JPH0215903Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to improvement of an elevator system, and particularly aims to suppress the width of the gap formed between the elevator hoistway ceiling and the elevator car.

A conventional elevator will be explained based on FIGS. 1 and 2. In FIG. 1, 1 is an elevator hoistway, and 2 is a hoistway 1
4 is an elevator car that goes up and down along this guide rail 2 via vertical support frames 5, 5; 6 is a pair of vertical support frames 5, 5;
An upper beam erected and fastened between the upper ends, 7 is a return wheel that guides a main rope 8 attached to the approximate center of the upper beam 6 to a drive device, which will be described later, and 9 supports the return wheel 7 via a shaft 10. A pair of support beams 11 are drive devices equipped with a plurality of pulleys that drive the elevator car 4 up and down via main ropes 8, and a chamber 12 is integrally formed with the pulleys at the bottom of the elevator hoistway 1. stored within.

By the way, a pair of support beams 9, 9 that pivotally support the return wheel 7 are connected to the hoistway ceiling 1a and the elevator car 4.
It is located between the car ceilings at the point where it reaches the top, and is installed approximately at the center of both walls of the hoistway 1, as shown in FIG. The dimension L between the lower surfaces of these support beams 9 and 9 and the upper surface of the upper beam 6 of the support frame of the car 4 is stipulated to be equal to or larger than a legally prescribed dimension. This is necessary in order to secure space for security inspection personnel to ride and inspect outside the top plate of the car 4.
However, since the above-mentioned safety inspection space is required at the top of the hoistway 1 in addition to the space where the elevator moves up and down, the inspection space protrudes from the other top floors, and the manner in which it protrudes is Especially 3～
This is noticeable in low-rise buildings with 4 floors. Therefore, in buildings in urban areas, such protruding parts on the roof block the sunlight to the adjacent buildings,
This had become an obstacle when installing an elevator.

The present invention has been made in order to eliminate the above-mentioned drawbacks, and in an elevator system in which a car is suspended and driven via a return wheel provided at the top of a hoistway, the support beam of the return wheel is connected to the car. An elevator system is proposed in which the rear edge of the support beam and the front edge of the car are constructed and fixed closer to the entrance side wall surface than the passing extension surface of the leading edge without overlapping in their vertical projection planes. It is.

The following description will be given based on the illustrated embodiments, with the same or corresponding parts as those of the prior art being given the same reference numerals. Figures 3 and 4
As is clear from the figure, this embodiment differs from the conventional structure in that the support beam 9 supporting the return wheel 7 is moved in parallel to the entrance side of the hoistway of the elevator car 4. That is, the support beam 9
are installed in front of both side walls of the hoistway 1 while maintaining the same height as before, and these support beams 9 are located closer to the hoistway wall than the front edge of the entrance side of the car 4, as shown in FIG. It is arranged like this. In accordance with the biased arrangement of these support beams 9, the return wheel 7 and guide rail 2 are also biased toward the elevator tower entrance side as shown in the figure. Therefore, the conventional safety space dimension L can be considered based on the dimension between the upper surface of the upper beam 6 and the hoistway ceiling 1a as shown in Figure 3; The space can be suppressed and reduced by the dimension l between them, and as a result, the protrusion of the building can be suppressed by the same dimension l.

5 and 6 show another embodiment of the present invention, and in this embodiment, the support beams 9 of the return wheel 7 are attached to the front of both side walls of the hoistway 1, as in the embodiment described above. However, at both ends of these support beams 9 are guide rails 2, 2.
The structure differs from the above embodiment in that the upper end of the structure is fastened. By adopting the configuration in which the guide rails 2, 2 are interwoven and installed at the frontmost part of the car 4, the guide rails 2, 2 can be installed from the elevator entrance side, and assembly can be done as in the conventional case. There is no need to use scaffolding, and the installation cost of the elevator system can be reduced. Further, by installing the guide rails 2, 2 on the entrance side, an effect can be obtained in that the rotational moment acting on the car 4 can be supported by the pair of guide rails 2, 2. In addition, the above-mentioned return wheel 7 has a fixing fitting 13 attached to the support beam 9,
14 and a shaft 10 attached to this support beam 9 so as to be rotatable.

As described above, according to the present invention, by moving the support beam that supports the return wheel to the front side of the elevator car and attaching it to the wall surface, the height of the space formed between the elevator car located on the top floor and the ceiling of the hoistway is increased. This makes it possible to significantly reduce or eliminate the protrusion of the building that is formed at the elevator installation position in a low-rise building.

[Brief explanation of drawings]

1 and 2 are a side view and a plan view showing an elevator according to the prior art, and FIGS. 3 and 4 are similar to FIGS. 1 and 2, showing an elevator according to an embodiment of the present invention. 5 and 6 are views similar to FIGS. 1 and 2, showing an elevator showing another embodiment of the present invention. 1: Elevator hoistway, 4: Elevator car, 7: Return wheel, 9: Support beam.

Claims (1)

[Scope of utility model registration request] In an elevator system in which a car is suspended and driven via a return wheel provided at the top of a hoistway, the support beam of the return wheel is positioned closer to the entrance side wall surface than the passing extension surface of the car leading edge. An elevator system characterized in that the rear edge of the beam and the front edge of the car are constructed and fixed without overlapping in their vertical projection planes.