Device for supporting landing door

Abstract

The present invention aims to prevent the landing door from detaching even in the event of damage to the hanger roller. The protective guide of the landing door detachment prevention device of the present invention comprises a front plate extending downward from the front of the ceiling, two side plates extending downward from both sides of the ceiling, and an end extending downward from the rear of the ceiling and adjacent to the door rail. Furthermore, the hanger plate is inserted between the front plate and the two side plates, and a fastening bolt passes through while being screw-coupled with a fastening hole formed in the front plate. The end of the fastening bolt pushes the hanger plate so that the front edge of the side plate and the rear of the hanger plate are in close contact, thereby designing the lower end of the guide portion to be supported on the door rail in the event of damage to the hanger roller.

Description

Technology Field

[0001] The present invention relates to a landing door support device for an elevator, and more specifically, to a detachment prevention device capable of preventing the landing door from deviating from its proper position due to external force. Background Technology

[0002] Elevators move along a vertically installed shaft, and landing doors open and close this shaft and the landings on each floor. Since these landing doors essentially open and close the elevator shaft corresponding to the height of the building, they have significant implications for safety accidents. Generally, landing doors open and close based on power from the elevator car.

[0003] These landing doors are generally installed to open and close based on the rotation of hanger rollers guided by door rails. The movement of the landing door is guided by hanger rollers supported by hanger plates; typically, the outer portion of the hanger roller is formed with a synthetic resin material that contacts the door rail to ensure quiet operation. Consequently, there is a disadvantage that it can be easily damaged by external forces, such as thermal forces.

[0004] If the hanger roller is damaged, it will detach from the door rail, which ultimately results in the landing door deviating from its designated position. Since this is substantially related to safety, it is important to configure the system to prevent the landing door from deviating. The problem to be solved

[0005] The objective of the present invention is to provide a mechanical device capable of preventing the landing door from detaching even if the hanger roller is damaged by an external force. means of solving the problem

[0006] The elevator landing door support device of the present invention comprises a landing door, a hanger plate connected to the upper part of the landing door, a hanger roller supported on the upper part of the hanger plate, and a door pocket having a door rail supported by the hanger roller. Here, the protective guide has a front plate extending downward from the front of the ceiling, two side plates extending downward from both sides of the ceiling, and an end extending downward from the rear of the ceiling and adjacent to the door rail. The hanger plate is inserted between the front plate and the two side plates, and a fastening bolt passes through while being screw-coupled with a fastening hole formed in the front plate. The end of the fastening bolt pushes the hanger plate so that the front edge of the side plate and the rear of the hanger plate are in close contact, thereby designing the lower end of the guide portion to be supported on the door rail in the event of damage to the hanger roller.

[0007] And according to another embodiment of the present invention, it is preferable to mold the leading edge portions of both side portions of the protective guide to have a sawtooth shape. Effects of the invention

[0008] It can be seen that the present invention, configured as described above, is designed so that even if the hanger roller, which is relatively weak against external forces, is damaged by external forces such as heat or physical force, the guide portion of the protective guide is supported by being caught on the door rail. Therefore, it is expected that the landing door will be prevented from detaching even when the hanger roller is damaged, thereby providing a significant safety advantage. Brief explanation of the drawing

[0009] FIG. 1 is a perspective view of a door equipped with the anti-detachment device of the present invention. FIG. 2 is a cross-sectional view of a door equipped with the anti-detachment device of the present invention. FIG. 3 is an exemplary perspective view of the protection guide of the present invention. Specific details for implementing the invention

[0010] Next, we will examine the present invention in more detail based on the embodiments illustrated in the drawings.

[0011] As illustrated in FIGS. 1 and 2, the landing door (10) is connected to a hanger plate (12) having a pair of hanger rollers (30) provided at the top. The hanger rollers (30) installed on the hanger plate (12) are supported on a door rail (22) installed on the back of a door pocket (20) fixed to the building. The pair of landing doors (10) are installed to open or close in conjunction with each other via an interlocking rope (14).

[0012] And the protective guide (30) of the present invention can be said to substantially prevent the elevator door (10) from coming off. Referring to FIG. 3, the protective guide (30) includes a vertical guide section (32), a front plate (34) provided on the front, and a side plate (36). These are each formed to extend downward from the ceiling (31), and in particular, the guide section (32) extended downward from the rear is extended relatively further downward, thereby having a state close to the door rail (22) described above.

[0013] Looking at the surrounding configuration of this protection guide (30), a hanger plate (12) is inserted between the front plate (34) and the leading edge of the side plates (36) on both sides. A fastening bolt (B) is screwed into the fastening hole (34a) of the front plate (34) through a nut (N). When the fastening bolt (B) is tightened in one direction, the end of the fastening bolt (B) comes into close contact with the front of the hanger plate (12), and subsequently pushes the hanger plate (12) backward.

[0014] Due to the movement of the fastening bolt (B), the hanger plate (12) is in close contact with the leading edge of the side plates (36) on both sides. As shown in the embodiment illustrated here, if the leading edge of the side plate (36) is machined into a toothed shape, the toothed leading edge is in closer contact with the back surface of the hanger plate (12), and the frictional force or clamping force generated between them becomes greater. Due to this force, the protective guide (30) and the hanger plate (12) can substantially maintain a state of being fastened together.

[0015] Here, the nut (N) inserted in the middle of the fastening bolt (B) can have the function of enabling the hanger plate (12) and the protection guide (30) to maintain a fixed state by being fastened together. According to the above configuration, the hanger plate (12) and the protection guide (30) can maintain a state of being fastened together with a force greater than the set amount, based substantially on the fastening force of the fastening bolt (B). Furthermore, on the lower surface of the aforementioned door rail (22), a lower roller (21) supported on the front of the hanger plate (12) is installed so as to be capable of rolling motion in an adhesive state.

[0016] However, as previously described, the hanger roller (20) of the elevator uses at least some synthetic resin material for various reasons. Therefore, when external forces such as heat or physical force are applied, the weakest hanger roller (20) may be damaged. As previously described, if the hanger roller (20) is damaged in this way, a problem may occur in which the landing door detaches.

[0017] According to the present invention, even if the hanger roller (20) is damaged by external forces such as heat, the landing door (10) is supported by the hanger plate (12), and the hanger plate can be maintained in a state of being fastened to the protection guide (30) of the present invention. Here, it can be seen that even if a part of the hanger roller (20) is damaged, the guide portion (32) of the protection guide (30) remains on the door rail (22), so the problem of the landing door becoming detached can ultimately be prevented.

[0018] Here, since the guide portion (32) of the protection guide (30) is located directly above the door rail (22) in the initial state, if an outer part of the hanger roller (20) is damaged, the guide portion (32) descends slightly but soon becomes supported by being caught on the door rail (22). According to this structural relationship, it can be seen that the complete detachment of the landing door (10) can ultimately be prevented, and the risk caused by the detachment of the landing door can be sufficiently prevented.

[0019] It is obvious to those skilled in the art that various modifications are possible within the scope of the basic technical concept of the present invention as examined above. Furthermore, given the intent of the provisions of the Patent Act, it is obvious that the scope of protection of the present invention should be interpreted based on the description in the patent claims. Explanation of the symbols

[0020] 10 ..... platform door 12 ..... Hanger plate 14 ..... connecting rope 20 ..... Hanger roller 22 ..... door rail 24 ..... Platform door pocket 30 ..... Protection Guide 31 ..... ceiling 32 ..... Guide Department 34 ..... front panel 36 ..... side panel

Claims

Claim 1 An elevator landing door support device comprising: a landing door; a hanger plate connected to the upper part of the landing door; a hanger roller supported on the upper part of the hanger plate; a door pocket having a door rail supported by the hanger roller; and a protective guide having a front plate extending downward from the front of the ceiling, two side plates extending downward from both sides of the ceiling, and a guide portion extending downward from the rear of the ceiling and having an end portion close to the door rail; wherein the hanger plate is inserted between the front plate and the two side plates, and a fastening bolt penetrates by being screw-coupled with a fastening hole formed in the front plate, so that the end portion of the fastening bolt pushes the hanger plate to ensure that the front end of the side plate and the rear of the hanger plate are in close contact, so that in the event of damage to the hanger roller, the lower portion of the guide portion is supported on the door rail. Claim 2 In claim 1, the leading edge portions of both side portions have a sawtooth shape.

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