JP2012035755A - Hollow pedal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce weight while maintaining predetermined strength and rigidity in a hollow pedal in which the ends of a pair of divided bodies are joined to each other by being covered with a synthetic resin.SOLUTION: Bent projections 38 are provided to the ends 32e of one divided body 32, and inserted into retaining holes 40 provided to the flanges 34f of the other divided body 34, respectively. By the engagement of the bent projections 38 with the retaining holes 40, the relative displacement of the divided bodies in all directions parallel to the overlapped surfaces of the ends 32e and the flanges 34f is restricted, and a high joint strength can be provided to the divided bodies by merely covering the overlapped parts of the ends 32e and the flanges 34f with the synthetic resin 36. Since the strength and the rigidity of a pedal arm 14 are increased, the weight of the pedal can be reduced by reducing the thickness of the pair of divided bodies 32, 34 accordingly.

Description

  The present invention relates to a hollow pedal, and more particularly to a technique for further reducing the weight while ensuring a predetermined strength and rigidity.

  The terminal is provided with a pair of divided bodies in which the terminal portions are stacked in parallel so as to form a hollow structure, and the terminal is provided by a synthetic resin provided so as to cover the outside of the terminal portion so as to straddle the U-shape. There has been proposed a hollow pedal that has a pedal arm that is integrally joined to each other and that is pivotably disposed around a predetermined support axis. The vehicle brake pedal described in Patent Document 1 is an example of such a hollow pedal, and is lighter and less expensive than a case where a single thick plate material is used as a pedal arm or a terminal portion is welded. Can be configured.

JP 2010-18116 A

  However, there is a demand for further weight reduction in such a hollow pedal. For this reason, it is conceivable to reduce the thickness of the pair of divided bodies, but sufficient strength and rigidity required for the pedal arm are ensured. There was a problem that I could not.

  The present invention has been made against the background of the above circumstances, and the purpose thereof is to secure a predetermined strength and rigidity in a hollow pedal in which the terminal portions of a pair of divided bodies are joined with a synthetic resin coating. However, it is to be able to further reduce the weight.

  In order to achieve this object, the first invention includes a pair of divided bodies in which terminal portions are stacked in parallel to each other so as to form a hollow structure, and the outside of the terminal portions straddles a U-shape. A hollow pedal that has a pedal arm that is integrally joined with a synthetic resin so as to be covered with a plastic arm and that is pivotably disposed around a predetermined support axis. And a hook engaging portion that is provided in a direction intersecting with the overlapping surface of the terminal portion and restricts relative displacement of the pair of divided bodies in a direction parallel to the overlapping surface.

  A second invention is the hollow pedal according to the first invention, wherein the hook engaging portion is a projecting portion provided so as to protrude from one of the pair of divided bodies toward the other, and the other divided body. It is characterized by being engaged.

  3rd invention is the hollow pedal of 2nd invention, (a) The said protrusion part is a bending protrusion bent so that it might go to the other division body from the said terminal part of said one division body, (b) The bent projection is inserted into a retaining hole provided in the other divided body.

  4th invention is the hollow pedal of 3rd invention, The said bending protrusion is bent so that a cross section may form a crank shape, and it is inserted in the said latching hole, and that passed the latching hole. A crank-shaped front end portion is overlapped in parallel with a terminal portion of the other divided body.

  According to a fifth aspect of the present invention, in the hollow pedal of the second aspect, the protruding portion is a burring hole protruding toward the other divided body and is fitted in a through hole provided in the other divided body. Features.

  According to a sixth aspect of the present invention, in the hollow pedal of the first aspect, (a) the close contact portion where the pair of divided bodies are overlapped with each other is provided with a through hole so as to penetrate the pair of divided bodies. b) The hook engaging portion is formed by filling the through hole with the synthetic resin when the pair of divided bodies are covered with the synthetic resin, and is integrated with the inner wall surface of the synthetic resin located on both sides of the contact portion. It is the connection part hung over.

  7th invention is the hollow pedal of 6th invention, (a) The said contact part is the terminal part of a pair of said division body, The said through-hole is provided so that the terminal part may be penetrated, (b) The connecting portion is integrally stretched over an inner wall surface of the U-shaped synthetic resin that covers the outside of the terminal portion.

  An eighth invention is the hollow pedal according to the sixth invention, wherein (a) the contact portion is an intermediate contact portion that is overlapped so as to be in surface contact with an intermediate portion other than the terminal portions of the pair of divided bodies. (B) the synthetic resin is provided so as to cover the entire circumference of the pair of divided bodies, including the intermediate contact portion, The connecting portion is integrally provided so as to be stretched over the inner wall surface of the synthetic resin located on both sides of the intermediate contact portion.

  In such a hollow pedal, a hook engaging portion is provided in a direction intersecting the overlapping surface of the terminal portion, and relative displacement of the pair of divided bodies in a direction parallel to the overlapping surface is restricted. Therefore, the joint strength of the terminal portion by the synthetic resin coating is improved. Thereby, the strength and rigidity of the pedal arm are increased, and the thickness of the pair of divided bodies can be reduced by that amount, thereby reducing the weight.

  The second aspect of the present invention is a case where the hook engaging portion is constituted by a protruding portion protruding from one of the pair of divided bodies toward the other, and the overlapping surfaces are formed by the pair of divided bodies being engaged with each other. The relative displacement in the direction parallel to is reliably restricted.

  According to a third aspect of the present invention, the protruding portion is a bent projection provided at the terminal portion of one divided body, and is inserted into a latching hole provided in the other divided body. It is possible to properly prevent relative displacement in the direction parallel to the overlapping surface. In the fourth invention in which the folding protrusion is a crank shape, the bending protrusion is inserted into the retaining hole provided in the other divided body, and the tip portion passing through the retaining hole is the other divided body. Since they are overlapped in parallel with the terminal portion, not only the relative displacement in the direction parallel to the overlapping surface but also the relative displacement in the direction away from each other is restricted. Thereby, the strength and rigidity of the pedal arm are further increased, and the thickness of the pair of divided bodies can be reduced to further reduce the weight.

  According to a fifth aspect of the present invention, since the protruding portion is a burring hole and is fitted in a through hole provided in the other divided body, it is configured simply and inexpensively and has a relative displacement in a direction parallel to the overlapping surface. Can be prevented appropriately.

  According to a sixth aspect of the present invention, a through hole is provided in a close contact portion where a pair of divided bodies are overlapped with each other, and by filling the through hole with a synthetic resin, the inside of the synthetic resin located on both sides of the close contact portion In the case where the hook engaging portion is configured by the connecting portion provided so as to be stretched integrally with the wall surface, it is configured easily and inexpensively and is not only relatively displaced in the direction parallel to the overlapping surface but also separated from each other. Since the relative displacement in the direction is also restricted, the strength and rigidity of the pedal arm are further increased, and the thickness of the pair of divided bodies can be reduced to further reduce the weight.

  A seventh invention is a U-shaped synthetic resin in which the contact portion is a terminal portion of the pair of divided bodies, a through hole is provided so as to penetrate the terminal portion, and the outer surface of the terminal portion is covered. This is a case where the connecting portion is provided so as to be spanned integrally with the inner wall surface, and is simple and inexpensive.

  According to an eighth aspect of the present invention, an intermediate contact portion is provided so as to be in surface contact with each other at an intermediate portion other than the terminal portions of the pair of divided bodies, and the synthetic resin is provided over the entire circumference of the pair of divided bodies including the intermediate contact portion. The through hole is provided in the intermediate contact portion, and the synthetic resin on both sides of the intermediate contact portion is connected by the connection portion. That is, not only the terminal portions of the pair of divided bodies are joined by the synthetic resin covering the U-shape, but also the intermediate contact portions are joined by the synthetic resin via the connecting portion, It becomes more firmly joined. Thereby, the strength and rigidity of the pedal arm are further increased, and the thickness of the pair of divided bodies can be reduced to further reduce the weight.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a vehicle operating pedal to which the present invention is applied, in which (a) is a left side view, (b) is an enlarged view of the IB-IB cross section in (a), and (c) is an IC-IC in (a). It is an enlarged view of a cross section. It is a figure explaining the other Example of this invention, All are (a)-(c), It is sectional drawing equivalent to FIG.1 (c). FIG. 5 is a diagram for explaining still another embodiment of the present invention, and (a) to (c) are cross-sectional views corresponding to FIG. 1 (c). FIG. 5 is a diagram for explaining still another embodiment of the present invention, and (a) to (c) are cross-sectional views corresponding to FIG. 1 (c).

  The hollow pedal of the present invention is preferably applied to an operation pedal for a service brake or a parking brake on which a relatively large reaction force acts, but other vehicle operation pedals such as an accelerator pedal and a clutch pedal, or other than a vehicle It is also possible to apply to the operation pedal. A pedal seat (pad) to be stepped on is provided at the tip (lower end) of the pedal arm, but the pedal seat can be integrally formed with a synthetic resin that covers the terminal portion of the pedal arm. Alternatively, a separately prepared pedal seat may be integrally joined by insert molding or the like.

  The pair of divided bodies constituting the pedal arm has, for example, a hat-shaped cross section obtained by dividing the left and right substantially symmetrically into two planes parallel to the plane of rotation of the hollow pedal (a plane perpendicular to the support axis). Various forms that can form a hollow structure are possible, for example, a half-shaped body having a longitudinal shape may be formed, but one may be a flat-plate shape in which one is a cross-sectional hat shape and the other is a substantially flat shape. It is desirable to divide into two so that the end portions that are overlapped with each other and joined by the synthetic resin are positioned at the long side portions in the front and rear directions in the depression direction of the hollow pedal. Although this division body is comprised, for example with a metal plate material, it is also possible to employ | adopt materials other than a metal, such as composite materials, such as a fiber reinforced plastic integrally molded previously.

  As the synthetic resin covering the terminal portions of the pair of divided bodies, various synthetic resin materials having relatively high rigidity such as PPS (polyphenylene sulfide), PBT (polybutylene terephthalate), or fiber reinforced composite materials thereof are used. be able to. This synthetic resin is provided by injection molding (insert molding) or the like so as to cover the outer side of the terminal portion so as to straddle the U-shape, but not only the terminal portion but also the outer peripheral surface of the hollow pedal arm over the entire circumference. It may be provided so as to cover. On the other hand, it is not necessary to cover the terminal portions of the pair of divided bodies with the synthetic resin over the entire length, a part of the terminal portions may be exposed to the outside, or the terminal portions of the pair of divided bodies may cover the entire length. The pedal arms need not be overlapped in parallel with each other. For example, the end (upper end or lower end) of the pedal arm in the longitudinal direction may partially open.

  As the hook engaging portion, a protruding portion provided in one divided body as in the second invention or a connecting portion integrally provided in the synthetic resin as in the sixth invention is suitable. For example, the terminal of a pair of divided bodies Although it is provided so as to intersect with the same plane as the overlapping surface of the part, it may be provided in a direction intersecting with the overlapping surface at a position offset from the overlapping surface. In 2nd invention, the protrusion part which protrudes toward the other party can also be provided in both of a pair of division body. This protrusion is, for example, a bent protrusion formed by bending a protrusion provided at the tip of the terminal part at a substantially right angle, a burring hole provided in the terminal part or other flat contact part, and the like. By inserting into a latching hole or through-hole provided in the terminal part etc., all relative displacement in the direction parallel to the overlapping surface is prevented, but relative displacement in one direction parallel to the overlapping surface is prevented. You can just stop. Further, as in the fourth invention, a crank-shaped bending projection can also be adopted.

  For example, it is desirable to provide each of the protruding portions and the connecting portions at the terminal portions on both sides of the pair of divided bodies, and it is preferable to provide a plurality of the protruding portions and the connecting portions along the longitudinal direction of the long pedal arm. In the case where an intermediate contact portion is provided at an intermediate position between the terminal portions on both sides, the intermediate contact portion can also be provided. It is also possible to provide a combination of a plurality of types of protruding portions and connecting portions.

  In the eighth invention, the synthetic resin is provided on the entire circumference of the pair of divided bodies including the intermediate contact portion. However, when the other invention is implemented, the synthetic resin may be provided so as to cover only the terminal portion. . Conversely, when the intermediate contact portion is not provided or when the synthetic resin connecting portion is not provided, the synthetic resin may be provided on the entire circumference of the pair of divided bodies.

  As the hook engaging portion, each of the pair of divided bodies may have a cross-sectional hat shape, and the tip of the hat portion of one divided body may be fitted inside the hat portion of the other divided body. In that case, the part fitted inside the hat part of the other divided body among the hat parts of one divided body corresponds to the hook engaging portion (protruding portion of the second invention).

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing a vehicle operation pedal 10 used as, for example, a service brake pedal, where (a) is a left side view, (b) is an enlarged view of an IB-IB section in (a), and (c) is ( It is an enlarged view of IC-IC cross section in a). The vehicle operation pedal 10 includes a pedal arm 14 rotatably disposed around an axis (support axis) O of a substantially horizontal support shaft 12 via a pedal support (not shown). When the pedal seat 24 provided at the lower end of the arm 14 is depressed by the driver, the support shaft 12 is rotated clockwise in FIG. An output rod 28 is connected to the pedal arm 14 via a clevis 30 so as to be capable of relative rotation about the axis of a clevis pin 26 substantially parallel to the support shaft 12. When 28 is mechanically pressed in the left direction in the drawing, for example, a brake hydraulic pressure of a wheel brake is generated according to the stepping operation force on the pedal seat 24.

  The operation pedal 10 is a hollow pedal having a substantially hollow structure as a whole, and the long pedal arm 14 is a plane parallel to the rotation plane (a plane parallel to the paper surface of FIG. 1A). A pair of divided bodies 32 and 34 having a shape divided in the width direction is provided. One divided body 32 has a substantially flat plate shape, while the other divided body 34 has a hat-shaped (shallow convex shape) cross section, and plate-like flanges provided on both sides. 34f is superimposed on the terminal portions 32e on both sides of the divided body 32, so that a hollow structure is formed as shown in FIGS. 1 (b) and 1 (c). Each of these divided bodies 32 and 34 is made of a metal plate, and the divided body 34 has a hat shape in cross section by bending or drawing by a press. In addition, the terminal portion 32e of the divided body 32 is provided with bending projections 38 that protrude toward the flange 34f at a plurality of locations spaced apart in the longitudinal direction (a total of five locations in the embodiment). The flange 34 f is provided with a plurality of retaining holes 40 through which the bending protrusions 38 are inserted, corresponding to the plurality of bending protrusions 38. The bending protrusion 38 is a protrusion provided so as to protrude outward from the terminal portion 32e, and is bent at a substantially right angle by a bending process using a press. The bending protrusion 38 corresponds to a protruding portion, and is formed between the flange 34f and the terminal portion 32e. It functions as a hook engaging portion that regulates relative displacement in a direction parallel to the overlapping surface. The flange 34 f is a terminal portion of the divided body 34. A present Example is an Example of Claims 1-3.

  The pedal arm 14 having such a hollow structure has the terminal portion 32e and the flange 34f in a state where the terminal portion 32e and the flange 34f are overlapped so that the plurality of bent protrusions 38 are inserted into the retaining holes 40, respectively. The synthetic resin 36 is provided by insert molding or the like so as to cover the outer side of the 34f so as to straddle the U-shape, so that the pair of divided bodies 32 and 34 are integrally joined so as not to be detached. The synthetic resin 36 is made of a material having relatively high rigidity such as PPS, PBT, or a fiber reinforced composite material thereof, and is integrally formed on the peripheral portions of the pair of divided bodies 32 and 34 by injection molding. In FIG. 1A, the hatched portion of the peripheral edge of the pedal arm 14 is covered with the synthetic resin 36, and the pedal seat 24 is made of the synthetic resin 36. In the present embodiment, a flange 34 f is provided on substantially the entire circumference of the divided body 34 except for a portion where the pedal seat 24 is provided, and is superimposed on the terminal portion 32 e of the divided body 32.

  Here, in the vehicle operation pedal 10 of the present embodiment, the bent protrusion 38 is provided in the terminal portion 32e of one divided body 32, and the latching hole 40 provided in the flange 34f of the other divided body 34 is provided. Since these are inserted, the relative displacement in all directions parallel to the overlapping surface of the terminal portion 32e and the flange 34f is restricted by the engagement of the bending projections 38 and the retaining holes 40. Even if the overlapping portion of the portion 32e and the flange 34f is simply covered with the synthetic resin 36, a high bonding strength can be obtained. Thereby, the strength and rigidity of the pedal arm 14 are increased, and the thickness of the pair of divided bodies 32 and 34 can be reduced by that amount, thereby reducing the weight.

  Further, in this embodiment, since one of the divided bodies 32 is provided with a bending projection 38 and is inserted into a retaining hole 40 provided in the other divided body 34, the pair of divided bodies 32, 34 are engaged with each other. By being combined, the relative displacement in the direction parallel to the overlapping surface is surely restricted.

  Further, in the present embodiment, a bent projection 38 is provided on the terminal portion 32e of one divided body 32 and is inserted into the retaining hole 40 provided in the flange 34f of the other divided body 34. Thus, it can be configured simply and inexpensively, and relative displacement in a direction parallel to the overlapping surface can be appropriately prevented.

  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.

  FIGS. 2 (a) to 2 (c) are diagrams for explaining other embodiments of the present invention. Each of them is a sectional view corresponding to FIG. 1 (c), that is, a portion provided with a hook engaging portion. It is sectional drawing. In the pedal arm 50 of (a), instead of providing the folding projection 38 and the retaining hole 40, a concave portion 52 having a hat-shaped cross section is provided in the divided body 32 by bending or drawing, and the concave portion 52 is divided. It is fitted inside the hat portion of the body 34. As a result, the relative displacement in the left-right direction in FIG. 2 (a) is restricted, so that the joining strength of the divided bodies 32 and 34 is improved, and the strength and rigidity of the pedal arm 50 are increased. The thickness of 32 and 34 can be reduced to reduce the weight. The recessed portion 52 corresponds to a protruding portion and functions as a hook engaging portion. In addition, although this recessed part 52 can also be provided continuously in the whole area of the longitudinal direction of the division body 32, it may be spaced apart in the longitudinal direction of the division body 32, and may only be provided discontinuously. By providing the concave portions 52 in the entire region in the longitudinal direction or at a plurality of locations, the relative displacement in the longitudinal direction is also appropriately regulated. This embodiment is an embodiment of claims 1 and 2.

  2 (b), instead of providing the bending projection 38 and the retaining hole 40, the pedal arm 54 is provided at a plurality of portions of the end portion 32e of the divided body 32 and the flange 34f of the divided body 34 which are overlapped with each other. A through hole 56 is provided so as to pass through the terminal portion 32e and the flange 34f, and when the synthetic resin 36 is injection-molded, the through hole 56 is filled with the synthetic resin 36, thereby forming a U-shape. A connecting portion 58 is integrally provided over the inner wall surface of the synthetic resin 36. The presence of the connecting portion 58 restricts the relative displacement in all directions parallel to the overlapping surface of the terminal portion 32e and the flange 34f, and also restricts the relative displacement in the direction in which both are separated from each other. The strength and rigidity of the arm 54 can be further increased, and the thickness of the pair of divided bodies 32 and 34 can be reduced correspondingly, thereby further reducing the weight. Further, since the synthetic resin 36 is filled in the through hole 56 when the synthetic resin 36 is injection-molded and the connecting portion 58 is provided integrally, the structure is simple and inexpensive. The connecting portion 58 functions as a hook engaging portion, and the terminal portion 32e provided with the through hole 56 and the flange 34f correspond to a close contact portion. This embodiment is an embodiment of claims 1, 6 and 7.

  The pedal arm 60 shown in FIG. 2C has one of the folding projections 38 provided on both sides of the divided body 32 as a crank-shaped folding projection 62, and a latching hole 64 larger than the latching hole 40. While inserting the inside, the front-end | tip part of the crank-shaped bending protrusion 62 is piled up substantially parallel to the surface of the back side of the flange 34f. In this case, the relative displacement in all directions parallel to the overlapping surface of the terminal portion 32e and the flange 34f is restricted, and the relative displacement in the direction in which both are separated from each other is also restricted. Further, the rigidity is further increased, and the thickness of the pair of divided bodies 32 and 34 can be reduced by that amount, thereby further reducing the weight. The bending protrusion 62 corresponds to a protruding portion and functions as a hook engaging portion. This embodiment is an embodiment of claims 1 to 4.

  FIGS. 3 (a) to 3 (c) are diagrams for explaining still another embodiment of the present invention, and each is a sectional view corresponding to FIG. 1 (c), that is, a portion provided with a hook engaging portion. As in the pedal arm 54 of FIG. 2 (b), the through hole 56 is provided and the connecting portion 58 is integrally formed so as to be spanned over the inner wall surface of the U-shaped synthetic resin 36. This is the case. The pedal arm 70 of (a) has a bent projection 38 provided on the divided body 32 like the pedal arm 14 of FIG. 1 and is inserted through a through hole 56 provided on the flange 34f of the divided body 34. Yes. The through hole 56 of the divided body 34 is formed larger than the through hole 56 of the divided body 32, and also serves as a latching hole to which the bent protrusion 38 is latched. This embodiment is an embodiment of claims 1 to 3, 6 and 7.

  The pedal arm 72 in FIG. 3B is provided with a recess 52 in the divided body 32 and is fitted inside the hat portion of the divided body 34 like the pedal arm 50 in FIG. This embodiment is an embodiment of claims 1, 2, 6, and 7.

  The pedal arm 74 of FIG. 3C is provided with bending projections 38 and 62 at the end portions 32e on both sides of the divided body 32, like the pedal arm 60 of FIG. Are bent in through holes 56 formed in the flanges 34f on both sides, and one of the bent protrusions 62 is formed in a crank shape, and the front end portion thereof is superimposed on the back surface of the flange 34f substantially in parallel. The through holes 56 provided in the flanges 34 f on both sides of the divided body 34 are both formed larger than the through holes 56 of the divided body 32, and also serve as a retaining hole on which the bent protrusions 38 and 62 are retained. ing. This embodiment is an embodiment of claims 1 to 4, 6, and 7.

  FIGS. 4 (a) to 4 (c) are diagrams for explaining still another embodiment of the present invention, each of which is a cross-sectional view corresponding to FIG. 1 (c), that is, a portion provided with a hook engaging portion. 2A and 2B, each of which is a case where a concave portion 52 is provided in the divided body 32 and is fitted inside the hat portion of the divided body 34 like the pedal arm 50 of FIG. The pedal arm 80 of (a) is covered with a synthetic resin 82 over the entire circumference of the pair of divided bodies 32, 34, and the other divided body 34 is provided at the intermediate portion in the width direction of the one divided body 34. An intermediate contact portion 84 that protrudes toward the surface and is brought into surface contact is formed by bending or drawing with a press. And in the part in which this intermediate contact part 84 was provided, the through hole 86 including the other division body 32 is provided, and when the synthetic resin 82 is injection-molded, it will be filled in the through hole 86. As a result, the connecting portions 88 that are stretched over the inner wall surfaces of the synthetic resin 82 located on both sides of the pair of divided bodies 32 and 34 are integrally provided. That is, the pedal arm 80 includes not only the terminal portions 32e and the flanges 34f of the pair of divided bodies 32 and 34 that are joined by the synthetic resin 82, but also the fitting of the recess 52 and the connecting portion 88 of the divided bodies 32 and 34. Since the pair of divided bodies 32 and 34 are firmly joined by the synthetic resin 82 even in the intermediate contact portion 84 in which the relative displacement is reliably controlled and the connecting portion 88 is provided, the strength and rigidity are further increased. Further reduction in weight can be achieved by reducing the thickness of the divided members 32 and 34. The connecting portion 88 functions as a hook engaging portion. This embodiment is an embodiment of claims 1, 2, 6, and 8.

  4 (b) is compared with the pedal arm 80 in FIG. 4 (a), like the pedal arm 54 in FIG. 2 (b), the terminal portions on both sides of the pair of divided bodies 32, 34. This is a case where through holes 56 are provided in the flanges 32e and 34f, and the connecting portion 58 is provided integrally with the synthetic resin 82. In this case, the relative displacement of the divided bodies 32 and 34 is more reliably regulated, and the strength and rigidity of the pedal arm 90 are further increased. Therefore, the thickness of the pair of divided bodies 32 and 34 is reduced to further reduce the weight. Can be achieved. This embodiment is an embodiment of claims 1, 2, and 6-8.

  Compared with the pedal arm 90 of FIG. 4B, the pedal arm 92 of FIG. 4C is provided with a burring hole 94 in one divided body 32 instead of the through hole 86, and the other divided body 34. This is a case where the through hole 86 is fitted. In this case, the engagement between the burring hole 94 and the through hole 86 restricts relative displacement in all directions parallel to the overlapping surfaces of the pair of divided bodies 32 and 34, and the connection portion 88 makes the two relative to each other. Accordingly, the strength and rigidity of the pedal arm 92 are further increased, and the thickness of the pair of divided bodies 32 and 34 can be reduced to further reduce the weight. In addition, since the burring hole 94 may be provided and fitted into the through hole 86 of the divided body 34, the configuration is simple and inexpensive. The burring hole 94 functions as a catching engagement part by itself, and corresponds to a protrusion protruding toward the divided body 34 side. As for the through holes 56 provided in the terminal portions 32e and the flanges 34f on both sides of the pair of divided bodies 32, 34, one through hole 56 of the pair of divided bodies 32, 34 is used as a burring hole, and the other through hole 56 is provided. Can be fitted. This embodiment is an embodiment of claims 1, 2, and 5-7.

  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.

  10: Operation pedal for vehicle (hollow pedal) 14, 50, 54, 60, 70, 72, 74, 80, 90, 92: Pedal arm 32, 34: Divided body 32e: Terminal portion (contact portion) 34f: Flange ( 36, 82: Synthetic resin 38, 62: Bending protrusion (protruding part, hook engaging part) 40, 64: Retaining hole 52: Recessed part (protruding part, hook engaging part) 56, 86 : Through hole 58, 88: Connection part (hook engaging part) 84: Intermediate contact part (contact part) 94: Burring hole (protrusion part, hook engagement part) O: Support axis

Claims (8)

The terminal portion is provided with a pair of divided bodies in which the terminal portions are overlapped in parallel so as to form a hollow structure, and the terminal is provided by a synthetic resin provided so as to cover the outside of the terminal portion so as to straddle the U-shape. In a hollow pedal that has a pedal arm that is integrally joined to a part, and that is rotatably disposed around a predetermined support axis,
A hollow pedal comprising a hook engaging portion that is provided in a direction intersecting with the overlapping surface of the terminal portion and restricts relative displacement of the pair of divided bodies in a direction parallel to the overlapping surface. . The hook engaging portion is a protruding portion provided so as to protrude from one of the pair of divided bodies toward the other, and is engaged with the other divided body. The hollow pedal according to 1. The protrusion is a bent protrusion that is bent from the terminal portion of the one divided body toward the other divided body,
The hollow pedal according to claim 2, wherein the bent protrusion is inserted into a latch hole provided in the other divided body. The folding protrusion is bent so that a cross section forms a crank shape, and the crank-shaped tip portion that passes through the locking hole is inserted into the locking hole, and is an end of the other divided body. The hollow pedal according to claim 3, wherein the hollow pedal is overlapped in parallel with the portion. The hollow pedal according to claim 2, wherein the protruding portion is a burring hole protruding toward the other divided body and is fitted in a through hole provided in the other divided body. In the close contact portion where the pair of divided bodies are overlapped with each other, a through hole is provided so as to penetrate the pair of divided bodies,
The hook engaging portion is formed by filling the through hole with the synthetic resin when the pair of divided bodies are covered with the synthetic resin, and integrally hanging on the inner wall surfaces of the synthetic resin located on both sides of the contact portion. The hollow pedal according to claim 1, wherein the hollow pedal is passed. The contact portion is a terminal portion of the pair of divided bodies, and the through hole is provided so as to penetrate the terminal portion,
The hollow pedal according to claim 6, wherein the connection portion is integrally stretched over an inner wall surface of the U-shaped synthetic resin that covers the outside of the terminal portion. The close contact portion is an intermediate close contact portion that is superposed on the intermediate portion other than the terminal portions of the pair of divided bodies so as to be in surface contact with each other, and the through hole is provided so as to penetrate the intermediate close contact portion.
The synthetic resin is provided so as to cover the entire circumference of the pair of divided bodies including the intermediate contact portion, and spans the inner wall surface of the synthetic resin located on both sides of the intermediate contact portion. The hollow pedal according to claim 6, wherein the connecting portion is integrally provided.

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