Car for an elevator in an elevator shaft

Abstract

A car for an elevator in an elevator shaft is suspended substantially in the center of gravity thereof at least in a ratio of 2:1 by a carrying apparatus guided via pulleys and is guided through car guides. The car has a car base, a car roof and car walls that define a passenger space. For using the car in a machine room-free elevator, to provide a shaft cross-section as large as possible and to reduce the required shaft pit depth and/or the required shaft head height, at least a first part of one of the pulleys is located between the car base and the car roof and a second part of the pulley is located in the car base or at the same height as the car base or in the car roof or at the same height as the car roof.

Claims

1. A car for an elevator in an elevator shaft, which car is suspended at a center of gravity thereof at least in a ratio of 2:1 by a carrying apparatus guided via pulleys, and which car is guided via car guides, wherein the car includes a car base, a car roof and car walls enclosing a passenger space that can be accessed by a passenger, the passenger space having a floor positioned at a top surface of the car base, comprising: a first part of a one pulley of the pulleys is located in a region above the floor and below the car roof and a second part of the one pulley is located in the car base.

2. The car according to claim 1 wherein the first part of the one pulley is located in a region above the floor and below the car roof and the second part of the one pulley is inside a horizontal projection of a vertical extension of the car base.

3. The car according to claim 1 wherein an axis of rotation of the one pulley is located inside a horizontal projection of a vertical extension of the car base.

4. The car according to claim 1 including a cover separating the one pulley from the accessible passenger space.

5. The car according to claim 1 wherein the carrying apparatus extends below the car base or through the car base and is guided from one side of the car to an opposite side of the car by the pulleys.

6. The car according to claim 1 wherein at least one of the car walls, a formed cover, a baseboard, or a control panel separates the one pulley from the passenger space.

7. The car according to claim 1 wherein the one pulley is located in a box-shaped car region in a region above the floor and below the car roof, with outer edges of the box-shaped car region being congruent with exterior outer edges of the car base.

8. The car according to claim 1 wherein the one pulley is located in a box-shaped car region in a region the floor and below the car roof, with outer edges of the box-shaped car region being congruent with a largest expression of inside walls of the car.

9. The car according to claim 1 wherein an outer height of the car base tapers out in a region of at least one of the carrying apparatus and a car buffer attached to the car.

10. The car according to claim 1 wherein the car is configured as self-supporting without a car frame.

11. The car according to claim 1 wherein a cover separates the one pulley from the passenger space and the cover is removable.

12. The car according to claim 1 wherein the carrying apparatus is arranged laterally next to the car at least partially in a region within one of the car walls.

13. A car for an elevator in an elevator shaft, which car is suspended at a center of gravity thereof at least in a ratio of 2:1 by a carrying apparatus guided via pulleys, and which car is guided via car guides, comprising: a car base; a car roof; car walls cooperating with the car base and the car roof to enclose a passenger space that can be accessed by a passenger, the passenger space having a floor positioned at a top surface of the car base; and wherein a first part of each of the pulleys is located in a region above the floor and below the car roof and a second part of each of the pulleys is located in the car base.

Description

DESCRIPTION OF THE DRAWINGS

(1) Below, the invention is explained in further detail on the basis of several exemplary embodiments. The following is shown:

(2) FIG. 1 is a perspective view of a car with carrying means that are located below the car base in a recess;

(3) FIG. 2 is an elevation view of a car with carrying means that are located below the car base;

(4) FIG. 3 is an elevation view of a car with carrying means that are located in the car base;

(5) FIG. 4 is an elevation view of a car with carrying means located in the suspended car ceiling;

(6) FIG. 5 is a top plan view of an elevator shaft with a car and its pulley, which is integrated in the car base and covered by an undulated cover;

(7) FIG. 6 is a perspective view of a car with undulated cover;

(8) FIG. 7 is a perspective view of a car with oval covers;

(9) FIG. 8 is a perspective view of a car with control panel and baseboard as covers;

(10) FIG. 9 shows Detail E from FIG. 5;

(11) FIG. 10 is an Illustration of the box-shaped car region, with the outer edges being congruent with the outer edges of the car;

(12) FIG. 11 is an Illustration of the passenger space when using concave covers;

(13) FIG. 12 is a cross-sectional view of an elevator shaft with a car in which the pulleys are arranged in the car base according to the prior art; and

(14) FIG. 13 is a cross-sectional view of an elevator shaft with a car in which one part of the pulleys is arranged in the car base and a second part above the car base.

DETAILED DESCRIPTION

(15) A first exemplary embodiment is shown in FIGS. 1 and 6. They show a car for an elevator which is suspended in its center of gravity in a ratio of 2:1 by means of carrying means or apparatus 10 guided via pulleys.

(16) FIG. 5 shows this car in an elevator shaft 18 with the corresponding Detail E in FIG. 9. The top view shows how the car is guided by the car guides 17 in guide rails 11, which are attached to the elevator shaft 18 by means of rail brackets 12. The elevator shaft 18 also houses the counterweight 19, which is guided in counterweight guide rails 20, which are attached to the elevator shaft 18 with counterweight rail brackets 21. The counterweight 19 is suspended on the carrying means with the counterweight pulley 24 and includes a counterweight buffer 25.

(17) The car has a car base 1 and a car roof 4, under which a suspended car ceiling 5 is located. The suspended car ceiling 5 contains, for example, the interior car lighting, which is not shown. The accessible passenger space 2 is delimited by car walls 13, an undulated cover 7, and a two-winged car door 16. It can be entered through the car door 16 which is arranged above a car door sill 15 when the car is adjacent a shaft door 22. The car walls 13 consist of several panels connected with each other through back-folds.

(18) The carrying means 10 that are used here as flat belts run around the two pulleys 6 under the car base 1 and laterally along the car walls 13 and upward into the shaft head. The carrying means 10 run on one side to the drive and from there to the counterweight pulley 24 and from there again toward in the direction of the shaft head.

(19) So that no additional space is required for the pulley 6 on the counterweight side in the cross-section of the shaft, one of the two pulleys 6 is arranged so closely to the middle of the car that its carrying means 10 can be guided upward in the car wall 13. FIG. 9 discloses this detail.

(20) Since this car is designed for a shaft pit depth of 150 mm, some of the pulley 6 is integrated both in the car base 1 and some in the region between the car base 1 and the car roof 4. To ensure that the pulley does not interfere with the passenger space 2, it is covered by an undulated cover 7, which reaches from the car base 1 to the car roof.

(21) The second pulley 6 on the opposite side of the car is arranged at the same height, but lateral to the car base 1. This version is chosen when the car wall 13 is to be straight on this side and the elevator shaft 18 has enough space for the pulley 6 at the side.

(22) The attachment means 23, in this example screws, protrude from the panels to the center of the car. So that they are not noticed by the passenger, the undulated cover 7 is to be designed in such a way that these screws as well as the pulley 6 on the counterweight side are covered.

(23) Recesses are formed in the car base 1, and four car buffers 9 are inserted in these. Another recess in the car base 1 is provided for the carrying means 10.

(24) Overall, the special arrangement and selection of the required components, particularly the pulleys 6, the carrying means 10, and the car buffers 9, make it possible to reduce the required space under the floor for passengers to a minimum and achieve a shaft pit depth of 150 mm. The required shaft width is much smaller than for currently known solutions. So that the advantages of the compact construction can be fully utilized, the car is preferably provided for machine room-less elevators.

(25) In FIG. 2, the version shown in FIGS. 1, 5, and 9 has been modified in that the over-all car base 1 is even thinner and does not have a recess for the carrying means 10. The carrying means run below the base. Both pulleys 6 have been moved so far in the direction of the center of the car that the shaft width can be even smaller. Both pulleys 6 are covered by baseboards 14. The car buffers 9 are arranged on the side so that they partially protrude over the car base 1. Therefore, it is possible to use long car buffers 9 as well. The very thin car base 1 consists, for example, of two plates, and the space between them is filled with aluminum foam for reinforcement purposes.

(26) The exemplary embodiment in FIG. 3 is different from those above in that the carrying means 10 are not guided under the car base 1, but in the car base 1 in a duct from one side of the car to the other.

(27) In an exemplary embodiment shown in FIG. 4, the pulleys 6 are arranged in such a way that the carrying means 10 run below the car roof 4. The pulleys 6 protrude here only so far into the region between the car roof 4 and the car base 1 that they can still be accommodated in the suspended car ceiling 5. The pulleys 6 used here have a diameter of 80 mm. They can therefore be fully accommodated in the car roof 4 with a thickness of 50 mm and the suspended car ceiling 5, which has a thickness of 50 mm as well.

(28) Since the pulleys 6 do not protrude upward past the roof, the required shaft head is only determined by the components in the shaft head that are independent from the car and by the car height, and not by the pulleys 6. This special arrangement of the pulleys 6 makes it possible to reduce the required space above the car roof 4 to a minimum.

(29) FIGS. 7 and 8 show two possibilities how the cover 7 of the pulleys 6 can be realized in such a simple way that passengers are impaired as little as possible.

(30) In FIG. 7, the cover 7 of the passenger space 2 is arched in an oval shape such that at least the part of the pulley 6 that protrudes into the region between the car roof 4 and the car base 1 is covered by the cover 7 and therefore not noticed by the passenger. The oval shaping of the passenger space 2 can preferably occur only on the side, either at the top or the bottom, where the pulleys 6 reach into the passenger space 2.

(31) In FIG. 8, a required control panel 8 is used in the passenger space 2 to serve as a cover 7 for the part of the pulley 6 that protrudes into the passenger space 2. On the opposite side, the part of the pulley 6 that protrudes into the passenger space 2 is covered by a baseboard 14.

(32) FIG. 10 illustrates the box-shaped car region 3 between the car base 1 and the car roof 4 in which the pulley 6 is located, in which the outer edges of the box 3 are congruent with the outer edges of the car base 1.

(33) FIG. 11 illustrates which area below the passenger space is referred to in the exemplary embodiment with an oval cover 7.

(34) FIG. 12 shows a cross-section through an elevator shaft 18 with a car in which the pulleys 6 are arranged in the car base 1 according to prior art and therefore illustrates that the required shaft pit depth is greater than 150 mm. The building plate 26 is perforated for the elevator shaft 18.

(35) FIG. 13 shows a cross-section through an elevator shaft 18 with a car in which one part of pulleys 6 is arranged in the car base 1 and a second part above the car base 1. It is clear that the invention only requires a shaft pit depth of 150 mm. The building plate 26 does not have to be perforated, because the building base 27 is 150 mm high.

(36) In accordance with the provisions of the patent statutes, the present invention has been described in what is considered to represent its preferred embodiment. However, it should be noted that the invention can be practiced otherwise than as specifically illustrated and described without departing from its spirit or scope.

LIST OF REFERENCE NUMBERS

(37) 1 Car base 2 Passenger space 3 Box-shaped car region 4 Car roof 5 Suspended car ceiling 6 Pulley 7 Cover 8 Control panel 9 Car buffer 10 Carrying means 11 Guide rail 12 Rail bracket 13 Car wall 14 Baseboard 15 Car sill 16 Car door 17 Car guide 18 Elevator shaft 19 Counterweight 20 Counterweight guide rail 21 Counterweight rail bracket 22 Shaft door 23 Attachment element 24 Counterweight pulley 25 Counterweight buffer 26 Base slab of the building 27 Building base