Safety touch panel mechanism for elevator door

Abstract

The present invention discloses a safety touch panel mechanism for an elevator door, comprising a first connecting rod group, a second connecting rod group, and a safety touch panel; the second connecting rod group comprises a mounting base, a connecting rod, a micro switch, and a folding bracket preset on a sill; a limit plate arranged toward the sill is arranged at the lower end of the connecting rod, and a pressure plate for pressing against a switch on the micro switch is arranged on the limit plate; the folding bracket comprises a driving rod and a pressing plate. The present invention has the following advantages and effects: by arranging the safety touch panel at the rear end face of any one of the elevator cars, the safety touch panel can be always in a detection state, and at the same time, by arranging the folding bracket, the safety touch panel can be automatically lifted to meet the door spacing after the elevator door is opened, and by installing the safety touch panel on one side, the difficulty of installation and debugging is greatly simplified and reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator equipment, and in particular to a safety touch panel mechanism for an elevator door. Background Art

[0002] With the development of my country's economy and society, high-rise buildings continue to emerge, and elevators have gradually become popular and developed. While elevators bring convenience to users, their safety and reliability are also gradually being valued. The elevator door system plays an important role in elevator safety protection. Among them, the protection of car door pinching is generally achieved by providing a reverse door opening operation signal to the door machine control after the light curtain detects obstacles between the doors. However, when the light curtain is damaged or fails under working conditions such as fire and smoke, it is still impossible to avoid the pinching of people.

[0003] For example Figure 6 As shown in the elevator door structure diagram, the safety touch plate is retracted or protruded on the car door through a more complex linkage mechanism. When this type of elevator is in full swing, the linkage mechanism will drive the safety touch plate to automatically rise to avoid collision between the two safety touch plates. As a result, there is no safety touch plate in the last 20 mm of the elevator door when it is closed, making it impossible for the safety touch plate to detect objects such as electric drill bits and transparent glass, which will cause some unnecessary losses. Summary of the invention

[0004] The purpose of the present invention is to provide a safety touch plate mechanism for an elevator door, which has the effect of always being able to detect before the door is fully closed.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A safety touch plate mechanism for an elevator door, comprising a first connecting rod group located at an upper end, a second connecting rod group located at a lower end, and a safety touch plate connected to the first connecting rod group and the second connecting rod group and protruding from the outer side of the car door;

[0006] The second connecting rod assembly includes a mounting base for mounting on the rear end surface of the car door, a connecting rod with one end rotatably connected to the safety touch plate and the other end rotatably connected to the mounting base, a micro switch arranged at the lower end of the mounting base, and a folding bracket preset on the sill;

[0007] The lower end of the connecting rod is provided with a limit plate arranged toward the sill, and the limit plate is provided with a pressure plate for pressing against the switch on the micro switch;

[0008] The folding bracket includes a driving rod for pushing the pressure plate on the limit plate away from the micro switch, and a switch pressing plate located at the upper end of the driving rod and capable of pressing against the micro switch when the driving rod pushes the pressure plate away from the micro switch.

[0009] By adopting the above technical solution, the safety touch panel is fixed to the rear end face of the car door through the first connecting rod group and the second connecting rod group, and no parts are set on the corresponding other car door. When the two car doors are close to each other, the safety touch panel can penetrate into the rear end face of the other car door. When the elevator door is in place, compared with the problem of gap in the prior art, the touch panel is always in the detection state, and can detect thinner foreign objects such as electric drills and transparent glass by mechanical means, thereby improving the overall elevator safety environment.

[0010] A limit plate is set at the lower end of the connecting rod in the second connecting rod group at the lower end of the safety touch plate. Since the safety touch plate is always in a free hanging state, the pressure plate on the limit plate can use a switch pressed on the micro switch. When the safety touch plate rises due to the touch of an external object, the micro switch is turned on and the model is output to the elevator, and the elevator starts to pause or reverse the door opening, etc. On the other hand, since there is a clear standard for the door opening distance between elevators, in order to automatically retract the safety touch plate after the door is opened, a folding bracket is preset on the sill, and a driving rod and a clamping plate are set on the folding bracket.

[0011] When the car door opens to the right position, the driving rod can drive the limit plate to rotate, and the safety touch plate is automatically lifted. At the same time, when the pressure plate on the limit plate is about to leave the micro switch, the pressing plate can replace the pressure plate to continue to press the switch of the micro switch, ensuring that the micro switch is always in the closed state to avoid the micro switch being triggered and causing other movements of the car door; when the car door starts to close, the micro switch is away from the folding bracket, and the safety touch plate will automatically fall due to gravity to continue to press the pressure plate on the limit plate to press the switch of the micro switch. Compared with the existing technology, the overall structure is simple and easy to install, and can meet the requirements of continuous detection and door spacing at the same time, with high practicality and promotion value.

[0012] The present invention is further configured as follows: the first connecting rod group includes a mounting base plate for mounting on the rear end surface of the car door, a linkage rod with one end rotatably connected to the safety touch plate and the other end rotatably connected to the mounting base.

[0013] By adopting the above technical solution, the first connecting rod group is used to position the other end of the safety touch plate, and the safety touch plate is fixed to the rear end surface of the car door through the linkage rod and the connecting rod, while the safety touch plate can be raised and lowered relative to the car door.

[0014] The present invention is further configured as follows: the first connecting rod group and the second connecting rod group are both provided with fixing plates, and each set of the fixing plates includes a limiting buffer rod at the upper end and a positioning buffer rod at the lower end;

[0015] The two groups of limit buffer rods are respectively in contact with the outer side walls of the upper ends of the connecting rod and the linkage rod;

[0016] The two groups of positioning buffer rods are respectively in contact with the lower end outer side walls of the rotation locations of the connecting rod and the linkage rod.

[0017] By adopting the above technical solution, the limit buffer rod on the upper end of the fixed plate can not only reach the highest height of the safety touch plate, but also buffer the rotation of the linkage rod and the connecting rod when the safety touch plate is touched or the door is fully opened, so as to avoid loud noise or collision damage. The positioning buffer rod can reach the lowest height of the safety touch plate and buffer the safety touch plate when it falls, so as to avoid loud noise or collision damage.

[0018] The present invention is further configured as follows: the front ends of the position-limiting buffer rod and the positioning buffer rod are both provided with rubber buffer blocks.

[0019] By adopting the above technical solution, the rubber buffer block plays a buffering role, and the single setting is convenient for replacement after long-term use in the later stage. On the other hand, it also avoids direct collision between the connecting rod and the linkage rod and the limit buffer rod and the positioning buffer rod.

[0020] The present invention is further configured as follows: the limit plate is L-shaped, with one end positioned on the lower end surface of the connecting rod and the other end extending toward the sill; the pressure plate is fixed on the end surface of the extension section of the limit plate and bent toward the micro switch.

[0021] By adopting the above technical solution, a limit plate is fixed at the lower end of the inclined connecting rod, so that the limit plate is inclined in the direction close to the micro switch, which makes it easier for the driving rod on the sill to rotate the inclined limit plate and then lift the safety touch plate. On the other hand, the pressure plate arranged on the limit plate can be arranged toward the micro switch for the front end of the abutting plate to abut.

[0022] The present invention is further configured as follows: the folding bracket is provided with a mounting bracket fixed to the sill; the driving rod is horizontally arranged on the mounting bracket and the front end can abut against the end surface of the limiting plate; the clamping plate includes a horizontally arranged top plate and a mounting plate connected to the mounting bracket, and the front end of the top plate can abut against the switch surface of the micro switch.

[0023] By adopting the above technical solution, the driving rod is horizontally arranged on the mounting bracket, and the height can be not less than the minimum height of the limit plate, so that when the limit plate approaches the driving rod, the driving rod can force the limit plate to rotate. On the other hand, the top plate is basically arranged parallel to the switch of the micro switch, so that when the micro switch approaches the top plate, the top plate can continuously keep the micro switch in a closed state.

[0024] The present invention is further configured as follows: the mounting bracket is provided with a limiting hole for the drive rod to be inserted, a buffer elastic member abutting against the drive rod is further provided in the limiting hole, and a rubber pad is further provided at the front end of the drive rod.

[0025] By adopting the above technical solution, the drive rod can play a buffering role on the mounting bracket when the drive rod is compressed by the buffer elastic member and the limit hole, and the drive rod can automatically reset when the limit plate is separated from the drive rod. On the other hand, the rubber pad at the front of the drive rod can also play a secondary buffering role, and avoid hard contact between the limit plate and the drive rod, thereby avoiding noise and damage.

[0026] The present invention is further configured as follows: the mounting bracket is provided with mounting bolts for fixing the mounting plate, and the mounting plate is provided with waist-shaped fixing holes for the mounting bolts to pass through.

[0027] By adopting the above technical solution, the mounting plate is fixedly connected to the mounting bracket through the waist-shaped fixing hole. At the same time, the position of the mounting plate on the mounting bracket can be fine-tuned through the waist-shaped fixing hole to ensure the accuracy of the installation and reduce the installation difficulty of the entire safety touch plate structure.

[0028] The present invention is further configured as follows: both the mounting base and the mounting bottom plate are provided with mounting fixing holes, and the mounting fixing holes are waist-shaped holes.

[0029] By adopting the above technical solution, the mounting base and the mounting base plate are also fixed to the car door through the mounting fixing holes. At the same time, the mounting position can be adjusted through the waist-shaped hole setting, thereby facilitating the adjustment of the overall structural installation accuracy requirements.

[0030] The present invention is further configured as follows: the pressure plate is provided with an adjusting bolt arranged toward the micro switch.

[0031] By adopting the above technical solution, the trigger distance between the pressure plate and the micro switch can be adjusted after adding the adjusting bolt. On the one hand, when the pressure plate is bent at a certain angle after long-term use, the safe trigger distance changes and can be quickly adjusted manually. On the other hand, according to actual safety needs, it can be manually adjusted at the initial stage of installation to improve the safety of the elevator when in use.

[0032] In summary, the present invention has the following beneficial effects: by setting the safety touch plate on the rear end face of any one of the elevator cars, the safety touch plate can always be in a detection state, and at the same time, by setting a retractable bracket, it is ensured that the safety touch plate can be automatically lifted to meet the door spacing after the elevator door is fully opened. By installing the safety touch plate on one side, the difficulty of installation and debugging is greatly simplified and reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a safety touch plate mechanism installed on the car door, which is in the state of fully opening the door;

[0034] Figure 2 It is the positional relationship between the second connecting rod group and the safety touch plate, which is in the state of opening and closing the door;

[0035] Figure 3 is a schematic diagram of the structure of the folded bracket;

[0036] Figure 4 is a cross-sectional view of the stent being collapsed;

[0037] Figure 5 is the positional relationship between the second connecting rod assembly and the safety touch plate, in which the safety touch plate is touched and lifted;

[0038] Figure 6 It is a structural schematic diagram of an elevator door in the prior art.

[0039] In the figure: 1. first connecting rod group; 2. second connecting rod group; 3. safety touch plate; 4. mounting base; 5. connecting rod; 6. micro switch; 7. folding bracket; 8. limit plate; 9. pressure plate; 10. driving rod; 11. clamping plate; 12. mounting base plate; 13. linkage rod; 14. fixing plate; 15. limit buffer rod; 16. positioning buffer rod; 17. rubber buffer block; 18. mounting bracket; 19. top plate; 20. mounting plate; 21. buffer elastic member; 22. rubber pad; 23. mounting bolt; 24. waist-shaped fixing hole; 25. mounting fixing hole; 26. fixed shaft; 27. limit hole. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0041] A safety touch plate mechanism for elevator doors, referring to Figure 1 , including a first link group 1 and a second link group 2 for fixing on the car door, a safety touch plate 3 connected to the front end of the first link group 1 and the second link group 2, and a folding bracket 7 that can fold the safety touch plate 3 after the second link group 2 opens the car door. The safety touch plate 3 mechanism is only provided with one group on the two car doors, and the purpose of real-time detection of the safety touch plate can be achieved on either side.

[0042] Figure 1In the embodiment, the first connecting rod assembly 1 includes a mounting base plate 12, on which two mounting fixing holes 25 are provided, and the mounting fixing holes 25 are waist-shaped holes. The mounting base plate 12 can be fixed to the rear end surface of the car door by bolts. It also includes a linkage rod 13 rotatably connected to the mounting base plate 12, the lower end of the linkage rod 13 is fixed to the mounting base plate 12 by a fixed shaft 26 with a bearing, and the upper end is rotatably connected to one side of the safety touch plate 3 by rotation.

[0043] On the other hand, continue to refer to Figure 1 A vertical fixing plate 14 is welded on the upper right side of the mounting base plate 12, and a limiting buffer rod 15 is arranged at the upper end of the fixing plate 14 and a positioning buffer rod 16 is arranged at the lower end. The limiting buffer rod 15 is basically kept horizontally arranged, and is used to limit and block the rotating linkage rod 13 to prevent the linkage rod 13 from excessive rotation due to the collision of foreign objects with the safety touch plate 3. The positioning buffer rod 16 is inclined toward the linkage rod 13 below the rotation axis. When the safety touch plate 3 is not affected by external forces, it is always in abutment state, which can limit the height of the safety touch plate 3 due to the drooping of gravity and play a height limiting role. The front ends of the limiting buffer rod 15 and the positioning buffer rod 16 are also connected to a rubber buffer block 17 made of rubber. The connection method of the rubber buffer block 17 can be universal glue bonding, or bolt connection and fixing, so as to reduce the noise when the limiting buffer rod 15 and the positioning buffer rod 16 collide with the linkage rod 13.

[0044] Reference Figure 1 and Figure 2 The second connecting rod group 2 includes a mounting base 4, and the upper and lower ends of the mounting base 4 are also provided with mounting fixing holes 25, which are waist-shaped holes, and the fixing method is the same as the rotation method of the mounting base 12 and the positions are relatively corresponding. A connecting rod 5 is installed on the mounting base 4, and the middle and lower ends of the linkage are also connected to the mounting base 4 through a fixed shaft 26 with a bearing. On the other hand, an upright fixing plate 14 is also provided on the upper right side of the mounting base 4, and the structure and function are the same as those of the fixing plate 14 provided on the mounting base 12, so it will not be described in detail.

[0045] Reference Figure 2 A micro switch 6 is fixed to the lower right end of the mounting base 4. The switch of the micro switch 6 is set toward the sill, and the line is connected to the overall elevator system. An L-shaped limit plate 8 is welded to the lower end of the connecting rod 5. One end of the limit plate 8 is fixed to the lower end surface of the connecting rod 5, and the other end extends obliquely toward the sill and the direction of the micro switch 6. A pressure plate 9 is also set on the end surface of the connecting rod 5 facing the micro switch 6. One end of the pressure plate 9 is welded to the connecting rod 5, and the other end is bent toward the switch of the micro switch 6. At the same time, an adjustment bolt 9-1 set toward the micro switch 6 is set on the pressure plate 9 (refer to Figure 5). When the safety touch plate 3 is in a free hanging state, the pressing plate 9 can press the switch of the micro switch 6 to keep the micro switch 6 in the closed state. After adding the adjusting bolt 9-1, the trigger distance between the pressing plate 9 and the micro switch 6 can be adjusted. On the one hand, when the pressing plate 9 is bent at a certain angle after long-term use, the safety trigger distance changes, and it can be adjusted quickly manually; on the other hand, according to actual safety requirements, it can be adjusted manually in the initial installation to improve the safety of the elevator when in use.

[0046] Reference Figure 3 and Figure 4 The folding bracket 7 in the second connecting rod group 2 includes a mounting bracket 18 fixed on the sill. The mounting bracket 18 is L-shaped, with the vertical section fixed on the sill, and a driving rod 10 is connected to the front end of the horizontal section, and a tightening plate 11 is provided on the upper surface. A limiting hole 27 is also provided on the mounting bracket 18, and a spring as a buffer elastic member 21 is filled in the limiting hole 27. After the driving rod 10 is inserted into the limiting hole 27, it abuts against the buffer elastic member 21. The limiting hole 27 on the mounting bracket 18 is through-shaped and countersunk. The structure of the driving rod 10 is preferably a stepped shaft. During installation, the driving rod 10 can be inserted from the end of the mounting bracket 18, and then the buffer elastic member 21 is filled, and finally the end of the mounting bracket 18 is sealed with a screw.

[0047] At the same time, a rubber pad 22 (see Figure 3 The height of the driving rod 10 is not lower than the lowest height of the limit plate 8, that is, after the safety touch plate 3 rises to the highest point, the lowest point of the limit plate 8, to ensure that when the car door moves to the folding bracket 7, the driving rod 10 can position the limit plate 8, thereby forcing the link rod 5 on the limit plate 8 to rotate, and then lift the safety touch plate 3 to hide it on the rear end surface of the car door.

[0048] Reference Figure 2 and Figure 3The clamping plate 11 includes a horizontally arranged top plate 19 and a mounting plate 20 connected to the mounting bracket 18. One end of the top plate 19 is bent integrally with the mounting plate 20, and the height of the positioning rod is kept at the same height as the switch of the micro switch 6. At the same time, the position of the top plate 19 and the driving rod 10, and the position of the limit plate 8 and the pressure plate 9 match. When the driving rod 10 pushes the limit plate 8 open, the pressure plate 9 will separate from the micro switch 6. At this time, the position of the top plate 19 can replace the area where the pressure plate 9 releases the micro switch 6, so that the top plate 19 can press the micro switch 6 and ensure that the micro switch 6 is in a closed state. Two waist-shaped fixing holes 24 are arranged at the lower end of the mounting plate 20, so that when the mounting plate 20 is connected to the mounting bracket 18, the mounting plate 20 can be fixed by the mounting bolts 23 on the mounting bracket 18. At the same time, the setting of the waist-shaped fixing holes 24 can adjust the relative position of the top plate 19 and the driving rod 10, thereby meeting the positioning requirements.

[0049] Status 1 (refer to Figure 2 ), the car door is in the open or closed state, at this time the safety touch plate 3 is not touched, so the safety touch plate 3 is in a vertical falling state, and the pressure plate 9 on the connecting rod 5 closes the micro switch 6; State 2 (refer to Figure 5 ), the car door is in the open or closed state, the safety touch plate 3 is touched by a foreign object, and after the safety touch plate 3 is lifted, the pressure plate 9 on the connecting rod 5 separates the switch of the micro switch 6, and the micro switch 6 separates, generates an output signal, and the elevator stops moving; State three (refer to Figure 1 ), after the car door opens to the right position, the limit plate 8 on the connecting rod 5 is pushed open by the driving rod 10, and the pressure plate 9 is separated from the microswitch 6. At this time, the top plate 19 on the clamping plate 11 closes the microswitch 6, and the microswitch 6 does not generate a signal. Finally, the safety touch plate 3 is hidden.

[0050] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A safety touch panel mechanism for an elevator door, characterized in that: It comprises a first connecting rod group (1) located at the upper end, a second connecting rod group (2) located at the lower end, and a safety touch plate (3) connected to the first connecting rod group (1) and the second connecting rod group (2) and protruding from the outer side of the car door; The second connecting rod assembly (2) comprises a mounting base (4) for mounting on the rear end surface of the car door, a connecting rod (5) with one end rotatably connected to the safety touch plate (3) and the other end rotatably connected to the mounting base (4), a micro switch (6) arranged at the lower end of the mounting base (4), and a folding bracket (7) preset on the sill; The lower end of the connecting rod (5) is provided with a limit plate (8) arranged toward the sill, and the limit plate (8) is provided with a pressure plate (9) for pressing against the switch on the micro switch (6); The folding bracket (7) comprises a driving rod (10) for pushing the pressure plate (9) on the limiting plate (8) away from the micro switch (6), and a switch pressing plate (11) located at the upper end of the driving rod (10) and capable of pressing against the micro switch (6) when the driving rod (10) pushes the pressure plate (9) away from the micro switch (6); The first connecting rod assembly (1) comprises a mounting base plate (12) for mounting on the rear end surface of the car door, and a linkage rod (13) having one end rotatably connected to the safety touch plate (3) and the other end rotatably connected to the mounting base plate (12); The first connecting rod group (1) and the second connecting rod group (2) are both provided with a fixing plate (14), and each set of the fixing plates (14) comprises a limiting buffer rod (15) located at the upper end and a positioning buffer rod (16) located at the lower end; The two groups of limit buffer rods (15) are respectively in contact with the outer side walls of the upper ends of the connecting rod (5) and the linkage rod (13); The two groups of positioning buffer rods (16) are respectively in contact with the lower end outer side walls of the rotation points of the connecting rod (5) and the linkage rod (13); The installation base (4) and the installation base plate (12) are both provided with installation fixing holes (25), and the installation fixing holes (25) are waist-shaped holes.

2. The safety touch panel mechanism of an elevator door according to claim 1, characterized in that: The front ends of the limiting buffer rod (15) and the positioning buffer rod (16) are both provided with rubber buffer blocks (17).

3. A safety touch plate mechanism for an elevator door according to claim 1 or 2, characterized in that: The limit plate (8) is arranged in an L shape, with one end positioned on the lower end surface of the connecting rod (5) and the other end extending toward the sill; the pressure plate (9) is fixed on the end surface of the extended section of the limit plate (8) and bent toward the micro switch (6).

4. The safety touch panel mechanism of an elevator door according to claim 3, characterized in that: The folding bracket (7) is provided with a mounting bracket (18) fixed to the sill; the driving rod (10) is horizontally arranged on the mounting bracket (18) and the front end of the driving rod (10) can abut against the end surface of the limit plate (8); the abutting plate (11) includes a horizontally arranged top plate (19) and a mounting plate (20) connected to the mounting bracket (18), and the front end of the top plate (19) can abut against the switch surface of the micro switch (6).

5. The safety touch panel mechanism of an elevator door according to claim 4, characterized in that: The mounting bracket (18) is provided with a limiting hole (27) for the drive rod (10) to be inserted, and a buffer elastic member (21) abutting against the drive rod (10) is also provided in the limiting hole (27), and a rubber pad (22) is also provided at the front end of the drive rod (10).

6. The safety touch panel mechanism of an elevator door according to claim 5, characterized in that: The mounting bracket (18) is provided with a mounting bolt (23) for fixing the mounting plate (20), and the mounting plate (20) is provided with a waist-shaped fixing hole (24) for the mounting bolt (23) to pass through.

7. The safety touch panel mechanism of an elevator door according to claim 3, characterized in that: The pressure plate (9) is provided with an adjusting bolt (9-1) arranged toward the micro switch (6).

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