Elevator car door vane device

Abstract

The utility model relates to an elevator car door knife device which comprises a base plate, a door knife assembly and a lock hook assembly, the door knife assembly and the lock hook assembly are arranged on the two sides of the base plate respectively, a transmission plate connected with an external motor is arranged on the same side of the lock hook assembly, and a first rotating shaft is connected between the transmission plate and the door knife assembly, penetrates through the base plate and is rotationally connected with the base plate. The transmission plate controls opening and closing of the door knife assembly through the first rotating shaft. A special-shaped through hole is formed in the base plate, a swing arm is arranged in the special-shaped through hole, a second rotating shaft is connected between the swing arm and the transmission plate, one end of the swing arm is arranged close to the lock hook assembly, the transmission plate drives the swing arm to swing through the second rotating shaft, and the swing arm swings to control the lock hook assembly to be locked or unlocked with a lock nose assembled externally in advance. The conditions that in the related technology, the structure of a door vane device is thick and heavy, the installation space needing to be reserved is larger, and the space utilization rate of an elevator shaft is not high are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of elevator components, and in particular to an elevator car door knife device. Background Technology

[0002] The elevator car door operator is the opening and closing device of the elevator car door. It is the main mechanism responsible for opening and closing the elevator car door. When it receives the elevator door opening or closing signal, the elevator door operator controls the door opening motor through its own control system, converting the torque generated by the motor into a force in a specific direction, thereby closing or opening the door.

[0003] A certain distance needs to be reserved between the elevator door knife and the hall door sill to avoid the elevator door knife wearing out or getting stuck on the hall door sill during elevator operation due to the gap being too small.

[0004] In the application scenario of home elevators, the installation space reserved for elevator shafts is relatively limited, and the usable area inside the car is small. In order to make room for the door operator, the volume of the car will be further reduced, resulting in a poor user experience.

[0005] Because door knife devices often integrate functions such as braking and coordinating with door ball control to open and close hall doors, and are equipped with multiple locking structures for safety purposes, their structure is layered, resulting in a relatively heavy structure that requires more installation space and low space utilization in elevator shafts. Utility Model Content

[0006] In order to improve the situation where the door knife device in the related technology is relatively bulky, requires more installation space, and has low space utilization in the elevator shaft, this application provides an elevator car door knife device that is lightweight, reduces the installation space required by the user for the door knife device, and improves the space utilization of the elevator shaft.

[0007] This application provides an elevator car door knife device, which adopts the following technical solution:

[0008] An elevator car door knife device includes a base plate and door knife assemblies and a locking hook assembly disposed on both sides of the base plate. A transmission plate connected to an external motor is disposed on the same side of the locking hook assembly. A first rotating shaft is connected between the transmission plate and the door knife assembly. The first rotating shaft passes through the base plate and is rotatably connected to the base plate. The transmission plate controls the opening and closing of the door knife assembly via the first rotating shaft.

[0009] The substrate has an irregularly shaped through hole, and a swing arm is provided in the irregularly shaped through hole. A second rotating shaft is connected between the swing arm and the transmission plate. One end of the swing arm is located close to the lock hook assembly. The transmission plate drives the swing arm to swing through the second rotation. The swing arm swings to control the lock hook assembly to lock or unlock with the externally pre-assembled lock nose.

[0010] Optionally, the locking hook assembly includes a locking hook body, a reset component, and a third rotating shaft. One end of the locking hook body is a follower end, and the other end of the locking hook body is a locking tongue. The locking hook body is rotatably connected to the surface of the base plate via the third rotating shaft. The locking tongue extends beyond the base plate to engage with the locking nose. The swing arm pushes the follower end to control the locking tongue to lift or lower. The reset component is located at the lower edge of the locking hook body and provides preload force to the locking tongue.

[0011] Optionally, the follower end has a limiting wheel protruding on the side facing the door knife assembly. The limiting wheel is located in the irregular through hole. When the swing arm deflects in the irregular through hole, it pushes the limiting wheel to control the lock tongue to lift.

[0012] Optionally, the surface of the locking hook body is provided with a guide rod, and the surface of the substrate is provided with a guide hole for the guide rod to slide and connect.

[0013] Optionally, the surface of the limiting wheel passes through the irregular through hole and protrudes from the surface of the substrate. A manual lever is provided on the side of the substrate away from the locking hook body. The manual lever is located above the limiting wheel and is rotatably connected to the substrate.

[0014] Optionally, a limiting post is protruding on the side of the transmission plate away from the base plate, a support shaft is provided on the surface of the base plate, a limiting piece is rotatably connected to the support shaft, the limiting piece rests on the limiting post, the limiting piece has a limiting groove for the limiting post to engage, a limiting torsion spring is sleeved on the support shaft, one end of the limiting torsion spring is connected to the base plate, and the other end of the limiting torsion spring is engaged with the limiting piece.

[0015] Optionally, a retaining member is also connected between the transmission plate and the base plate. The retaining member includes a second tension spring, one end of which is connected to the limiting post, and the other end of which is connected to the end of the base plate away from the locking hook body.

[0016] Optionally, the door knife assembly includes two door knives, a main linkage plate, and a secondary linkage plate. The main linkage plate and the secondary linkage plate are rotatably connected to the opposite side of the lock hook assembly. The upper sides of the two door knives are rotatably connected to both sides of the main linkage plate, and the lower sides of the two door knives are rotatably connected to the secondary linkage plate. A shock-absorbing assembly is provided between the main linkage plate and the base plate. The shock-absorbing assembly includes a third tension spring. One end of the third tension spring is connected to the side of the base plate away from the lock hook body, and the other end of the third tension spring is connected to the main linkage plate.

[0017] Optionally, an anti-accidental contact component is also provided between the main linkage plate and the transmission plate. The anti-accidental contact component includes an anti-accidental contact post coaxially arranged with the limiting post. An anti-accidental contact hole is provided on the upper edge of the main linkage plate. One end of the anti-accidental contact post is inserted into the anti-accidental contact hole. The anti-accidental contact hole has a margin for the anti-accidental contact post to slide within a preset offset range.

[0018] By adopting the above technical solution, while ensuring the reliability of the door knife device, the overall thickness of the door knife device is reduced by opening irregularly shaped through holes for the installation of the swing arm, improving the cooperation method of each component in the door knife device, and optimizing the layout of each component in the door knife device. Specifically, the swing arm is used to link the transmission plate and the lock hook assembly. When the transmission plate is driven to rotate by an externally pre-configured motor, the swing arm follows the rotation of the transmission plate. After the swing arm abuts against the limit wheel, it continues to push the limit wheel, causing the lock hook assembly to rotate along the third rotating shaft, thereby raising the latch and unlocking the latch and lock nose. In related technologies, the linkage structure between the transmission plate and the lock hook assembly is superimposed on the side of the transmission plate away from the base plate. The technical solution provided in this application optimizes the linkage structure, hiding the swing arm within the base plate, reducing the space occupied by the linkage structure between the transmission plate and the lock hook assembly, making the door knife device thinner overall. This effectively reduces the installation space reserved for the sill and door knife, improves the space utilization of the elevator shaft, and is suitable for applications with limited elevator installation space. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the accompanying drawings are only some embodiments of this utility model. For those skilled in the art, other embodiments and their accompanying drawings can be obtained from the embodiments shown in these drawings without creative effort.

[0020] Figure 1 This is a structural diagram of the door knife device with the door knife assembly on one side.

[0021] Figure 2This is a schematic diagram of the door knife device with the locking hook assembly on one side.

[0022] Figure 3 This is a structural diagram of the swing arm and locking hook assembly.

[0023] Figure 4 This is a schematic diagram of the linkage structure between the transmission plate and the locking hook body.

[0024] Figure 5 This is a schematic diagram of the main linkage plate mounted on the base plate.

[0025] Figure 6 This is a schematic diagram of the structure when the rubber limit bolt is far away from the limit plate.

[0026] Figure 7 This is a schematic diagram of the structure when the rubber limiting bolt and the limiting plate are in contact.

[0027] In the diagram: 1. Base plate; 2. Transmission plate; 3. First rotating shaft; 4. Irregular through hole; 5. Swing arm; 6. Second rotating shaft; 7. Lock hook body; 8. Third rotating shaft; 9. First tension spring; 10. Limiting wheel; 11. Guide surface; 12. Guide rod; 13. Guide hole; 14. Manual lever; 15. Limiting post; 16. Support shaft; 17. Limiting piece; 18. Limiting groove; 19. Limiting torsion spring; 20. Second tension spring; 21. Door knife; 22. Main linkage plate; 23. Secondary linkage plate; 24. Third tension spring; 25. Anti-accidental contact post; 26. Anti-accidental contact hole; 27. Waist-shaped hole; 28. Rubber limiting bolt. Detailed Implementation

[0028] The technical solutions of various embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] An embodiment of this utility model provides an elevator car door knife device, such as... Figures 1 to 7 As shown, it includes a base plate 1 and door knife 21 assemblies and lock hook assemblies respectively disposed on both sides of the base plate 1. A transmission plate 2 connected to an external motor is provided on the same side of the lock hook assembly. A first rotating shaft 3 is connected between the transmission plate 2 and the door knife 21 assembly. The first rotating shaft 3 passes through the base plate 1 and is rotatably connected to the base plate 1. The transmission plate 2 controls the opening and closing of the door knife 21 assembly through the first rotating shaft 3.

[0030] The substrate 1 has an irregular through hole 4, and a swing arm 5 is provided in the irregular through hole 4. A second rotating shaft 6 is connected between the swing arm 5 and the transmission plate 2. One end of the swing arm 5 is located near the lock hook assembly. The transmission plate 2 drives the swing arm 5 to swing through the second rotation. The swing arm 5 swings to control the lock hook assembly to lock or unlock with the externally pre-assembled lock nose.

[0031] Specifically, in this embodiment, from the structural distribution of the various components of the door knife device: the door knife 21 and the lock hook assembly are respectively installed on both sides of the base plate 1, the transmission plate 2 and the lock hook assembly are arranged on the same side, and the swing arm 5 used to link the transmission plate 2 and the lock hook assembly is located inside the base plate 1. The linkage structure between the transmission plate 2 and the lock hook assembly is optimized, making the overall door knife device thinner and reducing the installation space occupied by the door knife device.

[0032] In a preferred embodiment of the present invention, the lock hook assembly includes a lock hook body 7, a reset assembly, and a third rotating shaft 8. One end of the lock hook body 7 is a follower end, and the other end of the lock hook body 7 is a lock tongue. The lock hook body 7 is rotatably connected to the surface of the base plate 1 via the third rotating shaft 8. The lock tongue extends beyond the base plate 1 to engage with the lock nose. The swing arm 5 pushes the follower end to control the lock tongue to lift or lower. The reset assembly is located at the lower edge of the lock hook body 7 and provides pre-tightening force to the lock tongue.

[0033] Specifically, in this embodiment, when the latch is engaged with the lock nose, the reset component maintains the latch's position, preventing the latch from disengaging from the lock nose due to vibration during elevator operation.

[0034] In a preferred embodiment of the present invention, the reset assembly includes a first tension spring 9, one end of which is connected to the side of the base plate 1 near the latch, and the other end of which is connected to the lower edge of the lock hook body 7 away from the base plate 1.

[0035] Specifically, in this embodiment, the lock hook body 7 rotates around the third rotating shaft 8 as the rotation center. When the swing arm 5 follows the swing of the transmission plate 2 and pushes the follower end, the lock tongue is lifted upward. At this time, the first tension spring 9 is subjected to tension and deforms to store energy. At this time, the lock tongue is disengaged from the lock nose, and the lock is unlocked. When the swing arm 5 follows the movement of the transmission plate 2 and swings in the opposite direction, the lock tongue falls back under its own weight and the restoring force of the first tension spring 9, restoring the state of the lock tongue being engaged with the lock nose.

[0036] In a preferred embodiment of the present invention, a limiting wheel 10 is provided on the side of the follower end facing the door knife 21 assembly. The limiting wheel 10 is located in the irregular through hole 4. When the swing arm 5 deflects in the irregular through hole 4, it pushes the limiting wheel 10 to control the lock tongue to lift.

[0037] Specifically, in this embodiment, the follower end of the lock hook body 7 is located at the opening of the irregular through hole 4, the limiting wheel 10 passes through the irregular through hole 4, and the end of the swing arm 5 away from the second rotating shaft 6 is provided with a guide surface 11. When the swing arm 5 swings, it approaches the side of the limiting wheel 10 away from the lock tongue. Then the guide surface 11 of the swing arm 5 abuts against the limiting wheel 10. The swing arm 5 continues to swing, pushing the limiting wheel 10 to shift downward, so that the lock hook body 7 rotates and the lock tongue shifts upward until it disengages from the lock nose, thereby unlocking.

[0038] In a preferred embodiment of the present invention, a guide rod 12 is protruding from the surface of the lock hook body 7, and a guide hole 13 is provided on the surface of the base plate 1 for the guide rod 12 to slide and connect.

[0039] Specifically, in this embodiment, during the rotation of the lock hook body 7, the guide rod 12 remains within the guide hole 13. The rotation amount of the lock hook body 7 can be controlled by pre-designing the shape of the guide hole 13. The structure is simple, making the engagement between the lock tongue and the lock nose more reliable and stable.

[0040] In a preferred embodiment of the present invention, the surface of the limiting wheel 10 passes through the irregular through hole 4 and protrudes from the surface of the substrate 1. A manual lever 14 is provided on the side of the substrate 1 away from the locking hook body 7. The manual lever 14 is located above the limiting wheel 10 and is rotatably connected to the substrate 1.

[0041] Specifically, in this embodiment, the manual lever 14 is arc-shaped. One end of the manual lever 14 is rotatably connected to the edge of the base plate 1 near the bolt and below the limit wheel 10 via a rotating shaft. The other end of the manual lever 14 is located above the limit wheel 10. By attaching a hanging rope to the manual lever 14, the user can pull the hanging rope and press down the limit wheel 10 through the manual lever 14 to lift the bolt, thereby achieving manual unlocking.

[0042] In a preferred embodiment of the present invention, a limiting post 15 is protruding on the side of the transmission plate 2 away from the base plate 1. A support shaft 16 is provided on the surface of the base plate 1. A limiting piece 17 is rotatably connected to the support shaft 16. The limiting piece 17 is placed above the limiting post 15. The limiting piece 17 has a limiting groove 18 for the limiting post 15 to engage. A limiting torsion spring 19 is sleeved on the support shaft 16. One end of the limiting torsion spring 19 is connected to the base plate 1, and the other end of the limiting torsion spring 19 is engaged with the limiting piece 17.

[0043] Specifically, in this embodiment, a rubber limiting bolt 28 for engaging with the limiting plate 17 is installed on one side of the car door floor. Before the door knife device clamps the door ball and drags the door ball to control the opening of the landing door, one end of the rubber limiting bolt 28 abuts against the end of the limiting plate 17 away from the limiting post 15, causing the end of the limiting plate 17 near the limiting post 15 to lift up, and the limiting plate 17 and the limiting post 15 remain in an unlocked state. When the door knife device clamps the door ball and reciprocates, the limiting plate 17 moves away from the rubber limiting bolt 28, and the rubber limiting bolt 28 no longer abuts against the limiting plate 17. Under the action of the limiting torsion spring 19, the limiting plate 17 naturally returns, and the end of the limiting plate 17 with the limiting groove 18 engages with the limiting post 15.

[0044] In a preferred embodiment of the present invention, a retaining member is further connected between the transmission plate 2 and the base plate 1. The retaining member includes a second tension spring 20, one end of which is connected to a limiting post 15, and the other end of which is connected to the end of the base plate 1 away from the locking hook body 7.

[0045] Specifically, in this embodiment, the second tension spring 20 is used to assist the transmission plate 2 in maintaining a preset initial posture.

[0046] In a preferred embodiment of this utility model, the door knife 21 assembly includes two door knives 21, a main linkage plate 22, and a secondary linkage plate 23. The main linkage plate 22 and the secondary linkage plate 23 are rotatably connected to the opposite side of the lock hook assembly. The upper sides of the two door knives 21 are rotatably connected to the two sides of the main linkage plate 22, and the lower sides of the two door knives 21 are rotatably connected to the secondary linkage plate 23. A shock-absorbing assembly is provided between the main linkage plate 22 and the base plate 1. The shock-absorbing assembly includes a third tension spring 24. One end of the third tension spring 24 is connected to the side of the base plate 1 away from the lock hook body 7, and the other end of the third tension spring 24 is connected to the main linkage plate 22.

[0047] Specifically, in this embodiment, due to the instability of the initial output driving force, there is a situation where the transmission plate 2 vibrates. The vibration of the transmission plate 2 causes the rotation process of the main linkage plate 22 to be unstable. By setting a second tension spring 20, the main linkage plate 22 can be rotated smoothly, thereby making the opening and closing of the door knife 21 smoother and more stable.

[0048] In a preferred embodiment of this utility model, an anti-accidental contact component is further provided between the main linkage plate 22 and the transmission plate 2. The anti-accidental contact component includes an anti-accidental contact post 25 coaxially arranged with the limiting post 15. An anti-accidental contact hole 26 is provided on the upper edge of the main linkage plate 22. One end of the anti-accidental contact post 25 is inserted into the anti-accidental contact hole 26. The anti-accidental contact hole 26 has a margin for the anti-accidental contact post 25 to slide within a preset offset range.

[0049] Specifically, in this embodiment, when the transmission plate 2 rotates at a small angle, the anti-accidental contact post 25 slides into the anti-accidental contact hole 26. At this time, the main linkage plate 22 remains stationary. When the transmission plate 2 rotates through a larger angle, the anti-accidental contact post 25 slides to one end of the anti-accidental contact hole 26 and pushes the main linkage plate 22 to rotate with the transmission plate 2.

[0050] The substrate 1 has an oblong hole 27. The anti-accidental contact post 25 passes through the oblong hole 27 and the anti-accidental contact hole 26 in sequence. The oblong hole 27 is designed to be arc-shaped according to the rotation trajectory of the transmission plate 2. The oblong hole 27 is used to limit the rotation range of the transmission plate 2.

[0051] Both the anti-accidental contact post 25 and the limiting post 15 are fitted with bushings to improve their reliability and reduce the likelihood of them breaking due to wear. After the door knife device has been in use for a period of time, maintenance can be performed by replacing the worn bushings, further improving the reliability and durability of the door knife device.

[0052] In summary, while ensuring the reliability of the door knife device, the overall thickness of the door knife device is reduced by opening irregularly shaped through holes 4 for mounting the swing arm 5, improving the cooperation method of various components in the door knife device, and optimizing the layout of various components in the door knife device. Specifically, the swing arm 5 is used to link the transmission plate 2 and the lock hook assembly. When the externally pre-configured motor drives the transmission plate 2 to rotate, the swing arm 5 rotates along with the transmission plate 2. After the swing arm 5 abuts against the limit wheel 10, it continues to push the limit wheel 10, causing the lock hook assembly to rotate along the third rotating shaft 8, thereby raising the bolt and unlocking the bolt from the lock nose. In related technologies, the linkage structure between the transmission plate 2 and the locking hook assembly is superimposed on the side of the transmission plate 2 away from the base plate 1. The technical solution provided in this application optimizes the linkage structure, so that the swing arm 5 is hidden in the base plate 1, reducing the space occupied by the linkage structure between the transmission plate 2 and the locking hook assembly, making the door knife device thinner overall, effectively reducing the installation space reserved for the sill and door knife 21, improving the space utilization rate of the elevator shaft, and suitable for some application scenarios with small elevator installation space.

Claims

1. An elevator car door knife device, characterized in that: The device includes a base plate (1) and door knife (21) assemblies and a lock hook assembly disposed on both sides of the base plate (1). A transmission plate (2) for connecting to an external motor is disposed on the same side of the lock hook assembly. A first rotating shaft (3) is connected between the transmission plate (2) and the door knife (21) assembly. The first rotating shaft (3) passes through the base plate (1) and is rotatably connected to the base plate (1). The transmission plate (2) controls the opening and closing of the door knife (21) assembly via the first rotating shaft (3). The substrate (1) has an irregular through hole (4), and a swing arm (5) is provided in the irregular through hole (4). A second rotating shaft (6) is connected between the swing arm (5) and the transmission plate (2). One end of the swing arm (5) is located close to the lock hook assembly. The transmission plate (2) drives the swing arm (5) to swing through the second rotating shaft. The swing arm (5) swings to control the lock hook assembly to lock or unlock with the externally pre-assembled lock nose.

2. The elevator car door knife device according to claim 1, characterized in that: The locking hook assembly includes a locking hook body (7), a reset assembly, and a third rotating shaft (8). One end of the locking hook body (7) is a follower end, and the other end of the locking hook body (7) is a locking tongue. The locking hook body (7) is rotatably connected to the surface of the base plate (1) through the third rotating shaft (8). The locking tongue extends beyond the base plate (1) to engage with the locking nose. The swing arm (5) pushes the follower end to control the locking tongue to lift or lower. The reset assembly is located at the lower edge of the locking hook body (7) and provides preload force to the locking tongue.

3. The elevator car door knife device according to claim 2, characterized in that: The reset assembly includes a first tension spring (9), one end of which is connected to the side of the base plate (1) near the latch, and the other end of which is connected to the lower edge of the lock hook body (7) away from the base plate (1).

4. The elevator car door knife device according to claim 3, characterized in that: The follower end has a limiting wheel (10) protruding on the side facing the door knife (21) assembly. The limiting wheel (10) is located in the irregular through hole (4). When the swing arm (5) deflects in the irregular through hole (4), it pushes the limiting wheel (10) to control the lock tongue to lift.

5. The elevator car door knife device according to claim 4, characterized in that: The surface of the locking hook body (7) is provided with a guide rod (12), and the surface of the base plate (1) is provided with a guide hole (13) for the guide rod (12) to slide and connect.

6. The elevator car door knife device according to claim 5, characterized in that: The surface of the limiting wheel (10) passes through the irregular through hole (4) and protrudes from the surface of the substrate (1). A manual lever (14) is provided on the side of the substrate (1) away from the locking hook body (7). The manual lever (14) is located above the limiting wheel (10) and is rotatably connected to the substrate (1).

7. The elevator car door knife device according to claim 6, characterized in that: The transmission plate (2) has a limiting post (15) protruding on the side away from the base plate (1). The base plate (1) has a support shaft (16) on its surface. A limiting piece (17) is rotatably connected to the support shaft (16). The limiting piece (17) is placed above the limiting post (15). The limiting piece (17) has a limiting groove (18) for the limiting post (15) to engage. A limiting torsion spring (19) is sleeved on the support shaft (16). One end of the limiting torsion spring (19) is connected to the base plate (1), and the other end of the limiting torsion spring (19) is engaged with the limiting piece (17).

8. The elevator car door knife device according to claim 7, characterized in that: A retaining member is also connected between the transmission plate (2) and the base plate (1). The retaining member includes a second tension spring (20). One end of the second tension spring (20) is connected to the limiting post (15), and the other end of the second tension spring (20) is connected to the end of the base plate (1) away from the locking hook body (7).

9. The elevator car door knife device according to claim 8, characterized in that: The door knife (21) assembly includes two door knives (21), a main linkage plate (22), and a secondary linkage plate (23). The main linkage plate (22) and the secondary linkage plate (23) are rotatably connected to the opposite side of the lock hook assembly. The upper sides of the two door knives (21) are rotatably connected to the two sides of the main linkage plate (22), and the lower sides of the two door knives (21) are rotatably connected to the secondary linkage plate (23). A shock-absorbing assembly is provided between the main linkage plate (22) and the base plate (1). The shock-absorbing assembly includes a third tension spring (24). One end of the third tension spring (24) is connected to the side of the base plate (1) away from the lock hook body (7), and the other end of the third tension spring (24) is connected to the main linkage plate (22).

10. The elevator car door knife device according to claim 9, characterized in that: An anti-accidental contact component is also provided between the main linkage plate (22) and the transmission plate (2). The anti-accidental contact component includes an anti-accidental contact post (25) coaxially arranged with the limiting post (15). An anti-accidental contact hole (26) is provided on the upper edge of the main linkage plate (22). One end of the anti-accidental contact post (25) is inserted into the anti-accidental contact hole (26). The anti-accidental contact hole (26) has a margin for the anti-accidental contact post (25) to slide within a preset offset range.

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