JPH11343083A - Car for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the motive power by forming a sandwich panel or a hollow section panel as a structural member of a cage. SOLUTION: A cage 1 of an elevator is formed by five faces, that is, a floor plate 3, a ceiling plate 4, the side plates 5 and a back plate 6, and an openable and closable car door 7 is installed at a front side. The floor plate 3, the ceiling plate 4 and the side plates 5 are formed by a sandwich panel comprising a core material and a skin material made of a plastic sheet, or a hollow section panel using the plastic sheet as the skin material and the stringer, and a part corresponding to a car frame 2 is provided with a reinforcement spur made of these panels to improve the total rigidity and strength of the cage. Accordingly high rigidity and strength can be obtained even when a thickness of the panel is thin, and the weight can be considerably reduced by the effect of the low specific gravity of the material. Whereby the motive power can be reduced, and the car can be easily applied to a home elevator operated by a domestic power source.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator, and particularly to a car suitable for a home elevator.

[0002]

2. Description of the Related Art An elevator car is constructed by attaching a car door to a box-shaped cab comprising a floor panel, a ceiling panel, a side panel and a back panel. Further, the car room is provided with a car frame on which a guide roll or the like which is in contact with a guard rail for guiding the ascending and descending of the car is mounted while supporting and reinforcing the car.

[0003] In conventional cars, most of the cabs and car frames are made of a metal plate such as an aluminum alloy plate or a steel plate. However, such a car is not only heavy but requires a large amount of power. Because of its large inertia, advanced control is required for driving. In particular, recently, in a home elevator that is rapidly spreading in elderly housing and the like, since a home power supply is used, reduction in power by weight reduction is strongly demanded.

In response to such a demand, Japanese Patent Application Laid-Open No. 64-1
No. 7790 proposes that the cab be constructed of a single plate with FRP reinforcing ribs. This conventional cab is F
Because it is composed of RP, it is lighter than one made of metal plate, but it has a reinforcing rib, but in order to use the veneer, to achieve the required rigidity and strength, It is unavoidable to increase the thickness and the size of the reinforcing ribs, and the increase in the thickness of the plate pressure and the size of the reinforcing ribs increases the weight. Therefore, it cannot be said that sufficient weight reduction is achieved.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and, not only to have excellent rigidity and strength, but also to be lighter and capable of reducing power. An object of the present invention is to provide an elevator car suitable for a home elevator.

[0006]

In order to achieve the above object, the present invention provides a sandwich panel using a plastic sheet as a skin material or a hollow section panel using a plastic sheet as a skin material and a stringer for a cab. An elevator car provided as a structural member is provided. Preferably, the floor panel, ceiling panel, side panel and back panel of the cab are constituted by a sandwich panel using a plastic sheet as a skin material or a hollow section panel using a plastic sheet as a skin material and a stringer. Another object of the present invention is to provide an elevator car characterized in that at least one surface includes a panel having a plastic sheet as a skin material as a structural member of a car room.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the drawings. In FIG. 1, an elevator cab supports a cab 1 in which people and luggage can be loaded, and the cab 1,
The car frame 2 is provided with a guide roll (not shown) for rolling and contacting a guide rail (not shown) for guiding the elevator of the car while reinforcing the car. The cab 1 has a floorboard 3
, A ceiling plate 4, a side plate 5, and a back plate 6, and a car door 7 is attached to the front surface so as to be freely opened and closed. As another form, a back door may be eliminated and doorways may be installed in two directions and a car door may be attached.

Each of the floor panel 3, the ceiling panel 4, and the side panel 5 is constituted by a sandwich panel composed of a core member 8 and a skin member 9 made of a plastic sheet as shown in FIG. A portion corresponding to the car frame 2 shown in FIG. 1 is provided with a reinforcing spar 10 made of a sandwich panel, thereby improving the rigidity and strength of the entire car room. That is, the car frame is integrally formed as a part of the sandwich panel. On the other hand, in the case of a cab with a backboard,
The back plate 6 is formed as a flat sandwich panel composed of a core material 8 and a skin material 9 made of a plastic sheet as shown in FIG. However, all of the floor panel 3, the ceiling panel 4, the side panel 5, and the back panel 6 can be constituted by a sandwich panel as shown in FIG. In this case, a car frame made of FRP or metal is separately attached as necessary. In that case, although not particularly limited, it is preferable that the car frame and the cab are fixed at respective ends of the ceiling plate and the floor plate. At this time, the car frame and the side plate do not need to be particularly fixed.

Further, the cab may need to have rigidity against torsion depending on a method of supporting the cab and how a load is applied. In such a case, a rib sandwich structure having irregularities on one side of the sandwich panel as shown in FIG. 7 is preferable in terms of securing torsional rigidity.

[0010] In order to ensure the assemblability of each panel, a joint portion for joining the panels to each other may be provided at the end of each panel as necessary. Further, in consideration of getting in and out of a wheelchair, it is preferable to provide a concave portion serving as a cling on the surface of the skin material on the indoor side because operability and safety can be improved.

In addition, a skin material is cut out for mounting a lighting or an operation panel on an inner surface of the car, a fixing member or a part is mounted on an outer surface, an inner core material is hollowed out, or It could even penetrate the wall. In the present invention, “at least one side”, “sandwich panel”, or “hollow section panel” is a concept including such an aspect.

The plastic sheet is composed of a thermoplastic resin sheet. As the type of the resin, a nylon resin, a polypropylene resin, an ABS resin, an AS resin, a polycarbonate resin, a PPS resin, a PBT resin, an acrylic resin, a polyethylene resin, a vinyl chloride resin, and a polystyrene resin can be used. The two skin materials of the sandwich portion can be formed into a required shape by press molding, vacuum molding, air pressure molding, and injection molding of these sheet materials. The thickness of the sheet material at this time is 2 to
8 mm is preferable from the viewpoint of molding and securing rigidity and strength. Further, it is preferable that these sheet materials do not substantially contain reinforcing fibers, but may contain so long as the object of the present invention is not impaired, for example, 10% by weight or less per sheet material.

In the above, the core material of the sandwich panel is made of polyvinyl chloride resin, polyurethane resin, polystyrene resin, polyethylene resin, polypropylene resin,
It is made of a foam (foam) such as an acrylic resin, a phenol resin, a polymethacrylimide resin, and an epoxy resin. Above all, a rigid foam such as an acrylic resin or a polymethacrylimide resin, which has a large effect of improving rigidity and strength, is preferable. As the core material, an inorganic foam such as an aluminum foam or a syntactic foam can be used. Further, an aluminum honeycomb, a paper honeycomb, or a honeycomb formed by impregnating a honeycomb of polyaramid fiber paper with a phenol resin can be used. The core material has a density of 0.02 to 0.2 g / cm ^{3 in} order to further reduce the weight and strength of the sandwich panel.
Are preferred. When it is less than 0.02 g / cm ³ , the sandwich panel tends to buckle, and when it is more than 0.2 g / cm ³ , the weight reduction effect is reduced. In this case, the thickness of the core material is preferably about 5 to 50 mm from the viewpoint of increasing strength and rigidity.

A reinforcing spar is provided between the two plastic sheets obtained as described above, if necessary, and a resin serving as a core material is filled between the spar and foamed, or the core material is foamed. By adhering each skin material on both sides, it can be formed as a sandwich panel. In this case, if the sheet material is smooth, the adhesive strength may be reduced. In this case, it is preferable to provide irregularities on the surface. 8, 9, and 10 show examples of these. However, the size and pitch of the unevenness are not particularly limited.
It is preferably from 10 to 10 mm and a width of from 1 to 100 mm. Pitch is 5
0 to 200 mm is preferred. The shape may be an R groove or a rectangular shape. In particular, when the convex portion is formed on the outside, the size is preferably small because it is restricted by the outer diameter. In addition, it is preferable that the direction of the uneven portion extends in the longitudinal direction of the panel portion in order to increase bending rigidity. Further, when the injection foaming method of the foaming material stock solution is used as the sandwiching method, a shape having a low flow resistance during the flow of the foaming material is preferable, but the sheet material on the indoor side is required to have a high-quality design property, In some cases, unevenness may be provided in the direction. In this case, the height of the unevenness is reduced (5 mm
In the following, the resistance during the flow can be adjusted.

On the other hand, in the present invention, the floor panel 3, the ceiling panel 4, and the side panel 5 may be constituted by a hollow section panel as shown in FIG. 4, which is a stringer 11 using the plastic sheet as a skin material. . Such a hollow section panel can be obtained, for example, by pultrusion molding. Also in this case, a reinforcement spar 10 similar to that described with reference to FIG. 2 is provided in a portion corresponding to the car frame 2 illustrated in FIG.
The back plate 6 which does not need to be provided with a car frame may be formed as a flat hollow section panel as shown in FIG. As in the case of using the sandwich panel, all the plates constituting the cab can be constituted by hollow cross-section panels as shown in FIG. 5, in which case, a car frame made of FRP or metal is separately attached. . When a hollow cross-section panel as shown in FIGS. 4 and 5 is used, if the both ends in the left-right direction of the drawing have an open cross-section structure instead of a closed cross-section structure, it becomes easy to insert bolts and the like. This is preferable because the cab can be easily assembled.

In FIG. 6, a ceiling 4 constituting a cab,
Shown is an elevator cab in which the five sides of the sides 5, floor 3 and backboard 6 are made of continuous plastic sheets.
This configuration simplifies the configuration of each panel and further reduces the weight, and also greatly simplifies the assembling process and enables significant cost reduction. Examples of the forming method include a method of integrally manufacturing each panel by vacuum forming, press forming, and pressure forming, and a method of forming each panel and then integrating them by heat fusion or adhesion. The box material in which the plastic sheet is integrated is used as a skin material, and the other skin material such as a plastic sheet or an FRP plate is arranged at the desired position to form a hollow section panel, or a core material and the other skin material are used. By arranging them as sandwich panels, rigidity and strength required for an elevator can be secured.

In addition, there are cases where the elevator has a passage in both front and rear directions. In this case, the ceiling, the side, the floor and the back plate constituting the cab are constituted by continuous plastic sheets. Performance can be exhibited.

Of course, the elevator cab of the present invention can be divided and provided for transportation and transportation. As one of the preferred embodiments in the split configuration, FIG.
As shown in the figure, the elevator cab is composed of two side panel bodies in which the ceiling and side plates are integrated, a floor material, and a back plate in total of four parts. At this time, since the lower end of the side panel has a part of the floor material, it can be directly attached to the floor of the car frame material, so that the configuration of the connection part can be simplified. Further, as another example of a preferred embodiment in a divided configuration, as shown in FIG. 12, it is composed of five parts: one part for a ceiling, two parts for a side plate, one part for a floor, and one part for a back plate. At this time, it is preferable that the side plate has a part of the ceiling and a part of the floor so that the strength and rigidity of the joint with each part can be increased and the configuration of the joint can be simplified. Also, in this aspect, since each panel body is obtained in a substantially flat state, it is excellent in terms of transport efficiency,
In addition, the handleability during assembly is good.

As described above, in the present invention, it is preferable that the skin material of the sandwich panel and the hollow cross-section panel on both the indoor side and the outer side be made of a plastic sheet in terms of weight reduction. For other reasons, the skin material on one side may be a plastic sheet and the skin material on the other side may be made of another material. 2
When the hollow cross-section panel made of one skin material is made of a plastic sheet and another material, a hollow cross-section can be formed by joining the formed skin materials.

Further, as all the plates constituting the cab,
It is most preferable in terms of weight reduction to use a sandwich panel or a hollow cross-section panel having a plastic sheet as a skin material, but only the floor plate, only the side plate, the floor plate and the side plate, or only a desired part of the above members It may be constituted by a sandwich panel or a hollow section panel using a plastic sheet as a skin material. In particular, floor and ceiling panels, especially floor panels often require greater rigidity, so at least one skin material must be FRP
It is preferable to use a sandwich panel or a hollow section panel made of a plate. When it is necessary to further increase the rigidity of the floor panel or the ceiling panel, a sandwich panel or a hollow section panel in which the skin material on both sides is made of an FRP plate may be used.

At this time, as the reinforcing fibers used for the FRP, high-strength and high-modulus fibers such as carbon fibers, glass fibers, and polyaramid fibers can be used. Among them, a carbon fiber having excellent specific strength and specific elastic modulus, and a carbon fiber having a tensile strength of not less than 4,400 MPa and a tensile elongation of not less than 1.7%, a sandwich panel,
This is preferable because the impact resistance of the car is improved. FR
As the matrix resin of P, a thermosetting resin such as an epoxy resin, an unsaturated polyester resin, a phenol resin, and a vinyl ester resin or a thermoplastic resin is brominated or chlorinated to make it flame-retardant, or antimony trioxide, a halogen compound, or the like. The flame retardant can be used by adding a flame retardant.

The thickness of the FRP plate is preferably 1 to 5 mm in terms of rigidity and strength, and is selected according to the performance required for the cab.

The FRP board constituting the skin material is formed by, for example, laminating the above-described unidirectional prepregs of the reinforcing fibers, laminating a woven prepreg, or laminating a chopped strand mat prepreg, and then heating and pressing. It can be obtained by molding. Further, the cylindrical reinforcing spar can be obtained by, for example, pultruding.

In this case, a combination of two types of a case where the interior side is made of a plastic sheet skin and the outside is made of an FRP skin material and the interior side is made of an FRP skin material and the outside is made of a plastic sheet made of a skin material. From among them, it can be selected according to the design of the room, the rigidity and strength of the cab.

The use of FRPs containing reinforcing fibers aligned in the upward direction, in particular, the above-mentioned carbon fibers, not only improves the rigidity and strength, but also reduces the impact resistance of the car in the event of a collision due to a fall or runaway of the car. It is preferable because it improves.

Even when a sandwich panel in which all the panels constituting the cab are made of a plastic sheet as a skin material is used, the following method is used to reduce the weight and to effectively increase the rigidity of a desired portion. be able to. That is, as shown in FIG. 13, reinforcement can be performed by bonding another material to a plastic sheet of a panel constituting the cab at a corner or the like where stress is easily applied.
In this case, a sheet material of the same quality as the plastic sheet material may be attached by bonding, but in order to further improve the rigidity, reinforcing fibers are added to the plastic material, and the strength and strength are increased.
A sheet material formed of a material having increased rigidity may be attached by bonding. As the type of the reinforcing fibers, carbon fibers and glass fibers are preferable in terms of strength and rigidity. As the thickness of the reinforcing material, a sheet material of 1 to 3 mm or a modified angle formed in a predetermined shape is preferable.

Although the present invention has been described mainly with respect to a sandwich panel or a hollow section panel, the present invention is not limited to these.
An elevator car characterized by including, as a structural member of a cab, a panel having at least one surface made of a plastic sheet as a skin material is included in the technical scope thereof. One specific example is a form in which one skin material of a sandwich panel as shown in a cross-sectional view in FIG. 14 is omitted. This is particularly possible when the rigidity of the car frame of the elevator is sufficient. By using the interior side as a skin material, it is possible to secure the required hardness and design of the surface. By omitting the skin material on one side in this way,
Since the weight can be significantly reduced and the foamed foam is used, the effects of vibration characteristics and acoustic characteristics can be maintained, and a low-cost elevator cab can be provided. FIG.
By providing the ribs as shown in the sectional view of FIG. 5, the effect of improving the bending rigidity is exhibited. The end of the rib on the surface where there is no skin material may be exposed on the surface in terms of performance, but is preferably not exposed in production. FIG.
When attachment to the car frame or attachment of parts is required as shown in 6 and 17, it is preferable to partially sandwich the joint to maintain the strength and rigidity of the joint.

Also in this case, it is of course possible to reinforce the adhesion with the above-mentioned different material or to partially reinforce with a metal material in accordance with the required performance.

[0029]

According to the elevator car of the present invention having the above-described structure, the car room is made of FRP with reinforcing ribs.
Compared with a conventional car made of a single plate, even if the panel is thinner, greater rigidity and strength can be exhibited, and the weight can be further reduced by the effect of low specific gravity of the material.
Therefore, the power can be further reduced, and the present invention can be easily applied to a home elevator using a home power supply. In addition, since it is lightweight and has a small inertia, driving and control can be easily performed. Furthermore, since a plastic sheet is excellent in vibration damping property, particularly when a sandwich panel or a hollow cross-section panel using a thermoplastic resin sheet as a skin material is used, the vibration damping property is large, and there is an advantage that sound insulation or sound insulation is improved. is there.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an elevator car according to an embodiment of the present invention.

FIG. 2 is a schematic sectional view of a sandwich panel used in the present invention.

FIG. 3 is a schematic sectional view of another sandwich panel used in the present invention.

FIG. 4 is a schematic sectional view of a hollow sectional panel used in the present invention.

FIG. 5 is a schematic sectional view of another hollow sectional panel used in the present invention.

FIG. 6 is a schematic perspective view showing an elevator car according to an embodiment of the present invention.

FIG. 7 is a schematic sectional view of another sandwich panel used in the present invention.

FIG. 8 is a schematic sectional view of a sandwich panel having a convex portion on one side used in the present invention.

FIG. 9 is a schematic cross-sectional view of a sandwich panel having a convex portion on one side and a convex portion on the other side used in the present invention.

FIG. 10 is a schematic sectional view of a sandwich panel having convex portions on both surfaces used in the present invention.

FIG. 11 is a schematic perspective view showing an elevator car separated into four parts according to an embodiment of the present invention.

FIG. 12 is a schematic perspective view showing an elevator car separated into five parts according to an embodiment of the present invention.

FIG. 13 is a schematic perspective view of a sandwich panel having a reinforcing material used in the present invention.

FIG. 14 is a schematic cross-sectional view of a panel without a skin material on one side used in the present invention.

FIG. 15 is a schematic cross-sectional view of a panel without a one-sided skin material with ribs used in the present invention.

FIG. 16 is a schematic perspective view of a panel having a partial sandwich structure used in the present invention.

FIG. 17 is a schematic perspective view of another example of a panel having a partial sandwich structure used in the present invention.

[Explanation of symbols]

 1: Car room 2: Car frame 3: Floor plate 4: Ceiling plate 5: Side plate 6: Back plate 7: Car door 8: Core material 9: Skin material 10: Reinforced spar 11: Stringer 12: Uneven part 13: Floor material parts 14: Side panel parts 15: Backboard parts 16: Ceiling parts 17: Reinforcement 18: Ribs 19: Partial sandwich part

Claims (9)

[Claims] 1. A car for elevators, comprising as a structural member of a cab a sandwich panel having a plastic sheet as a skin material on at least one side or a hollow section panel having a plastic sheet as a skin material and a stringer. 2. A side plate and / or a back plate of a cab, at least one side of which is constituted by a sandwich panel using a plastic sheet as a skin material or a hollow section panel using a plastic sheet as a skin material and a stringer. A featured elevator car. 3. The floor and / or ceiling panel of the cab,
The elevator car according to claim 2, wherein at least one side is formed of a sandwich panel using an FRP plate as a skin material. 4. The cab floorboard, ceiling panel, and both side panels,
An elevator car characterized in that at least one side is constituted by a sandwich panel using a plastic sheet as a skin material or a hollow section panel using a plastic sheet as a skin material and a stringer. 5. The elevator car according to claim 4, wherein each of the plastic sheets constituting the floor panel, the ceiling panel, and both side panels is continuous. 6. A floor panel, a ceiling panel, both side panels, and a back panel of a cab are constituted by a sandwich panel having at least one surface made of a plastic sheet as a skin material or a hollow section panel having a plastic sheet as a skin material and a stringer. An elevator car characterized by having: 7. The elevator car according to claim 6, wherein the respective plastic sheets constituting the floor panel, the ceiling panel, both side panels, and the back panel are continuous. 8. A car for elevators, characterized in that at least one side of the car includes a panel made of a plastic sheet as a skin material, as a structural member of the cab. 9. The elevator car according to claim 2, wherein the sandwich panel or the hollow section panel is replaced with the panel according to claim 8.