Technical Field
[0001] 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.
[0002] 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
[0003] 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.
[0004] 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.
[0005] 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.
[0006] 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
[0007] 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.
[0008] 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.
[0009] 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.
[0010] 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.
[0011] 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
[0012] 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.
[0013] Scaling of drawings is not absolutely required and details, which are not needed
for understanding the present invention, may have been neglected.
Part References
[0014]
- 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
[0015] 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.
[0016] 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).
[0017] 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).
[0018] 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.
[0019] 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.
[0020] In one configuration of the invention, the linear-bearing guide (11) and the linear
bearing comprised therein can be produced from the same material.
[0021] 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).