JP5743656B2 - Elevator hold door - Google Patents

Description

  The present invention relates to an elevator door of an elevator hall, and more particularly to an elevator door that prevents deformation of the elevator door due to heat when a fire or the like occurs in a building and prevents the elevator door from protruding into a hoistway.

  The structure of a conventional elevator door (hereinafter referred to as “hold door”) of an elevator hall is composed of a front member facing the elevator hall and a reinforcing member that reinforces the front member. A holder 100 of this type of structure is shown in FIG. FIG. 7 is a cross-sectional view of the hold door 100. The hold door 100 includes a front member 101 having a flat surface facing the elevator hall, and a reinforcing member 102 for reinforcing the flat surface. Bonded to the back side.

  In the case of such a hold door 100, when a building fire occurs, the hold door 100 is deformed by heat and protrudes into the elevator hoistway, which may interfere with traveling when the elevator is used for rescue or evacuation. There is.

  In order to solve this problem, a hold door has been proposed in which a front side member and a back side member are fastened with two kinds of rivets made of aluminum and steel (for example, see Patent Document 1). According to this proposal, when the heat deformation of the hold door starts, the aluminum rivet shears and breaks, and the fastening force is weakened, so that the deformation of the hold door main body can be suppressed.

  However, the proposed holder has a large number of rivets fastened, and uses two types of rivets. Therefore, a mounting error during manufacture is a concern.

JP 2002-37575 A

  The present invention has been made in view of the above problems, and an object thereof is to provide an elevator door that can be easily manufactured and can suppress deformation due to thermal deformation.

  The elevator holder according to the present embodiment includes a front side member facing the elevator hall, a reinforcing member attached to the back surface of the front side member, and a back side member facing the hoistway attached to the back surface of the front side member. The back side member is formed of a member having a smaller coefficient of thermal expansion than the front side member.

  Moreover, the elevator holder concerning this embodiment faces the hoistway attached facing the back side of the front side member which faces an elevator landing, the back surface of this front side member, and the said back side member. It has the back side member which consists of heat insulating materials, and the bracket for attaching the said back side member to the said front side member, It is characterized by the above-mentioned.

  According to the present invention, it is possible to provide an elevator hold door that is easy to manufacture and can suppress deformation due to thermal deformation.

FIG. 1A is a front view as seen from the hall of the holder according to the embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along the alternate long and short dash line AA ′ in FIG. . It is a cross-sectional view of a hold door showing the first embodiment according to the present invention. It is a cross-sectional view after the thermal deformation of the holder showing the first embodiment according to the present invention. It is a cross-sectional view of a hold door showing a second embodiment according to the present invention. It is a cross-sectional view of a hold door showing a third embodiment according to the present invention. It is a cross-sectional view of a hold door showing a fourth embodiment according to the present invention. It is a cross-sectional view showing a conventional hold door.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 6.

  FIG. 1 is a diagram showing a schematic configuration showing a hold-a device of this embodiment. FIG. 1A shows a front view of the hold door device of the present embodiment as seen from the landing, and FIG. 1B shows a cross-sectional view taken along the alternate long and short dash line AA ′ in FIG. ing.

  As shown in FIGS. 1A and 1B, the holder 1 (1 a, 1 b) is surrounded by the three-way frame 2 and the getting-on / off floor 3, and the three-way frame 2 is fixed to the wall 4. A sill 6 having a guide groove 5 is fixed to the boarding / exiting floor 3. A hanger 8 to which a hanger roller 7 is attached is provided at the upper end portion of the hold door 1. On the other hand, a guide shoe 9 for sliding the holder 1 along the guide groove 5 is attached to the lower end of the holder 1. A hanger rail 11 is attached to the header case 10 fixed to the upper side of the entrance / exit of the wall 4 so that the hanger roller 7 can be rolled. The holder 1 opens and closes while the hanger roller 7 rolls on the hanger rail 11. In FIG. 1B, the left side of the hold door 1 is a hoistway and the right side is a landing.

  Next, the structure of the hold door 1 of the present embodiment will be described in detail with reference to FIGS. 2 to 6 are cross-sectional views taken along one-dot chain line B-B 'in FIG. Moreover, in description after 2nd embodiment, about the part which is common in 1st embodiment, the same code | symbol is attached | subjected and description is omitted.

  FIG. 2 is a cross-sectional view of the holder according to the first embodiment of the present invention, and FIG. 3 shows a cross-sectional view of the holder according to the first embodiment after thermal deformation. As shown in FIG. 2, the holder according to the first embodiment includes a front side member 12 constituting a decorative surface facing the elevator hall, a back side member 13 facing the hoistway, and a reinforcing member that reinforces the front side member 12. 14.

  The front side member 12 has a U-shaped cross section, and has a flat front side member horizontal part 121 facing the landing and a front side member protrusion part 122 protruding to the hoistway side at the end of the front side member horizontal part 121. Yes. Similarly to the surface member 12, the back side member 13 has a flat back side member horizontal part 131 facing the hoistway and a back side member protruding part 132 protruding to the landing side. The front door member protrusion 122 and the back member protrusion 132 are joined to form the hold door 1. The reinforcing member 14 has a U-shaped cross section composed of a reinforcing member horizontal portion 141 and a reinforcing member protruding portion 142, and is attached to the back side of the front member horizontal portion 121.

  The front side member 12 and the reinforcing member 14 are made of metal (iron), and a member having a smaller thermal expansion coefficient than the front side member 12 is used for the back side member 13. The member used for the back side member 13 is not particularly limited as long as the coefficient of thermal expansion is smaller than that of the front side member 12, and examples thereof include iron-nickel alloy (invar), tungsten, and ceramics.

  For example, when the hold door 1 configured as described above is subjected to heat deformation when placed under a high temperature condition such as when a fire occurs, there is a difference in thermal expansion coefficient between the front side member 12 and the back side member 13, Deformation differs between the front side member 12 and the back side member 13 of the hold door 1. Since the front side member 12 and the back side member 13 are joined by the front side member protrusion 122 and the back side member protrusion 132, the deformation of the front side member 12 due to heat is smaller than that of the front side member 12, that is, the deformation due to heat is small. The back side member 13 suppresses deformation of the entire hold door 1. In this way, by suppressing the deformation of the entire holder 1, it is possible to prevent the holder 1 from protruding into or dropping out from the hoistway.

  FIG. 4 shows a cross-sectional view of the holder according to the second embodiment of the present invention. The holder according to the second embodiment includes a front side member 12, a backside member as a heat insulating material 15, a reinforcing member 14, and a bracket 16, and the heat insulating material 15 is attached to the front side member 12 via a blanket 16. Yes. The blanket 16 has a substantially L-shaped cross section, and one piece thereof is joined to the front side member protruding portion 122 of the front side member 12 and the other piece is joined to the heat insulating material 15. In the hold door according to the second embodiment, by using the heat insulating material 15 for the back side member, the heat from the front side member 12 can be cut off, and deformation due to the heat of the back side member can be suppressed. Examples of the material used for such a heat insulating material 15 include phenol resin, glass epoxy, cork and the like.

  FIG. 5 shows a cross-sectional view of the holder according to the third embodiment of the present invention. The holder of the third embodiment has a configuration in which the reinforcing member 14 is provided also to the back side member 13 of the first embodiment. By providing the reinforcing member 14 on the back surface of the back side member 13, the rigidity of the back side member 13 is increased. Thereby, it becomes possible to further suppress the deformation of the back side member 13 due to heat as compared with the hold door of the first embodiment.

  FIG. 6 is a cross-sectional view of the holder according to the fourth embodiment of the present invention. The holder of the fourth embodiment has a configuration in which the front side member 12 and the back side member 13 are joined via an elastic body 17. The front side member 12 and the back side member 13 are joined via an elastic body 17 such as a spring between the front side member protruding portion 122 and the back side member protruding portion 132 of the back side member 13, and distortion due to deformation of the front side member 1 is caused. By being relaxed by the elastic body 17, the back side member 13 can be made difficult to be deformed. Further, as a holder of the fifth embodiment, heat transfer to the back side member 13 of the front side member 12 can be reduced by replacing the elastic body 17 with a heat insulating material.

  As described above, according to the holder of the present embodiment, since the number of members constituting the holder is small, manufacture is easy, and members having different thermal expansion coefficients are used for the landing side member and the side hoistway side member. By using this, it is possible to suppress thermal deformation and to prevent the holder from protruding or dropping out to the hoistway side.

1a, 1b ... Holder 2 ... Three-way frame 3 ... Getting on / off floor 4 ... Wall 5 ... Guide groove 6 ... Sill 7 ... Hanger roller 8 ... Hanger 9 ... Guide shoe 10 ... Header case 11 ... Hanger rail 12 ... Front side member 13 ... Back side Member 14 ... Reinforcing member 15 ... Bracket 16 ... Elastic body

Claims (4)

A front member facing the elevator hall,
A reinforcing member attached to the back surface of the front member;
A backside member facing the hoistway, attached opposite the backside of the frontside member ;
A bracket for attaching the back side member to the front side member ;
The elevator hold door, wherein the back side member is constituted by a member made of a heat insulating material smaller than the thermal expansion coefficient of the front side member .   The elevator hold door according to claim 1, wherein a reinforcing member is provided on a back surface of the back side member.   The elevator hold door according to claim 1, wherein the front side member and the back side member are joined via an elastic body.   The elevator hold door according to claim 1, wherein the front side member and the back side member are joined via a heat insulating material.

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