WO2021186900A1 - Vehicle having step - Google Patents

Vehicle having step Download PDF

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Publication number
WO2021186900A1
WO2021186900A1 PCT/JP2021/002570 JP2021002570W WO2021186900A1 WO 2021186900 A1 WO2021186900 A1 WO 2021186900A1 JP 2021002570 W JP2021002570 W JP 2021002570W WO 2021186900 A1 WO2021186900 A1 WO 2021186900A1
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WO
WIPO (PCT)
Prior art keywords
door
side gear
gear
vehicle
arc
Prior art date
Application number
PCT/JP2021/002570
Other languages
French (fr)
Japanese (ja)
Inventor
豪郎 門田
佑斗 馬場
菜穂子 坂元
Original Assignee
トヨタ車体株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by トヨタ車体株式会社 filed Critical トヨタ車体株式会社
Publication of WO2021186900A1 publication Critical patent/WO2021186900A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/04—Doors arranged at the vehicle sides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R3/00—Arrangements of steps or ladders facilitating access to or on the vehicle, e.g. running-boards

Definitions

  • the present disclosure relates to a vehicle with a step including a door that opens and closes a door opening of a vehicle body by horizontally rotating, and a step plate that can be horizontally moved in and out under the door opening.
  • the vehicle with steps in the document is provided with a fan-shaped step plate 102, and one side corresponding to the fan-shaped radius of the step plate 102 is attached to the lower end edge of the door 100. Further, on the underfloor side of the vehicle body 103, an arc-shaped guide rail (not shown) is provided to guide a portion of the step plate 102 corresponding to the fan-shaped arc. As a result, by rotating the door 100 in the opening direction, the step plate 102 can be automatically pulled out (protruded) from under the vehicle body 103.
  • step plate 102 described above is attached to the door 100, it is necessary to increase the size of the step plate 102 to a size equal to the flat area required to rotate the door 100 between the fully closed position and the fully open position. There is. Further, as the size of the step plate 102 increases, it is necessary to take a large storage space for the step plate 102.
  • the first side surface of the present disclosure is a vehicle with a step including a door that opens and closes a door opening of a vehicle body by horizontally rotating, and a step plate that can be horizontally moved in and out under the door opening.
  • the door is provided with a conversion device that converts the rotational power of the door into the force of taking in and out of the step plate, and the conversion device projects the step plate by rotating the door to a predetermined angle smaller than the fully open angle. It is configured to maximize the amount.
  • the conversion device is configured so that the protrusion amount of the step plate can be maximized by rotating the door to a predetermined angle smaller than the fully open angle. That is, while the door rotates from a predetermined angle to a fully open angle, the step plate is held in the maximum protruding state (deployed state). Therefore, the size of the step plate can be determined regardless of the flat area required to rotate the door between the fully closed position and the fully open position. Therefore, the size of the step board can be set to the size required for getting on and off. In addition, the storage space for the step plate can be made compact.
  • the conversion device is provided on the vehicle body, the door side gear, the door side link for transmitting the rotational power of the door to the door side gear, and the door provided on the vehicle body. It is provided with a step side gear that meshes with the side gear and transmits the rotational force of the door side gear to the step plate.
  • the conversion device is provided on the step side link that rotates together with the step side gear and the step plate, and has a linear shape that guides the free rotation end side of the step side link.
  • a rail is provided, and the rotation of the step-side link causes the free-rotating end side of the step-side link to move along the rail while performing an arc motion, so that the rail and the step plate are brought together by a vehicle. It is a configuration that can be moved in the width direction. That is, by the action of the step side link and the rail, the rotational force of the step side gear can be converted into the loading / unloading force of the step plate.
  • the rail is continuously provided with a straight portion and an arc portion that overlaps the movement locus on the free rotation end side of the step side link.
  • the free-rotating end side of the step-side link moves along the straight portion of the rail, so that the step plate can move in the vehicle width direction.
  • the free rotation end side of the step side link moves along the arc portion of the rail, so that the movement of the step plate is stopped and held at that position.
  • the door side gear and the step side gear are configured so that the gears are disengaged when the door rotates beyond a predetermined angle. Therefore, when the door rotates beyond a predetermined angle, the rotational power of the door is not transmitted to the step plate side, and the movement of the step plate is stopped.
  • the door side gear is provided with a gear portion on which teeth are formed, an arc portion on which an arc-shaped outer peripheral surface is formed, and between the gear portion and the arc portion.
  • the step side gear is provided with a gear portion on which teeth are formed, an arc portion on which an arc-shaped outer peripheral surface is formed, and between the gear portion and the arc portion. In a state where the door rotates beyond a predetermined angle and the gear portion of the door side gear and the gear portion of the step side gear are disengaged, the step side gear is provided.
  • the tip of the protrusion is always in contact with the arc portion of the door side gear, and in the process of closing the door from the fully open angle to a predetermined angle, the protrusion of the door side gear that receives the rotational power of the door By pressing the protrusion of the step-side gear, the gear portion of the step-side gear starts meshing with the gear portion of the door-side gear.
  • the door side gear includes a gear portion on which teeth are formed and an arc portion on which an arc-shaped outer peripheral surface is formed, and the step side gear has teeth.
  • a gear portion having a In a state where the gear portion of the door side gear and the gear portion of the step side gear are disengaged, the tip of the protrusion of the step side gear is always with respect to the arc portion of the door side gear. There is point contact in the circumferential direction. Therefore, the sliding resistance between the arc portion of the door side gear and the protrusion of the step side gear when the door side gear is rotated (the step gear is stopped) can be reduced. As a result, even if foreign matter or the like enters between the arc portion of the door side gear and the protrusion portion of the step side gear, it is possible to prevent malfunction due to an increase in sliding resistance.
  • the rotational force of the door side gear is transmitted to the step side gear in the process of closing the door from the fully open angle to a predetermined angle.
  • a cam mechanism is provided that rotates the gear portion of the step-side gear to a position where it meshes with the gear portion of the door-side gear. Therefore, by closing the door from the fully open angle to a predetermined angle, the gear portion of the door side gear and the gear portion of the step side gear can be smoothly meshed.
  • FIG. 5 is a schematic perspective view of a door opening of a vehicle with a step according to the first embodiment of the present disclosure as viewed from the indoor side. It is a vertical cross-sectional view (II-II arrow cross-sectional view of FIG. 5) which shows the lower part of the floor of the vehicle. It is a vertical cross-sectional view (III-III arrow cross-sectional view of FIG. 5) showing the lower part of the floor of the vehicle. It is a vertical cross-sectional view (IV-IV arrow cross-sectional view of FIG. 5) showing the lower part of the floor of the vehicle. It is an overall plan view (door closed, step plate retracted state) which shows the door, a conversion device, and a step plate.
  • FIG. 20 It is an enlarged view of XVII arrow view of FIG. It is a perspective view which looked at the door side gear, the step side gear, and the cam mechanism of the conversion device in the vehicle with a step which concerns on Embodiment 3 of this invention from the bottom. It is a top view of the door side gear, the step side gear, and the cam mechanism of the conversion device. It is a top view which shows the contact state between the trapezoidal protrusion of the step side gear, and the arc part of a door side gear. It is a top view which shows the meshing state of the door side gear and the step side gear of a conversion device when a door is closed and a step plate is retracted. It is an enlarged view of the gear meshing portion in FIG. 20.
  • FIG. 24 is an enlarged view of the arc portion of the door side gear, the trapezoidal protrusion portion of the step side gear, and the vicinity thereof. It is a top view which shows the relationship between the door side gear and the step side gear of a conversion device when the door is fully opened.
  • FIG. 26 is an enlarged view of an arc portion of the door side gear and a trapezoidal protrusion portion of the step side gear in FIG. 26. It is a top view which shows the relationship between the door side gear and the step side gear of a conversion device when a door is closed to half open.
  • FIG. 28 is an enlarged view of the arc portion of the door side gear, the trapezoidal protrusion portion of the step side gear, and the vicinity thereof in FIG. 28. It is a top view which shows the relationship between the door side gear and the step side gear of a conversion device when a door is further closed from a half-open.
  • FIG. 30 is an enlarged view of the arc portion of the door side gear, the trapezoidal protrusion portion of the step side gear, and the vicinity thereof. It is a schematic perspective view which shows the vehicle with a conventional step.
  • the vehicle with steps according to the present embodiment is, for example, a vehicle having a movable step at the position of the front door opening of the vehicle body.
  • the front-rear, left-right, and up-down shown in the figure correspond to the front-back, left-right, and up-down of the vehicle with steps according to the present embodiment.
  • a front door opening 11 corresponding to the front seat and a rear door opening (not shown) corresponding to the central portion and the rear seat are formed on the side surface of the vehicle body 10.
  • a rocker 30 which is a cylindrical frame extending in the front-rear direction of the vehicle is provided at the front door opening 11 and the lower edge of the rear door opening.
  • a front pillar 12, which is a front pillar of the vehicle interior, is erected on the front side of the front door opening 11.
  • the front door 20 is connected to the side surface of the front pillar 12 via the upper and lower door hinges 21 in a horizontally rotatable state. That is, the front door 20 rotates horizontally around the door hinge 21, so that the front door opening 11 of the vehicle body 10 is opened and closed.
  • the rocker 30 at the lower edge of the front door opening 11 has a rocker inner 31 and a rocker outer 32 having a substantially U-shaped cross section extending in the front-rear direction of the vehicle. It is formed into a tubular shape by being aligned from the width direction (left and right direction). Further, in the locker 30, a reinforcement 35 is provided to reinforce the locker 30 by partitioning the internal space in the vehicle width direction. Further, an edge 14f of the floor panel 14 of the vehicle body 10 is fixed to the upper surface of the rocker inner 31. Further, as shown in FIGS. 1, 3 and the like, a fixing step 37 is horizontally attached to the lower side surface of the rocker outer 32 at the position of the front door opening 11.
  • the fixing step 37 is covered with a garnish 23 provided at the lower end of the front door 20 in a state where the front door 20 is closed.
  • the garnish 23 is optional.
  • a step plate 43 of the movable step device 40 (described later) is stored under the fixed step 37.
  • the movable step device 40 is provided in the lower part of the floor of the vehicle body 10.
  • the movable step device 40 projects the step plate 43 from the lower side of the fixing step 37 to the outside in the vehicle width direction when the front door 20 is opened, and the step plate 43 is moved to the lower side of the fixing step 37 when the front door 20 is closed.
  • It is a storage device.
  • the movable step device 40 includes the step plate 43, a four-bar link mechanism 45 that supports the step plate 43 so as to be horizontally in and out, and the rotational power of the front door 20 to be taken in and out of the step plate 43.
  • It is equipped with a conversion device 400 that converts force into force.
  • the step plate 43 is formed in a long strip shape in the front-rear direction, and is held in a horizontal state in parallel with the rocker 30 in a plan view.
  • the four-section link mechanism 45 includes a link bracket 450 fixed to the lower surface of the rocker 30, a front support link 451 connected to the link bracket 450 in a horizontally rotatable state, and a rear. It is composed of a support link 455.
  • the front support link 451 is a link formed in a substantially L shape, and one end of the front support link 451 is supported by the step plate 43 while the front portion of the step plate 43 is supported from below. It is connected to the center of the front portion by a first connecting vertical pin 451a so as to be horizontally rotatable. Further, the other end of the front support link 451 is connected to the right side of the front portion of the link bracket 450 in a state where it can be horizontally rotated by a second connecting vertical pin 451b.
  • the rear support link 455 is a strip-shaped link, in which the rear portion of the step plate 43 is supported from below, and then one end of the support link 455 is at the center of the rear portion of the step plate 43. It is connected in a horizontally rotatable state by a connecting vertical pin 455a. Further, the other end of the rear support link 455 is connected to the rear right side of the link bracket 450 in a horizontally rotatable state by a fourth connecting vertical pin 455b. Then, the front support link 451 and the rear support link 455 rotate around the second connecting vertical pin 451b and the fourth connecting vertical pin 455b on the link bracket 450 side, so that as shown in FIGS. 5 and 6, as shown in FIGS.
  • the step plate 43 makes a horizontal circular motion in parallel with the rocker 30. As a result, the step plate 43 protrudes outward in the vehicle width direction from the lower side of the fixing step 37, or is stored under the fixing step 37.
  • the conversion device 400 is a device that converts the rotational power of the front door 20 into the loading / unloading force of the step plate 43.
  • the conversion device 400 includes a device bracket 401 fixed to the lower surface of the rocker inner 31, a door side gear 403 supported by the device bracket 401 in a horizontally rotatable state, and a step. It is provided with a side gear 405.
  • the door side gear 403 and the step side gear 405 are both spur gears and mesh with each other.
  • the conversion device 400 is engaged with a door side link 410 that connects the front door 20 and the door side gear 403, a step side link 412 that rotates integrally with the step side gear 405, and a roller 412r of the step side link 412. It is provided with a rail 415 on the side of the matching step plate 43.
  • the door side link 410 is a door when the door side gear 403 rotates clockwise when the front door 20 rotates in the opening direction and when the front door 20 rotates in the closing direction.
  • the front door 20 and the door side gear 403 are connected so that the side gear 403 rotates counterclockwise.
  • the door-side link 410 is a strip-shaped link, and one end side thereof is connected to a position near the rotation center of the front door 20 by a door-side connecting vertical pin 410a so as to be horizontally rotatable. Further, the other end side of the door side link 410 is connected to a position eccentric from the rotation center C1 of the door side gear 403 by a gear side connecting vertical pin 410b so as to be horizontally rotatable.
  • the door side link 410 is connected to the door side gear 403 by a gear side connecting vertical pin 410b from the lower side.
  • the door-side link 410 is connected to the pin support portion 24 provided at the lower end of the front door 20 by the door-side connecting vertical pin 410a while being held horizontally below the locker 30.
  • the connection position between the door side link 410, the front door 20, and the door side gear 403 is such that, for example, when the rotation angle of the front door 20 increases, the rotation angle of the door side gear 403 increases. It is set to the position.
  • the step-side gear 405 that meshes with the door-side gear 403 is manufactured in a predetermined gear ratio with the door-side gear 403, and when the door-side gear 403 rotates, it becomes the door-side gear 403. Rotate in the opposite direction by a predetermined angle.
  • the base end portion of the step side link 412 is connected to the rotation center C2 of the step side gear 405 in a state in which relative rotation is not possible.
  • the base end portion of the step side link 412 is fixed to the lower surface of the step side gear 405 while being held horizontally below the rocker 30.
  • a roller support pin 412p is vertically connected to the tip of the step side link 412, and a roller 412r is coaxially provided at the upper end of the roller support pin 412p. Then, the roller 412r is fitted to the rail 415 in a state in which the roller 412r can roll along the rail 415 on the step plate 43 side.
  • the rail 415 of the step plate 43 is supported by the bracket 43p fixed to the lower surface of the step plate 43.
  • the rail 415 is formed in a substantially inverted U shape in cross section, and is configured so that the roller 412r of the step side link 412 can be fitted from below.
  • the rail 415 includes a straight portion 415s extending in the front-rear direction in parallel with the step plate 43, and an arc portion 415e continuously provided on the front side of the straight portion 415s. As shown in FIGS.
  • the arc portion 415e of the rail 415 is configured to overlap the movement locus of the roller 412r of the step side link 412 that rotates around the rotation center C2 of the step side gear 405. ..
  • the step side link 412 is at a position extending diagonally rearward, and the roller 412r is held at the rear end position of the straight portion 415s of the rail 415. There is.
  • the step plate 43 is stored under the fixing step 37 as shown in FIGS. 3 and 5. Further, the rail 415 attached to the step plate 43 via the bracket 43p is stored under the rocker 30 as shown in FIG. Then, as described above, the step side link 412 is in a position extending diagonally rearward (see FIG. 5), and the roller 412r at the tip of the step side link 412 is held at the rear end position of the straight portion 415s of the rail 415. There is.
  • the straight portion 415s of the rail 415 is a roller. It receives a pressing force in the perpendicular direction (right direction) from 412r. As a result, the step plate 43 is pushed to the right (outside in the vehicle width direction) via the rail 415, and the rail 415 and the step plate 43 are pushed by the four-section link mechanism 45 as shown in FIG. It makes a horizontal circular motion in parallel with, and protrudes from the lower side of the fixing step 37. Then, as shown in FIG.
  • the step plate 43 protrudes.
  • the amount is maximized.
  • the rotation angle of the front door 20 when the protrusion amount of the step plate 43 is maximized is ⁇ as shown in FIG. 6, and is set to a value smaller than the half-open angle of the front door 20. ..
  • the step side link 412 further rotates counterclockwise by the action of the door side link 410, the door side gear 403, and the step side gear 405.
  • the roller 412r at the tip (rotational free end) of the step side link 412 rolls forward along the arc portion 415e of the rail 415.
  • the arc portion 415e of the rail 415 is configured to overlap the movement locus of the roller 412r of the step side link 412. Therefore, the roller 412r of the step side link 412 rolls forward along the arc portion 415e of the rail 415, so that the protruding amount of the step plate 43 is maintained in the maximum state.
  • the step side link 412 rotates to the left rotation limit position, and the roller 412r of the step side link 412 rotates to the arc portion of the rail 415 as shown in FIG. It reaches the front end position of 415e.
  • the door side link 410 is pushed by the front door 20 to rotate the door side gear 403 counterclockwise.
  • the step side gear 405 rotates clockwise and the step side link 412 rotates clockwise.
  • the roller 412r of the step side link 412 rolls backward along the arc portion 415e of the rail 415 and the straight portion 415s. Then, the roller 412r of the step side link 412 rolls backward along the straight portion 415s of the rail 415, so that the straight portion 415s of the rail 415 receives a tensile force in the left direction (inside in the vehicle width direction). As a result, the step plate 43 is stored under the fixing step 37.
  • the front door 20 corresponds to the door of the present invention
  • the front door opening 11 corresponds to the door opening of the present invention.
  • the rotation angle ⁇ of the front door 20 corresponds to a predetermined angle smaller than the fully open angle of the door of the present invention.
  • the roller 412r of the step side link 412 corresponds to the free rotation end side of the step side link of the present invention.
  • the conversion device 400 reduces the amount of protrusion of the step plate 43 by rotating the front door 20 (door) to a rotation angle ⁇ (a predetermined angle smaller than the fully open angle). Can be maximized. That is, the step plate 43 can be projected to the maximum before the front door 20 is fully opened. Therefore, the size of the step plate 43 can be determined based on the ease of getting on and off regardless of the rotation angle of the front door 20. Therefore, the size of the step plate 43 can be made into a required size. Further, the storage space of the step plate 43 can be made compact.
  • the vehicle with steps according to the present embodiment is a partially modified version of the conversion device 400 in the vehicle with steps according to the first embodiment. That is, in the conversion device 400 according to the first embodiment, as shown in FIG. 6, when the front door 20 further rotates in the opening direction (left rotation) after the protrusion amount of the step plate 43 is maximized, the step An example is shown in which the roller 412r of the side link 412 rolls forward along the arc portion 415e of the rail 415. On the other hand, in the conversion device 400x according to the second embodiment, as shown in FIG.
  • a missing tooth gear is used, and after the protrusion amount of the step plate 43 is maximized, the front door 20 is rotated in the opening direction. Even if it moves, the force is not transmitted between the door side gear 403 and the step side gear 405. As a result, after the amount of protrusion of the step plate 43 is maximized, the left rotation of the step side link 412 is prohibited.
  • the members of the conversion device 400x according to the present embodiment and the same members as the members of the conversion device 400 according to the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
  • toothless gears are used for the door side gear 403 and the step side gear 405 in the conversion device 400x of the present embodiment. That is, the door side gear 403 has a gear portion 403w in which teeth are formed, an arc portion 403f in which teeth are cut out and an arc-shaped outer peripheral surface is formed, and between the gear portion 403w and the arc portion 403f.
  • the formed trapezoidal protrusion 403d is provided.
  • the step side gear 405 has a gear portion 405w to which the gear portion 403w of the door side gear 403 can be meshed, a notch portion 405c into which the trapezoidal protrusion 403d of the door side gear 403 can be fitted, and the notch portion 405c next to the notch portion 405c.
  • the trapezoidal protrusion 405d and the arc portion 405f are provided.
  • the tip of the trapezoidal protrusion 405d of the step side gear 405 is a concave arc portion 405e formed in a concave arc shape. As shown in FIG.
  • the concave arc portion 405e of the trapezoidal protrusion 405d of the step side gear 405 is a door side gear in a state where the gear portion 403w of the door side gear 403 and the step side gear 405 are disengaged. It is configured to always be in contact with the outer peripheral surface of the arc portion 403f of the 403. That is, the radius of curvature of the concave arc portion 405e of the step side gear 405 is set to a value equal to the radius of curvature of the arc portion 403f of the door side gear 403.
  • the trapezoidal protrusion 403d of the door side gear 403 fits with the notch 405c of the step side gear 405.
  • the gear portion 403w of the door side gear 403 and the gear portion 405w of the step side gear 405 are disengaged except for the end portion.
  • the step side link 412 rotates counterclockwise to the vicinity of the left rotation limit position, and the roller 412r is held near the front end position of the rail 415 (straight line portion 415s).
  • the door side gear 403 When the front door 20 rotates in the opening direction beyond the rotation angle ⁇ , the door side gear 403 continues to rotate clockwise, and the gear portion 403w of the door side gear 403 and the gear of the step side gear 405 continue to rotate. The meshing with the portion 405w is completely released. Further, the trapezoidal protrusion 403d of the door side gear 403 is disengaged from the notch 405c of the step side gear 405. As a result, the counterclockwise rotation of the step side gear 405 is stopped. That is, as shown in FIG. 9, the step side link 412 rotates counterclockwise even if the front door 20 further rotates in the opening direction after the roller 412r at the tip reaches the front end position of the straight portion 415s of the rail 415. It is held in the limit position.
  • step side gear 405 After the rotation of the step side gear 405 is stopped, when the front door 20 rotates in the opening direction and the door side gear 403 continues to rotate clockwise, as shown in FIGS. 15 and 16, the trapezoidal protrusion of the step side gear 405
  • the concave arc portion 405e of the portion 405d comes into contact with the outer peripheral surface of the arc portion 403f of the door side gear 403 and slides relatively.
  • the end of the trapezoidal protrusion 403d of the door side gear 403 rotating counterclockwise becomes the step side gear. It abuts on the end of the trapezoidal protrusion 405d of 405. As a result, the door side gear 403 presses the step side gear 405 in the clockwise rotation direction. As a result, the trapezoidal protrusion 403d of the door-side gear 403 rotating counterclockwise fits the notch 405c of the step-side gear 405 that has started clockwise rotation, and further, the gear portion 403w of the door-side gear 403 is fitted with the step-side gear.
  • step side link 412 of the step side gear 405 rotates clockwise, and the roller 412r on the free rotation end side of the step side link 412 moves rearward along the rail 415 from the front end position of the rail 415.
  • the trapezoidal protrusion 403d of the door side gear 403 corresponds to the protrusion of the door side gear of the present invention
  • the trapezoidal protrusion 405d of the step side gear 405 corresponds to the protrusion of the step side gear.
  • the front door 20 of the step side link 412 is further opened after the roller 412r at the tip reaches the front end position of the straight portion 415s of the rail 415. Even if it rotates in the direction, it is held in the left rotation limit position. Therefore, the arc portion 415e of the rail 415, which was necessary in the conversion device 400 according to the first embodiment, is no longer necessary in the conversion device 400x according to the present embodiment. Therefore, the rail 415 on the step plate 43 side can be miniaturized.
  • the vehicle with steps according to the present embodiment is a partially modified configuration of the door side gear 403 and the step side gear 405 of the conversion device 400x in the vehicle with steps according to the second embodiment.
  • the members of the conversion device according to the present embodiment which are the same as the members of the conversion device 400x according to the second embodiment, are designated by the same reference numerals and the description thereof will be omitted.
  • the door-side gear 403 omits the trapezoidal protrusion 403d of the door-side gear 403 in the second embodiment, and instead uses the door-side cam 514 of the cam mechanism 510. It is provided. Further, the door side gear 403 includes two types of arc portions 403x and 403y having different diameters with the gear portion 403w interposed therebetween. That is, the door side gear 403 includes a gear portion 403w, a large-diameter arc portion 403x, and a small-diameter arc portion 403y.
  • the end of the large-diameter arc portion 403x of the door-side gear 403 on the gear portion 403w side is a pressing surface F formed in a convex curved surface shape.
  • the pressing surface F of the door side gear 403 presses the concave arc portion 502 (described later) of the trapezoidal protrusion 500 of the step side gear 405 when the door side gear 403 rotates clockwise (when the front door 20 is opened). It is configured to be possible.
  • the pressing surface F of the door side gear 403 will be referred to as a concave arc pressing surface F.
  • the door-side cam 514 of the cam mechanism 510 is fixed to the lower surface of the door-side gear 403 in an overlapping state.
  • the door-side cam 514 is formed with a step-side cam pressing surface G on a surface located opposite to the concave arc pressing surface F of the door-side gear 403 in the circumferential direction.
  • the step side cam pressing surface G of the door side cam 514 is configured to be able to press the step side cam 512 (described later) of the step side gear 405 when the door side gear 403 rotates counterclockwise (when the front door 20 is closed). Has been done.
  • the step side gear 405 includes the step side cam 512 of the cam mechanism 510 described above.
  • the step side gear 405 is provided with the gear portion 405w, the trapezoidal protrusion portion 500, and the arc portion 405f in order in the circumferential direction.
  • the trapezoidal protrusion 500 has a substantially inverted trapezoidal planar shape.
  • the concave arc portion 502 at the tip of the trapezoidal protrusion 500 is configured to be able to come into contact with the outer peripheral surface of the large diameter arc portion 403x of the door side gear 403.
  • the radius of curvature of the concave arc portion 502 at the tip of the trapezoidal protrusion 500 is set to a value sufficiently smaller than the radius of curvature of the large diameter arc portion 403x of the door side gear 403.
  • the concave arc portion 502 of the trapezoidal protrusion 500 of the step side gear 405 abuts on the outer peripheral surface of the large diameter arc portion 403x of the door side gear 403 in a well-balanced manner from the radial direction. In this state, the concave arc portion 502 comes into point contact with the large diameter arc portion 403x at points A and B.
  • step side of the cam mechanism 510 protruding outward in the radial direction from the lower side of the center position of the concave arc portion 502 of the trapezoidal protrusion 500.
  • a cam 512 is provided.
  • the step-side cam 512 is formed on the base end side of the step-side link 412, and is fixed to the lower surface of the step-side gear 405 via the step-side link 412.
  • the concave arc pressing surface F at the end of the large diameter arc portion 403x of the door side gear 403 is on the step side.
  • the concave arc portion 502 of the trapezoidal protrusion 500 of the gear 405 is pressed. That is, when the concave arc pressing surface F of the door side gear 403 that rotates clockwise presses the concave arc portion 502 of the step side gear 405, the step side gear 405 rotates counterclockwise. As a result, the meshing between the gear portion 403w of the door side gear 403 and the gear portion 405w of the step side gear 405 is released. In this state, the step side link 412 of the step side gear 405 is held at the left rotation limit position, and the roller 412r is held at the front end position of the rail 415 (straight line portion 415s) (see FIG. 9).
  • the door side gear 403 continues to rotate clockwise and the step side gear 405 is held in the rotation stopped state as shown in FIGS. 24 to 27.
  • the step side link 412 is left even if the front door 20 further rotates in the opening direction after the roller 412r at the tip reaches the front end position of the straight portion 415s of the rail 415. It is held in the rotation limit position.
  • the concave arc portion 502 of the trapezoidal protrusion 500 of the step side gear 405 is a door.
  • Point contact is made at point B with respect to the outer peripheral surface of the large-diameter arc portion 403x of the side gear 403.
  • the concave arc portion 502 of the trapezoidal protrusion 500 of the step side gear 405 makes point contact with the outer peripheral surface of the large diameter arc portion 403x of the door side gear 403 rotating clockwise at the point B.
  • the sliding resistance of the concave arc portion 502 with respect to the outer peripheral surface of the large diameter arc portion 403x can be reduced. Therefore, it is possible to suppress a malfunction caused by an increase in sliding resistance due to adhesion of dust or foreign matter.
  • the width dimension of the trapezoidal protrusion 500 of the step side gear 405 is set sufficiently larger than the width dimension of the trapezoidal protrusion 405d in the second embodiment. Therefore, it is possible to prevent a problem that the trapezoidal protrusion 405d is tilted as the sliding resistance increases and the corner portion of the trapezoidal protrusion 405d bites into the outer peripheral surface of the large-diameter arc portion 403x.
  • the step-side gear 405 starts rotating clockwise, and the gear portion 405w of the step-side gear 405 changes with respect to the gear portion 403w of the door-side gear 403 rotating counterclockwise. It will mesh.
  • the step side link 412 of the step side gear 405 rotates clockwise, and the roller 412r on the free rotation end side of the step side link 412 moves rearward along the rail 415 from the front end position of the rail 415.
  • the trapezoidal protrusion 500 of the step side gear 405 corresponds to the protrusion of the step side gear in the present invention.
  • the large-diameter arc portion 403x of the door side gear 403 corresponds to the arc portion of the door side gear in the present invention.
  • the concave arc portion 502 of the trapezoidal protrusion 500 of the step side gear 405 is point A with respect to the outer peripheral surface of the large diameter arc portion 403x of the rotating door side gear 403.
  • the sliding resistance of the concave arc portion 502 with respect to the outer peripheral surface of the large diameter arc portion 403x can be reduced. Therefore, it is possible to suppress a malfunction caused by an increase in sliding resistance due to adhesion of dust or foreign matter.
  • the width dimension of the trapezoidal protrusion 500 of the step side gear 405 is set sufficiently larger than the width dimension of the trapezoidal protrusion 405d in the second embodiment. Therefore, it is possible to prevent a problem that the trapezoidal protrusion 405d is tilted as the sliding resistance increases and the corner portion of the trapezoidal protrusion 405d bites into the outer peripheral surface of the large-diameter arc portion 403x.
  • the present disclosure is not limited to the above embodiment, and changes can be made without departing from the present invention.
  • the movable step device 40 according to the first and second embodiments, an example is shown in which the step plate 43 is supported by the four-node link mechanism 45 so as to be horizontally put in and out.
  • the four-bar link mechanism 45 instead of the four-bar link mechanism 45, for example, a pair of parallel rails and a slider may be used to support the step plate 43 so that it can be horizontally moved in and out.
  • a movable step device 40 is provided in the front door opening 11 of the vehicle body 10 and the step plate 43 is moved in and out by a force for opening and closing the front door 20.
  • the radius of curvature of the concave arc portion 502 of the step side gear 405 is sufficiently larger than the radius of curvature of the large diameter arc portion 403x of the door side gear 403.
  • the concave arc portion 502 is configured to be able to make point contact with the large diameter arc portion 403x at points A and B.
  • the radius of curvature of the concave arc portion 502 of the step side gear 405 is set to the same value as the radius of curvature of the large diameter arc portion 403x of the door side gear 403, and a spherical or convex arc shape is formed in the center of the concave arc portion 502. It is also possible to provide a protrusion and bring the protrusion into point contact with the large-diameter arc portion 403x at one point.

Abstract

This vehicle having a step includes a door (20) that opens and closes a door opening (11) of a vehicle body by being horizontally pivotally moved, and a step plate (43) that is horizontally retractable under the door opening (11). The vehicle is provided with a conversion device (400) for converting pivotal movement force of the door (20) into force for pulling out/pushing in the step plate (43), and the conversion device (400) is configured to maximize the protruding amount of the step plate (43) by pivotally moving the door (20) to a predetermined angle θ smaller than a full open angle.

Description

ステップ付の車両Vehicle with steps
　本開示は、水平回動させることで車両ボディのドア開口部を開閉するドアと、前記ドア開口部の下側で水平に出し入れ可能なステップ板とを備えるステップ付の車両に関する。 The present disclosure relates to a vehicle with a step including a door that opens and closes a door opening of a vehicle body by horizontally rotating, and a step plate that can be horizontally moved in and out under the door opening.
　従来のステップ付の車両に関する技術が特開２００４－１３６７１８号公報に記載されている。当該文献のステップ付の車両は、図３２に示すように、扇形のステップ板１０２を備えており、そのステップ板１０２の扇形の半径に相当する一辺がドア１００の下端縁に取付けられている。また、車両ボディ１０３の床下側には、ステップ板１０２の扇形の円弧に相当する部分をガイドする円弧形のガイドレール（図示省略）が設けられている。これにより、ドア１００を開方向に回動させることで、自動的にステップ板１０２を車両ボディ１０３の下から引き出す（突出させる）ことが可能になる。 A conventional technique relating to a vehicle with a step is described in Japanese Patent Application Laid-Open No. 2004-136718. As shown in FIG. 32, the vehicle with steps in the document is provided with a fan-shaped step plate 102, and one side corresponding to the fan-shaped radius of the step plate 102 is attached to the lower end edge of the door 100. Further, on the underfloor side of the vehicle body 103, an arc-shaped guide rail (not shown) is provided to guide a portion of the step plate 102 corresponding to the fan-shaped arc. As a result, by rotating the door 100 in the opening direction, the step plate 102 can be automatically pulled out (protruded) from under the vehicle body 103.
　しかし、上記したステップ板１０２はドア１００に取付けられているため、ドア１００を全閉位置と全開位置間で回動させるのに必要な平面積と等しい大きさまでステップ板１０２のサイズを大きくする必要がある。また、ステップ板１０２のサイズが大きくなることで、ステップ板１０２の収納スペースも大きくとる必要がある。 However, since the step plate 102 described above is attached to the door 100, it is necessary to increase the size of the step plate 102 to a size equal to the flat area required to rotate the door 100 between the fully closed position and the fully open position. There is. Further, as the size of the step plate 102 increases, it is necessary to take a large storage space for the step plate 102.
　したがって、改良されたステップ付の車両が必要とされている。 Therefore, a vehicle with improved steps is needed.
　本開示の第１側面は、水平回動させることで車両ボディのドア開口部を開閉するドアと、前記ドア開口部の下側で水平に出し入れ可能なステップ板とを備えるステップ付の車両であって、前記ドアの回動力を前記ステップ板の出し入れ力に変換する変換装置を備えており、前記変換装置は、前記ドアが全開角度よりも小さい所定角度まで回動することで前記ステップ板の突出量を最大にできるように構成されている。 The first side surface of the present disclosure is a vehicle with a step including a door that opens and closes a door opening of a vehicle body by horizontally rotating, and a step plate that can be horizontally moved in and out under the door opening. The door is provided with a conversion device that converts the rotational power of the door into the force of taking in and out of the step plate, and the conversion device projects the step plate by rotating the door to a predetermined angle smaller than the fully open angle. It is configured to maximize the amount.
　本側面によると、変換装置は、ドアが全開角度よりも小さい所定角度まで回動することでステップ板の突出量を最大にできるように構成されている。即ち、ドアが所定角度から全開角度まで回動する間は、ステップ板は最大限に突出した状態（展開状態）に保持される。このため、ドアを全閉位置と全開位置間で回動させるのに必要な平面積とは無関係にステップ板のサイズを決定できる。したがって、ステップ板のサイズを乗降に必要なサイズにできる。また、ステップ板の格納スペースもコンパクトにできる。 According to this side surface, the conversion device is configured so that the protrusion amount of the step plate can be maximized by rotating the door to a predetermined angle smaller than the fully open angle. That is, while the door rotates from a predetermined angle to a fully open angle, the step plate is held in the maximum protruding state (deployed state). Therefore, the size of the step plate can be determined regardless of the flat area required to rotate the door between the fully closed position and the fully open position. Therefore, the size of the step board can be set to the size required for getting on and off. In addition, the storage space for the step plate can be made compact.
　本開示の第２側面によると、変換装置は、車両ボディに設けられたドア側歯車と、ドアの回動力を前記ドア側歯車に伝達するドア側リンクと、前記車両ボディに設けられ、前記ドア側歯車と噛合して、そのドア側歯車の回転力を前記ステップ板に伝えるステップ側歯車とを備えている。 According to the second aspect of the present disclosure, the conversion device is provided on the vehicle body, the door side gear, the door side link for transmitting the rotational power of the door to the door side gear, and the door provided on the vehicle body. It is provided with a step side gear that meshes with the side gear and transmits the rotational force of the door side gear to the step plate.
　本開示の第３側面によると、変換装置は、ステップ側歯車と共に回動するステップ側リンクと、前記ステップ板に設けられており、前記ステップ側リンクの回動自由端側をガイドする直線状のレールとを備えており、前記ステップ側リンクの回動により、そのステップ側リンクの回動自由端側が円弧運動をしつつ前記レールに沿って移動することで、前記レールと前記ステップ板とが車幅方向に移動可能な構成である。即ち、ステップ側リンクとレールの働きにより、ステップ側歯車の回転力をステップ板の出し入れ力に変換できるようになる。 According to the third aspect of the present disclosure, the conversion device is provided on the step side link that rotates together with the step side gear and the step plate, and has a linear shape that guides the free rotation end side of the step side link. A rail is provided, and the rotation of the step-side link causes the free-rotating end side of the step-side link to move along the rail while performing an arc motion, so that the rail and the step plate are brought together by a vehicle. It is a configuration that can be moved in the width direction. That is, by the action of the step side link and the rail, the rotational force of the step side gear can be converted into the loading / unloading force of the step plate.
　本開示の第４側面によると、レールには、直線部と、ステップ側リンクの回動自由端側の移動軌跡に重なる円弧部とが連続して設けられている。これにより、ステップ側リンクの回動自由端側がレールの直線部に沿って移動することで、ステップ板が車幅方向に移動可能になる。また、ステップ側リンクが引き続き回動しても、ステップ側リンクの回動自由端側がレールの円弧部に沿って移動することで、ステップ板の移動が停止してその位置に保持される。 According to the fourth side surface of the present disclosure, the rail is continuously provided with a straight portion and an arc portion that overlaps the movement locus on the free rotation end side of the step side link. As a result, the free-rotating end side of the step-side link moves along the straight portion of the rail, so that the step plate can move in the vehicle width direction. Further, even if the step side link continues to rotate, the free rotation end side of the step side link moves along the arc portion of the rail, so that the movement of the step plate is stopped and held at that position.
　本開示の第５側面によると、ドア側歯車とステップ側歯車とは、ドアが所定角度を超えて回動する際は、歯車の噛合が解除されるように構成されている。このため、ドアが所定角度を超えて回動する際は、ドアの回動力がステップ板側に伝達されなくなり、ステップ板の移動が停止する。 According to the fifth aspect of the present disclosure, the door side gear and the step side gear are configured so that the gears are disengaged when the door rotates beyond a predetermined angle. Therefore, when the door rotates beyond a predetermined angle, the rotational power of the door is not transmitted to the step plate side, and the movement of the step plate is stopped.
　本開示の第６側面によると、ドア側歯車には、歯が形成されている歯車部と、円弧状の外周面が形成されている円弧部と、前記歯車部と前記円弧部間に設けられた突起部とを備えており、ステップ側歯車には、歯が形成されている歯車部と、円弧状の外周面が形成されている円弧部と、前記歯車部と前記円弧部間に設けられた突起部とを備えており、ドアが所定角度を超えて回動し、前記ドア側歯車の歯車部と前記ステップ側歯車の歯車部との噛合が解除された状態では、前記ステップ側歯車の突起部の先端が常に前記ドア側歯車の円弧部に対して接触しており、前記ドアが全開角度から所定角度まで閉じられる過程で、前記ドアの回動力を受ける前記ドア側歯車の突起部が前記ステップ側歯車の突起部を押圧することで、前記ステップ側歯車の歯車部が前記ドア側歯車の歯車部と噛合を開始する。 According to the sixth side surface of the present disclosure, the door side gear is provided with a gear portion on which teeth are formed, an arc portion on which an arc-shaped outer peripheral surface is formed, and between the gear portion and the arc portion. The step side gear is provided with a gear portion on which teeth are formed, an arc portion on which an arc-shaped outer peripheral surface is formed, and between the gear portion and the arc portion. In a state where the door rotates beyond a predetermined angle and the gear portion of the door side gear and the gear portion of the step side gear are disengaged, the step side gear is provided. The tip of the protrusion is always in contact with the arc portion of the door side gear, and in the process of closing the door from the fully open angle to a predetermined angle, the protrusion of the door side gear that receives the rotational power of the door By pressing the protrusion of the step-side gear, the gear portion of the step-side gear starts meshing with the gear portion of the door-side gear.
　本開示の第７側面によると、ドア側歯車には、歯が形成されている歯車部と、円弧状の外周面が形成されている円弧部とを備えており、ステップ側歯車には、歯が形成されている歯車部と、円弧状の外周面が形成されている円弧部と、前記歯車部と前記円弧部間に設けられた突起部とを備えており、前記ドアが所定角度を超えて回動し、前記ドア側歯車の歯車部と前記ステップ側歯車の歯車部との噛合が解除された状態では、前記ステップ側歯車の突起部の先端が常に前記ドア側歯車の円弧部に対して円周方向において点接触している。このため、ドア側歯車の回転（ステップ歯車の停止）時における前記ドア側歯車の円弧部とステップ側歯車の突起部間の摺動抵抗を小さくできる。これにより、ドア側歯車の円弧部とステップ側歯車の突起部間に異物等が入り込んでも、摺動抵抗の上昇に起因する動作不良を防止できる。 According to the seventh side surface of the present disclosure, the door side gear includes a gear portion on which teeth are formed and an arc portion on which an arc-shaped outer peripheral surface is formed, and the step side gear has teeth. A gear portion having a In a state where the gear portion of the door side gear and the gear portion of the step side gear are disengaged, the tip of the protrusion of the step side gear is always with respect to the arc portion of the door side gear. There is point contact in the circumferential direction. Therefore, the sliding resistance between the arc portion of the door side gear and the protrusion of the step side gear when the door side gear is rotated (the step gear is stopped) can be reduced. As a result, even if foreign matter or the like enters between the arc portion of the door side gear and the protrusion portion of the step side gear, it is possible to prevent malfunction due to an increase in sliding resistance.
　本開示の第８側面によると、ドア側歯車とステップ側歯車間には、前記ドアが全開角度から所定角度まで閉じられる過程で、前記ドア側歯車の回転力を前記ステップ側歯車に伝達し、前記ステップ側歯車の歯車部を前記ドア側歯車の歯車部と噛合する位置まで回動させるカム機構が設けられている。このため、前記ドアが全開角度から所定角度まで閉じられることで、ドア側歯車の歯車部とステップ側歯車の歯車部とをスムーズに噛合させることができる。 According to the eighth side surface of the present disclosure, between the door side gear and the step side gear, the rotational force of the door side gear is transmitted to the step side gear in the process of closing the door from the fully open angle to a predetermined angle. A cam mechanism is provided that rotates the gear portion of the step-side gear to a position where it meshes with the gear portion of the door-side gear. Therefore, by closing the door from the fully open angle to a predetermined angle, the gear portion of the door side gear and the gear portion of the step side gear can be smoothly meshed.
本開示の実施形態１に係るステップ付の車両のドア開口部を室内側から見た模式斜視図である。FIG. 5 is a schematic perspective view of a door opening of a vehicle with a step according to the first embodiment of the present disclosure as viewed from the indoor side. 前記車両の床下部を表す縦断面図（図５のII-II矢視断面図）である。It is a vertical cross-sectional view (II-II arrow cross-sectional view of FIG. 5) which shows the lower part of the floor of the vehicle. 前記車両の床下部を表す縦断面図（図５のIII-III矢視断面図）である。It is a vertical cross-sectional view (III-III arrow cross-sectional view of FIG. 5) showing the lower part of the floor of the vehicle. 前記車両の床下部を表す縦断面図（図５のIV-IV矢視断面図）である。It is a vertical cross-sectional view (IV-IV arrow cross-sectional view of FIG. 5) showing the lower part of the floor of the vehicle. 前記ドア、変換装置、及びステップ板を表す全体平面図（ドア閉、ステップ板格納状態）である。It is an overall plan view (door closed, step plate retracted state) which shows the door, a conversion device, and a step plate. 前記ドア、変換装置、及びステップ板を表す全体平面図（ドア開途中、ステップ板展開状態）である。It is an overall plan view (in the middle of opening a door, a step plate unfolded state) which shows the door, a conversion device, and a step plate. 前記ドア、変換装置、及びステップ板を表す全体平面図（ドア全開、ステップ板展開状態）である。It is an overall plan view (door fully open, step plate unfolded state) which shows the door, a conversion device, and a step plate. 本発明の実施形態２に係るステップ付の車両のドア、変換装置、及びステップ板を表す全体平面図（ドア閉、ステップ板格納状態）である。It is an overall plan view (door closed, step plate retracted state) which shows the door of the vehicle with a step which concerns on Embodiment 2 of this invention, a conversion device, and a step plate. 前記ドア、変換装置、及びステップ板を表す全体平面図（ドア開途中、ステップ板展開状態）である。It is an overall plan view (in the middle of opening a door, a step plate unfolded state) which shows the door, a conversion device, and a step plate. ドア閉、ステップ板格納状態のときの変換装置のドア側歯車とステップ側歯車との噛合状態を表す平面図（図８のX矢視図）である。It is a top view (X arrow view of FIG. 8) which shows the meshing state of the door side gear and the step side gear of the conversion device when the door is closed and the step plate is retracted. 図１０のXI矢視拡大図である。It is an enlarged view of XI arrow view of FIG. ドア開途中（半開以下）、ステップ板展開状態のときの変換装置のドア側歯車とステップ側歯車との噛合状態を表す平面図（図９のXII矢視図）である。It is a top view (XII arrow view of FIG. 9) which shows the meshing state of the door side gear and the step side gear of the conversion device at the time of opening a door (half open or less), and in the step plate unfolded state. 図１２のXIII矢視拡大図である。It is an enlarged view of XIII arrow view of FIG. ドア側歯車がさらに回転したときの拡大図である。It is an enlarged view when the door side gear rotates further. ドア全開、ステップ板展開状態のときの変換装置のドア側歯車とステップ側歯車との関係を表す平面図である。It is a top view which shows the relationship between the door side gear and the step side gear of the conversion device when the door is fully opened and the step plate is expanded. 図１５のXVII矢視拡大図である。It is an enlarged view of XVII arrow view of FIG. 本発明の実施形態３に係るステップ付の車両における変換装置のドア側歯車とステップ側歯車、及びカム機構を下方から見た斜視図である。It is a perspective view which looked at the door side gear, the step side gear, and the cam mechanism of the conversion device in the vehicle with a step which concerns on Embodiment 3 of this invention from the bottom. 前記変換装置のドア側歯車とステップ側歯車、及びカム機構の平面図である。It is a top view of the door side gear, the step side gear, and the cam mechanism of the conversion device. 前記ステップ側歯車の台形状突起部とドア側歯車の円弧部との接触状態を表す平面図である。It is a top view which shows the contact state between the trapezoidal protrusion of the step side gear, and the arc part of a door side gear. ドア閉、ステップ板格納状態のときの変換装置のドア側歯車とステップ側歯車との噛合状態を表す平面図である。It is a top view which shows the meshing state of the door side gear and the step side gear of a conversion device when a door is closed and a step plate is retracted. 図２０における歯車噛合部分の拡大図である。It is an enlarged view of the gear meshing portion in FIG. 20. ドア開途中（半開以下）で、ステップ板全開前のときの変換装置のドア側歯車とステップ側歯車との関係を表す平面図である。It is a top view which shows the relationship between the door side gear and the step side gear of the conversion device in the middle of opening a door (half open or less), and before the step plate is fully opened. 図２２におけるドア側歯車、及びステップ側歯車の歯車部、及びその近傍の拡大図である。It is an enlarged view of the gear part of the door side gear and the step side gear in FIG. 22 and the vicinity thereof. ドア開途中で、ステップ板全開（展開）後の変換装置のドア側歯車とステップ側歯車との関係を表す平面図である。It is a top view which shows the relationship between the door side gear and the step side gear of the conversion device after the step plate is fully opened (deployed) in the middle of opening a door. 図２４におけるドア側歯車の円弧部とステップ側歯車の台形状突起部、及びその近傍の拡大図である。FIG. 24 is an enlarged view of the arc portion of the door side gear, the trapezoidal protrusion portion of the step side gear, and the vicinity thereof. ドア全開のときの変換装置のドア側歯車とステップ側歯車との関係を表す平面図である。It is a top view which shows the relationship between the door side gear and the step side gear of a conversion device when the door is fully opened. 図２６におけるドア側歯車の円弧部とステップ側歯車の台形状突起部との拡大図である。FIG. 26 is an enlarged view of an arc portion of the door side gear and a trapezoidal protrusion portion of the step side gear in FIG. 26. ドアが半開まで閉じる際の変換装置のドア側歯車とステップ側歯車との関係を表す平面図である。It is a top view which shows the relationship between the door side gear and the step side gear of a conversion device when a door is closed to half open. 図２８におけるドア側歯車の円弧部とステップ側歯車の台形状突起部、及びその近傍の拡大図である。FIG. 28 is an enlarged view of the arc portion of the door side gear, the trapezoidal protrusion portion of the step side gear, and the vicinity thereof in FIG. 28. ドアが半開からさらに閉じる際の変換装置のドア側歯車とステップ側歯車との関係を表す平面図である。It is a top view which shows the relationship between the door side gear and the step side gear of a conversion device when a door is further closed from a half-open. 図３０におけるドア側歯車の円弧部とステップ側歯車の台形状突起部、及びその近傍の拡大図である。FIG. 30 is an enlarged view of the arc portion of the door side gear, the trapezoidal protrusion portion of the step side gear, and the vicinity thereof. 従来のステップ付の車両を表す模式斜視図である。It is a schematic perspective view which shows the vehicle with a conventional step.
〔実施形態１〕
　以下、図１～図７に基づいて本開示の実施形態１に係るステップ付の車両について説明する。本実施形態に係るステップ付の車両は、例えば、車両ボディのフロントドア開口部の位置に可動ステップを備える車両である。ここで、図中に示す前後左右、及び上下は、本実施形態に係るステップ付の車両の前後左右、及び上下に対応している。 [Embodiment 1]
Hereinafter, the vehicle with steps according to the first embodiment of the present disclosure will be described with reference to FIGS. 1 to 7. The vehicle with steps according to the present embodiment is, for example, a vehicle having a movable step at the position of the front door opening of the vehicle body. Here, the front-rear, left-right, and up-down shown in the figure correspond to the front-back, left-right, and up-down of the vehicle with steps according to the present embodiment.
＜車両ボディ１０の概要について＞
　車両ボディ１０の側面には、図１に示すように、前部座席に対応するフロントドア開口部１１と、中央部、及び後部座席に対応するリヤドア開口部（図示省略）とが形成されている。そして、フロントドア開口部１１と前記リヤドア開口部の下縁部には、車両前後方向に延びる筒状のフレームであるロッカー３０が設けられている。フロントドア開口部１１の前側には車室の前側支柱であるフロントピラー１２が立設されている。そして、フロントピラー１２の側面に上下のドアヒンジ２１を介してフロントドア２０が水平回動可能な状態で連結されている。即ち、フロントドア２０がドアヒンジ２１を中心に水平回動することで、車両ボディ１０のフロントドア開口部１１が開閉される。 <Overview of vehicle body 10>
As shown in FIG. 1, a front door opening 11 corresponding to the front seat and a rear door opening (not shown) corresponding to the central portion and the rear seat are formed on the side surface of the vehicle body 10. .. A rocker 30 which is a cylindrical frame extending in the front-rear direction of the vehicle is provided at the front door opening 11 and the lower edge of the rear door opening. A front pillar 12, which is a front pillar of the vehicle interior, is erected on the front side of the front door opening 11. The front door 20 is connected to the side surface of the front pillar 12 via the upper and lower door hinges 21 in a horizontally rotatable state. That is, the front door 20 rotates horizontally around the door hinge 21, so that the front door opening 11 of the vehicle body 10 is opened and closed.
　フロントドア開口部１１の下縁部にあるロッカー３０は、図２、図３等の縦断面図に示すように、車両前後方向に延びる断面略Ｕ字形のロッカーインナー３１とロッカーアウター３２とが車幅方向（左右方向）から合わせられることで筒状に形成されている。また、ロッカー３０内には、内部空間を車幅方向に仕切ることでそのロッカー３０を補強するリインフォース３５が設けられている。また、ロッカーインナー３１の上面には、車両ボディ１０のフロアパネル１４の端縁１４ｆが固定されている。さらに、ロッカーアウター３２の下部側面には、図１、図３等に示すように、フロントドア開口部１１の位置に固定ステップ３７が水平に取付けられている。固定ステップ３７は、図３等に示すように、フロントドア２０が閉じられた状態で、そのフロントドア２０の下端部に設けられたガーニッシュ２３に覆われる。ガーニッシュ２３は省略可能である。また、固定ステップ３７の下側には、可動ステップ装置４０（後記する）のステップ板４３が格納されている。
As shown in the vertical cross-sectional views of FIGS. 2 and 3, the rocker 30 at the lower edge of the front door opening 11 has a rocker inner 31 and a rocker outer 32 having a substantially U-shaped cross section extending in the front-rear direction of the vehicle. It is formed into a tubular shape by being aligned from the width direction (left and right direction). Further, in the locker 30, a reinforcement 35 is provided to reinforce the locker 30 by partitioning the internal space in the vehicle width direction. Further, an edge 14f of the floor panel 14 of the vehicle body 10 is fixed to the upper surface of the rocker inner 31. Further, as shown in FIGS. 1, 3 and the like, a fixing step 37 is horizontally attached to the lower side surface of the rocker outer 32 at the position of the front door opening 11. As shown in FIG. 3 and the like, the fixing step 37 is covered with a garnish 23 provided at the lower end of the front door 20 in a state where the front door 20 is closed. The garnish 23 is optional. Further, a step plate 43 of the movable step device 40 (described later) is stored under the fixed step 37.
＜可動ステップ装置４０の概要について＞
　可動ステップ装置４０は、図２～図４に示すように、車両ボディ１０の床下部に設けられている。可動ステップ装置４０は、フロントドア２０を開く際にステップ板４３を固定ステップ３７の下側から車幅方向外側に突出させ、フロントドア２０を閉じる際にステップ板４３を固定ステップ３７の下側に格納する装置である。可動ステップ装置４０は、図５等に示すように、前記ステップ板４３と、ステップ板４３を水平に出し入れ可能に支持する四節リンク機構４５と、フロントドア２０の回動力をステップ板４３の出し入れ力に変換する変換装置４００とを備えている。ステップ板４３は、前後に長い帯板状に形成されており、水平な状態で平面視においてロッカー３０と平行に保持されている。 <Overview of movable step device 40>
As shown in FIGS. 2 to 4, the movable step device 40 is provided in the lower part of the floor of the vehicle body 10. The movable step device 40 projects the step plate 43 from the lower side of the fixing step 37 to the outside in the vehicle width direction when the front door 20 is opened, and the step plate 43 is moved to the lower side of the fixing step 37 when the front door 20 is closed. It is a storage device. As shown in FIG. 5 and the like, the movable step device 40 includes the step plate 43, a four-bar link mechanism 45 that supports the step plate 43 so as to be horizontally in and out, and the rotational power of the front door 20 to be taken in and out of the step plate 43. It is equipped with a conversion device 400 that converts force into force. The step plate 43 is formed in a long strip shape in the front-rear direction, and is held in a horizontal state in parallel with the rocker 30 in a plan view.
＜四節リンク機構４５について＞
　四節リンク機構４５は、図４、図５に示すように、ロッカー３０の下面に固定されたリンクブラケット４５０と、リンクブラケット４５０に水平回動可能な状態で連結された前支持リンク４５１と後支持リンク４５５とから構成されている。前支持リンク４５１は、図５に示すように、略Ｌ字形に形成されたリンクであり、ステップ板４３の前部を下方から支えた状態で、その前支持リンク４５１の一端がステップ板４３の前部中央に第１連結縦ピン４５１ａにより水平回動可能な状態で連結されている。また、前支持リンク４５１の他端がリンクブラケット４５０の前部右側に第２連結縦ピン４５１ｂにより水平回動可能な状態で連結されている。 <About the four-section link mechanism 45>
As shown in FIGS. 4 and 5, the four-section link mechanism 45 includes a link bracket 450 fixed to the lower surface of the rocker 30, a front support link 451 connected to the link bracket 450 in a horizontally rotatable state, and a rear. It is composed of a support link 455. As shown in FIG. 5, the front support link 451 is a link formed in a substantially L shape, and one end of the front support link 451 is supported by the step plate 43 while the front portion of the step plate 43 is supported from below. It is connected to the center of the front portion by a first connecting vertical pin 451a so as to be horizontally rotatable. Further, the other end of the front support link 451 is connected to the right side of the front portion of the link bracket 450 in a state where it can be horizontally rotated by a second connecting vertical pin 451b.
　後支持リンク４５５は、図５に示すように、帯板状のリンクであり、ステップ板４３の後部を下方から支えた状態で、その後支持リンク４５５の一端がステップ板４３の後部中央に第３連結縦ピン４５５ａにより水平回動可能な状態で連結されている。また、後支持リンク４５５の他端がリンクブラケット４５０の後部右側に第４連結縦ピン４５５ｂにより水平回動可能な状態で連結されている。そして、前支持リンク４５１と後支持リンク４５５とがリンクブラケット４５０側の第２連結縦ピン４５１ｂ、第４連結縦ピン４５５ｂを中心に回動することで、図５、図６に示すように、ステップ板４３はロッカー３０と平行な状態で水平に円弧運動する。これにより、前記ステップ板４３は、固定ステップ３７の下側から車幅方向外側に突出し、あるいは固定ステップ３７の下側に格納されるようになる。 As shown in FIG. 5, the rear support link 455 is a strip-shaped link, in which the rear portion of the step plate 43 is supported from below, and then one end of the support link 455 is at the center of the rear portion of the step plate 43. It is connected in a horizontally rotatable state by a connecting vertical pin 455a. Further, the other end of the rear support link 455 is connected to the rear right side of the link bracket 450 in a horizontally rotatable state by a fourth connecting vertical pin 455b. Then, the front support link 451 and the rear support link 455 rotate around the second connecting vertical pin 451b and the fourth connecting vertical pin 455b on the link bracket 450 side, so that as shown in FIGS. 5 and 6, as shown in FIGS. The step plate 43 makes a horizontal circular motion in parallel with the rocker 30. As a result, the step plate 43 protrudes outward in the vehicle width direction from the lower side of the fixing step 37, or is stored under the fixing step 37.
＜変換装置４００について＞
　変換装置４００は、上記したように、フロントドア２０の回動力をステップ板４３の出し入れ力に変換する装置である。変換装置４００は、図３、及び図５に示すように、ロッカーインナー３１の下面に固定された装置ブラケット４０１と、装置ブラケット４０１に水平回転可能な状態で支持されたドア側歯車４０３、及びステップ側歯車４０５とを備えている。ドア側歯車４０３、及びステップ側歯車４０５は、共に平歯車であり、互いに噛合している。また、変換装置４００は、フロントドア２０とドア側歯車４０３とを連結するドア側リンク４１０と、ステップ側歯車４０５と一体で回動するステップ側リンク４１２と、ステップ側リンク４１２のローラ４１２ｒが係合するステップ板４３側のレール４１５とを備えている。 <About conversion device 400>
As described above, the conversion device 400 is a device that converts the rotational power of the front door 20 into the loading / unloading force of the step plate 43. As shown in FIGS. 3 and 5, the conversion device 400 includes a device bracket 401 fixed to the lower surface of the rocker inner 31, a door side gear 403 supported by the device bracket 401 in a horizontally rotatable state, and a step. It is provided with a side gear 405. The door side gear 403 and the step side gear 405 are both spur gears and mesh with each other. Further, the conversion device 400 is engaged with a door side link 410 that connects the front door 20 and the door side gear 403, a step side link 412 that rotates integrally with the step side gear 405, and a roller 412r of the step side link 412. It is provided with a rail 415 on the side of the matching step plate 43.
　ドア側リンク４１０は、図５、図６に示すように、フロントドア２０が開方向に回動する際にドア側歯車４０３が右回転し、フロントドア２０が閉方向に回動する際にドア側歯車４０３が左回転するように、フロントドア２０とドア側歯車４０３とを連結している。ドア側リンク４１０は、帯板状のリンクであり、一端側がフロントドア２０の回動中心の近傍位置にドア側連結縦ピン４１０ａにより水平回動可能な状態で連結されている。また、ドア側リンク４１０の他端側がドア側歯車４０３の回転中心Ｃ１から偏心した位置に歯車側連結縦ピン４１０ｂにより水平回動可能な状態で連結されている。 As shown in FIGS. 5 and 6, the door side link 410 is a door when the door side gear 403 rotates clockwise when the front door 20 rotates in the opening direction and when the front door 20 rotates in the closing direction. The front door 20 and the door side gear 403 are connected so that the side gear 403 rotates counterclockwise. The door-side link 410 is a strip-shaped link, and one end side thereof is connected to a position near the rotation center of the front door 20 by a door-side connecting vertical pin 410a so as to be horizontally rotatable. Further, the other end side of the door side link 410 is connected to a position eccentric from the rotation center C1 of the door side gear 403 by a gear side connecting vertical pin 410b so as to be horizontally rotatable.
　ドア側リンク４１０は、図２に示すように、ドア側歯車４０３に対して下側から歯車側連結縦ピン４１０ｂによって連結されている。そして、ドア側リンク４１０は、ロッカー３０の下方で水平に保持された状態で、ドア側連結縦ピン４１０ａによりフロントドア２０の下端に設けられたピン支持部２４に連結されている。ここで、ドア側リンク４１０とフロントドア２０、及びドア側歯車４０３との連結位置は、例えば、フロントドア２０のの回動角度が増加する際、ドア側歯車４０３の回転角度が増加するような位置に設定されている。 As shown in FIG. 2, the door side link 410 is connected to the door side gear 403 by a gear side connecting vertical pin 410b from the lower side. The door-side link 410 is connected to the pin support portion 24 provided at the lower end of the front door 20 by the door-side connecting vertical pin 410a while being held horizontally below the locker 30. Here, the connection position between the door side link 410, the front door 20, and the door side gear 403 is such that, for example, when the rotation angle of the front door 20 increases, the rotation angle of the door side gear 403 increases. It is set to the position.
　ドア側歯車４０３と噛合するステップ側歯車４０５は、図５等に示すように、ドア側歯車４０３と所定のギア比で製作されており、ドア側歯車４０３が回転することでドア側歯車４０３と反対方向に所定の角度だけ回転する。ステップ側歯車４０５の回転中心Ｃ２には、ステップ側リンク４１２の基端部が相対回転不能な状態で連結されている。ステップ側リンク４１２の基端部は、図３に示すように、ロッカー３０の下方で水平に保持された状態でステップ側歯車４０５の下面に固定されている。ステップ側リンク４１２の先端部には、ローラ支持ピン４１２ｐが縦向きに連結されており、そのローラ支持ピン４１２ｐの上端部にローラ４１２ｒが同軸に設けられている。そして、前記ローラ４１２ｒがステップ板４３側のレール４１５に沿って転動可能な状態で、そのレール４１５と嵌合している。 As shown in FIG. 5, the step-side gear 405 that meshes with the door-side gear 403 is manufactured in a predetermined gear ratio with the door-side gear 403, and when the door-side gear 403 rotates, it becomes the door-side gear 403. Rotate in the opposite direction by a predetermined angle. The base end portion of the step side link 412 is connected to the rotation center C2 of the step side gear 405 in a state in which relative rotation is not possible. As shown in FIG. 3, the base end portion of the step side link 412 is fixed to the lower surface of the step side gear 405 while being held horizontally below the rocker 30. A roller support pin 412p is vertically connected to the tip of the step side link 412, and a roller 412r is coaxially provided at the upper end of the roller support pin 412p. Then, the roller 412r is fitted to the rail 415 in a state in which the roller 412r can roll along the rail 415 on the step plate 43 side.
　ステップ板４３のレール４１５は、図３に示すように、ステップ板４３の下面に固定されたブラケット４３ｐに支持されている。レール４１５は、断面略逆Ｕ字形に形成されて、ステップ側リンク４１２のローラ４１２ｒが下方から嵌合可能に構成されている。レール４１５は、図５等に示すように、ステップ板４３と平行に前後方向に延びる直線部４１５ｓと、直線部４１５ｓの前側に連続して設けられた円弧部４１５ｅとを備えている。レール４１５の円弧部４１５ｅは、図６、図７に示すように、ステップ側歯車４０５の回転中心Ｃ２を中心に回動するステップ側リンク４１２のローラ４１２ｒの移動軌跡と重なるように構成されている。そして、フロントドア２０が閉じている状態では、図５に示すように、ステップ側リンク４１２は斜め後方に延びた位置にあり、ローラ４１２ｒはレール４１５の直線部４１５ｓの後端位置に保持されている。 As shown in FIG. 3, the rail 415 of the step plate 43 is supported by the bracket 43p fixed to the lower surface of the step plate 43. The rail 415 is formed in a substantially inverted U shape in cross section, and is configured so that the roller 412r of the step side link 412 can be fitted from below. As shown in FIG. 5 and the like, the rail 415 includes a straight portion 415s extending in the front-rear direction in parallel with the step plate 43, and an arc portion 415e continuously provided on the front side of the straight portion 415s. As shown in FIGS. 6 and 7, the arc portion 415e of the rail 415 is configured to overlap the movement locus of the roller 412r of the step side link 412 that rotates around the rotation center C2 of the step side gear 405. .. When the front door 20 is closed, as shown in FIG. 5, the step side link 412 is at a position extending diagonally rearward, and the roller 412r is held at the rear end position of the straight portion 415s of the rail 415. There is.
＜可動ステップ装置４０の動作について＞
　フロントドア２０が閉じている状態では、図３、図５に示すように、ステップ板４３は、固定ステップ３７の下側に格納されている。また、ステップ板４３にブラケット４３ｐを介して取付けられたレール４１５は、図３に示すように、ロッカー３０の下側に格納されている。そして、上記したように、ステップ側リンク４１２は斜め後方に延びた位置にあり（図５参照）、ステップ側リンク４１２の先端のローラ４１２ｒはレール４１５の直線部４１５ｓの後端位置に保持されている。 <About the operation of the movable step device 40>
When the front door 20 is closed, the step plate 43 is stored under the fixing step 37 as shown in FIGS. 3 and 5. Further, the rail 415 attached to the step plate 43 via the bracket 43p is stored under the rocker 30 as shown in FIG. Then, as described above, the step side link 412 is in a position extending diagonally rearward (see FIG. 5), and the roller 412r at the tip of the step side link 412 is held at the rear end position of the straight portion 415s of the rail 415. There is.
　この状態で、フロントドア２０が開方向に回動（図５において左回動）すると、ドア側リンク４１０がフロントドア２０に引っ張られることで、ドア側歯車４０３が、図５において右回転する。これにより、ドア側歯車４０３と噛合しているステップ側歯車４０５が所定角度だけ左回転する。これにより、ステップ側リンク４１２がステップ側歯車４０５と共に回転中心Ｃ２を中心に左回動する。これにより、ステップ側リンク４１２の先端のローラ４１２ｒは、円弧運動しつつステップ板４３に設けられたレール４１５の直線部４１５ｓの後端位置からそのレール４１５の直線部４１５ｓに沿って前方に転動する。 In this state, when the front door 20 rotates in the opening direction (rotates counterclockwise in FIG. 5), the door side link 410 is pulled by the front door 20, and the door side gear 403 rotates clockwise in FIG. As a result, the step side gear 405 meshing with the door side gear 403 rotates counterclockwise by a predetermined angle. As a result, the step-side link 412 rotates counterclockwise around the rotation center C2 together with the step-side gear 405. As a result, the roller 412r at the tip of the step side link 412 rolls forward along the straight portion 415s of the rail 415 from the rear end position of the straight portion 415s of the rail 415 provided on the step plate 43 while moving in an arc. do.
　即ち、ステップ側リンク４１２の回動自由端側で回転中心Ｃ２を中心に円弧運動をするローラ４１２ｒがレール４１５の直線部４１５ｓに沿って前方に転動するため、レール４１５の直線部４１５ｓはローラ４１２ｒから直角方向（右方向）の押圧力を受ける。この結果、レール４１５を介してステップ板４３が右方向（車幅方向外側）に押され、レール４１５、及びステップ板４３は、図６に示すように、四節リンク機構４５の働きでロッカー３０と平行な状態で水平に円弧運動し、固定ステップ３７の下側から突出する。そして、図６に示すように、ステップ側リンク４１２の左回動により、そのステップ側リンク４１２の先端のローラ４１２ｒがレール４１５の直線部４１５ｓの前端位置まで到達した段階で、ステップ板４３の突出量が最大になる。ここで、ステップ板４３の突出量が最大になるときのフロントドア２０の回動角度は、図６に示すように、θであり、フロントドア２０の半開角度よりも小さな値に設定されている。 That is, since the roller 412r that makes an arc around the rotation center C2 on the free rotation end side of the step side link 412 rolls forward along the straight portion 415s of the rail 415, the straight portion 415s of the rail 415 is a roller. It receives a pressing force in the perpendicular direction (right direction) from 412r. As a result, the step plate 43 is pushed to the right (outside in the vehicle width direction) via the rail 415, and the rail 415 and the step plate 43 are pushed by the four-section link mechanism 45 as shown in FIG. It makes a horizontal circular motion in parallel with, and protrudes from the lower side of the fixing step 37. Then, as shown in FIG. 6, when the roller 412r at the tip of the step side link 412 reaches the front end position of the straight portion 415s of the rail 415 by the counterclockwise rotation of the step side link 412, the step plate 43 protrudes. The amount is maximized. Here, the rotation angle of the front door 20 when the protrusion amount of the step plate 43 is maximized is θ as shown in FIG. 6, and is set to a value smaller than the half-open angle of the front door 20. ..
　そして、フロントドア２０が回動角度θを超えてさらに開方向に回動すると、ドア側リンク４１０、ドア側歯車４０３、及びステップ側歯車４０５の働きでステップ側リンク４１２がさらに左回動する。これにより、ステップ側リンク４１２の先端（回動自由端）のローラ４１２ｒがレール４１５の円弧部４１５ｅに沿って前方に転動する。ここで、レール４１５の円弧部４１５ｅは、ステップ側リンク４１２のローラ４１２ｒの移動軌跡と重なるように構成されている。このため、ステップ側リンク４１２のローラ４１２ｒがレール４１５の円弧部４１５ｅに沿って前方に転動することで、ステップ板４３の突出量は最大の状態に保持される。 Then, when the front door 20 further rotates in the opening direction beyond the rotation angle θ, the step side link 412 further rotates counterclockwise by the action of the door side link 410, the door side gear 403, and the step side gear 405. As a result, the roller 412r at the tip (rotational free end) of the step side link 412 rolls forward along the arc portion 415e of the rail 415. Here, the arc portion 415e of the rail 415 is configured to overlap the movement locus of the roller 412r of the step side link 412. Therefore, the roller 412r of the step side link 412 rolls forward along the arc portion 415e of the rail 415, so that the protruding amount of the step plate 43 is maintained in the maximum state.
　そして、フロントドア２０が全開位置まで回動することで、図７に示すように、ステップ側リンク４１２が左回動限位置まで回動し、ステップ側リンク４１２のローラ４１２ｒがレール４１５の円弧部４１５ｅの前端位置に到達する。また、フロントドア２０を全開位置から閉方向に回動（右回動）させると、ドア側リンク４１０がフロントドア２０に押されてドア側歯車４０３を左回転させる。これにより、ステップ側歯車４０５が右回転してステップ側リンク４１２が右回動する。この結果、ステップ側リンク４１２のローラ４１２ｒがレール４１５の円弧部４１５ｅ、及び直線部４１５ｓに沿って後方に転動する。そして、ステップ側リンク４１２のローラ４１２ｒがレール４１５の直線部４１５ｓに沿って後方に転動することで、レール４１５の直線部４１５ｓは左方向（車幅方向内側）に引っ張り力を受ける。これにより、ステップ板４３が固定ステップ３７の下側に格納される。 Then, as the front door 20 rotates to the fully open position, the step side link 412 rotates to the left rotation limit position, and the roller 412r of the step side link 412 rotates to the arc portion of the rail 415 as shown in FIG. It reaches the front end position of 415e. Further, when the front door 20 is rotated (rotated to the right) from the fully open position in the closing direction, the door side link 410 is pushed by the front door 20 to rotate the door side gear 403 counterclockwise. As a result, the step side gear 405 rotates clockwise and the step side link 412 rotates clockwise. As a result, the roller 412r of the step side link 412 rolls backward along the arc portion 415e of the rail 415 and the straight portion 415s. Then, the roller 412r of the step side link 412 rolls backward along the straight portion 415s of the rail 415, so that the straight portion 415s of the rail 415 receives a tensile force in the left direction (inside in the vehicle width direction). As a result, the step plate 43 is stored under the fixing step 37.
＜本実施形態で使用した用語と本発明に係る用語との対応について＞
　前記フロントドア２０が本発明のドアに相当し、フロントドア開口部１１が本発明のドア開口部に相当する。また、フロントドア２０の回動角度θが本発明のドアにおける全開角度よりも小さな所定角度に相当する。さらに、ステップ側リンク４１２のローラ４１２ｒが本発明のステップ側リンクの回動自由端側に相当する。 <Correspondence between the terms used in the present embodiment and the terms according to the present invention>
The front door 20 corresponds to the door of the present invention, and the front door opening 11 corresponds to the door opening of the present invention. Further, the rotation angle θ of the front door 20 corresponds to a predetermined angle smaller than the fully open angle of the door of the present invention. Further, the roller 412r of the step side link 412 corresponds to the free rotation end side of the step side link of the present invention.
＜本実施形態に係る可動ステップ装置４０の長所について＞
　本実施形態に係る可動ステップ装置４０によると、変換装置４００は、フロントドア２０（ドア）が回動角度θ（全開角度よりも小さい所定角度）まで回動することでステップ板４３の突出量を最大にできる。即ち、フロントドア２０が全開になる前に、ステップ板４３を最大限に突出させることができる。このため、フロントドア２０の回動角度に係わらず、乗降性に基づいてステップ板４３のサイズを決定できる。したがって、ステップ板４３のサイズを必要なサイズにできる。また、ステップ板４３の格納スペースもコンパクトにできる。 <Advantages of the movable step device 40 according to this embodiment>
According to the movable step device 40 according to the present embodiment, the conversion device 400 reduces the amount of protrusion of the step plate 43 by rotating the front door 20 (door) to a rotation angle θ (a predetermined angle smaller than the fully open angle). Can be maximized. That is, the step plate 43 can be projected to the maximum before the front door 20 is fully opened. Therefore, the size of the step plate 43 can be determined based on the ease of getting on and off regardless of the rotation angle of the front door 20. Therefore, the size of the step plate 43 can be made into a required size. Further, the storage space of the step plate 43 can be made compact.
［実施形態２］
　次に、図８～図１６に基づいて本開示の実施形態２に係るステップ付の車両について説明する。本実施形態に係るステップ付の車両は、実施形態１に係るステップ付の車両における変換装置４００の構成を一部変更したものである。即ち、実施形態１に係る変換装置４００では、図６に示すように、ステップ板４３の突出量が最大になった後、フロントドア２０がさらに開方向に回動（左回動）すると、ステップ側リンク４１２のローラ４１２ｒがレール４１５の円弧部４１５ｅに沿って前方に転動する例を示した。これに対し、実施形態２に係る変換装置４００ｘでは、図１０等に示すように、欠歯歯車を使用し、ステップ板４３の突出量が最大になった後、フロントドア２０が開方向に回動しても、ドア側歯車４０３とステップ側歯車４０５間で力の伝達が行われないようにしている。これにより、ステップ板４３の突出量が最大になった後は、ステップ側リンク４１２の左回動は禁止される。なお、本実施形態に係る変換装置４００ｘの部材であって、実施形態１に係る変換装置４００の部材と同じ部材については同一符号を付して説明を省略する。 [Embodiment 2]
Next, the vehicle with steps according to the second embodiment of the present disclosure will be described with reference to FIGS. 8 to 16. The vehicle with steps according to the present embodiment is a partially modified version of the conversion device 400 in the vehicle with steps according to the first embodiment. That is, in the conversion device 400 according to the first embodiment, as shown in FIG. 6, when the front door 20 further rotates in the opening direction (left rotation) after the protrusion amount of the step plate 43 is maximized, the step An example is shown in which the roller 412r of the side link 412 rolls forward along the arc portion 415e of the rail 415. On the other hand, in the conversion device 400x according to the second embodiment, as shown in FIG. 10 and the like, a missing tooth gear is used, and after the protrusion amount of the step plate 43 is maximized, the front door 20 is rotated in the opening direction. Even if it moves, the force is not transmitted between the door side gear 403 and the step side gear 405. As a result, after the amount of protrusion of the step plate 43 is maximized, the left rotation of the step side link 412 is prohibited. The members of the conversion device 400x according to the present embodiment and the same members as the members of the conversion device 400 according to the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
　本実施形態の変換装置４００ｘにおけるドア側歯車４０３とステップ側歯車４０５とには、図１０、図１１等に示すように、欠歯歯車が使用されている。即ち、ドア側歯車４０３には、歯が形成されている歯車部４０３ｗと歯が切り欠かれて円弧状の外周面が形成されている円弧部４０３ｆと、その歯車部４０３ｗと円弧部４０３ｆ間に形成された台形状突起部４０３ｄとが設けられている。 As shown in FIGS. 10, 11 and the like, toothless gears are used for the door side gear 403 and the step side gear 405 in the conversion device 400x of the present embodiment. That is, the door side gear 403 has a gear portion 403w in which teeth are formed, an arc portion 403f in which teeth are cut out and an arc-shaped outer peripheral surface is formed, and between the gear portion 403w and the arc portion 403f. The formed trapezoidal protrusion 403d is provided.
　ステップ側歯車４０５には、ドア側歯車４０３の歯車部４０３ｗが噛合可能な歯車部４０５ｗと、ドア側歯車４０３の台形状突起部４０３ｄが嵌合可能な切欠部４０５ｃと、その切欠部４０５ｃの隣の台形状突起部４０５ｄと、円弧部４０５ｆとを備えている。ステップ側歯車４０５の台形状突起部４０５ｄの先端は、図１１、図１３等に示すように、凹円弧形に形成された凹円弧部４０５ｅとなっている。ステップ側歯車４０５の台形状突起部４０５ｄの凹円弧部４０５ｅは、図１６に示すように、ドア側歯車４０３の歯車部４０３ｗとステップ側歯車４０５との噛合が解除された状態で、ドア側歯車４０３の円弧部４０３ｆの外周面に常に接触するように構成されている。即ち、ステップ側歯車４０５の凹円弧部４０５ｅの曲率半径は、ドア側歯車４０３の円弧部４０３ｆの曲率半径と等しい値に設定されている。 The step side gear 405 has a gear portion 405w to which the gear portion 403w of the door side gear 403 can be meshed, a notch portion 405c into which the trapezoidal protrusion 403d of the door side gear 403 can be fitted, and the notch portion 405c next to the notch portion 405c. The trapezoidal protrusion 405d and the arc portion 405f are provided. As shown in FIGS. 11 and 13, the tip of the trapezoidal protrusion 405d of the step side gear 405 is a concave arc portion 405e formed in a concave arc shape. As shown in FIG. 16, the concave arc portion 405e of the trapezoidal protrusion 405d of the step side gear 405 is a door side gear in a state where the gear portion 403w of the door side gear 403 and the step side gear 405 are disengaged. It is configured to always be in contact with the outer peripheral surface of the arc portion 403f of the 403. That is, the radius of curvature of the concave arc portion 405e of the step side gear 405 is set to a value equal to the radius of curvature of the arc portion 403f of the door side gear 403.
　フロントドア２０が全閉状態（図８参照）のときには、図１０、図１１に示すように、ドア側歯車４０３の歯車部４０３ｗとステップ側歯車４０５の歯車部４０５ｗとが噛合している。そして、フロントドア２０が全閉状態（図８参照）から回動角度θの近傍まで回動する際、図１２等に示すように、ドア側歯車４０３が右回転し、ドア側歯車４０３と噛合しているステップ側歯車４０５が所定角度だけ左回転する。これにより、ステップ側歯車４０５のステップ側リンク４１２が左回動し、ステップ側リンク４１２の回動自由端側にあるローラ４１２ｒがレール４１５（直線部４１５ｓ）の後端位置（図８参照）から前記レール４１５に沿って前方に移動する。 When the front door 20 is fully closed (see FIG. 8), as shown in FIGS. 10 and 11, the gear portion 403w of the door side gear 403 and the gear portion 405w of the step side gear 405 are in mesh with each other. Then, when the front door 20 rotates from the fully closed state (see FIG. 8) to the vicinity of the rotation angle θ, the door side gear 403 rotates clockwise and meshes with the door side gear 403 as shown in FIG. The step side gear 405 is rotating counterclockwise by a predetermined angle. As a result, the step side link 412 of the step side gear 405 rotates counterclockwise, and the roller 412r on the free rotation end side of the step side link 412 moves from the rear end position (see FIG. 8) of the rail 415 (straight line portion 415s). It moves forward along the rail 415.
　そして、フロントドア２０が回動角度θの位置の近傍まで到達すると、図１２、図１３に示すように、ドア側歯車４０３の台形状突起部４０３ｄがステップ側歯車４０５の切欠部４０５ｃと嵌合しつつ、ドア側歯車４０３の歯車部４０３ｗとステップ側歯車４０５の歯車部４０５ｗとが噛合が端部を除いて解除される。また、ステップ側リンク４１２が左回動限位置の近傍まで左回動し、ローラ４１２ｒがレール４１５（直線部４１５ｓ）の前端位置近傍に保持される。 Then, when the front door 20 reaches the vicinity of the position of the rotation angle θ, as shown in FIGS. 12 and 13, the trapezoidal protrusion 403d of the door side gear 403 fits with the notch 405c of the step side gear 405. At the same time, the gear portion 403w of the door side gear 403 and the gear portion 405w of the step side gear 405 are disengaged except for the end portion. Further, the step side link 412 rotates counterclockwise to the vicinity of the left rotation limit position, and the roller 412r is held near the front end position of the rail 415 (straight line portion 415s).
　フロントドア２０が回動角度θを超えて開方向に回動すると、図１４に示すように、ドア側歯車４０３が引き続き右回転し、ドア側歯車４０３の歯車部４０３ｗとステップ側歯車４０５の歯車部４０５ｗとの噛合が完全に解除される。さらに、ドア側歯車４０３の台形状突起部４０３ｄがステップ側歯車４０５の切欠部４０５ｃから外れる。これにより、ステップ側歯車４０５の左回転が停止する。即ち、ステップ側リンク４１２は、図９に示すように、先端のローラ４１２ｒがレール４１５の直線部４１５ｓの前端位置まで到達した後、フロントドア２０がさらに開方向に回動しても、左回動限位置に保持される。 When the front door 20 rotates in the opening direction beyond the rotation angle θ, the door side gear 403 continues to rotate clockwise, and the gear portion 403w of the door side gear 403 and the gear of the step side gear 405 continue to rotate. The meshing with the portion 405w is completely released. Further, the trapezoidal protrusion 403d of the door side gear 403 is disengaged from the notch 405c of the step side gear 405. As a result, the counterclockwise rotation of the step side gear 405 is stopped. That is, as shown in FIG. 9, the step side link 412 rotates counterclockwise even if the front door 20 further rotates in the opening direction after the roller 412r at the tip reaches the front end position of the straight portion 415s of the rail 415. It is held in the limit position.
　ステップ側歯車４０５の回転が停止した後、フロントドア２０が開方向に回動してドア側歯車４０３が引き続き右回転すると、図１５、図１６に示すように、ステップ側歯車４０５の台形状突起部４０５ｄの凹円弧部４０５ｅがドア側歯車４０３の円弧部４０３ｆの外周面に当接し、相対的に摺動するようになる。 After the rotation of the step side gear 405 is stopped, when the front door 20 rotates in the opening direction and the door side gear 403 continues to rotate clockwise, as shown in FIGS. 15 and 16, the trapezoidal protrusion of the step side gear 405 The concave arc portion 405e of the portion 405d comes into contact with the outer peripheral surface of the arc portion 403f of the door side gear 403 and slides relatively.
　次に、フロントドア２０が全開位置から閉方向に回動して回動角度θの近傍にまで到達すると、左回転しているドア側歯車４０３の台形状突起部４０３ｄの端部がステップ側歯車４０５の台形状突起部４０５ｄの端部に当接する。これにより、ドア側歯車４０３がステップ側歯車４０５を右回転方向に押圧する。この結果、左回転しているドア側歯車４０３の台形状突起部４０３ｄが右回転を開始したステップ側歯車４０５の切欠部４０５ｃ嵌合し、さらに、ドア側歯車４０３の歯車部４０３ｗがステップ側歯車４０５の歯車部４０５ｗと噛合するようになる。これにより、ステップ側歯車４０５のステップ側リンク４１２が右回動し、ステップ側リンク４１２の回動自由端側にあるローラ４１２ｒがレール４１５の前端位置から前記レール４１５に沿って後方に移動する。 Next, when the front door 20 rotates from the fully open position in the closed direction and reaches the vicinity of the rotation angle θ, the end of the trapezoidal protrusion 403d of the door side gear 403 rotating counterclockwise becomes the step side gear. It abuts on the end of the trapezoidal protrusion 405d of 405. As a result, the door side gear 403 presses the step side gear 405 in the clockwise rotation direction. As a result, the trapezoidal protrusion 403d of the door-side gear 403 rotating counterclockwise fits the notch 405c of the step-side gear 405 that has started clockwise rotation, and further, the gear portion 403w of the door-side gear 403 is fitted with the step-side gear. It comes to mesh with the gear portion 405w of 405. As a result, the step side link 412 of the step side gear 405 rotates clockwise, and the roller 412r on the free rotation end side of the step side link 412 moves rearward along the rail 415 from the front end position of the rail 415.
＜本実施形態で使用した用語と本発明に係る用語との対応について＞
　ドア側歯車４０３の台形状突起部４０３ｄが本発明のドア側歯車の突起部に相当し、ステップ側歯車４０５の台形状突起部４０５ｄがステップ側歯車の突起部に相当する。 <Correspondence between the terms used in the present embodiment and the terms according to the present invention>
The trapezoidal protrusion 403d of the door side gear 403 corresponds to the protrusion of the door side gear of the present invention, and the trapezoidal protrusion 405d of the step side gear 405 corresponds to the protrusion of the step side gear.
＜実施形態２に係る可動ステップ装置４０の長所について＞
　本実施形態に係る可動ステップ装置４０によると、ステップ側リンク４１２は、図９に示すように、先端のローラ４１２ｒがレール４１５の直線部４１５ｓの前端位置まで到達した後、フロントドア２０がさらに開方向に回動しても、左回動限位置に保持される。したがって、実施形態１に係る変換装置４００では必要であったレール４１５の円弧部４１５ｅが本実施形態に係る変換装置４００ｘでは不要になる。このため、ステップ板４３側のレール４１５を小型化できる。 <Advantages of the movable step device 40 according to the second embodiment>
According to the movable step device 40 according to the present embodiment, as shown in FIG. 9, the front door 20 of the step side link 412 is further opened after the roller 412r at the tip reaches the front end position of the straight portion 415s of the rail 415. Even if it rotates in the direction, it is held in the left rotation limit position. Therefore, the arc portion 415e of the rail 415, which was necessary in the conversion device 400 according to the first embodiment, is no longer necessary in the conversion device 400x according to the present embodiment. Therefore, the rail 415 on the step plate 43 side can be miniaturized.
［実施形態３］
　次に、図１７～図３１に基づいて本開示の実施形態３に係るステップ付の車両について説明する。本実施形態に係るステップ付の車両は、実施形態２に係るステップ付の車両における変換装置４００ｘのドア側歯車４０３とステップ側歯車４０５との構成を一部変更したものである。なお、本実施形態に係る変換装置の部材であって、実施形態２に係る変換装置４００ｘの部材と同じ部材については同一符号を付して説明を省略する。 [Embodiment 3]
Next, the vehicle with steps according to the third embodiment of the present disclosure will be described with reference to FIGS. 17 to 31. The vehicle with steps according to the present embodiment is a partially modified configuration of the door side gear 403 and the step side gear 405 of the conversion device 400x in the vehicle with steps according to the second embodiment. The members of the conversion device according to the present embodiment, which are the same as the members of the conversion device 400x according to the second embodiment, are designated by the same reference numerals and the description thereof will be omitted.
＜ドア側歯車４０３について＞
　本実施形態に係るドア側歯車４０３は、図１７、図１８に示すように、実施形態２におけるドア側歯車４０３の台形状突起部４０３ｄを省略し、代わりにカム機構５１０のドア側カム５１４を設けている。さらに、ドア側歯車４０３は、歯車部４０３ｗを挟んで径の異なる二種類の円弧部４０３ｘ，４０３ｙを備えている。即ち、ドア側歯車４０３は、歯車部４０３ｗと、大径円弧部４０３ｘと小径円弧部４０３ｙとを備えている。そして、ドア側歯車４０３の大径円弧部４０３ｘにおける歯車部４０３ｗ側の端部が凸曲面状に形成された押圧面Ｆとなっている。ドア側歯車４０３の押圧面Ｆは、ドア側歯車４０３が右回転する際（フロントドア２０が開かれる際）にステップ側歯車４０５の台形状突起部５００の凹円弧部５０２（後記する）を押圧可能なように構成されている。以後、ドア側歯車４０３の押圧面Ｆを凹円弧押圧面Ｆと呼ぶ。 <About the door side gear 403>
As shown in FIGS. 17 and 18, the door-side gear 403 according to the present embodiment omits the trapezoidal protrusion 403d of the door-side gear 403 in the second embodiment, and instead uses the door-side cam 514 of the cam mechanism 510. It is provided. Further, the door side gear 403 includes two types of arc portions 403x and 403y having different diameters with the gear portion 403w interposed therebetween. That is, the door side gear 403 includes a gear portion 403w, a large-diameter arc portion 403x, and a small-diameter arc portion 403y. The end of the large-diameter arc portion 403x of the door-side gear 403 on the gear portion 403w side is a pressing surface F formed in a convex curved surface shape. The pressing surface F of the door side gear 403 presses the concave arc portion 502 (described later) of the trapezoidal protrusion 500 of the step side gear 405 when the door side gear 403 rotates clockwise (when the front door 20 is opened). It is configured to be possible. Hereinafter, the pressing surface F of the door side gear 403 will be referred to as a concave arc pressing surface F.
　また、ドア側歯車４０３の下面には、図１７に示すように、カム機構５１０のドア側カム５１４が重ねられた状態で固定されている。ドア側カム５１４には、図１８に示すように、ドア側歯車４０３の凹円弧押圧面Ｆと円周方向において反対側に位置する面にステップ側カム押圧面Ｇが形成されている。ドア側カム５１４のステップ側カム押圧面Ｇは、ドア側歯車４０３が左回転する際（フロントドア２０が閉じられる際）にステップ側歯車４０５のステップ側カム５１２（後記する）を押圧可能に構成されている。 Further, as shown in FIG. 17, the door-side cam 514 of the cam mechanism 510 is fixed to the lower surface of the door-side gear 403 in an overlapping state. As shown in FIG. 18, the door-side cam 514 is formed with a step-side cam pressing surface G on a surface located opposite to the concave arc pressing surface F of the door-side gear 403 in the circumferential direction. The step side cam pressing surface G of the door side cam 514 is configured to be able to press the step side cam 512 (described later) of the step side gear 405 when the door side gear 403 rotates counterclockwise (when the front door 20 is closed). Has been done.
＜ステップ側歯車４０５について＞
　本実施形態に係るステップ側歯車４０５は、実施形態２におけるステップ側歯車４０５の切欠部４０５ｃを省略し、その分だけ台形状突起部５００の幅寸法を大ききく設定している。そして、台形状突起部５００の先端の凹円弧部５０２の形状を変更している。また、ステップ側歯車４０５は、上記したカム機構５１０のステップ側カム５１２を備えている。 <About the step side gear 405>
In the step-side gear 405 according to the present embodiment, the notch 405c of the step-side gear 405 in the second embodiment is omitted, and the width dimension of the trapezoidal protrusion 500 is set larger by that amount. Then, the shape of the concave arc portion 502 at the tip of the trapezoidal protrusion 500 is changed. Further, the step side gear 405 includes the step side cam 512 of the cam mechanism 510 described above.
　即ち、ステップ側歯車４０５には、図１７、図１８に示すように、歯車部４０５ｗと台形状突起部５００と円弧部４０５ｆとが円周方向に順番に設けられている。台形状突起部５００は、図１９に示すように、平面形状が略逆台形状に形成されている。そして、台形状突起部５００の先端の凹円弧部５０２がドア側歯車４０３の大径円弧部４０３ｘの外周面に当接可能に構成されている。台形状突起部５００の先端の凹円弧部５０２の曲率半径はドア側歯車４０３の大径円弧部４０３ｘの曲率半径よりも十分に小さな値に設定されている。これにより、ドア側歯車４０３の大径円弧部４０３ｘの外周面に対してステップ側歯車４０５の台形状突起部５００の凹円弧部５０２が、図１９に示すように、径方向からバランス良く当接した状態で、凹円弧部５０２は大径円弧部４０３ｘに対してＡ点とＢ点とで点接触するようになる。 That is, as shown in FIGS. 17 and 18, the step side gear 405 is provided with the gear portion 405w, the trapezoidal protrusion portion 500, and the arc portion 405f in order in the circumferential direction. As shown in FIG. 19, the trapezoidal protrusion 500 has a substantially inverted trapezoidal planar shape. The concave arc portion 502 at the tip of the trapezoidal protrusion 500 is configured to be able to come into contact with the outer peripheral surface of the large diameter arc portion 403x of the door side gear 403. The radius of curvature of the concave arc portion 502 at the tip of the trapezoidal protrusion 500 is set to a value sufficiently smaller than the radius of curvature of the large diameter arc portion 403x of the door side gear 403. As a result, as shown in FIG. 19, the concave arc portion 502 of the trapezoidal protrusion 500 of the step side gear 405 abuts on the outer peripheral surface of the large diameter arc portion 403x of the door side gear 403 in a well-balanced manner from the radial direction. In this state, the concave arc portion 502 comes into point contact with the large diameter arc portion 403x at points A and B.
　また、ステップ側歯車４０５の下面には、図１７、図１８に示すように、台形状突起部５００の凹円弧部５０２の中央位置の下側から半径方向外側に突出するカム機構５１０のステップ側カム５１２が設けられている。ステップ側カム５１２は、ステップ側リンク４１２の基端部側に形成されており、ステップ側リンク４１２を介してステップ側歯車４０５の下面に固定されている。 Further, on the lower surface of the step side gear 405, as shown in FIGS. 17 and 18, the step side of the cam mechanism 510 protruding outward in the radial direction from the lower side of the center position of the concave arc portion 502 of the trapezoidal protrusion 500. A cam 512 is provided. The step-side cam 512 is formed on the base end side of the step-side link 412, and is fixed to the lower surface of the step-side gear 405 via the step-side link 412.
＜本実施形態に係る変換装置の動作について＞
　フロントドア２０が全閉状態（図８参照）のときには、図２０、図２１に示すように、ドア側歯車４０３の歯車部４０３ｗとステップ側歯車４０５の歯車部４０５ｗとが噛合している。そして、フロントドア２０が全閉状態（図８参照）から回動角度θの近傍まで回動する際、ドア側歯車４０３が右回転し、ドア側歯車４０３と噛合しているステップ側歯車４０５が所定角度だけ左回転する。これにより、ステップ側歯車４０５のステップ側リンク４１２が左回動し、ステップ側リンク４１２の回動自由端側にあるローラ４１２ｒ（図８参照）がレール４１５（直線部４１５ｓ）の後端位置から前記レール４１５に沿って前方に移動する。 <About the operation of the conversion device according to this embodiment>
When the front door 20 is in the fully closed state (see FIG. 8), as shown in FIGS. 20 and 21, the gear portion 403w of the door side gear 403 and the gear portion 405w of the step side gear 405 are in mesh with each other. Then, when the front door 20 rotates from the fully closed state (see FIG. 8) to the vicinity of the rotation angle θ, the door side gear 403 rotates clockwise, and the step side gear 405 meshing with the door side gear 403 Rotate counterclockwise by a predetermined angle. As a result, the step side link 412 of the step side gear 405 rotates counterclockwise, and the roller 412r (see FIG. 8) on the free rotation end side of the step side link 412 moves from the rear end position of the rail 415 (straight line portion 415s). It moves forward along the rail 415.
　そして、フロントドア２０が回動角度θの近傍の位置まで到達すると、図２２、図２３に示すように、ドア側歯車４０３の大径円弧部４０３ｘの端部の凹円弧押圧面Ｆがステップ側歯車４０５の台形状突起部５００の凹円弧部５０２を押圧する。即ち、右回転するドア側歯車４０３の凹円弧押圧面Ｆがステップ側歯車４０５の凹円弧部５０２を押圧することで、そのステップ側歯車４０５が左回転する。これにより、ドア側歯車４０３の歯車部４０３ｗとステップ側歯車４０５の歯車部４０５ｗとの噛合が解除される。この状態で、ステップ側歯車４０５のステップ側リンク４１２が左回動限位置に保持され、ローラ４１２ｒがレール４１５（直線部４１５ｓ）の前端位置に保持される（図９参照）。 Then, when the front door 20 reaches a position near the rotation angle θ, as shown in FIGS. 22 and 23, the concave arc pressing surface F at the end of the large diameter arc portion 403x of the door side gear 403 is on the step side. The concave arc portion 502 of the trapezoidal protrusion 500 of the gear 405 is pressed. That is, when the concave arc pressing surface F of the door side gear 403 that rotates clockwise presses the concave arc portion 502 of the step side gear 405, the step side gear 405 rotates counterclockwise. As a result, the meshing between the gear portion 403w of the door side gear 403 and the gear portion 405w of the step side gear 405 is released. In this state, the step side link 412 of the step side gear 405 is held at the left rotation limit position, and the roller 412r is held at the front end position of the rail 415 (straight line portion 415s) (see FIG. 9).
　フロントドア２０が回動角度θを超えて開方向に回動すると、図２４～２７に示すように、ドア側歯車４０３が引き続き右回転し、ステップ側歯車４０５は回転停止状態に保持される。これにより、ステップ側リンク４１２は、図９に示すように、先端のローラ４１２ｒがレール４１５の直線部４１５ｓの前端位置まで到達した後、フロントドア２０がさらに開方向に回動しても、左回動限位置に保持される。 When the front door 20 rotates in the opening direction beyond the rotation angle θ, the door side gear 403 continues to rotate clockwise and the step side gear 405 is held in the rotation stopped state as shown in FIGS. 24 to 27. As a result, as shown in FIG. 9, the step side link 412 is left even if the front door 20 further rotates in the opening direction after the roller 412r at the tip reaches the front end position of the straight portion 415s of the rail 415. It is held in the rotation limit position.
　フロントドア２０が回動角度θを超えて開方向に回動している状態では、図２５、図２７に示すように、ステップ側歯車４０５の台形状突起部５００の凹円弧部５０２は、ドア側歯車４０３の大径円弧部４０３ｘの外周面に対してＢ点で点接触する。このように、右回転しているドア側歯車４０３の大径円弧部４０３ｘの外周面に対してステップ側歯車４０５の台形状突起部５００の凹円弧部５０２がＢ点で点接触する構成のため、大径円弧部４０３ｘの外周面に対する凹円弧部５０２の摺動抵抗を小さくできる。このため、埃や異物の付着による摺動抵抗の上昇に起因する動作不良を抑制できる。また、ステップ側歯車４０５の台形状突起部５００の幅寸法を実施形態２における台形状突起部４０５ｄの幅寸法よりも十分に大きく設定している。このため、摺動抵抗の上昇に伴って台形状突起部４０５ｄが傾き、その台形状突起部４０５ｄの角部が大径円弧部４０３ｘの外周面に食い込むような不具合も防止できる。 In a state where the front door 20 is rotating in the opening direction beyond the rotation angle θ, as shown in FIGS. 25 and 27, the concave arc portion 502 of the trapezoidal protrusion 500 of the step side gear 405 is a door. Point contact is made at point B with respect to the outer peripheral surface of the large-diameter arc portion 403x of the side gear 403. In this way, the concave arc portion 502 of the trapezoidal protrusion 500 of the step side gear 405 makes point contact with the outer peripheral surface of the large diameter arc portion 403x of the door side gear 403 rotating clockwise at the point B. , The sliding resistance of the concave arc portion 502 with respect to the outer peripheral surface of the large diameter arc portion 403x can be reduced. Therefore, it is possible to suppress a malfunction caused by an increase in sliding resistance due to adhesion of dust or foreign matter. Further, the width dimension of the trapezoidal protrusion 500 of the step side gear 405 is set sufficiently larger than the width dimension of the trapezoidal protrusion 405d in the second embodiment. Therefore, it is possible to prevent a problem that the trapezoidal protrusion 405d is tilted as the sliding resistance increases and the corner portion of the trapezoidal protrusion 405d bites into the outer peripheral surface of the large-diameter arc portion 403x.
　次に、フロントドア２０が全開位置から閉方向に回動する場合、図２８、図２９に示すように、ステップ側歯車４０５の台形状突起部５００の凹円弧部５０２は、左回転しているドア側歯車４０３の大径円弧部４０３ｘの外周面に対してＡ点で点接触するようになる。そして、フロントドア２０が回動角度θの近傍にまで到達すると、図２８、図２９に示すように、左回転しているドア側歯車４０３のドア側カム５１４のステップ側カム押圧面Ｇがステップ側歯車４０５のステップ側カム５１２を押圧する。これにより、ステップ側歯車４０５が、図３０、図３１に示すように、右回転を開始し、左回転しているドア側歯車４０３の歯車部４０３ｗに対してステップ側歯車４０５の歯車部４０５ｗが噛合するようになる。これにより、ステップ側歯車４０５のステップ側リンク４１２が右回動し、ステップ側リンク４１２の回動自由端側にあるローラ４１２ｒがレール４１５の前端位置から前記レール４１５に沿って後方に移動する。 Next, when the front door 20 rotates from the fully open position in the closing direction, the concave arc portion 502 of the trapezoidal protrusion 500 of the step side gear 405 rotates counterclockwise as shown in FIGS. 28 and 29. The door side gear 403 comes into point contact with the outer peripheral surface of the large-diameter arc portion 403x at point A. Then, when the front door 20 reaches the vicinity of the rotation angle θ, as shown in FIGS. 28 and 29, the step side cam pressing surface G of the door side cam 514 of the door side gear 403 rotating counterclockwise steps. The step side cam 512 of the side gear 405 is pressed. As a result, as shown in FIGS. 30 and 31, the step-side gear 405 starts rotating clockwise, and the gear portion 405w of the step-side gear 405 changes with respect to the gear portion 403w of the door-side gear 403 rotating counterclockwise. It will mesh. As a result, the step side link 412 of the step side gear 405 rotates clockwise, and the roller 412r on the free rotation end side of the step side link 412 moves rearward along the rail 415 from the front end position of the rail 415.
＜本実施形態で使用した用語と本発明に係る用語との対応について＞
　ステップ側歯車４０５の台形状突起部５００が本発明におけるステップ側歯車の突起部に相当する。また、ドア側歯車４０３の大径円弧部４０３ｘが本発明におけるドア側歯車の円弧部に相当する。 <Correspondence between the terms used in the present embodiment and the terms according to the present invention>
The trapezoidal protrusion 500 of the step side gear 405 corresponds to the protrusion of the step side gear in the present invention. Further, the large-diameter arc portion 403x of the door side gear 403 corresponds to the arc portion of the door side gear in the present invention.
＜実施形態３に係る可動ステップ装置４０の長所について＞
　本実施形態に係る可動ステップ装置４０によると、回転しているドア側歯車４０３の大径円弧部４０３ｘの外周面に対してステップ側歯車４０５の台形状突起部５００の凹円弧部５０２がＡ点、あるいはＢ点で点接触する構成のため、大径円弧部４０３ｘの外周面に対する凹円弧部５０２の摺動抵抗を小さくできる。このため、埃や異物の付着による摺動抵抗の上昇に起因する動作不良を抑制できる。また、ステップ側歯車４０５の台形状突起部５００の幅寸法を実施形態２における台形状突起部４０５ｄの幅寸法よりも十分に大きく設定している。このため、摺動抵抗の上昇に伴って台形状突起部４０５ｄが傾き、その台形状突起部４０５ｄの角部が大径円弧部４０３ｘの外周面に食い込むような不具合も防止できる。 <Advantages of the movable step device 40 according to the third embodiment>
According to the movable step device 40 according to the present embodiment, the concave arc portion 502 of the trapezoidal protrusion 500 of the step side gear 405 is point A with respect to the outer peripheral surface of the large diameter arc portion 403x of the rotating door side gear 403. Or, because of the configuration of point contact at point B, the sliding resistance of the concave arc portion 502 with respect to the outer peripheral surface of the large diameter arc portion 403x can be reduced. Therefore, it is possible to suppress a malfunction caused by an increase in sliding resistance due to adhesion of dust or foreign matter. Further, the width dimension of the trapezoidal protrusion 500 of the step side gear 405 is set sufficiently larger than the width dimension of the trapezoidal protrusion 405d in the second embodiment. Therefore, it is possible to prevent a problem that the trapezoidal protrusion 405d is tilted as the sliding resistance increases and the corner portion of the trapezoidal protrusion 405d bites into the outer peripheral surface of the large-diameter arc portion 403x.
［変更例］
　本開示は上記実施形態に限定されるものではなく、本発明を逸脱しない範囲における変更が可能である。例えば、実施形態１，２に係る可動ステップ装置４０では、ステップ板４３を四節リンク機構４５により水平に出し入れ可能に支持する例を示した。しかし、四節リンク機構４５の代わりに、例えば、一対の平行レールと摺動子等を使用して、ステップ板４３を水平に出し入れ可能に支持する構成でも良い。また、実施形態１，２では、車両ボディ１０のフロントドア開口部１１に可動ステップ装置４０を設け、フロントドア２０を開閉する力でステップ板４３を出し入れする例を示した。しかし、車両ボディ１０のリヤドア開口部に可動ステップ装置４０を設け、リヤドアを開閉する力でステップ板４３を出し入れする構成でも可能である。また、実施形態３に係る可動ステップ装置４０では、図１９等に示すように、ステップ側歯車４０５の凹円弧部５０２の曲率半径をドア側歯車４０３の大径円弧部４０３ｘの曲率半径よりも十分に小さな値に設定し、前記凹円弧部５０２を前記大径円弧部４０３ｘに対してＡ点とＢ点とで点接触可能に構成した。しかし、ステップ側歯車４０５の凹円弧部５０２の曲率半径をドア側歯車４０３の大径円弧部４０３ｘの曲率半径と同じ値に設定して、凹円弧部５０２の中央に球状、あるいは凸円弧状の突起を設け、その突起を前記大径円弧部４０３ｘに対して一点で点接触させる構成でも可能である。 [Change example]
The present disclosure is not limited to the above embodiment, and changes can be made without departing from the present invention. For example, in the movable step device 40 according to the first and second embodiments, an example is shown in which the step plate 43 is supported by the four-node link mechanism 45 so as to be horizontally put in and out. However, instead of the four-bar link mechanism 45, for example, a pair of parallel rails and a slider may be used to support the step plate 43 so that it can be horizontally moved in and out. Further, in the first and second embodiments, an example is shown in which a movable step device 40 is provided in the front door opening 11 of the vehicle body 10 and the step plate 43 is moved in and out by a force for opening and closing the front door 20. However, it is also possible to provide a movable step device 40 at the rear door opening of the vehicle body 10 and move the step plate 43 in and out by a force for opening and closing the rear door. Further, in the movable step device 40 according to the third embodiment, as shown in FIG. 19 and the like, the radius of curvature of the concave arc portion 502 of the step side gear 405 is sufficiently larger than the radius of curvature of the large diameter arc portion 403x of the door side gear 403. The concave arc portion 502 is configured to be able to make point contact with the large diameter arc portion 403x at points A and B. However, the radius of curvature of the concave arc portion 502 of the step side gear 405 is set to the same value as the radius of curvature of the large diameter arc portion 403x of the door side gear 403, and a spherical or convex arc shape is formed in the center of the concave arc portion 502. It is also possible to provide a protrusion and bring the protrusion into point contact with the large-diameter arc portion 403x at one point.
　ここで、詳細な説明は、本教示の様々な態様を作成、使用および／または実施するために、当業者に教示するものであって、本発明の範囲を限定するものではない。さらに、上述した各付加的な特徴および教示は、ステップ付の車両を提供するため、別々にまたは他の特徴および教示と一緒に適用および／または使用され得る。

                                                                                   Here, the detailed description is intended to teach one of ordinary skill in the art in order to create, use and / or carry out various aspects of the present teaching, and does not limit the scope of the present invention. In addition, each of the additional features and teachings described above may be applied and / or used separately or in combination with other features and teachings to provide a stepped vehicle.

Claims (8)

  1. 　水平回動させることで車両ボディのドア開口部を開閉するドアと、前記ドア開口部の下側で水平に出し入れ可能なステップ板とを備えるステップ付の車両であって、
    　前記ドアの回動力を前記ステップ板の出し入れ力に変換する変換装置を備えており、
    　前記変換装置は、前記ドアが全開角度よりも小さい所定角度まで回動することで前記ステップ板の突出量を最大にできるように構成されているステップ付の車両。     A vehicle with a step having a door that opens and closes the door opening of the vehicle body by horizontally rotating, and a step plate that can be horizontally put in and taken out under the door opening.
    It is equipped with a conversion device that converts the rotational power of the door into the insertion / removal force of the step plate.
    The conversion device is a vehicle with a step configured so that the amount of protrusion of the step plate can be maximized by rotating the door to a predetermined angle smaller than the fully open angle.
  2. 　請求項１に記載のステップ付の車両であって、
    　前記変換装置は、前記車両ボディに設けられたドア側歯車と、前記ドアの回動力を前記ドア側歯車に伝達するドア側リンクと、前記車両ボディに設けられ、前記ドア側歯車と噛合して、そのドア側歯車の回転力を前記ステップ板に伝えるステップ側歯車とを備えているステップ付の車両。     The vehicle with a step according to claim 1.
    The conversion device is provided on the vehicle body, meshes with the door side gear, the door side link for transmitting the rotational power of the door to the door side gear, and the door side gear provided on the vehicle body. , A vehicle with a step equipped with a step-side gear that transmits the rotational force of the door-side gear to the step plate.
  3. 　請求項２に記載のステップ付の車両であって、
    　前記変換装置は、前記ステップ側歯車と共に回動するステップ側リンクと、前記ステップ板に設けられており、前記ステップ側リンクの回動自由端側をガイドする直線状のレールとを備えており、
    　前記ステップ側リンクの回動により、そのステップ側リンクの回動自由端側が円弧運動をしつつ前記レールに沿って移動することで、前記レールと前記ステップ板とが車幅方向に移動可能な構成であるステップ付の車両。     The vehicle with a step according to claim 2.
    The conversion device includes a step-side link that rotates together with the step-side gear, and a linear rail that is provided on the step plate and guides the free-rotating end side of the step-side link.
    By rotating the step-side link, the free-rotating end side of the step-side link moves along the rail while performing an arc motion, so that the rail and the step plate can move in the vehicle width direction. A vehicle with a step that is.
  4. 　請求項３に記載のステップ付の車両であって、
    　前記レールには、直線部と、ステップ側リンクの回動自由端側の移動軌跡に重なる円弧部とが連続して設けられているステップ付の車両。     The vehicle with a step according to claim 3.
    A vehicle with a step in which a straight portion and an arc portion overlapping the movement locus on the free-rotating end side of the step-side link are continuously provided on the rail.
  5. 　請求項３に記載のステップ付の車両であって、
    　前記ドア側歯車と前記ステップ側歯車とは、前記ドアが所定角度を超えて回動する際は、歯車の噛合が解除されるように構成されているステップ付の車両。     The vehicle with a step according to claim 3.
    The door-side gear and the step-side gear are vehicles with steps configured so that the gears are disengaged when the door rotates beyond a predetermined angle.
  6. 　請求項５に記載のステップ付の車両であって、
    　前記ドア側歯車には、歯が形成されている歯車部と、円弧状の外周面が形成されている円弧部と、前記歯車部と前記円弧部間に設けられた突起部とを備えており、
    　前記ステップ側歯車には、歯が形成されている歯車部と、円弧状の外周面が形成されている円弧部と、前記歯車部と前記円弧部間に設けられた突起部とを備えており、
    　前記ドアが所定角度を超えて回動し、前記ドア側歯車の歯車部と前記ステップ側歯車の歯車部との噛合が解除された状態では、前記ステップ側歯車の突起部の先端が常に前記ドア側歯車の円弧部に対して接触しており、
    　前記ドアが全開角度から所定角度まで閉じられる過程で、前記ドアの回動力を受ける前記ドア側歯車の突起部が前記ステップ側歯車の突起部を押圧することで、前記ステップ側歯車の歯車部が前記ドア側歯車の歯車部との噛合を開始するステップ付の車両。     The vehicle with a step according to claim 5.
    The door-side gear includes a gear portion on which teeth are formed, an arc portion on which an arc-shaped outer peripheral surface is formed, and a protrusion provided between the gear portion and the arc portion. ,
    The step-side gear includes a gear portion on which teeth are formed, an arc portion on which an arc-shaped outer peripheral surface is formed, and a protrusion provided between the gear portion and the arc portion. ,
    When the door rotates beyond a predetermined angle and the gear portion of the door side gear and the gear portion of the step side gear are disengaged, the tip of the protrusion of the step side gear is always the door. It is in contact with the arc of the side gear and
    In the process of closing the door from the fully open angle to a predetermined angle, the protrusion of the door-side gear that receives the rotational power of the door presses the protrusion of the step-side gear, so that the gear portion of the step-side gear is released. A vehicle with a step that starts meshing with the gear portion of the door side gear.
  7. 　請求項５に記載のステップ付の車両であって、
    　前記ドア側歯車には、歯が形成されている歯車部と、円弧状の外周面が形成されている円弧部とを備えており、
    　前記ステップ側歯車には、歯が形成されている歯車部と、円弧状の外周面が形成されている円弧部と、前記歯車部と前記円弧部間に設けられた突起部とを備えており、
    　前記ドアが所定角度を超えて回動し、前記ドア側歯車の歯車部と前記ステップ側歯車の歯車部との噛合が解除された状態では、前記ステップ側歯車の突起部の先端が常に前記ドア側歯車の円弧部に対して円周方向において点接触しているステップ付の車両。     The vehicle with a step according to claim 5.
    The door-side gear includes a gear portion on which teeth are formed and an arc portion on which an arc-shaped outer peripheral surface is formed.
    The step-side gear includes a gear portion on which teeth are formed, an arc portion on which an arc-shaped outer peripheral surface is formed, and a protrusion provided between the gear portion and the arc portion. ,
    When the door rotates beyond a predetermined angle and the gear portion of the door side gear and the gear portion of the step side gear are disengaged, the tip of the protrusion of the step side gear is always the door. A vehicle with a step that makes point contact with the arc of the side gear in the circumferential direction.
  8. 　請求項７に記載のステップ付の車両であって、
    　前記ドア側歯車と前記ステップ側歯車間には、前記ドアが全開角度から所定角度まで閉じられる過程で、前記ドア側歯車の回転力を前記ステップ側歯車に伝達し、前記ステップ側歯車の歯車部を前記ドア側歯車の歯車部と噛合する位置まで回動させるカム機構が設けられているステップ付の車両。
                                                                                         The vehicle with a step according to claim 7.
    Between the door side gear and the step side gear, the rotational force of the door side gear is transmitted to the step side gear in the process of closing the door from the fully open angle to a predetermined angle, and the gear portion of the step side gear A vehicle with a step provided with a cam mechanism that rotates the door side gear to a position where it meshes with the gear portion of the door side gear.
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CN113859286A (en) * 2021-11-11 2021-12-31 山东交通学院 Automatic pedal device of rail transit door system and using method thereof

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JPS63194048U (en) * 1987-06-01 1988-12-14
JPH0168257U (en) * 1987-10-23 1989-05-02
CN210062838U (en) * 2019-03-28 2020-02-14 李玉柱 Hidden automobile pedal

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Publication number Priority date Publication date Assignee Title
JPS63194048U (en) * 1987-06-01 1988-12-14
JPH0168257U (en) * 1987-10-23 1989-05-02
CN210062838U (en) * 2019-03-28 2020-02-14 李玉柱 Hidden automobile pedal

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113859286A (en) * 2021-11-11 2021-12-31 山东交通学院 Automatic pedal device of rail transit door system and using method thereof
CN113859286B (en) * 2021-11-11 2023-05-02 山东交通学院 Automatic pedal device of rail transit door system and application method thereof

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