CN110386070B - Movable pedal device - Google Patents

Movable pedal device Download PDF

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Publication number
CN110386070B
CN110386070B CN201910197801.4A CN201910197801A CN110386070B CN 110386070 B CN110386070 B CN 110386070B CN 201910197801 A CN201910197801 A CN 201910197801A CN 110386070 B CN110386070 B CN 110386070B
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China
Prior art keywords
pedal
door
coupled
coupling
hinge plate
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Application number
CN201910197801.4A
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Chinese (zh)
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CN110386070A (en
Inventor
日比和宏
池田和弘
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Toyota Auto Body Co Ltd
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Toyota Auto Body Co Ltd
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Publication of CN110386070A publication Critical patent/CN110386070A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R3/00Arrangements of steps or ladders facilitating access to or on the vehicle, e.g. running-boards
    • B60R3/007Removable steps or ladders, e.g. foldable

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Mechanical Control Devices (AREA)

Abstract

A movable pedal device capable of keeping a door and a pedal in good linkage even if the door moves in a tilted state when the door and the pedal are used in linkage. The movable pedal device includes a pedal, a coupling mechanism, and a four-bar linkage (support mechanism), the four-bar linkage supporting the pedal to be movable between a storage position and a use position, the pedal being coupled to the slide door via the coupling mechanism and being moved from the storage position to the use position by a force directed outward in the vehicle width direction when the slide door is moved in the opening direction, the coupling mechanism including a hinge member (coupling portion) provided in the slide door and a rail portion (coupled portion) provided in the pedal and coupled to the coupling portion, the coupling portion between the hinge member and the rail portion being capable of maintaining the coupled state even when a misalignment occurs between the slide door and the pedal.

Description

Movable pedal device
Technical Field
The present invention relates to a movable vehicle pedal device provided at a position of a door opening portion of a vehicle body.
Background
A related art of a movable pedal device is described in patent document 1. As shown in fig. 10 and 11, the pedal device 100 of patent document 1 is configured such that the interlocking mechanism between the slide door 104 and the pedal 111 is engaged by the operation of the switching lever 119, and the pedal 111 is drawn out in association with the release of the slide door 104. The linkage mechanism between the sliding door 104 and the pedal 111 is as follows: the switching lever 119 is rotated in the horizontal direction, and the locking lever 120 extending vertically downward from the front end portion of the switching lever 119 is engaged with the hook 113 extending in the horizontal direction. That is, the locking lever 120 and the hook 113 are engaged with each other in a perpendicular state.
Documents of the prior art
Patent document
Patent document 1 JP-A-1-83645 (Kokai)
Disclosure of Invention
Problems to be solved by the invention
As described above, the pedal device 100 of patent document 1 is configured such that the locking lever 120 of the switching lever 119 of the interlocking mechanism and the hook 113 are engaged with each other so as to be perpendicular to each other. On the other hand, when the slide door is slid, for example, in order to improve the appearance, the slide door may be tilted so that the upper side of the slide door approaches the vehicle body. In this case, in the above configuration, the locking lever 120 of the switching lever 119 is also tilted as the slide door 104 is tilted. Accordingly, the locking lever 120 and the hook 113 cannot be perpendicular to each other, and the coupling portion between the locking lever 120 and the hook 113 is displaced in the horizontal direction, so that the coupling between the two levers 120 and 113 is unstable.
The present invention has been made to solve the above problems, and an object of the present invention is to provide a vehicle door and a pedal that can be used in conjunction with each other, and that can maintain good conjunction between the door and the pedal even when the door is moved in a tilted state.
Means for solving the problems
The above object is achieved by the respective means. A first aspect of the present invention relates to a movable pedal device provided at a position of a door opening of a vehicle body, including a pedal, a coupling mechanism, and a support mechanism, the support mechanism supporting the pedal so as to be movable between a storage position and a use position, the pedal being coupled to a door via the coupling mechanism, the pedal being moved from the storage position to the use position by receiving a force toward an outside in a vehicle width direction when the door is moved in an opening direction from the coupling mechanism, the coupling mechanism including a coupling portion provided to the door and a coupled portion provided to the pedal and coupled to the coupling portion, a coupling portion between the coupling portion and the coupled portion being capable of maintaining a coupled state even when a displacement occurs between the door and the pedal.
According to the present invention, the coupling portion between the coupling portion on the door side and the coupled portion on the pedal side of the coupling mechanism is configured to be able to maintain the coupled state even when the door and the pedal are displaced from each other. Therefore, even if the door moves in a state of being inclined with respect to the vehicle body, the interlocking between the door and the pedal can be maintained well.
According to the second aspect of the invention, the position of the connecting portion between the connecting portion and the connected portion of the connecting mechanism moves in parallel with the moving direction of the door as the door is opened and closed. Therefore, by keeping the distance between the coupling portion and the coupled portion constant when the door moves, the interlocking between the door and the pedal can be maintained well regardless of the moving direction of the door.
According to the third aspect of the invention, the coupling portion between the coupling portion and the coupled portion can be maintained in the coupled state even when the door and the pedal are displaced from each other by the biasing means that biases the coupling portion so as to press the coupled portion. Therefore, even when the door is displaced from the step plate when the door is moved in a state of being inclined with respect to the vehicle body, the coupled state can be maintained.
According to a fourth aspect of the present invention, a coupling portion of a coupling mechanism includes: a hinge member including a hinge shaft for connecting the first hinge plate and the second hinge plate to each other in a relatively rotatable manner; a force application unit installed at the hinge shaft; a roller mounted on the second hinge plate and capable of freely rotating on the second hinge plate; the coupled portion of the coupling mechanism is a rail portion that is provided on the pedal and in which the roller is engaged in a rollable state, and the roller is pressed against the rail portion by the urging unit.
In this way, since the first hinge plate of the hinge is fixed to the vehicle door and the second hinge plate is urged by the urging means around the hinge shaft, the roller is kept engaged with the rail portion. Thus, even when the door is moved in a state in which the door is inclined with respect to the vehicle body, the door and the step plate are displaced from each other, and the coupled state can be maintained. Further, since the roller attached to the coupling portion rolls in a state of contacting the rail of the coupled portion and moves along the rail in accordance with the movement of the door, the pedal can be smoothly moved from the storage position to the use position.
Effects of the invention
According to the present invention, when the door is used in conjunction with the step, the door and the step can be kept in good conjunction even when the door moves in an inclined state.
Drawings
Fig. 1 is a schematic perspective view of a vehicle equipped with a vehicle pedal device according to a first embodiment of the present invention.
Fig. 2 is a perspective view of the vehicle pedal device when the pedal is in the use position as viewed from below (IV perspective view of fig. 6).
Fig. 3 is a schematic diagram showing a moving locus of the slide door and a moving locus of the pedal.
Fig. 4 is a perspective view of the hinge member according to the first embodiment of the present invention as viewed from the front and above.
Fig. 5 is a longitudinal sectional view showing a relationship among the sliding door, the step device for the vehicle, and the rocker in a state where the sliding door is closed.
Fig. 6 is a longitudinal sectional view (III-III arrow sectional view of fig. 1) showing a relationship among the slide door, the step device for the vehicle, and the rocker in a state where the slide door is opened.
Fig. 7 is a longitudinal sectional view when the rolling roller of the hinge member according to the first embodiment of the present invention is engaged with the rail portion of the step plate.
Fig. 8 is a vertical cross-sectional view showing a process of releasing the engagement between the rolling roller of the hinge member and the rail portion of the step plate according to the first embodiment of the present invention.
Fig. 9 is a longitudinal sectional view when the engagement between the rolling roller of the hinge member and the rail portion of the step plate of the first embodiment of the present invention is released.
Fig. 10 is a perspective view showing a conventional pedal device for a vehicle.
Fig. 11 is a sectional view showing a conventional pedal device for a vehicle.
Description of the reference numerals
10 8230a vehicle body
12' \ 8230and rear door opening (door opening)
20 \ 8230and sliding door
24' \ 8230and outer decoration material (outside end of vehicle door)
30 method 8230a vehicle door sill
40 8230a pedal device (vehicle pedal device)
41' 8230a pedal
410 '\ 8230'; track part (connected part of connecting mechanism)
411 \ 8230and front end bending part (front end part)
413 '\ 8230'; straight line part (except front end part)
43 '\ 8230'; four-bar linkage (supporting mechanism)
43b 8230a rear connecting rod
43f 8230a front connecting rod
45-8230and connecting mechanism
50 '\ 8230'; hinge component (connecting part of connecting mechanism)
50a (8230); hinge axis
50b 8230and force applying unit
50f 8230and a first hinge plate
50r 823060 rolling roller
50s 8230and the second hinge plate
Detailed Description
[ first embodiment ]
Next, a pedal device for a vehicle according to a first embodiment of the present invention will be described with reference to fig. 1 to 9. The pedal device for a vehicle according to the present embodiment is a movable pedal device that can maintain the linkage between the door and the pedal in a satisfactory manner even when the door moves in an inclined state when the pedal device is used to link the door and the pedal. The front, rear, left, right, and up and down shown in the drawings correspond to the front, rear, left, right, and up and down of a vehicle provided with the pedal device for a vehicle of the present embodiment.
< overview of vehicle body 10 >
Before describing the vehicle pedal device 40 (hereinafter, referred to as pedal device 40) of the present embodiment, an outline of the vehicle body 10 will be described. As shown in fig. 1, a vehicle body 10 includes: a front door opening 11 corresponding to a front seat such as a driver seat and a front passenger seat; the back door opening 12 corresponds to a back seat. The front door opening 11 is openable and closable by a front door 15 that is pivotable about a door hinge (not shown). The back door opening 12 is openable and closable by a slide door 20 that moves in the vehicle front-rear direction.
< overview of the sliding door 20 >
As shown in fig. 5, 6, and the like, the slide door 20 is formed in a hollow closed cross-section shape by joining edge portions of the door outer panel 22 and the door inner panel 23 to each other. Further, a door inner reinforcement 26 for reinforcement is disposed between the door outer panel 22 and the door inner panel 23. Further, an exterior material 24 is provided on an outer lower portion of the door outer panel 22 of the slide door 20 so as to extend in the vehicle front-rear direction. As shown in fig. 5, a lower guide roller unit 25 is provided below the door inner panel 23. Further, the rollers of the lower guide roller unit 25 are fitted into the lower guide rail 19 in a rollable state. In fig. 6 to 9, the lower guide roller unit 25 is omitted.
A guide roller unit (not shown) is provided at an upper position and a central position in the height direction in the door inner panel 23 of the slide door 20. The rollers of the guide roller units are fitted into an upper guide rail (not shown) and a center guide rail (not shown) of the vehicle body 10 in a rollable state. Wherein the upper, center, and lower rails 19 are set in a planar shape so that the sliding door 20 can follow the movement locus D shown in fig. 3 0 、D s And (4) moving. Therefore, when the slide door 20 is moved from the fully closed position to the semi-open position, the slide door 20 follows the moving locus D 0 The vehicle moves rearward while moving outward in the vehicle width direction. Further, when the slide door 20 moves from the semi-open position to the fully-open position, the slide door 20 follows the movement locus D s Moving toward the rear of the vehicle.
< about the pedal support bracket 37>
As shown in fig. 5 and 6, a movable pedal device 40 is provided below a rocker 30 in the rear door opening portion 12 of the vehicle body 10. The step device 40 is supported from below by a step support bracket 37 fixed to the lower side of the rocker 30. As shown in fig. 2, the pedal support bracket 37 is used in a set of two. As shown in fig. 6, the step support bracket 37 is fixed to the rocker 30 on the outer side and the inner side of the lower end flange portions 333f, 31d of the rocker 30 across the lower end flange portions 333f, 31d of the rocker 30.
< Pedal device 40>
The step device 40 is supported by a pair of step support brackets 37 at the lower end of the rocker 30, and is disposed on the vehicle width direction outer sides of the lower end flange portions 333f, 31d of the rocker 30. As shown in fig. 2, 3, and the like, the pedal device 40 includes a pedal 41, a four-bar linkage 43, and a coupling mechanism 45, the four-bar linkage 43 supporting the pedal to be movable between a storage position and a use position, and the coupling mechanism 45 coupling the slide door 20 and the pedal 41. As shown in fig. 2 to 3, etc., the step 41 is formed in a band plate shape long in the front-rear direction, and is kept parallel to the rocker 30 in a horizontal plan view.
< about the four-bar linkage 43>
The four-link mechanism 43 includes a front link 43f and a rear link 43b formed in equal sizes. The proximal end portion of the front link 43f is connected to the pedal support portion 37s of the front pedal support bracket 37 in a horizontally rotatable state by a pivot center shaft 43c in a state of being superposed on the pedal support portion 37s from above. The front end of the front link 43f is connected to the front lower surface of the pedal 41 via a front end connecting shaft 43x in a horizontally rotatable state. The base end portion of the rear link 43b is connected to the pedal support portion 37s of the pedal support bracket 37 on the rear side so as to be horizontally rotatable via a pivot center shaft 43e in a state of being overlapped from above with the pedal support portion 37 s. The front end of the rear link 43b is connected to the rear lower surface of the pedal 41 via a front end connecting shaft 43y so as to be horizontally rotatable.
The distance between the front and rear end connecting shafts 43x, 43y connected to the lower surface of the pedal 41 is set to be equal to the distance between the rotation center shafts 43c, 43e connected to the pedal support portions 37s of the front and rear pedal support brackets 37. Also, as described above, the front link 43f and the rear link 43b are formed to be equal in size. Therefore, as shown in fig. 3, the front link 43f and the rear link 43b of the four-link mechanism 43 horizontally rotate, and the step panel 41 moves along the circular arc trajectory S when the front link 43f and the rear link 43b respectively pivot about the pivot center axes 43c and 43e while being parallel to the rocker 30 in a plan view. That is, the four-bar linkage 43 corresponds to a support mechanism that supports the pedal in the present invention so as to be movable between the accommodated position and the use position.
< connection means 45>
As shown in fig. 2 and 5 to 7, the coupling mechanism 45 that couples the pedal 41 and the slide door 20 includes a hinge member 50, and the hinge member 50 is fixed to the lower portions of the door outer panel 22 and the door inner panel 23 at the front end position of the slide door 20. As shown in fig. 4, the hinge member 50 includes a first hinge plate 50f and a second hinge plate 50s each having a plate shape, and a hinge shaft 50a connecting the hinge plates 50f and 50s in a relatively rotatable state. The first hinge plate 50f has a screw hole formed in an upper portion thereof, and the first hinge plate 50f is screwed to the door outer panel 22 and the door inner reinforcement 26. Further, a rolling roller 50r is attached to a distal end portion of the second hinge plate 50s so as to be parallel to the second hinge plate 50s and rotatable about an axis perpendicular to the second hinge plate 50 s. A biasing unit 50b such as a spring is attached to the hinge shaft 50a of the hinge member 50, and the second hinge plate 50s is biased by the biasing unit 50b in a direction to approach the first hinge plate 50f around the hinge shaft 50 a.
Therefore, as shown in fig. 5 and the like, the first hinge plate 50f of the hinge member 50 is fixed at the front end position of the slide door 20, while the second hinge plate 50s is vertically rotatable about the hinge shaft 50a located at the vehicle width direction outer side end (left end) of the step plate 41. When the step plate 41 and the slide door 20 are coupled, the hinge member 50 is folded about the hinge shaft 50a, and the second hinge plate 50s is kept horizontal on the lower side of the step plate 41. At this time, the rolling roller 50r is fitted to the rail portion 410 formed on the lower surface of the pedal 41 in a rollable state. Further, the second hinge plate 50s is biased in a direction approaching the first hinge plate 50f about the hinge shaft 50a by the biasing unit 50b, and thus the rolling roller 50r is pressed against the rail portion 410. Therefore, the pedal 41 and the slide door 20 are coupled via the hinge member 50, the rolling roller 50r, and the rail portion 410 of the coupling mechanism 45. That is, the hinge member 50 and the rolling roller 50r attached to the second hinge plate 50s correspond to a connection portion in the present application.
As shown in fig. 2, the rail portion 410 is formed in an inverted U-shape in cross section, and the rolling roller 50r is fitted from below. That is, the rail portion 410 provided on the pedal corresponds to the coupled portion in the present application. The rail portion 410 is constituted by a front end bent portion 411 and a straight portion 413, the straight portion 413 extending in the front-rear direction along the vehicle width direction outer side end of the lower surface of the step 41. The front end bent portion 411 of the rail portion 410 is bent toward the vehicle width direction inner side (right side) by a predetermined angle with respect to the straight portion 413. The front end bent portion 411 of the rail portion 410 is formed along the movement locus D when the sliding door 20 starts moving from the fully closed position toward the opening direction 0 . The linear portion 413 of the rail portion 410 and the movement locus D 0 Cross the moving track D from the semi-open position to the full-open position of the sliding door 20 s Parallel.
< action of pedal device 40>
In the state where the slide door 20 is in the fully closed position, as shown by the two-dot chain line in fig. 3, the front link 43f and the rear link 43b of the four-link mechanism 43 are horizontally rotated about the rotation center axes 43c, 43e to a position (right rotation restricting position) substantially parallel to the rocker 30, and as shown in fig. 5, the step panel 41 is held at the accommodating position on the lower side of the rocker 30. At this time, the rolling roller 50r coupled to the slide door 20 via the hinge member 50 is positioned at the distal end portion of the distal end bent portion 411 of the rail portion 410 of the step plate 41 (see fig. 2 and 3). In this state, when the slide door 20 starts to move from the fully closed position in the opening direction, the rolling roller 50r moves in the left-rear direction along the front end bent portion 411 of the rail portion 410 of the pedal 41.
When the movement of the slide door 20 in the opening direction is continued, the rolling roller 50r on the slide door 20 side reaches the linear portion 413 of the rail portion 410 of the step plate 41. The linear portion 413 of the rail portion 410 and the sliding door 20 start moving from the fully closed position to the opening directionTrack D 0 And (4) crossing. Therefore, when the rolling roller 50r on the side of the slide door 20 reaches the linear portion 413 of the rail portion 410, the moving force of the slide door 20 toward the vehicle width direction outer side is applied to the linear portion 413 of the rail portion 410 via the rolling roller 50r, the pedal 41 is pressed toward the vehicle width direction outer side, the front link 43f and the rear link 43b of the four-link mechanism 43 are rotated leftward as shown in fig. 3 about the rotation center axes 43c and 43e, and the pedal 41 is horizontally moved to the use position. Then, when the slide door 20 moves from the half open position to the full open position, the moving locus D of the slide door 20 s Since the roller 50r is parallel to the linear portion 413 of the rail portion 410, the pedal 41 can be held at the use position (see fig. 1) even if the roller moves rearward in the linear portion 413 of the rail portion 410. When the slide door 20 is closed from the fully open position to the fully closed position, the pedal 41 returns to the accommodated position in an operation opposite to the above-described operation.
< connection part of connection means 45>
When the slide door 20 and the step device 40 are coupled by the coupling mechanism 45, as shown in fig. 7 and the like, the rolling roller 50r of the hinge member 50 is fitted from below the rail portion 410 of the step 41. At this time, the second hinge plate 50s is biased by the biasing unit 50b attached to the hinge shaft 50a, and the rolling roller 50r is rollably engaged in a state of being pressed against the rail portion 410. That is, the pedal device 40 and the slide door 20 are coupled to each other via the rolling roller 50r and the rail portion 410. That is, the portion where the rolling roller 50r of the coupling portion is coupled to the rail portion 410 of the coupled portion corresponds to the coupling portion in the present invention.
As shown in fig. 6, when the slide door 20 is tilted such that the upper side of the slide door 20 is close to the vehicle body 10, the first hinge plate 50f of the hinge member 50 is tilted together with the slide door 20. That is, the first hinge plate 50f of the hinge member 50 is inclined in the clockwise direction with respect to the hinge shaft 50 a. However, since the second hinge plate 50s is biased in the direction of the first hinge plate 50f, i.e., in the counterclockwise direction, by the biasing means 50b, the rolling roller 50r attached to the second hinge plate 50s is kept engaged with the rail portion 410, and the coupled state can be maintained even when a misalignment occurs between the slide door 20 and the step panel 41.
Further, the pedal device 40 and the slide door 20 can be released from each other without interlocking them with each other. First, as shown in fig. 8, the second hinge plate 50s of the hinge member 50 is rotated in the clockwise direction against the urging force of the urging unit 50b, and the rolling roller 50r is detached from the rail portion 410 and held on the lower side of the pedal 41. Next, the pedal 41 is pushed in the right direction to be moved to the accommodated position. In this state, when the held second hinge plate 50s is released, the second hinge plate 50s rotates counterclockwise about the hinge shaft 50a by the biasing force of the biasing unit 50 b. Further, when the second hinge plate 50s rotates, as shown in fig. 9, the rolling roller 50r abuts against the inner side surface of the sliding door 20, the rotation of the second hinge plate 50s is stopped, and the second hinge plate 50s and the rolling roller 50r are accommodated inside the sliding door 20.
< advantages regarding the connecting portion of the present embodiment >
According to the pedal device 40 of the present embodiment, the coupling portion is configured to be able to maintain the coupled state of the slide door 20 and the pedal 41 even when the displacement occurs between the slide door 20 and the pedal 41. Therefore, even if the slide door 20 moves in a state of being inclined with respect to the vehicle body 10, the interlocking between the slide door 20 and the pedal device 40 can be maintained well.
[ modification ]
The present invention is not limited to the above-described embodiments, and modifications may be made without departing from the scope of the present invention. For example, the pedal device of the present embodiment exemplifies an example in which the linkage between the slide door and the pedal can be maintained well when the slide door moves in a tilted state. However, even when the slide door is displaced in the up-down direction during the sliding, the interlocking between the slide door and the pedal can be maintained well. Further, although the coupling mechanism 45 between the slide door and the pedal device is exemplified in the present application, the coupling mechanism 45 of the present embodiment may be used for coupling between the slide door (slide door) and the pedal device, for example.
In the present embodiment, an example in which the front link 43f and the rear link 43b of the four-link mechanism 43 are horizontally rotated by the force of the movement of the slide door 20 is illustrated. However, for example, a drive device may be provided in the pedal 41, and the pedal 41 may be moved between the storage position and the use position by horizontally rotating the front link 43f and the rear link 43b of the four-link mechanism 43 by the drive device.

Claims (4)

1. A movable pedal device provided at a door opening portion of a vehicle body,
comprises a pedal, a connecting mechanism and a supporting mechanism, wherein the supporting mechanism supports the pedal to move between a containing position and a using position,
the pedal is coupled to the door via the coupling mechanism, and is moved from the storage position to the use position by receiving a force toward the outside in the vehicle width direction when the door is moved in the opening direction from the coupling mechanism,
the coupling mechanism includes a coupling portion provided on the door and a coupled portion provided on the pedal and coupled to the coupling portion,
the coupling portion between the coupling portion and the coupled portion can maintain the coupled state even when the door and the pedal are misaligned.
2. The movable pedal device as claimed in claim 1,
the position of a connecting portion between the connecting portion and the connected portion of the connecting mechanism moves parallel to the moving direction of the door in accordance with the opening and closing of the door.
3. Movable pedal device according to claim 1 or 2,
the coupling portion between the coupling portion and the coupled portion can be maintained in the coupled state even when the door and the pedal are misaligned with each other by a biasing unit that biases the coupling portion so as to press the coupled portion.
4. Movable pedal device according to claim 1 or 2,
the connecting portion of the connecting mechanism includes: a hinge member including a first hinge plate, a second hinge plate, and a hinge shaft connecting the first hinge plate and the second hinge plate in a relatively rotatable state; a force application unit installed at the hinge shaft; a roller mounted on the second hinge plate and capable of freely rotating on the second hinge plate;
the coupled part of the coupling mechanism is a rail part which is provided on the pedal and in which the roller is engaged in a rollable state,
the roller is pressed to the rail portion by the urging unit.
CN201910197801.4A 2018-04-16 2019-03-15 Movable pedal device Active CN110386070B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-078296 2018-04-16
JP2018078296A JP6881385B2 (en) 2018-04-16 2018-04-16 Movable step device

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CN110386070A CN110386070A (en) 2019-10-29
CN110386070B true CN110386070B (en) 2023-02-17

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JP7355455B2 (en) 2019-09-09 2023-10-03 株式会社アイシン Vehicle step device
JP7357423B2 (en) * 2019-09-09 2023-10-06 株式会社アイシン Vehicle step device
JP7355453B2 (en) 2019-09-09 2023-10-03 株式会社アイシン Vehicle step device
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