JPH0324378B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a step for getting on and off a vehicle, and particularly to a step that is moved in and out in conjunction with opening and closing of a door.

(Prior art) As a conventional vehicle step, for example,
The one described in Japanese Patent No. 58-2172 is known.

This vehicle step is provided with a step that also serves as a bumper side protector on the vehicle body so that it can be moved in and out by rotation, and the step is in the retracted state when the door is fully closed, and the step is fully extended when the door is fully open. It was linked to the opening and closing of the door by an interlocking mechanism.

(Problem to be solved by the invention) However, this conventional vehicle step
Because the step was linked to the opening and closing of the door between the fully closed and fully open states, the following problems arose.

(b) The step cannot be fully extended unless the door is fully opened, so for example, if there is no space in front of the door and the door cannot be opened wide, the step cannot be used.

(b) Because the door and steps are always linked,
For example, if a person is on the steps and closes the door from fully open to partially open, the steps will move back and forth, making the footing unstable (in particular, the person's body on the steps will cause the door to close. near the fully opened door).

Conversely, if a person gets on the step that is half-extended, the door will not open, and if force is applied to the step toward the exit side, the door will close, causing the door to open and close unexpectedly. There is.

(Means for Solving the Problems) The present invention has been made by focusing on the above-mentioned problems of the conventional art. In this state, it is possible to prevent the step from moving even if force is applied to the step, and it is also possible to prevent the step from moving even when the door is rotated from a half-open state to a fully open state. A further object of the present invention is to provide a step for a vehicle that can prevent the operating force from becoming too large when moving the step in and out in conjunction with a door.

To achieve this objective, the vehicle step of the present invention includes a door rotatably attached to the vehicle body.
A step is attached to the lower position of the door so as to be slidable in and out of the vehicle body, a drive shaft is rotatably attached to the vehicle body at a position near the door and the step, and an end position on the rotation center side of the door is attached. A door stay is attached between the step and the drive shaft so that the drive shaft can be rotated in conjunction with the opening/closing rotation of the door, and between the drive shaft and the step, the door stay can be used to rotate the door from a fully closed state to a predetermined opening degree. A link mechanism is provided that slides the step in and out in a range from a storage position to a use position in conjunction with the rotation of a drive shaft when the door stay is rotated within a range, and the door stay is connected to a stay whose one end is connected to the drive shaft. A lever, a stay case whose one end is rotatably connected to the other end of the stay lever, and a stay case which is slidably inserted from one end of the stay case and whose protruding end from the stay case is rotatably connected to the door. The stay rod is engaged between the stay case and the door at an angle of inclination of the stay case with respect to the door in the range from the fully closed state to the predetermined opening degree. An interlock release mechanism is provided that prevents the door from protruding from the case and disengages when the door is opened beyond a predetermined opening degree. The vehicle body is provided with a step stopper that comes into contact with the stay case to restrict the movement of the stay case in the axial direction.

(Function) When the door is opened from the fully closed state, the door stay rotates the drive shaft in conjunction with the rotation of the door, and the rotation of the drive shaft operates the link mechanism, causing the step to move. Slide out.

The step slides to the use position in conjunction with the door opening to a predetermined half-open state. Therefore, the step can be used without fully opening the door.

At this time, the base end of the stay case of the stay lever comes into contact with the step stopper, and movement in the axial direction is restricted.

At the same time, the interlock release mechanism is disengaged, allowing the stay rod to slide in the direction of protrusion relative to the stay case, and when the door is further opened, the stay rod slides in the direction of protrusion from the stay case. , the stay case is maintained with its proximal end in contact with the step stopper.

In this way, when the door is opened more than the predetermined opening degree, one end of the stay case does not move, so the stay lever cannot rotate, and therefore the drive shaft cannot rotate. , the link mechanism is not operated and no operating force is input to the step.

In addition, when the door is opened wider than a predetermined opening degree, the base end of the stay case is in contact with the step stopper, so even if the door is opened or closed within that range, the drive axis will not rotate and the steps will move in and out. It won't slide.

Conversely, even if force is applied to the step in the sliding direction, the input to the step will not be transmitted to the door because the stay case movement is restricted by the step stopper as described above. , the door will not open or close due to the input to the step.

Next, when closing the door from the fully open position,
Since the axial movement of the stay case is restricted, the stay rod slides in the direction of retraction into the stay case in conjunction with the rotation of the door.

When the door reaches a predetermined opening degree, the retraction of the stay rod is completed, and at the same time, the interlock release mechanism becomes engaged, and the stay rod and stay case become integrated.

Then, when the door is further closed, the stay case rotates in conjunction with this, the movement restriction by the step stopper is released and the stay case moves, thereby causing the stay lever to rotate and the drive shaft to rotate as well.

Therefore, when the link mechanism is operated and the step slides in and out, and the door is fully closed, the step is also placed in the retracted position.

As described above, the step slides in and out in conjunction with the rotation of the door from the fully closed position to the half-open position of a predetermined degree of opening. Since the structure is such that the transmission is transmitted to the link mechanism via the door stay attached to the end, a lever ratio can be obtained, and the link mechanism can be operated with a small operating force.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
In describing this embodiment, a vehicle step provided on the passenger side door of an automobile will be explained.

First, the configuration of the embodiment shown in FIGS. 1 to 3 will be described.

A is a vehicle step according to an embodiment of the present invention,
Slide step 10, door 20, interlocking mechanism 3
0, an interlock release mechanism 40, and a step stopper 50.

The slide step 10 is used by protruding outward from the vehicle body when getting on and off the vehicle.
Fixed step 102 formed one step lower than 1
It is slidably installed on the outside of the vehicle below.

The slide step 10 is attached to the vehicle body 100 with step attachment members 11 and 12, and guide rails 14 and 1 are attached to support members 13 and 13 provided on the step attachment members 11 and 12, respectively.
It is attached via 4.

The guide rail 14 is connected to the step side rail 1.
41 and a support member side rail 142.

The door 20 is provided so as to be able to open and close a door opening 21 formed next to a passenger seat (not shown). Fully closed position 20 shown in Figure 2
It is provided so as to be rotatable from a to a fully open position 20c shown in FIG.

The interlocking mechanism 30 moves the slide step 10 in and out of the vehicle body 100 in conjunction with the opening and closing of the door 20.
1 and a link mechanism 32 as the main components, and their interlocking is set so that the slide step 10 is slid from a fully in to a fully out state when the door 20 is rotated from a fully closed state to a partially opened state. There is.

The door stay 31 connects the vehicle body 100 and the door 20.
and the link mechanism 32
is connected to the link mechanism 3 to control the rotation of the door 20.
This door stay 31 includes a stay lever 311, a stay case 312, and a stay rod 313.

The stay lever 311 has one end connected to the drive shaft 3.
3, and is provided so as to be rotatable together with the drive pivot 33 relative to the pivot bracket 34 attached to the vehicle body 100, and the other end is pivotably attached to the case protrusion 314 of the stay case 312. .

The stay case 312 and stay rod 313
The stay rod 313 is provided so as to be able to move in and out of the stay case 312.

The projecting end of the stay rod 313 is rotatably attached to the end of the door 20 on the pivot shaft 22 side by a door stay mounting bracket 315.

The link mechanism 32 converts the rotation of the door stay 31 into a sliding motion and transmits it to the slide step 10, causing the slide step 10 to slide.
2, first slide lever 323, second link 32
4. A second slide lever 325 is provided.

The drive lever 321 is connected to the door stay 31.
The drive lever 321 has one end fixed to the drive shaft 33 and is provided to be rotatable together with the drive shaft 33, and the other end is connected to the first link 322. It is rotatably attached to the shaft.

The first link 322 transmits the rotation of the drive lever 321 to the first slide lever 323, and the first link 322 is for transmitting the rotation of the drive lever 321 to the first slide lever 323.
It is pivoted to 3.

The first and second slide levers 323, 325
slides the slide step 10 by rotation, and both slide levers 323,
325 is rotatably attached to lever attachment members 326 and 326 provided on the vehicle body 100, respectively, and is formed so as to be interlocked with the second link 324, and both slide levers 32
One end of the pin 325 is slidably inserted into a long hole 15, 15 formed at the vehicle inner side end of the slide step 10 so that the longitudinal direction extends across the front and rear of the vehicle.
7,327.

Note that both the slide levers 323 and 325 are rotated in conjunction with each other by transmitting the rotation of the drive lever 321 to the first slide lever 323 via the first link 322.

Further, the first slide lever 323 is provided with a spring 328 that rotates and biases the slide step 10 in the direction of protruding and sliding, and one end of this spring 328 is provided on the step mounting members 11 and 12. It is attached to a spring bracket 16.

The interlock release mechanism 40 is provided in the interlock mechanism 30 and releases the interlock between the door 20 and the slide step 10 when the slide step 10 is fully extended. Striker 41 provided on stay case 312 and door stay mounting bracket 3
15 and a hook 42 provided at the bottom.

The hook 42 and the striker 41 are arranged so that the door 20 is in the fully closed position 2, as shown in FIGS.
0a to the half-open position 20b, and the door 20 is moved from the half-open position 20b to the fully open position 20.
The mesh is disengaged between c.

Therefore, when the door 20 is in the range from the fully closed position to the half open position, the hook 42 is opened and closed as the door 20 is opened and closed.
The door stay 31 is pulled by the door 2, and the stay lever 311 connected to one end of the stay case 312 is rotated about the drive shaft 33.
In the range from the half-open position (0) to the fully open position, the stay rod 313 advances, the position of one end of the stay case 312 remains unchanged, and the stay lever 311 is not rotated.

Note that the hook 42 is biased to rotate in the engaging direction by a spring (not shown), and
Rotation due to the bias of the spring is regulated depending on whether the stopper portion 421 is brought into contact with the door 20 or completely engaged with the striker 41.

The step stopper 50 restricts the slide step 10 from moving in and out when the door 20 and the slide step 10 are not in an interlocked state due to the operation of the interlock release mechanism 40. The step stopper 50 is provided on the vehicle body 100, and When the stopper surface 51 is formed and the interlocking mechanism 30 is in a non-interlocking state, the case protrusion 31 of the door stay 31
A stopper surface 51 is arranged so as to come into contact with the tip of 4.

Next, the operation of the embodiment will be explained.

First, a case will be described in which the door 20 is rotated from the fully closed position to the fully open position.

When the door 20 is opened and rotated, the stay case 31
2 is pulled toward the door 20 by the engagement between the hook 42 and the striker 41, and the stay case 312
The end of the stay lever 311 side is connected to the drive shaft 33
The stay lever 3 is rotated at the same time.
11 is rotated about a drive shaft 33 as a support shaft.

By the rotation of the drive shaft 33, the link mechanism 32
The drive lever 321 is rotated and the first link 32
2 is pulled, the first slide lever 323 is rotated in the direction of protruding and sliding the slide step 10, and the second slide lever 325 is also moved to the second position.
They are interlocked by link 324.

The first and second slide levers 323, 325
Due to the rotation of the slide step 10, the vehicle body 10
0 is projected outward.

After that, this slide step 10 moves to the second and third slide steps.
The door 20 is fully extended at the half-open position 20b shown in the figure, and when the door 20 is rotated to the half-open position, the hook 42 and the striker 41 change due to the angle change of the stay case 312 with respect to the door 20. The mesh is disengaged, and the door 20 and slide step 10
At the same time, the stay case 31
The case projecting piece 314 provided at one end of the slide step 10 comes into contact with the stopper surface 51 of the step stopper 50, the link mechanism 32 becomes locked, and the slide step 10 is restricted from moving in or out.

As described above, between the half-open position 20b and the fully open position 20c of the door 20 shown in FIG.
Even if the slide step 10 is opened or closed within the range between c and c, the slide step 10 remains fully extended and is restricted from moving in or out.

Next, a case will be described in which the door 20 is closed from the fully open position 20c to the fully closed position 20a.

When the door 20 is rotated to close from the fully open position 20c, the door stay 31 closes the stay rod 313 because the case protrusion 341 of the stay case 312 is in contact with the stop surface 51 of the step stopper 50.
is rotated about the pivot point between the stay lever 311 and the stay case 312 while being moved into and out of the stay case 312.

Furthermore, from the fully open position 20c of the door to the half open position 2
Until 0b, the case protrusion 314 of the stay case 312 is in contact with the step stopper 50, so the drive lever 321 does not rotate, so the link mechanism 32 does not operate and the step 10 continues to remain fixed. ing.

When the door 20 is closed to the half-open position 20b, the hook 42 is engaged with the striker 41, the door 20 and the slide step 10 are interlocked, and the case protrusion 314 of the stay case 312 is moved to the stopper surface. 51, the link mechanism 32 becomes movable, and the restriction on retraction of the slide step 10 is released.

After that, when the door 20 is closed, the interlocking mechanism 3
0, the slide step 10 is also moved in and out, and when the door 20 is in the fully closed position 20a, the slide step 10 is in the fully closed state.

As described above, the slide step 10 slides in and out in conjunction with the opening and closing of the door 20. At this time, input to the door 20 is transmitted from the end of the door 20 on the rotation shaft 22 side to the interlocking mechanism 30. Therefore, a large lever ratio can be ensured, thereby requiring less operating force for interlocking the slide step 10.

(Effects of the Invention) As described above, according to the vehicle step of the present invention, since the step is fully extended before the door is fully opened, the step can be used without fully opening the door. The step can be used even if there is no space in front of the door to fully open the door, making it easier to use.

In addition, an interlock release mechanism is provided that releases the sliding restriction between the stay case and the stay rod when the door is in the half-open state at a predetermined opening when the step is fully extended. Since a step stopper is provided that comes into contact with the end of the stay case and restricts the axial movement of the stay case, when the step is fully extended, even if the door is opened or closed from a predetermined opening to a half-open position,
The steps will not slide in and out, and
Even if the step itself applies force in the retracting direction, the step will not slide in or out, which prevents the step from becoming unstable and prevents the door from closing unexpectedly due to input to the step. is obtained.

Furthermore, since the input to the door is input to the link mechanism from the end on the side of the door's center of rotation, a large lever ratio can be ensured, which reduces the need for operating force to interlock the steps. , the effect of good operability can be obtained.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing a vehicle step A according to an embodiment of the present invention, and FIGS. 2 and 3 are plan views showing the operation of the step A according to the embodiment. 10...Slide step (step) 20...
... Door, 31 ... Door stay, 32 ... Link mechanism, 311 ... Stay lever, 312 ... Stay case, 313 ... Stay rod, 33 ... Drive axis, 40 ... Interlock release mechanism, 50 ... Step stopper, 100...Car body.

Claims (1)

[Scope of Claims] 1. A door is rotatably attached to the vehicle body, a step is attached below the door so as to be slidable in and out of the vehicle body, and a driving step is attached to the vehicle body at a position near the door and the step. a pivot is rotatably attached, a door stay is attached between an end position on the rotation center side of the door and the drive pivot so that the drive pivot can be rotated in conjunction with opening/closing rotation of the door; Between the pivot shaft and the step, the step slides in and out from the storage position to the use position in conjunction with the rotation of the drive shaft when the door is rotated from the fully closed state to a predetermined opening degree. A link mechanism is provided, and the door stay is configured to include a stay lever having one end connected to a drive shaft, a stay case having one end rotatably connected to the other end of the stay lever, and a sliding portion from one end of the stay case. and a stay rod whose protruding end from the stay case is rotatably connected to the door, and between the stay case and the door, the door changes from a fully closed state to the predetermined opening degree. An interlock release mechanism is provided which engages to prevent the stay rod from protruding from the stay case at an angle of inclination of the stay case with respect to the door within a range of . A step for a vehicle, characterized in that a step stopper is provided on the vehicle body, the step stopper coming into contact with the proximal end of the stay case to restrict the movement of the stay case in the axial direction when the step is in the range of opening from a predetermined opening to fully open.