Elevator door knife structure

Abstract

The utility model relates to the technical field of elevators, in particular to an elevator door knife structure. The elevator door knife structure comprises a lock hook assembly and a door knife assembly, the lock hook assembly is fixed to an elevator door motor bottom plate, the door knife assembly comprises a door knife bottom plate, a swing arm and an unlocking arm, the lock hook assembly is configured to be locked or unlocked in response to rotation of the swing arm, one end of the unlocking arm abuts against the swing arm, and the other end of the unlocking arm abuts against the door knife bottom plate. The other end of the unlocking arm abuts against the lock hook assembly, and when the unlocking arm approaches the door hook assembly along with movement of the elevator door plate, the end, abutting against the lock hook assembly, of the unlocking arm can ascend so that stopping of the other end of the unlocking arm to the transmission swing arm can be relieved. The device has the advantages that through the unlocking / locking effect of the unlocking arm on the swing arm, it is guaranteed that the position of the swing arm is stable, meanwhile, locking of the swing arm can be quickly relieved so that the swing arm can be prevented from being influenced in other working states needing to rotate, and the device is high in transmission efficiency, simple in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to an elevator door blade structure. Background Art

[0002] As an important component of the elevator door system, the elevator door blade structure is responsible for controlling and linking the opening and closing of the hall door, and has the locking and unlocking functions of opening and closing the door.

[0003] An elevator door blade typically consists of a blade assembly, a hook assembly, and a transmission mechanism. The transmission mechanism includes a transmission swing arm mounted on the door blade base plate. Driven by the door operator's drive mechanism, the transmission swing arm closes or opens two door blades connected to each end of the transmission swing arm, thereby controlling and linking the opening and closing of the landing door. However, existing elevator door blade structures suffer from large size, complex transmission mechanisms, low transmission efficiency, and high component costs. Utility Model Content

[0004] Based on this, the present invention provides an elevator door knife structure to address the technical problem of the complex transmission mechanism of the above-mentioned elevator door knife structure.

[0005] The doorknife assembly is configured to move the doorknife base plate toward the locking hook assembly when the door panel moves toward the locking hook assembly, and the other end of the doorknife base plate can abut against the locking hook assembly when approaching the locking hook assembly as the elevator door panel moves, so as to drive the locking end to rotate and release the stop of the transmission swing arm.

[0006] With this arrangement, at least a portion of the lock hook assembly is connected to the elevator door machine base plate; the door knife assembly is mounted on the elevator door panel, particularly the elevator car door panel. The rotation of the transmission swing arm in the door knife assembly cooperates with the lock hook assembly to switch the lock hook assembly between a locked and unlocked state, thereby controlling the locked or unlocked state of the entire elevator door knife structure. The unlocking arm, located near one end of the transmission swing arm, stops and abuts against it, thereby fixing the relative position of the transmission swing arm. When the elevator door panel moves toward the lock hook assembly, the door knife base plate moves with the elevator door panel, and drives the transmission swing arm and the unlocking arm connected to the door knife base plate to move toward the lock hook assembly. At this time, the unlocking arm is close to the end of the lock hook assembly and cooperates with the lock hook assembly. Since the middle part of the unlocking arm is rotatably connected to the door knife base plate, the unlocking arm and the door knife base plate cooperate to form a seesaw structure. If one end of the unlocking arm rotates and rises, the other end of the locking end will rotate and fall, and vice versa, thereby releasing the lock on the transmission swing arm, allowing the transmission swing arm to rotate freely, so that the door knife structure connected to the transmission swing arm can be closed. In summary, the present application has a stable locking and unlocking effect on the transmission swing arm, a simple transmission structure, low cost and a stable and reliable structure.

[0007] In one embodiment, an abutment plate is provided at one end of the unlocking arm close to the lock hook assembly, and the lock hook assembly includes a roller. The abutment plate abuts against the roller, and as the door knife base plate moves toward the lock hook assembly, the abutment plate of the unlocking arm moves along the outer peripheral wall of the roller, so that the unlocking arm rotates to drive the locking end to disengage from the transmission swing arm.

[0008] In one embodiment, a first rotating shaft and a second rotating shaft are provided on the door knife base plate, the first rotating shaft and the second rotating shaft extend in a horizontal direction, the transmission swing arm is connected to the first rotating shaft, and the unlocking arm is connected to the second rotating shaft.

[0009] In one embodiment, the unlocking arm includes a roller segment and an unlocking segment, the roller segment is connected to the unlocking segment, and one of the roller segment and the unlocking segment is bent toward the other and connected to the other through one bent end.

[0010] In one embodiment, the abutment plate is connected to an end of the unlocking segment away from the roller segment, and the abutment plate is arranged perpendicular to the unlocking segment.

[0011] In one embodiment, the abutment plate is arranged to be tilted upward in a direction close to the roller.

[0012] In one embodiment, the unlocking arm is hinged to the door knife base plate, and a torsion spring is used at the hinge to provide a holding force to drive the locking end of the unlocking arm to abut against the transmission swing arm;

[0013] A limiting hole is also provided on the door knife bottom plate, and the unlocking arm is provided with a limiting column extending into the limiting hole. The limiting column can move in the limiting hole to limit the rotation range of the unlocking arm.

[0014] In one embodiment, a clamping column extending in a horizontal direction is provided on the transmission swing arm, and a circular arc groove is provided at the locking end of the unlocking arm, and the groove wall of the circular arc groove is adapted to the outer wall of the clamping column and is clamped to the clamping column.

[0015] In one embodiment, the elevator door knife structure also includes a door knife swing arm, a first door knife and a second door knife. The door knife swing arm is arranged on the side of the door knife base plate facing away from the transmission swing arm, and is connected to the transmission swing arm through a connecting shaft passing through the door knife base plate. The two ends of the door knife swing arm are respectively connected to the first door knife and the second door knife. As the transmission swing arm rotates, the door knife swing arm rotates synchronously and drives the first door knife and the second door knife to move toward or away from each other.

[0016] In one embodiment, the lock hook assembly includes a locking seat, a contact seat, an attached hook and a contact switch, the locking seat is connected to the elevator door machine base plate and maintains a relatively fixed position, the contact seat is connected to the locking seat, the attached hook is rotatably connected to the door knife base plate, and one side of the attached hook abuts against the transmission swing arm, and can rotate synchronously in response to the rotation of the transmission swing arm so that the attached hook and the locking seat form a lock or release fit, the contact switch is connected to the attached hook, and follows the rotation of the attached hook to contact or disengage with the contact seat.

[0017] Compared with the prior art, the present invention fixes the position of the transmission swing arm for a second time by setting an unlocking arm. The unlocking arm blocks and abuts the locking end of the transmission swing arm, so that the relative position of the transmission swing arm is fixed. When the elevator door panel moves toward the lock hook assembly, the door knife base plate drives the transmission swing arm and the unlocking arm connected thereto to move toward the lock hook assembly and cooperate with the roller. The middle part of the unlocking arm is rotatably connected to the door knife base plate to form a seesaw structure. When one end of the unlocking arm rotates and rises, the other end rotates and falls. When the abutment plate gradually moves upward along the circumference of the roller, the other end of the unlocking arm gradually falls, thereby releasing the lock on the transmission swing arm and allowing the transmission swing arm to rotate freely. The abutment plate also increases the contact area between the unlocking arm and the roller, ensuring the stable rotation of the unlocking arm. The present application has stable locking and unlocking effects on the transmission swing arm, a simple transmission method, high transmission efficiency, low cost and a stable and reliable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of one embodiment of the elevator door blade structure provided by the utility model. In this diagram, one end of the elastic member is connected to the second fixing member, and the other end is not assembled in place and can be connected to the first fixing member or the third fixing member according to specific circumstances.

[0019] Figure 2 This is a structural schematic diagram from another angle of one embodiment of the elevator door blade structure provided by the utility model;

[0020] Figure 3 This is a front view of one embodiment of the elevator door blade structure provided by the utility model;

[0021] Figure 4 This is a rear view of one embodiment of the elevator door blade structure provided by the utility model;

[0022] Figure 5 This is a right side view of one embodiment of the elevator door blade structure provided by the utility model;

[0023] Figure 6 A top view of one embodiment of the elevator door blade structure provided by the present utility model;

[0024] Figure 7 for Figure 1 A partial enlarged view of point A in the figure.

[0025] The symbols in the figure mean the following:

[0026] 100. Elevator door blade structure; 10. Door blade base plate; 11. First rotating shaft; 12. Second rotating shaft; 13. Third rotating shaft; 14. First fixing member; 15. Fourth fixing member; 16. Third fixing member; 17. Second fixing member; 18. Locking column; 19. Limiting hole; 20. Transmission swing arm; 21. Second locking groove; 22. Clamping column; 30. Connecting rod; 31. First locking groove; 32. First section; 33. Second Segment; 40, lock hook assembly; 41, locking seat; 412, card interface; 42, contact seat; 43, attached hook; 431, abutment column; 44, contact switch; 45, roller; 50, elastic member; 51, hook claw; 60, unlocking arm; 61, arc groove; 62, abutment plate; 63, roller segment; 64, unlocking segment; 65, torsion spring; 66, limit column; 70, door knife swing arm; 71, first door knife; 72, second door knife. DETAILED DESCRIPTION

[0027] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0028] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it may be directly on the other mechanism or there may be a central mechanism. When a mechanism is considered to be "connected to" another mechanism, it may be directly connected to the other mechanism or there may be a central mechanism at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0030] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0032] The present utility model provides an elevator door knife structure 100, which is provided with an unlocking arm 60. The unlocking arm 60 realizes the unlocking / locking function of the transmission swing arm 20, ensuring the stable position of the transmission swing arm 20 while also being able to quickly release the lock of the transmission swing arm 20 to avoid affecting the transmission swing arm 20 in other working states that require rotation.

[0033] See Figure 1-Figure 7 The elevator door knife structure 100 includes a lock hook assembly 40 and a door knife assembly. Part of the lock hook assembly 40 is installed and fixed on the elevator door machine bottom plate, and the door knife assembly is installed on the elevator door panel and can move synchronously with the movement of the elevator door panel. The door knife assembly includes a door knife base plate 10, a transmission swing arm 20 and an unlocking arm 60. The transmission swing arm 20 is transmission-connected to the elevator door machine drive component. The transmission swing arm 20 is rotationally connected to the door knife base plate 10, and the lock hook assembly 40 is configured to be able to lock or unlock in response to the rotation of the transmission swing arm 20. The door knife base plate 10 can follow the movement of the elevator door panel to approach or move away from the lock hook assembly 40. The unlocking arm 60 is rotationally connected to the door knife base plate 10, and one end of the unlocking arm 60 is defined as a locking end, which abuts against the transmission swing arm 20 and can stop the transmission swing arm 20 from rotating toward the lock hook assembly 40. The other end can abut against the lock hook assembly 40 when approaching the lock hook assembly 40 as the elevator door panel moves, so as to drive the locking end to rotate and release the stop on the transmission swing arm 20.

[0034] Thus, the locking seat 41 in the lock hook assembly 40 is connected to the elevator door machine baseplate, which is detached from the elevator door machine baseplate and is a relatively fixed component. Therefore, the position of the locking seat 41 in the lock hook assembly 40 is also relatively fixed. In the door knife assembly, the rotation of the transmission swing arm 20 cooperates with the lock hook assembly 40 to switch the lock hook assembly 40 between the locked and unlocked states, and the lock hook assembly 40 controls the locked or unlocked state of the entire elevator door knife structure 100. The unlocking arm 60 is close to one end of the transmission swing arm 20 and stops it, abutting it, thereby fixing the relative position of the transmission swing arm 20. When the door panel moves toward the lock hook assembly 40, the door knife base plate 10 follows the elevator door panel and drives the transmission swing arm 20 and the unlocking arm 60 connected thereto to move toward the lock hook assembly 40. At this time, the unlocking arm 60, one end of the lock hook assembly 40, cooperates with the lock hook assembly 40. Since the middle part of the unlocking arm 60 is rotatably connected to the door knife base plate 10, the unlocking arm 60 and the door knife base plate 10 cooperate to form a seesaw structure. When one end of the unlocking arm 60 rotates up, the other end will rotate down. So as the unlocking arm 60 moves toward the lock hook assembly 40, if one end of the unlocking arm 60 gradually rotates up, the other end locking end of the unlocking arm 60 will gradually descend, and vice versa, that is, if one end of the unlocking arm 60 rotates down, the locking end of the unlocking arm 60 will rotate up, thereby releasing the lock of the transmission swing arm 20, allowing the transmission swing arm 20 to rotate freely, thereby allowing the door knife blade connected to the transmission swing arm 20 to close. In summary, the present application has stable locking and unlocking effects for the transmission swing arm 20, a simple transmission method, high transmission efficiency, low cost and a stable and reliable structure.

[0035] In this embodiment, the motor door machine driving component adopts a motor and a synchronous belt. The synchronous belt can be a belt, which drives the transmission swing arm 20 to rotate.

[0036] An abutment plate 62 is provided at one end of the unlocking arm 60 close to the lock hook assembly 40. The lock hook assembly 40 includes a roller 45. The abutment plate 62 abuts against the side of the roller 45 toward the door knife assembly. As the door knife base plate 10 moves toward the lock hook assembly 40, one end of the unlocking arm 60 moves along the outer wall of the roller 45, so that the unlocking arm 60 rotates to drive the other end to disengage from the transmission swing arm 20.

[0037] The abutment plate 62 also increases the contact area between the unlocking arm 60 and the roller 45, ensuring stable rotation of the unlocking arm 60. Here, since the roller 45 is a circular structure, it has a relatively high upper vertex, and the abutment plate 62 originally abuts the side of the roller 45 facing the door blade assembly. As it moves toward the roller 45, the abutment plate 62 gradually moves upward as the roller 45 rolls. In addition, the roller 45 can reduce abutment friction, replacing sliding friction with rolling friction.

[0038] The abutment plate 62 is tilted upward in the direction close to the roller 45, so as to ensure that as the abutment plate 62 moves toward the roller 45, it can move upward simultaneously along the rotation of the roller 45, thereby ensuring that the unlocking arm 60 descends away from one end of the abutment plate 62 and unlocks.

[0039] It should be explained that, in this embodiment, the vertical installation of the elevator door knife structure 100 is taken as an example. The vertical direction in the full text refers to the up and down direction when the elevator door knife structure 100 is vertically installed, that is, the direction of gravity, and the horizontal direction refers to the lateral direction perpendicular to the direction of gravity.

[0040] The door knife base plate 10 is provided with a first rotating shaft 11 and a second rotating shaft 12, the transmission swing arm 20 is connected to the first rotating shaft 11, and the unlocking arm 60 is connected to the second rotating shaft 12. The rotation connection with the door knife base plate 10 is achieved by the rotating shaft, and the structure is simple and stable.

[0041] Unlocking arm 60 includes a roller segment 63 and an unlocking segment 64. The roller segment 63 is connected to the unlocking segment 64, and one of the roller segment 63 and the unlocking segment 64 is bent toward the other and connected to the other at one end. Thus, the roller segment 63 and the unlocking segment 64 are arranged in layers horizontally, leaving a gap to create space for installing other structures (such as a rotating shaft), facilitating structural configuration.

[0042] Of course, it is understandable that in other embodiments, in order to improve processing efficiency and reduce processing costs and to increase the structural strength of the unlocking arm 60 , it can also be directly set as a straight plate. The straight plate structure does not hinder the function of the unlocking arm 60 .

[0043] Furthermore, the abutment plate 62 is connected to the end of the unlocking section 64 away from the roller section 63 and is disposed perpendicularly to the unlocking section 64. In other words, the abutment plate 62 extends perpendicularly to the unlocking section 64. This increases the contact area between the abutment plate 62 and the roller 45, resulting in a more stable abutment effect. Furthermore, the abutment plate 62, located at the end of the unlocking section 64 away from the roller section 63, can generate a greater torque during rotation, facilitating the rotation of the unlocking arm 60.

[0044] The unlocking arm 60 is hinged to the door blade base plate 10, and the hinge provides a holding force through the torsion spring 65 to drive the locking end of the unlocking arm 60 to abut against the transmission swing arm 20. In this way, the unlocking arm 60 is guaranteed not to rotate spontaneously due to gravity or other reasons such as elevator operation, which would cause the locking end to be unlocked from the transmission swing arm 20.

[0045] A limiting hole 19 is further provided on the door knife base plate 10 , and a limiting post 66 extending into the limiting hole 19 is provided on the unlocking arm 60 . The limiting post 66 can move in the limiting hole 19 to limit the rotation range of the unlocking arm 60 .

[0046] The limiting hole 19 extends along the rotation path of the unlocking arm 60 and the limiting post 66 mounted on the unlocking arm 60, so that the limiting post 66 can rotate freely in the limiting hole. The limiting hole 19 achieves a limiting effect on the limiting post 66 by abutting the hole wall against the limiting post 66.

[0047] Furthermore, the transmission swing arm 20 is provided with a horizontally extending engaging post 22, and the locking end of the unlocking arm 60 is provided with an arcuate groove 61. The groove wall of the arcuate groove 61 matches the outer wall of the engaging post 22 and engages with the engaging post 22. This provides a more stable contact effect between the unlocking arm 60 and the transmission swing arm 20, preventing the problem of separation between the two and thus unstable locking.

[0048] The door blade base plate 10 is provided with a first fixing member 14 and a third fixing member 16 for mounting one end of the elastic member 50. The transmission swing arm 20 is provided with a second fixing member 17 and a fourth fixing member 15. One end of the elastic member 50 can be mounted on the first fixing member 14 or the third fixing member 16, and the other end can be mounted on the second fixing member 17 or the fourth fixing member 15, depending on the specific situation. In this embodiment, the elastic member 50 is installed between the first fixing member 14 and the second fixing member 17 as an example for explanation. A hook 51 is provided at the end of the elastic member 50, and is installed on the corresponding first fixing member 14 and the second fixing member 17 through the hook 51; when the transmission swing arm 20 rotates, the elastic member 50 can follow the transmission swing arm 20 to rotate around the first fixing member 14. When the door knife assembly is in the open state, the axis of the elastic member 50 is located on the side of the first rotating shaft 11 close to the lock hook assembly 40. When the door knife assembly is in the closed state, the axis of the elastic member 50 is located on the side of the first rotating shaft 11 away from the lock hook assembly 40, so as to form an elastic tendency force that drives the door knife assembly to maintain a closed state.

[0049] In this manner, the first fixing member 14 and the second fixing member 17 are located on the door blade base plate 10 and the transmission swing arm 20, respectively. Therefore, one end of the elastic member 50 is connected to the transmission swing arm 20, and the other end is connected to the door blade base plate 10. Furthermore, the first fixing member 14 and the second fixing member 17 are located above and below the first rotating shaft 11, respectively. This allows the elastic member 50 to pass over the rotation center of the transmission swing arm 20. When the transmission swing arm 20 rotates, the second fixing member 17 rotates synchronously with the transmission swing arm 20. Since the door blade base plate 10 is fixed, the first fixing member 14 is fixed, so one end of the elastic member 50 rotates with the transmission swing arm 20 (the second fixing member 17), rotating around the first fixing member 14. When the axis of the elastic member 50 is aligned with the line connecting the first fixing member 14 and the second fixing member 17, the elastic force is fully applied to the line connecting the first fixing member 14 and the second fixing member 17, maintaining force balance. When the axis of the elastic member 50 rotates along with the transmission swing arm 20 to the side of the first rotating shaft 11 close to the lock hook assembly 40, the direction of the rebound force of the elastic member 50 is biased towards the side of the lock hook assembly 40, and the elastic member 50 pulls the transmission swing arm 20 toward the side of the lock hook assembly 40. The pulling force given by the elastic member 50 to the transmission swing arm 20 can make the transmission swing arm 20 always have a movement tendency toward the lock hook assembly 40. Therefore, when the elevator door knife structure 100 is powered off and the transmission swing arm 20 loses the driving force of the external driving source, the elastic member 50 can ensure that the transmission swing arm 20 continues to rotate toward the lock hook assembly 40 (only a movement tendency, and it will remain in place when it rotates to the limit) to ensure that the door knife blade remains in the open state under the power-off condition; at the same time, it prevents the transmission swing arm 20 from shaking accidentally causing the lock hook assembly 40 to be unlocked, thereby causing a safety problem. Similarly, when the axis of the elastic member 50 moves to the side of the first rotating shaft 11 facing away from the lock hook assembly 40 as the transmission swing arm 20 rotates, the elastic member 50 can pull the transmission swing arm 20 to form a movement trend facing away from the lock hook assembly 40, preventing the transmission swing arm 20 from moving toward the lock hook assembly 40, causing the elevator door knife structure 100 to automatically change from the unlocked state to the locked state.

[0050] The lock hook assembly 40 includes a hook unit, which includes a lock base 41 and a hook 43. The lock base 41 is connected to the elevator door machine base plate to ensure that the relative position of the lock base 41 is fixed. The hook is driven by the transmission swing arm 20 to form a lock or release engagement with the lock base 41. The roller 45 is mounted on the top of the lock base 41. The contact base 42 is connected to the lock base 41 and is located on the side of the lock base 41 near the transmission swing arm 20. In this way, the lock base 41 is connected to the base plate of the elevator door blade structure 100. Since the position of the elevator door blade structure 100 base plate is fixed, the position of the lock base 41 is also relatively fixed. The roller 45 is mounted on the top of the lock base 41 to facilitate interaction with the unlocking arm 60.

[0051] The hook assembly 40 further includes a connecting rod 30, which is connected to the transmission swing arm 20. Preferably, in this embodiment, the connecting rod 30 is L-shaped and is rotatably connected to the side of the transmission swing arm 20 proximal to the hook assembly 40. The transmission swing arm 20 is provided with a fourth fixing member 15, which abuts the connecting rod 30 and drives the connecting rod 30 to move synchronously with the rotation of the transmission swing arm 20. The L-shaped connecting rod 30 includes a first section 32 and a second section 33. The first section 32 and the second section 33 extend in different directions, each abutting and cooperating with a corresponding structure to prevent mutual interference. This also allows the various structures cooperating with the connecting rod 30 to be spaced far apart to prevent interference.

[0052] The fourth fixing member 15 pushes the connecting rod 30 to rotate by the abutment effect with the connecting rod 30. The fourth fixing member 15 is preferably set to a columnar structure, and the columnar structure enables the fourth fixing member 15 to ensure the same force effect on the connecting rod 30 when the connecting rod 30 rotates to various angles.

[0053] A locking column 18 is provided on the door knife base plate 10, and the locking column 18 is located on the path of the connecting rod 30 rotating toward the locking seat 41. The L-shaped connecting rod 30 includes a first section 32 and a second section 33 set at an angle, and the first section 32 and the second section 33 are connected. The side of the first section 32 close to the locking seat 41 abuts against the locking column 18, and the side of the first section 32 away from the locking seat 41 is provided with a first locking groove 31 which cooperates with the locking column 18 to form a locking structure; a second locking groove 21 is provided at one end of the transmission swing arm 20 facing the locking column 18. When the first locking groove 31 cooperates with the locking column 18 to form a locking structure, the second locking groove 21 also forms a locking structure with the locking column 18 to stop the rotation of the transmission swing arm 20. The second section 33 abuts against the fourth fixing member 15 on the side facing away from the locking seat 41. The abutting ends of the fourth fixing member 15, the locking column 18 and the attached hook 43 limit the rotation of the connecting rod 30 within a certain space. There is a locking column 18 above the connecting rod 30. The left side is restricted by the abutting end of the attached hook 43, and the right side is restricted by the fourth fixing member 15. The three form a rotation limit for the connecting rod 30.

[0054] The attachment hook 43 has an abutment post 431 that abuts tangentially against the side of the connecting rod 30 facing away from the transmission swing arm 20. The abutment post 431 ensures a stable fit between the attachment hook 43 and the connecting rod 30 and is preferably a columnar structure to ensure that the forces between the attachment hook 43 and the connecting rod 30 are balanced and stable at all angles.

[0055] The lock hook assembly 40 also includes a contact switch unit, which includes a contact switch 44 and a contact base 42. The contact base 42 is connected to the lock base 41 and is located on the side of the lock base 41 near the transmission swing arm 20, facilitating responsiveness to the transmission swing arm 20 for locking and unlocking. The contact switch 44 is linked to the attachment hook 43. Rotation of the attachment hook 43 drives the contact switch 44 mounted on the attachment hook 43, causing the contact switch 44 to engage or disengage with the contact base 42. When the contact switch 44 contacts the contact base 42, the contact base 42 emits an electrical signal indicating that the lock has been locked.

[0056] The elevator door knife structure 100 also includes a door knife swing arm 70 and a door knife blade. The door knife blade includes a first door knife 71 and a second door knife 72. The door knife swing arm 70 is arranged on the side of the door knife base plate 10 facing away from the transmission swing arm 20, and is connected to the transmission swing arm 20 through a connecting shaft passing through the door knife base plate 10. The two ends of the door knife swing arm 70 are respectively connected to the first door knife 71 and the second door knife 72. As the transmission swing arm 20 rotates, the door knife swing arm 70 rotates synchronously and drives the first door knife 71 and the second door knife 72 to move toward or away from each other.

[0057] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. An elevator door blade structure, characterized in that: The elevator door knife structure comprises: A locking hook assembly (40); Door knife assembly, installed on the elevator door panel; The door knife assembly comprises a door knife base plate (10), a transmission swing arm (20) and an unlocking arm (60), wherein the transmission swing arm (20) is transmission-connected to the elevator door machine driving member, the transmission swing arm (20) is rotationally connected to the door knife base plate (10), and the lock hook assembly (40) is configured to be able to lock or unlock in response to the rotation of the transmission swing arm (20), and the door knife base plate (10) can move closer to or away from the lock hook assembly (40) as the elevator door panel moves. The unlocking arm (60) is rotatably connected to the door knife base plate (10), and one end of the unlocking arm (60) is defined as a locking end, which abuts against the transmission swing arm (20) and can stop the transmission swing arm (20) from rotating toward the lock hook assembly (40). The other end can abut against the lock hook assembly (40) when approaching the lock hook assembly (40) as the elevator door panel moves, so as to drive the locking end to rotate and release the stop on the transmission swing arm (20).

2. The elevator door blade structure according to claim 1, characterized in that: An abutment plate (62) is provided at one end of the unlocking arm (60) close to the lock hook assembly (40), and the lock hook assembly (40) includes a roller (45). The abutment plate (62) abuts against the roller (45), and as the door knife base plate (10) moves toward the lock hook assembly (40), the abutment plate (62) of the unlocking arm (60) moves along the outer peripheral wall of the roller (45), so that the unlocking arm (60) rotates to drive the locking end to disengage from the transmission swing arm (20).

3. The elevator door blade structure according to claim 2, characterized in that: The door knife base plate (10) is provided with a first rotating shaft (11) and a second rotating shaft (12), the first rotating shaft (11) and the second rotating shaft (12) extend in a horizontal direction, the transmission swing arm (20) is connected to the first rotating shaft (11), and the unlocking arm (60) is connected to the second rotating shaft (12).

4. The elevator door blade structure according to claim 3, characterized in that: The unlocking arm (60) comprises a roller segment (63) and an unlocking segment (64), wherein the roller segment (63) is connected to the unlocking segment (64), and one of the roller segment (63) and the unlocking segment (64) is bent toward the other and connected to the other through one bent end.

5. The elevator door blade structure according to claim 4, characterized in that: The abutment plate (62) is connected to an end of the unlocking section (64) away from the roller (45), and the abutment plate (62) and the unlocking section (64) are arranged perpendicularly.

6. The elevator door blade structure according to claim 5, characterized in that: The abutment plate (62) is arranged to be inclined upward in a direction close to the roller (45).

7. The elevator door blade structure according to claim 1, characterized in that: The unlocking arm (60) is hinged on the door blade bottom plate (10), and a torsion spring (65) is used at the hinge to provide a retaining force to drive the locking end of the unlocking arm (60) to abut against the transmission swing arm (20); A limiting hole (19) is also provided on the door knife base plate (10), and the unlocking arm (60) has a limiting column (66) extending into the limiting hole (19), and the limiting column (66) can move in the limiting hole (19) to limit the rotation range of the unlocking arm (60).

8. The elevator door blade structure according to claim 1, characterized in that: The transmission swing arm (20) is provided with a clamping column (22) extending in the horizontal direction, and the locking end of the unlocking arm (60) is provided with an arc groove, the groove wall of the arc groove is adapted to the outer wall of the clamping column (22) and is clamped with the clamping column (22).

9. The elevator door blade structure according to claim 1, characterized in that: The lock hook assembly (40) includes a locking seat (41), a contact seat (42), an attached hook (43) and a contact switch (44); the locking seat (41) is connected to the elevator door machine bottom plate and keeps a relatively fixed position; the contact seat (42) is connected to the locking seat (41); the attached hook (43) is rotatably connected to the door knife bottom plate (10); one side of the attached hook (43) abuts against the transmission swing arm, and can rotate synchronously in response to the rotation of the transmission swing arm so that the attached hook (43) and the locking seat (41) form a lock or release fit; the contact switch (44) is connected to the attached hook (43) and follows the rotation of the attached hook (43) to contact or disengage with the contact seat (42).

10. The elevator door blade structure according to claim 1, characterized in that: The elevator door knife structure also includes a door knife swing arm (70), a first door knife (71) and a second door knife (72). The door knife swing arm (70) is arranged on the side of the door knife base plate (10) facing away from the transmission swing arm (20), and is connected to the transmission swing arm (20) via a connecting shaft passing through the door knife base plate (10). The two ends of the door knife swing arm (70) are respectively connected to the first door knife (71) and the second door knife (72). As the transmission swing arm (20) rotates, the door knife swing arm (70) rotates synchronously and drives the first door knife (71) and the second door knife (72) to move toward or away from each other.

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