EP2902355A1

EP2902355A1 - Sliding elevator door comprising a movement mechanism with linear bearing

Info

Publication number: EP2902355A1
Application number: EP15153629.9A
Authority: EP
Inventors: Ayse Demir
Original assignee: Merih Asansor Sanayi ve Ticaret AS
Current assignee: Merih Asansor Sanayi ve Ticaret AS
Priority date: 2014-02-03
Filing date: 2015-02-03
Publication date: 2015-08-05

Abstract

The invention relates to a sliding elevator door (1) that comprises linear-bearing guide (11) which surrounds the linear guide (70), to which said mechanism carrier (20) is connected and which moves linearly on the linear guide (70); and said linear guide (70) on which said linear bearing guide (11) moves.

Description

Technical Field

The invention relates to sliding elevator doors which are utilized for opening and closing the elevator openings, comprise a movement mechanism moving on a specific linear guide.
The invention especially relates to sliding elevator doors which are utilized for opening and closing the elevator openings, move on the linear guide, comprise a linear-bearing guide made of the same material as that of said linear guide and constituting void-free structure by allowing a contact therewith from multiple points.

State of the Art

Today, the movement of the door panels along a linear plane is provided with a movement transmission system which comprises mechanism carriers having thereon a fixed rail profile and rollers suitable to the geometry of said rail profile in the sliding door configurations frequently used in the elevators. Such rollers on the mechanism carriers used in the movement transmission system are embedded with a radial bearing on a shaft passing through the axis of said rollers. The outer surface is generally produced from polymer with a geometry suitable to the form of the rail profile. Although the rollers made of polymer advance by rolling on the rail profiles made of metal materials such as steel and aluminum, wear and deteriorations may occur on polymer outer shell in time as the weights of the door panels directly act on these rollers. Said wear and deteriorations on the rollers cause vibrations during the movement of the door, thus a noisy and an uncomfortable operation.
The utility model No. 2008 06541 , which is registered in Turkish Patent Institute, relates to a sliding movement mechanism which is used beneath door and window profiles opening and closing in a sliding manner as defined above, wherein it consists of U-shaped sheet metal bearing comprising thereon screw hole, curved pin housing and lug; sheet metal motion bearing disposed inside the bearing and comprising therein wheels, pin and split pin; sheet metal body comprising thereon recess, pin housing, screw hole, mounting hole and comprising therein bearing and motion bearing; screw disposed in the screw hole on the body and in the screw hole on the bearing; segment disposed on the screw; and spring. Similar to said utility model, the contact surface between the roller and rail profile is nearly as small as a point in the mechanisms used in the elevators. Therefore, at least four or more rollers are needed so as to limit the degree of freedom on the rail profile of the mechanism carrier and to obtain a linear motion on only a single plane. Four rollers of the aforementioned type which are made into a product after a significant labor step are provided on the mechanism carrier. Considering the fact that the sliding elevator door systems consist of at least two panels and one mechanism carrier is required for each panel, the number of the rollers used should at least be eight. Besides, in case there are more than two panels, this number will be increased in the multiples of four. Accordingly, material and labor costs will increase proportionally.
Another requirement in the current mechanism carriers is to have an adequately long vertical distance between the two rail rollers positioned in a manner to take the rail profile therebetween. When the distance is reduced, the rotational momentum occurring on the mechanism carrier cannot be met due to the weight of the door panel and the mechanism carrier deviates angularly from the plane where it is required to operate. To overcome this drawback, in such door configurations having mechanism carrier, the rail profile is required to have adequately large sizes. The larger configuration, however, increases the amount of material and the labor force.
To conclude, due to the need for sliding elevator doors which are utilized for opening and closing the elevator openings, move on a linear guide used instead of the rail profile in the prior art, comprise a linear-bearing guide made of the same material as that of said linear guide and constituting void-free structure by allowing a contact therewith from multiple points, and the inadequacy of the existing solutions, a development is deemed necessary to be made in the technical field.

Objects of the Invention

The invention aims to introduce different technical properties providing a new development in the related technical field, distinctly from the embodiments used in the state of the art.
The main object of the invention is to provide the contact between the movement mechanism and the linear guide from multiple points by using linear-bearing guide instead of the rollers having radial bearing within the movement mechanism. Thanks to this property, it will be adequate to use only one linear-bearing guide instead of the roller having at least four radial bearing for a structure that will constitute a movement mechanism. Thereby, both the material costs and the labor costs are reduced.
Another object of the invention is to reduce the sizes compared to the rail profile used in the prior art thanks to the linear guide being completely gripped by the slide. By this means, the sizes of the mechanism carrier are also minimized, thereby the total area covered by the movement transmission system and the body sizes are reduced as well. Mechanism carrier and body costs are lowered, the rail profile cost is completely eliminated and area is saved by reducing the sizes. Moreover, the smallest mountable sliding elevator door size is also minimized.
Another object of the invention is to eliminate the wear and corrosion between the moving elements thanks to the linear-bearing guide and the linear guide being made of the same material. By this means, rough, noisy and uncomfortable operation is prevented. Besides, the lifetime of the system is prolonged and the labor and maintenance costs are minimized.
The structural and characteristic features and all the advantages of the present invention will be more clearly understood thanks to the figures below and the detailed description written with reference to those figures; therefore, the evaluation needs to be done by taking said figures and the detailed description into consideration.

Figures to Facilitate Understanding of the Invention

The present invention should be evaluated with the figures described below to ensure the best understanding of the configuration and advantages together with the additional elements of the invention.

Figure 1 a: The general view of the sliding elevator door according to the invention.
Figure 1 b: The general view of the sliding elevator door of the prior art.
Figure 2a: The perspective view of the movement mechanism with linear bearing of the sliding elevator door according to the invention.
Figure 2b: The perspective view of the movement mechanism with roller having radial bearing of the sliding elevator door of the prior art.
Figure 3a: The cross sectional view of the movement mechanism with linear bearing of the sliding elevator door according to the invention.
Figure 3b: The cross sectional view of the movement mechanism with roller having radial bearing of the sliding elevator door of the prior art.

Scaling of drawings is not absolutely required and details, which are not needed for understanding the present invention, may have been neglected.

Part References

1: Sliding elevator door
11: Linear-bearing guide
15: Radial roller
16: Radial bearing
17: External roller
20: Mechanism carrier
30: Door panel
40: Rail profile
50: Body
60: Rope roller
61: Rope
70: Linear guide

Detailed Description of the Invention

In this detailed description of the invention, the sliding elevator door (1) according to the invention is described by way of examples only for a better understanding of the subject without any limiting effect.
The preferred configuration of the sliding elevator door (1) according to the invention comprises a body (50), linear guide (70), door panel (30), mechanism carrier (20), and a linear-bearing guide (11) which surrounds said linear guide (70), to which said mechanism carrier (20) is connected and which moves linearly on the linear guide (70).
The general views of the sliding elevator doors (1) of the present invention and of the prior art are given in Figure 1 a and 1 b, respectively. The body (50) is positioned in the upper section of the opening in the elevator opening surface in both of them. In the prior art, the rail profile (40) is located in the lowermost end of the body (50) and two rope rollers (60) are fixedly located on the body (50) in both sides of the rail profile (40). In the configuration according to the invention, however, linear guide (70) is used instead of the rail profile (40). In each door panel, one linear-bearing guide (11) is disposed on one linear guide (70) and can reciprocate. Linear-bearing guides (11) are disposed, one of which is mounted to a mechanism carrier (20). Mechanism carriers (20) are also connected to the door panels (30). Rope (61) is stretched between the rope roller (60) and the mechanism carrier (20).
The perspective views of the movement transmission systems of the sliding elevator doors (1), which are used in the elevators, of the present invention and of the prior art are given in Figure 2a and 1b, respectively. The cross sectional views of the movement transmission systems of the sliding elevator doors (1) of the present invention and of the prior art are given in Figure 3a and 3b, respectively. In the sliding elevator doors (1) of the prior art, the mechanism carrier (20) to which the door panel (30) is connected in the movement transmission system comprises a radial roller (15) consisting of radial bearing (16) and the external roller (17). The radial roller (15) rotates by being embedded with the radial bearing (16) on the shaft at the axis thereof and contacts with the rail profile (40) over the external roller (17) in a single point. In the sliding elevator door (1) according to the invention, the mechanism carrier (20) to which the door panel (30) is connected in the movement transmission system consists of linear-bearing guide (11) comprising linear bearing. The linear bearing comprised by the linear-bearing guide (11) moves on the linear guide (70). As the linear-bearing guide (11) comprises bearing with balls arranged linearly, the linear-bearing guide (11) contacts with the linear guide from multiple points.
When the sliding elevator door (1) according to the invention used in the elevators is closed, the door panels (30) are in adjacent position and prevent opening. When the open command is received, force is applied to one of the door panels (30) in the opening direction by means of the drive element. The door panel (30) subjected to the opening force moves along with the mechanism carrier (20) to which it is connected, and transfers the motion thereon to the rope (61). The motion on the rope (61) is directed to the other mechanism carrier (20) and thus to the other door panel (30) by means of the rope roller (60). Both mechanism carriers (20) with the force thereon move outwardly in a reverse manner to each other on the linear guides (70) by means of the linear-bearing guides (11). During this movement, the linear bearing comprised by the linear-bearing guide (11) advances and moves on the surfaces of the linear guide (70). When the sliding elevator door (1) reaches to the required opening, the force applied to the door panel (30) is cut and the movement is stopped. When the sliding elevator door (1) is desired to be closed, however, this time force is applied on the door panel (30) in the reverse direction and this force is directed to the rope (30) by means of the mechanism carrier (20) and then to the other door panel (30) by means of the rope roller (60). Both mechanism carriers (20) with the force thereon and the linear-bearing guide (11) to which it is connected move inwardly in a reverse manner to each other on the linear guide (70). During this movement, the linear bearing comprised by the linear-bearing guide (11) advances and moves on the surfaces of the linear guide (70). When the sliding elevator door (1) is completely closed, the force applied to the door panel (30) is cut and the movement is stopped.
In one configuration of the invention, the linear-bearing guide (11) and the linear bearing comprised therein can be produced from the same material.
In the preceding paragraphs, the operation of the sliding elevator door (1) is described through a panel which is opened from the center with two panels. Besides, the length of the linear guide (70), the number of the linear-bearing guide (11), mechanism carrier (20) and door panel (30) can be increased and the panels (30) can be gathered in a single side by establishing different mechanical connections between the moving elements of the door panels (30).

Claims

A sliding elevator door (1) which comprises
- door panel (30),

- body (50),

- mechanism carrier (20),

- rope (61) which indirectly transfers the force on any door panel (30) or mechanism carrier (20) to the other door panels (30) or the mechanism carriers (20),

- rope roller (60) moving said rope (61),
characterized by comprising
- linear-bearing guide (11) which surrounds the linear guide (70), to which said mechanism carrier (20) is connected and which moves linearly on the linear guide (70);

- said linear guide (70) on which said linear bearing guide (11) moves.