Elevator safety protection mechanism and elevator

Abstract

The invention discloses an elevator safety protection mechanism and an elevator. Comprising a door machine plate, a hanging plate, a door closing microswitch, a door opening microswitch, a door closing trigger bracket, a door opening trigger bracket, a pair of light curtain touch plates, a light curtain touch plate swing arm and a light curtain touch plate microswitch, wherein the door closing microswitch and the door opening microswitch are arranged on one of the door machine plate and the hanging plate; the door closing trigger bracket and the door opening trigger bracket are arranged on the other one of the door machine plate and the hanging plate; wherein one light curtain touch panel is internally provided with an infrared emitter, and the other light curtain touch panel is internally provided with an infrared receiver. Whether the door closing trigger bracket triggers the door closing microswitch to form a door closing in-place signal or not and whether the door opening trigger bracket triggers the door opening microswitch to form a door opening in-place signal or not are judged; whether the light curtain touch panel drives the light curtain touch panel swing arm to trigger the light curtain touch panel microswitch to form a light curtain touch panel detection signal or not and whether the infrared receiver completely receives light beams emitted by the infrared emitter or not to form a light curtain detection signal or not are used for controlling normal operation or door opening operation of the elevator door.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to an elevator safety protection mechanism and an elevator. Background Art

[0002] Elevators are an indispensable tool in modern life. During the process of opening and closing the elevator doors, it is necessary to monitor in real time whether there are objects entering or leaving the elevator car to prevent people or objects from being trapped in the elevator.

[0003] Chinese utility model patent CN213112144U discloses a safety touch plate mechanism for elevator doors, which is provided with a safety touch plate, a connecting rod arranged on the safety touch plate, a micro switch and a folding bracket; when the car door is in the state of opening or closing, the safety touch plate is in a vertical falling state, and the pressure plate on the connecting rod closes the micro switch to ensure that the elevator door is in a normal operating state; after the car door is opened to the full position, the limit plate on the connecting rod is pushed open by the driving rod on the folding bracket, the pressure plate is separated from the micro switch, and the micro switch is closed by the top plate on the folding bracket to ensure that the elevator door is in a normal operating state; when the car door is in the state of opening or closing, the safety touch plate is touched by a foreign object, and after the safety touch plate is lifted, the pressure plate on the connecting rod cannot trigger the micro switch, so that the elevator door enters the door opening operation state to prevent people or objects from being clamped. This patent sends a microswitch closing signal to the elevator inverter during the operation of the elevator door and after the door is fully opened to enable the elevator door to execute a normal operation state. When the safety touch plate is touched by an object during the operation of the elevator door, a microswitch separation signal is sent to the elevator inverter to enable the elevator door to execute an open door operation state to prevent people or objects from being pinched. However, it uses a complex connecting rod structure and a retractable bracket structure to trigger the closure or separation of the microswitch. Its structure is complex and the cost is high, and this solution is not suitable for elevators with narrow floor sills.

[0004] Therefore, there is an urgent need for an elevator safety protection mechanism and an elevator to solve the above technical problems. Summary of the invention

[0005] The main purpose of the present invention is to propose an elevator safety protection mechanism and an elevator, aiming to solve the technical problems in the existing technical solutions that the elevator safety protection mechanism has a complex structure, high cost, and is not suitable for narrow sill elevators.

[0006] To achieve the above object, the present invention proposes an elevator safety protection mechanism, comprising a door machine plate and two hanging plates slidably mounted on the door machine plate, the hanging plates are used to drive two car door plates to open or close, the two car door plates are respectively mounted with light curtain touch plates, one of the light curtain touch plates is mounted with an infrared transmitter, and the other light curtain touch plate is mounted with an infrared receiver, the infrared receiver forms a light curtain normal detection signal when completely receiving the light beam emitted by the infrared transmitter, otherwise forms a light curtain abnormal detection signal;

[0007] The elevator safety protection mechanism also includes a door closing microswitch and a door opening microswitch arranged on one of the door machine plate or the hanging plate, a door closing trigger bracket and a door opening trigger bracket arranged on the other, a light curtain touch panel swing arm and a light curtain touch panel microswitch arranged on the car door panel;

[0008] When the elevator car door panel is in full closing position, the door closing trigger bracket triggers the door closing micro switch to form a door closing position signal; when the elevator car door panel is in full opening position, the door opening trigger bracket triggers the door opening micro switch to form a door opening position signal; during the operation of the elevator car door panel, the light curtain touch panel drives the light curtain touch panel swing arm to trigger the light curtain touch panel micro switch to form a light curtain touch panel normal detection signal, and when an object touches the light curtain touch panel, the light curtain touch panel drives the light curtain touch panel swing arm to separate from the light curtain touch panel micro switch to form a light curtain touch panel abnormal detection signal;

[0009] The elevator inverter determines whether the elevator door is in normal operation or door opening state according to the normal detection signal of the light curtain, the abnormal detection signal of the light curtain, the door closing position signal, the door opening position signal, the normal detection signal of the light curtain touch panel and the abnormal detection signal of the light curtain touch panel.

[0010] In one embodiment of the present invention, the light curtain touch panel is in a retracted state when the car door panel is fully closed or fully opened, and is in a vertically falling state during the operation of the car door panel;

[0011] When the elevator car door panel is fully closed, the elevator frequency converter instructs the elevator car door to operate normally according to the received fully closed door signal and the normal detection signal of the light curtain;

[0012] When the elevator car door panel is fully opened, the elevator inverter instructs the elevator car door to operate normally according to the received door-opening-fully-opening signal and the normal light curtain detection signal. At this time, when an object enters or exits the car, the elevator inverter extends the door-opening-fully-opening time of the elevator car door panel according to the received light curtain abnormal detection signal;

[0013] During the operation of the elevator car door panel, the elevator inverter instructs the elevator car door to operate normally according to the received light curtain touch panel normal detection signal and the light curtain normal detection signal; when an object enters or exits the car or touches the light curtain touch panel, the infrared receiver fails to completely receive the light beam emitted by the infrared transmitter and forms a light curtain abnormal detection signal, or the light curtain touch panel is pushed by the object from a vertical falling state to a retracted state and drives the light curtain touch panel swing arm to separate from the light curtain touch panel microswitch to form a light curtain touch panel abnormal detection signal, and the elevator inverter instructs the elevator car door to open according to the received light curtain abnormal detection signal or the light curtain touch panel abnormal detection signal.

[0014] In one embodiment of the present invention, the door closing microswitch and the door opening microswitch are arranged on the board surface of the door machine board facing the elevator floor door, and the door closing trigger bracket and the door opening trigger bracket are arranged on the board surface of the hanging plate facing the elevator floor door. When the hanging plate drives the car door panel to close the door and move to the door closing position, the door closing trigger bracket moving with the hanging plate contacts the door closing microswitch and forms a door closing position signal. When the hanging plate drives the car door panel to open the door and move to the door opening position, the door opening trigger bracket moving with the hanging plate contacts the door opening microswitch and forms a door opening position signal.

[0015] In one embodiment of the present invention, a door closing auxiliary bracket extending out of the bottom surface of the door machine plate is arranged on the plate surface of the door machine plate on the side facing away from the elevator floor door, and the part of the door closing auxiliary bracket extending out of the door machine plate is formed with an inclined plate portion, and the light curtain touch panel is arranged on the car door panel on the side facing the elevator floor door, and the top of the light curtain touch panel extends upward from the top surface of the car door panel and extends to the back side of the car door panel and then extends downward to form a roller bracket, and a roller is installed on the roller bracket, and when the car door panel is closed in place, the roller moves to the inclined surface of the inclined plate portion to drive the light curtain touch panel to move upward and retract.

[0016] In one embodiment of the present invention, a door opening auxiliary bracket extending from the bottom surface of the door machine plate is also provided on the plate surface of the door machine plate on the side facing away from the elevator floor door, a roller channel is provided at the bottom of the door opening auxiliary bracket, and an inclined extending lifting portion is provided on the roller channel. When the car door plate is opened into place, the roller on the roller bracket moves to the lifting portion and rolls upward along the lifting portion to drive the light curtain touch plate to move upward and retract.

[0017] In one embodiment of the present invention, the light curtain touch panel swing arm is installed on the car door panel through a rotating bearing, and the light curtain touch panel is installed on the light curtain touch panel swing arm through a rotating bearing. When the light curtain touch panel is in a vertical falling state under the action of its own gravity, the light curtain touch panel protrudes from the side of the car door panel and is located in the space of the elevator passenger up and down passage. When the light curtain touch panel is in a retracted state, the light curtain touch panel is lifted and retracted to the side of the car door panel facing the elevator floor door without protruding from the side of the car door panel.

[0018] In one embodiment of the present invention, a swing arm touch plate is provided at the bottom of the light curtain touch plate swing arm. When the light curtain touch plate falls vertically, it drives the light curtain touch plate swing arm to rotate downward, and the swing arm touch plate rotates and contacts the light curtain touch plate micro switch; when the light curtain touch plate is retracted, it drives the light curtain touch plate swing arm to rotate upward, and the swing arm touch plate rotates and disengages from the light curtain touch plate micro switch.

[0019] In one embodiment of the present invention, during the operation of the elevator door panel, when an object touches the light curtain touch plate, the light curtain touch plate is pushed upward by the object to drive the light curtain touch plate swing arm to rotate upward, and the swing arm touch plate rotates to disengage from the light curtain touch plate micro switch.

[0020] In one embodiment of the present invention, the elevator safety protection mechanism further includes a first limit pin, which is arranged on the car door panel and located on the inner side of the upward rotation direction of the light curtain touch plate swing arm to limit the excessive upward rotation of the light curtain touch plate swing arm;

[0021] or,

[0022] The elevator protection mechanism also includes a second limit pin, which is arranged on the car door panel and located outside the downward rotation direction of the light curtain touch plate swing arm to limit the excessive downward rotation of the light curtain touch plate swing arm.

[0023] To achieve the above object, the present invention also provides an elevator, which includes the elevator safety protection mechanism as described above.

[0024] The technical solution of the present invention is to set a door closing microswitch and a door opening microswitch on one of the door machine plate or the hanging plate, set a door closing trigger bracket and a door opening trigger bracket on the other, and set a light curtain touch panel, a light curtain touch panel swing arm and a light curtain touch panel microswitch on the car door panel. By monitoring whether the door closing trigger bracket triggers the door closing microswitch to form a door closing position signal, whether the door opening trigger bracket triggers the door opening microswitch to form a door opening position signal, whether the light curtain touch panel drives the light curtain touch panel swing arm to trigger the light curtain touch panel microswitch to form a light curtain touch panel detection signal, and whether the infrared receiver in the light curtain touch panel completely receives the light beam emitted by the infrared transmitter to form a light curtain detection signal, the elevator door is controlled to execute the normal operation state or the door opening operation state. The present invention realizes signal detection of multiple points during the movement of the car door panel by arranging a trigger bracket, a micro switch, a light curtain touch panel and a light curtain touch panel swing arm structure, and realizes the operation control of the elevator door through signal detection. The structure is simple, does not need to occupy too much space in the direction of the sill width, is suitable for the operation monitoring and control of the car doors of various elevators, and reduces the installation cost at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 This is a front view of the elevator safety protection mechanism of the present invention when the car door panel is in a normal operating state;

[0027] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0028] Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0029] Figure 4 This is a front view of the elevator safety protection mechanism of the present invention when the car door panel is in a closed state;

[0030] Figure 5 for Figure 4 The enlarged schematic diagram of the center C;

[0031] Figure 6 for Figure 4 The enlarged schematic diagram of point D in the middle;

[0032] Figure 7 This is a back view of the elevator safety protection mechanism of the present invention when the car door panel is in a fully closed state;

[0033] Figure 8 It is a side view of the elevator safety protection mechanism of the present invention;

[0034] Fig. 9 for Figure 7 The enlarged schematic diagram of point E in the middle;

[0035] Fig.10 This is a front view of the elevator safety protection mechanism of the present invention when the car door panel is about to move to the state of closing the door;

[0036] Fig.11 for Fig.10 The enlarged schematic diagram of F in the middle;

[0037] Fig.12 for Fig.10 The enlarged schematic diagram of G in the middle;

[0038] Fig.13 This is a back view of the elevator safety protection mechanism of the present invention when the car door panel is about to move to the state of closing the door;

[0039] Fig.14 for Fig.13 The enlarged schematic diagram of the H in the middle;

[0040] Fig.15 This is a front view of the elevator safety protection mechanism of the present invention when the car door panel is about to move to the door opening position;

[0041] Fig.16 for Fig.15 The enlarged schematic diagram of point I in the middle;

[0042] Fig.17 for Fig.15 The enlarged schematic diagram of J in the middle;

[0043] Fig.18This is a back view of the elevator safety protection mechanism of the present invention when the car door panel is about to move to the door opening position;

[0044] Fig.19 for Fig.18 The enlarged schematic diagram of K in the middle;

[0045] Fig. 20 This is a front view of the elevator safety protection mechanism of the present invention when the car door panel is in the door-opening state;

[0046] Fig.21 for Fig. 20 The enlarged schematic diagram of L in the middle;

[0047] Fig. 22 for Fig. 20 The enlarged schematic diagram of the M in the middle;

[0048] Fig.23 This is a back view of the elevator safety protection mechanism of the present invention when the car door panel is in the door-opening state;

[0049] Fig.24 for Fig.23 The enlarged schematic diagram of the N position in the middle;

[0050] Fig.25 This is a front view of the elevator safety protection mechanism of the present invention when the car door panel is in normal operating state and an object touches the light curtain touch panel;

[0051] Fig.26 for Fig.25 Enlarged schematic diagram of point P in the middle.

[0052] Description of Figure Numbers:

[0053] name Label name Label Door panel 1 Door closing micro switch 11 Door open micro switch 12 Door closing support 13 Inclined plate 131 Door opening auxiliary bracket 14 Roller channel 141 Lifting part 142 Horizontal 143 Hanging board 2 Door closing trigger bracket 21 Door opening trigger bracket 22 Car door panel 3 Light curtain touch panel swing arm 31 Swing arm touch panel 311 Light curtain touch panel micro switch 32 Reinforcement 33 Light curtain touch panel 4 Roller bracket 41 Scroll Wheel 42 First stop pin 5 Second limit pin 6

[0054] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0055] 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 described embodiments 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 without creative work are within the scope of protection of the present invention.

[0056] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0057] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0058] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0059] The present invention proposes an elevator safety protection mechanism, aiming to solve the technical problems in the existing technical solutions that the elevator safety protection mechanism has a complex structure, high cost, and is not suitable for narrow sill elevators.

[0060] Ginseng Figures 1 to 26 As shown, in an embodiment of the present invention, an elevator safety protection mechanism is proposed, comprising a door machine panel 1 and two hanging panels 2 slidably mounted on the door machine panel 1, the hanging panels 2 are used to drive two car door panels 3 to open or close, and light curtain touch panels 4 are respectively mounted on the two car door panels 3, one of the light curtain touch panels 4 is mounted with an infrared transmitter, and the other light curtain touch panel 4 is mounted with an infrared receiver, and the infrared receiver forms a light curtain normal detection signal when the infrared receiver completely receives the light beam emitted by the infrared transmitter, otherwise it forms a light curtain abnormal detection signal;

[0061] The elevator safety protection mechanism also includes a door closing micro switch 11 and a door opening micro switch 12 arranged on one of the door machine plate 1 or the hanging plate 2, a door closing trigger bracket 21 and a door opening trigger bracket 22 arranged on the other, and a light curtain touch plate swing arm 31 and a light curtain touch plate micro switch 32 arranged on the car door plate 3;

[0062] When the elevator car door panel 3 is in full closing position, the door closing trigger bracket 21 triggers the door closing micro switch 11 to form a door closing position signal; when the elevator car door panel 3 is in full opening position, the door opening trigger bracket 22 triggers the door opening micro switch 12 to form a door opening position signal; during the operation of the elevator car door panel 3, the light curtain touch panel 4 drives the light curtain touch panel swing arm 31 to trigger the light curtain touch panel micro switch 32 to form a light curtain touch panel normal detection signal, and when an object touches the light curtain touch panel 4, the light curtain touch panel 4 drives the light curtain touch panel swing arm 31 to separate from the light curtain touch panel micro switch 32 to form a light curtain touch panel abnormal detection signal;

[0063] The elevator inverter determines whether the elevator door is in normal operation or door opening state according to the normal detection signal of the light curtain, the abnormal detection signal of the light curtain, the door closing position signal, the door opening position signal, the normal detection signal of the light curtain touch panel and the abnormal detection signal of the light curtain touch panel.

[0064] Ginseng Figures 1 to 26 As shown, the present invention proposes an elevator safety protection mechanism, including a door machine plate 1 and two hanging plates 2 slidably mounted on the door machine plate 1, and two car door plates 3 are respectively mounted on the two hanging plates 2 and follow the movement of the hanging plates 2 to realize the opening or closing of the elevator door. A door-related microswitch 11 and a door-opening microswitch 12 are arranged on either the door machine plate 1 or the hanging plate 2, and a door-related trigger bracket 21 and a door-opening trigger bracket 22 are arranged on the other. A light curtain touch panel swing arm 31 and a light curtain touch panel microswitch 32 are arranged on the car door plate 3, and the light curtain touch panel swing arm 31 is connected to the light curtain touch panel 4, and the movement of the light curtain touch panel 4 drives the light curtain touch panel swing arm 31 and the light curtain touch panel microswitch 32 to contact or separate. At least two pairs of light curtain touch panel swing arms 31 and light curtain touch panel microswitch 32 are arranged, respectively arranged on the two car door plates 3.

[0065] A light curtain touch panel 4 is installed on the panel surface of the car door panel 3 facing the elevator floor door. The light curtain touch panel 4 is integrated with a safety touch panel and a light curtain. An infrared transmitter is installed in the light curtain touch panel 4 on one of the car door panels 3, and an infrared receiver is installed in the light curtain touch panel 4 on the other car door panel 3. The infrared receiver is used to receive the light beam emitted by the infrared transmitter to realize the function of light curtain detection. Specifically, when no object enters or exits the car, all the light beams emitted by the infrared transmitter can be completely received by the infrared receiver and form a normal light curtain detection signal to be transmitted to the elevator inverter; when an object enters or exits the car, part of the light beam emitted by the infrared transmitter is blocked and cannot be completely received by the infrared receiver. At this time, the infrared receiver will output a light curtain abnormal detection signal to the elevator inverter. After receiving the signal, the elevator inverter outputs a door opening signal to prevent people and objects from being trapped.

[0066] Please refer to Figure 4 , Figure 5 and Figure 6As shown, when the elevator car door panel 3 moves to the door closing position, the door closing trigger bracket 21 triggers the door closing micro switch 11 to form a door closing position signal and transmits it to the elevator inverter. At this time, the door opening trigger bracket 22 is separated from the door opening micro switch 12, and the door opening position signal cannot be formed, and the light curtain touch panel 4 is lifted and retracted to drive the light curtain touch panel swing arm 31 to separate from the light curtain touch panel micro switch 32 to form a light curtain touch panel abnormality detection signal.

[0067] Please refer to Fig. 20 , Fig.21 and Fig. 22 As shown, when the elevator car door panel 3 moves to the door opening position, the door opening trigger bracket 22 triggers the door opening micro switch 12 to form a door opening position signal and transmits it to the elevator inverter. At this time, the door closing trigger bracket 21 is separated from the door closing micro switch 11, and the door closing position signal cannot be formed, and the light curtain touch panel 4 is lifted and retracted to drive the light curtain touch panel swing arm 31 to separate from the light curtain touch panel micro switch 32 to form a light curtain touch panel abnormality detection signal.

[0068] Please refer to Figure 1 , Figure 3 , Fig.25 and Fig.26 As shown, when the elevator car door panel 3 is in normal operation, the door closing trigger bracket 21 is separated from the door closing micro switch 11, and the door closing signal cannot be generated. At the same time, the door opening trigger bracket 22 is separated from the door opening micro switch 12, and the door opening signal cannot be generated. However, the light curtain touch panel 4 falls under the action of its own gravity, driving the light curtain touch panel swing arm 31 to trigger the light curtain touch panel micro switch 32 to generate a light curtain touch panel normal detection signal and transmit it to the elevator inverter. When an object enters or exits the car and touches the light curtain touch panel 4, the light curtain touch panel 4 drives the light curtain touch panel swing arm 31 to separate from the light curtain touch panel micro switch 32 to generate a light curtain touch panel abnormal detection signal and transmit it to the elevator inverter.

[0069] The elevator inverter determines whether the elevator door continues to execute the normal operation state or the door opening state to prevent the door panel 3 from clamping people or objects based on the received light curtain normal detection signal, light curtain abnormal detection signal, door closing position signal, door opening position signal, light curtain touch panel normal detection signal and light curtain touch panel abnormal detection signal combined with the position of the elevator door panel 3.

[0070] The present invention arranges a door closing micro switch 11 and a door opening micro switch 12 on one of the door machine plate 1 or the hanging plate 2, arranges a door closing trigger bracket 21 and a door opening trigger bracket 22 on the other, and arranges a light curtain touch panel 4, a light curtain touch panel swing arm 31 and a light curtain touch panel micro switch 32 on the car door panel 3. By monitoring whether the door closing trigger bracket 21 triggers the door closing micro switch 11 to form a door closing position signal, whether the door opening trigger bracket 22 triggers the door opening micro switch 12 to form a door opening position signal, whether the light curtain touch panel 4 drives the light curtain touch panel swing arm 31 to trigger the light curtain touch panel micro switch 32 to form a light curtain touch panel detection signal, and whether the infrared receiver in the light curtain touch panel 4 completely receives the light beam emitted by the infrared transmitter to form a light curtain detection signal, the elevator door is controlled to execute a normal operation state or a door opening operation state. The present invention realizes signal detection of multiple points during the movement of the car door panel 3 by arranging a trigger bracket, a micro switch, a light curtain touch panel 4 and a light curtain touch panel swing arm 31, and realizes the operation control of the elevator door through signal detection. The structure is simple and does not need to occupy too much space in the direction of the sill width. It is suitable for monitoring and controlling the operation of the car doors of various types of elevators, and at the same time reduces the installation cost.

[0071] Furthermore, the light curtain touch panel 4 is in a retracted state when the car door panel 3 is fully closed or fully opened, and is in a vertically falling state during the operation of the car door panel 3;

[0072] When the elevator car door panel 3 is fully closed, the elevator inverter instructs the elevator car door to operate normally according to the received door-closed-fully closed signal and the normal detection signal of the light curtain;

[0073] When the elevator car door panel 3 is fully opened, the elevator inverter instructs the elevator car door to operate normally according to the received door opening signal and the normal detection signal of the light curtain. At this time, when an object enters or leaves the car, the elevator inverter extends the door opening time of the elevator car door panel 3 according to the received abnormal detection signal of the light curtain.

[0074] During the operation of the elevator door panel 3, the elevator inverter instructs the elevator door to operate normally according to the received light curtain touch panel normal detection signal and the light curtain normal detection signal; when an object enters or exits the car or touches the light curtain touch panel 4, the infrared receiver fails to completely receive the light beam emitted by the infrared transmitter and forms a light curtain abnormal detection signal, or the light curtain touch panel 4 is pushed by the object and changes from a vertical falling state to a retracted state, thereby driving the light curtain touch panel swing arm 31 to separate from the light curtain touch panel microswitch 32 to form a light curtain touch panel abnormal detection signal, and the elevator inverter instructs the elevator door to open according to the received light curtain abnormal detection signal or the light curtain touch panel abnormal detection signal.

[0075] Please refer to Figure 4 , Fig. 20As shown in the figure, when the elevator car door panel 3 moves to the door closing position and the door opening position, the light curtain touch panel 4 will be lifted and retracted to the side of the car door panel 3 facing the elevator door without protruding from the side of the car door panel 3 to avoid mutual collision between the two light curtain touch panels 4 or increase the distance between the elevator doors when they are fully opened. Figure 1 As shown, during the operation of the elevator car door panel 3, the light curtain touch panel 4 is in a vertical falling state under the action of its own gravity and protrudes from the side of the car door panel 3 to sense the collision of objects to avoid pinching people or objects. Specifically, the light curtain touch panel 4 can protrude from the side of the car door panel 3 by about 5 mm.

[0076] Please refer to Figure 2 As shown, taking the door closing micro switch 11 and the door opening micro switch 12 as an example, the door closing micro switch 11 and the door opening micro switch 12 are arranged on the door machine plate 1, and the door closing trigger bracket 21 and the door opening trigger bracket 22 are arranged on the hanging plate 2. Figure 4 and Figure 5 As shown, when the elevator car door panel 3 runs to the door closing position, the door closing trigger bracket 21 triggers the door closing micro switch 11 to form a door closing position signal and transmits it to the elevator inverter. The infrared receiver in one light curtain touch panel 4 completely receives the light beam emitted by the infrared transmitter in another light curtain touch panel 4 to form a light curtain normal detection signal and transmits it to the elevator inverter. The elevator inverter maintains the normal operation of the elevator car door according to the received door closing position signal and light curtain normal detection signal, that is, maintains the door closing position. When an elevator passenger presses the elevator call and needs to use the elevator, the elevator car door can operate normally to open the door.

[0077] Please refer to Fig. 20 , Fig.21 As shown, when the elevator car door panel 3 runs to the door opening position, the door opening trigger bracket 22 triggers the door opening micro switch 12 to form a door opening position signal and transmits it to the elevator inverter. The infrared receiver in one light curtain touch panel 4 completely receives the light beam emitted by the infrared transmitter in another light curtain touch panel 4 to form a light curtain normal detection signal and transmits it to the elevator inverter. The elevator inverter maintains the normal operation of the elevator car door according to the received door opening position signal and the light curtain normal detection signal, that is, maintains the door opening position until the time for maintaining the door opening position set by the elevator inverter reaches the threshold, and the elevator car door switches to the door closing operation. When the elevator car door panel 3 is fully opened, an object enters or exits the car to block the light beam emitted by the infrared transmitter in the light curtain touch panel 4 and forms a light curtain abnormality detection signal to be transmitted to the elevator inverter. The elevator inverter extends the door opening time of the elevator car door panel 3 according to the received light curtain abnormality detection signal. When the extension time threshold is reached, if the light curtain abnormality detection signal is not detected, the elevator car door turns to the door closing operation. If the light curtain abnormality detection signal is still detected, the door opening time of the elevator car door panel 3 is further extended until the light curtain abnormality detection signal is no longer detected. The elevator car door turns to the door closing operation. The door opening time and the door opening extension time in this embodiment are not specifically limited.

[0078] Please refer to Figure 1 , Figure 3 As shown, during the normal operation of the elevator car door panel 3, the light curtain touch panel 4 falls under the action of its own gravity, driving the light curtain touch panel swing arm 31 to trigger the light curtain touch panel micro switch 32 to form a light curtain touch panel normal detection signal and transmit it to the elevator inverter. The infrared receiver in one light curtain touch panel 4 completely receives the light beam emitted by the infrared transmitter in another light curtain touch panel 4 to form a light curtain normal detection signal and transmit it to the elevator inverter. The elevator inverter maintains the normal operation of the elevator car door according to the received light curtain touch panel normal detection signal and the light curtain normal detection signal, that is, if the elevator car door panel 3 is in the normal door closing operation state, it continues to maintain the door closing operation state. If a passenger presses the elevator call and needs to use the elevator, the elevator car door can be switched to the door opening operation. If the elevator car door panel 3 is in the normal door opening operation state, it continues to maintain the door opening operation state.

[0079] Please refer to Fig.25 , Fig.26 As shown, during the normal operation of the elevator car door panel 3, when an object enters or exits the car or touches the light curtain touch panel 4, the object blocks the light beam emitted by the infrared transmitter in one light curtain touch panel 4, so that the infrared receiver in the other light curtain touch panel 4 cannot be completely received, thereby forming a light curtain abnormality detection signal and transmitting it to the elevator inverter, or the object directly touches the light curtain touch panel 4 when entering or exiting the car, so that the light curtain touch panel 4 changes from a vertical falling state to a retracted state and drives the light curtain touch panel swing arm 31 to separate from the light curtain touch panel micro switch 32 to form a light curtain touch panel abnormality detection signal and transmit it to the elevator inverter, and the elevator inverter instructs the elevator car door to open the door according to the received light curtain abnormality detection signal or light curtain touch panel abnormality detection signal, that is, if the elevator car door panel 3 is in a normal door closing operation state, the elevator car door is converted to an opening operation, and if the elevator car door panel 3 is in a normal door opening operation state, the door continues to be opened until it runs to the door opening position. In the present embodiment, objects entering and exiting the car are not only detected by the infrared transmitter and the infrared receiver, but also by whether the light curtain touch panel 4 is touched by the object. This enhances the efficiency of detecting objects entering and exiting the car, and also compensates for the disadvantage that the infrared transmitter and the infrared receiver cannot fully detect at a lower or higher position, thereby fully avoiding the situation where the car door panel 3 may pinch people or objects.

[0080] Furthermore, a door microswitch 11 and a door opening microswitch 12 are arranged on the panel surface of the door machine panel 1 facing the elevator floor door, and a door trigger bracket 21 and a door opening trigger bracket 22 are arranged on the panel surface of the hanging plate 2 facing the elevator floor door. When the hanging plate 2 drives the car door panel 3 to close the door and move to the door closing position, the door closing trigger bracket 21 moving with the hanging plate 2 contacts the door closing microswitch 11 and forms a door closing signal. When the hanging plate 2 drives the car door panel 3 to open the door and move to the door opening position, the door opening trigger bracket 22 moving with the hanging plate 2 contacts the door opening microswitch 12 and forms a door opening signal.

[0081] Please refer to Figure 2 , Figure 4 and Fig. 20 As shown, the door closing micro switch 11 and the door opening micro switch 12 are directly or indirectly mounted on the surface of the door machine board 1 facing the elevator floor door, and the door closing trigger bracket 21 and the door opening trigger bracket 22 are directly or indirectly mounted on the surface of the hanging board 2 facing the elevator floor door. Specifically, if the door closing trigger bracket 21 and the door opening trigger bracket 22 are both arranged on the right hanging board, the door closing micro switch 11 is located in the middle of the surface of the door machine board 1, and the door opening micro switch 12 is arranged on the right side of the surface of the door machine board 1; if the door closing trigger bracket 21 and the door opening trigger bracket 22 are both arranged on the left hanging board, the door closing micro switch 11 is located in the middle of the surface of the door machine board 1, and the door opening micro switch 12 is arranged on the left side of the surface of the door machine board 1; of course, the door closing trigger bracket 21 and the door opening trigger bracket 22 can also be arranged on the right hanging board. The door trigger bracket 22 is separately arranged on two hanging boards, and the door closing micro switch 11 and the door opening micro switch 12 can be installed at reasonable positions on the board surface of the door machine board 1 according to actual needs, as long as it is ensured that when the hanging board 2 drives the car door panel 3 to close the door and move to the door closing position, the door closing trigger bracket 21 moving with the hanging board 2 abuts against the door closing micro switch 11, and when the hanging board 2 drives the car door panel 3 to open the door and move to the door opening position, the door opening trigger bracket 22 moving with the hanging board 2 abuts against the door opening micro switch 12. This embodiment realizes the triggering of the door opening position signal and the door closing position signal when the car door panel 3 is closed and opened through a simple structural design, and the door closing micro switch 11, the door opening micro switch 12, the door closing trigger bracket 21, and the door opening trigger bracket 22 can be pre-installed on the door machine board 1 or the hanging board 2 at the factory, avoiding on-site installation and debugging, and these structures are simple and do not occupy too much space in the sill width direction, suitable for installation of various elevators, and reduce costs.

[0082] Furthermore, a door closing auxiliary bracket 13 extending out of the bottom surface of the door machine plate 1 is provided on the plate surface of the door machine plate 1 on the side facing away from the elevator floor door, and the part of the door closing auxiliary bracket 13 extending out of the door machine plate 1 forms an inclined plate portion 131. The light curtain touch plate 4 is provided on the car door plate 3 on the side facing the elevator floor door, and the top of the light curtain touch plate 4 extends upward from the top surface of the car door plate 3 and extends to the back of the car door plate 3 and then extends downward to form a roller bracket 41. A roller 42 is installed on the roller bracket 41. When the car door plate 3 is closed in place, the roller 42 moves to the inclined surface of the inclined plate portion 131 to drive the light curtain touch plate 4 to move upward and retract.

[0083] Please refer to Figure 7 , Figure 8 and Fig. 9 As shown, a door closing auxiliary bracket 13 is arranged on the panel surface of the door machine panel 1 on the side facing away from the elevator landing door. The door closing auxiliary bracket 13 can be installed in the middle position of the door machine panel 1. The door closing auxiliary bracket 13 extends out of the bottom surface of the door machine panel 1 and forms an inclined plate portion 131. The light curtain touch panel 4 is arranged on the panel surface of the car door panel 3 on the side facing the elevator landing door. The top of the light curtain touch panel 4 extends upward from the top surface of the car door panel 3 and extends to the back of the car door panel 3 and then extends downward to form a roller bracket 41. The roller bracket 41 is installed with a roller 42. When the car door panel 3 moves from the door closing operation process to the door closing position, the roller 42 moves to the inclined surface of the inclined plate portion 131 and continues to roll along the inclined surface to drive the light curtain touch panel 4 that falls due to gravity to move upward and retract to the panel side of the car door panel 3 without protruding from the side of the car door panel 3. This embodiment realizes the function of automatically retracting the light curtain touch panel 4 when the car door panel 3 is closed in place through a simple structural design, and the structural design does not occupy too much space in the width direction of the sill. The door closing auxiliary bracket 13, the light curtain touch panel 4, the roller bracket 41, and the roller 42 can be pre-installed at the factory to avoid on-site installation and debugging. It is suitable for installation in various types of elevators. At the same time, the structure is simple and the cost is reduced.

[0084] Furthermore, a door opening auxiliary bracket 14 extending out of the bottom surface of the door machine panel 1 is provided on the panel surface of the door machine panel 1 on the side facing away from the elevator floor door, and a roller channel 141 is provided at the bottom of the door opening auxiliary bracket 14, and an inclined extending lifting portion 142 is provided on the roller channel 141. When the car door panel 3 is opened into place, the roller 42 on the roller bracket 41 moves to the lifting portion 142 and rolls upward along the lifting portion 142 to drive the light curtain touch panel 4 to move upward and retract.

[0085] Please refer to Fig.23 and Fig.24As shown, a pair of door opening auxiliary brackets 14 are arranged on the panel surface of the door machine panel 1 on the side facing away from the elevator landing door, and the pair of door opening auxiliary brackets 14 are located on both sides of the door machine panel 1, and the pair of door opening auxiliary brackets 14 are symmetrically arranged relative to the door closing auxiliary bracket 13. The door opening auxiliary bracket 14 extends out of the bottom surface of the door machine panel 1 and a roller channel 141 is arranged at the bottom of the door opening auxiliary bracket 14, and the roller channel 141 is composed of a horizontal portion 143 and a lifting portion 142 connected to the end of the horizontal portion 143 and extending upward. When the car door panel 3 moves from the door opening operation process to the door opening position, the roller 42 moves from the horizontal portion 143 of the roller channel 141 to the lifting portion 142, and continues to roll along the lifting portion 142 to drive the light curtain touch panel 4 that falls due to gravity to move upward and retract to the panel side of the car door panel 3 without protruding from the side of the car door panel 3 to meet the standard of the elevator door spacing, and prevent the light curtain touch panel 4 from being damaged by multiple collisions when passengers enter and exit the car. This embodiment realizes the function of automatically retracting the light curtain touch panel 4 when the car door panel 3 is fully opened through a simple structural design, and the structural design does not occupy too much space in the width direction of the sill, and the door opening auxiliary bracket 14, the light curtain touch panel 4, the roller bracket 41, and the roller 42 can be pre-installed at the factory to avoid on-site installation and debugging. It is suitable for installation in various types of elevators, and at the same time has a simple structure and reduces costs.

[0086] Furthermore, the light curtain touch panel swing arm 31 is installed on the car door panel 3 through a rotating bearing, and the light curtain touch panel 4 is installed on the light curtain touch panel swing arm 31 through a rotating bearing. When the light curtain touch panel 4 is in a vertical falling state under the action of its own gravity, the light curtain touch panel 4 protrudes from the side of the car door panel 3 and is located in the space of the elevator passenger up and down passage. When the light curtain touch panel 4 is in a retracted state, the light curtain touch panel 4 is lifted and retracted on the side of the car door panel 3 facing the elevator floor door without protruding from the side of the car door panel 3.

[0087] Please refer to Figure 1 and Figure 3 As shown, a transversely installed door panel reinforcement rib 33 is installed on the panel surface of the car door panel 3 facing the elevator floor door, and the light curtain touch panel swing arm 31 is obliquely installed on the side of the door panel reinforcement rib 33 close to the door closing direction through a rotating bearing so as to be indirectly installed on the car door panel 3. Of course, the light curtain touch panel swing arm 31 can also be directly installed on the car door panel 3 through a rotating bearing. The light curtain touch panel 4 is installed on the side of the light curtain touch panel swing arm 31 close to the door closing direction through a rotating bearing. Since the light curtain touch panel swing arm 31 and the light curtain touch panel 4 are both installed through rotating bearings, during the movement of the elevator car door panel 3, the light curtain touch panel 4 is in a vertical falling state under the action of its own gravity and protrudes from the side of the car door panel 3 and is located in the space of the elevator passenger up and down passage. Please refer to Fig.25 and Fig.26As shown in FIG. 1 , if an object touches the light curtain touch panel 4 during the movement of the elevator car door panel 3, the light curtain touch panel 4 will be lifted and retracted, and the light curtain touch panel swing arm 31 connected to the light curtain touch panel 4 will be driven to rotate and separate from the light curtain touch panel micro switch 32. Figure 7 and Fig.23 As shown, when the elevator car door panel 3 moves to the door closing position or the door opening position, the light curtain touch panel 4 will be lifted and retracted through the structure linkage of the door closing auxiliary bracket 13, the door opening auxiliary bracket 14 and the roller 42 on the roller bracket 41. At this time, the light curtain touch panel 4 will be lifted and retracted on the side of the car door panel 3 facing the elevator floor door without protruding from the side of the car door panel 3. The light curtain touch panel micro switch 32 is installed on the side of the door panel reinforcement rib 33 close to the light curtain touch panel swing arm 31 so that when the light curtain touch panel 4 falls vertically, the light curtain touch panel swing arm 31 can be driven to trigger the light curtain touch panel micro switch 32. Of course, the light curtain touch panel micro switch 32 can also be directly installed on the elevator car door panel 3.

[0088] Furthermore, a swing arm touch plate 311 is provided at the bottom of the light curtain touch plate swing arm 31. When the light curtain touch plate 4 falls vertically, it drives the light curtain touch plate swing arm 31 to rotate downward, and the swing arm touch plate 311 rotates and contacts the light curtain touch plate micro switch 32; when the light curtain touch plate 4 is retracted, it drives the light curtain touch plate swing arm 31 to rotate upward, and the swing arm touch plate 311 rotates and disengages from the light curtain touch plate micro switch 32.

[0089] Please refer to Figure 3 As shown, the bottom of the light curtain touch panel swing arm 31 is provided with a swing arm touch panel 311 for triggering the light curtain touch panel micro switch 32. During the normal operation of the elevator car door panel 3, the light curtain touch panel 4 falls vertically under the action of its own gravity, driving the light curtain touch panel swing arm 31 to rotate downward, and the swing arm touch panel 311 rotates synchronously to contact the light curtain touch panel micro switch 32. Please refer to Figure 4 , Figure 6 , Fig. 20 , Fig. 22 As shown, when the elevator door panel 3 moves to the door closing position or the door opening position, the light curtain touch panel 4 will be lifted and retracted. During the lifting and retracting process, the light curtain touch panel 4 drives the light curtain touch panel swing arm 31 to rotate upward, and the swing arm touch panel 311 rotates synchronously and separates from the light curtain touch panel micro switch 32. In this embodiment, the light curtain touch panel swing arm 31 triggers the light curtain touch panel micro switch 32 or separates from the light curtain touch panel micro switch 32 through the action of the light curtain touch panel 4. The structure is simple, and there is no need to occupy too much space in the width direction of the sill, while reducing costs.

[0090] Furthermore, during the operation of the elevator door panel 3 , when an object touches the light curtain touch panel 4 , the light curtain touch panel 4 is pushed upward by the object to retract, driving the light curtain touch panel swing arm 31 to rotate upward, and the swing arm touch panel 311 rotates to disengage from the light curtain touch panel micro switch 32 .

[0091] Please refer to Fig.25 and Fig.26 As shown, during the operation of the elevator car door panel 3, when an object enters or exits the car and touches the light curtain touch panel 4, the light curtain touch panel 4 is pushed upward by the object to be lifted and retracted. During the lifting and retracting process, the light curtain touch panel 4 drives the light curtain touch panel swing arm 31 to rotate upward, and the swing arm touch panel 311 rotates synchronously and separates from the light curtain touch panel micro switch 32. In this embodiment, the light curtain touch panel abnormality detection signal is formed by the light curtain touch panel 4 being touched by an object to drive the light curtain touch panel swing arm 31 to separate from the light curtain touch panel micro switch 32, so as to realize the opening of the car door to prevent the phenomenon of people or objects being trapped.

[0092] Furthermore, the elevator safety protection mechanism further includes a first limit pin 5, which is arranged on the car door panel 3 and located on the inner side of the upward rotation direction of the light curtain touch plate swing arm 31, and is used to limit the excessive upward rotation of the light curtain touch plate swing arm 31;

[0093] or,

[0094] The elevator protection mechanism also includes a second limit pin 6, which is arranged on the car door panel 3 and located outside the downward rotation direction of the light curtain touch plate swing arm 31 to limit the excessive downward rotation of the light curtain touch plate swing arm 31.

[0095] Please refer to Figure 3 As shown, the elevator safety protection mechanism also includes a first limit pin 5 and a second limit pin 6 arranged on the car door panel 3. The first limit pin 5 and the second limit pin 6 can be installed on the door panel reinforcement rib 33 to be indirectly arranged on the car door panel 3 or directly installed on the car door panel 3. The first limit pin 5 and the second limit pin 6 are both arranged on the side of the light curtain touch panel swing arm 31 facing the door opening direction, and the second limit pin 6 is located obliquely below the first limit pin 5.

[0096] For details, please refer to Figure 6 and Fig. 22 As shown, the first limit pin 5 is located on the inner side of the light curtain touch plate swing arm 31 in the upward rotation direction. When the elevator car door panel 3 is in the retracted state when the door is fully closed or fully opened, the light curtain touch plate swing arm 31 can be abutted against the first limit pin 5, or it can be not abutted against the first limit pin 5. Only when the light curtain touch plate 4 is further pressed by an object, the light curtain touch plate swing arm 31 abuts against the first limit pin 5 to avoid excessive pressure on the light curtain touch plate 4; please refer to Fig.26 As shown, during the operation of the elevator door panel 3, if an object touches the light curtain touch panel 4, the light curtain touch panel 4 will be lifted and retracted, and the light curtain touch panel swing arm 31 connected to the light curtain touch panel 4 will be driven to rotate and press against the first limit pin 5 to prevent the light curtain touch panel 4 from being over-pressed.

[0097] Please refer to Figure 3As shown, the second limit pin 6 is located on the outside of the downward rotation direction of the light curtain touch panel swing arm 31. During the operation of the elevator door panel 3, the light curtain touch panel 4 falls under the action of its own gravity, driving the light curtain touch panel swing arm 31 to rotate downward and abut against the second limit pin 6 to prevent the light curtain touch panel 4 from falling excessively under the action of its own gravity.

[0098] The following reference Figures 1 to 26 The working principle of the elevator safety protection mechanism of the present invention is further explained:

[0099] During the normal operation of the elevator car door panel 3:

[0100] Please refer to Figure 1 and Figure 3 As shown, during the normal operation of the elevator car door panel 3, the light curtain touch panel 4 falls under the action of its own gravity, driving the light curtain touch panel swing arm 31 to trigger the light curtain touch panel micro switch 32 to form a normal detection signal of the light curtain touch panel and transmit it to the elevator inverter. The infrared receiver in one light curtain touch panel 4 completely receives the light beam emitted by the infrared transmitter in another light curtain touch panel 4 to form a normal detection signal of the light curtain and transmit it to the elevator inverter. The elevator inverter maintains the normal operation of the elevator car door according to the received normal detection signal of the light curtain touch panel and the normal detection signal of the light curtain. That is, if the elevator car door panel 3 is in the normal door closing operation state, it will continue to maintain the door closing operation state. When a passenger presses the elevator call and needs to use the elevator, the elevator car door can be turned to the door opening operation. If the elevator car door panel 3 is in the normal door opening operation state, it will continue to maintain the door opening operation state.

[0101] Please refer to Fig.25 and Fig.26 As shown, during the normal operation of the elevator car door panel 3, when an object enters or exits the car or touches the light curtain touch panel 4, the object blocks the light beam emitted by the infrared transmitter in one light curtain touch panel 4, so that the infrared receiver in the other light curtain touch panel 4 cannot be completely received, thereby forming a light curtain abnormality detection signal and transmitting it to the elevator inverter, or the object directly touches the light curtain touch panel 4 when entering or exiting the car, so that the light curtain touch panel 4 changes from a vertical falling state to a retracted state and drives the light curtain touch panel swing arm 31 to separate from the light curtain touch panel micro switch 32 to form a light curtain touch panel abnormality detection signal and transmit it to the elevator inverter, and the elevator inverter instructs the elevator car door to open the door according to the received light curtain abnormality detection signal or light curtain touch panel abnormality detection signal, that is, if the elevator car door panel 3 is in a normal door closing operation state, the elevator car door is converted to an opening operation, and if the elevator car door panel 3 is in a normal door opening operation state, the door continues to be opened until it runs to the door opening position.

[0102] When the elevator car door panel 3 is about to run to the door closing position:

[0103] Please refer to Fig.10 , Fig.11 , Fig.12, Fig.13 and Fig.14 As shown, when the elevator car door panel 3 is about to run to the door closing position, the door closing trigger bracket 21 triggers the door closing micro switch 11; the roller 42 moves to the inclined surface close to the inclined plate portion 131, and the light curtain touch panel 4 is still in a falling state under the action of its own gravity. The light curtain touch panel 4 drives the light curtain touch panel swing arm 31 to trigger the light curtain touch panel micro switch 32; the infrared receiver in one light curtain touch panel 4 continues to receive the light beam emitted by the infrared transmitter in the other light curtain touch panel 4; at this time, if there are objects such as glass and fingers extending into the space where the car door panel 3 is closed, the object blocks the light beam emitted by the infrared transmitter, so that the infrared receiver cannot receive it completely, thereby forming a light curtain abnormality detection signal. The signal is transmitted to the elevator inverter, or the object directly touches the light curtain touch panel 4, so that the light curtain touch panel 4 changes from the vertical falling state to the retracted state and drives the light curtain touch panel swing arm 31 to separate from the light curtain touch panel micro switch 32 to form a light curtain touch panel abnormality detection signal and transmit it to the elevator inverter. The elevator inverter instructs the elevator car door to open the door according to the received light curtain abnormality detection signal or the light curtain touch panel abnormality detection signal, that is, the elevator car door panel 3 changes from the state of about to run to the door closing position to the door opening running state, so as to prevent the occurrence of people or objects being clamped; if no object extends into the space where the car door panel 3 is closed, the elevator car door panel 3 continues to close the door until it is closed.

[0104] When the elevator car door panel 3 runs to the door closing position:

[0105] Please refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 and Fig. 9 As shown, when the elevator car door panel 3 moves to the door closing position, the door closing trigger bracket 21 continues to trigger the door closing micro switch 11 to form a door closing position signal and transmit it to the elevator inverter; the roller 42 moves to the inclined surface of the inclined plate portion 131 and continues to roll along the inclined surface to drive the light curtain touch panel 4 that falls due to gravity to move upward and retract to the plate surface side of the car door panel 3 without protruding from the side of the car door panel 3, and the light curtain touch panel swing arm 31 rotates upward and separates from the light curtain touch panel micro switch 32; the infrared receiver in one light curtain touch panel 4 completely receives the light beam emitted by the infrared transmitter in another light curtain touch panel 4 to form a light curtain normal detection signal and transmit it to the elevator inverter. The elevator inverter maintains the normal operation of the elevator car door according to the received door closing position signal and the light curtain normal detection signal, that is, maintains the door closing position state. At this time, if an elevator passenger presses the elevator call and needs to use the elevator, the elevator car door can operate normally to open the door.

[0106] When the elevator car door panel 3 is about to run to the door opening position:

[0107] Please refer to Fig.15 , Fig.16 , Fig.17 , Fig.18 and Fig.19 As shown, when the elevator car door panel 3 is about to run to the door opening position, the door opening trigger bracket 22 triggers the door opening micro switch 12; the roller 42 moves to the horizontal part 143 of the roller channel 141, and the light curtain touch panel 4 is still in a falling state under the action of its own gravity. The light curtain touch panel 4 drives the light curtain touch panel swing arm 31 to trigger the light curtain touch panel micro switch 32; the infrared receiver in one light curtain touch panel 4 continues to receive the light beam emitted by the infrared transmitter in another light curtain touch panel 4; the elevator car door panel 3 continues to open the door until the door is opened.

[0108] When the elevator car door panel 3 runs to the door opening position:

[0109] Please refer to Fig. 20 , Fig.21 , Fig. 22 , Fig.23 and Fig.24 As shown, when the elevator car door panel 3 moves to the door opening position, the door opening trigger bracket 22 continues to trigger the door opening micro switch 12 to form a door opening position signal and transmit it to the elevator inverter; the roller 42 moves from the horizontal part 143 of the roller channel 141 to the lifting part 142, and continues to roll along the lifting part 142 to drive the light curtain touch panel 4 that falls due to gravity to move upward and retract to the plate surface side of the car door panel 3 without protruding from the side of the car door panel 3, and the light curtain touch panel swing arm 31 rotates upward and separates from the light curtain touch panel micro switch 32; the infrared receiver in one light curtain touch panel 4 completely receives the light beam emitted by the infrared transmitter in another light curtain touch panel 4 to form a light curtain normal detection signal and transmit it to the elevator inverter, and the elevator inverter maintains the normal operation of the elevator car door according to the received door opening position signal and the light curtain normal detection signal, that is, the door opening position state is maintained until the time for maintaining the door opening position state set by the elevator inverter reaches the threshold, and the elevator car door is switched to the door closing operation. When the elevator car door panel 3 is fully opened, an object enters or exits the car to block the light beam emitted by the infrared transmitter in the light curtain touch panel 4, then a light curtain abnormality detection signal is generated and transmitted to the elevator inverter. The elevator inverter extends the door opening time of the elevator car door panel 3 according to the received light curtain abnormality detection signal. When the extension time threshold is reached, if the light curtain abnormality detection signal is not detected, the elevator car door switches to a closing operation. If the light curtain abnormality detection signal continues to be detected, the door opening time of the elevator car door panel 3 continues to be extended until the light curtain abnormality detection signal is no longer detected, and the elevator car door switches to a closing operation.

[0110] The present invention also provides an elevator, the elevator comprising the elevator safety protection mechanism as described above. The specific structure of the elevator safety protection mechanism refers to the above embodiments. Since the elevator adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0111] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An elevator safety protection mechanism, comprising a door machine plate (1) and two hanging plates (2) slidably mounted on the door machine plate (1), the hanging plates (2) being used to drive two car door plates (3) to open or close, light curtain touch plates (4) being respectively mounted on the two car door plates (3), one of the light curtain touch plates (4) being equipped with an infrared transmitter, and the other light curtain touch plate (4) being equipped with an infrared receiver, the infrared receiver forming a light curtain normal detection signal when completely receiving a light beam emitted by the infrared transmitter, otherwise forming a light curtain abnormal detection signal, characterized in that: The elevator safety protection mechanism also includes a door closing micro switch (11) and a door opening micro switch (12) arranged on one of the door machine panel (1) or the hanging panel (2), a door closing trigger bracket (21) and a door opening trigger bracket (22) arranged on the other, and a light curtain touch panel swing arm (31) and a light curtain touch panel micro switch (32) arranged on the car door panel (3); When the elevator car door panel (3) is in full closing position, the door closing trigger bracket (21) triggers the door closing micro switch (11) to form a door closing position signal; when the elevator car door panel (3) is in full opening position, the door opening trigger bracket (22) triggers the door opening micro switch (12) to form a door opening position signal; during the operation of the elevator car door panel (3), the light curtain touch panel (4) drives the light curtain touch panel swing arm (31) to trigger the light curtain touch panel micro switch (32) to form a light curtain touch panel normal detection signal; when an object touches the light curtain touch panel (4), the light curtain touch panel (4) drives the light curtain touch panel swing arm (31) to separate from the light curtain touch panel micro switch (32) to form a light curtain touch panel abnormal detection signal; The elevator inverter determines whether the elevator door is in normal operation or door opening state according to the normal detection signal of the light curtain, the abnormal detection signal of the light curtain, the door closing position signal, the door opening position signal, the normal detection signal of the light curtain touch panel and the abnormal detection signal of the light curtain touch panel.

2. The elevator safety protection mechanism according to claim 1, characterized in that: The light curtain touch panel (4) is in a retracted state when the car door panel (3) is fully closed or fully opened, and is in a vertically falling state during the operation of the car door panel (3); When the elevator car door panel (3) is in full-close position, the elevator frequency converter instructs the elevator car door to operate normally according to the received door-closed-position signal and the normal detection signal of the light curtain; When the elevator car door panel (3) is in full door opening position, the elevator frequency converter instructs the elevator car door to operate normally according to the received door opening position signal and the normal light curtain detection signal. At this time, when an object enters or exits the car, the elevator frequency converter prolongs the door opening position time of the elevator car door panel (3) according to the received abnormal light curtain detection signal; During the operation of the elevator door panel (3), the elevator inverter instructs the elevator door to operate normally according to the received light curtain touch panel normal detection signal and the light curtain normal detection signal; when an object enters or exits the car or touches the light curtain touch panel (4), the infrared receiver fails to completely receive the light beam emitted by the infrared transmitter and forms a light curtain abnormal detection signal, or the light curtain touch panel (4) is pushed by the object from a vertically falling state to a retracted state and drives the light curtain touch panel swing arm (31) to separate from the light curtain touch panel micro switch (32) to form a light curtain touch panel abnormal detection signal, and the elevator inverter instructs the elevator door to open according to the received light curtain abnormal detection signal or the light curtain touch panel abnormal detection signal.

3. The elevator safety protection mechanism according to claim 2, characterized in that: The door closing micro switch (11) and the door opening micro switch (12) are arranged on the panel surface of the door machine panel (1) facing the elevator floor door, and the door closing trigger bracket (21) and the door opening trigger bracket (22) are arranged on the panel surface of the hanging panel (2) facing the elevator floor door. When the hanging panel (2) drives the car door panel (3) to close the door and move to the door closing position, the door closing trigger bracket (21) moving with the hanging panel (2) contacts the door closing micro switch (11) and generates a door closing signal. When the hanging panel (2) drives the car door panel (3) to open the door and move to the door opening position, the door opening trigger bracket (22) moving with the hanging panel (2) contacts the door opening micro switch (12) and generates a door opening signal.

4. The elevator safety protection mechanism according to claim 2, characterized in that: A door closing auxiliary bracket (13) extending from the bottom surface of the door machine plate (1) is arranged on the plate surface of the door machine plate (1) on the side facing away from the elevator floor door, and the portion of the door closing auxiliary bracket (13) extending from the door machine plate (1) forms an inclined plate portion (131). The light curtain touch plate (4) is arranged on the car door plate (3) on the side facing the elevator floor door, and the top of the light curtain touch plate (4) extends upward from the top surface of the car door plate (3) and extends to the back of the car door plate (3) and then extends downward to form a roller bracket (41). A roller (42) is installed on the roller bracket (41). When the car door plate (3) is closed in place, the roller (42) moves to the inclined surface of the inclined plate portion (131) to drive the light curtain touch plate (4) to move upward and close.

5. The elevator safety protection mechanism according to claim 4, characterized in that: A door opening auxiliary bracket (14) extending from the bottom surface of the door machine plate (1) is also provided on the plate surface of the door machine plate (1) on the side facing away from the elevator floor door, and a roller channel (141) is provided at the bottom of the door opening auxiliary bracket (14), and an inclined extending lifting portion (142) is provided on the roller channel (141). When the car door plate (3) is opened in place, the roller (42) on the roller bracket (41) moves to the lifting portion (142) and rolls upward along the lifting portion (142) to drive the light curtain touch panel (4) to move upward and retract.

6. The elevator safety protection mechanism according to claim 2, characterized in that: The light curtain touch panel swing arm (31) is mounted on the car door panel (3) via a rotary bearing, and the light curtain touch panel (4) is mounted on the light curtain touch panel swing arm (31) via a rotary bearing. When the light curtain touch panel (4) is in a vertically falling state under the action of its own gravity, the light curtain touch panel (4) protrudes from the side of the car door panel (3) and is located in the space of the elevator passenger up and down passage. When the light curtain touch panel (4) is in a retracted state, the light curtain touch panel (4) is lifted and retracted on the side of the car door panel (3) facing the elevator floor door and does not protrude from the side of the car door panel (3).

7. The elevator safety protection mechanism according to claim 6, characterized in that: A swing arm touch plate (311) is arranged at the bottom of the light curtain touch plate swing arm (31); when the light curtain touch plate (4) falls vertically, the light curtain touch plate swing arm (31) is driven to rotate downward, and the swing arm touch plate (311) rotates to contact the light curtain touch plate micro switch (32); when the light curtain touch plate (4) is retracted, the light curtain touch plate swing arm (31) is driven to rotate upward, and the swing arm touch plate (311) rotates to disengage from the light curtain touch plate micro switch (32).

8. The elevator safety protection mechanism according to claim 7, characterized in that: During the operation of the elevator car door panel (3), when an object touches the light curtain touch panel (4), the light curtain touch panel (4) is pushed upward by the object to drive the light curtain touch panel swing arm (31) to rotate upward, and the swing arm touch panel (311) rotates to disengage from the light curtain touch panel micro switch (32).

9. The elevator safety protection mechanism according to claim 8, characterized in that: The elevator safety protection mechanism further comprises a first limit pin (5), which is arranged on the car door panel (3) and is located on the inner side of the light curtain touch plate swing arm (31) in the upward rotation direction, and is used to limit the excessive upward rotation of the light curtain touch plate swing arm (31); or, The elevator protection mechanism further comprises a second limit pin (6), which is arranged on the car door panel (3) and is located outside the downward rotation direction of the light curtain touch plate swing arm (31) and is used to limit the excessive downward rotation of the light curtain touch plate swing arm (31).

10. An elevator, characterized in that: The elevator comprises the elevator safety protection mechanism according to any one of claims 1 to 9.

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