JPH0225703Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a step that is provided at the entrance and exit of a vehicle and serves as a footboard when getting on and off the vehicle.

Generally, steps provided at vehicle entrances and exits are stepped portions formed on the floor, and the floor area becomes narrow due to the steps. Therefore, in vehicles with sliding doors, below the entrance/exit floor,
A plate-shaped step is provided that works in conjunction with the sliding door, and when the door is opened, it rotates toward the outside of the vehicle and is held horizontally, and when the door is closed, it rotates toward the interior of the vehicle and stands up, and is stored at the bottom of the floor. It is proposed that. However, conventional movable steps of this type have a complex structure, especially the link mechanism that interlocks with the door, and since this link mechanism is located at the bottom of the floor, it is likely to become unstable due to mud or freezing. There was a problem.

Therefore, the purpose of the present invention is to provide a movable step that does not require a complicated link mechanism and can operate smoothly at all times, and has a structure in which the movable step is linked to the sliding door via a gear. This aims to achieve the above objectives.

Hereinafter, the present invention will be explained with reference to illustrated embodiments.

Fig. 1 is a cross-sectional view in the width direction of the movable step of the present invention and the mechanism that operates it, and Fig. 2 is a perspective view of the step. A stepped portion 2 is fixed, and a bottom plate 3 is further fixed to the lower part of the stepped portion 2. The vehicle has a sliding door 4 on its side that slides in the front and rear directions to open and close an entrance.

A step 5 is rotatably supported on the outer end of the horizontal portion of the stepped portion 2. An arm 6 is provided on the inner surface of the lower end of the sliding door 4 and protrudes toward the interior of the vehicle, and a vertical roller 7 that supports the vertical load of the sliding door 4 is pivotally supported at the tip located at the top of the bottom plate 3. be. Furthermore, a horizontal roller 8 is pivotally supported at its tip. On the other hand, a guide rail 9 is installed on the bottom plate 3 in the direction of movement of the sliding door 4, which guides the horizontal roller 8 and restricts the lateral movement of the sliding door 4.

Guide grooves 1 are formed in walls 10a and 10b in the vehicle width direction formed on the vehicle body at the front and rear positions of step 5.
1a and 11b are formed in an inclined direction. wall 10
A is located on the front side of the vehicle, and wall 10b is located on the rear side of the vehicle. And in these grooves 11a and 11b, respectively,
Pins 120a and 120b provided at one end of the link arms 12a and 12b are inserted, and the other ends of each link arm 12a and 12b are pivotally connected to the front and rear edges of the step 5. and pin 120a,
By moving the grooves 11a and 11b from the outer end to the inner end of the step 5, the step 5 is rotated from the horizontal position protruding toward the outside of the vehicle to the upright direction. Further, a turnover type spring 121 is provided between the pin 120a inserted in the groove 11a and a fixed part of the vehicle, and the pin 120a inserted in the groove 11a is connected to the groove 11a.
a It acts to press against either end.

3 and 4 show the gear structure for operating step 5. Horizontal roller 8
A pinion is installed coaxially and integrally with this. The pinion has an integral structure consisting of a first pinion 13 having a large diameter and a second pinion 14 having a small diameter. A case 15 is disposed above and in parallel with the guide rail 9 so as to cover the pinions 13 and 14 (see FIG. 2), and its lower end is supported by the guide rail 9.

A fixed first rack 1 is mounted on the opposite wall of the case 15.
6 and a movable second rack 17 are provided. The first rack 16 meshes with a first pinion 13 that is connected to the sliding door 4 (FIG. 1) via the arm 6 and moves in the front-rear direction integrally therewith. On the other hand, the second rack 17 is slidably inserted into a guide tube 18 fixed to one side wall of the case 15, and meshes with the second pinion 14 which rotates together with the first pinion 13. One end of a push-pull wire 19 is connected to the tip of the rack 17, and the other end is connected to a link arm 12b shown in FIGS. 1 and 2.
It is connected to one end of the. A tube-shaped outer wire 20 is provided around the outer periphery of the push-pull wire 19. It should be noted that the first pinion 13 and the second pinion 14 do not necessarily have to have different diameters, as long as they have a structure that meshes with the first rack 16 and the second rack 17, respectively.

In the movable step and its operating mechanism constructed as described above, the sliding door 4 is moved in the front and back direction by the vertical rollers 8 and horizontal rollers 9 to open and close the entrance/exit of the vehicle provided with the step 5. As shown in FIG. 2, the end of the guide rail 9 is curved toward the interior of the vehicle, and the sliding door 4
When the door 4 finishes closing, the door 4 is moved inward so that its outer surface is flush with the outer surface of the vehicle body.

In FIG. 3, the direction of arrow A indicates the door opening direction, and the direction of arrow B indicates the door closing direction. First, the door opening operation will be explained.

When the door is closed, the step 5 stands up as shown by the two-dot chain line in FIG. 1 and is housed inside the door 4 under the floor 1.

When the door 4 is opened, the pinions 13 and 14 move downward in FIG. 3 together with the horizontal roller 8 and enter the case 15. and second pinion 14
first engages with the movable second rack 17 and moves clockwise while idling. The first pinion 13 then meshes with the fixed first rack 16. Here, the second pinion 14 meshing with the second rack 17 is forced to rotate counterclockwise, and the second pinion 14 is forced to rotate counterclockwise.
The rack 17 is moved in the door opening direction. As a result, the link arm 12a shown in FIG. 1 is pushed leftward, and the pin 120a is pushed against the spring 121 from the right end of the groove 11a in the direction of the arrow. Then, as the spring 121 turns over, the pin 120
The step a is pressed against the left end of the groove 11a, and as a result, the step 5 rotates toward the outside of the vehicle and is held horizontally, thereby serving as a footboard for getting on and off the vehicle.

On the other hand, when closing the sliding door 4,
The movable second rack 17 is shifted downward from the fixed first rack 16, and the pinions 13 and 14 move together with the door in the closing direction (in the direction of arrow B in FIG. 3). As a result, the second pinion 14 first meshes with the second rack 17, and then the first pinion 13 meshes with the first rack 1.
6 and engages with the second rack 17, opposite to when the door is opened.
is moved upward in Figure 3. Therefore, the pin 120a shown in FIG. 1 is pulled in the right direction by the push-pull wire 19, contrary to the case when the door is opened, so that the step 5 stands up and the door 4 can be closed. stored in the body.

As explained above, the movable step of the present invention does not require a complicated link mechanism and can be operated by a gear mechanism, resulting in a compact structure and can be installed inside a vehicle. Furthermore, by selecting the location where the gear mechanism is installed, the step can be operated at an appropriate door opening degree.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a cross-sectional view of the device in the width direction, Fig. 2 is a perspective view of the main parts, and Fig. 3 is a cross-sectional view of the device in the width direction.
The figure is a cross-sectional view of the gear mechanism, and Figure 4 is the − of Figure 3.
FIG. 1... Floor, 4... Sliding door, 5... Step, 7, 8... Roller, 9... Guide rail, 11a, 11b... Guide groove, 12a, 12
b...Link arm, 121...Spring, 13,1
4... Pinion, 15... Gear case, 16...
Fixed rack, 17... Movable rack, 19... Push-pull wire.

Claims (1)

[Scope of utility model registration request] The step is pivotally supported under the floor of the vehicle entrance and exit, and when in use, it rotates outward from the vehicle and is held horizontally, and when not in use, it stands up and is stored at the bottom of the floor. A first pinion and a second pinion are installed at the tip of an arm that protrudes toward the interior of the vehicle from the bottom of a sliding door that opens and closes an entrance and rotate in unison, and the first pinion is fixed along the longitudinal direction of the vehicle body. a first rack that meshes with the first rack; and a first rack that is disposed opposite to the first rack so as to be movable in the longitudinal direction of the vehicle, and that meshes with the second pinion and is moved in the longitudinal direction by movement of the second pinion. a second rack;
A connecting member is provided which connects the rack and the step, and rotates the step in the standing direction when the second rack moves forward, and rotates the step in the horizontal direction when the second rack moves backward. A movable step for a vehicle, comprising: