an accelerator pedal device, a parking brake pedal device, and the like, is widely known. In such a pedal device for a vehicle, when the dash panel is displaced toward the driver's seat due to a large load input from the front of the vehicle, a reverse prevention mechanism that prevents the stepped portion of the operation pedal from moving backward toward the driver's seat. Has been proposed. The device described in Patent Document 1 is an example thereof, and a part of the pedal bracket is buckled and deformed, and a pressing member provided on the dash panel is brought into contact with the operation pedal, whereby the support shaft of the operation pedal is It is pushed to the rear of the vehicle and comes off the pedal bracket.

Further, in Non-Patent Document 1, an engagement recess that opens toward the vehicle rear side is provided at an intermediate position of the operation pedal, and the support shaft is rotatably supported by the support shaft of the pedal bracket via the engagement recess. In addition, when the support shaft is displaced to the vehicle rear side together with the dash panel, the support shaft comes out of the engagement recess and the operation pedal drops off.
JP 2002-370632 A Japan Society of Invention and Innovation Technical Report No. 2001-3886

  However, in any of the above-described reverse prevention mechanisms, the direction of the reaction force acting on the pedal support portion when the operation pedal is depressed and the direction in which the operation pedal is removed are the same, and therefore, the positioning that prevents the operation pedal from falling off during the normal depression operation. Design of strength is difficult. Further, in Patent Document 1, since it is assumed that the pedal bracket is buckled, there is a possibility that the operation pedal may not drop off depending on the buckling deformation form, and a notch is provided in the pedal bracket for dropping off, resulting in a decrease in strength. To compensate for this, the plate thickness is increased or the bracket is enlarged. In Non-Patent Document 1, since the support shaft is pulled out of the engagement recess only by the displacement of the pedal bracket, the design of the positioning strength and the like becomes more difficult in combination with the fact that it does not fall off by the normal stepping operation.

  The present invention has been made in the background of the above circumstances, and the object of the present invention is to easily design the positioning strength so that the operation pedal does not fall off during a normal stepping operation, and with the displacement of the dash panel. It is therefore an object of the present invention to provide a simple and inexpensive reverse prevention mechanism in which the operation pedal is surely dropped from the pedal bracket.

In order to achieve such an object, the first invention includes (a) a pedal bracket attached to a dash panel, and (b) a rotation axis that is substantially horizontal to the pedal bracket and substantially parallel to the vehicle width direction. (C) an operation pedal that is pivotably disposed and a stepped portion provided at a lower end portion is operated to be depressed toward the front side of the vehicle; and (c) connected to the operation pedal, and the stepped portion is (D) when the dash panel is displaced toward the driver's seat, the stepped portion of the operation pedal moves backward toward the driver's seat. (D) supporting the operation pedal so as to be rotatable around the rotation axis, and opposite to a reaction force acting on the support portion as the stepping operation is performed. Predetermined size in the pulling direction A coupling device that allows the operating pedal to drop relative to the pedal bracket in the pulling direction according to the external force when the external force is applied to the operating pedal; and And a kick member that is relatively engaged with the operation pedal and applies the external force when the pedal bracket is displaced to the driver's seat side together with the dash panel , and (f The connecting device has a cylindrical outer peripheral surface and a C-shaped engaging recess that is engaged with the cylindrical outer peripheral surface over an angle range larger than 180 °, and the pedal bracket and the operation pedal. The operation pedal is supported by the engagement between the cylindrical outer peripheral surface and the engagement recess so as to be rotatable about the rotation axis, and the external force is applied to the operation pedal. In addition to When, characterized in that its cylindrical outer peripheral surface from the opening of the engagement recess by deformation are those which fall out the pedal bracket and the operating pedal escape the Sotaiteki.

The second invention includes (a) a pedal bracket attached to the dash panel, and (b) an upper end portion disposed on the pedal bracket so as to be rotatable about a rotation axis that is substantially horizontal and substantially parallel to the vehicle width direction. (C) an operation pedal connected to an intermediate position of the operation pedal, and the operation force is reduced by the stepping operation of the stepping part. An output member that is moved to the front side of the vehicle with an output corresponding to (d), (d) when the dash panel is displaced toward the driver's seat, the stepped portion of the operation pedal is on the driver's seat side. (E) a cylindrical outer peripheral surface, and a C-shaped engaging recess that is engaged with the cylindrical outer peripheral surface over an angular range greater than 180 °. Have the pedal bracket and front The operation pedal is disposed across the operation pedal, and supports the upper end portion of the operation pedal so as to be rotatable around the rotation axis by the engagement between the outer peripheral surface of the cylinder and the engagement recess. When an external force of a predetermined magnitude is applied to the operation pedal to the front side of the vehicle opposite to the reaction force acting on the upper end portion in accordance with the stepping operation, the cylindrical outer peripheral surface from the opening of the engagement recess is deformed by deformation And a coupling device that allows the operation pedal to fall relatively to the front side of the vehicle relative to the pedal bracket, and (f) is integrally disposed on the vehicle body side member, When the pedal bracket is displaced to the driver's seat side together with the dash panel, the kick bracket is engaged with an upper end portion of the operation pedal and relatively applies the external force.

According to a third aspect of the present invention, there is provided the vehicular pedal apparatus according to the first or second aspect of the present invention, wherein (a) the outer circumferential surface of the cylinder is an outer circumferential surface of a support member provided on the pedal bracket; The engagement recess is provided in the operation pedal so as to open in the same direction as the direction in which the reaction force acts.

  In such a reverse movement prevention mechanism for a pedal device for a vehicle, when an external force of a predetermined magnitude is applied in the pulling direction opposite to the reaction force acting on the support portion when the operation pedal is depressed, Detaches from the pedal bracket in accordance with its external force, and engages with the kick member that is integrated with the vehicle body side member when the pedal bracket is displaced to the driver's seat side together with the dash panel. As a result, the operation pedal is dropped in the pulling direction relative to the pedal bracket. Therefore, even when a large reaction force is applied to the support part during a normal stepping operation such as a brake pedal device, there is no risk of the operation pedal falling off the pedal bracket due to the reaction force, and positioning strength for preventing the dropout, etc. Can be configured so that it can be easily dropped by applying a relatively small external force in the pulling direction opposite to the reaction direction of the reaction force by the kick member. The operating pedal can be securely detached from the pedal bracket.

Furthermore, C-shaped since the intensity is operating pedal in normal depression positioned so as not to fall off only a small, which is engaged over a circular cylindrical outer peripheral surface, to greater than 180 ° angle range on its cylindrical peripheral surface is possible to employ a coupling device having an engagement recess shape, structure inexpensively constructed a simple consolidation device.

According to a second aspect of the present invention, there is provided a vehicular pedal device that moves and outputs an output member connected to an intermediate position to the vehicle front side when an operation pedal rotatably supported by a pedal bracket is depressed at an upper end portion. relates, in support of the upper reaction force acts toward the vehicle rear side, a case where the vehicle front side of the opposite is pull direction, corresponds to the first shot Akira embodiment, the first The same effect as the first invention can be obtained.

In the third invention, since the cylindrical outer peripheral surface is provided on the support member provided on the pedal bracket and the engagement recess is provided on the operation pedal, the strength is higher than when the engagement recess is provided on the pedal bracket. The pedal bracket can be made small and lightweight.

  The present invention is for various vehicles such as a brake pedal device for an ordinary brake, an accelerator pedal device, a clutch pedal device, a parking brake pedal device, and the like, in which a stepped portion provided at the lower end of an operation pedal is depressed to the front side of the vehicle. It can be applied to a pedal device.

  The operating pedal is dropped from the pedal bracket by applying an external force in a pulling direction opposite to the reaction direction of the reaction force, and it is desirable that the direction of the reaction force and the pulling direction are opposite to each other by 180 °. However, it is sufficient that the direction is at least the opposite direction, and the direction rotated in an angle range larger than 90 ° and smaller than 270 ° with respect to the direction of the reaction force may be set as the pulling direction.

  The vehicle body side member on which the kick member is arranged is less likely to be displaced toward the driver's seat side, that is, the vehicle rear side when a heavy load is input from the front of the vehicle. The instrument panel reinforcement (instrument panel) The other cowl panel is preferably used, and the kick member is engaged with the operation pedal based on the relative displacement between the vehicle body side member and the dash panel. The dash panel is a partition that separates the vehicle compartment from the engine compartment.

In the vehicle pedal device according to the second aspect of the invention, when the operation pedal rotatably supported by the pedal bracket is depressed at the upper end portion, the output member connected to the intermediate position is moved to the vehicle front side and output. Although so as to, in the first shot bright, for example, the upper end portion or the brake on the front end portion such as a cable while being pivotably supported at an intermediate position (output member) are connected, by pulling the brake cable The present invention can also be applied to a case where a downward reaction force acts on the support portion, such as a parking brake pedal device that generates a braking force. In this case, the operation member is pulled upward by providing an inclined surface on the kick member. Various modes are possible, such as doing so.

In the third invention, the support member provided in the pedal bracket is provided with the cylindrical outer peripheral surface, and the operation pedal is provided with the engagement recess, but the rotating member provided in the operation pedal is provided with the cylindrical outer peripheral surface. At the same time, the pedal bracket may be provided with an engagement recess that opens in the opposite direction of the reaction force, that is, in the pulling direction, and the cylindrical outer peripheral surface of the rotating member may be fitted into the engagement recess. .

  The engagement recess and the cylindrical outer peripheral surface can be fitted relative to each other around the rotation axis, for example, but the support member provided with the cylindrical outer peripheral surface can rotate about the rotation axis. If so, the engagement recess and the outer peripheral surface of the cylinder may be fitted so as not to rotate relative to each other, and the operation pedal may always be rotated around the rotation axis integrally with the support member. When the rotating member provided on the operation pedal is fitted in the engagement recess of the pedal bracket, if the rotating member can rotate relative to the operation pedal, the outer periphery of the cylinder of the rotating member The surface and the engagement recess can be made relatively unrotatable.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a view showing a brake pedal device 8 for a service brake. A pedal bracket 12 is integrally fixed to a dash panel 10 that divides an engine room and a vehicle interior, and a connecting device 14 is attached to the pedal bracket 12. An operation pedal 16 is disposed through the control pedal. The coupling device 14 includes a bolt 18 that is integrally fixed to the pedal bracket 12, a collar 19 that is disposed on the outer peripheral side of the bolt 18, and an outer peripheral side of the collar 19 that is relatively rotatable about an axis. It has a sleeve 20 as a fitted support member and a C-shaped engagement recess 22 provided at the upper end of the operation pedal 16, and the engagement recess 22 is formed on the cylindrical outer peripheral surface 24 of the sleeve 20. By being fitted over an angle range slightly larger than 180 ° (for example, about 200 °), the operation pedal 16 is the center line of the sleeve 20, that is, the center line of the bolt 18, substantially horizontal and in the vehicle width direction. It is supported so as to be rotatable about a substantially parallel rotation axis. By compressing the sleeve 20 in the axial direction in a state in which the engagement recess 22 of the operation pedal 16 is fitted to the sleeve 20, the portions on both sides of the operation pedal 16 are arranged on the outer periphery as shown in FIG. The operation pedal 16 is positioned at the intermediate position of the sleeve 20 by bulging to the side (caulking), and the assembly structure of the operation pedal 16 is simple and inexpensive. FIG. 1 (a) is a side view of the vehicle as seen from the side, with the front side pedal bracket 12 removed, and FIG. 1 (b) is a view corresponding to the section BB in FIG. 1 (a).

  A step portion 26 is provided at the lower end portion of the operation pedal 16, and when the driver depresses the vehicle forward (leftward in FIG. 1 (a)), the operation pedal 16 rotates clockwise around the sleeve 20. Is rotated. Further, an operating rod 30 that protrudes from the brake booster 28 disposed on the engine room side of the dash panel 10 into the vehicle interior is parallel to the sleeve 20 at an intermediate position of the operation pedal 16, specifically, a position close to the sleeve 20. When the operation pedal 16 is depressed, the operating rod 30 is moved to the vehicle front side with an output corresponding to the depression operation force, and the service brake is activated. The operating rod 30 corresponds to an output member.

  The connecting device 14 constitutes a receding prevention mechanism 36 together with a kick member 34 that is integrally fixed to the instrument panel reinforcement 32 by welding or the like. The reverse prevention mechanism 36 is for preventing the stepped portion 26 of the operation pedal 16 from moving backward to the driver seat side even when the dash panel 10 is displaced to the driver seat side due to a large load input from the front of the vehicle. When the dash panel 10 is displaced toward the driver's seat as shown by an arrow A in FIG. 2 and is relatively moved closer to the instrument panel reinforcement 32, the upper end portion of the operation pedal 16 as shown in FIG. Then, the kick member 34 comes into contact with the engagement recess 22 of the coupling device 14 to be detached from the sleeve 20 and the operation pedal 16 is dropped downward. That is, the engagement recess 22 is provided so as to open toward the rear side of the vehicle and is engaged with the sleeve 20. When the operation pedal 16 abuts against the kick member 34, On the other hand, when an external force of a predetermined magnitude is applied in the pulling direction toward the front side of the vehicle, the opening edge of the engagement recess 22 or the sleeve 20 is deformed, and the engagement recess 22 becomes the sleeve 20. Get out of it. As shown in FIG. 2 (b), when the dash panel 10 further enters the driver's seat, the sleeve 20 rides on the side surface of the kick member 34, so that the load and impact applied to the instrument panel reinforcement 32 are reduced. It is reduced. The instrument panel reinforcement 32 corresponds to a vehicle body side member, and is generally less likely to be displaced toward the driver's seat side, that is, the vehicle rear side when a heavy load is input from the front of the vehicle.

  Here, during a normal depression operation of the operation pedal 16, a reaction force in a direction toward the vehicle rear side acts on the upper end support portion of the operation pedal 16 due to the pushing resistance of the operating rod 30. Since the reaction force is opened toward the rear side of the vehicle and engaged with the sleeve 20, the engagement recess 22 is not likely to come out of the sleeve 20 due to the reaction force. For this reason, the strength for positioning the operation pedal 16 so that it does not fall off the sleeve 20 in a normal stepping operation is small, and even if the engagement margin between the engagement recess 22 and the sleeve 20 is small, the operation pedal 16 can be used as a sleeve. It is supported favorably so as to be able to rotate without falling off from 20. When the upper end portion of the operation pedal 16 abuts against the kick member 34 and an external force is applied in the pulling direction on the front side of the vehicle, the engagement recess 22 is easily pulled out from the sleeve 20, and the operation pedal 16 is removed from the pedal bracket 12. It is definitely dropped out.

  As described above, in the brake pedal device 8 of the present embodiment, an external force having a predetermined magnitude is applied to the pulling direction opposite to the reaction force acting on the upper end support portion when the operation pedal 16 is depressed, that is, the vehicle front side. In this case, the operation pedal 16 is detached from the sleeve 20 of the pedal bracket 12 to the vehicle front side according to the external force. When the pedal bracket 12 is displaced together with the dash panel 10 to the driver's seat side, the instrument panel reinforcement By being engaged with a kick member 34 that is integrally provided with the ment 32, the operation pedal 16 is dropped toward the vehicle front side (withdrawal direction) relative to the pedal bracket 12. Therefore, even if a large reaction force is applied to the upper end support portion by a normal stepping operation, the operation pedal 16 is not likely to drop from the pedal bracket 12 due to the reaction force, and the positioning strength for preventing the dropout, etc. The dash panel 12 can be easily detached by simply applying a relatively small external force in the pulling direction opposite to the reaction direction of the reaction force by the kick member 34. Accordingly, the operation pedal 16 can be reliably detached from the pedal bracket 12.

  Further, since the strength for positioning so that the operation pedal 16 does not fall off in a normal stepping operation is small, in the present embodiment, the cylindrical outer peripheral surface 24 and the cylindrical outer peripheral surface 24 over an angular range larger than 180 °. A connecting device 14 having a C-shaped engaging recess 22 to be engaged is employed, and the structure of the connecting device 14 is simple and inexpensive.

  Further, since the cylindrical outer peripheral surface 24 is provided on the sleeve 20 provided in the pedal bracket 12 and the engagement recess 22 is provided on the operation pedal 16, it is compared with the case where the engagement recess is provided on the pedal bracket 12. Thus, the pedal bracket 12 can be made small and lightweight.

  3, a cylindrical rotating member 42 provided integrally with the operation pedal 16 is provided with a cylindrical outer peripheral surface 44 as in the connection device 40 shown in FIG. An engaging recess 46 that opens toward the front side of the vehicle, that is, toward the front side of the vehicle, is provided, and a rotating member 42 is fitted into the engaging recess 46 so as to be pivotably supported. When the moving member 42 or the operation pedal 16 abuts and an external force is applied relatively toward the front side of the vehicle, the opening edge of the engaging recess 46 or the rotating member 42 is deformed and the rotating member 42 is deformed. May come out of the engagement recess 46 relatively to the vehicle front side, and the operation pedal 16 may be dropped downward by a notch 48 or the like provided continuously in the engagement recess 46.

  In the above embodiment, the sleeve 20 is disposed on the pedal bracket 12 as a support member. However, as shown in FIG. 4, the pedal bracket 12 is supported by a bottomed cylindrical shape via a fixing means 50 such as a rivet. The member 52 is integrally disposed, and the engagement recess 22 is fitted to the cylindrical outer peripheral surface 54 of the support member 52 over an angle range slightly larger than 180 ° (for example, about 200 °). The pedal 16 may be supported so as to be rotatable about a rotation axis about the center line of the support member 52, that is, substantially horizontal and substantially parallel to the vehicle width direction. Also in this case, the operation pedal 16 is bulged (crimped) to the outer peripheral side with the opening 22 of the support member 52 in a state where the engagement recess 22 of the operation pedal 16 is fitted to the support member 52. It has been retained.

  As mentioned above, although the Example of this invention was described in detail based on drawing, these are one Embodiment to the last, This invention is implemented in the aspect which added the various change and improvement based on the knowledge of those skilled in the art. be able to.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows schematic structure of the brake pedal apparatus with which this invention was applied, (a) is the side view which removed a part, (b) is BB sectional drawing in (a). It is a figure which shows the state in which an operation pedal falls out at the time of a deformation | transformation of a dash panel in the Example of FIG. It is a figure which shows the other Example of this invention, and is a side view corresponding to Fig.1 (a). It is a figure which shows another Example of this invention, and is sectional drawing corresponding to FIG.1 (b).

Explanation of symbols

  8: Brake pedal device (vehicle pedal device) 10: Dash panel 12: Pedal bracket 14, 40: Connecting device 16: Operation pedal 20: Sleeve (support member) 22, 46: Engaging recess 24, 44: Cylindrical outer periphery Surface 30: Operating rod (output member) 32: Instrument panel reinforcement (vehicle body side member) 34: Kick member 36: Retraction prevention mechanism 52: Support member 54: Cylindrical outer peripheral surface

Claims (3)

A pedal bracket attached to the dash panel;
An operation pedal that is disposed on the pedal bracket so as to be rotatable about a rotation axis that is substantially horizontal and substantially parallel to the vehicle width direction;
An output member connected to the operation pedal and moved by an output corresponding to the operation force when the step portion is depressed;
In the vehicular pedal device having the above-mentioned, a reverse preventing mechanism for preventing the stepped portion of the operation pedal from moving backward to the driver's seat when the dash panel is displaced toward the driver's seat,
The operation pedal is supported so as to be rotatable about the rotation axis, and an external force having a predetermined magnitude is applied to the operation pedal in a pulling direction opposite to a reaction force acting on the support portion when the stepping operation is performed. A coupling device that, when applied, allows the operating pedal to fall relative to the pedal bracket in the withdrawal direction according to the external force;
A kick member that is integrally disposed on a vehicle body side member and that is relatively engaged with the operation pedal and applies the external force when the pedal bracket is displaced together with the dash panel toward the driver's seat;
And the connecting device comprises:
It has a cylindrical outer peripheral surface and a C-shaped engaging recess that is engaged with the cylindrical outer peripheral surface over an angular range larger than 180 °, and straddles the pedal bracket and the operation pedal. The operation pedal is rotatably supported by the engagement between the outer peripheral surface of the cylinder and the engagement recess, and is deformed when the external force is applied to the operation pedal. A reverse prevention mechanism for a vehicular pedal device, characterized in that the outer peripheral surface of the cylinder relatively comes out of the opening of the engagement recess to drop the operation pedal from the pedal bracket . A pedal bracket attached to the dash panel;
An operation in which an upper end portion is disposed so as to be rotatable about a rotation axis that is substantially horizontal to the pedal bracket and substantially parallel to the vehicle width direction, and the step portion provided at the lower end portion is operated to be depressed toward the front side of the vehicle. Pedal,
An output member connected to an intermediate position of the operation pedal and moved to the vehicle front side with an output corresponding to the operation force when the step portion is depressed.
In the vehicular pedal device having the above-mentioned, a reverse preventing mechanism for preventing the stepped portion of the operation pedal from moving backward to the driver's seat when the dash panel is displaced toward the driver's seat,
It has a cylindrical outer peripheral surface and a C-shaped engaging recess that is engaged with the cylindrical outer peripheral surface over an angular range larger than 180 °, and straddles the pedal bracket and the operation pedal. The upper end portion of the operation pedal is rotatably supported around the rotation axis by engagement between the outer peripheral surface of the cylinder and the engagement recess, and the upper end portion according to the stepping operation is supported. When an external force of a predetermined magnitude is applied to the operation pedal to the front side of the vehicle opposite to the reaction force acting on the operation pedal, the cylinder outer peripheral surface relatively comes out of the opening of the engagement recess due to deformation, and the operation pedal A coupling device that allows the vehicle to fall to the front side of the vehicle relative to the pedal bracket;
When the pedal bracket is displaced to the driver's seat side together with the dash panel, it is engaged with an upper end portion of the operation pedal and relatively applies the external force. A kick member;
A reverse prevention mechanism for a vehicular pedal device, comprising: The cylindrical outer peripheral surface is an outer peripheral surface of a support member provided on the pedal bracket,
The engaging recess, backward of the vehicular pedal device according to claim 1 or 2, characterized in that the so provided as to open toward the same direction as the direction of action of the reaction force to the operation pedal Prevention mechanism.

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