JP7322773B2 - vehicle with steps - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vehicle with steps, which includes a door that opens and closes a door opening of a vehicle body by horizontally turning, and a step plate that can be horizontally inserted and removed from the lower side of the door opening.

Japanese Patent Laid-Open No. 2002-200000 describes a technique related to a conventional vehicle with a step. As shown in FIG. 10, the stepped vehicle of Patent Document 1 includes a fan-shaped step plate 102, and one side corresponding to the radius of the fan-shaped step plate 102 is attached to the lower edge of the door 100. . Further, an arc-shaped guide rail (not shown) is provided on the underfloor side of the vehicle body 103 to guide the portion corresponding to the sector-shaped arc of the step plate 102 . As a result, the step plate 102 can be automatically pulled out from under the vehicle body 103 by rotating the door 100 in the opening direction.

JP-A-2004-136718

However, since the step plate 102 is attached to the door 100, if the rotation angle of the door 100 changes, the amount of withdrawal (protrusion) of the step plate 102 also changes. That is, when the rotation angle of the door 100 changes unexpectedly, the amount of protrusion of the step plate 102 also changes unexpectedly.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and the problem to be solved by the present invention is to stably maintain the rotation angle of the door and the amount of protrusion of the step plate. is.

The above problems are solved by each invention. A first invention is a vehicle with a step, comprising a door that opens and closes a door opening of a vehicle body by horizontally rotating the door, and a step plate that can be horizontally taken in and out under the door opening, A conversion device is provided for converting the turning force of the door into a force for withdrawing the step plate. A door holding mechanism is provided to hold the door at an angular position, and when the door is rotated from the closed position to a predetermined angle, the conversion device moves the step plate to the extended position where the amount of protrusion from the retracted position is maximized. and a portion constituting a non-driving state for holding the step plate at the unfolded position when the door is rotated beyond a predetermined angle, wherein the non-driving The door holding mechanism is provided in the portion that constitutes the state, and the conversion device is provided on the step side link that rotates in conjunction with the rotation of the door, and on the step plate. A rail for guiding the free rotation end side of the link is provided, and the portion constituting the driving state is a portion of the rail that receives a pressing force in the vehicle width direction from the free rotation end side of the step-side link. .

According to the present invention, the step plate can be taken in and out by rotating the door with the converting device. Further, since the conversion device is provided with a door holding mechanism, the door can be held at that position when the door is rotated to a predetermined angular position. As a result, the amount of protrusion of the step plate can be maintained as it is. That is, there is no problem such as unintentional movement of the door and step plate.
Further, the conversion device includes a portion that constitutes a driving state in which the step plate is moved to the unfolded position, and a portion that constitutes a non-driving state when the door rotates beyond a predetermined angle. The door holding mechanism is provided in the portion that constitutes the state. Therefore, the step plate can be stably held at the unfolded position.

A second aspect of the invention is a vehicle with a step, comprising: a door that opens and closes a door opening of a vehicle body by horizontally turning; A conversion device is provided for converting the turning force of the door into a force for withdrawing the step plate. A door holding mechanism is provided to hold the door at an angular position, and when the door is rotated from the closed position to a predetermined angle, the conversion device moves the step plate to the extended position where the amount of protrusion from the retracted position is maximized. and a part constituting a non-driving state of holding the step plate in the unfolded position when the door is rotated beyond a predetermined angle, wherein the non-driving The door holding mechanism is provided in the portion that constitutes the state, and the conversion device is provided on the step side link that rotates in conjunction with the rotation of the door, and on the step plate. A rail for guiding the rotation free end side of the link is provided, and the rail includes a linear portion that constitutes the driving state and a portion that constitutes the non-driving state for the step-side link. A circular arc portion overlapping the movement locus of the free rotation end side is continuously provided, and the free rotation end side of the step-side link moves along the linear portion of the rail while making an arc motion. The rail and the step plate move in the vehicle width direction.

According to the third aspect of the invention , the door holding mechanism is provided on the wall surface of the arc portion of the rail, and when the door is rotated to a predetermined angle, the step-side link is held at the rotation free end side. It is a fitting portion into which the roller is fitted. That is, when the roller is fitted with the fitting portion of the arc portion of the rail, the rotation of the step-side link is stopped, and the door and the step plate are held at that position.

According to the fourth invention , the roller of the step-side link is configured to be easily deformed with respect to the rail, and the step-side link engages the roller with the fitting portion of the rail with a turning force of a certain level or more. By rotating in a direction to release the roller, the roller is deformed and the fitting with the fitting portion of the rail is released. Therefore, by applying a turning force of a certain amount or more to the door, the door held at a predetermined angular position can be turned in the opening/closing direction, and the step plate can be retracted.

According to the present invention, the rotation angle of the door and the amount of protrusion of the step plate can be stably maintained.

1 is a schematic perspective view of a door opening of a vehicle with a step according to Embodiment 1 of the present invention, viewed from the interior side; FIG. FIG. 6 is a vertical cross-sectional view (cross-sectional view taken along the line II-II in FIG. 5) showing the underfloor of the vehicle; FIG. 6 is a vertical cross-sectional view (cross-sectional view taken along the line III-III in FIG. 5) showing the underfloor of the vehicle; FIG. 6 is a vertical cross-sectional view (cross-sectional view taken along line IV-IV in FIG. 5) showing the underfloor of the vehicle. Fig. 2 is an overall plan view showing the door, conversion device, and step plate (door closed, step plate retracted state); It is an overall plan view showing the door, the conversion device, and the step plate (in the middle of opening the door, step plate deployed state). Fig. 2 is an overall plan view showing the door, conversion device, and step plate (door fully open, step plate deployed state); 4 is an enlarged plan view of an arc portion of a rail provided on the step plate; FIG. FIG. 9 is an enlarged view in the direction of arrow IX of FIG. 8; and FIG. 11 is a schematic perspective view showing a conventional vehicle with steps.

[Embodiment 1]
A vehicle with steps according to a first embodiment of the present invention will be described below with reference to FIGS. 1 to 9. FIG. A vehicle with a step according to the present embodiment is, for example, a vehicle provided with a movable step at the position of the front door opening of the vehicle body. Here, front, rear, left, right, and up and down shown in the drawing correspond to front, rear, left, right, and up and down of the vehicle with steps according to the present embodiment.

<Overview of Vehicle Body 10>
As shown in FIG. 1, a side surface of the vehicle body 10 is formed with a front door opening 11 corresponding to the front seats and a rear door opening (not shown) corresponding to the central portion and rear seats. . Lockers 30, which are tubular frames extending in the vehicle front-rear direction, are provided at the lower edges of the front door opening 11 and the rear door opening. A front pillar 12, which is a front support for the vehicle compartment, is erected in front of the front door opening 11. As shown in FIG. A front door 20 is horizontally rotatably connected to the side surface of the front pillar 12 via upper and lower door hinges 21 . That is, the front door opening 11 of the vehicle body 10 is opened and closed by horizontally rotating the front door 20 about the door hinge 21 .

2 and 3, the locker 30 at the lower edge of the front door opening 11 includes an inner locker 31 and an outer locker 32 extending in the longitudinal direction of the vehicle and having a substantially U-shaped cross section. It is formed in a cylindrical shape by being aligned in the width direction (horizontal direction). Further, in the locker 30, a reinforcement 35 is provided to reinforce the locker 30 by partitioning the inner space in the vehicle width direction. An edge 14 f of the floor panel 14 of the vehicle body 10 is fixed to the upper surface of the inner locker 31 . Further, a fixed step 37 is horizontally attached to the lower side surface of the outer locker 32 at the position of the front door opening 11 as shown in FIGS. The fixed step 37 is covered with a garnish 23 provided at the lower end of the front door 20 when the front door 20 is closed, as shown in FIG. 3 and the like. A step plate 43 of a movable step device 40 (described later) is stored below the fixed step 37 . Note that the fixing step 37 and the garnish 23 can be omitted.

<Overview of movable step device 40>
The movable step device 40 is provided under the floor of the vehicle body 10, as shown in FIGS. The movable step device 40 projects the step plate 43 outward in the vehicle width direction from the lower side of the fixed step 37 when the front door 20 is opened, and moves the step plate 43 to the lower side of the fixed step 37 when the front door 20 is closed. It is a storage device. The movable step device 40 includes, as shown in FIG. and a conversion device 400 for converting into force. The step plate 43 is formed in a strip shape elongated in the front-rear direction, and is held in a horizontal state parallel to the rocker 30 in a plan view.

<Regarding the four-bar link mechanism 45>
As shown in FIGS. 4 and 5, the four-bar 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 support link 451. 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 attached to the step plate 43 while supporting the front portion of the step plate 43 from below. It is horizontally rotatably connected to the center of the front portion by a first connecting vertical pin 451a. The other end of the front support link 451 is horizontally rotatably connected to the front right side of the link bracket 450 by a second connecting vertical pin 451b.

As shown in FIG. 5, the rear support link 455 is a strip-shaped link, and supports the rear portion of the step plate 43 from below. They are connected so as to be horizontally rotatable by a connecting vertical pin 455a. The other end of the rear support link 455 is horizontally rotatably connected to the rear right side of the link bracket 450 by a fourth connecting vertical pin 455b. 5 and 6, the front support link 451 and the rear support link 455 rotate around the second vertical connection pin 451b and the fourth vertical connection pin 455b on the link bracket 450 side. The step plate 43 moves horizontally in an arc parallel to the rocker 30 . As a result, the step plate 43 protrudes outward in the vehicle width direction from below the fixed step 37 or is housed below the fixed step 37 .

<Regarding the conversion device 400>
As described above, the conversion device 400 is a device that converts the turning force of the front door 20 into a force for withdrawing/inserting 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 inner locker 31, a door-side gear 403 horizontally rotatably supported by the device bracket 401, and a step. A side gear 405 is provided. The door-side gear 403 and the step-side gear 405 are both spur gears and mesh with each other. The conversion device 400 includes a door-side link 410 connecting the front door 20 and the door-side gear 403, a step-side link 412 rotating together with the step-side gear 405, and a roller 412r of the step-side link 412. A rail 415 on the side of the step plate 43 is provided.

As shown in FIGS. 5 and 6, the door-side link 410 rotates the door-side gear 403 clockwise when the front door 20 rotates in the opening direction, and rotates the door-side link 410 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 thereof is connected to a position near the center of rotation 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 connection vertical pin 410b so as to be horizontally rotatable.

As shown in FIG. 2, the door-side link 410 is connected to the door-side gear 403 from below by a gear-side connecting vertical pin 410b. The door-side link 410 is horizontally held below the locker 30 and connected to the pin support portion 24 provided at the lower end of the front door 20 by a door-side connecting vertical pin 410a. Here, the connecting positions of the door-side link 410, the front door 20, and the door-side gear 403 are such that the rotation angle of the door-side gear 403 increases as the rotation angle of the front door 20 increases. position.

The step-side gear 405 that meshes with the door-side gear 403 is manufactured to have a predetermined gear ratio with the door-side gear 403, as shown in FIG. Rotate by a given angle in the opposite direction. The base end of the step-side link 412 is connected to the rotation center C2 of the step-side gear 405 in a non-rotatable state. As shown in FIG. 3 , the base end 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. The rollers 412r are fitted to the rails 415 on the side of the step plate 43 so as to roll along the rails 415. As shown in FIG.

The rail 415 of the step plate 43 is supported by a bracket 43p fixed to the lower surface of the step plate 43, as shown in FIG. The rail 415 has a substantially inverted U-shaped 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 linear portion 415s extending in the front-rear direction parallel to the step plate 43, and an arc portion 415e provided continuously in front of the linear portion 415s. As shown in FIGS. 6 and 7, the arc portion 415e of the rail 415 is configured to overlap the locus of movement of the roller 412r of the step-side link 412 rotating about 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 extends obliquely rearward, and the roller 412r is held at the rear end position of the linear portion 415s of the rail 415. there is

As shown in FIGS. 8 and 9, the vertical wall portion of the arc portion 415e of the rail 415 is formed with a plurality of recesses 415z into which the rollers 412r of the step-side link 412 are fitted. The recesses 415z are formed at the rear end of the arc portion 415e of the rail 415, at an intermediate position near the rear end of the arc portion 415e, and at the front end of the arc portion 415e. As shown in FIG. 9, the recess 415z of the rail 415 is formed between a pair of longitudinal beads 415y that protrude inward. Here, the rail 415 is made of, for example, a steel plate, and the roller 412r is made of, for example, flexible resin.

When the roller 412r of the step-side link 412 is fitted into the recess 415z of the rail 415, the step-side link 412 is prevented from rotating about the rotation center C2. However, when the step-side link 412 rotates in the direction of releasing the engagement between the roller 412r and the recessed portion 415z of the rail 415 with a rotating force greater than a certain value, the roller 412r is elastically deformed, and the roller 412r and the recessed portion 415z of the rail 415 are separated from each other. is released. 8 and 9, the vertical bead 415y is exaggerated and enlarged for explanation.

<Operation of movable step device 40>
When the front door 20 is closed, the step plate 43 is in the retracted position below the fixed step 37, as shown in FIGS. Also, the rail 415 attached to the step plate 43 via the bracket 43p is stored under the locker 30 as shown in FIG. As described above, the step-side link 412 extends obliquely 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 linear portion 415s of the rail 415. there is

In this state, when the front door 20 rotates in the opening direction (leftward rotation in FIG. 5), the door-side link 410 is pulled by the front door 20, so that the door-side gear 403 rotates rightward in FIG. As a result, the step-side gear 405 meshing with the door-side gear 403 rotates to the left by a predetermined angle. As a result, the step-side link 412 rotates to the left 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 provided on the step plate 43 from the rear end position of the straight portion 415s.

That is, since the roller 412r, which moves in an arc about the center of rotation C2 on the rotation free end side of the step-side link 412, rolls forward along the linear portion 415s of the rail 415, the linear portion 415s of the rail 415 moves toward the roller. 412r receives a pressing force in a right angle direction (rightward direction). As a result, the step plate 43 is pushed rightward (outward in the vehicle width direction) via the rail 415, and the rail 415 and the step plate 43 move toward the rocker 30 by the action of the four-bar link mechanism 45 as shown in FIG. , and protrudes from the lower side of the fixed step 37 . Then, as shown in FIG. 6, the left rotation of the step-side link 412 causes the roller 412r at the tip of the step-side link 412 to reach the front end position of the linear portion 415s of the rail 415 (the rear end position of the circular arc portion 415e). At this stage, the amount of protrusion of the step plate 43 is maximized. That is, the step plate 43 moves to the unfolded position.

As shown in FIG. 6, the rotation angle of the front door 20 at which the step plate 43 is maximized is .theta. ing. When the roller 412r at the tip of the step-side link 412 reaches the rear end position of the arc portion 415e of the rail 415, the roller 412r is engaged with the recess 415z of the rail 415 as shown in FIG. Thereby, the rotation of the step-side link 412 is stopped. Therefore, even if the front door 20 is released, the front door 20 is held at the rotation angle .theta. Further, by holding the front door 20 at the position of the rotation angle θ, the step plate 43 is held at the unfolded position.

When a force greater than the fitting force between the roller 412r and the recessed portion 415z of the rail 415 is applied to the front door 20 in the opening direction, the door-side link 410, the door-side gear 403, and the step-side gear 405 act to move the step-side link 412. further rotates to the left. That is, the roller 412r of the step-side link 412 is elastically deformed, so that the engagement between the roller 412r and the recessed portion 415z of the rail 415 is released. Then, the roller 412 r at the tip of the step-side link 412 rolls forward along the arc portion 415 e of the rail 415 . Here, the arc portion 415e of the rail 415 is configured so as to overlap the locus of movement of the roller 412r of the step-side link 412. As shown in FIG. Therefore, the roller 412r of the step-side link 412 rolls forward along the arc portion 415e of the rail 415, so that the amount of protrusion of the step plate 43 is maintained at its maximum. Then, when the front door 20 is rotated to, for example, a half-open angle, the roller 412r of the step-side link 412 is positioned halfway along the arc portion 415e of the rail 415 as shown by the dotted line in FIG. 8 and FIG. It fits with the recess 415z.

Therefore, even if the front door 20 is released, the front door 20 is held at the half-open position by the fitting force between the roller 412 r and the recess 415 z of the rail 415 . Further, the step plate 43 is also continuously held at the unfolded position. When a further force is applied to the front door 20 in the opening direction, the elastic deformation of the roller 412r disengages the roller 412r from the recess 415z of the rail 415, and the step-side link 412 rotates to the left. When 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 moves to the arc portion of the rail 415 as shown in FIG. The front end position of 415e is reached. As a result, the roller 412r of the step-side link 412 is fitted into the concave portion 415z at the front end position of the arc portion 415e of the rail 415, as indicated by the two-dot chain line in FIG.

When the front door 20 is rotated in the closing direction (rotated to the right) from the fully open position, the door-side link 410 is pushed by the front door 20 to rotate the door-side gear 403 to the left. As a result, the step-side gear 405 rotates to the right and the step-side link 412 rotates to the right. As a result, the engagement between the roller 412r of the step-side link 412 and the recess 415z of the rail 415 is released, and the roller 412r rolls backward along the arc portion 415e of the rail 415. As shown in FIG. Then, the roller 412r of the step-side link 412 rolls rearward along the linear portion 415s of the rail 415, so that the linear portion 415s of the rail 415 receives a pulling force in the left direction (inward in the vehicle width direction). As a result, the step plate 43 is stored below the fixed step 37 .

<Correspondence between terms used in the present embodiment and terms related 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 concave portion 415z of the arc portion 415e of the rail 415 provided on the step plate 43 and the roller 412r of the step-side link 412 correspond to the door holding mechanism of the present invention. Also, the recessed portion 415z of the arc portion 415e corresponds to the fitting portion of the present invention. Further, the linear portion 415s of the rail 415 constituting the conversion device 400 corresponds to the portion constituting the driving state in the conversion device of the present invention, and the arc portion 415e of the rail 415 constitutes the non-driving state of the conversion device of the present invention. corresponds to the part that Further, the position of the rotational angle θ of the front door 20, the half-open position, and the fully open position correspond to the predetermined angular positions of the door of the present invention, and the rotational angle θ of the front door 20 corresponds to the predetermined angular position of the door of the present invention. Equivalent to an angle.

<Advantages of movable step device 40 according to the present embodiment>
According to the movable step device 40 according to this embodiment, the step plate 43 can be taken in and out by rotating the front door 20 by the conversion device 400 . Further, since the conversion device 400 is provided with a door holding mechanism (recessed portion 415z of the rail 415), when the front door 20 is rotated to a position such as a rotation angle θ (position of a predetermined angle), The front door 20 can be held in that position. As a result, the amount of protrusion of the step plate 43 can be maintained as it is. That is, there is no problem such as the front door 20 and the step plate 43 moving against their will. Further, the roller 412r of the step-side link 412 is configured to be easily deformed with respect to the rail 415, and the step-side link 412 releases the engagement between the roller 412r and the recessed portion 415z of the rail 415 with a turning force greater than a certain level. By rotating in the direction, the roller 412r is deformed and the fitting with the recess 415z of the rail 415 is released.

[Change example]
The present invention is not limited to the above embodiments, and modifications can be made without departing from the scope of the present invention. For example, in the movable step device 40 according to the present embodiment, a pair of vertical beads 415y are formed on the arc portion 415e of the rail 415 to provide the concave portion 415z to be fitted with the roller 412r. However, it is also possible to provide recesses by forming a plurality of hemispherical projections on the wall surface of the arc portion 415e of the rail 415, for example. Further, a configuration is also possible in which a leaf spring-like member that protrudes inward from the wall surface of the arc portion 415e of the rail 415 forms a concave portion that engages with the roller 412r. Further, in this embodiment, an example is shown in which the gears of the conversion device 400 are configured by the door-side gear 403 and the step-side gear 405 that mesh with each other. However, it is also possible to provide an intermediate gear between the door-side gear 403 and the step-side gear 405 to form a triple gear. As a result, the direction of rotation of the step-side gear 405 can be reversed. In this embodiment, the 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 the force of opening and closing the front door 20. FIG. However, a configuration is also possible in which the movable step device 40 is provided at the rear door opening of the vehicle body 10 and the step plate 43 is moved in and out by the force of opening and closing the rear door.

10: vehicle body 11: front door opening (door opening)
20... front door (door)
43... Step plate 400... Conversion device 412... Step side link 412r... Roller (door holding mechanism)
415... Rail 415e... Arc portion ( portion constituting non-driving state )
415z... Recessed portion (door holding mechanism, fitting portion)
415s...Linear portion ( portion constituting driving state )
θ・・・Rotating angle (predetermined angle, predetermined angle)

Claims (4)

A vehicle with a step, comprising: a door for opening and closing a door opening of a vehicle body by horizontally turning;
a conversion device for converting the turning force of the door into a force for withdrawing the step plate,
The conversion device is provided with a door holding mechanism for holding the door at a predetermined angular position when the door is rotated to a predetermined angle,
The converting device includes a driving state for moving the step plate from the retracted position to the extended position where the amount of protrusion is maximized when the door is rotated from the closed position to a predetermined angle, and and a portion that constitutes a non-driving state that holds the step plate in the unfolded position when the step plate is rotated over an angle,
The door holding mechanism is provided in a portion constituting the non-driving state,
The conversion device includes a step-side link that rotates in conjunction with the rotation of the door, and a rail that is provided on the step plate and guides the free end of rotation of the step-side link. ,
The vehicle with a step, wherein the portion constituting the driving state is a portion of the rail that receives a pressing force in the vehicle width direction from the free rotation end side of the step-side link. A vehicle with a step, comprising: a door for opening and closing a door opening of a vehicle body by horizontally turning;
a conversion device for converting the turning force of the door into a force for withdrawing the step plate,
The conversion device is provided with a door holding mechanism for holding the door at a predetermined angular position when the door is rotated to a predetermined angle,
The converting device includes a driving state for moving the step plate from the retracted position to the extended position where the amount of protrusion is maximized when the door is rotated from the closed position to a predetermined angle, and and a portion that constitutes a non-driving state that holds the step plate in the unfolded position when the step plate is rotated over an angle,
The door holding mechanism is provided in a portion constituting the non-driving state,
The conversion device includes a step-side link that rotates in conjunction with the rotation of the door, and a rail that is provided on the step plate and guides the free end of rotation of the step-side link. ,
In the rail, a linear portion that constitutes the driving state and an arc portion that constitutes the non-driving state and overlaps with the locus of movement of the step-side link on the free end side of rotation are continuous. is provided,
A vehicle with a step in which the rail and the step plate move in the width direction of the vehicle by moving the free end side of the step-side link in an arc while moving along the linear portion of the rail. A vehicle with a step according to claim 2,
The door holding mechanism is provided on the wall surface of the arc portion of the rail, and is fitted with a roller on the free rotation end side of the step side link when the door is rotated to a predetermined angle. A vehicle with a step that is a junction . A vehicle with a step according to claim 3,
The roller of the step-side link is configured to be easily deformed with respect to the rail, and the step-side link moves in a direction to release the engagement between the roller and the engagement portion of the rail with a turning force of a certain level or more. A vehicle with a step that, when rotated, deforms the roller and releases the engagement with the engagement portion of the rail .

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