Elevator synchronous door vane self-locking and limiting device

Abstract

The utility model discloses an elevator synchronous door knife accessory, in particular to an elevator synchronous door knife self-locking and limiting device, which comprises a door knife locking plate hinged to a door knife, a door knife driving shaft driven by elastic force to abut against a concave part of the door knife locking plate so as to lock the door knife driving shaft under the condition that a blade of the door knife is kept closed; and the limiting assembly is fixed to the door machine, abuts against the door knife at the door closing position and synchronously drives the door knife locking plate to overcome the elastic force and rotate around the hinge shaft of the door knife locking plate to unlock the door knife driving shaft. The technical problem of improving the door opening and closing effect of the elevator is solved, the door knife driving shaft can be mechanically locked all the time in the door opening and closing process to keep the door knife blade closed, meanwhile, the perpendicularity of the door knife at the door closing position is guaranteed, and then the door opening and closing effect of the elevator is overall improved.

Description

Technical Field

[0001] The utility model relates to an elevator synchronous door knife accessory, in particular to an elevator synchronous door knife self-locking and limiting device. Background Art

[0002] The door closing limit device 10 of the traditional elevator synchronous door machine is usually arranged on the door hanging plate at the lower end of the door machine, such as Figure 1 When closing the door, after the door panel is fully closed by the door motor, the door motor still needs to drive the door blade to open, that is, the door motor will continue to apply force in the closing direction. If the door panel is light, due to the principle of leverage, the door panel may tilt after the door is fully closed, and the two door panels may form an "eight-shaped" shape. The gap between the door panels may be smaller at the top and larger at the bottom. This may also cause the door blade to tilt after the door is fully closed due to the lack of a mechanical limit point. At this time, the door blade may easily scrape the door ball when the elevator is running up and down, causing the elevator to stop suddenly.

[0003] In addition, traditional elevator synchronous door machines rely solely on the force of the door motor to keep the door blade closed and clamp the door ball. Factors such as the voltage and current stability of the door motor can cause abnormal door opening and closing curves.

[0004] Therefore, the applicant proposed the present utility model. Summary of the Invention

[0005] The purpose of the present utility model is to provide an elevator synchronous door knife self-locking and limiting device in order to solve the deficiencies of the above-mentioned prior art. The device can keep the door knife blade in a closed state by mechanically locking the door knife drive shaft at all times during the door opening and closing process, while ensuring the verticality of the door knife in the closed position, thereby improving the overall elevator door opening and closing effect.

[0006] In order to achieve the above purpose, the utility model is designed to provide an elevator synchronous door knife self-locking and limiting device, comprising:

[0007] A door knife lock plate hinged to the door knife drives the door knife drive shaft to abut against a recessed portion of the door knife lock plate through elastic force, thereby locking the door knife drive shaft while keeping the door knife blade closed;

[0008] In addition, a limit assembly fixed to the door machine presses against the door knife in the door closing position, and simultaneously drives the door knife lock plate to overcome the elastic force and rotate around its hinge axis to unlock the door knife drive shaft.

[0009] The present invention provides a synchronous door knife self-locking and limiting device for an elevator. The door knife lock plate in the device can always mechanically lock the door knife drive shaft to keep the door knife blade in a closed state during the door opening and closing process; in addition, the limiting component in the device and the original door closing limiting device can cooperate to maintain the verticality of the door knife after the door is in place, prevent the door knife from colliding with the door ball of the floor door when the elevator runs up and down, reduce the failure rate of the elevator, and also play the function of unlocking the door knife lock plate when the door is in place.

[0010] The above-mentioned elevator synchronous door knife self-locking and limiting device, the specific structure of the door knife lock plate in its structure is preferably selected as follows:

[0011] The door knife lock plate is approximately L-shaped, and includes a transverse portion, a longitudinal portion, and a transverse-to-longitudinal transition portion;

[0012] Among them, the hinge shaft is installed to the horizontal and vertical transition parts of the door knife lock plate, and the horizontal part of the door knife lock plate extends horizontally toward the door knife drive shaft, and passes through the bottom of the door knife drive shaft by forming a recessed part, and a torsion spring is sleeved on the hinge shaft. One torsion arm of the torsion spring passes through the through hole on the door knife bottom plate for limiting, and the other torsion arm abuts against the longitudinal part of the door knife lock plate, and by always driving the longitudinal part of the door knife lock plate to flip in the direction away from the door knife drive shaft, the recessed part of the door knife lock plate is kept always abutting against the door knife drive shaft.

[0013] In the structure of the above-mentioned elevator synchronous door knife self-locking and limiting device, the limiting component is preferably arranged at the upper end of the door machine.

[0014] Furthermore, the specific structure of the limit assembly is preferably selected as follows:

[0015] The limiting assembly includes a bracket, a buffer rubber bolt and a buffer rubber pad;

[0016] Among them, the buffer rubber bolt and the buffer rubber pad are fixed to the door machine through the bracket. When the door is closed, the door knife abuts against the buffer rubber pad on the bracket, and the rubber head of the buffer rubber bolt on the synchronous bracket abuts against the door knife lock plate, and drives the door knife lock plate to overcome the elastic force and rotate around its hinge axis. At the same time, the buffer rubber bolt can adjust the initial position of the rubber head relative to the bracket by rotation, so as to facilitate the adjustment of the time when the rubber head of the buffer rubber bolt contacts the door knife lock plate according to the adaptability of the door closing time, so as to ensure that the time of the two is consistent, thereby ensuring the synchronization of the door knife unlocking and the door closing time.

[0017] Compared with the prior art, the elevator synchronous door knife self-locking and limiting device obtained by the present invention has the following technical effects:

[0018] Ensure that the door knife blade is allowed to open only when the door is fully closed. During the door opening and closing process, the door knife blade is always closed to maintain the state of mechanically clamping the door ball to prevent abnormal door opening and closing curves of the door machine.

[0019] Ensure the verticality of the door knife after the door is fully closed, and prevent the door panel from tilting up and the door gap from becoming larger.

[0020] In summary, the utility model provides an elevator synchronous door knife self-locking and limiting device, which is applied to the elevator synchronous door machine system to effectively improve the elevator door opening and closing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a traditional elevator door machine;

[0022] Figure 2 This is a schematic diagram of the structure of the improved elevator door machine of the utility model;

[0023] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0024] Figure 4 This is the front side of the schematic diagram of the improved elevator door knife structure of the utility model;

[0025] Figure 5 This is the back side of the schematic diagram of the improved elevator door knife structure of the utility model;

[0026] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle;

[0027] Figure 7 This is a schematic diagram of the working state of the improved elevator door knife of the utility model when the door is fully closed;

[0028] Figure 8 The utility model is a schematic diagram of the working state of the improved elevator door knife during the door closing process.

[0029] In the picture:

[0030] Door knife 1, door knife lock plate 1-2, recessed portion 1-2-1, transverse portion 1-2-2, longitudinal portion 1-2-3, transverse-to-vertical transition portion 1-2-4, door knife drive shaft 1-3, door knife blade 1-4, door knife base plate 1-5, through hole 1-5-1, door machine 2, limit assembly 3, bracket 3-1, buffer rubber bolt 3-2, buffer rubber pad 3-3, hinge shaft 4, torsion spring 5;

[0031] Door closing limit device 10. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0033] like Figures 2 to 8 As shown in FIG. 1 , as an embodiment of the present utility model, an elevator synchronous door knife self-locking and limiting device provided in this embodiment includes:

[0034] The door knife lock plate 1-2 is hinged to the door knife 1, and the door knife drive shaft 1-3 is driven by elastic force to abut against the recessed portion 1-2-1 of the door knife lock plate 1-2, so as to lock the door knife drive shaft 1-3 while keeping the door knife blade 1-4 closed;

[0035] In addition, the limit component 3 fixed to the door machine 2 presses against the door knife 1 in the closed position, and simultaneously drives the door knife lock plate 1-2 to overcome the elastic force and rotate around its hinge shaft 4 to unlock the door knife drive shaft 1-3.

[0036] The specific structure of the door knife lock plate 1-2 in this embodiment is as follows: the door knife lock plate 1-2 is approximately L-shaped, and includes a transverse portion 1-2-2, a longitudinal portion 1-2-3 and a transverse and longitudinal transition portion 1-2-4; wherein the hinge shaft 4 is mounted to the transverse and longitudinal transition portion 1-2-4 of the door knife lock plate 1-2, and the transverse portion 1-2-2 of the door knife lock plate 1-2 extends horizontally toward the door knife drive shaft 1-3, and is formed from the door knife drive shaft 1-3 by forming a recessed portion 1-2-1. -3 passes below, and a torsion spring 5 is sleeved on the hinge shaft 4. One torsion arm of the torsion spring 5 passes through the through hole 1-5-1 on the door knife base plate 1-5 for limiting, and the other torsion arm thereof abuts against the longitudinal portion 1-2-3 of the door knife lock plate 1-2, and by always driving the longitudinal portion 1-2-3 of the door knife lock plate 1-2 to flip in the direction away from the door knife drive shaft 1-3, the recessed portion 1-2-1 of the door knife lock plate 1-2 is kept always abutting against the door knife drive shaft 1-3.

[0037] In this embodiment, the position limiting assembly 3 is arranged at the upper end of the door machine 2. The specific structure of the position limiting assembly 3 is as follows: the position limiting assembly 3 includes a bracket 3-1, a buffer rubber bolt 3-2 and a buffer rubber pad 3-3; wherein the buffer rubber bolt 3-2 and the buffer rubber pad 3-3 are fixed to the door machine 2 through the bracket 3-1. In the closed position, the door blade 1 abuts against the buffer rubber pad 3-3 on the bracket 3-1, and the rubber head of the buffer rubber bolt 3-2 on the synchronous bracket 3-1 abuts against the door blade lock plate 1-2, driving the door blade lock plate 1-2 to overcome the elastic force and rotate around its hinge axis 4. At the same time, the buffer rubber bolt 3-2 can adjust the initial position of the rubber head relative to the bracket 3-1 by rotating, thereby facilitating the adjustment of the time when the rubber head of the buffer rubber bolt 3-2 contacts the door blade lock plate 1-2 according to the adaptive closing time, so as to ensure that the two times are consistent, thereby ensuring that the door blade 1 is unlocked and closed synchronously.

[0038] The present invention provides a synchronous door knife self-locking and limiting device for an elevator. The door knife lock plate 1-2 in the device can always mechanically lock the door knife drive shaft 1-3 to keep the door knife blade 1-4 in a closed state during the door opening and closing process; in addition, the limiting component 3 in the device and the original door closing limit device 10 can cooperate to maintain the verticality of the door knife 1 after the door machine 2 is fully closed, prevent the door knife 1 from colliding with the floor door ball when the elevator runs up and down, reduce the failure rate of the elevator, and also play the function of unlocking the door knife lock plate 1-2 when the door is fully closed.

[0039] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. An elevator synchronous door knife self-locking and limiting device, characterized by include: A door knife lock plate hinged to the door knife drives the door knife drive shaft to abut against a recessed portion of the door knife lock plate through elastic force, thereby locking the door knife drive shaft while keeping the door knife blade closed; In addition, a limit assembly fixed to the door machine presses against the door knife in the door closing position, and simultaneously drives the door knife lock plate to overcome the elastic force and rotate around its hinge axis to unlock the door knife drive shaft.

2. The elevator synchronous door knife self-locking and limiting device according to claim 1 is characterized in that The specific structure of the door knife lock plate is: The door knife lock plate is approximately L-shaped, and includes a transverse portion, a longitudinal portion, and a transverse-to-longitudinal transition portion; Among them, the hinge shaft is installed to the horizontal and vertical transition parts of the door knife lock plate, and the horizontal part of the door knife lock plate extends horizontally toward the door knife drive shaft, and passes through the bottom of the door knife drive shaft by forming a recessed part, and a torsion spring is sleeved on the hinge shaft. One torsion arm of the torsion spring passes through the through hole on the door knife bottom plate for limiting, and the other torsion arm abuts against the longitudinal part of the door knife lock plate, and by always driving the longitudinal part of the door knife lock plate to flip in the direction away from the door knife drive shaft, the recessed part of the door knife lock plate is kept always abutting against the door knife drive shaft.

3. The elevator synchronous door knife self-locking and limiting device according to claim 1 is characterized in that The limiting assembly is arranged at the upper end of the door machine.

4. The elevator synchronous door knife self-locking and limiting device according to claim 3 is characterized in that The specific structure of the limit assembly is: The limiting assembly includes a bracket, a buffer rubber bolt and a buffer rubber pad; Among them, the buffer rubber bolt and the buffer rubber pad are fixed to the door machine through the bracket. When the door is closed, the door knife abuts against the buffer rubber pad on the bracket, and the rubber head of the buffer rubber bolt on the synchronous bracket abuts against the door knife lock plate, driving the door knife lock plate to overcome the elastic force and rotate around its hinge axis.

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