JPH036782Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a vehicle entrance/exit door.
In order to reduce the protrusion outside the vehicle, many mechanisms have been devised in which the door or cover plate is opened and closed by moving parallel to the side of the vehicle body.
For example, there is one shown in Japanese Utility Model Publication No. 52-35607.

FIGS. 1 and 2 show the structure of a conventional example of such a passenger door, and the details thereof are as follows.

That is, with respect to the vehicle body 1, the door 2 is moved in the E direction parallel to the side surface of the vehicle body and opened to the state 2'. between the bracket 5 provided in
A rotating shaft 6 is provided in the vertical direction. Two arms 8, 8, which are curved in the same shape in the horizontal direction, are extended from the rotating shaft 6, and their ends are attached to a pin 12 in a bracket 9 provided at the center of the inner surface of the door 2.
It is rotatably supported by.

On the other hand, a lower arm 15 is provided below the step 14. One end of the lower arm 15 is rotatably supported on the vehicle body by a pin 17, and the other end of the lower arm 15 is connected to the vehicle body by a pin 18. door 2
It is rotatably supported on the front part of the lower edge of the.

Therefore, when the rotary shaft 6 is rotated in the F direction by the operation of the air cylinder 4, the arm 8 rotates and pushes out the door 2 into the state 8', and at the same time it is pivoted on the lower edge of the door 2. A certain lower arm 15 is interlocked and becomes the state 15'. That is, when the passenger door 2 is opened, the arm 8 and the lower arm 15 rotate about the rotating shaft 6 and the pin 17, respectively, and the two arms act as a parallel link, so that the arms 8' and 15' Then, the door 2 moves parallel to the side of the vehicle body and enters the 2' state.

However, in this structure, since the lower arm 15 is located below the step 14, that is, under the floor of the front overhang of the vehicle body, it may come into contact with a road curb or the like and be damaged. In addition, when the door is open as shown in Fig. 1, the lower arm 15' becomes a hindrance to getting on and off, and there is a risk of it being stepped on by passengers.
Therefore, it has the disadvantage that it requires more strength than a normal link.

In contrast, the present invention was devised to eliminate such drawbacks, and the details of its structure are explained as follows with reference to the embodiment shown in Figs. 3 to 5. There is.

That is, with respect to the vehicle body 21, the door 22 is moved parallel to the side surface of the vehicle body in the G direction to open the door to the state 22', and the door 22 is opened to the state 22', and the air cylinder 24 provided on the floor of the vehicle body and the wall of the vehicle body Bracket 25 provided in
A rotating shaft 26 is provided in the vertical direction between the two.
Two arms 28 and 29, each curved in the same shape in the horizontal direction, are extended from the rotating shaft 26, and the ends thereof are attached to brackets 31 and 32 provided on the inner surface of the door 22 with pins 33 and 29, respectively. 34 for free rotation.

Furthermore, a pulley 36 (this pulley does not rotate) is provided which is located on the axis of the rotating shaft 26 and fixed to the vehicle body side, that is, to the bracket 25. Also, a pin 3 stands upright in the middle of the curved part of the arm 28.
8 and 2 above and below with the same diameter as the pulley 36.
A pulley 39 formed with stepped grooves 39a and 39b is attached to freely rotate. A pulley 41 having the same diameter as the pulley 36 is attached to a pin 33 provided at the end of the arm 28.

The pulley 41 is on the boarding door side, that is, the bracket 31
It is fixed at In other words, the pulley 41 does not rotate relative to the door 22, but rotates relative to the end of the arm 28. and pulley 3
The belt 43 is passed between the groove provided in the pulley 39 and the groove 39a of the pulley 39.
A belt 44 is passed around between 9b and a groove provided in the pulley 41.

Therefore, due to the operation of the air cylinder 24, the rotating shaft 26
When it is rotated in the H direction, the arms 28 and 29 rotate and push out the door 22 into the states 28' and 29'. At this time, pulley 3
9. The position of the pulley 41 moves, but since the pulleys 39 and 41 roll without slipping against the belts 43 and 44 that are wound around them, the pulleys 39 and 41 always move in parallel.

That is, if the diameter of the pulley 36 in the longitudinal direction of the vehicle is 36D, and the diameter of the pulley 39 in the longitudinal direction of the vehicle is 39D, and the belt 43 does not slip in the groove of each pulley, the pulley 36
No matter how the relative position between the pulley 39 and the pulley 39 changes, 36D and 39D always face the same direction. Since the pulley 36 is fixed to the vehicle body, the diameter 39D of the pulley 39 always points in the longitudinal direction of the vehicle.

Similarly, if the diameter of the pulley 41 in the longitudinal direction of the vehicle is 41D, no matter where the pulley 41 is positioned relative to the pulley 39, the belt 4
4, the diameter 41D always points in the longitudinal direction of the vehicle. And the pulley 41 is the boarding door 2
2 side, when the arms 28 and 29 are rotated to push out the door 22, the diameter 41D of the pulley 41 is always maintained in the longitudinal direction of the vehicle, and therefore the door 22 is always attached to the side of the vehicle body when opening and closing. It will move in parallel.

Here, the arms 28 and 29 are curved to prevent them from hitting the vehicle body 21 when opening and closing the door 22, and the pulley 3
9 and belts 43 and 44 are provided, but the arm 2
8, 29 need not be curved, and if the belt can be passed directly between the pulley 36 and pulley 41, the intermediate pulley 39 and belts 43, 44 can be eliminated, resulting in an even simpler structure. can do.

Further, in the above description, the pulley and belt are combined, but if this is changed to a sprocket and chain combination, the operation of the interlocking mechanism becomes even more reliable. It goes without saying that the pulley and belt (sprocket and chain) may be covered with a cover to protect the occupants.

FIG. 6 shows another embodiment, in which arms 51 and 52 are extended from the rotating shaft 26. The arm 51 is pivotally attached to the upper part of the window glass stem 54 of the passenger door 22, and pulleys 36, 39, 41 and belts 43, 44 are arranged along this arm. If the interlocking mechanism is provided above, the interior of the vehicle will be clearer and wider, improving passenger comfort.

The present invention is constructed as described above, and does not require a link mechanism like the conventional lower arm, so there is no damage caused by contact with the ground, and it is easy to get on and off. It has excellent advantages.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the mechanism around the door of the conventional example, Fig. 2 is an enlarged perspective view showing the main parts of Fig. 1,
Figure 3 is a perspective view showing the mechanism around the door according to the embodiment of the present invention, Figure 4 is an enlarged explanatory view showing the door in Figure 3 in a closed state, and Figure 5 is the door in Figure 3. FIG. 6 is an enlarged explanatory view showing the opened state, and FIG. 6 is a perspective view showing a mechanism around the boarding door according to another embodiment of the present invention. 1... Vehicle body, 2... Boarding door, 6... Rotating shaft, 8
... Arm, 15 ... Lower arm, 21 ... Vehicle body, 26 ... Rotating shaft, 28, 29 ... Arm, 3
6, 39, 41...Pulley, 43, 44...Belt.

Claims (1)

[Scope of utility model registration request] An arm extends from a rotating shaft provided on the vehicle body side, a passenger door is pivoted to the end of the arm, a pulley is located on the axis of the rotating shaft and fixed to the vehicle body, and the end of the arm A vehicle door that is opened and closed by moving parallel to the side of a vehicle body by passing a belt between a pulley that is pivotally connected to the door and fixed to the side of the door.