JP5090238B2 - Operation pedal device for vehicle - Google Patents

Description

  The present invention relates to an operation pedal device for a vehicle such as a brake pedal device, and more particularly to a connection structure of a rotation connection portion that transmits an operation force via a connection pin.

(a) an operation pedal that is disposed on a pedal support fixed to the vehicle so as to be rotatable about a support axis, and is operated by a driver, and (b) an operation force of the operation pedal is transmitted. A reaction force member to which a reaction force corresponding to the operation force is applied; and (c) an intermediate member that transmits the operation force between the operation pedal and the reaction force member or between the operation pedal and the reaction force member. A rotating connecting portion that is interposed between and connected to each other so as to be relatively rotatable around a connecting pin parallel to the support axis, and that transmits the operating force through the connecting pin. The operation pedal device for vehicles is widely used, for example, for a brake pedal device for a service brake or a parking brake. The devices described in Patent Documents 1 and 2 are examples thereof, and each of the operation pedals has a hollow structure, and the rotation connecting portion of the operation pedal has a pair of positions located on both sides in the vehicle width direction. A pair of connecting holes are provided on a side wall on a straight line substantially parallel to the support shaft, the connecting pin is inserted through the pair of connecting holes, and a reaction member is connected through a clevis or the like. It has come to be.
JP 2007-122610 A Japanese Patent Laid-Open No. 11-78817

  However, in the structure in which the connecting pin is directly inserted into the connecting hole provided in the pair of side walls of the operation pedal in this way, not only the workability when inserting the connecting pin to the opposite connecting hole is bad, but also the connecting hole Since reaction force acts intensively on the hole edge, there is a risk of wear and buckling, and it is necessary to increase the thickness of the operation pedal. In Patent Document 1, a collar is fixed to one of the connection holes, which improves workability when inserting the connection pin and increases the strength. However, the opposite side wall is still worn, buckled, or the like. Becomes a problem.

  On the other hand, for example, countermeasures as shown in (a) to (c) of FIG. 10 can be considered. 10 (a) to 10 (c) are cross-sectional views showing the rotation connecting portion 112 when the push rod 110, which is a reaction force member, is directly connected to the operation pedal 100. The operation pedal 100 includes: Similar to the above-mentioned Patent Document 1, it is constituted by a pair of halves 102 and 104, and the side edges thereof, that is, the front and rear or upper and lower edges of the vehicle are integrally welded to each other, and the connecting pin 106 and a clevis 108 are coupled to the push rod 110 so as to be relatively rotatable. And (a) is a case where burring holes 114 and 116 in which the peripheral edge portions of the halves 102 and 104 protrude inward as connecting holes are provided in the halves 102 and 104, respectively. Since these act in a concentrated manner, problems such as wear and buckling cannot be solved sufficiently. In addition, since it is difficult to align the pair of burring holes 114 and 116, it is difficult to manage the dimensional accuracy and the manufacturing cost is increased. (b) is a case where the cylindrical collar 120 is disposed across the burring holes 114, 116, and the workability when inserting the connecting pin 106 is improved and the wear is improved. The reaction force concentrates on the periphery of the burring holes 114 and 116, so that there is still a risk of buckling, and the pair of halves 102 and 104 are fixed by welding or the collar 120 is stretched over them. For example, it is difficult to align the pair of burring holes 114 and 116 when they are arranged, which makes it difficult to manage the dimensional accuracy and increases the manufacturing cost. (C) shows the case where the collars 130 and 132 are provided in a simple connection hole, but there is still a risk of buckling at the periphery of the hole, and the pair of halves 102 and 104 are fixed by welding. It is difficult to manage the dimensional accuracy, for example, it is difficult to align the pair of collars 130 and 132 or the connecting holes when the knitting is performed, and the manufacturing cost increases.

  The present invention has been made against the background of the above circumstances, and the object of the present invention is to keep the thickness of the hollow operation pedal thin, while maintaining the thickness of the rotating connecting portion where the connecting pin is disposed, It is in suppressing buckling.

In order to achieve such an object, the first invention provides: (a) an operation pedal which is disposed on a pedal support fixed to a vehicle so as to be rotatable around a support axis, and is operated by a driver; b) a reaction force member to which an operation force of the operation pedal is transmitted and a reaction force corresponding to the operation force is applied; and (c) between the operation pedal and the reaction force member or the operation pedal. And an intermediate member that transmits the operating force to the reaction force member, and these are connected so as to be capable of relative rotation around a connecting pin parallel to the support axis, and through the connecting pin. (D) The operation pedal has a hollow structure and is an outer peripheral portion of the operation pedal, and the rotation connection portion transmits the operation force. The reaction force member or the intermediate through the part The portion connected to the member is provided with a plate-like flange substantially perpendicular to the support shaft center, and the flange is provided with a notch, while (e) the connecting pin is inserted. And a reinforcing member in which a concave groove into which the flange is fitted is formed continuously on the outer peripheral surface in the circumferential direction corresponding to the notch. It is characterized by being inserted into the notch from the opening side of the notch so as to fit the inner peripheral edge of the notch, and integrally fixed to the flange .

2nd invention is the operation pedal device for vehicles of the 1st invention, (a) The said operation pedal is comprised by a pair of halves divided | segmented in the vehicle width direction, A hollow structure is formed by integrally joining plate-shaped flanges provided on the outer periphery in a state of being overlapped with each other, and (b) the reinforcing member is formed of the pair of halves. It has a flat plate shape with a wall thickness larger than the dimension in which the flanges are overlapped, and the concave groove is formed on the outer peripheral surface thereof. (C) The reinforcing member is inserted into the notch of the flange. The reinforcing member is positioned with respect to the operation pedal by fitting the inner peripheral edge of the notch into the concave groove.

  According to a third aspect of the present invention, in the vehicle operation pedal device according to the first or second aspect, the notch and the reinforcing member have a symmetrical shape with respect to an insertion direction when the reinforcing member is inserted into the notch. It is characterized by.

In such an operation pedal device for a vehicle, the outer peripheral portion of the operation pedal having a hollow structure, which is connected to the reaction force member or the intermediate member via the rotation connecting portion, is approximately the support shaft center. A reinforcing plate with a pin insertion hole through which a connecting pin is inserted and a concave groove formed in the outer peripheral surface is formed in the concave groove. since it is inserted into the peripheral portion fitted into is so that cutout is integrally fixed to the flange, reaction force transmitted to the flange via the reinforcing member from the connecting pin is dispersed, the seat due to stress concentration Bending and deformation are prevented, and the rigidity of the plate-like flange is improved. Further, since it is only necessary to insert the connecting pin into the pin insertion hole provided through the reinforcing member, the workability is improved, and even when the connecting pin rotates relative to the pin insertion hole, the pin Wear of the insertion hole is suppressed.
Further, a concave groove into which the flange is fitted is formed on the outer peripheral surface of the reinforcing member so as to correspond to the notch, and the reinforcing member is notched so that the inner peripheral edge of the notch is fitted into the concave groove. Since the reinforcing member can be assembled to the operation pedal in one operation because it only needs to be inserted into the inside, the assembling work is facilitated and the productivity is improved.

2nd invention is a case where it has an operation pedal of the structure joined integrally in the state where the flange provided in the outer peripheral part of a pair of halves was piled up, and the flange is on the outer peripheral part of a reinforcing member. A recessed groove to be fitted is formed corresponding to the notch, and the reinforcing member is positioned with respect to the operation pedal by fitting the inner peripheral edge of the notch into the recessed groove. When the reinforcing member is inserted into the notch before the bodies are joined together, the pair of halves are positioned by the reinforcing member. This eliminates the need for high dimensional accuracy management such as centering, as compared with the case where a pair of burring holes are provided or a collar is provided, and the assembly work of the operation pedal including the reinforcing member is facilitated. , production cost is Ru is reduced.

  In addition, when the flanges of the pair of halves are overlapped and the outer end edges of the flanges are fusion-bonded by arc welding or the like, the portion where the flanges are fitted in the concave grooves of the reinforcing member, If the outer end edge of the flange and the outer peripheral portion of the reinforcing member are configured to substantially coincide with each other, the flange can be integrally welded to the outer peripheral portion of the reinforcing member simultaneously with the welding of the flanges. It is possible to continuously perform welding operations such as these without interruption, and the productivity can be further improved. The pair of halves can be integrally joined before inserting the reinforcing member into the notch, or the joining of the half and the fixing member can be performed in separate steps. Moreover, the manufacturing method, the joining means for the pair of halves, and the fixing means for the reinforcing member are appropriately determined such that the pair of halves can be joined by resistance welding or the like.

  In the third invention, since the notch and the reinforcing member have a symmetrical shape with respect to the insertion direction when the reinforcing member is inserted into the notch, the reinforcing member is rotated 180 ° with respect to the symmetrical centerline. Can be inserted, and the workability of assembling the reinforcing member to the operation pedal is improved, and the productivity is further increased.

  The vehicle operation pedal device of the present invention is preferably applied to an operation pedal device for a service brake or a parking brake on which a relatively large reaction force acts, but other vehicle operation pedal devices such as an accelerator pedal and a clutch pedal. It is also possible to apply to. The reaction force member may be one that mechanically applies a reaction force corresponding to the output, such as a push rod of a brake master cylinder, and electrically detects the depression stroke of the operation pedal and controls the brake force and the like. In the electric operation pedal device, a predetermined reaction force may be applied according to the depression stroke by a simulation device having a biasing means such as a spring.

  The reaction force member may be directly connected to the operation pedal via the rotation connecting portion, but may be connected to the operation pedal via an intermediate lever, a connection link or the like, and a plurality of intermediate levers are interposed. It can also be made.

  The operation pedal having a hollow structure may be a piece of steel plate bent into a cylindrical shape or a square pipe, etc., but a pair of halves such as a hat cross-sectional shape made of steel plates etc. in a posture facing each other. Various modes are possible, for example, the outer peripheral flanges may be overlapped so as to be in contact with each other and integrally joined by welding or the like. The operation pedal having the hollow structure does not necessarily need to be sealed in a bag shape on the entire circumference, and may be partially opened.

  The reinforcing member is made of, for example, mild steel, and is processed into a predetermined shape by cutting, cold forging, or the like, and is integrally fixed to the flange of the operation pedal by fusion bonding by arc welding or the like. It can be fixed to the operation pedal by using various other fixing means such as adhesive means such as attaching, and the material and processing method thereof are also appropriately determined.

In the second invention, in the portion where the outer edge of the flange and the outer peripheral portion of the reinforcement member substantially coincides, integrally melt the flange at the same time the flange mutual melt bonded to the outer peripheral portion of the reinforcing member by arc welding or the like Although it can join, it is also possible to weld-join a flange and a reinforcement member by fillet welding etc. In that case, it is not necessary that the outer edge of the flange and the outer peripheral portion of the reinforcing member substantially coincide with each other, and the reinforcing member is provided in the entire area of the fitting portion between the flange and the concave groove, such as a portion opposite to the opening of the notch. Can be welded to the operation pedal.

  The position and orientation of the notch provided in the flange may be determined so that the reinforcing member is pressed against the terminal portion opposite to the opening of the notch by the reaction force applied to the reinforcing member from the connecting pin. Although it is desirable, when the reinforcing member can be firmly fixed to the operation pedal, various modes such as a load in a direction in which the reinforcing member is pulled out to the opening side of the notch by the reaction force may be applied. Is possible.

  It is desirable to set the dimensions of the reinforcing member so that the reinforcing member is inserted into the notch and positioned, but it is not always necessary to provide it with any play. The position of the pin insertion hole with respect to the operation pedal, that is, the reinforcing member It is possible to have a predetermined play so that the position can be adjusted.

  The notch has a semicircular arc-shaped end portion and a pair of straight portions extending so as to incline in parallel or away from each other continuously at both ends of the end portion, and are generally U-shaped or It is configured to form a square shape. The reinforcing member has a disk shape having a diameter larger than that of the terminal portion, and the concave groove provided on the outer peripheral surface of the disk shape has the disk shape with substantially the same radius as the terminal portion. A semicircular arc-shaped curved portion formed concentrically, and a pair of linear portions provided so as to incline in parallel or away from each other continuously at both ends of the curved portion. It is comprised so that character shape thru | or character shape may be comprised.

  Of a pair of halves constituting a hollow operation pedal, a mortar-shaped slope that expands obliquely around the notch where the reinforcing member is fixed is spaced apart from the notch It is desirable that a part is provided. That is, when the reinforcing member is pressed to the end portion side of the notch by the reaction force applied from the connecting pin to the reinforcing member, the reaction force applied from the reinforcing member to the pair of halves is a mortar-shaped. It becomes efficiently dispersed by the inclined portion and the rigidity is improved, and the buckling due to the reaction force is more effectively suppressed while the plate thickness of the halved body is kept thin. The inclined portion may have various shapes such as a partial taper shape or a spherical shape, or a plurality of flat surfaces joined together.

  For example, the reaction member is directly connected to the operation pedal via the rotation connecting portion. (A) A connection link as the intermediate member is connected to the operation pedal via the rotation connection portion. (B) The connecting link is connected to the reaction force member via an intermediate lever arranged to be rotatable around a rotation axis parallel to the support axis. It can also be configured as follows.

  The connecting pin of the rotating connecting portion is disposed so as to be relatively rotatable with respect to, for example, both the reinforcing member and the reaction force member (or the intermediate member). It is also possible.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1A and 1B are diagrams showing a brake pedal device 10 for a service brake according to an embodiment of the present invention, where FIG. 1A is a left side view and FIG. 1B is a front view. In this brake pedal device 10, an operation pedal 14 is disposed on a pedal support (not shown) that is integrally fixed to the vehicle so as to be rotatable around a shaft center O of a substantially horizontal support shaft 12. When the pedal seat 24 provided at the lower end of 14 is depressed by the driver, the support shaft 12 is rotated clockwise in FIG. A push rod 28 of a brake master cylinder is connected to the operation pedal 14 via a clevis 30 so as to be relatively rotatable around an axis of a connection pin 26 substantially parallel to the support shaft 12. Along with this, the push rod 28 is mechanically pressed to the left in the figure, so that brake hydraulic pressure is generated according to the stepping operation force of the operation pedal 14 and the reaction force is applied to the push rod 28. The push rod 28 is urged so as to protrude from the brake master cylinder, and when the depression operation of the pedal seat 24 is released, the operation pedal 14 returns to the left of the axis O of the support shaft 16 by the urging force. It is rotated and held at the original position shown in FIG. In this embodiment, the connecting portion between the operation pedal 14 and the push rod 28 is a rotation connecting portion 22 to which the present invention is applied, the push rod 28 corresponds to a reaction force member, and the axis O of the support shaft 12 is Corresponds to the support axis.

  The operation pedal 14 has a hollow structure as apparent from FIG. 2 showing an enlarged II-II cross section in FIG. 1A, and is divided in the vehicle width direction, that is, the vertical direction in FIG. It comprises a pair of halves 32 and 34 of a different shape. The halves 32 and 34 are obtained by bending a steel plate with a press, each of which has a hat-shaped cross section, with the hat-shaped opening sides facing each other, and the plate-like flanges 32f on the outer peripheral portion parallel to each other. , 34f are overlapped so that they are in close contact with each other, the outer edges of the flanges 32f, 34f, that is, the edges located in the longitudinal direction or the vertical direction of the vehicle are integrally welded by arc welding such as TIG welding. Has been. The first weld joint W1 in FIGS. 2 and 6 represents the mutual weld joint of the flanges 32f and 34f. In addition, a through hole is provided in a portion of the pair of halves 32 and 34 that is supported by the support shaft 12, and a cylindrical boss 36 is integrated by welding or the like across the halves 32 and 34. It is fixed.

  Of the flanges 32f and 34f, a portion connected to the push rod 28 via the rotation connecting portion 22, that is, a little lower side of the support shaft 12 and a vehicle front side to which a pressing load is applied by the reaction force of the push rod 28. The portion has a flat plate shape substantially perpendicular to the axis O of the support shaft 12, and a reinforcing member 44 is integrally fixed to the reinforcing member 44 via the connecting pin 26. A push rod 28 is connected. FIG. 3 is a perspective view showing the operation pedal 14 side of the rotation connecting portion 22, and FIG. 4 is a perspective view showing a state before the reinforcing member 44 is disposed on the operation pedal 14, which is apparent from FIG. 4. Thus, the notches 50 that open toward the front side of the vehicle are formed in the flanges 32 f and 34 f of the operation pedal 14. The notch 50 has a semicircular arc-shaped end portion 50a and a pair of straight portions 50b and 50c extending continuously in parallel with each other at both ends of the end portion 50 so as to form a U-shape as a whole. It is configured and has a symmetric shape across the U-shaped center line.

  The reinforcing member 44 has a disk shape having a thickness that is larger than the dimension in which the pair of flanges 32f and 34f are overlapped, and a pin insertion hole 48 through which the connecting pin 26 is inserted in the center portion. And a groove 46 having a width dimension into which the flanges 32 f and 34 f are fitted is formed on the outer peripheral surface corresponding to the notch 50. The reinforcing member 44 is assembled to the operation pedal 14 in a posture in which the pin insertion hole 48 is substantially parallel to the axis O, and the connection pin 26 is inserted through the pin insertion hole 48. Connected to the clevis 30. The connecting pin 26 is relatively rotatable with respect to both the reinforcing member 44 and the clevis 30 and is relatively rotated with less friction.

  FIG. 5 is a diagram showing the reinforcing member 44 singly, and has a substantially circular disk shape having a larger diameter than the diameter of the terminal portion 50 a of the notch 50. Further, the concave groove 46 provided on the disk-shaped outer peripheral surface includes a semicircular arc-shaped curved portion 46a formed substantially concentrically with the disk shape at the same radius as the terminal portion 50a, and the curved portion 46a. It has a pair of linear portions 46b and 46c provided continuously in parallel at both ends, and is configured to form a U-shape as a whole, and the reinforcing member 44 has a U-shape of the groove 46. It is symmetrical with respect to the center line. The reinforcing member 44 is made of, for example, mild steel, and is processed into a predetermined shape shown in FIG. 5 by cutting or cold forging. 5 (a) is a left side view of (b), (b) is a front view, (c) is a right side view of (b), and (d) is a view showing a VD-VD cross section in (c). It is.

  Then, the reinforcing member 44 is inserted into the notch 50 from the opening side of the notch 50 as shown in FIG. 4, and the inner peripheral edge of the notch 50 is fitted into the concave groove 46, so that Is positioned. In this case, the width dimension of the notch 50, that is, the dimension between the straight portions 50b and 50c is set to be large so as to have a predetermined play between the straight portions 46b and 46c of the groove 46, The position of the pin insertion hole 48 relative to the pedal 14, that is, the position where the reinforcing member 44 is disposed can be adjusted. The curved portion 46a of the groove 46 is brought into contact with the terminal portion 50a of the notch 50, and a load is transmitted between them. Even when the reinforcing member 44 is fixed to the operation pedal 14 in a state where a slight gap exists between the curved portion 46a of the concave groove 46 and the terminal portion 50a of the notch 50, it is caused by a reaction force during braking operation or the like. Both parts come into contact with each other due to elastic deformation of each part. Further, the reinforcing member 44 and the notch 50 are symmetrical with respect to the U-shaped center line, and the reinforcing member 44 is inserted into the notch 50 in the center line direction. It has a symmetrical shape, and it is possible to insert the reinforcing member 44 in an inverted posture rotated 180 ° around its center line.

  Here, in the present embodiment, as shown in FIG. 4, the pair of halves 32 and 34 are held in a mutually opposing posture so that the flanges 32f and 34f are in close contact with each other. Before doing so, the reinforcing member 44 is inserted into the notch 50 as described above so that the inner peripheral edge of the notch 50 is fitted into the recessed groove 46. Thereby, not only the reinforcing member 44 is positioned with respect to the operation pedal 14, but also the relative positions of the pair of halves 32, 34 constituting the operation pedal 14 are also positioned. The outer edges of the flanges 32f and 34f, that is, the first weld joint W1 are integrally welded together by arc welding. Further, as shown in FIG. 6, in a predetermined range near the opening of the notch 50 of the flanges 32f and 34f, the outer edges of the flanges 32f and 34f substantially coincide with the outer peripheral portion of the reinforcing member 44. Strictly speaking, the flanges 32f and 34f are configured so as to slightly protrude from the concave groove 46, and not only the flanges 32f and 34f but also the outer peripheral portion of the reinforcing member 44 are simultaneously and integrally welded by arc welding. Can be joined. The second weld joint W2 in FIG. 6 (b) is a weld joint including the reinforcing member 44, and welding current such as a welding current is moved while moving a welding torch or the like of arc welding along the outer peripheral edge of the flanges 32f and 34f. By changing the conditions, the welding of the first weld joint W1 and the second weld joint W2 can be performed continuously and continuously in a series of welding operations. 6A is a side view corresponding to FIG. 1A, and FIG. 6B is an enlarged cross-sectional view taken along the VIB-VIB section in FIG.

  Further, of the pair of halves 32 and 34 constituting the operation pedal 14, the periphery of the notch 50 to which the reinforcing member 44 is fixed is obliquely expanded so as to be separated from each other as the distance from the notch 50 increases. The mortar-shaped inclined parts 32c and 34c which open are provided. The reaction force applied to the reinforcing member 44 from the connecting pin 26 presses the reinforcing member 44 toward the terminal portion 50 a side of the notch 50, but the reaction applied to the pair of halves 32 and 34 from the reinforcing member 44. The force is efficiently dispersed by the mortar-shaped inclined portions 32c and 34c. The inclined portions 32c and 34c of the present embodiment are smoothly formed so as to form a part of a tapered shape.

  FIG. 7 is a diagram for explaining a transmission path of a reaction force applied from the push rod 28 to the reinforcing member 44 via the connecting pin 26 in the brake pedal device 10 of the present embodiment, and corresponds to FIG. It is a side view. A reaction force F1 indicated by a large arrow is a reaction force transmitted from the connecting pin 26 to the reinforcing member 44. From the reinforcing member 44, the reaction force F2 indicated by the middle arrow and the second weld joint W2 and the notch 50 is transmitted to the operation pedal 14 through the terminal portion 50a, and distributed. As a result, the stress concentration on the flanges 32f and 34f is relaxed, the surface pressure is reduced, and the rigidity of the pair of halves 32 and 34 is increased, so that the plate thickness of the halves 32 and 34 is kept thin. Buckling due to reaction force is suppressed. In addition, mortar-shaped inclined portions 32 c and 34 c are provided around the portion of the pair of halves 32 and 34 where the reinforcing member 44 is fixed so as to expand obliquely as the distance from the reinforcing member 44 increases. Therefore, the reaction force F2 transmitted from the reinforcing member 44 to the flanges 32f, 34f of the pair of halves 32, 34 is due to the presence of the inclined portions 32c, 34c as the reaction force F3 indicated by the small arrow. Further, the surface pressure that is dispersed efficiently and acts on the pair of halves 32 and 34 is further reduced.

  As described above, in the brake pedal device 10 of the present embodiment, the flanges 32f and 34f provided on the outer peripheral portion of the hollow operation pedal 14 are connected to the push rod 28 via the rotary connecting portion 22. The portion has a flat plate shape substantially perpendicular to the axis O of the support shaft 12 and is provided with a notch 50, and is provided with a pin insertion hole 48 through which the connecting pin 26 is inserted. Since the member 44 is inserted into the notch 50 and is integrally fixed, the reaction force F2 transmitted from the connecting pin 26 to the flanges 32f and 34f via the reinforcing member 44 is dispersed, and the seat is caused by stress concentration. Bending and deformation are prevented, and the rigidity of the plate-like flanges 32f and 34f is improved.

  In addition, since the connecting pin 26 only needs to be inserted into the pin insertion hole 48 provided through the reinforcing member 44, the workability is improved, and the reaction force F1 is generated over the entire inner peripheral surface of the pin insertion hole 48. Since it is received, wear of the pin insertion hole 48 is suppressed even when the connecting pin 26 rotates relatively.

  Further, in this embodiment, the reinforcing pedal 44 includes the operation pedal 14 having a structure in which the flanges 32f and 34f provided on the outer peripheral portions of the pair of halves 32 and 34 are joined together in an overlapped state. A concave groove 46 into which the flanges 32f and 34f are inserted is formed in the outer peripheral portion of the outer peripheral portion corresponding to the notch 50, and the inner peripheral edge portion of the notch 50 is inserted into the concave groove 46 to operate. Since the reinforcing member 44 is positioned with respect to the pedal 14, when the reinforcing member 44 is inserted into the notch 50 before the pair of halves 32, 34 are integrally joined, the pair of reinforcing members 44 is formed by the reinforcing member 44. The half halves 32 and 34 are positioned. This eliminates the need for high dimensional accuracy management such as centering as compared with the case where bosses, collars, and the like are disposed, and facilitates assembly of the operation pedal 14 including the reinforcing member 44, thereby reducing manufacturing costs. Is done. In particular, since the reinforcing member 44 may be inserted into the notch 50 so that the inner peripheral edge of the notch 50 is fitted into the recessed groove 46, the reinforcing member 44 can be assembled to the operation pedal 14 in one operation. It is possible, and assembly work becomes easier and productivity is improved.

  In the present embodiment, the flanges 32f and 34f of the pair of halves 32 and 34 are overlapped and the outer edges of the flanges 32f and 34f are melt-bonded by arc welding. In a predetermined range in the vicinity of the opening of the notch 50 in which the flanges 32f and 34f are inserted into the groove 46, that is, in the second welded joint W2, the outer edge of the flanges 32f and 34f and the outer peripheral portion of the reinforcing member 44 are Since the flanges 32f and 34f are welded together, the outer peripheral portion of the reinforcing member 44 can be integrally welded to the flanges 32f and 34f. As a result, the reinforcing member 44 is joined to the flanges 32f and 34f simultaneously with the welding operation of the first weld joint W1 that melts and joins the outer edges of the flanges 32f and 34f to each other and the fusion joining of the flanges 32f and 34f. It is possible to continuously perform the welding operation of the second welding joint portion W2 to be performed continuously in a series of operations, and to further improve productivity.

  In the present embodiment, the notch 50 and the reinforcing member 44 are symmetrical with respect to the insertion direction when the reinforcing member 44 is inserted into the notch 50, that is, the U-shaped center line of the notch 50 or the groove 46. Therefore, the reinforcing member 44 can be inserted in a posture rotated by 180 ° with respect to the symmetrical center line, and the workability of assembling the reinforcing member 44 to the operation pedal 14 is improved. , Productivity will be higher.

  In addition, mortar-shaped inclined portions 32 c and 34 c are provided around the portion of the pair of halves 32 and 34 where the reinforcing member 44 is fixed so as to expand obliquely as the distance from the reinforcing member 44 increases. Therefore, the reaction force F2 transmitted from the reinforcing member 44 to the flanges 32f and 34f of the pair of halves 32 and 34 is further increased due to the presence of the inclined portions 32c and 34c as the reaction force F3 indicated by the small arrow. Distributed efficiently. As a result, the surface pressure acting on the pair of halves 32 and 34 is further reduced, the rigidity is improved, and buckling due to the reaction force is more effectively performed while the plate thickness of the halves 32 and 34 is kept thin. It is suppressed.

  Next, another embodiment of the present invention will be described. In the following embodiments, parts that are substantially the same as those in the above embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  The brake pedal device 60 of FIG. 8 is provided with an intermediate lever 64 so as to be rotatable around the axis of the second support shaft 62 substantially parallel to the axis O of the support shaft 12. A connecting link 66 is disposed across the lever 64. Then, when the pedal seat 24 of the operation pedal 14 is depressed, the operation pedal 14 is rotated clockwise in FIG. 8 via the connection link 66 connected to the operation pedal 14. The intermediate lever 64 is mechanically rotated counterclockwise about the second support shaft 62. The push rod 28 is coupled to the upper end portion of the intermediate lever 64 via a coupling pin 26 substantially parallel to the second support shaft 62, and the push rod 28 is mechanically moved with the rotation of the intermediate lever 64. When pressed in the left direction in the figure, the brake hydraulic pressure is generated according to the depressing operation force of the operation pedal 14 and the reaction force is applied to the push rod 28.

  FIG. 9 is an enlarged view of the IX-IX cross section in FIG. 8, and a pair of the connecting links 66 are disposed so as to be located on both sides of the operation pedal 14 and the intermediate lever 64, and the support shaft 12. It is connected to the operation pedal 14 through a first connection pin 68 substantially parallel to the axis O of the shaft O and is relatively rotatable, and intermediate through a second connection pin 70 substantially parallel to the first connection pin 68. It is connected to the lever 64 so as to be relatively rotatable. These connecting pins 68 and 70 are disposed through the operation pedal 14 and the intermediate lever 64, respectively, and a pair of connecting links 66 are connected to end portions protruding on both sides thereof, and a snap ring or the like. It is secured by.

  In the present embodiment, a portion where the operation pedal 14 and the connection link 66 are connected to each other so as to be relatively rotatable is a rotation connection portion 72, and the reinforcing member 44 disposed on the operation pedal 14 is similar to the above-described embodiment. On the other hand, the connection link 66 is connected around the axis of the first connection pin 68 so as to be relatively rotatable. The first connecting pin 68 corresponds to a connecting pin of the rotating connecting portion 72, can be rotated relative to both the reinforcing member 44 and the connecting link 66, and is relatively rotated with less friction. Also in the present embodiment, the reinforcing member 44 is integrally disposed on the operation pedal 14, so that the same effect as in the above embodiment can be obtained.

  In this embodiment, the case where the operation pedal 14 has a hollow structure has been described. However, the intermediate lever 64 has a hollow structure similar to that of the operation pedal 14 and corresponds to the connection pin 26 and the second connection pin 70. By applying the reinforcing member 44 to the rotational connection portion of the position, it is possible to further reduce the weight of the entire apparatus while obtaining the same effect as in the present embodiment.

  As mentioned above, although the Example of this invention was described in detail based on drawing, these are one embodiment to the last, and 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 the brake pedal apparatus for service brakes of the vehicle to which this invention was applied, (a) is a left view, (b) is a front view. It is an enlarged view of the II-II cross section in Fig.1 (a). It is a perspective view which expands and shows the vicinity of the rotation connection part by the side of the operation pedal in the brake pedal apparatus of FIG. In FIG. 3, it is a perspective view which shows the state before a reinforcement member is assembled | attached to an operation pedal. FIG. 5A is a left side view, FIG. 5B is a front view, FIG. 5C is a right side view, and FIG. 6D is a VD-VD cross-sectional view in FIG. It is a figure which shows the vicinity of the rotation connection part by the side of an operation pedal, (a) is a side view corresponding to (a) of FIG. 1, (b) is an enlarged view of the VIB-VIB cross section in (a). It is a figure explaining the transmission path | route of the reaction force applied to a reinforcement member, and is a side view corresponding to (a) of FIG. It is a figure which shows the other Example of this invention, and is a side view corresponding to (a) of FIG. It is an enlarged view of the IX-IX cross section in FIG. It is a figure explaining some aspects of a rotation connection part in case a reaction force member is directly connected with an operation pedal, and is sectional drawing corresponding to FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10, 60: Brake pedal apparatus (vehicle operation pedal apparatus) 12: Support shaft 14: Operation pedal 22, 72: Rotation connection part 26: Connection pin 28: Push rod (reaction force member) 32, 34: Half body 32f, 34f: Flange 44: Reinforcement member 46: Concave groove 48: Pin insertion hole 50: Notch 66: Connection link (intermediate member) 68: First connection pin (connection pin) O: Shaft center (support shaft center)

Claims (3)

An operation pedal disposed on a pedal support fixed to the vehicle so as to be rotatable around a support axis, and operated by a driver;
A reaction force member to which an operation force of the operation pedal is transmitted and a reaction force corresponding to the operation force is applied;
It is interposed between the operation pedal and the reaction force member, or between the operation pedal and an intermediate member that transmits the operation force to the reaction force member, and these are connected in parallel with the support axis. A rotationally connecting portion that is connected to the pin so as to be relatively rotatable, and that transmits the operating force via the connecting pin;
In a vehicle operation pedal device having
The operation pedal has a hollow structure, and the support shaft center is provided on a portion of the outer periphery of the operation pedal that is connected to the reaction force member or the intermediate member via the rotation connection portion. Is provided with a plate-like flange substantially perpendicular to the flange, and the flange is provided with a notch,
There is provided a pin insertion hole through which the connecting pin is inserted, and a reinforcing member in which a concave groove into which the flange is inserted is continuously formed in the outer circumferential surface corresponding to the notch. vehicle operating pedal device characterized in that it is integrally fixed from the opening side of the notch so that the inner peripheral edge portion of the notch is fitted to the flange is inserted into the notch in the groove. The operation pedal is composed of a pair of halves divided in the vehicle width direction, and the parallel plate-like flanges provided on the outer periphery of the pair of halves are overlapped. It is made into a hollow structure by being joined together,
The reinforcing member has a flat plate shape having a wall thickness larger than the dimension in which the flanges of the pair of halves are overlapped, and the concave groove is formed on the outer peripheral surface thereof .
The reinforcing member is inserted into the notch of the flange, and the reinforcing member is positioned with respect to the operation pedal by inserting an inner peripheral edge of the notch into the concave groove. Item 4. The vehicle operation pedal device according to Item 1. The vehicle operation pedal device according to claim 1, wherein the notch and the reinforcing member have a symmetrical shape with respect to an insertion direction when the reinforcing member is inserted into the notch. .

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