JP2008282243A - Pedal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve durability by reducing a play or wear in a connection part in a pedal device. <P>SOLUTION: A pedal bracket 13 is turnably supported with a brake pedal 14 with a first shaft center O1 as a fulcrum; a turning member 16 is turnably supported with a second shaft center O2 parallel to the first shaft center O1 as a fulcrum; the brake pedal 14 and the turning member 16 are connected by a connection link 17, to configure the turning member 16 such that the turn member 16 can turn via the connection link 17, according to a turn stroke of the brake pedal 14; and the brake pedal 14 is axially pinched by screw members 37, 38 provided in the pedal bracket 13, in the connecting part (the shaft center O1) between the pedal bracket 13, and thereby the brake pedal 14 turnably connects them. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pedal device used in a vehicle brake device or the like.

  In a vehicle brake device, the amount of depression of a brake pedal by a driver is boosted by a booster, and subsequently, a hydraulic pressure corresponding to the depression amount is applied by a master cylinder, and a wheel cylinder is operated to perform a desired control. It generates power.

  The pedal device used in this brake device is generally configured such that the upper end portion of the brake pedal is rotatably supported on the vehicle body side, and this brake pedal is biased and supported by a spring in a direction opposite to the stepping direction by the driver. The operation rod connected to the brake booster is connected to the middle part of the brake pedal.

  By the way, the lever ratio characteristic of the brake pedal is determined by the connection position of the operation rod with respect to the brake pedal. In order to quickly obtain a large braking force with a small operation amount, it is necessary to set the lever ratio large, and various brake pedal devices having a link mechanism have been proposed.

  For example, in a brake pedal device described in Patent Document 1 below, an operation pedal is rotatably supported by a bracket, and a rotation member is rotatably supported. One end portion of the operation pedal and the rotation member One end of the lever is connected by a connecting link, and the other end of the rotating member is connected to the rod, and the control lever is held at the reference position during normal brake operation when the stepping force is less than the change set value. While the ratio is changed according to the reference pattern, when the stepping force exceeds the change set value, the control lever is rotated against the biasing force of the compression coil spring, and the position of the connecting pin is changed to set the lever ratio as the reference. It can be increased more than the pattern.

JP 2006-290203 A

  In the above-described conventional brake pedal device, the operation pedal and the rotation member are rotatable about the bracket by the support shaft, and the operation pedal, the connecting link, and the rotation member are connected to each other so as to be relatively rotatable. Therefore, backlash tends to occur in the axial direction and the radial direction of the support shaft at each connecting portion. Therefore, when the driver depresses the operation pedal to rotate the connecting link or the rotating member, there is a possibility that abnormal noise is generated due to backlash at each connecting part, or wear is generated and durability is lowered. . And there is a possibility that the braking force desired by the driver cannot be ensured due to the play and the wear, and there is a possibility that the control accuracy of the braking force is lowered.

  The present invention is intended to solve such problems, and an object of the present invention is to provide a pedal device that is improved in durability by reducing backlash and wear in a connecting portion.

  In order to solve the above-described problems and achieve the object, the pedal device of the present invention has an operation pedal that is rotatably supported by the pedal bracket with the first axis as a fulcrum, and the rotation of the operation pedal In the pedal device capable of transmitting a stroke to an operation target via an operation rod, the operation pedal is connected to the first bracket by a holding means provided on the pedal bracket at a connecting portion between the pedal bracket and the operation pedal. It is characterized in that it is pivotally connected by being sandwiched in the axial direction of the shaft center.

  In the pedal device of the present invention, an end portion of the operating rod is connected to a connecting member, the connecting member is connected to the operating pedal, and a connecting portion having a fifth axis between the connecting member and the operating pedal. The operation pedal is rotatably connected by being clamped in the axial direction of the fifth axis by a clamping means provided in the coupling member.

  In the pedal device according to the present invention, a rotating member is rotatably supported by the pedal bracket with a second axis parallel to the first axis as a fulcrum, and the end of the operation rod is supported by the rotating member. And the operation pedal and the rotation member are connected by a connection link, and the rotation member can be rotated via the connection link in accordance with a rotation stroke of the operation pedal. In the connecting portion with the rotating member, the rotating member is rotatably connected by being clamped in the axial direction of the second axis by a clamping means provided in the pedal bracket. It is a feature.

  In the pedal device according to the present invention, a rotating member is rotatably supported by the pedal bracket with a second axis parallel to the first axis as a fulcrum, and the end of the operation rod is supported by the rotating member. And the operation pedal and the rotation member are connected by a connection link, and the rotation member can be rotated via the connection link in accordance with a rotation stroke of the operation pedal. In the connecting portion having the third axis with the connecting link, the operation pedal is rotatably connected by being held in the axial direction of the third axis by the holding means provided in the connecting link. It is characterized by being.

  In the pedal device according to the present invention, a rotating member is rotatably supported by the pedal bracket with a second axis parallel to the first axis as a fulcrum, and the end of the operation rod is supported by the rotating member. Are connected, the operating pedal and the rotating member are connected by a connecting link, and the rotating member can be rotated via the connecting link according to the rotating stroke of the operating pedal, and the rotating member In the connecting portion having the fourth axis between the connecting link and the connecting link, the rotating member is rotatable by being held in the axial direction of the fourth axis by the holding means provided in the connecting link. It is connected to.

  In addition, the pedal device of the present invention is supported rotatably with an operation pedal supported rotatably about the first axis and a second axis parallel to the first axis. A rotating member to which an end of an operating rod is connected, and a connecting link for connecting the operating pedal and the rotating member to rotate the rotating member in accordance with a rotating stroke of the operating pedal. In the pedal device, the operation pedal is clamped in the axial direction of the third axis by the clamping means provided on the connection link at the connection portion having the third axis between the operation pedal and the connection link. In this way, it is pivotally connected.

  In addition, the pedal device of the present invention is supported rotatably with an operation pedal supported rotatably about the first axis and a second axis parallel to the first axis. A rotating member to which an end of an operating rod is connected, and a connecting link for connecting the operating pedal and the rotating member to rotate the rotating member in accordance with a rotating stroke of the operating pedal. In the pedal apparatus, in the connecting portion having the fourth axis between the rotating member and the connecting link, the rotating member is axially moved by the clamping means provided in the connecting link. It is characterized in that it is rotatably connected by being sandwiched between the two.

  In the pedal device according to the present invention, the connection link is characterized in that a cross section is formed in an H shape.

  The pedal device according to the present invention is characterized in that elastic means that is elastically deformable in the axial direction is provided between the clamping means and the operation pedal or between the clamping means and the rotating member.

  In the pedal device according to the present invention, the clamping means has a spherical portion that can be pressed.

  In the pedal device according to the present invention, the clamping means includes an adjusting means capable of adjusting a clamping pressure.

  In the pedal device of the present invention, the clamping means clamps the operation pedal or the rotating member in the axial direction and the radial direction of the shaft center.

  According to the pedal device of the present invention, the operation pedal is rotatably supported on the pedal bracket with the first axis as a fulcrum, and the operation pedal is connected to the pedal bracket at the connecting portion between the pedal bracket and the operation pedal. Since it is rotatably connected by being clamped in the axial direction by the provided clamping means, the play at this connecting portion can be reduced, the occurrence of wear can be suppressed, and the durability can be improved.

  Further, according to the pedal device of the present invention, the operation pedal and the rotation member are connected by the connecting link so that the rotation member can be rotated according to the rotation stroke of the operation pedal. Since the operation pedal or the rotation member is held in the axial direction by the holding means provided on the connection link at the connection portion with the connection link or the connection portion between the rotation member and the connection link, the rotation is connected. The backlash at the connecting portion can be reduced, the occurrence of wear can be suppressed, and the durability can be improved.

  Embodiments of a pedal device according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this Example.

  FIG. 1 is a front view illustrating a pedal device according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line II-II in FIG.

  In the pedal device of the first embodiment, as shown in FIGS. 1 and 2, a pedal bracket 13 having a box shape is fixed to the vehicle body side bracket 11 via a fixing member 12. The pedal bracket 13 has an end surface portion 13 a fixed to the vehicle body side bracket 11. The brake pedal 14 as an operation pedal has a top end supported by a left and right side surface portion 13b of the pedal bracket 13 so as to be pivotable around the first axis O1, and a pedal 15 on which a passenger can step on the bottom end. Is installed.

  The rotating member 16 is rotatably supported with a lower end portion below the first axis O1 and a second axis O2 that is substantially parallel to the first axis O1 as a fulcrum. The intermediate portions of the brake pedal 14 and the rotating member 16 are connected by a connecting link 17 with a third axis O3 and a fourth axis O4. Therefore, the rotation member 16 can be rotated via the connection link 17 in accordance with the rotation stroke of the brake pedal 14.

  Further, a brake booster 18 as an operation target means is fixed to the vehicle body side bracket 11, an end portion of an operation rod 19 as an operation rod extends to the brake pedal 14 side, and an end portion serves as a connecting member. A clevis 20 is connected, and the clevis 20 is connected to the upper end of the rotating member 16 by a connecting shaft 21. Further, a tension coil spring 23 is stretched between the connecting shaft 21 and the vehicle body side locking portion 22, and the urging force of the tension coil spring 23 causes the rotating member 16 to rotate clockwise in FIG. The brake pedal 14 is urged and supported in the counterclockwise direction in FIG.

  In the operation pedal device of this embodiment, the brake pedal 14 is thirdly connected by the third clamping means provided in the connection link 17 at the connection portion (third axis O3) between the brake pedal 14 and the connection link 17. It is rotatably connected by being sandwiched in the axial direction of the axis O3. In addition, at the connecting portion (fourth axis O4) between the rotating member 16 and the connecting link 17, the rotating member 16 is axially arranged in the fourth axis O4 by the fourth clamping means provided on the connecting link 17. It is connected so that it can rotate freely. Further, the brake pedal 14 and the rotating member 16 are provided on the pedal bracket 13 at each connecting portion (the first axis O1 and the second axis O2) of the brake pedal 14 and the rotating member 16 and the pedal bracket 13. The first and second clamping means are supported in a rotatable manner by being clamped in the axial direction of the first and second axial centers O1 and O2. An elastic means that is elastically deformable in the axial direction is provided between the first and second clamping means and the brake pedal 14 and the rotating member 16.

  That is, at the connection portion (O1) between the brake pedal 14 and the pedal bracket 13, the first support member 31 includes a cylindrical portion 31a and a lid portion 31b fixed to each end portion in the axial direction of the cylindrical portion 31a. A spherical concave portion 32 having a spherical shape is formed on the surface of each lid portion 31b. And as for the brake pedal 14, the connection hole 14a is formed in the upper end part, the outer peripheral surface of the 1st support member 31 fits into this connection hole 14a, and both are being fixed integrally.

  In addition, at the connection portion (O2) between the rotating member 16 and the pedal bracket 13, the second support member 33 is a cylindrical portion 33a and a lid portion 33b fixed to each end portion in the axial direction of the cylindrical portion 33a. A spherical concave portion 34 having a spherical shape is formed on the surface of each lid portion 33b. The rotating member 16 has a connection hole 16a formed at the lower end thereof, and the outer peripheral surface of the second support member 33 is fitted into the connection hole 16a, and both are fixed integrally.

  On the other hand, the pedal bracket 13 has a screw hole 35 formed in each side surface portion 13 b so as to face the first support member 31 and a screw hole 36 opposed to the second support member 33. The two screw members 37, 38 have flange portions 37 a, 38 a and tip spherical surface portions 37 b, 38 b, and are screwed into the screw holes 35 in the side surface portions 13 b of the pedal bracket 13 from the outside, respectively. 37 b and 38 b are in pressure contact with each spherical recess 32 of the first support member 31. The one screw member 37 is prevented from being loosened by being screwed in until the flange portion 37a is in close contact with the side surface portion 13b of the pedal bracket 13, and the other screw member 38 is screwed into the lock nut 39 so that the pedal bracket is engaged. The close contact with the side surface portion 13b of the thirteen prevents the relaxation.

  The two screw members 40, 41 have flange portions 40a, 41a and tip spherical surface portions 40b, 41b, and are screwed into the screw holes 36 in the side surface portions 13b of the pedal bracket 13 from the outside, respectively. The spherical portions 40 b and 41 b are in pressure contact with the spherical concave portions 34 of the second support member 33. One screw member 40 is prevented from being loosened by being screwed in until the flange portion 40a is in close contact with the side surface portion 13b of the pedal bracket 13, and the other screw member 41 is engaged with the pedal bracket by the lock nut 42 being screwed together. The close contact with the side surface portion 13b of the thirteen prevents the relaxation.

  The curvature radii of the tip spherical surface portions 37b, 38b, 40b, 41b of the screw members 37, 38, 40, 41 are set to be larger than the curvature radii of the spherical concave portions 32, 34 of the support members 31, 33. ing.

  In this case, the first clamping means is constituted by the screw members 37, 38, the spherical concave portion 32, and the like, and the second clamping means is constituted by the screw members 40, 41, the spherical concave portion 34, etc. Further, the first support member 31 and the second support member 33 constitute elastic means.

  Further, a third support member 51 is integrally embedded in the brake pedal 14 at a connection portion (O3) between the brake pedal 14 and the connection link 17, and spherical surfaces are provided on both sides of the third support member 51. A spherical recess 52 having a shape is formed. In addition, a fourth support member 53 is integrally embedded in the rotation member 16 at the connection portion (O4) between the rotation member 16 and the connection link 17, and on both sides of the fourth support member 53. A spherical concave portion 54 having a spherical shape is formed.

  On the other hand, the cross section of the connecting link 17 is formed in an H shape by a pair of opposing link members 17a being integrally connected by a connecting portion 17b. In the link 17, a screw hole 55 is formed in each link member 17 a so as to face the third support member 51, and a screw hole 56 is formed so as to face the fourth support member 53. The two screw members 57 and 58 have flange portions 57a and 58a and tip spherical surface portions 57b and 58b. The screw members 57 and 58 are screwed into the screw holes 55 in the link members 17a of the connecting link 17 from the outside, respectively. 57 b and 58 b are in pressure contact with each spherical recess 52 of the third support member 51. Then, one screw member 57 is screwed in until the flange portion 57a is in close contact with the connecting link 17, and is prevented from loosening, and the other screw member 58 is in close contact with the connecting link 17 by the lock nut 59 being screwed together. This prevents relaxation.

  The two screw members 60, 61 have flange portions 60a, 61a and tip spherical surface portions 60b, 61b. The screw members 60, 61 are screwed into the screw holes 56 in the link members 17a of the connecting link 17 from the outside, respectively. The spherical portions 60 b and 61 b are in pressure contact with the spherical concave portions 54 of the fourth support member 53. Then, one screw member 60 is screwed in until the flange portion 60a is in close contact with the connection link 17, and is prevented from loosening, and the other screw member 61 is in close contact with the connection link 17 with the lock nut 62 screwed together. This prevents relaxation.

  The curvature radii of the tip spherical surface portions 57b, 58b, 60b, 61b of the screw members 57, 58, 60, 61 are set to be larger than the curvature radii of the spherical concave portions 52, 54 of the support members 51, 53. ing.

  In this case, the third clamping means is constituted by the screw members 57, 58 and the spherical concave portion 52, and the fourth clamping means is constituted by the screw members 60, 61 and the spherical concave portion 54.

  Further, the first clamping means and the second clamping means have adjusting means capable of adjusting the clamping pressure. That is, each adjusting means in the first clamping means and the second clamping means is constituted by screw members 38, 41 and lock nuts 39, 42, and by tightening the screw members 38, 41, each support member 31, The pressure contact force with 33 is increased, and the support members 31 and 33 are elastically deformed, so that the support force of the brake pedal 14 and the rotating member 16 can be increased and supported without play.

  Therefore, when the driver depresses the brake pedal 14, the brake pedal 14 rotates about the first axis O <b> 1 as a fulcrum, and the operation amount (operation force) is transmitted to the rotating member 16 via the connection link 17. The Then, the rotation member 16 is rotated against the urging force of the tension coil spring 23 with the second axis O2 as a fulcrum, so that the operation amount is transmitted to the operation rod 19 via the clevis 20. Thus, the operation rod 19 moves in the axial direction, and the brake booster 18 can be operated.

  At this time, when the driver depresses the brake pedal 14, the brake pedal 14, the connecting link 17, and the rotating member 16 are rotated with respect to the pedal bracket 13, but the connecting portion of the pedal bracket 13 and the brake pedal 14 ( The shaft center O1) and the connecting portion (axis center O2) of the pedal bracket 13 and the rotating member 16 are provided with screw members 37, 38, 40, and supporting members 31, 33 integral with the brake pedal 14 and the rotating member 16, respectively. By being pinched by 41, the brake pedal 14 and the rotation member 16 are rotatably supported, and can be smoothly rotated without play. Further, the connecting portion (axial center O3) of the brake pedal 14 and the connecting link 17 and the connecting portion (axial center O4) of the rotating member 16 and the connecting link 17 are each supported integrally with the brake pedal 14 and the rotating member 16. Since the members 51 and 53 are clamped by the screw members 57, 58, 60, and 61, the brake pedal 14, the rotating member 16, and the connecting link 17 are connected so as to be relatively rotatable, and can be smoothly rotated without looseness. Will be.

  As described above, in the pedal device according to the first embodiment, the brake pedal 14 is rotatably supported by the pedal bracket 13 with the first axis O1 as a fulcrum, and the second axis parallel to the first axis O1. The rotation member 16 is rotatably supported using O2 as a fulcrum, and the brake pedal 14 and the rotation member 16 are connected by the connection link 17, so that the connection via the connection link 17 depends on the rotation stroke of the brake pedal 14. The rotating member 16 is configured to be rotatable, the brake pedal 14 is rotatably supported by the pedal bracket 13, and the brake pedal 14 is connected to the connecting portion (axial center O1) between the pedal bracket 13 and the brake pedal 14. Is supported by the screw members 37 and 38 provided on the pedal bracket 13 in the axial direction so as to be rotatable.

  Accordingly, when the brake pedal 14 rotates, the brake pedal 14 is supported while being sandwiched between the screw brackets 37 and 38 on the pedal bracket 13, so that the brake pedal 14 rotates smoothly without rattling. As a result, the backlash at each connecting portion is reduced, the occurrence of wear can be suppressed, and the durability can be improved.

  In the first embodiment, the rotating member 16 is rotatably supported by the pedal bracket 13, and the rotating member 16 is connected to the pedal bracket at the connecting portion (axial center O <b> 2) between the pedal bracket 13 and the rotating member 16. 13 is supported rotatably by being clamped in the axial direction by screw members 40, 41 provided in 13. Therefore, when the rotating member 16 rotates with the brake pedal 14, the rotating member 16 is supported by the pedal bracket 13 while being sandwiched between the screw members 40 and 41. Will rotate smoothly without backlash, and as a result, backlash at each connecting portion can be reduced and the occurrence of wear can be suppressed.

  In the pedal device according to the first embodiment, the brake pedal 14 is held in the axial direction by the screw members 57 and 58 provided on the connection link 17 at the connection portion (axial center O3) between the brake pedal 14 and the connection link 17. By doing so, it is pivotally connected. Therefore, when the driver depresses the brake pedal 14, the brake pedal 14, the connecting link 17, and the rotating member 16 rotate relative to each other, but the connecting portion between the brake pedal 14 and the connecting link 17 is a screw member 57. , 58, the brake pedal 14 and the connecting link 17 smoothly rotate without rattling. As a result, the play at the connecting portion is reduced and the occurrence of wear is suppressed. And durability can be improved.

  In the first embodiment, the rotating member 16 is held in the axial direction by the screw members 60 and 61 provided on the connecting link 17 at the connecting portion (axial center O4) between the rotating member 16 and the connecting link 17. It is connected so that it can rotate freely. Therefore, when the driver depresses the brake pedal 14, the brake pedal 14, the connecting link 17, and the rotating member 16 rotate relative to each other, but the connecting portion between the rotating member 16 and the connecting link 17 is a screw member. Since the rotating member 16 and the connecting link 17 are smoothly supported without rattling, the rattling at each connecting portion is reduced and wear is reduced. Generation | occurrence | production can be suppressed and durability can be improved.

  In this case, the brake pedal 14, the rotation member 16, the connecting link 17, and the support members 31, 33, 51, and 53 are accommodated in the pedal bracket 13 having a box shape, and the apparatus can be made compact. can do. Further, the connecting link 17 is formed in an H-shaped cross section, and the connecting link 17 can be easily connected in a state where the brake pedal 14 and the rotating member 16 are sandwiched, and the structure can be simplified. it can.

  In the first embodiment, the elastically deformable support members 31 and 33 having a hollow shape are fixed to the brake pedal 14 and the rotating member 16, and the screw members 37, 38, 40, and 41 are attached to the support members 31 and 33. It is clamped in the axial direction. Accordingly, it is possible to easily apply a clamping force in the axial direction to the connecting portion between the brake pedal 14 and the rotating member 16, and to ensure a smooth rotating operation without rattling over a long period of time. Can do.

  In the first embodiment, the screw members 37, 38, 40, 41, 57, 58, 60, 61 as clamping means are provided on the spherical recesses 32, 34, 52, of the support members 31, 33, 51, 53. 54 is provided with spherical tip portions 37b, 38b, 40b, 41b, 57b, 58b, 60b, 61b that can be pressed. Therefore, the spherical tip portions 37b, 38b, 40b, 41b, 57b, 58b, 60b, 61b of the screw members 37, 38, 40, 41, 57, 58, 60, 61 and the support members 31, 33, 51, A stable pressure contact state is secured between the 53 spherical concave portions 32, 34, 52 and 54, and the brake pedal 14, the rotating member 16 and the connecting link 17 are sandwiched from the axial direction and the radial direction. While being able to support stably, smooth rotation operation can be ensured.

  In the first embodiment, the screw members 38, 41, 58, 61 as clamping means function as adjusting means that can adjust the clamping pressure for clamping the support members 31, 33, 51, 53. Therefore, by adjusting the clamping pressure by the screw members 38, 41, 58, 61, it is possible to easily absorb an assembly error of each member and improve the assemblability.

  3 is a front view illustrating a pedal device according to a second embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 1 illustrating a connection relationship in the pedal device according to the second embodiment.

  In the pedal device according to the second embodiment, as shown in FIGS. 3 and 4, a pedal bracket 73 having a U-shape is fixed to the vehicle body side bracket 71 via a mounting bracket 72. A brake pedal 74 as an operation pedal has an upper end supported by a pedal bracket 73 so as to be pivotable about the first axis O1 as a fulcrum, and a pedal 75 on which a passenger can step on is attached to the lower end. . A tension coil spring (not shown) is stretched between the vehicle body and the brake pedal 74, and the brake pedal 74 is biased counterclockwise in FIG. 3 by the biasing force of the tension coil spring. It is supported.

  The operation rod 76 as an operation rod has one end connected to a brake booster as an operation target means (not shown), and the other end connected to a clevis 77 as a connecting member. It is connected to the part so as to be rotatable about the fifth axis O5 as a fulcrum.

  In the operation pedal device according to the present embodiment, the brake pedal 74 is connected to the brake pedal 74 and the pedal bracket 73 by the first clamping means provided on the pedal bracket 73 at the connecting portion (first axis O1). It is rotatably supported by being sandwiched in the axial direction of the single axis O1. The brake pedal 74 is clamped in the axial direction of the fifth axis O5 by the fifth clamping means provided on the clevis 77 at the connecting portion (fifth axis O5) between the clevis 77 and the brake pedal 74. It is connected so that rotation is possible.

  That is, at the connecting portion (O1) between the brake pedal 74 and the pedal bracket 73, the first support member 81 includes a cylindrical portion 81a and a lid portion 81b fixed to each end portion in the axial direction of the cylindrical portion 81a. A spherical concave portion 82 having a spherical shape is formed on the surface of each lid portion 81b. And as for the brake pedal 74, the connection hole 74a is formed in the upper end part, the outer peripheral surface of the 1st support member 81 fits into this connection hole 74a, and both are being fixed integrally.

  On the other hand, the pedal bracket 73 is formed with a screw hole 83 on each side surface so as to face the first support member 81. The two screw members 84, 85 have flange portions 84a, 85a and tip spherical surface portions 84b, 84b. The screw members 84, 85 are screwed into the screw holes 83 in the side surfaces of the pedal bracket 73 from the outside, respectively, and the tip spherical surface portion 84b. , 85 b are in pressure contact with the respective spherical recesses 82 of the first support member 81. Then, one screw member 84 is prevented from being loosened by being screwed in until the flange portion 84a is in close contact with the side surface portion of the pedal bracket 73, and the other screw member 85 is screwed into the pedal bracket 73 by the lock nut 86 being screwed together. Loosening is prevented by closely contacting the side surface of the plate.

  The radius of curvature of the tip spherical surface portions 84 b and 85 b of each screw member 84 and 85 is set to be larger than the radius of curvature of the spherical concave portion 82 of the support member 81.

  In this case, the first clamping means is constituted by the screw members 84, 85 and the spherical recess 82, and the elastic means is constituted by the first support member 81.

  Further, a fifth support member 91 is integrally embedded in the brake pedal 74 at a connecting portion (O5) between the brake pedal 74 and the clevis 77, and spherical surfaces are formed on both sides of the fifth support member 91. A spherical concave portion 92 is formed.

  On the other hand, the clevis 77 is formed in a U-shape, and a screw hole 93 is formed on each side surface so as to face the fifth support member 91. The two screw members 94 and 95 have flange portions 94a and 95a and tip spherical surface portions 94b and 95b. The screw members 94 and 95 are screwed into the screw holes 93 on the side surface portions of the clevis 77 from the outside, respectively. 95 b is in pressure contact with each spherical recess 92 of the fifth support member 91. One screw member 94 is prevented from being loosened by being screwed in until the flange portion 94 a comes into close contact with the side surface portion of the clevis 77, and the other screw member 95 is screwed into the lock nut 96 and the side surface of the clevis 77. Relaxation is prevented by closely contacting the part.

  The radius of curvature of the spherical surface portions 94b and 95b of the screw members 94 and 95 is set to be larger than the radius of curvature of the spherical concave portion 92 of the support member 91.

  In this case, the fifth clamping means is constituted by the screw members 94 and 95, the spherical recess 92, and the like.

  Further, the first clamping means has an adjusting means capable of adjusting the clamping pressure. That is, each adjusting means in the first clamping means is constituted by a screw member 85 and a lock nut 86. By tightening the screw member 85, the pressure contact force with the support member 81 is increased. By elastically deforming, the support force of the brake pedal 74 can be increased and supported without play.

  Therefore, when the driver depresses the brake pedal 74, the brake pedal 74 rotates against the urging force of the tension coil spring with the first axis O1 as a fulcrum, so that the operation amount (operation force) is clevis. An operation amount is transmitted to the operation rod 76 through 77, and the operation rod 76 moves in the axial direction, so that the brake booster can be operated.

  At this time, when the driver depresses the brake pedal 74, the brake pedal 74 is rotated with respect to the pedal bracket 73. The connecting portion (axial center O1) between the pedal bracket 73 and the brake pedal 74 is the brake pedal 74. The support member 81 integral with the screw members 84 and 85 supports the brake pedal 74 so that the brake pedal 74 can rotate freely, and smoothly rotates without play. The connecting portion (axis O5) between the brake pedal 74 and the clevis 77 is such that the support member 91 integral with the brake pedal 74 is sandwiched between the screw members 94 and 95, so that the brake pedal 74 and the clevis 77 are relatively rotated. It is connected freely and will rotate smoothly without play.

  As described above, in the pedal device according to the second embodiment, the brake pedal 74 is rotatably supported by the pedal bracket 73 with the first axis O1 as a fulcrum, and the operation rod 76 is rotated with respect to the rotation stroke of the brake pedal 74. The brake pedal 74 is axially moved by screw members 84 and 85 provided on the pedal bracket 73 at the connecting portion (axial center O1) between the pedal bracket 73 and the brake pedal 74. It is connected so that it can rotate freely.

  Therefore, when the driver depresses the brake pedal 14, the brake pedal 74 rotates with respect to the pedal bracket 73, but the connecting portion between the dull bracket 73 and the brake pedal 74 is held between the screw members 84 and 84. As a result, the brake pedal 74 smoothly rotates without rattling. As a result, it is possible to reduce the backlash at the connecting portion and suppress the occurrence of wear, thereby improving durability. can do.

  In the second embodiment, an elastically deformable support member 81 having a hollow shape is fixed to the brake pedal 74, and screw members 84 and 85 sandwich the support member 81 in the axial direction. Therefore, it is possible to easily apply a clamping force to the connecting portion between the pedal bracket 73 and the brake pedal 74 in the axial direction, and to ensure a smooth and smooth rotation operation without rattling over a long period of time. it can.

  In the second embodiment, the brake pedal 74 is pivoted by being clamped in the axial direction by the screw members 94 and 95 provided on the clevis 77 at the connecting portion (axial center O5) between the brake pedal 74 and the clevis 77. Connected freely. Therefore, when the driver depresses the brake pedal 74, the brake pedal 74 and the clevis 77 rotate relative to each other, but the connecting portion between the brake pedal 74 and the clevis 77 is held between the screw members 94 and 95. Therefore, the brake pedal 74 and the clevis 77 rotate smoothly without rattling. As a result, it is possible to reduce the backlash at the connecting portion and suppress the occurrence of wear, thereby improving durability. Can be improved.

  In the second embodiment, the screw members 84, 85, 94, and 95 serving as clamping means are provided with spherical tip portions 84b, 85b, 94b, and 95b that can be pressed against the spherical concave portions 82 and 92 of the support members 81 and 91, respectively. Provided. Therefore, a stable pressure contact state is ensured between the spherical tip portions 84b, 85b, 94b, 95b of the screw members 84, 85, 94, 95 and the spherical concave portions 82, 92 of the support members 81, 91. Thus, the brake pedal 74 and the clevis 77 can be sandwiched from the axial direction and the radial direction and can be stably supported, and a smooth rotation operation can be ensured.

  In the second embodiment, the screw members 85 and 95 as clamping means function as an adjusting means that can adjust the clamping pressure for clamping the support members 81 and 91. Therefore, by adjusting the clamping pressure by the screw members 85 and 95, it is possible to easily absorb an assembly error of each member and improve the assemblability.

  In the above-described embodiment, the pedal device of the present invention is configured by connecting the brake pedal 14 and the rotating member 16 by one connecting link 17 or by supporting the brake pedal 74 on the pedal bracket 76. However, it is not limited to this configuration. For example, the arrangement of the brake pedals 14 and 74 and the rotation member 16, the connection position and relationship by the connection link 17, the number of the connection links 17, and the like may be set as appropriate. Further, in this embodiment, elastically deformable support members 31 and 33 having a hollow shape are fixed to the brake pedal 14 and the rotating member 16, and screw members 37, 38, 40, and 41 support the support members 31 and 33. Although configured so as to be sandwiched in the axial direction, this configuration may be applied to a connecting portion between the brake pedal 14 and the connecting link 17 and a connecting portion between the rotating member 16 and the connecting link 17. Furthermore, the spherical tip portion and the spherical concave portion are provided as the clamping means, but the relationship may be reversed.

  As described above, the pedal device according to the present invention is configured to connect the operation pedal and the connection link so as to be rotatable in a sandwiched state, thereby reducing backlash in the connection portion and suppressing the occurrence of wear. It is useful for any pedal device.

It is a front view showing the pedal device concerning Example 1 of the present invention. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1 showing a connection relationship in the pedal device of the first embodiment. It is a front view showing the pedal device concerning Example 2 of the present invention. FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3 showing a connection relationship in the pedal device of the second embodiment.

Explanation of symbols

13,73 Pedal bracket 14,74 Brake pedal (operating pedal)
16 Rotating member 17 Connecting link 19, 76 Operation rod (operation rod)
23 Tension coil spring 31, 81 First support member (elastic means)
32, 82 Spherical concave portion 33 Second support member (elastic means)
34 Spherical concave portion 37, 38, 84, 85 Screw member (clamping means, adjusting means)
51 Third support member 52 Spherical recess 53 Fourth support member 54 Spherical recess 57, 58 Screw member (clamping means, adjusting means)
91 Fifth support member 92 Spherical recess 94, 95 Screw member (clamping means, adjusting means)

Claims (12)

  In the pedal device, the pedal bracket includes an operation pedal that is rotatably supported with the first axis as a fulcrum, and the rotation stroke of the operation pedal can be transmitted to the operation object via the operation rod. And the operation pedal, the operation pedal is rotatably connected by being clamped in the axial direction of the first axial center by a clamping means provided in the pedal bracket. And pedal device.   2. The pedal device according to claim 1, wherein an end portion of the operation rod is connected to a connection member, the connection member is connected to the operation pedal, and a connection having a fifth axis of the connection member and the operation pedal. The pedal device is characterized in that the operation pedal is rotatably connected by being clamped in the axial direction of the fifth axis by a clamping means provided in the coupling member.   2. The pedal device according to claim 1, wherein a pivot member is rotatably supported by the pedal bracket with a second axis parallel to the first axis as a fulcrum, and the operation rod is supported by the pivot member. The operation pedal and the rotation member are connected by a connection link, and the rotation member can be rotated via the connection link according to the rotation stroke of the operation pedal, In the connecting portion between the pedal bracket and the rotating member, the rotating member is rotatably connected by being clamped in the axial direction of the second axis by a clamping means provided on the pedal bracket. A pedal device characterized by that.   2. The pedal device according to claim 1, wherein a pivot member is rotatably supported by the pedal bracket with a second axis parallel to the first axis as a fulcrum, and the operation rod is supported by the pivot member. The operation pedal and the rotation member are connected by a connection link, and the rotation member can be rotated via the connection link according to the rotation stroke of the operation pedal, The operation pedal is pivoted by being clamped in the axial direction of the third axis by the clamping means provided in the connection link at the connection portion having the third axis of the operation pedal and the connection link. A pedal device characterized by being freely connected.   2. The pedal device according to claim 1, wherein a pivot member is rotatably supported by the pedal bracket with a second axis parallel to the first axis as a fulcrum, and the operation rod is supported by the pivot member. The operation pedal and the rotation member are connected by a connection link, and the rotation member can be rotated via the connection link according to the rotation stroke of the operation pedal, In the connecting portion having the fourth axis between the rotating member and the connecting link, the rotating member is clamped in the axial direction of the fourth axis by the clamping means provided in the connecting link. A pedal device characterized in that it is pivotably connected.   An operation pedal that is rotatably supported with a first axis as a fulcrum, and an operation pedal that is rotatably supported with a second axis that is parallel to the first axis as a fulcrum, and an end portion of an operation rod is connected. A pedal device comprising: a rotation member; and a connection link that connects the operation pedal and the rotation member to rotate the rotation member in accordance with a rotation stroke of the operation pedal. In the connecting portion having the third axis with the connecting link, the operation pedal is rotatably connected by being held in the axial direction of the third axis by the holding means provided in the connecting link. Pedal device characterized by being made.   An operation pedal that is rotatably supported with a first axis as a fulcrum, and an operation pedal that is rotatably supported with a second axis that is parallel to the first axis as a fulcrum, and an end portion of an operation rod is connected. A pedal device comprising: a rotating member; and a connecting link that connects the operating pedal and the rotating member to rotate the rotating member according to a rotating stroke of the operating pedal. In the connecting portion having the fourth axis between the connecting link and the connecting link, the rotating member is rotatable by being held in the axial direction of the fourth axis by the holding means provided in the connecting link. A pedal device characterized by being connected to the pedal device.   The pedal device according to any one of claims 3 to 7, wherein the connecting link has an H-shaped cross section.   The pedal device according to any one of claims 1 to 8, wherein an elastic means that is elastically deformable in an axial direction is provided between the holding means and the operation pedal or between the holding means and the rotating member. A pedal device characterized by that.   The pedal device according to any one of claims 1 to 9, wherein the clamping means has a spherical portion that can be pressed.   The pedal device according to any one of claims 1 to 10, wherein the clamping means includes an adjusting means capable of adjusting a clamping pressure.   The pedal device according to any one of claims 1 to 11, wherein the clamping means clamps the operation pedal or the rotating member in an axial direction and a radial direction of the shaft center. .

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