KR100971664B1 - Link assembly for sliding door - Google Patents

Abstract

PURPOSE: A link assembly for a sliding door is provided to efficiently use a space of each structure by reducing the installation width of an opening and closing device, and to be used in a narrow space. CONSTITUTION: A link assembly for a sliding door comprises a lead screw(40), a lead nut(80), a nut holder(210), a link member(230), and pivot units(240,250). The lead screw is rotated. The lead nut is linearly moved depending on the rotation of the lead screw. The nut holder is connected to the lead nut and is moved with the lead nut. And the nut holder has a protrusion. The link member accepts the protrusion of the nut holder. The pivot units move the link member.

Description

LINK ASSEMBLY FOR SLIDING DOOR

The present invention relates to a sliding door link device that can be applied to an entrance door of an electric train or a screen door of the platform, and more particularly, to an improved sliding door type opening / closing device suitable for an environment requiring a small installation space, ≪ / RTI >

Electric trains have several sets of doors for each vehicle, and a screen door is also provided in the platform to correspond to the doors of each vehicle. The door for a train or the screen door of the platform is a sliding door made up of two pairs which are opened and closed in both right and left directions, and the plurality of sets are opened / closed at once by remote control.

BACKGROUND ART [0002] A sliding door opening / closing apparatus such as a door for a train or a screen door has been mainly applied to a hydraulic or pneumatic type wire or a belt driven type as its driving means. However, the hydraulic or pneumatic type includes solenoid valves for controlling the hydraulic pressure or pneumatic pressure generated by the compressor and hydraulic or pneumatic pressure generated by the compressor, and hydraulic or pneumatic actuators for moving the door in the open / Etc., are expensive and expensive to install and maintain. In particular, there is a lot of noise when the door is opened and closed. The wire or belt driven type requires a motor that generates power, a drive pulley that is rotationally driven by the power of the motor, a driven pulley disposed between the drive pulley and the door opening / closing interval, and a wire or belt wound between the drive pulley and the driven pulley , It is not easy to install and adjust, and it is frequently broken due to overload, etc., and it is difficult to control the opening / closing accurately because of low response characteristic.

On the other hand, the inventor of the present invention has proposed a feed screw driving method using a lead screw and a lead nut as driving means of a screen door opening / closing apparatus through Utility Model Registration No. 20-0426905. The feed screw driving method of the line registration design uses the motor as the driving source and uses the lead screw and the lead nut which convert the rotational motion of the motor shaft into the linear motion and the response speed of the screen door opening and closing control is fast and accurate, And convenience, and also provides an economical effect on the maintenance due to a small number of failures.

In recent years, there has been a tendency to use a feed screw driving method which is advantageous for many doors of electric trains, and there is an increasing demand for retrofitting a conventional electric train door by a feed screw driving method. The door for the electric train is controlled in the same manner in synchronization with the screen door of the platform, so that the device such as the line registration scheme as described above can be applied as it is.

However, in the case of retrofitting an old aged electric train door, since the space for installing the opening and closing drive mechanism such as the lead screw and the guide roller bracket is much narrower than that of the screen door, There is no problem.

Generally, in a feed screw driving method, a link device flexibly and flexibly responding to warping or fluctuation is essential because it may be mechanically restrained by bending of a feed screw or jiggling of a door, and opening and closing may not be smooth. The link device must also be of a structure capable of accommodating the flow in all directions except the opening and closing directions. However, the conventional link device occupies a lot of space as a refracting link, and in particular, a mounting width for accommodating the refracting posture is relatively large. Therefore, improvement of the refracting links is required in a conventional electric train in which the installation space, especially the space of the installation space, is narrow.

It is an object of the present invention to provide an improved sliding door link apparatus capable of minimizing the installation width of the entire apparatus so as to be suitable for an environment with a narrow installation space.

According to an aspect of the present invention, there is provided a sliding door link apparatus including a lead nut coupled to a lead screw that is driven to rotate and linearly moving along a rotation of the lead screw, A nut holder for connecting the door of the structure supported by the bracket to the lead nut, the nut holder being connected to and fixed to the lead nut and having a protruding portion extending vertically downward; And a pivoting means for pivotally supporting the link member with respect to the roller bracket so as to be pivotally moved in a line parallel to the opening and closing directions, Two pivot members for supporting the link member on both sides as pivoting means, Wherein one of the pivotal members has a bolt-shaped threaded portion and is movable in the opening and closing direction while receiving the linking member and allowing the pivotal member to move together while restricting the two pivotal members in a penetrating state, A pivot support block fixed to the roller bracket and supporting the two pivot members protruding through the link holder so as to pass through the pivot support block so as to be movable in the opening and closing direction, And an adjustable nut fastened to the threaded portion so as to adjust the horizontal position of the door relative to the lead nut position.

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Further, the sliding door link apparatus according to the present invention is characterized in that it has a structure in which a lead nut coupled to a lead screw that is driven to rotate and linearly moves along its rotation is provided, and a door is suspended from a roller bracket A nut holder for connecting the door of the nut holder to the lead nut, the nut holder having a projecting portion connected to the lead nut and moving together and extending vertically downward, And a pivoting means for pivotally supporting the link member with respect to the roller bracket in a line parallel to the opening and closing directions, wherein the lead nut is supported by the nut holder And has a hole for fastening the bolt element passing through the hole It may be provided as a configuration provided with a heli-coil yoke (heli coil) that can be mounted is elastically fastened to the bolt element.

The sliding door linking device according to the present invention is a structure for absorbing the flow between the driving means and the door on the vertical plane with respect to the center of the lead screw and can be installed within the same width as the door thickness .

Further, according to the sliding door link apparatus of the present invention, since the axis center of the lead screw of the driving means and the center of the orbit of the roller for guiding the movement of the sliding door can be arranged on the same vertical plane, Width can be minimized.

Therefore, the present invention provides an effect of improving the safety and performance of the existing aged electric train doors by introducing the feed screw driving method to the doors of the existing electric trains having a narrow installation space.

Meanwhile, the present invention can reduce the installation width of the opening and closing devices for sliding doors of screen doors of other platforms as well as electric trains, thereby enhancing the space utilization of each structure. In addition, the installation space is very narrow, It is also very useful for elevator doors where opening and closing control is particularly required.

Hereinafter, a sliding door supporting apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

It should be understood that the present invention is not limited to the embodiments described above, but may be applied to other types of buildings such as a screen door provided at the platform, It goes without saying that the present invention can be applied to sliding doors and door openers. It is to be understood that the drawings are only for the understanding of the present invention, and some elements may be exaggerated or omitted.

In Fig. 1, reference numerals 1a and 1b denote doors and doors. The doors 1a and 1b are two-pair sliding doors that open and close the doorway 2 on both sides. A reinforcing plate (3) is provided in the installation space above the entrance (2). The reinforcing plate 3 is a rigid structure and has a plurality of support portions 4 in the form of vertical bars formed at intervals. On the other hand, in the indoor side wall of the installation space, there is an inspection port 6, and the opening / closing device to which the present invention is applied is considered to be easily installed through the inspection port 6.

The opening and closing apparatus to which the present invention is applied includes two guide rails (10, 20). The guide rails 10 and 20 are fixed to the reinforcing plate 4 and the supporting portion 5 by bolting. The guide rails 10, 20 may be provided as a unitary aluminum continuous extrudate, for example, but may be easily inserted and installed through the above-described inspection port 3.

A motor 30 and a lead screw 40 are disposed as drive means for opening and closing the door in the guide rail 10 installed on the upper side. Both sides of the motor 30 are fixedly supported by the motor bracket 50 and the lead screw 40 is rotatably supported by fitting both ends and a center portion of the lead screw 40 into the bearing block 60. The motor bracket 50 and the bearing block 60 are easily aligned and fixed by using the grooves 11 formed in the guide rail 10 and can be used variously depending on their positions. The motor 30 is connected to an independent control panel (not shown) and operates in accordance with a control signal therefrom. The lead screw 40 is directly and rotationally driven by the shaft of the motor 30 via the shaft coupler 70. In the lead screw 40, two helical grooves 41a and 41b are formed symmetrically to correspond to each pair of doors, and two lead nuts 80a and 80b corresponding to the helical grooves 41a and 41b are coupled to each other. The lead nuts 80a and 80b linearly move in directions opposite to each other in accordance with the rotation of the lead screw 30 and move two pairs of the doors 1a and 1b of the doors 1a and 1b in the opening and closing directions .

The doors 1a and 1b are supported by being fastened to the brackets of the roller assemblies 100a and 100b and smoothly moved by guiding the roller assemblies 100a and 100b to the lower guide rail 20. Two pairs of the roller assemblies 100a and 100b are installed in each pair of the doors 1a and 1b and one of each pair is connected to the lead nuts 80a and 80b through the link assemblies 200a and 200b according to the present invention. (See FIG. 2).

The link assembly 200 according to the present invention includes a nut holder 210, a link member 220, a link holder 230, two pivot members 240 and 250, a pivot support block 260, An adjusting nut 270, a flat washer 280, and a spring washer 290.

The nut holder 210 is configured to receive the lead nut 80 and to be bolted on both sides thereof, and has a protruding portion 211 extending vertically downward.

The link member 220 has a recessed groove 221 for receiving the projection 211 of the nut holder 210 and a concave pivot hole 222 on both sides in the direction of the lead screw 40. Here, the recess 221 has a protruding portion 211 of the nut holder 210 accommodated therein, which is vertically movable in the vertical direction, and restrains the protruding portion 211 in a different direction such as a door opening / closing direction.

The link holder 230 is formed in a rectangular shape for housing the link member 220 and has a circular hole 231 penetrating both sides in the door opening and closing direction and a rectangular groove portion 232 extended around the circular hole 231 And a lid 233 fixed to each side by screws. The lid 233 is formed with a circular hole 234 and a rectangular groove 232 corresponding to each side surface of the link holder 230.

The two pivotal members 240 and 250 are formed of rectangular portions 241 and 251 and pivotal portions 242 and 252 on one side of the angled portions 241 and 251 and support portions 243 and 253 on the other side thereof. (243) is sufficiently long and formed of a thread portion such as a bolt. The angular portions 241 and 251 are accommodated in the angular groove portion 232 of the link holder 230 to constrain the rotation thereof and the pivot portions 242 and 252 are formed in the circular hole 231 of the link holder 230 And is inserted into the pivot hole 222 of the link member 220 described above to support the link member 220 so as to be rotatable and pivotable.

The pivot support block 260 has a support hole 261 for movably supporting the support portions 243 and 253 of the pivot members 240 and 250 and fixed to the bracket upper surface portion 110 of the roller assembly by bolts.

The adjustment nut 270 is for adjusting the length of the support portion 243 of the one pivotal member 240 with respect to the one pivotal support block 260 and the flat washer 280 and the spring washer 290 are provided with adjustment nuts 270 ) For the prevention of relaxation.

5, the lead nut 80 and the nut holder 210 are coupled with each other by bolts to move integrally, while the nut holder 210 and the link member 220 are integrally formed with the protrusion 211 in the vertical direction, And contracts and contracts with respect to each other in the vertical direction flow by the recessed portion 221 which is formed in the recessed portion. The link member 220 also can pivot about the center of the pivot member in parallel with the door opening / closing direction, so that it acts to absorb vibrations and shocks between the driving side and the door side in all directions except the door opening / closing direction. Therefore, the doors 1a and 1b can be smoothly opened and closed without being influenced by vibration or impact.

5, the lead nuts 80 are fastened with bolts (not shown) passing through the nut holder 210 on both sides. Preferably, bolt holes 81 for bolt fastening The coil 82 is mounted. The helical coil 82 is effective in preventing the loosening of the bolt despite the influence of impact or the like by elastically fastening and restraining the bolt. Particularly, since the lead nut 80 requires good lubrication with the lead screw 30, even if a self-lubricating material is used, it is possible to effectively prevent the loosening of the bolt due to the lubricant flowing from the material will be.

6, two pivot members 240 and 250 pivotally supporting the link member 220 on both sides in the door opening and closing direction are fixed to the link holder 230 by the angled portions 241 and 251, 100 can be moved in the door opening / closing direction by the support portions 243, 253 with respect to the pivot supporting block 260 fixed to the bracket 110. [ The link positions of the doors 1a and 1b relative to the lead nuts 80, that is, the positions of the doors 1a and 1b ) The horizontal position of each pair can be adjusted approximately within the allowable length range of the support portion 243. With this adjustment function, the initial position of the doors 1a and 1b can be adjusted so that no gap occurs when the doors 1a and 1b are closed.

Although the sliding doors of the double doors as the doors of the electric trains are exemplified in the above embodiment, the present invention can be applied to the doors of the sliding doors or doors of the doors, the door doors for the trains, It is also applicable to sliding doors.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic layout of an entire door opening and closing apparatus for an electric train to which the present invention is applied; FIG.

2 is a front view of the installation state of the sliding door link device according to the present invention.

3 is an exploded perspective view of the sliding door link device according to the present invention.

4 is a longitudinal sectional view of a sliding door link device according to the present invention.

5 is a cross-sectional view of a sliding door link device according to the present invention.

Description of the Related Art [0002]

1a, 1b: Door

40: Lead Screw

80; 80a, 80b: lead nuts

200: Link assembly

210: nut holder

220: Link member

230: Link holder

240, 250:

Claims (3)

delete And the door is connected to the lead nut in a structure in which a lead nut is coupled to the lead screw that is rotationally driven and linearly moves according to the rotation, and the door is suspended from a roller bracket attached with a roller guided by the guide rail A nut holder having a projecting portion of the nut holder which is connected to and fixed to the lead nut and has a protruding portion extending vertically downward and a protruding portion of the nut holder which is connected to the protruding portion of the nut holder so as to be able to expand and contract in a vertical direction, A link member, a pivoting means for supporting the link member with respect to the roller bracket so as to be rotatably pivoted on a line parallel to the opening and closing direction, The pivoting member includes two pivot members for supporting the link member on both sides thereof. One of the pivot members has a bolt-shaped threaded portion. The link member is received in the pivot member, A link holder fixed to the roller bracket and penetrating the two pivot members protruding through the link holder so as to be movable in an opening and closing direction, Wherein a pivot support block having a threaded portion and an adjustment nut secured to the threaded portion of the pivot support block supporting the pivot member are provided to adjust the horizontal position of the door relative to the position of the lead nut. Device. And the door is connected to the lead nut in a structure in which a lead nut is coupled to the lead screw that is rotationally driven and linearly moves according to the rotation, and the door is suspended from a roller bracket attached with a roller guided by the guide rail A nut holder having a projecting portion of the nut holder which is connected to and fixed to the lead nut and has a protruding portion extending vertically downward and a protruding portion of the nut holder which is connected to the protruding portion of the nut holder so as to be able to expand and contract in a vertical direction, A link member, a pivoting means for supporting the link member with respect to the roller bracket so as to be rotatably pivoted on a line parallel to the opening and closing direction, Characterized in that the lead nut has a hole for fastening a bolt element passing through the nut holder, and a helical coil mounted on the hole to elastically fasten the bolt element.

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