Door opening holding device for elevator and elevator

Abstract

The present disclosure relates to a door opening holding device of an elevator and an elevator. The door opening holding device comprises a locking member provided on a frame structure of one of the car door and the landing door, and a locking cooperating member provided on the other of the car door and the landing door, which cooperates with the locking member and is movable with the associated one of the car door and the landing door between a locking position and an unlocking position, wherein when the one of the car door and the landing door is opened and the other of the car door and the landing door is opened by the door interlocking device, the locking cooperating member is in the locking position, the locking cooperating member is engaged with and locked by the locking member, so that the landing door is held open with the car door against the self-closing force of the self-closing device of the landing door without external driving force, and when the locking cooperating member is in the unlocking position, the locking cooperating member is unlocked by disengaging from the locking member.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an open door holding device of an elevator and an elevator. BACKGROUND

[0002] With the rapid development of society, the number of high-rise buildings is rapidly increasing. As a transportation tool for carrying people or goods in high-rise buildings, the elevator has become an indispensable part of people's lives, and the safety and reliability of the elevator have also attracted more and more attention. As one of the safety guarantees of the elevator, the elevator needs to have the following function: the elevator door remains open after the elevator is powered off until the power is restored.

[0003] The existing elevator is equipped with a landing door self-closing device, which functions to ensure that the landing door remains closed when the elevator car is not stopped at the landing door, preventing people from falling into the shaft. The landing door self-closing device is generally divided into spring type and weight type. In addition, the existing elevator is also equipped with an emergency power drive device, which functions to ensure that the elevator car moves to the nearest landing door (i.e., the elevator is leveled) and opens the car door after the elevator is powered off.

[0004] However, the above known elevator cannot ensure that the elevator door remains open after the elevator is powered off and leveled. When the elevator is leveled under the action of the emergency power drive device after being powered off, the landing door will be closed under the action of the self-closing force of the self-closing device, and the car door resistance is small and insufficient to resist the self-closing force, so that the car door is closed with the landing door under the driving of the door linkage device. In addition, for example, when the maintenance personnel open the landing door after the elevator is powered off and leveled, the maintenance personnel often need to use an additional device to overcome the self-closing force of the landing door self-closing device to keep the landing door and the car door open. In other words, the elevator itself cannot ensure that the door remains open after being opened.

[0005] In order to overcome the above problems, some known elevators use magnets to realize the elevator open door holding function, but the safety and reliability of such elevators is low and there are problems in electromagnetic compatibility.

[0006] Therefore, how to overcome the above problems has become a technical problem to be solved by those skilled in the art. SUMMARY

[0007] Therefore, the purpose of the present disclosure is to provide an open door holding device of an elevator and an elevator comprising the open door holding device, which adopts a mechanical device to ensure that the elevator door remains open after the elevator is powered off until the power is restored. In addition, the open door holding device is simple in structure, high in reliability and has no problems in electromagnetic compatibility.

[0008] The purpose of the present disclosure is achieved by the open door holding device and the elevator described below.

[0009] The present disclosure relates to a door opening holding device for an elevator for ensuring that a car door and a landing door of the elevator can be held open after one of the doors is opened by the elevator leveling and the car door and the landing door are linked by a door linkage device of the elevator. The door opening holding device comprises: a locking member provided on a frame structure of the elevator at a periphery of one of the car door and the landing door; and a locking cooperating member provided on one of the car door and the landing door, cooperating with the locking member and being movable with the associated one of the car door and the landing door between a locked position and an unlocked position, wherein, when one of the car door and the landing door is opened and the other of the car door and the landing door is opened by the door linkage device, the locking cooperating member is located at the locked position, the locking cooperating member is engaged with and locked by the locking member, so that the landing door is held open with the car door against the self-closing force of a self-closing device of the landing door without an external driving force; and when the locking cooperating member is located at the unlocked position, the locking cooperating member is unlocked by disengaging from the locking member.

[0010] In an embodiment, the locking member is provided on a door head at a top of the car door, and the locking cooperating member is provided on a door jamb of the car door and is movable with the car door between the locked position and the unlocked position.

[0011] In an embodiment, the elevator is capable of leveling under the drive of an emergency power drive device, and the car door is capable of being opened under the drive of the emergency power drive device.

[0012] In an embodiment, one of the locking member and the locking cooperating member comprises a clamping mechanism, and the other comprises a roller capable of being clamped by the clamping mechanism.

[0013] In an embodiment, the locking member comprises the clamping mechanism, and the locking cooperating member comprises the roller.

[0014] In an embodiment, the locking member comprises a main body fixed on the door head, and the clamping mechanism is provided on the main body of the locking member and extends to the door jamb.

[0015] In an embodiment, the clamping mechanism comprises: a first arm extending in an opening direction of the car door; a second arm capable of rotating relative to the first arm and comprising a recessed section facing the first arm; and a resilient member applying a resilient biasing force transverse to the opening direction to the second arm at the recessed section, wherein, when the car door is opened under the drive of an emergency power drive device, the roller is capable of being clamped within the clamping mechanism by overcoming the resilient biasing force and passing over the recessed section.

[0016] In an embodiment, the recessed section comprises a first inclined sub-section, a second inclined sub-section, and a flat sub-section between the first and second inclined sub-sections, wherein the first and second inclined sub-sections are each at least partially arcuate.

[0017] In an embodiment, the locking member comprises a body extending parallel to a door opening direction of the car door, and the roller is disposed on a first end of the body of the locking member proximate to the clamping mechanism.

[0018] In an embodiment, the locking member further comprises a further roller, which abuts against the first inclined sub-section when the locking member is in the locked position.

[0019] In an embodiment, the further roller is disposed on a second end of the body of the locking member distal from the clamping mechanism.

[0020] In an embodiment, the further roller is disposed on the door panel.

[0021] In an embodiment, the door opening retaining device comprises two locking members and two locking members disposed on both ends of the door head.

[0022] The present disclosure also relates to an elevator comprising an emergency power drive and a door opening retaining device as described above. BRIEF DESCRIPTION OF DRAWINGS

[0023] The advantages and objects of the present disclosure can be better understood from the following detailed description of the preferred embodiments of the present disclosure when read in light of the accompanying drawings. The drawings are not drawn to scale in order to better show the relationship between the components. In the drawings:

[0024] Figure 1 A schematic view of a door opening retaining device included in an elevator according to one embodiment of the present disclosure is schematically shown;

[0025] Figure 2 A partial schematic view of a door opening retaining device according to one embodiment of the present disclosure when the car door is closed is shown;

[0026] Figure 3 A partial schematic view of a door opening retaining device according to one embodiment of the present disclosure during opening of the car door is shown;

[0027] Figure 4 A partial schematic view of a door opening retaining device according to one embodiment of the present disclosure when the car door is fully open is shown;

[0028] Figure 5 A schematic view of a locking member of a door opening retaining device according to one embodiment of the present disclosure is shown.

[0029] Figure 6 a schematic view of a lock fitting of a door opening holding device according to one embodiment of the present disclosure is shown; and

[0030] Figure 7 a schematic view of a lock fitting of a door opening holding device according to one embodiment of the present disclosure is shown; and Figure 6 a schematic view of a lock fitting of a door opening holding device according to one embodiment of the present disclosure is shown; and DETAILED DESCRIPTION

[0031] Various embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. Here, it should be noted that in the drawings, the same reference numerals are assigned to components having substantially the same or similar structure and function, and repetitive descriptions thereof will be omitted. If not specifically stated, the terms "left," "right," "vertical," and the like in this document are relative to the drawings of the present disclosure, and are merely for describing the relative positions of the components, and do not limit the scope of the present disclosure. The description of "first" and its variants is merely for distinguishing the components, and does not limit the scope of the present disclosure, and the "first component" can be written as "second component" or the like without departing from the scope of the present disclosure.

[0032] The drawings of the present specification are schematic views that assist in explaining the concept of the present disclosure, and schematically represent the shapes of the parts and their mutual relationship.

[0033] Reference will now be made to Figures 1 to 7 Various embodiments of the present disclosure are described in detail.

[0034] Figure 1A portion of an elevator according to an embodiment of the present disclosure is shown, particularly the car door of the elevator car. The elevator also includes an emergency power drive and a door holding device 100. The emergency power drive can move the car to a landing and open the car door 200 after a power outage. The elevator car door 200 and the landing door (located outside the car door 200, not shown) are linked by a door coupling device. When the car door 200 opens under external driving force, the landing door opens against the self-closing force of its self-closing device under the action of the door coupling device. When the car door 200 closes under external driving force, the landing door closes under the self-closing force of its self-closing device. When the landing door opens under external force, the car door 200 opens under the action of the door coupling device. The door holding device can be used to ensure that the car door and landing door remain open after the elevator has landed and one of the elevator car door and landing door has opened, particularly to ensure that the elevator car door and landing door remain open after the elevator has landed under the drive of the emergency power drive. In other words, without external driving force, the landing door can overcome the self-closing force exerted on it by its own self-closing device and remain open together with the car door. After power is restored, the car door can close normally under electric drive, while the landing door can close under the action of its self-closing device. When both the car door and landing door are closed after the elevator has leveled, the landing door can open under external force, and the car door opens along with the landing door under the action of the door linkage device. Without external driving force, the aforementioned door holding device can keep both the landing door and the car door in the open state.

[0035] The elevator disclosed herein can avoid situations where the elevator leveling and opening the landing door results in the landing door closing, and the car door closing along with the landing door due to the door linkage device between the car door and the landing door, thus meeting the user's safety requirements.

[0036] like Figures 1 to 2 As shown, the door holding device 100 includes a locking member 1 and a locking mating member 2. The locking member 1 is disposed on the frame structure of the elevator surrounding the car door 200, for example, on the door header 201 at the top of the car door 200, which has a guide rail for the car door. The locking mating member 2 is disposed on the door mounting plate 202 of the car door 200, with the left and right car doors each having their own door mounting plate. The door mounting plate 202, driven by the elevator power unit, can move the corresponding car door along the guide rail on the door header. Figure 1 The door can be moved horizontally, for example, to the left or right, thereby opening or closing the car door. A locking element 1 can be installed at each end of the door head, and a locking mating element 2 is installed on the end of the corresponding door mounting plate near the corresponding locking element 1. Figure 1Only the locking member 1 and the locking cooperating member 2 near the left car door are shown in the figure, and those skilled in the art understand that the right car door can also be provided with the same or similar locking member 1 and locking cooperating member 2. For example, the left end of the door hanging plate of the left car door in the figure is provided with the locking cooperating member 2, and the right end of the door hanging plate of the right car door in the figure is also provided with the locking cooperating member 2. The following description is made with respect to the locking member 1 and the locking cooperating member 2 near one side car door.

[0037] The locking cooperating member 2 cooperates with the locking member 1 and can move with the car door 200 between the locked position and the unlocked position. The cooperation of the locking member 1 and the locking cooperating member 2 is arranged such that when the car door is opened under the drive of the emergency power drive device and drives the locking cooperating member 2 to move to the locked position, the locking cooperating member 2 engages and is locked by the locking member 1, so that the landing door remains open with the car door against the self-closing force of the self-closing device thereof; when the locking cooperating member 2 moves to the unlocked position, the locking cooperating member 2 is unlocked from the locking member 1, so that the car door can be closed and the landing door can be closed under the self-closing force of the self-closing device thereof.

[0038] In other embodiments, the locking member 1 and the locking cooperating member 2 can be arranged on the frame structure of the elevator located around the landing door, such as the door head at the top of the landing door.

[0039] The "frame structure located around the car door or the landing door" described herein refers to the frame structure located around the car door, which is relatively static during the movement of the car door and on which the guide rail, door machine and other devices for the landing door are arranged, or the frame structure located around the landing door, which is relatively static during the movement of the landing door and on which the guide rail and other devices for the car door are arranged, such as the door head at the top of each of them.

[0040] One of the locking member and the locking cooperating member includes a clamping mechanism, and the other includes a roller that can be clamped by the clamping mechanism. For example, as shown in Figure 3 the locking member 1 includes the clamping mechanism 10, and the locking cooperating member 2 includes the roller 20. Of course, in other embodiments, the locking cooperating member 2 can include the clamping mechanism, and the locking member 1 includes the roller, depending on the specific configuration of the elevator or the car door, the door head, the door hanging plate.

[0041] As shown in Figures 2 to 4 the locking member 1 includes a main body 11 fixed to the door head, and the clamping mechanism 10 is arranged on the main body 11 and extends to the door hanging plate 202. For example, the main body 11 is fixed to the edge of the end of the door head 201 by bolts. Specifically, the clamping mechanism can include a first arm 12, a second arm 13 and a resilient member 14. The first arm 12 generally extends along the opening direction of the car door 200 (i.e., Figure 2The second arm 13 can be pivoted relative to the first arm 12 and comprises a recessed section 15 facing the first arm 12. The resilient member 14 exerts a resilient biasing force on the second arm 13 at the recessed section 15 transverse (e.g. perpendicular) to the door opening direction. When the car door 200 is opened by the emergency power drive, the roller 20 can overcome the resilient biasing force and be clamped in the clamping mechanism over the recessed section 15, as shown in Figures 2 to 3 the process shown in Fig. 4.

[0042] For example, the resilient biasing force exerted by the resilient member 14 on the second arm 13 at the recessed section 15 can be greater than or equal to the self-closing force exerted by a self-closing device of a landing door of the elevator on the landing door, e.g. the self-closing force exerted by a weight device on the landing door. Moreover, the resilient biasing force exerted by the resilient member 14 is adjustable, so that the door opening retaining device of the present disclosure can be adapted to different applications, i.e. different car doors.

[0043] As shown in Figure 5 the first arm 12 can be integral with the main body 11, e.g. a bent plate-like structure. Moreover, the second arm 13 is connected to an intermediate extension 17 connected to the first arm 12 by a hinge member 16, which can be a vertical extension integral with the first arm 12.

[0044] For example, the resilient member 14 is a spring compressed between the second arm 13 and an end of a threaded rod 18 distal from the second arm 13, which is threaded through and mounted on the first arm 12 and the second arm 13.

[0045] Referring again to Figures 2 to 5 the recessed section 15 comprises a first inclined sub-section 151, a second inclined sub-section 152 and a flat sub-section 150 between the first and second inclined sub-sections 151, 152. The first and second inclined sub-sections 151, 152 are each at least partially arcuate, e.g. at least at the side adjacent to the flat sub-section 150. By providing the first inclined sub-section 151 at the entrance side of the recessed section 15, the roller 20 can easily enter the clamping mechanism. By providing the second inclined sub-section 152 at the exit side of the recessed section 15, the roller 20 can be fully locked in the clamping mechanism and not easily escape from the clamping mechanism.

[0046] As shown in Figures 6 to 7 the locking member 2 comprises a main body 21 extending parallel to the door opening direction of the elevator, e.g. having a plate-like structure. The roller 20 is provided on the first end of the main body 21 of the locking member 2 proximal to the clamping mechanism.

[0047] As shown in Figure 2As shown, when the car door is closed, the roller 20 can be located near the first inclined sub-section 151 of the recessed section 15. When the elevator is driven by the emergency power drive device after power failure, the elevator is leveled and the car door 200 is opened, and the roller 20 moves along with the car door in the opening direction. As shown, Figures 3 to 4 As shown, during the opening of the car door, the roller 20 passes through the first inclined sub-section 151, the flat sub-section 150 and the second inclined sub-section 152 of the recessed section 15 in sequence. As shown, Figure 4 As shown, when there is no external driving force acting on the car door, i.e. during power failure, the roller 20 is clamped by the clamping mechanism 10 under the elastic biasing force of the elastic member 14, so that the car door and the landing door remain open and will not be closed under the driving of the self-closing device of the landing door.

[0048] In addition, the locking member 2 further comprises another roller 22 which abuts against the first inclined sub-section 151 when the locking member 2 is located at the locking position. In this way, it can be ensured that the locking member 2 will not move too much towards the clamping mechanism, thus playing a limiting role. For example, the other roller 22 can be provided on the second end of the main body of the locking member away from the clamping mechanism. For example, the other roller 22 can be provided on the door hanging plate 202. In this case, the second end of the main body 21 of the locking member 2 away from the clamping mechanism is fixed to the door hanging plate 202 by, for example, screws, bolts, etc., the roller 20 is fixed to the first end of the door hanging plate 202 close to the clamping mechanism by, for example, screws, bolts, etc., and the other roller 22 is fixed to the door hanging plate 202 by, for example, screws, bolts, etc. In addition, the other roller 22 can be symmetrically arranged with the roller 20 on the door hanging plate 202, of course, an asymmetric design is also possible. By providing the other roller 22, the deformation of the car door can also be avoided when the car door is subjected to external forces, especially forces transverse to the opening direction and towards the door head 201, thereby improving the strength of the car door. In addition, the above-mentioned other roller 22 will not interfere with the movement of other elements, thus having less impact on the elevator.

[0049] The door opening and maintaining device of the present disclosure uses an additional mechanical structure to ensure that the elevator door remains open after power failure until power is restored, which is simple in structure, easy to implement, and does not need to change the existing mechanical structure of the elevator car door, thus being suitable for users to change the elevator on site according to needs. In addition, the door opening and maintaining device of the present disclosure does not use magnets, thus being high in reliability and having no electromagnetic compatibility problems.

[0050] The above disclosed technical features are not limited to the disclosed combinations with other features, and other combinations between technical features can be made by those skilled in the art according to the purpose of the application, so as to achieve the purpose of the present disclosure.

Claims

1. An elevator door holding device for ensuring that the car door (200) and the landing door remain open after the elevator has leveled and one of the car door (200) and the landing door, which are linked by a door coupling device, has opened, characterized in that, The door opening retaining device (100) includes: A locking element (1) is disposed on a frame structure of the elevator located around one of the car door (200) and the landing door; and A locking fitting (2) is disposed on one of the car door (200) and the landing door, cooperates with the locking fitting (1), and is movable between the locked position and the unlocked position with the associated one of the car door (200) and the landing door. When one of the car door (200) and the landing door opens and drives the other of the car door (200) and the landing door to open through the door linkage device, the locking engagement (2) is in the locked position, the locking engagement (2) engages with the locking member (1) and is locked by the locking member (1), so that without external driving force, the landing door overcomes the self-closing force of its self-closing device and remains open together with the car door (200); and When the locking engagement (2) is in the unlocked position, the locking engagement (2) disengages from the locking member (1) and is unlocked. One of the locking member (1) and the locking mating member (2) includes a clamping mechanism (10), and the other includes a roller (20) that can be clamped by the clamping mechanism (10). The elevator is capable of leveling with the floor under the drive of an emergency power drive device, and the car door (200) is capable of opening with the drive of the emergency power drive device. The clamping mechanism (10) includes: The first arm (12) extends along the opening direction of the car door (200); The second arm (13) is rotatable relative to the first arm (12) and includes a segment (15) recessed toward the first arm (12). In the locked position, the roller (20) passes over the recessed section (15) and is clamped in the clamping mechanism (10); in the unlocked position, the roller (20) disengages from the clamping mechanism (10).

2. The door opening retention device according to claim 1, characterized in that, The locking member (1) is disposed on the door head (201) at the top of the car door (200), and the locking fitting member (2) is disposed on the door hanging plate (202) of the car door (200) and can move with the car door (200) between the locked position and the unlocked position.

3. The door opening retention device according to claim 2, characterized in that, The locking member (1) includes the clamping mechanism (10), and the locking mating member (2) includes the roller (20).

4. The door opening retention device according to claim 3, characterized in that, The locking member (1) includes a main body (11) fixed to the door head (201), and the clamping mechanism (10) is disposed on the main body (11) of the locking member (1) and extends to the door hanging plate (202).

5. The door opening retention device according to claim 4, characterized in that, The clamping mechanism (10) includes: The elastic element (14) applies a resilient biasing force transverse to the opening direction to the second arm (13) at the recessed section (15). When the car door (200) is opened under the drive of the emergency power drive device, the roller (20) can overcome the elastic bias pressure and pass over the recessed section (15) and be clamped in the clamping mechanism (10).

6. The door-opening retaining device according to claim 5, characterized in that, The recessed section (15) includes a first inclined sub-section (151), a second inclined sub-section (152), and a flat sub-section (150) located between the first inclined sub-section (151) and the second inclined sub-section (152), wherein the first inclined sub-section (151) and the second inclined sub-section (152) are each at least partially arcuate.

7. The door opening retention device according to claim 6, characterized in that, The locking engagement member (2) includes a main body (21) extending parallel to the opening direction of the car door, and the roller (20) is disposed on the first end of the main body (21) of the locking engagement member (2) near the clamping mechanism (10).

8. The door opening retention device according to claim 7, characterized in that, The locking engagement (2) also includes an additional roller (22) that abuts against the first inclined sub-section (151) when the locking engagement (2) is in the locked position.

9. The door opening retention device according to claim 8, characterized in that, The additional roller (22) is located on the second end of the main body (21) of the locking engagement (2) away from the clamping mechanism (10).

10. The door opening retention device according to claim 8, characterized in that, The additional roller (22) is disposed on the door hanging plate (202).

11. The door opening retention device according to claim 2, characterized in that, The door opening retaining device includes two locking parts (1) and two locking mating parts (2) disposed at both ends of the door head (201).

12. An elevator, characterized in that, The elevator includes an emergency power drive and a door holding device (100) as claimed in any one of claims 1 to 11.

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