FI80434C - SKJUTLED I EN HISS. - Google Patents

Description

80434

ELEVATOR SLIDER - GLIDSTYRORGAN FÖR HISS

The invention relates to an elevator sliding guide comprising a frame part, a sliding part and a suspension unit connecting these.

The elevator car rests on the guides of the elevator shaft with guides. The most cost-effective type of guide is the sliding guide and is therefore commonly used in slow elevators. The sliding guide consists of three functional subassemblies: a sliding part resting on the guides, a frame part which fastens the guide to the elevator car, and a suspension between them which transmits support forces from the guide to the sliding part to the elevator car. The driving comfort experienced by the passenger in the elevator depends a lot on how the impact forces generated by the guides as they pass over the unevenness of the guides are transmitted to the elevator car. This can be influenced by the suspension between the slider and the body.

In conventional elevators, the horizontal suspension is often implemented only in the lateral direction of the elevator car, i.e. in the direction of the connection axis between the guides, using, for example, a coil spring in the suspension. In the constructions, joints and spring adjustment may have been attached to the suspension. Damping has been used somewhat alongside the spring. The solutions used are either shock absorbers alongside the spring or rubber-cushioned pieces based on the deformation losses of the medium. In conventional sliding guides, the damping and often also the suspension substantially affect only one horizontal direction.

When constructing suspension or a combination of suspension and damping in sliding guides by conventional methods to reduce oscillations in different directions in the horizontal plane of the elevator car so that oscillations due to possible unevenness of the guide during driving do not substantially have a detrimental effect on driving comfort. Often, sliding guides are limited to damping and springing only the lateral direction of the elevator car. Likewise, the guide dampers often lack the actual damping part completely and the possible damping comes as a by-product of other features and is partly unplanned.

For price reasons, sliding guides generally use quite simple damping and suspension solutions, which are at least somewhat unsatisfactory in terms of ride comfort.

Today, the guide shoe can be sprung in the lateral direction of the body by means of a shaft moving inside the tube and a compression spring. There is no suspension in the depth direction of the car, which is why there is room for improvement in the elevator's driving comfort.

Today, the guide shoe can also be attached to the guide body with rubber or soft polyurethane or the like. The damping due to the internal friction of the material is small compared to the sliding or liquid friction damping.

U.S. Patent No. 4,652,146 discloses a slide guide with a U-shaped metal body. It is also fitted with a U-shaped plastic slider that moves in the guide. The sliding part is suspended in the notches in the body part by horizontal strips in the sliding part. The sides of the body part of the sliding part have leaf springs which reduce the clearance during the sliding part and ensure sliding contact between the Liu part and the guide. The springs are attached to the sliding part. Said structure uses separate suspension members and springs, making the structure complex.

It is an object of the present invention to obviate the above drawbacks. The basic premise of the invention is to provide a structure which allows the suspension and damping of all horizontal movements of elevators with sliding guides, which would still be inexpensive and which does not require additional space between the elevator car and the elevator shaft compared to previous unsatisfactory solutions. It is a further object of the invention to extend the use of sliding guides to even faster elevators.

The elevator slide guide according to the invention is characterized in that the suspension unit has at least one vertically rigid and plate-like suspension member which is attached to or forms part of the frame and the sliding part.

A preferred mode of operation of the sliding guide according to the invention is characterized in that the body and the sliding part are also connected to each other by at least one friction-type damping part.

Other preferred embodiments of the slider according to the invention are characterized by the things set out in the other claims.

The solution according to the invention achieves a simple structure as well as the desired flexibility between the elevator guide shoe and the car in all horizontal directions. The solution is cheap, reliable and free of adjustment. The damping force is independent of the magnitude of the second horizontal guide force, in contrast to current structures, where the distortion of the damping structure or the dependence of the frictional force on the guide forces causes changes in the damping term. The spring constant is fixed and does not need to be adjusted. However, the spring constant can be set with the spring design. The damping is also pluggable and works with a simple structure used in all horizontal directions.

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In the following, the invention will be described in more detail by means of examples with reference to the accompanying drawings, in which

Figure 1a shows a sprung slide guide.

Figure Ib shows a cross-section of a sprung guide.

Figure 1e is a cross-sectional view of a sprung slide guide.

Figure 2 shows a cross section of a second sprung guide.

Figure 3a shows a sliding guide with damping parts.

Figure 3b shows a top view of a sliding guide with damping parts.

Fig. 1a shows a spring-loaded sliding guide, Fig. Ib a cross-section and Fig. 1a a cross-section A-A of the sliding guide. The sliding guide consists of a sliding part 8, a body part 7 and a suspension of the Liu pattern on the body part. The sliding part has a guide shoe 2 and a one- or more-piece sliding piece 1. The frame part comprises a frame 4 and a frame plate 6, from which the sliding guide is attached to the car frame of the elevator (sometimes also to the car, leg frame, etc.). The suspension between the sliding part and the body part is formed by two bent plate-like elements 5 which are semicircular in shape and rigid in the vertical direction. They are attached at one end to the front edge of the guide shoe of the guide and at the other end to the rear side of the end portion of the body portion. Together with the body and the sliding part, they form a flexible circumference. They spring the horizontal displacements of the elevator car with respect to the guides. One or more friction damping members (not shown in the figure) can be connected in parallel with the suspension.

By using this structure, the spring constants can be made the same in different directions, or by flattening the perimeter or the elements or by shaping the elements, the depth constant in the direction of the pistol dimension and the body can be set different. Since the elastic circumference consisting of the spring elements and the sliding and frame part is clearly larger in dimensions than the displacements of the elevator car with respect to the guides, the elastic properties remain designed even if there is a simultaneous displacement in both the transverse and depth directions of the car.

Between the slider and the body part there are three buffers 3 between the walls of each slider and the body part, fixed to the body parts, usually made of a flexible material such as rubber, which limit the movement of the slider part relative to the body so that the slider part or guide don't get hit by the body.

The suspension member can be of different thickness at different points. In addition, the suspension member is shaped or bent to achieve the desired spring constant. The spring constant can be progressive and also different with respect to different horizontal transition directions.

Figure 2 shows a second guide with two suspension members 9 in a helical shape. Their first end is fixed to the side wall of the guide shoe 2 of the sliding part and the second end to the outer surface of the side wall of the body part.

Fig. 3a shows a sliding guide with damping parts and Fig. 3b the same sliding guide from above. The guide has a sliding part 10, curved suspension members 11 and a body part 12. Fig. 3a shows a section C-C shown in Fig. 3b, which shows the structure of the friction-type damping parts 13. The sliding part has two projections 14 fitted in grooves 15 in the body part. Both the projections 14 and the grooves 15 have horizontally arranged friction surfaces 16 and 17 so that they rub against each other to dampen the horizontal oscillations of the elevator car. Figure 3b further shows a section B-B of the slide guide of Figure 3a.

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The sliding part and the suspension part (suspension unit) can be one piece made of plastic, for example by molding, which is attached to the body part.

It will be apparent to those skilled in the art that the various embodiments of the invention are not limited to the examples set forth above, but may vary within the scope of the claims set forth below.

II

Claims (10)

1. A sliding control means for a lift, to which a body part (7; 12), a sliding part (8; 10) and a suspension unit are thus connected, characterized in that there is at least one substantially in the vertical direction in the suspension unit. rigid and disc-shaped suspension means (5; 9; 11), which is attached to or forms part of the stone and sliding portion. Sliding control means according to claim 1, characterized in that the stone and sliding part are also connected to each other with at least one friction-type dipping part (13). Sliding control means according to any one of claims 1 to 2, characterized in that there is at least one buffer (3) between the stone and the sliding part preventing the sliding part or the guide rail from hitting the stone part. Sliding control means according to any of claims 1 to 3, characterized in that the spring means is designed and / or bent to obtain a desired spring constant. Sliding control means according to claim 4, characterized in that the spring means is not thick at any places. Sliding control means according to any one of claims 1 to 5, characterized in that the actuating means of said suspension means or said suspension means (5; 9; 11) form a closed circuit. 10 80434 Sliding control means according to any of claims 1 to 6, characterized in that the body and sliding part (7,8; 10,12) form part of said circuit. Sliding control means according to any one of claims 1 to 7, characterized in that the sliding part and the eating face tone a spring means are a e.g. plastic molded piece, which is attached to the body part. Sliding control means according to any one of claims 1 to 8, characterized in that there are two semi-circular suspension means (5) in the suspension unit which are substantially vertical in the suspension unit, one end of which is attached to the leading edge of the sliding part or near it and the other end. at the end portion of the body. Sliding control means according to any one of claims 1 to 8, characterized in that substantially helical spring means (9) are arranged in the suspension unit in the vertical direction, one end of which is fixed to the sliding part and the other end to the side wall of the body. i r