JP5586265B2 - Elevator door legs - Google Patents

Description

  The present invention relates to an elevator door that opens and closes an elevator hall or a car doorway.

  Legs of elevator doors with a conventional structure protrude downward from the lower edge of the door and are slidably received in the sill groove, and slide in the sill groove as the door opens and closes. It has the function to guide along. While the door is required to open and close smoothly, the door is configured in such a dimensional relationship that the door guide leg does not easily come off the sill groove even if a foreign object collides (see, for example, Patent Documents 1 to 3).

Japanese Patent Laid-Open No. 11-240683 JP 2004-18262 A JP 2005-1831 A

  In such a conventional elevator door leg, if the door leg may come off the sill groove once there is an abnormal collision of the object with the door, the guide leg is returned to the sill groove. It took time to restore the door so that it could be opened and closed smoothly again.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an elevator door leg that can prevent the elevator door from coming off the sill groove even if it receives an abnormal collision due to a foreign object.

  The legs of the elevator door according to the present invention are provided between the shoe main body and the side wall of the sill groove on both sides of the shoe main body, which is attached to the elevator door and inserted into the sill groove. First and second guide plates pivotally attached to the shoe body so that at least a part thereof is separated from the shoe body, and the first and second guides pivotally attached to the shoe body. A lever provided between the plates, which expands one displacement of the first and second guide plates with respect to the shoe body by a lever action and converts the displacement into the other displacement of the first and second guide plates A mechanism, and when one of the first and second guide plates is pressed against the side wall of the sill groove and close to the shoe body, the first and second guide plates There is characterized in that the said lever mechanism is separated from the shoe body in the predetermined ratio are to be pressed to the side wall of the sill groove.

  The legs of the elevator door of the present invention are not easily detached from the sill groove even if a foreign object collides with the elevator door.

FIG. 3 is a schematic front sectional view showing Embodiment 1 of the guide shoe for the elevator door according to the present invention, taken along line I-Ini in FIG. 2. It is a schematic sectional drawing in alignment with line II-II of FIG. It is a schematic sectional drawing in alignment with line III-III of FIG. It is a figure which shows the state of the guide shoe of a door when a thing collides with the door of FIG. 2 from the left side of FIG. 2, and the door moved to the right in the sill groove. It is a figure which shows the state of a guide shoe when the door of FIG. 2 moves to the left in FIG. It is a figure which shows the state of a guide shoe when the door of FIG. 3 moves to the right in the figure within a sill groove. It is a figure which shows the state of a guide shoe when the door of FIG. 3 moves to the left in the figure within a sill groove. It is a schematic front sectional view similar to FIG. 2 showing Embodiment 2 of the guide shoe for the elevator door of the present invention.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to describe the present invention in more detail, an embodiment of an elevator door leg according to the present invention will be described below with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
1-3, the leg of the elevator door of the present invention is attached to the lower edge of the door 1 that opens and closes the elevator hall or the entrance of the car and is received in the sill groove 3 of the sill 2. When the door 1 is opened and closed, the door 1 is guided by sliding along the threshold groove 3. The elevator door leg includes a shoe body 5 having a generally rectangular parallelepiped shape, which is attached to the elevator door 1 by a mounting bracket 4 and is inserted into the sill groove 3. Both side surfaces 6 and 7 of the shoe body 5 are provided between the shoe body 5 and the side walls 8 and 9 of the sill groove 3 and are pivotally attached to the shoe body 5 so that at least a part thereof is separated from the shoe body 5. A rectangular plate-shaped first guide plate 11 and second guide plate 12 pivotally attached by a pivot point 10 which is a pin are provided.

The first and second guide plates 11 and 12 are pivotally supported at a predetermined position by a pivot point 10 which is spring-biased by a spring 14 in a direction approaching the side wall 8 or 9 of the threshold groove 3 facing the upper end 13. And is biased by a spring 16 in a direction approaching the side wall 8 or 9 of the sill groove 3 facing the lower end 15 and held at a predetermined position. That is, the shoe main body 5 is provided with a cylindrical spring receiver 17 that accommodates the springs 14 and 16 at positions corresponding to the four corners of the first guide plate 11. Is provided with a piston-like sliding member 18 which is biased and slidable by a spring 14, and is slidably provided by a spring 16 in a spring receiver 17 on the lower end 15 side. A piston-like sliding member 19 is provided. First and second guide plates 11 and 12 are connected to two sliding members 18 on the upper end 13 side via a pivot point 10 which is a pivot pin. The two spring-biased sliding members 19 on the lower end 15 side merely abut against the lower ends 15 of the first and second guide plates 11 and 12. Accordingly, the upper end 13 side of the first and second guide plates 11 and 12 is elastically supported so that it can move in the width direction toward the side wall 8 or 9 of the sill groove 3 of the shoe body 5 with respect to the shoe body 5. It is possible to rotate around the pivot point 10 at the same time. The lower end 15 side of the first and second guide plates 11 and 12 can be completely separated from the shoe body 5 and spread outward.

  The elevator door legs are also pivotally attached to the shoe body 5 by pins 20 and are provided between the first and second guide plates 11 and 12, and the first and second guide plates 11 for the shoe body 5. And a lever mechanism 21 that enlarges one displacement of the first and second guide plates at a predetermined magnification by lever action and converts the displacement into the other displacement of the first and second guide plates 11 and 12. The lever mechanism 21 moves relative to the shoe body 5 when one of the first and second guide plates 11 and 12 is pressed against the side wall 8 or 9 of the sill groove 3 and comes close to the shoe body 5. The amount is increased by a predetermined magnification, and the other of the first and second guide plates 11 and 12 is separated from the shoe main body 5 and acts so as to be pressed against the side wall 8 or 9 of the sill groove 3. .

The lever mechanism 21 includes a first end 22 pivotally attached to the shoe body 5 by a pivot pin 20 at a position near the pivot point 10 of the first and second guide plates 11 and 12, and the first guide plate 11. the two end 2 3, substantially horizontally in contact with the position near the lower end 15 the upper end 13 of the second guide plate 12 which acts substantially horizontal force in contact with the position near the upper end 13 lower end 15 of the And a third end 24 on which the force is applied. The ratio of the movement distances of the second end 23 and the third end 24 when the lever mechanism 21 rotates is the effect of the second end 23 and the third end 24 on the pivot point 10 of the first end 22 of the lever mechanism 21. The ratio of the distance to the line is, and in the example shown, the ratio of the moving distance is about 1: 6. Further, the distance from the pivot point 10 of the first guide plate 11 to the third end 24 of the lever mechanism 21 and the distance to the lower end 15 contacting the side wall 8 of the sill groove 3 of the first guide plate 11 The ratio is about 5: 6. Further, the ratio of the distance from the pivot point 10 of the second guide plate 12 to the second end 23 of the lever mechanism 21 and the distance to the lower end 15 contacting the side wall 9 of the second guide plate 12 is: It is about 1: 6. In other words, the lever mechanism 21 is configured so that when one of the first and second guide plates 11 and 12 is pressed against the side wall 8 or 9 of the sill groove 3 and approaches the shoe body 5, The movement amount is increased by about 6 times, and the other of the first and second guide plates 11 and 12 is separated from the shoe main body 5 and pressed against the side wall 8 or 9 of the sill groove 3.

  In the illustrated example, a pair of lever mechanisms 21 are provided between the first and second guide plates 11 and 12 so as to be symmetrical with each other. That is, the lever mechanism 21 is arranged side by side in the extending direction of the sill groove 3 as shown in FIG. 1, and the posture of the lever mechanism 21 is symmetrical to each other as shown in FIGS. Has been placed.

  FIG. 4 shows a state of the lever mechanism 21 of FIG. 2 when an object collides with the elevator door 1 from the left side of FIG. 2 and the door 1 moves to the right in the sill groove 3, and FIG. The state of the lever mechanism 21 of FIG. 2 when the elevator door 1 moves to the left in FIG. 2 is shown. That is, when the door 1 is moved from the left to the right due to an object colliding with the elevator door 1, the door leg is also moved to the right in the threshold groove 3, and the right first guide plate in FIG. 11 hits the side wall 8 of the sill groove 3 and is pressed against the side surface 6 of the shoe body 5 against the spring acting force of the springs 14 and 16. At this time, the first guide plate 11 also abuts on the second end 23 of the lever mechanism 21, and the lever mechanism 21 is rotated clockwise in FIG. 4 around the pivot pin 20 of the first end 22, The third end 24 protrudes greatly from the left side surface 7 in FIG. The protruding third end 24 of the lever mechanism 21 pushes the second guide plate 12 from the inside to rotate it clockwise around the pivot point 10, and the lower end 15 of the second guide plate 12 is connected to the threshold groove 3. It is possible to prevent the door leg from coming out of the sill groove 3 by being pressed by the left side wall 9 in FIG. 4.

  As shown in FIG. 5, when the elevator door 1 is moved from right to left, the leg of the door hits the side wall 8 of the sill groove 3 with the second guide plate 12 on the left side of FIG. The springs 14 and 16 are pressed against the side surface 7 of the shoe body 5 against the spring acting force. At this time, the second guide plate 12 also abuts on the third end 24 of the lever mechanism 21 to rotate the lever mechanism 21 counterclockwise in FIG. 5 around the pivot pin 20 of the first end 22. The second end 23 protrudes from the right side surface 6 in FIG. Thus, the second end 23 of the lever mechanism 21 protruding from the shoe body 5 pushes the first guide plate 11 from the inside to rotate it counterclockwise around the pivot point 10, and lowers the lower end of the first guide plate 12. 15 is pressed by the right side wall 8 in FIG. 4 of the sill groove 3, and the door leg can be prevented from coming out of the sill groove 3.

  FIG. 6 shows the state of the lever mechanism 21 of FIG. 3 when an object collides with the elevator door 1 from the left side of FIG. 3 and the door 1 moves to the right in the sill groove 3. The state of the lever mechanism 21 of FIG. 3 when the elevator door 1 moves to the left in FIG. 3 is shown. The lever mechanism 21 shown in FIG. 3 has the same configuration as that of the lever mechanism 21 shown in FIG. 2 and is disposed so that only the postures are symmetrical with each other. Therefore, the operation of the lever mechanism 21 shown in FIG. As shown in FIGS. 6 and 7, they are the same except that they are symmetrical with respect to the operation of the lever mechanism 21 of FIG.

  With such a structure, when the door 1 is pushed and the leg of the door is pressed against the sill groove 3, the first and second guide plates 11 and 12 spread, and the door 1 The leg width is widened and stretched, making it difficult for the door leg to come off the threshold groove 3. Further, since the first and second guide plates 11 and 12 are elastically supported by the springs 14 and 16, respectively, even if the side surface portion is pushed by a force within a normal range during normal use, Since the door legs are not wide and do not stretch, the normal use state can be maintained.

Embodiment 2. FIG.
The elevator door leg shown in FIG. 8 is provided with a lever mechanism 21 that is symmetric in itself. Other configurations may be the same as those described in the first embodiment.

  The elevator door legs illustrated and described above are merely examples and can be modified in various ways, and the features of each specific example can be used altogether or selectively combined.

  The present invention can be used for elevator door legs.

  1 house, 2 sill, 3 sill groove, 4 bracket, 5 shoe body, 6 side surface, 7 side surface, 8 side wall, 9 side wall, 10 pivot point, 11 first guide plate, 12 second guide plate, 13 upper end , 14 lower end, 15 lower end, 16 spring, 17 spring receiver, 18 sliding member, 19 sliding member, 20 pivot pin, 21 lever mechanism, 22 first end, 23 second end, 24 third end.

Claims (4)

A shoe body attached to an elevator door and inserted into a sill groove;
A first and a second, which are provided between the shoe body and the side wall of the sill groove on both side surfaces of the shoe body, and which are pivotally attached to the shoe body so as to be at least partially separated from the shoe body. A guide plate,
It is pivotally attached to the shoe main body and provided between the first and second guide plates, and the displacement of one of the first and second guide plates with respect to the shoe main body is enlarged by a lever action at a predetermined magnification. A lever mechanism for converting into the other displacement of the first and second guide plates,
When one of the first and second guide plates is pressed against the side wall of the sill groove and comes close to the shoe body, the other of the first and second guide plates is moved by the lever mechanism . An elevator door leg characterized in that it is separated from the shoe body at a predetermined magnification and is pressed against the side wall of the sill groove.   The first and second guide plates are pivotally supported at a pivot point that is spring-biased in a direction approaching the sill groove facing the upper end, and held at a predetermined position, and the sill facing the lower end The elevator door leg according to claim 1, wherein the leg of the elevator door is held at a predetermined position by being biased in a direction approaching the groove. The lever mechanism includes a first end pivotally attached to the shoe body at a position close to the pivot point, a second end abutting closer to the upper end than the lower end of the first guide plate, 3. The elevator door leg according to claim 2, further comprising a third end abutting at a position closer to the lower end than the upper end of the second guide plate.   4. The elevator door leg according to claim 1, wherein a pair of the lever mechanisms are provided in a bilaterally symmetrical relationship between the first and second guide plates. 5.

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