JP6229944B2 - Elevator door opening and closing device - Google Patents

Description

  The present invention relates to an elevator door opening and closing device having a smoke shielding function.

  A general elevator includes a car guide rail for guiding a car and a car, a counterweight, a guide rail for a counterweight, a rope connecting the car and the counterweight, and hoisting in the hoistway. Equipped with a machine.

  The elevator drives the rope by the hoisting machine, thereby moving the car up and down along the guide rail for the car and moving the balance weight up and down along the guide rail for the counterweight.

  The car can move up and down the hoistway and can stop at a landing provided on each floor of the building. The car includes a car-side door opening / closing device. A landing-side door opening / closing device is provided at the landing so as to correspond to the car-side door opening / closing device.

  The landing-side door opening / closing device includes an entrance / exit frame provided at the entrance / exit leading from the landing to the hoistway, a door configured to be openable / closable, and a sill that is disposed below the door and guides the door in the opening / closing direction. Is known (see Patent Document 1).

  In this door opening and closing device, a groove for guiding the door is formed in an upper opening on the upper surface of the sill. A guide shoe (guide portion) that fits in the groove is provided at the lower portion of the door. Thereby, the door is comprised so that a reciprocation is possible along a groove part.

  A smoke shielding member is provided at the lower part of the door to prevent smoke from entering the hall. The landing-side door opening / closing device can reliably perform smoke shielding at the lower part by fitting the guide shoe and the smoke shielding member into the groove portion of the sill.

  In the case of the conventional door opening and closing device as described above, since the groove is formed on the upper surface of the sill, foreign matter such as dust enters the groove and prevents the door from being opened and closed. Smoke function may be reduced.

  In order to solve this problem, for example, a door opening / closing device is known in which a groove is formed on the lower surface side of the sill and a guide shoe is inserted into the groove (see Patent Document 2). By doing in this way, the upper surface of a sill does not need to form a groove part but is comprised in flat shape. Such a threshold is generally called a flat sill.

JP 2012-91895 A JP 2013-151371 A

  Even when a flat sill is used for the landing-side door opening and closing device, it is necessary to take appropriate smoke shielding measures. In the conventional door opening / closing device, there has been no door opening / closing device provided with an appropriate smoke blocking function.

  Therefore, an object of the present invention is to provide an elevator door opening and closing device that can reliably perform smoke shielding when a flat sill, that is, a sill having a groove opening downward is employed.

The elevator door opening and closing device according to the present invention includes a door and a threshold for guiding the door in the opening and closing direction. The threshold includes a groove for guiding the door. The groove is configured to open downward. The door includes a guide portion that engages with the groove portion and guides the door, and a support portion that supports the guide portion. Elevator door openers is brought into contact with the side portions of the sill, further comprising a Saegikemuri member prevents the smoke to pass through the threshold. Saegikemuri member while being positioned spaced apart sill side portion or al, deformable configured to allow contact with the side portion of the sill.

According to such a configuration, by Saegikemuri member contacts the side portions of the sill, smoke during a fire will be able to prevent from passing through the threshold. That is, Saegikemuri member is deformed in response to pressure changes in the peripheral space formed at the time of fire, is configured so as to contact the side portion of the sill. Further, when the guide portion engages with the groove portion, smoke shielding can be performed at the engaging portion.

The elevator door opening and closing device according to the present invention is disposed below the sill and further includes a protection member for protecting a user's toe. It is desirable that the smoke shielding member is configured to be deformable so as to contact the protection member.
According to such a configuration, when a gap through which smoke passes is formed between the sill and the protection member, the smoke shielding member contacts not only the sill but also the protection member, so that the smoke It will be possible to prevent passage through the gap.

  According to the present invention, it is desirable that the smoke shielding member is formed of an elastic body and contacts the side portion of the sill by elastic deformation.

  The elevator door opening and closing device according to the present invention includes a door and a threshold for guiding the door in the opening and closing direction. The elevator door opening and closing device is disposed below the sill so as to form a gap with the sill, and further includes a protection member for protecting the user's toes. The sill includes a groove for guiding the door, and the groove is configured to open downward. The door includes a guide portion that engages with the groove portion and guides the door, and a support portion that supports the guide portion. The door opening and closing device of the elevator further includes a smoke shielding member that prevents smoke from passing through the sill by contacting the side or lower part of the sill. A smoke-shielding member is provided with the contact part extended and spaced apart from both between a sill and a protection member. A contact part is comprised so that the state which contacted the threshold and the state which contacted the protection member can be taken.
  It is desirable that the smoke shielding member is made of an elastic body and contacts the sill or the protection member by elastic deformation.

  According to the present invention, when a flat sill, that is, a sill having a groove opening downward is employed, smoke shielding can be reliably performed.

FIG. 1 is a perspective view showing the overall configuration of the elevator. FIG. 2 is a side view showing a landing-side door opening / closing device and a car-side door opening / closing device in an elevator. FIG. 3 is a front view of the door in the landing-side door opening / closing device. FIG. 4 is an enlarged front view showing a lower portion of the door. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. FIG. 7 is an enlarged cross-sectional view showing a part of the smoke shielding member.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. 1 to 7. FIG. 1 is a perspective view showing the overall configuration of the elevator. FIG. 1 illustrates a so-called machine roomless type elevator that does not have a machine room.

  As shown in FIG. 1, the elevator has a car 2, a first guide rail 3 for guiding the car 2, a counterweight 4, and a second guide rail for guiding the counterweight 4 in the hoistway 1. 5, a rope 6 that connects the car 2 and the counterweight 4, and a hoisting machine 7.

  Furthermore, a return wheel 8 for winding the rope 6 is disposed on the upper part of the hoistway 1. In the lower part of the hoistway 1, a control panel 9 for controlling the hoisting machine 7, a speed governor 10 for regulating the speed of the elevator, and a shock absorber 11 are further provided.

  The elevator moves the car 2 up and down along the first guide rail 3 by driving the hoisting machine 7 via the control panel 9. The hoisting machine 7 includes a traction sheave 12, and can drive the car 2 up and down by driving the rope 6 through the traction sheave 12.

  Since the counterweight 4 is connected to the car 2 via the rope 6, the counterweight 4 moves up and down along the second guide rail 5 in accordance with the vertical movement of the car 2, contrary to the movement of the car 2. By connecting the counterweight 4 to the car 2, the hoisting machine 7 can move the car 2 up and down with small power. The governor 10 can stop the car 2 when the speed of the vertical movement of the car 2 exceeds a specified value. When the shock absorber 11 comes into contact with the car 2, the shock can be reduced.

  The car 2 can move up and down the hoistway 1 and can stop at a landing 13 provided on each floor of the building. As shown in FIG. 2, the car 2 includes a car-side door opening / closing device 14. A landing-side door opening / closing device 15 is provided at the landing 13 so as to correspond to the car-side door opening / closing device 14. FIG. 2 shows a so-called center open type as an example of these door opening and closing devices 14 and 15.

  As shown in FIG. 2, the car-side door opening / closing device 14 includes a plurality of (for example, two) doors 14A and a sill 14B. The door 14 </ b> A is supported by an upper frame 16 provided integrally with the upper portion of the car 2. The upper frame 16 is provided with a door rail 17 for guiding the door 14A. A door hanger 18 supported by the door rail 17 is provided on the upper portion of the door 14A. The door hanger 18 is provided with a plurality of rollers 19 that engage with the door rail 17. The door 14 </ b> A is configured to move in the opening / closing direction via a drive mechanism (not shown) in a state where the roller 19 of the door hanger 18 is engaged with the door rail 17.

  The threshold 14 </ b> B is supported by the lower frame 20 provided at the lower part of the car 2. This threshold 14B has a groove 21 for guiding the door 14A. The groove portion 21 is formed on the upper surface of the sill 14A and is configured in an upper opening shape. A guide portion (guide shoe) 22 provided in the lower portion of the door 14A is fitted in the groove portion 21. The groove portion 21 of the threshold 14B guides the guide portion 22 along the opening / closing direction of the door 14A as the door 14A moves.

  As shown in FIGS. 2 to 4, the landing-side door opening / closing device 15 includes a plurality of (for example, two) doors 15A and a sill 15B. The door 15 </ b> A is supported by a frame body 26 provided at the hall 13. The frame body 26 is provided with a frame 27 for supporting the upper portion of the door 15A. The frame 27 is provided with a door rail 28 for guiding the door 15A. A door hanger 29 is provided on the upper portion of the door 15A. The door hanger 29 is provided with a plurality of rollers 30 that engage with the door rail 28. The door 15 </ b> A moves in the opening / closing direction by engaging with the drive mechanism (not shown) for driving the car-side door opening / closing device 14 with the roller 30 of the door hanger 29 engaged with the door rail 28. Is configured to do.

  The threshold 15B is supported by a support frame 31 provided on the wall surface of the hoistway 1. In addition to the sill 15B, the support frame 31 supports a protection member 32 for preventing the toe of the elevator user from being caught between the lower portions of the sill 15B. As shown in FIG. 5, the threshold 15 </ b> B and the protection member 32 are fixed to the support frame 31 by fastening means including a bolt 33 and a nut 34.

  As shown in FIGS. 3 to 5, a groove portion 35 for guiding the door 15A is formed in the lower portion 15a of the sill 15B. The groove part 35 is comprised linearly along the longitudinal direction of the sill 15B. The sill 15B is a flat sill type configured such that the groove 35 opens downward. The side surface (side surface) 15b of the sill 15B is formed with an inclined surface that is inclined at a predetermined angle with respect to the vertical direction.

  As shown in FIGS. 5 and 6, the door 15 </ b> A engages with the groove portion 35 and guides the door 15 </ b> A, and a support portion (bracket) 37 that supports the guide portion 36. And a smoke shielding member 38 for preventing smoke from passing through the sill 15B when a fire occurs, and a support member 39 for supporting the smoke shielding member 38. As shown in FIG. 4, the guide part 36 and the support part 37 are the lower part of the door 15A, and are arrange | positioned at the both ends (two places) in the width direction of the door 15A. Further, the smoke shielding member 38 and the support member 39 are provided between the guide portion 36 and the support portion 37 that are disposed at both ends in the width direction of the door 15A.

  The guide portion 36 is an elastic body formed of a synthetic resin material such as rubber. The guide part 36 is configured as a long plate member.

  The support part 37 is made of metal and is configured in a long plate shape. The support portion 37 is formed into a predetermined shape by, for example, press molding. As shown in FIG. 5, one end portion of the support portion 37 is fixed to the lower side surface of the door 15 </ b> A via the attachment member 40. A guide portion 36 is formed integrally with the other end portion of the support portion 37. Moreover, the length L1 in the vertical direction of the support portion 37 is longer than the gap C between the door 15A and the sill 15B.

  The smoke shielding member 38 is an elastic body formed of a synthetic resin material such as rubber. The smoke shielding member 38 includes a contact portion 41 that contacts the side portion 15b of the sill 15B, and an attachment portion 42 that is attached to the support member 39.

  The contact portion 41 is configured in a plate shape, and is configured in a linear shape in a cross-sectional view. The contact portion 41 is configured to be inclined at a predetermined angle with respect to the attachment portion 42. As shown in FIG. 6, the contact portion 41 is disposed in the gap between the threshold 15 </ b> B and the protection member 32. More specifically, the contact portion 41 is disposed away from the inclined surface formed on the side portion 15b of the sill 15B during normal times (when no fire has occurred). Moreover, the contact part 41 is also separated from the lower part 15a of the threshold 15B. Furthermore, the contact portion 41 is disposed away from the protection member 32 in a normal time. The contact portion 41 of the sill 15B is configured to come into contact with the side portion 15b of the sill 15B or the protection member 32 by elastic deformation in the event of a fire.

  As shown in FIG. 6, the attachment portion 42 is configured in a plate shape and is configured in a linear shape in a cross-sectional view. The attachment portion 42 is fixed to the door 15A via the support member 39 so as to be parallel to the vertical direction. The vertical length L2 of the attachment portion 42 is longer than the gap C between the door 15A and the sill 15B.

  The support member 39 is made of metal and has a long plate shape or a quadrangular prism shape. The attachment portion 42 of the smoke shielding member 38 is fixed to a part of the surface of the support member 39. The support member 39 supports the smoke shielding member 38 by fixing another part of the surface to the lower side surface of the door 15B.

  As shown in FIGS. 2, 5, and 6, the protection member 32 is supported by the support frame 31 via a support bracket 44. The protection member 32 is fixed to the support bracket 44 by a screw member 45. The protection member 32 includes a protection part 46 for protecting the user's toes and a fixing part 47 fixed to the support bracket 44.

  The protection part 46 is configured as a protruding part protruding upward. The protection part 46 has a facing surface 46a that faces the threshold 15B. The facing surface 46a faces an inclined surface formed on the side portion 15b of the sill 15B. As shown in FIGS. 5 and 6, the facing surface 46 a of the protection unit 46 is an inclined surface that is inclined at a predetermined angle with respect to the vertical direction. The inclination angle of the facing surface 46a is substantially equal to the inclination angle of the inclined surface at the side portion 15b of the sill 15B. Therefore, the opposing surface 46a is substantially parallel to the inclined surface in the side portion 15b of the sill 15B.

  Since the facing surface 46a is located away from the sill 15B, a gap is formed between the facing surface 46a and the inclined surface of the sill 15B. The contact portion 41 of the smoke shielding member 38 inserted in the gap is substantially parallel to the opposing surface 46a of the protection member 32 and the inclined surface of the side portion 15b of the sill 15B. That is, the inclination angle of the contact portion 41 with respect to the vertical direction is substantially equal to the inclination angle of the inclined surfaces of the facing surface 46a and the side portion 15b.

  The fixing portion 47 is configured in a plate shape and has an insertion hole 48 through which the screw member 45 can be inserted. As shown in FIGS. 5 and 6, the insertion hole 48 is a long hole that is long in the vertical direction. Thereby, the protection member 32 can adjust the position in the vertical direction within the range of the length of the insertion hole 48. A screw hole 44 a into which the screw member 45 is screwed is formed in the support bracket 44.

  Hereinafter, the operation of the smoke shielding member 38 in the landing-side door opening / closing device 15 will be described with reference to FIGS. 6 and 7. In a normal time when no fire is generated, the smoke shielding member 38 is separated from the threshold 15B and the protection member 32 without elastic deformation. For example, when a fire occurs at the landing 13 where the landing-side door opening / closing device 15B is installed, the atmospheric pressure (pressure) at the landing 13 increases. If it does so, the pressure by the raise of this atmospheric pressure will act on the smoke-shielding member 38, and the contact part 41 of the smoke-shielding member 38 will elastically deform. Due to this elastic deformation, the contact portion 41 contacts the facing surface 46 a of the protection portion 46 in the protection member 32. This contact blocks (blocks) the flow of smoke from the landing 13 into the hoistway 1.

  Moreover, when a fire occurs in a place different from the landing 13 where the landing-side door opening / closing device 15 is installed, the air pressure in the hoistway 1 may increase. In such a case, the pressure due to the increase in the atmospheric pressure acts on the smoke shielding member 38, and the contact portion 41 of the smoke shielding member 38 is elastically deformed. By this elastic deformation, the contact portion 41 comes into contact with the inclined surface of the side portion 15b of the sill 15B. By this contact, the flow of smoke from the hoistway 1 to the landing 13 is blocked (blocked).

  When the fire is extinguished, the increase in the atmospheric pressure as described above is eliminated, and the pressure acting on the contact portion 41 is also eliminated. Thereby, the contact part 41 is restored to its original shape, and the smoke shielding by the smoke shielding member 38 is released.

  According to the elevator door-side door opening / closing device 15 described above, the smoke shielding member 38 is elastically deformed in response to a change in pressure in the surrounding space that occurs when a fire occurs, and the contact portion 41 is the side portion 15b of the sill 15B or a protective member. 32 protective parts 46 are contacted. This makes it possible to prevent smoke from passing through the threshold 15B when a fire occurs. Moreover, since the guide part 36 is always engaged (inserted) in the groove part 35 of the sill 15B, smoke shielding at this part can be reliably performed.

  Furthermore, since the smoke shielding member 38 is not in contact with the sill 15B or the protection member 32 in a normal time when no fire has occurred, the smoke shielding member 38 is not worn even when the door 15A performs the opening / closing operation. Thereby, the lifetime of the smoke shielding member 38 can be prolonged.

  Moreover, the contact part 41 of the smoke-shielding member 38 can perform reliable smoke shielding by closely_contact | adhering to the side part 15b of the threshold 15B by elastic deformation. Moreover, since the smoke shielding member 38 is an elastic body, it can be automatically restored to its original shape when the pressure acting on the contact portion 41 is released.

  The elevator door opening and closing device according to the present invention is not limited to the configuration of the above embodiment. Further, the elevator door opening and closing apparatus according to the present invention is not limited to the above-described effects. The elevator door opening and closing apparatus according to the present invention can be variously modified without departing from the gist of the present invention.

  In the above embodiment, the example in which the present invention is applied to the landing side door opening / closing device 15 has been described. However, the present invention can also be applied to the car side door opening / closing device 14.

  In the above embodiment, the center open type door opening and closing devices 14 and 15 are exemplified, but the present invention is not limited to this and can be applied to a side open type door opening and closing device.

  In said embodiment, although the contact part 41 of the smoke-prevention member 38 illustrated the door opening / closing apparatus (the landing side door opening / closing apparatus 15) comprised so that the side part 15b of the threshold 15B could be contacted, it is not limited to this. The contact part 41 may contact the lower part 15a of the sill 15B, or may contact both the lower part 15a and the side part 15b of the sill 15B.

  In the above embodiment, the contact portion 41 and the attachment portion 42 of the smoke shielding member 38 are both formed of synthetic resin, but the present invention is not limited to this. For example, it is possible to form the attachment portion 42 with a metal and the contact portion 41 with a synthetic resin.

  DESCRIPTION OF SYMBOLS 1 ... Hoistway, 2 ... Car, 3 ... 1st guide rail, 4 ... Counterweight, 5 ... 2nd guide rail, 6 ... Rope, 7 ... Hoisting machine, 8 ... Return wheel, 9 ... Control board, 10 ... Speed governor, 11 ... shock absorber, 12 ... traction sheave, 13 ... landing, 14 ... car side door opening / closing device, 14A ... door, 14B ... sill, 15 ... landing side door opening / closing device, 15A ... door, 15B ... sill, 15a: Lower part of sill 15B, 15b: Side part of sill 15B, 16 ... Upper frame, 17 ... Door rail, 18 ... Door hanger, 19 ... Roller, 20 ... Lower frame, 21 ... Groove part, 22 ... Guide part, 26 ... Frame 27 ... Frame, 28 ... Door rail, 29 ... Door hanger, 30 ... Roller, 31 ... Support frame, 32 ... Protection member, 33 ... Bolt, 34 ... Nut, 35 ... Groove, 36 ... Guide part, 37 ... Support part, 38 ... Smoke shield DESCRIPTION OF SYMBOLS 39 ... Support member, 40 ... Attachment member, 41 ... Contact part, 42 ... Attachment part, 44 ... Support bracket, 44a ... Screw hole, 45 ... Screw member, 46 ... Protection part, 46a ... Opposite surface, 47 ... Fixing part, 48 ... Insertion hole

Claims (5)

In an elevator door opening and closing device comprising a door and a threshold for guiding the door in the opening and closing direction,
The sill includes a groove for guiding the door, and the groove is configured to open downward,
The door includes a guide portion for engaging the groove portion and guiding the door, and a support portion for supporting the guide portion,
By contacting the side portions of the sill, further comprising a Saegikemuri member prevents the smoke passes through the threshold,
The Saegikemuri member while being disposed spaced apart side portions or al of the sill, the sill deformable configured to allow contact with the side portion of the elevator door opening and closing device. It is arranged below the sill and further comprises a protective member for protecting the user's toes,
The elevator door opening and closing device according to claim 1, wherein the smoke shielding member is configured to be deformable so as to be in contact with the protection member. The Saegikemuri member together is constituted by an elastic member, contacts the side portion of the sill by an elastic deformation, elevator door opening and closing device according to claim 1 or 2.   In an elevator door opening and closing device comprising a door and a threshold for guiding the door in the opening and closing direction,
  It is disposed below the sill so as to form a gap with the sill, and further includes a protective member for protecting the user's toes,
  The sill includes a groove for guiding the door, and the groove is configured to open downward,
  The door includes a guide portion for engaging the groove portion and guiding the door, and a support portion for supporting the guide portion,
  A smoke shielding member that prevents smoke from passing through the sill by contacting a side or a lower part of the sill;
  The smoke-shielding member includes a contact portion extending away from both between the sill and the protection member,
  The door opening and closing device for an elevator, wherein the contact portion is configured to be able to take a state in contact with the sill and a state in contact with the protection member.   The elevator door opening and closing device according to claim 4, wherein the smoke shielding member is configured by an elastic body and contacts the sill or the protection member by elastic deformation.

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