JP7428096B2 - Vehicle step device - Google Patents

Description

The present invention relates to a step device for a vehicle.

Patent Document 1 discloses a vehicle step device provided in a vehicle. The vehicle step device described in this document includes a base, two arms provided on the base, a drive device that rotates the arms, and a step supported by the arms.

Japanese Patent Application Publication No. 2004-359067

By the way, in a vehicle step device, it is difficult to make the step and base longer in the longitudinal direction due to manufacturing restrictions. From the first point of view, it is desirable that a long step be provided in a vehicle with a large entrance/exit. Furthermore, in the case of a doorway that extends from the passenger seat to the rear seat, it is desirable that the step be configured to extend from the passenger seat to the rear seat. From the second point of view, it is preferable that the base be long in order to fix the vehicle step device to the vehicle. Therefore, a vehicle step device having a long step or a long base is provided.

(1) A vehicle step device that solves the above problems includes a base that is attached to a vehicle, and a step that is supported by a plurality of arms provided on the base and is movable with respect to the base. At least one of the steps has a structure in which a front component and a rear component are connected in the longitudinal direction of the vehicle.

Long bases and long steps are difficult to form with molds and processing equipment. According to this configuration, at least one of the base and the step is divided into two components, so that a long step or a long base can be formed. In this way, a vehicle step device with a long step or a long base can be provided.

(2) The vehicle step device described above includes a base that is attached to the vehicle, and a step that is supported by a plurality of arms provided on the base and is movable with respect to the base. , the base has a structure in which a first base and a second base are connected in the longitudinal direction of the vehicle, and the arms include a first arm, a second arm, and a third arm rotatably attached to the base. The first base and the step are connected by the first arm and the second arm, the second base and the step are connected by the third arm, and the first base and the step are connected by the third arm. The fastening portion with the second base is configured to be adjustable in position.

According to this configuration, the position of the second base can be adjusted with respect to the first base while the base and the step are connected by the first arm, the second arm, and the third arm. This allows the third arm to be placed at an appropriate position so that the step moves smoothly.

(3) The vehicle step device described above includes a base that is attached to the vehicle, and a step that is supported by a plurality of arms provided on the base and is movable with respect to the base. , the step has a structure in which a first step and a second step are connected in the longitudinal direction of the vehicle, and the arms include a first arm, a second arm, and a third arm rotatably attached to the base. The base and the first step are connected by the first arm and the second arm, the base and the second step are connected by the third arm, and the first step and the second step are connected by the third arm. The fastening portion with the 2-step is configured to be position adjustable.

According to this configuration, the position of the second step can be adjusted with respect to the first step in a state where the base and the step are connected by the first arm, the second arm, and the third arm. This allows the third arm to be placed at an appropriate position so that the step moves smoothly.

(4) The vehicle step device described above includes a base that is attached to the vehicle, and a step that is supported by a plurality of arms provided on the base and is movable with respect to the base. , the base has a structure in which a first base and a second base are connected in the longitudinal direction of the vehicle, the arm is rotatably attached to the step, and the arm is rotatably connected to the first base. It includes a first arm, a second arm, and a third arm rotatably attached to the second base, and the shaft portion of the first arm and the shaft portion of the second arm are connected to the step. The third arm is non-adjustably mounted to the step, and the third arm is non-adjustably mounted to the step.

According to this configuration, the mounting position of the third arm relative to the step can be adjusted in a state where the base and the step are connected by the first arm, the second arm, and the third arm. This allows the arm to be placed in an appropriate position so that the step moves smoothly.

(5) In the vehicle step device, the third arm among the arms attached to the step is disposed offset in the vehicle width direction with respect to one of the first arm and the second arm. .

According to this configuration, the position of the attachment portion of the arm relative to the step is triangular on the step. As a result, the strength of the arm structure against the load applied to the step can be made higher than the strength of the arm structure when the attachment portions of the arms are aligned in a straight line.

(6) A step device for a vehicle that solves the above problem includes a base attached to a vehicle, a plurality of arms provided on the base, and a step supported by the plurality of arms and provided movably with respect to the base. and the base is provided with a fastening part to which an extension part extending the base is fastened, and the step is provided with a fastening part to which the extension part extending the step is fastened. It has at least one of the following configurations.

According to this configuration, at least one of the base and the step can be extended. In this way, a vehicle step device with a long step or a long base can be provided.

A vehicle step device can be provided that has a long step or a long base.

FIG. 1 is a plan view of a vehicle including a vehicle step device according to a first embodiment. FIG. 2 is a perspective view of a vehicle step device in which the step is placed in a closed position. FIG. 2 is a perspective view of a vehicle step device in which a step is placed in an open position. FIG. 2 is a plan view of a vehicle step device in which a step is placed in an open position. FIG. 3 is a plan view of the drive section. FIG. 5 is a cross-sectional view of the vehicle step device taken along line VI-VI in FIG. 4; FIG. 2 is an exploded perspective view of a part of the vehicle step device. 5 is a sectional view of the vehicle step device taken along line VIII-VIII in FIG. 4. FIG. An exploded perspective view of the step. FIG. 3 is a plan view of a first fastening portion between a first base and a second base. 5 is a sectional view of the vehicle step device taken along line XI-XI in FIG. 4. FIG. 5 is a sectional view of the vehicle step device taken along line XII-XII in FIG. 4. FIG. FIG. 3 is a plan view of another form of a vehicle step device.

<First embodiment>
A vehicle step device will be described with reference to FIGS. 1 to 10. In this embodiment, the longitudinal direction of the vehicle step device 1 corresponds to the longitudinal direction of the vehicle when the vehicle step device 1 is attached to the vehicle. Further, the longitudinal direction of the base 5 corresponds to the longitudinal direction of the vehicle when the vehicle step device 1 is attached to the vehicle. The longitudinal direction of the step 7 corresponds to the longitudinal direction of the vehicle when the vehicle step device 1 is attached to the vehicle.

As shown in FIG. 1, a vehicle step device 1 is attached to a vehicle 2. As shown in FIG. For example, the vehicle step device 1 is attached to the lower surface of the bottom plate of the vehicle body. The vehicle step device 1 is attached to the bottom plate of a vehicle body near a vehicle entrance that is closed by a door. The step 7 of the vehicle step device 1 is arranged below the lower end of the vehicle entrance for the purpose of being used as an auxiliary step for getting on and off when the step 7 is used. The step 7 of the vehicle step device 1 is moved by the power of the motor 31. The step 7 of the vehicle step device 1 moves from a closed position housed under the bottom plate of the vehicle 2 to an open position in response to a predetermined operation command when getting on or off the vehicle. When the step 7 moves to the open position, the step 7 is arranged so that at least a portion of the step 7 is exposed from the vehicle body in plan view.

As shown in FIG. 2, the closed position of the step 7 is located diagonally forward or diagonally rearward and adjacent to the base 5 when the vehicle step device 1 is attached to the vehicle 2.
As shown in FIG. 3, the open position of the step 7 is located at a predetermined distance from the base 5 in the vehicle width direction DX when the vehicle step device 1 is attached to the vehicle 2.

As shown in FIG. 4, the vehicle step device 1 includes a base 5 attached to the vehicle 2 and a step 7. The step 7 is supported by a plurality of arms 6 and is provided movably with respect to the base 5. In this embodiment, the vehicle step device 1 further includes a plurality of arms 6 provided on the base 5, a drive section 8 for operating the arms 6, and a bracket 9 for attaching the base 5 to the vehicle body.

In the vehicle step device 1, at least one of the base 5 and the step 7 is divided. At least one of base 5 and step 7 includes a plurality of components. The multiple components are fastened together.

Three brackets 9 are attached to the base 5. In this embodiment, the three brackets 9 are called a first bracket 11, a second bracket 12, and a third bracket 13 in order from the front. Bracket 9 may be omitted. When the bracket 9 is omitted, the base 5 is provided with an attachment portion for attaching the base 5 to the vehicle body.

The vehicle step device 1 includes a first arm 21, a second arm 22, and a third arm 23 as the arm 6. The first arm 21, the second arm 22, and the third arm 23 are attached to the base 5 so as to be horizontally rotatable. The state in which the first arm 21, the second arm 22, and the third arm 23 are horizontally rotatably attached to the base 5 means that the step 7 The first arm 21, the second arm 22, and the third arm 23 are shown attached to the base 5 so that they move horizontally. Specifically, the end of each arm 6 on the base 5 side is attached to the base 5 so that the plane perpendicular to the rotation axis on the base 5 side rotates in a horizontal state.

Further, the first arm 21, the second arm 22, and the third arm 23 are attached to the step 7 so as to be horizontally rotatable. The state in which the first arm 21, the second arm 22, and the third arm 23 are horizontally rotatably attached to the step 7 means that the step 7 The first arm 21, the second arm 22, and the third arm 23 are shown attached to the base 5 so that they move horizontally. Specifically, the end of each arm 6 on the step 7 side is attached to the step 7 so that the plane perpendicular to the rotation axis on the step 7 side rotates in a horizontal state.

The first arm 21, the second arm 22, and the third arm 23 are arranged in this order from the front: the first arm 21, the second arm 22, and the third arm 23. The length of the first arm 21, the length of the second arm 22, and the length of the third arm 23 are all equal. The length of the arm 6 is defined as the distance between the rotation axis of one end of the arm 6 and the rotation axis of the other end of the arm 6.

A first shaft portion 24 is provided at the first end portion 21 a of the first arm 21 . A second shaft portion 25 is provided at the second end portion 21 b of the first arm 21 . The first end 21 a of the first arm 21 is attached to the base 5 via the first shaft 24 . The second end portion 21b of the first arm 21 is attached to the step 7 via the second shaft portion 25.

A first shaft portion 26 is provided at the first end portion 22 a of the second arm 22 . A second shaft portion 27 is provided at the second end portion 22b of the second arm 22. The first end 22a of the second arm 22 is attached to the base 5 via the first shaft 26. The second end 22b of the second arm 22 is attached to the step 7 via the second shaft 27.

A first shaft portion 28 is provided at the first end 23 a of the third arm 23 . A second shaft portion 29 is provided at the second end portion 23b of the third arm 23. The first end 23a of the third arm 23 is attached to the base 5 via the first shaft 28. The second end portion 23b of the third arm 23 is attached to the step 7 via the second shaft portion 29.

Preferably, among the first arm 21, the second arm 22, and the third arm 23, the third arm 23 is located at a position shifted from one of the first arm 21 and the second arm 22 in the vehicle width direction DX. will be placed in In this embodiment, the second shaft portion 29 of the third arm 23 is disposed at a position shifted from the second shaft portion 25 of the first arm 21 in the vehicle width direction DX.

As shown in FIG. 5 , the drive section 8 includes a motor 31 , a speed reduction section 32 , a power transmission section 33 , and a motor cover 35 . The drive unit 8 rotates at least one arm 6. In this embodiment, the drive unit 8 rotates the first arm 21.

The motor 31 is attached to the base 5 via a motor support member. The motor cover 35 accommodates the motor 31, the speed reduction section 32, and the power transmission section 33. The reduction unit 32 includes a reduction gear (not shown) that reduces the rotational speed of the output shaft of the motor 31, and a pinion gear 34 that rotates based on the rotation of the reduction gear. The pinion gear 34 meshes with a rack 36 of the power transmission section 33.

The power transmission section 33 will be explained with reference to FIGS. 5 and 6.
The power transmission section 33 includes a rack 36, two support pins 37 that support the rack 36 in a reciprocating manner, and a connecting component 38. As shown in FIG. 6, the upper end of the support pin 37 is attached to the base 5 via a support substrate 39. The connecting component 38 connects the end of the rack 36 and the protrusion 21c that protrudes from the first end 21a of the first arm 21. The protruding portion 21c protrudes from the first end portion 21a of the first arm 21 in the radial direction with respect to the rotation axis of the first shaft portion 24. The protrusion 21c is fixed to the first end 21a of the first arm 21. One end of the connecting component 38 is rotatably attached to the end of the rack 36, and the other end of the connecting component 38 is rotatably attached to the protrusion 21c of the first arm 21.

The rack 36 is moved by the rotational power of the motor 31. The rotational power of the motor 31 is transmitted to the pinion gear 34. The rotation of the pinion gear 34 moves the rack 36, and the movement of the rack 36 causes the first arm 21, which is connected to the rack 36 by the connecting part 38, to rotate. As the first arm 21 rotates, the step 7 moves. The second arm 22 and the third arm 23 rotate to follow the movement in step 7. In short, the first arm 21 is rotated by the rotational power of the motor 31, and the step 7 is moved by the rotation of the first arm 21.

The base 5 and the bracket 9 will be described with reference to FIG. 7.
When the vehicle step device 1 is attached to the vehicle 2, the base 5 is configured to extend in the longitudinal direction of the vehicle 2. The base 5 supports three arms 6 so as to be horizontally rotatable. The base 5 is configured to have a length corresponding to the length of the step 7. The base 5 may be divided into multiple components. The multiple components are fastened together. In this embodiment, the base 5 is divided into a first base 41 as a front component and a second base 46 as a rear component.

In this embodiment, the step 7 is long, the step 7 is supported by three arms 6, and the base 5 is divided into two pieces.

In this embodiment, the base 5 includes a first base 41 and a second base 46. The base 5 has a structure in which a first base 41 and a second base 46 are connected in the longitudinal direction of the vehicle. The first base 41 and the second base 46 are made of iron or an iron alloy. The first base 41 and the second base 46 are formed by press molding. The base 5 has a first fastening portion 50 that fastens the first base 41 and the second base 46.

The first fastening section 50 includes a first base fastening end 42 provided on the first base 41 and a second base fastening end 47 provided on the second base 46 . The second base fastening end 47 is fastened to the first base fastening end 42 .

As shown in FIG. 10, the first base fastening end portion 42 is provided with two base fastening holes (hereinafter referred to as the first base fastening hole 43 and the second base fastening hole 44). The second base fastening end 47 is provided with two fastening holes (hereinafter referred to as the third base fastening hole 48 and the fourth base fastening hole 49). When fastening the first base 41 and the second base 46, the third base fastening hole 48 is overlapped with the first base fastening hole 43, and the fourth base fastening hole 49 is overlapped with the second base fastening hole 44. . A fastening bolt is inserted into a hole formed by the first base fastening hole 43 and the third base fastening hole 48, and a hole formed by the second base fastening hole 44 and the fourth base fastening hole 49. Fastening bolts are inserted into and the first base 41 and the second base 46 are fastened together by tightening these fastening bolts.

The first arm 21 and the second arm 22 are attached to the first base 41 so as to be horizontally rotatable (see FIG. 4). The first end portion 21 a of the first arm 21 is attached to the front portion of the first base 41 via the first shaft portion 24 .

As shown in FIG. 8, the upper end portion of the first shaft portion 24 is fixed to the first base 41. As shown in FIG. A lower end portion of the first shaft portion 24 is supported by a first shaft cover 51. The first shaft cover 51 is attached to the first base 41. The first shaft cover 51 includes a support section 52 that supports the lower end of the first shaft section 24, and a pair of attachment sections 53 that are attached to the first base 41 (see FIG. 7). Attachment portions 53 are provided at both ends of the support portion 52, respectively. The attachment part 53 has an extension part 53a extending toward the first base 41, and a fixing part 53b connected to the extension part 53a and fixed to the first base 41. The first shaft portion 24 is arranged between the pair of attachment portions 53.

The second arm 22 is attached to the rear part of the first base 41 via the first shaft portion 26 (see FIG. 4). The upper end portion of the first shaft portion 26 is fixed to the first base 41 . A lower end portion of the first shaft portion 26 is supported by a second shaft cover 54 . The second shaft cover 54 has a structure similar to the first shaft cover 51. The second shaft cover 54 is attached to the first base 41.

The third arm 23 is attached to the second base 46 so as to be horizontally rotatable (see FIG. 4). The third arm 23 is attached to the second base 46 via the first shaft portion 28. The upper end portion of the first shaft portion 28 is fixed to the second base 46 . A lower end portion of the first shaft portion 28 is supported by a third shaft cover 55. The third shaft cover 55 has a structure similar to the first shaft cover 51. The third shaft cover 55 is attached to the second base 46.

As shown in FIG. 7, two brackets 9 are attached to the first base 41. In this embodiment, the first bracket 11 and the second bracket 12 are attached to the first base 41. When the vehicle step device 1 is attached to the vehicle 2, the first bracket 11 is configured to intersect the first base 41 in the longitudinal (longitudinal) direction of the vehicle. Vehicle attachment portions 61 that are attached to the vehicle 2 are provided at both ends of the first bracket 11 . The first bracket 11 is provided with a rib 62 that extends to intersect the first base 41 in the vehicle width direction DX. In the vehicle width direction DX, two bracket fastening parts 63 fastened to the first base 41 are provided at the center of the first bracket 11 . The two bracket fastening parts 63 are arranged in the longitudinal direction of the first base 41 and are arranged so that the first shaft part 24 is sandwiched between them in plan view. Each of the two bracket fastening parts 63 of the first bracket 11 is fastened to a portion where the first base 41 and the mounting part 53 of the first shaft cover 51 overlap.

In the mounted state in which the vehicle step device 1 is mounted on the vehicle 2, the second bracket 12 has a structure similar to the first bracket 11.

One bracket 9 is attached to the second base 46. In this embodiment, the third bracket 13 is attached to the second base 46. In the mounted state in which the vehicle step device 1 is mounted on the vehicle 2, the third bracket 13 has a structure similar to the first bracket 11.

Step 7 will be explained with reference to FIG.
The length of the step 7 is configured, for example, to correspond to the length of the vehicle entrance/exit. Step 7 may be divided into multiple components. The multiple components are fastened together. The multiple components are fastened together. In this embodiment, step 7 is divided into a first step 71 as a front component and a second step 72 as a rear component.

Step 7 is supported by three arms 6. In this embodiment, step 7 is divided into two parts. Step 7 includes a first step 71 and a second step 72. The step 7 has a structure in which a first step 71 and a second step 72 are connected in the longitudinal direction of the vehicle. Further, the step 7 includes a step cover 73. The step cover 73 covers the first step 71 and the second step 72. The step cover 73 is made of aluminum or aluminum alloy. The step cover 73 is formed by an extrusion or drawing method. The first step 71 and the second step 72 are made of iron or an iron alloy. The first step 71 and the second step 72 are formed by press molding. The first step 71 is fixed to the step cover 73 with a fastening member. The second step 72 is fixed to the step cover 73 with a fastening member. Further, step 7 includes an end cover 73a. End covers 73a are attached to the front and rear ends of step 7.

The step 7 has a second fastening part 80 that fastens the first step 71 and the second step 72. The second fastening section 80 includes a first step fastening end 74 provided at the first step 71 and a second step fastening end 77 provided at the second step 72 . The second step fastening end 77 is fastened to the first step fastening end 74 .

The second shaft portion 27 of the second arm 22 is attached to the first step fastening end portion 74 . The upper part of the second shaft part 27 is exposed on the upper surface of the first step fastening end part 74 .
The second step fastening end 77 is configured to overlap the first step fastening end 74 . The second step fastening end 77 is provided with a through hole 77a. The through hole 77a allows the upper part of the second shaft portion 27 exposed from the upper surface of the first step fastening end 74 to escape when the second step fastening end 77 is stacked on the first step fastening end 74. It is configured as follows. Such a configuration prevents the thickness of the overlapping portion between the first step fastening end 74 and the second step fastening end 77 from increasing. Further, by having a structure in which the second step fastening end 77 overlaps around the second shaft portion 27 of the second arm 22 at the first step fastening end 74, the first step fastening end 74 and the second step fastening end 74 can be fastened together. The end portion 77 is supported by the second arm 22 . That is, the second arm 22 supports both the end of the first step 71 and the end of the second step 72.

The first step fastening end 74 is provided with two step fastening holes (hereinafter referred to as a first step fastening hole 75 and a second step fastening hole 76). The second step fastening end 77 is provided with two step fastening holes (hereinafter referred to as a third step fastening hole 78 and a fourth step fastening hole 79).

When fastening the first step 71 and the second step 72, the third step fastening hole 78 is overlapped with the first step fastening hole 75, and the fourth step fastening hole 79 is overlapped with the second step fastening hole 76. . The fastening bolt is inserted into the hole formed by the second step fastening hole 76 and the fourth step fastening hole 79, and into the hole formed by the first step fastening hole 75 and the third step fastening hole 78. The first step 71 and the second step 72 are fastened by inserting the fastening bolt and tightening the fastening bolt.

The relationship between step 7 and arm 6 will be explained.
The second end portion 21b of the first arm 21 is attached to the first step 71 via the second shaft portion 25. The second end 22b of the second arm 22 is attached to the first step 71 via the second shaft 27. The second base 46 and the second step 72 are connected by the third arm 23. The second end portion 23b of the third arm 23 is attached to the second step 72 via the second shaft portion 29.

Next, the structure of the vehicle step device 1 will be explained.
At least one of the base 5 and the step 7 is divided into multiple components. The base 5 may be divided into multiple components. Step 7 may be divided into multiple components. In this embodiment, the base 5 includes the first base 41 and the second base 46 that are fastened to each other as described above. The step 7 has a first step 71 and a second step 72 fastened together.

The first base 41 and the first step 71 are connected by the first arm 21 and the second arm 22. That is, the first base 41, the first step 71, the first arm 21, and the second arm 22 form a parallelogram link.

The vehicle step device 1 includes three arms 6. When the vehicle step device 1 includes three arms 6, if the dimensions of the base 5, arm 6, and step 7 are not highly accurate, the vehicle step device 1 must be assembled so that the step 7 moves smoothly. is difficult. Specifically, in order for the step 7 to move smoothly, the first arm 21 and the second arm 22 attached to the first base 41 and the first step 71 must be attached to the second base 46 and the second step 72. It is important to place the attached third arm 23 in an accurate position. For this reason, in this embodiment, the first fastening part 50 between the first base 41 and the second base 46, the second fastening part 80 between the first step 71 and the second step 72, and the second fastening part 80 between the first base 41 and the second base 46, At least one location of the first shaft portion 28 of the third arm 23 and the second shaft portion 29 of the third arm 23 at the second step 72 is configured to be position adjustable.

Due to the simplicity of the structure, for example, the position of at least one of the first fastening part 50 between the first base 41 and the second base 46 and the second fastening part 80 between the first step 71 and the second step 72 is adjustable. It is preferable that the configuration is as follows.

As shown in FIG. 10, in this embodiment, the second base 46 is attached to the first base 41 so that its position can be adjusted. Specifically, the second base fastening end 47 of the second base 46 is configured to be position adjustable with respect to the first base fastening end 42 of the first base 41 . The second base fastening hole 44 of the first base fastening end 42 is configured to be larger than the fourth base fastening hole 49 of the second base fastening end 47 . More specifically, the second base fastening hole 44 has a fourth base fastening hole 49 inside the second base fastening hole 44 with the second base fastening end 47 overlapping the first base fastening end 42 . It is constructed such that it fits in the body, and is fastened with bolts and nuts. Thereby, the second base 46 can be positioned with respect to the first base 41, and the positional relationship between the first arm 21, the second arm 22, and the third arm 23 is adjusted.

In one example, the first step 71 and the first base 41 are connected by the first arm 21 and the second arm 22 with the second step 72 fastened to the first step 71 . Next, the second step 72 and the second base 46 are connected by the third arm 23. Finally, the position of the second base 46 with respect to the first base 41 is adjusted. In this final operation, the second base 46 is positioned relative to the first base 41. Specifically, while moving the step 7 so that the step 7 opens and closes, a position of the second base 46 where the step 7 moves smoothly is searched, and at the found position, the second base is attached to the first base 41. 46 is fixed. In this way, the positional relationship between the first arm 21, the second arm 22, and the third arm 23 is adjusted.

The operation of this embodiment will be explained.
The vehicle step device 1 includes a base 5, a step 7, and an arm 6. A longer base 5 or step 7 requires larger metal processing or forming equipment. For this reason, there is a problem in that it is difficult to manufacture a vehicle step device 1 in which the base 5 or the step 7 is long. In this regard, in this embodiment, at least one of the base 5 and the step 7 is divided into a plurality of components. Since the component is easy to manufacture with metal processing or forming equipment, it is possible to provide a vehicle step device 1 with a long base 5 or a long step 7.

The vehicle step device 1 includes a step device main body portion 90 having a parallelogram link mechanism including a first base 41, a first step 71, a first arm 21, and a second arm 22 (see FIG. 4). The vehicle step device 1 has a structure in which a step extension portion 91 is connected to a step device main body portion 90. The step extension part 91 includes a second base 46, a second step 72, and a third arm 23, and is configured to be connectable to the step device main body part 90. The step extension part 91 is formed by a first fastening part 50 that is a fastening part between the first base 41 and the second base 46 and a second fastening part 80 that is a fastening part between the first step 71 and the second step 72. , is fastened to a step device main body portion 90 having a parallelogram linkage. At least one of the first fastening section 50 and the second fastening section 80 is configured to be position adjustable. As a result, the step extension portion 91 is positioned relative to the step device main body portion 90 so that the third arm 23 smoothly interlocks with the operations of the first arm 21 and the second arm 22 of the parallelogram link mechanism. can.

The effects of this embodiment will be explained.
(1) In the vehicle step device 1, at least one of the base 5 and the step 7 has a structure in which a front component and a rear component are connected in the longitudinal direction of the vehicle.

The long base 5 and the long step 7 are difficult to form using a mold or a processing device. According to this configuration, since at least one of the base 5 and the step 7 is divided into two components, the long step 7 or the long base 5 can be formed. In this way, a vehicle step device 1 having a long step 7 or a long base 5 can be provided.

(2) The vehicle step device 1 includes a first arm 21, a second arm 22, and a third arm 23. The base 5 has a structure in which a first base 41 and a second base 46 are connected in the longitudinal direction of the vehicle. Step 7 may be divided into two as in this embodiment, or may not be divided into two. The first base 41 and the step 7 are connected by the first arm 21 and the second arm 22, and the second base 46 and the step 7 are connected by the third arm 23. The first fastening portion 50 between the first base 41 and the second base 46 is configured to be position adjustable.

According to this configuration, the position of the second base 46 with respect to the first base 41 can be adjusted in a state where the base 5 and the step 7 are connected by the first arm 21, the second arm 22, and the third arm 23. . This allows the third arm 23 to be placed at an appropriate position so that the step 7 moves smoothly.

(3) The vehicle step device 1 includes a first arm 21, a second arm 22, and a third arm 23. The base 5 may be divided into two as in this embodiment, or may not be divided into two. The step 7 has a structure in which a first step 71 and a second step 72 are connected in the longitudinal direction of the vehicle. The base 5 and the first step 71 are connected by the first arm 21 and the second arm 22, and the base 5 and the second step 72 are further connected by the third arm 23. The second fastening portion 80 between the first step 71 and the second step 72 is configured to be position adjustable.

According to this configuration, the position of the second step 72 with respect to the first step 71 can be adjusted in a state where the base 5 and the step 7 are connected by the first arm 21, the second arm 22, and the third arm 23. . This allows the third arm 23 to be placed at an appropriate position so that the step 7 moves smoothly.

In one example, the second step fastening end 77 of the second step 72 is configured to be position adjustable relative to the first step fastening end 74 of the first step 71 . Specifically, the diameter of the fourth step fastening hole 79 of the second step fastening end 77 is configured to be sufficiently larger than the shaft diameter of the fastening member. The diameter of the second step fastening hole 76 of the first step fastening end 74 is configured to be sufficiently larger than the shaft diameter of the fastening member. Thereby, the second step 72 can be positioned relative to the first step 71. Furthermore, with the second step 72 positioned relative to the first step 71, the second step 72 can be fastened to the first step 71 using bolts and nuts.

(4) In the vehicle step device 1, the third arm 23 is disposed at a position shifted from one of the first arm 21 and the second arm 22 in the vehicle width direction DX.
According to this configuration, the position of the attachment portion of the third arm 23 with respect to the step 7 forms a triangle on the step 7. This makes the strength of the arm structure against the load applied to step 7 higher than the strength of the arm structure when the attachment parts of the first arm 21, second arm 22, and third arm 23 are aligned in a straight line. can. Here, the strength of the arm structure means the strength of the first arm 21, second arm 22, and third arm 23 as a whole.

<Other embodiments>
The embodiments described above are not limited to the example configurations described above. The above embodiment may be modified as follows. In addition, in the following modified example, the structure which is not substantially changed from the structure of the said embodiment is attached with the same code|symbol as the structure of the said embodiment, and is demonstrated.

- For at least one of the three arms 6, the position of the shaft portion of the arm 6 is configured to be movable with respect to the base 5, and after adjusting the rotation of the third arm 23, the position of the shaft portion of the arm 6 is configured to be movable relative to the base 5. The position may be fixed. At this time, the clearance of the shaft portion of the arm 6 having the shaft portion whose position has been adjusted may be configured to be the same as the clearance of the shaft portions of the other arms 6.

- One of the first arm 21, the second arm 22, and the third arm 23 may be attached to the step 7 so that its position can be adjusted as follows.

According to this configuration, the base 5 and the step 7 are connected by the first arm 21, the second arm 22, and the third arm 23, and the first arm 21, the second arm 22, and the third arm 23 The attachment position of one of them relative to at least one of the base 5 and the step 7 can be adjusted. As a result, one of the first arm 21, the second arm 22, and the third arm 23 can be placed at an appropriate position so that the step 7 moves smoothly.

Specifically, the second shaft portion 25 of the first arm 21 and the second shaft portion 27 of the second arm 22 are attached to the step 7 so that their positions cannot be adjusted. The third arm 23 is attached to the step 7 so that its position can be adjusted.

In one example, a support component that supports the second shaft portion 29 is attached to the second step 72 so that its position can be adjusted. According to this configuration, the attachment position of the third arm 23 to the step 7 can be adjusted in a state where the base 5 and the step 7 are connected by the first arm 21, the second arm 22, and the third arm 23. This allows the third arm 23 to be placed at an appropriate position so that the step 7 moves smoothly.

In another example, the second shaft portion 29 may be configured such that the rotation axis of the second shaft portion 29 of the third arm 23 is movable with respect to the second step 72 . If sufficient clearance exists in the shaft portion (see FIG. 11), the position of the rotation axis of the third arm 23 is automatically moved in the horizontal direction along with the movement in step 7. According to this configuration, the step 7 can move smoothly without adjusting the position between the parts.

- In this embodiment and the above-mentioned modification, at least one shaft part of the first shaft part 28 of the third arm 23 at the second base 46 and the second shaft part 29 of the third arm 23 at the second step 72 The clearances CL1 and CL2 are larger than any clearance between the first shaft section 24 and the second shaft section 25 of the first arm 21 and the first shaft section 26 and the second shaft section 27 of the second arm 22. It may be configured as follows.

With reference to FIG. 11, the clearance CL1 of the first shaft portion 28 of the third arm 23 will be explained. FIG. 11 is a sectional view of the first shaft portion 28 of the third arm 23. As shown in FIG.
The first shaft portion 28 includes a cylinder 81 fixed to the third arm 23, a shaft 82 inserted through the cylinder 81, and a bearing 83 disposed between the shaft 82 and the cylinder 81. . The clearance CL1 of the first shaft portion 28 is defined as the gap between the bearing 83 and the shaft body 82 or the gap between the bearing 83 and the cylinder body 81.

With reference to FIG. 12, the clearance CL2 of the second shaft portion 29 of the third arm 23 will be explained. FIG. 12 is a sectional view of the second shaft portion 29 of the third arm 23. As shown in FIG.
The second shaft portion 29 includes a through hole 84 provided in the third arm 23 , a shaft body 85 inserted into the through hole 84 , and a bearing 86 disposed between the shaft body 85 and the through hole 84 . The shaft body 85 includes a main body portion 85a having a through hole, and a fitting member 85b that fits into the through hole of the main body portion 85a. The clearance CL2 of the second shaft portion 29 is defined as the gap between the bearing 86 and the shaft body 85 or the gap between the bearing 86 and the through hole 84.

The rotation of the third arm 23 relative to the step 7 or the base 5 can be adjusted by these clearances CL1 and CL2.

- In the vehicle step device 1 shown in this embodiment, the step device main body portion 90 having the parallelogram link mechanism may be used as the vehicle step device 3 having the short steps 97.

- In the vehicle step device 1 shown in this embodiment, the parallelogram link mechanism may be constituted by a quadrilateral link mechanism.

As shown in FIG. 13, the vehicle step device 3 is supported by a base 95 attached to the vehicle 2, a plurality of arms 96 provided on the base 95, and is movable with respect to the base 95. and a drive unit 8 that operates the arm 96. The base 95 is configured by the first base 41. The base 95 is provided with a fastening part 98 to which an extension part extending the base 95 is fastened. For example, the extension part is configured like the second base 46 in the embodiment described above. The fastening portion 98 is configured like the first base fastening end 42 of the first base 41 .

The step 97 is provided with a fastening part 100 to which an extension part extending the step 97 is fastened. The fastening portion 100 may be configured like the first step fastening end 74 of the first step 71 shown in this embodiment. For example, the extension is configured as the second step 72 shown in this embodiment.

A mounting component 102 constituting an end portion of the step 97 can also be attached to the fastening portion 100 of the step 97 . The mounting component 102 is configured to be attachable to and detachable from the fastening portion 100. For example, the mounting component 102 is fastened to the fastening portion 100 using a fastening bolt. The extension of the base 95 and the extension of the step 97 attached to the vehicle step device 3 can take various forms. Preferably, step 97 is provided with a step cover.

The effects of the vehicle step device 3 will be explained.
The vehicle step device 3 includes at least one of the following first configuration (A) and second configuration (B). In the first configuration (A), the base 95 is provided with a fastening portion 98, and the fastening portion 98 is configured such that an extension portion extending the base 95 is fastened. In the second configuration (B), the step 97 is provided with a fastening part 100, and the fastening part 100 is configured such that an extension part extending the step 97 is fastened.

According to this configuration, at least one of the base 95 and the step 97 can be extended. In this way, a vehicle step device 3 having a long step 97 or a long base 95 can be provided.

1, 3...Vehicle step device 2...Vehicle 5...Base 6...Arm 7...Step 21...First arm 22...Second arm 23...Third arm 41...First base 46...Second base 50...First fastening Part 53a... Extension part 71... First step 72... Second step 80... Second fastening part 95... Base 96... Arm 97... Step 98... Fastening part 100... Fastening part

Claims (6)

comprising a base attached to a vehicle, and a step supported by a plurality of arms provided on the base and movable with respect to the base,
At least one of the base and the step has a structure in which a front component and a rear component are connected in the longitudinal direction of the vehicle,
one or more of the arms are attached to each of the front component and the rear component;
The fastening portion between the front component and the rear component allows the positions of these components to be adjusted.
Vehicle step device. A step device for a vehicle, comprising a base attached to a vehicle, and a step supported by a plurality of arms provided on the base and provided movably with respect to the base,
The base has a structure in which a first base and a second base are connected in the longitudinal direction of the vehicle,
The arms include a first arm, a second arm, and a third arm rotatably attached to the base,
The first base and the step are connected by the first arm and the second arm,
The second base and the step are connected by the third arm,
A vehicle step device, wherein a fastening portion between the first base and the second base is configured to be adjustable in position. A step device for a vehicle, comprising a base attached to a vehicle, and a step supported by a plurality of arms provided on the base and provided movably with respect to the base,
The step has a structure in which a first step and a second step are connected in the longitudinal direction of the vehicle,
The arms include a first arm, a second arm, and a third arm rotatably attached to the base,
The base and the first step are connected by the first arm and the second arm,
The base and the second step are connected by the third arm,
A vehicle step device, wherein a fastening portion between the first step and the second step is configured to be adjustable in position. A step device for a vehicle, comprising a base attached to a vehicle, and a step supported by a plurality of arms provided on the base and provided movably with respect to the base,
The base has a structure in which a first base and a second base are connected in the longitudinal direction of the vehicle,
the arm is rotatably attached to the step;
The arm includes a first arm and a second arm rotatably attached to the first base, and a third arm rotatably attached to the second base,
The shaft portion of the first arm and the shaft portion of the second arm are attached to the step so that their positions cannot be adjusted, and the third arm is attached to the step so that their positions can be adjusted. Step device. Any one of claims 2 to 4, wherein among the arms attached to the step, the third arm is disposed offset in the vehicle width direction with respect to one of the first arm and the second arm. The vehicle step device described in . A base attached to a vehicle, a plurality of arms provided on the base, and a step supported by the plurality of arms and provided movably with respect to the base,
At least one of: the base is provided with a fastening part to which an extension part extending the base is fastened; and the step is provided with a fastening part to which the extension part extending the step is fastened. A vehicle step device having the following configuration.