JP2020112964A - Hollow pedal and manufacturing method thereof - Google Patents

Abstract

To suppress the size of a cross-sectional shape of a pedal after securing strength as a pedal by forming a closed cross section structure without providing a flange part in a hollow pedal.SOLUTION: A hollow pedal formed by combining a pair of U-shaped cross-sectional split bodies 10L, 10R to be framework members by facing respective open sides to be a closed cross-sectional structure, and covering the outer periphery of the closed cross-sectional structure with a resin outer skin 4 so as to maintain the closed cross-sectional structure is provided with resin abutment parts 20L, 20R formed by covering abutment edge parts 11L, 11R of the respective split bodies 10L, 10R abutted on each other in the closed cross-sectional structure with resin. The respective resin abutment parts 20L, 20R form fitting structures 30 for inhibiting resin from flowing from outer sides to inner sides of the closed cross-sectional structures during being molded by being abutted on each other.SELECTED DRAWING: Figure 8

Description

The present invention relates to a hollow pedal used for operating a vehicle and a method for manufacturing the hollow pedal.

A hollow pedal having a closed cross-section structure has been developed by stacking two plate materials in a face-to-face direction and joining a flange portion, which is an outer edge, with a space interposed therebetween (see Patent Document 1). .. In this case, the flange portion is joined by covering the joint portion with resin.

JP, 2012-35755, A

However, in the above-mentioned conventional technology, since the flange portion is provided, if the closed cross-section structure required to secure the strength as the pedal is secured, the cross-sectional shape of the pedal becomes the closed cross-section structure + the flange portion, and the cross-sectional shape becomes large. There is a problem.

An object of the present invention is to suppress the size of the cross-sectional shape of the pedal while ensuring the strength of the pedal by forming a closed cross-section structure without providing a flange portion in the hollow pedal.

A first aspect of the present invention is a hollow pedal that is formed in a long shape by covering an outer surface of a skeleton member having a hollow structure with a resin outer cover, and the skeleton member has a cross section in a direction intersecting with a longitudinal direction. A pair of divided bodies having a U-shaped cross-section has a closed cross-section structure formed by combining the open sides so as to face each other. The contact edge portion is provided with a resin abutting portion formed by covering the resin, and the resin abutting portions are abutted against each other so that the resin abutting portions are directed from the outside to the inside of the closed cross-section structure. A closed structure is formed to prevent the resin from flowing during molding of the resin outer cover.

In the first invention, the divided body may be made of a fiber reinforced resin in addition to the steel plate. As the closed structure, various structures may be adopted as long as the path through which the resin flows at the time of molding is bent, and as a result, the path length is extended compared to the case where it is not bent.

2nd invention of this invention is a said 1st invention, In the said division|segmentation body, the through-hole which penetrates the inside and outside of the said closed cross-section structure is formed, The resin of the said resin contact part has the said through-hole. It is provided along the inner wall surface of the divided body inside the closed cross-section structure in a state of being engaged with the hole edge portion of the formed divided body and the contact edge portion of the divided body.

In a third aspect of the present invention based on the second aspect, the resin of the resin contact portion has an inner wall surface of the divided body that is an inner side of the closed cross-section structure, and the divided portion that is an outer side of the closed cross-section structure. Via the surface of the outer wall surface of the body, the contact end edge side of the divided body is annularly surrounded from the through hole.

4th invention of this invention is any one of said 1st-3rd invention, Comprising: The reinforcement rib is provided on the inner wall surface of the said division body used as the inner side of the said closed cross-section structure, This reinforcement rib is the said closed cross-section structure. In order to suppress the deformation of the divided body which causes the collapse of the cross section of the divided body, the adjacent resin contact portions of one divided body are integrally connected.

5th invention of this invention is an end part of the said division body corresponding to the operation surface at the time of pedal operation in any one of said 1st-4th invention, Comprising: It is formed in the state which has the said closed cross-section structure. The opening is provided with a lid which is integrally formed of the resin of the resin contact portion and closes the opening.

In a sixth aspect of the present invention based on the fifth aspect, the pedal seat, which is an operation surface for pedal operation, is formed on the front surface side of the lid by the resin of the resin outer cover.

A seventh invention of the present invention is the resin manufacturing method according to any one of the first to sixth inventions, wherein the respective facing surfaces of the respective divided bodies are provided with facing holes penetrating them so as to face each other in front of each other. A tubular body is formed integrally with the resin of the contact portion, and one end portion of a tubular shape is provided along the hole edge portion of each divided body in which each of the facing holes is formed, and the other of the tubular bodies is provided. End portions of the resin are abutted to each other inside the closed cross-section structure, and the closed structure is formed in the contact portion, and the resin of the resin outer shell is formed in the hollow portion of each of the cylinders. Are filled to form a support column.

In an eighth aspect of the present invention based on any one of the first to seventh aspects of the invention, the closing structure is configured by a fitting structure in which the resin contact portions of each of the split bodies are fitted to each other in the facing direction. ing.

A ninth aspect of the present invention is a method for manufacturing a hollow pedal, in which the outer surface of a skeleton member having a hollow structure is covered with a resin outer cover to form a long length, and the skeleton member intersects in the longitudinal direction. The first step of preparing a pair of divided bodies having a U-shaped cross-section in the direction is combined with the divided sides of the divided bodies so as to face each other to form a closed cross-sectional structure. A second step of performing resin insert molding using the divided body having a sectional structure as an insert material, and covering the outer periphery of the closed sectional structure of the divided body with a resin outer cover so that the divided body maintains a closed sectional structure. And in the second step, a resin-made abutting portion is formed by covering each abutting edge portion of the abutment body that is abutted against each other when the divided body has a closed cross-section structure with a resin, The resin contact portion has a closed structure that suppresses the inflow of resin during the molding in the second step from the outside to the inside of the closed cross-section structure.

According to the present invention, since the closed cross-section structure is configured by the divided body having the U-shaped cross-section, it is possible to configure the closed cross-section structure without providing the flange portion, and while ensuring the strength as the pedal, the cross-section of the pedal. The size of the shape can be suppressed. Further, the closed structure of the resin contact portion can prevent the resin of the resin outer cover from entering the inside of the closed cross section structure when the outer periphery of the closed cross section structure is covered with the resin outer cover.

It is a perspective view showing a hollow pedal as a 1st embodiment of the present invention. It is a front view of the said hollow pedal. It is a perspective view of a pair of division bodies which are frame members of the above-mentioned hollow pedal. It is a perspective view of a state where a resin contact portion is provided on the pair of divided bodies. It is a perspective view of a state where the above-mentioned pair of divided bodies were combined to form a closed cross-section structure. It is a VI-VI sectional view taken on the line in FIG. 2, and shows only one of a pair of division bodies. It is a VII-VII sectional view taken on the line in FIG. 2, and shows only one of a pair of division bodies. It is the VIII-VIII sectional view taken on the line in FIG. FIG. 3 is a sectional view taken along line IX-IX of FIG. 2. FIG. 3 is a sectional view taken along line XX of FIG. 2. FIG. 3 is a sectional view taken along line XI-XI of FIG. 2. It is the XII-XII sectional view taken on the line in FIG. It is sectional drawing corresponding to FIG. 8 of 2nd Embodiment of this invention. It is a front view corresponding to FIG. 2 of 3rd Embodiment of this invention. It is the XV-XV sectional view taken on the line in FIG. of FIG. It is a XVI-XVI sectional view taken on the line in FIG. of FIG. It is the XVII-XVII sectional view taken on the line in FIG. of FIG. It is the XVIII-XVIII sectional view taken on the line in FIG. of FIG.

1 and 2 show a hollow pedal 1 as a first embodiment of the present invention. The first embodiment is an example in which the present invention is applied to a vehicle brake pedal. The hollow pedal 1 has a boss 3 fitted and fixed at one end, and is swingably coupled to a pedal bracket (not shown) on the vehicle body side by a bolt or the like inserted through the boss 3. At the other end of the hollow pedal 1, there is formed a pedal seat 2 which forms an operation surface for pedal operation. A clevis pin (not shown) of a clevis joint (not shown) connected to a brake operating push rod (not shown) is rotatably provided at a position slightly closer to the boss 3 than an intermediate position between the boss 3 and the pedal seat 2. The bearing portion 24L (, 24R) to be inserted is formed.

3 to 5 show a manufacturing process of the hollow pedal 1 according to the first embodiment. FIG. 3 shows a pair of divided bodies 10L and 10R having a U-shaped cross section, which are skeleton members of the hollow pedal 1. The divided bodies 10L and 10R are shaped so as to have a closed cross-sectional structure by combining the divided bodies with their open sides facing each other. The step of preparing such divided bodies 10L, 10R corresponds to the first step of the present invention. Each of the divided bodies 10L and 10R is formed of a steel plate or a prepreg of carbon fiber reinforced resin (CFRP) or glass fiber reinforced resin (GFRP). In the following description, in each of the divided bodies 10L and 10R, the inner side in the closed cross-section structure is referred to as the inner side, and the outer side is referred to as the outer side.

As shown in FIGS. 3 and 4, resin contact portions 20L and 20R are integrally provided by insert molding on the contact edge portions 11L and 11R of the divided bodies 10L and 10R, respectively. Thereafter, as shown in FIG. 5, the resin contact portions 20L and 20R of the respective divided bodies 10L and 10R are brought into contact with each other to form a closed cross-section structure having a space between the facing surfaces of the respective divided bodies 10L and 10R. To be done.

In this way, in a state in which the divided bodies 10L, 10R are combined to form a closed cross-section structure, insert molding is performed using the divided bodies 10L, 10R as insert materials, and the divided bodies 10L, 10R are formed as shown in FIG. A resin outer cover 4 is formed by surrounding the outer periphery with a resin. Each of the divided bodies 10L and 10R is maintained in a closed cross-section structure by the resin outer cover 4. The step of covering the divided bodies 10L and 10R having the closed cross-section structure with the resin outer cover 4 corresponds to the second step of the present invention. In order to bring the resin contact portions 20L, 20R and the resin outer skin 4 into close contact with the surface of each of the divided bodies 10L, 10R, a surface treatment that makes the surface of each of the divided bodies 10L, 10R a rough surface is performed in a step before insert molding. It can be carried out. The resin of the resin contact portions 20L and 20R and the resin outer cover 4 is, for example, PPS (polyphenylene sulfide), PBT (polybutylene terephthalate), polyamide (PA), polypropylene (PP), or a fiber-reinforced composite material thereof. For example, various synthetic resin materials having relatively high rigidity can be used.

As shown in FIG. 3, through holes 13L and 13R through which the boss 3 is inserted are formed in the respective divided bodies 10L and 10R. Further, at positions close to the through holes 13L and 13R, positions corresponding to the pedal seat 2, and intermediate positions sandwiched by the positions corresponding to the through holes 13L and 13R and the pedal seat 2, from the through holes 13L and 13R. A plurality of small-diameter through holes 14L and 14R are formed. A large number of through holes 14L, 14R are formed at an intermediate position sandwiched between the positions closer to the through holes 13L, 13R and the position corresponding to the pedal seat 2. Specifically, while two pairs of through holes 14L and 14R are formed at the positions close to the through holes 13L and 13R and the position corresponding to the pedal seat 2, the intermediate portion sandwiched between them is formed. Nine sets of through holes 14L and 14R are formed at the positions.

6 and 7 show a state in which the resin contact portion 20L is formed by insert molding on the one divided body 10L as shown in FIG. FIG. 6 is a sectional view taken along the line VI-VI of FIG. 2, and a resin contact portion 20L is integrally formed with the contact end edge portion 11L of the split body 10L. The resin contact portion 20L is a recess 31L that can be fitted into the resin contact portion 20R of the split body 10R that is in contact therewith. Further, the resin contact portion 20L adjacent to the through hole 14L is formed so that the resin at the time of insert molding embeds the through hole 14L from the inside of the divided body 10L. Therefore, the resin extending from the resin contact portion 20L to the through hole 14L forms the extended portion 22L, and the resin of the extended portion 22L is in a state of being engaged with the hole edge portion 14La of the through hole 14L. There is. On the other hand, since the resin of the resin contact portion 20L is also engaged with the contact edge portion 11L of the divided body 10L, the resin contact portion 20L is mechanically and firmly coupled to the divided body 10L. There is.

Further, FIG. 7 is a sectional view taken along the line VII-VII of FIG. 2, and a resin contact portion 20L is integrally formed with the contact end edge portion 11L of the divided body 10L as in FIG. There is. The resin contact portion 20L adjacent to the through hole 14L is formed so that the resin at the time of insert molding fills the through hole 14L and covers both inner and outer side surfaces of the contact end edge portion 11L of the split body 10L. Therefore, the divided body 10L closer to the contact edge 11L than the through hole 14L is covered with the resin annular portion 23L. Therefore, the resin contact portion 20L is mechanically and firmly coupled to the divided body 10L by the annular portion 23L.

Further, the bearing portion 24L is formed integrally with the resin contact portion 20L, and the divided body 10L closer to the contact edge 11L than the through hole 15L corresponding to the bearing portion 24L is formed by the resin annular portion 23L. Is covered. Therefore, the resin contact portion 20L is mechanically and firmly coupled to the divided body 10L by the annular portion 23L. The bearing portion 24L is formed in a cylindrical shape along the hole edge portion 15La of the through hole 15L. The annular portion 23L is fixedly provided on the surface of the bearing portion 24L on the push rod side and a plurality (here, three) are provided. Therefore, the strength of the bearing portion 24L on the push rod side is increased. In addition, although the divided body 10L is shown in FIGS. 6 and 7, the divided body 10R is also configured substantially symmetrically with the divided body 10L, and in the drawings, in the divided body 10R, constituent members corresponding to the divided body 10L are not shown. , The corresponding code “L” is given instead of “R”.

FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. 2, showing a state in which the pair of divided bodies 10L and 10R are abutted by the resin abutting portions 20L and 20R to form a closed sectional structure. It is shown by the part corresponding to. At this time, in the resin contact portions 20L and 20R, the convex portion 31R is fitted and coupled to the concave portion 31L. Then, the outer surface of the pair of divided bodies 10L, 10R is covered with the resin outer cover 4, and the resin outer cover 4 covers the outer periphery of the closed cross-section structure. When the resin outer cover 4 is covered by insert molding on the outer surfaces of the pair of divided bodies 10L and 10R, the resin contact portions 20L and 20R have the convex portions 31R fitted into the concave portions 31L, and the inside of the closed cross-section structure from the outside. The resin is prevented from flowing into. At this time, the fitting structure (corresponding to the closing structure of the present invention) 30 is constituted by the concave portion 31L and the convex portion 31R.

FIG. 9 is a sectional view taken along the line IX-IX in FIG. 2, and shows a state in which the divided bodies 10L, 10R are abutted by the resin abutting portions 20L, 20R to form a closed sectional structure, and correspond to FIG. 7. It is shown in the part to do. Here, similarly to the case described with reference to FIG. 8, the outer surface of the pair of divided bodies 10L and 10R having the closed cross-section structure is covered with the resin outer cover 4. In this state, the bearing portions 24L and 24R are arranged to face each other, and a clevis pin (not shown) can be inserted into both bearing portions 24L and 24R.

FIG. 10 is a cross-sectional view taken along the line XX of FIG. 2, and shows a state where the divided bodies 10L and 10R are abutted by the resin abutting portions 20L and 20R to form a closed sectional structure. At this portion, reinforcing ribs 25L and 25R are formed on the inner wall surfaces of the pair of divided bodies 10L and 10R. The reinforcing ribs 25L and 25R are integrally formed with the adjacent resin contact portions 20L of the respective divided bodies 10L and 10R, and with the resin contact portions 20R. Therefore, the reinforcing ribs 25L and 25R can be reinforced so that the divided bodies 10L and 10R are not deformed to cause the collapse of the closed cross-section structure.

FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG. 2 and shows a state in which the divided bodies 10L and 10R are abutted by the resin abutting portions 20L and 20R to form a closed sectional structure. In this state, the through hole 13L of the divided body 10L and the through hole 13R of the divided body 10R are in a position facing each other, and the boss 3 is inserted into both through holes 13L and 13R. A plurality of (eight in this case) coupling portions 41L and 41R are dispersedly and integrally provided on the outer periphery of the boss 3 at a portion projecting to both outer sides of each of the divided bodies 10L and 10R. .. The connecting portions 41L and 41R are integrally formed with the resin outer cover 4, and the resin outer cover 4 fixes the boss 3 via the connecting portions 41L and 41R.

FIG. 12 is a sectional view taken along the line XII-XII in FIG. 2, showing a state where the divided bodies 10L and 10R are abutted by the resin abutting portions 20L and 20R to form a closed sectional structure. At this portion, each of the divided bodies 10L and 10R has openings 12L and 12R formed on the tread surface 2a side of the pedal seat 2 as shown in FIGS. 3 and 12, and the openings 12L and 12R are shown in FIGS. As shown in FIG. 12, it is closed by lids 21L and 21R integrated with the resin contact portions 20L and 20R. The abutting portion between the lid 21L and the lid 21R is also the fitting structure 30. Therefore, when the pedal seat 2 is molded on the front surface side of the lids 21L and 21R at the same time when the resin outer cover 4 is molded, the resin forming the pedal seat 2 does not flow into the inside of the closed cross-section structure of the split bodies 10L and 10R. Is being done. If the lid 21L and the lid 21R are not provided, in order to prevent the resin of the resin outer cover 4 from flowing into the closed cross-section structure, a special die such as a slide core or a nest is required at the time of insert molding. The functions of those molds can be replaced by the lid 21L and the lid 21R. The pedal seat 2 may cover the tread surface 2a with a rubber cover (not shown).

According to the first embodiment described above, since the divided bodies 10L, 10R having a U-shaped cross section have the closed cross-section structure via the resin contact portions 20L, 20R, the contact edge portion 11L without the flange portion, 11R can be brought into contact to form a closed cross-section structure. As a result, the size of the cross-sectional shape of the pedal can be suppressed while ensuring the strength as the pedal. Further, by configuring the fitting structure 30 between the resin contact portions 20L and 20R, when the outer periphery of the closed cross-section structure is covered with the resin outer cover 4, the resin of the resin outer cover 4 is placed inside the closed cross-section structure. It is possible to suppress entry.

FIG. 13 shows a second embodiment of the present invention. The feature of the second embodiment over the first embodiment is that the fitting structure 30 is changed. The other configurations are the same as those in the first embodiment in the second embodiment, and the repeated description of the same parts will be omitted.

FIG. 13 corresponds to FIG. 8, in which the fitting structure (corresponding to the closing structure of the present invention) 30 is such that the convex portion 32R having a chevron cross section is fitted in the concave portion 32L having a V-shaped trough cross section. It is configured to do. Also in this fitting structure 30, when the resin outer cover 4 is covered by insert molding on the outer surfaces of the pair of split bodies 10L, 10R, the resin contact portions 20L, 20R have the recesses 32L fitted with the projections 32R. Resin is prevented from flowing from the outside to the inside of the closed cross-section structure.

14 to 18 show a third embodiment of the present invention. The feature of the third embodiment over the first embodiment is that the columns 26L and 26R are provided in the closed cross-section structure. The rest of the configuration is the same as that of the first embodiment in the third embodiment, and repeated description of the same parts will be omitted. However, the third embodiment is slightly different from the first embodiment in that the shape and structure are slightly changed, including the arrangement of the through holes 14L and 14R. For example, in the third embodiment, 20 sets of through holes 14L and 14R are provided.

In the third embodiment, as shown in FIGS. 15, 17, and 18, the extension portions 27L and 27R are integrally provided on the entire inner wall surfaces of the divided bodies 10L and 10R by the resin that is integral with the resin contact portions 20L and 20R. ing. The extended portions 27L and 27R make it more reliable to integrate the resin contact portions 20L and 20R with the divided bodies 10L and 10R.

In the third embodiment, as shown in FIG. 15, in the state where the divided bodies 10L and 10R are fitted to each other, opposed holes 16L and 16R are formed in the opposed surfaces of the divided bodies 10L and 10R so as to face each other in the front. There is. At the hole edge portions 16La and 16Ra of the facing holes 16L and 16R, cylindrical bodies 26L and 26R are formed of resin that is integral with the resin contact portions 20L and 20R, respectively. A fitting structure 30 similar to the resin contact portions 20L and 20R is formed on the contact portions of the respective cylinders 26L and 26R. Each of the tubular bodies 26L and 26R is in a state of being in contact with each other and has a single cylindrical shape, and the inside of the cylindrical body is filled with a penetrating portion 42 with a resin integral with the resin outer cover 4. .. Therefore, between the opposing holes 16L and 16R, there is a column that supports the divided bodies 10L and 10R, which are fitted to each other, by the cylindrical bodies 26L and 26R and the penetrating portion 42 so as not to be crushed by the pressure from the outer peripheral side. Has been formed. Further, since the penetrating portion 42 is formed of the resin integral with the resin outer cover 4, the joint strength of the divided bodies 10L, 10R can be increased.

In the third embodiment, as shown in FIGS. 14 and 16, the bearing portions 24L and 24R are integrated with the resin contact portions 20L and 20R in the hole end edge portions 15La and 15Ra of the through holes 15L and 15R of the split bodies 10L and 10R. The resin is formed into a cylindrical shape. Although the structure is different from that of the bearing portions 24L and 24R of the first embodiment, the functions of the bearing portions 24L and 24R are the same.

In the third embodiment, as shown in FIGS. 14, 16 and 17, reinforcing ribs 28L and 28R are integrally provided at appropriate portions on the inner wall surfaces of the divided bodies 10L and 10R by a resin integral with the resin contact portions 20L and 20R. Has been. Specifically, the reinforcing ribs 28L, 28R are provided at positions that connect the opposing resin contact portions 20L, 20R of the divided bodies 10L, 10R on one side with a straight line and pass through the opposing holes 16L, 16R. , And the bearings 24L and 24R. As a result, the reinforcing ribs 28L and 28R increase the strength of the divided bodies 10L and 10R against deformation. In particular, as shown in FIG. 16, since the reinforcing ribs 28L and 28R are integrated with the cylindrical bodies 26L and 26R that form the support columns, the reinforcing effect is further enhanced. Further, as shown in FIGS. 14 and 16, since the bearing portions 24L and 24R are provided at the positions where the two reinforcing ribs 28L and 28R intersect, the strength of the bearing portions 24L and 24R can be increased.

The specific embodiments have been described above, but the present invention is not limited to their appearance and configuration, and various changes, additions, and deletions are possible. For example, the hollow pedal 1 may be applied to a vehicle operation pedal such as a clutch pedal or a foot-operated parking brake pedal, in addition to the above-mentioned brake pedal. Further, in each of the embodiments, the portion of the hollow pedal 1 other than the pedal seat 2 is configured to be covered with the resin outer cover 4, but the region covered with the resin outer cover 4 is made hollow for the purpose of weight reduction or design. May be only a part of.

Finally, the operational effects of the above-described embodiments corresponding to the second and subsequent inventions in the above-mentioned "means for solving the problem" will be additionally described.

According to the second invention, since the resin of the resin contact portion is provided in a state of being engaged with the hole edge portion of the through hole and the contact edge portion of the divided body, the resin contact with the divided body is performed. The bond strength of the contact portion can be increased.

According to the third invention, since the resin of the resin contact portion surrounds a part of the divided body in a ring shape, it is possible to further increase the bonding strength of the resin contact portion to the divided body.

According to the fourth invention, since the reinforcing rib is provided on the inner wall surface of the divided body, it is possible to enhance the strength against the collapse of the cross-section of the closed cross-section structure.

According to the fifth aspect, since the opening in the closed cross-section structure is closed by the lid, when the outer circumference of the closed cross-section structure is covered with the resin outer cover, the resin of the resin outer cover does not enter the closed cross-section structure through the opening. Can be In addition, the lid can be used to replace a mold such as a slide core, which is originally required to prevent the resin of the resin outer cover from entering the closed cross-section structure.

According to the sixth aspect, the pedal seat is formed on the surface of the lid that closes the opening in the closed cross-section structure, so that the pedal seat can be formed using the lid.

According to the seventh aspect of the invention, since the support pillar is provided in the closed cross-section structure, it is possible to prevent the divided body forming the closed cross-section structure from being crushed and deformed by the molding pressure when forming the resin outer cover. Further, since the pillar portion is filled with the resin of the resin outer cover, the joint strength of the pair of divided bodies forming the closed cross-section structure can be increased.

According to the eighth aspect of the invention, since the fitting structure is adopted as the closing structure, the fitting structure prevents the resin of the resin outer shell from entering the inside of the closed cross-section structure, and also utilizes the fitting structure. By fitting the divided bodies, it is possible to improve workability when the divided bodies are brought into contact with each other to form a closed cross-section structure.

According to the ninth invention, since the closed cross-section structure is configured by the divided body having the U-shaped cross section, the closed cross-section structure can be configured without the flange portion, and the strength as the pedal is ensured. The size of the cross-sectional shape of the pedal can be suppressed. Further, the closed structure of the resin contact portion can prevent the resin of the resin outer cover from entering inside the closed cross section structure when the outer periphery of the closed cross section structure is covered with the resin outer cover.

1 Hollow Pedal 2 Pedal Seat 2a Tread 3 Boss 4 Resin Outer Skin 10L, 10R Divided Body 11L, 11R Abutment Edge 12L, 12R Opening 13L, 13R, 14L, 14R, 15L, 15R Through Hole 14La, 15La, 15Ra Hole End edge portion 16L, 16R Counter hole 16La, 16Ra Hole end edge portion 20L, 20R Resin contact portion 21L, 21R Lid 22L, 22R, 27L, 27R Extension portion 23L Annular portion 24L, 24R Bearing portion 25L, 25R, 28L , 28R Reinforcing ribs 26L, 26R Cylindrical body (support)
30 Fitting structure (closed structure)
31L, 32L concave portion 31R, 32R convex portion 41L, 41R coupling portion 42 penetrating portion (support)

Claims (9)

A hollow pedal formed in a long shape by covering the outer surface of a skeleton member having a hollow structure with a resin outer cover,
The skeleton member has a closed cross-section structure formed by combining a pair of divided bodies whose cross-sectional shape in the direction intersecting the longitudinal direction is a U-shaped cross section with their open sides facing each other.
A resin contact portion formed by covering a contact end edge portion of each of the divided bodies that are in contact with each other in the closed cross-section structure,
Each of the resin contact portions is formed with a closed structure that prevents the resin from flowing from the outside to the inside of the closed cross-section structure when the resin outer cover is molded by contacting each other. A hollow pedal. In claim 1,
The divided body is formed with a through hole that penetrates the inside and outside of the closed cross-section structure,
The resin of the resin contact portion is inside the closed cross-section structure in a state of being engaged with the hole edge portion of the divided body having the through hole and the contact edge portion of the divided body. Hollow pedal provided along the inner wall surface of the split body. In claim 2,
The resin of the resin contact portion passes through the surfaces of the inner wall surface of the divided body, which is the inner side of the closed cross-section structure, and the outer wall surface of the divided body, which is the outer side of the closed cross-section structure, to form the divided body. A hollow pedal that annularly surrounds the contact end edge side with respect to the through hole. In any one of Claims 1-3,
A reinforcing rib is provided on the inner wall surface of the divided body which is the inside of the closed cross-section structure,
The reinforcing ribs integrally connect the resin contact portions adjacent to each other of the one divided body so as to suppress the deformation of the divided body which causes the collapse of the closed cross-section structure. Hollow pedal. In any one of Claims 1-4,
It is an end portion of the divided body corresponding to the operation surface at the time of pedal operation, and is integrally formed by the resin of the resin abutting portion in the opening formed in the closed cross-section structure, and the opening is formed. Hollow pedal with a closing lid. In claim 5,
A hollow pedal in which a pedal seat forming an operation surface at the time of pedal operation is formed on the front surface side of the lid by the resin of the resin outer cover. In any one of Claims 1-6,
On the surfaces facing each other of each of the divided bodies, facing holes are provided so as to face each other in front of each other,
Integrally formed by the resin of the resin abutting portion, each of the divided body forming each of the facing holes is provided with a tubular body along one end of the tubular shape along the hole edge portion of the divided body,
The other end of each of the tubular bodies abuts each other inside the closed cross-section structure, and the abutment portion is formed with the closed structure,
A hollow pedal in which a column is formed by filling the resin of the resin outer cover in the hollow portion of each of the cylinders. In any one of Claims 1-7,
The said closed structure is a hollow pedal which is comprised by the fitting structure which fits the resin-made contact parts of each said division body mutually in the said opposing direction. A method of manufacturing a hollow pedal, which is formed long by covering the outer surface of a skeleton member having a hollow structure with a resin outer cover,
A first step of preparing, as the skeleton member, a pair of divided bodies having a U-shaped cross-section in a direction intersecting the longitudinal direction;
A closed cross-sectional structure is formed by combining the open sides of the divided bodies so as to face each other, and the divided body having the closed cross-sectional structure is used as an insert material to perform insert molding of resin, and the divided body is A second step of covering the outer periphery of the closed cross-section structure of the divided body with a resin outer cover so as to maintain the closed cross-section structure;
In the second step, a resin contact portion is formed by covering each contact edge portion of the divided bodies, which is in contact with each other when the divided body has a closed cross-section structure, with a resin contact portion. The method for manufacturing a hollow pedal, wherein the abutting portion has a closed structure that suppresses the inflow of the resin during the molding in the second step from the outside to the inside of the closed cross-section structure.

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