JPH045161A - Door switching mechanism for cable suspension transporter - Google Patents

Abstract

PURPOSE:To unnecessitate gear cutting work and the like so as to reduce manufacturing mandays by constructing the automatic switching mechanism for opening/closing a door by a door switching lever brought into contact with a guide member on a cableway through a connecting member, not by rack and pinion combination but by lever and arm combination. CONSTITUTION:When a passenger car 1 arrives at a terminal station, a door switching lever 5 provided at a suspender 4 for suspending the passenge car 1 at a cable carrier 3 is engaged with a switching rail grounded on the terminal station so as to be guided upward, and this movement is transmitted to a door mechanism 7 through a connecting member 6. That is, the connecting member 6 is pushed out in the direction of an arrow mark D so as to press a driving member 41 onto the doors 45a, 45b side to slide them. Driving double-arm levers 44 are thereby rotated around axes 43 so as to rotate door switching double-arm levers 48 around axes 47 through spring arms 49. The doors 45a, 45b are opened laterally in the approximately sliding state by the rotation of these double-arm levers 48.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic door opening/closing mechanism for a cableway carrier used in a ropeway or the like.

[Prior art] For safety reasons, in cableway transportation such as a ropeway, the door of the carrier is securely kept closed except at the terminal station, and the door can be opened and closed automatically or manually only when the vehicle arrives at the terminal station. It needs to be something.

Recently, due to the demand for labor saving, most of the door opening/closing mechanisms are automatic opening/closing types, and there is no risk of the door hitting the passenger when opening/closing the door, allowing passengers to get on and off the vehicle smoothly.
In addition, the mechanism disclosed in, for example, Japanese Patent Application Laid-Open No. 61-85256, in which the door opens on both sides in a substantially sliding manner that does not take up much space, is used.

An example of the above-mentioned publication will be explained with reference to a diagram. As shown in FIG. 5, a passenger car 1 is guided by a rail 2 and suspended below a suspension machine 4 attached to a rolling cable carrier 3.

An opening/closing rail (not shown) in which a door opening/closing lever 5 provided on the suspension machine 4 is grounded to a terminal station.
The vertical movement is guided by the connecting member 6.
3% only at the terminal station, communicated to the door mechanism 7 described later through
8a and 8b are configured to open and close automatically.

As shown in Fig. 6, the door mechanism 7 installed at the bottom of the passenger car 1 opens and closes the door by rotating a supporting lever using a rack and pinion in consideration of safety and reliability. be.

That is, the first rack 9 provided at the tip of the connecting member 6
One end of the second rack 12 is pivotally connected to the first pinion 10 which is pivotally connected and supported by the control shaft 11 at a bearing point 13, and the second rack is connected to the rack portion at the other end.
Pinion 14 is engaged.

A supporting lever 16 is pivotally attached to the support shaft 15 of the second pinion 14, rotates in synchronization with the rotation of the second pinion 14, and is attached to the other end of the door 8a via a mounting bracket 17.
8b is fixed so that it can be opened and closed freely.

In this way, the left and right movement of the connecting member 6 is controlled by the two racks 9.
The doors 8a and 8b are opened and closed in a substantially sliding manner by the rotation of the supporting lever 16 via the first pinion 10 and the first pinion 10. At this point, a stopper 18 is attached to restrict rotation of the first pinion 1o.

In particular, the locking mechanism is such that when the door is completely closed, the bearing point 3 is located at the position where the control shaft 11 and the second rack 12 are in a straight line, that is, the so-called dead point. the first pinion 1 in the direction in which the door is further closed and tightened.
A stopper 18a in the closing direction is fixed at the position where o is rotated.

Therefore, even if the husband tries to open the door by force, the first pinion 10 and second rack 12 will rotate in the direction of closing the door, and the door will be completely locked.

Further, a coil spring 19 is interposed at the tip of the second rack 12 which is pivotally connected to the first pinion 10.
If a passenger or luggage is caught between the doors 8a and 8b, the coil spring 19 will absorb the stroke of the door and allow the door to be completely closed by the coil spring 19 after the obstacle is removed. It is configured so that it can be done.

Furthermore, a door mechanism that uses links (or levers) without using a rack and pinion has also been proposed.

As an example, the example disclosed in Japanese Patent Application Laid-Open No. 61-46754 is shown in Figure 1, in which a guide roller 21 provided at the bottom of the passenger car is moved by a guide plate (not shown) installed on the floor of the terminal station. This movement is of the type that directly rotates the arm 22.

The arm 22 includes a plurality of (three or more) arm portions 23 to 25.
The arm section 23 is provided with a guide roller 21, and the arm section 24 has an arm 28.29 at its tip end that rotates about a support shaft 30.31 via a rod 26.27. The arms 28 and 29 are configured to open and close the doors 34a and 34b by means of rods 32 and 33 attached to their ends.

[Problem to be solved by the invention] However, since the former door mechanism requires two sets of racks and pinions, ■ In order to suppress the reaction force in the normal direction of the pinion, a mechanism that constantly presses the rack against the pinion is required. This results in friction loss during operation. ■It is necessary to apply a lubricant such as grease to reduce the friction loss mentioned above, which requires a lot of maintenance. ■Requires a dedicated processing machine and requires a lot of man-hours. There were problems such as it was very expensive.

In addition, in the latter case, the length of the arm becomes longer due to the mechanism, and a particularly large force is applied to the arm portion of the arm. Therefore, the overall size needs to be increased, which may increase the weight.

Also, as a locking mechanism, a spring is provided with one end supported at the bottom and the other end attached to the arm, but since it is a spring, if you try to forcefully open the door from inside one of the cabins, you will not be able to apply more force than the spring pressure. There is a safety concern that the lock could be released by crossing the dead point.

In view of the above-mentioned problems, the present invention is not as complicated as the above-mentioned rack and pinion type, does not require manufacturing man-hours, does not require frequent maintenance, and is capable of reliable locking in terms of safety. To provide an inexpensive door opening/closing mechanism which can sometimes be unlocked from the outside and which can be used in conventional passenger cars as is.

[Means for Solving the Problems] The structure of the present invention for achieving the above object includes an automatic opening/closing mechanism that opens and closes the door via a connecting member by a door opening/closing lever that comes into contact with a guide member fixed on a cableway. a two-arm lever for opening and closing the door, one end of which is connected with a pin to the inside of the door and rotates around a pivot; and a two-arm lever for driving with a pivot located on the closing side of the door from the lever. a spring arm disposed between the other end of the two-arm lever for opening and closing the door and one end of the two-arm lever for driving, and a spring arm rotatably connected to the other end of the two-arm driving lever by a slide. , a driving member movably supported by the connecting member to rotate the driving arm lever, and when the door is closed, the connection point between the spring arm and the driving arm lever is at the pivot center of the lever;
It is characterized by being set so that it is located on the door side from the line connecting the spring arm to the connection point with the two-arm lever for opening and closing the door.

[Function] In the door opening/closing mechanism of the present invention having the above configuration, when the passenger car (carrier) arrives at the terminal station with the door closed (Fig. 1), the opening/closing rail 'M, When the lever is operated, the connecting member is pushed out and the driving member is pressed toward the door, thereby rotating the driving lever with both arms and rotating the lever with both arms for opening and closing the door via the spring arm.

The door opens by sliding left and right by rotating the two-arm lever for opening and closing the door. (Fig. 2) Next, when the passenger car advances and leaves the terminal station, the connecting member is pulled toward the front, so the driving member slides toward the front, thereby causing the door to open, opposite to when the door is opened. Since the driving member pulls the two-arm driving lever, the two-arm driving lever rotates in the opposite direction, and the two-arm lever for opening and closing the door is rotated in the opposite direction via the spring arm to close the door. . At this time.

The connection point between the spring arm and the driving arm lever (A
point) goes beyond the dead center and stops.

If an obstacle gets caught between the doors before the doors are completely closed, the drive member will slide until the doors are completely closed and will be stopped by the stopper. A spring installed in the spring arm is compressed, and the distance between both terminals of the spring arm is compressed by an amount corresponding to the obstacle, thereby absorbing the obstacle. When the obstacle is removed, the spring force will cause the door to close completely.

When the drive member slides to the completely closed position, the A point once exceeds the dead center, and the door is completely closed, the locking mechanism will work completely, even if you try to force the door open from inside the cabin. It is safe and will not open.

[Embodiment] The present invention will be explained in detail using a preferred embodiment with reference to FIGS. 19 to 5.

The door opening/closing mechanism of the present invention is installed at the lower part of the floor of the passenger car 1 shown in FIG. The tip of the member 6 is attached to a drive member 41 that is guided by the floor and slides back and forth.

A bearing point 42 is provided at the end of this drive member 41.
One arm 44a of the driving double-arm lever 44, which is rotated around the shaft 43 by a and 42b, has a long hexagonal portion 44 formed therein.
It is slidably and rotatably pivotally mounted via c. In addition,
The other arm 44b of the two-arm driving lever 44 is connected to the - arm 44.
It is formed at a constant angle with a.

45a and 45b are doors that are opened and closed by sliding on both sides in a substantially sliding manner, and at the lower end of the inner side there is an arm 48a of a double-armed lever 48 for opening and closing the door that rotates around a shaft 47 via a mounting bracket 46. is pivotally mounted, and the other arm 48b is connected to the above-mentioned arm 48.
It is formed at a constant angle with a. The pivot shaft 43 of the drive lever 44 is located closer to the closing side of the doors 45a, 45b than the pivot 47 of the door opening/closing lever 48.

Reference numeral 49 denotes a spring arm, which connects the two-arm lever 44 for driving.
the other arm 44b and the other arm 4 of the door opening/closing double-arm lever 48;
8b.

The spring arm 49 and the drive lever 44 are placed closer to the door 45 from the line connecting the center of the pivot shaft 43 of the drive lever 44 and the connecting point B of the spring arm 49 with the door opening/closing lever 48. Connection point A of arm lever 44
It is positioned so that there is a dead center.

Further, as shown in FIG. 4, the spring arm 49 has shafts 52a and 52 in the cylinder part 51.
A spring 54 is interposed between the inner wall of the cylinder portion 51 and a plate 53 which is divided into two halves and fixed to one shaft 52a, so that the entire length of the arm is extendable and retractable.

The door opening/closing mechanism of the present invention configured as described above operates as follows.

First, when the passenger car 1 arrives at the terminal station with the door closed (Fig. 1), the connecting member 6 is pushed forward in the direction of the arrow by the operation of the opening/closing rail and the door opening/closing lever 5 as described above. Then, the drive member 41 is pressed and slid toward the doors 45a and 45b.

As a result, the driving double-arm lever 44 rotates around the shaft 43, and the door opening/closing double-arm lever 48 rotates around the shaft 47 via the spring arm 49.

The doors 45a, 4 are opened by rotating the door opening/closing lever 48.
5b opens in a substantially sliding manner from side to side.

In the fully opened state, the driving member 41 contacts the stopper 55, resulting in the state shown in FIG. 2. Next, when the passenger car advances and leaves the terminal station, the connecting member 6 moves forward in the direction of the arrow. Since it is pulled in the direction of E, the driving member 41
slides toward you.

Therefore, contrary to when the door is opened, the bearing points 42a and 42b of the driving member 41 slide and pull the long hole portion 44c of the driving arm lever 44, so that the lever 44
rotates in the opposite direction, and the two-arm levers 48a and 4'8b for opening and closing the door are rotated in the opposite direction via the spring arm 49 to close the doors 45a and 45b. At this time, the previous VIA
The point rotates in the direction of arrow F, goes beyond the dead center and stops.

If an obstacle such as a passenger or baggage gets caught between the 3% 45a and 45b before the door is completely closed, the drive member 41 will be in the state where the door is completely closed as shown in Figure 3. The spring 54 inserted in the cylinder portion 51 of the spring arm 49 is compressed, and the spring is moved by an amount corresponding to the obstacle. This is absorbed by shrinking between both terminals of the arm 49. If the obstruction is removed, the force of the spring 54 will cause the door to close completely.

When the drive member 41 slides to the completely closed position, the A point once exceeds the dead center, and the door is completely closed, the locking mechanism is fully activated, even if you force the door to open from inside the cabin. It is safe and will not open.

In addition, W, where the ropeway has stopped due to an accident, etc.
In the event of an emergency, turning the handle (not shown) at the outside bottom of the cabin to the unlock side will cause the lock release lever (not shown) to push the point A beyond the dead center to the door opening side. There is also a mechanism that allows the door to be pushed open by hand by rotating to release the lock.

Further, the two-arm lever 48 for opening and closing the door and the doors 45a, 45b are pivotally connected via the mounting bracket 46, but if the mounting bracket 46 is formed with an elongated hole so as to be slidable and rotatable, the doors 45a, 45b can be attached to the door 45a, 45b. By adding the guide portion, the doors 45a and 45b can be slid more parallel to the cabin wall.

・[Effects] As described above, the present invention is an automatic opening/closing mechanism that opens and closes a door via a connecting member by a door opening/closing lever that comes into contact with a guide member fixed on a cableway, in which one end is connected with a pin to the inside of the door. a two-armed lever for opening and closing the door which rotates around a pivot; a two-armed driving lever disposed with a pivot on the door closing side from the lever; and a two-armed lever for opening and closing the door. A spring arm disposed between one end of the two-arm drive lever is slidably and rotatably connected to the other end of the two-arm drive lever, and the two-arm drive lever is connected by the connecting member to the other end of the two-arm drive lever. and a drive member supported so as to be rotatable, and when the door is closed, the connection point between the spring arm and the drive lever is aligned between the pivot center of the lever and the lever with both arms for opening and closing the door. The structure is set so that it is on the door side from the line connecting the connection point, so ■ By eliminating the rack and pinion combination and using a lever arm combination, there is no need for special processing machines such as gear cutting. , manufacturing man-hours can be reduced ■Since it does not use a mechanism that generates a reaction force in the normal direction of the pinion, unlike the combination of rank and pinion, there is no risk of friction loss during operation, and therefore there is no need for frequent use of grease, etc. No lubrication is required, making it almost maintenance-free. ■Special parts can be used by providing a locking mechanism that places the connection point between the lever and arm beyond the dead center when the door is closed. In the case of double-swing doors, the two-arm lever for opening and closing the door, the two-arm lever for driving, the spring arm, etc. are the same for both left and right sides. Since it can be used for many purposes, it has excellent effects such as reducing parts costs and management costs.

[Brief explanation of the drawing]

Figure 1 is a schematic plan view of the door opening/closing mechanism of the present invention, showing when the door is closed, Figure 2 is a diagram when it is open, and Figure 3 is a diagram showing when an obstacle is caught between the left and right doors. The figure shown in FIG. 4 is a longitudinal sectional view of a spring arm that constitutes the door opening/closing mechanism of the present invention.
FIG. 5 is an overall perspective view of a cableway carrier to which the door opening/closing mechanism of the present invention is applied, and FIGS. 6 and 7 are views showing conventional door opening/closing mechanisms for a cableway carrier. 1... passenger car, 2... rail, 3... rope carrier, 4...
・Suspension machine, 5... Door opening/closing lever 6... Connecting member,
41... Drive member, 42a, 42b... Bearing point, 43...
Shafts, 44a, 44b...Driving arm levers 45a, 4
5b...Door, 46...Mounting bracket, 47...Shaft. 48a, 48b...Double-arm lever for opening/closing the door 49...Spring arm, 51...Cylinder part, 52a, 52
b...Shaft, 53...Plate, 54...Spring, 55...Stopper. Figure 3 Patent applicant Press Kogyo Co., Ltd. Figure 4

Claims (1)

[Claims] In an automatic opening/closing mechanism in which a door opening/closing lever that contacts a guide member fixed on a cableway opens and closes the door via a connecting member, one end of the door is connected with a pin to the inside of the door and rotates around a pivot. a two-arm lever for driving, a two-arm driving lever disposed with a pivot on the closing side of the door from the lever, and an end between the other end of the two-arm lever for opening and closing the door and one end of the two-arm driving lever. a spring arm disposed on the spring arm; and a drive member slidably and rotatably connected to the other end of the two-arm drive lever, and movably supported by the connecting member to rotate the two-arm drive lever. When the door is closed, the connection point between the spring arm and the drive lever is located on the door side from the line connecting the pivot center of the lever and the connection point between the spring arm and the door opening/closing lever. A door opening/closing mechanism for a cableway carrier characterized by the following settings.