CN203545418U - Anti-falling safety protection device for elevator landing door - Google Patents
Anti-falling safety protection device for elevator landing door Download PDFInfo
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- CN203545418U CN203545418U CN201320665227.9U CN201320665227U CN203545418U CN 203545418 U CN203545418 U CN 203545418U CN 201320665227 U CN201320665227 U CN 201320665227U CN 203545418 U CN203545418 U CN 203545418U
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- 230000009471 action Effects 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
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- 238000010276 construction Methods 0.000 description 2
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Abstract
The utility model discloses an anti-falling safety protection device for an elevator landing door. The anti-falling safety protection device comprises a main fixing hook, a main lock hook, an auxiliary fixing hook and an auxiliary lock hook. The main lock hook is connected with a main lock hook unlocking device which can drive the main lock hook to rotate, so that the main hook and the main fixing hook are manually unlocked. A four-connecting-rod mechanism is arranged on one side of the main lock hook. A position retaining device is arranged between the main lock hook and the first connecting rod of the four-connecting-rod mechanism. The auxiliary lock hook is connected with an auxiliary lock hook unlocking device which can drive the auxiliary lock hook to rotate, so that the auxiliary lock hook and the auxiliary fixing hook are manually unlocked. According to the anti-falling safety protection device, a door lock of a mechanical structure is installed on the landing door; due to the two-lock-hook structure, the risk that the landing door is accidentally opened due to the fact that one lock loses efficacy can be avoided; due to secondary unlocking, the accident that a person falls in a shaftway is avoided.
Description
Technical field
The utility model relates to a kind of annex of elevator, is specifically related to a kind of anti-falling safe protection device of elevator door.
Background technology
Elevator install and servicing operations in, the frequency of utilization of layer door is higher, and the situation of the accident that meets accident in installation and servicing operations Zhong Men district is maximum, wherein the most serious accident surely belongs to party concerned and from layer doorway, falls the accident of hoistway.Trace it to its cause, when lift car is during in non-level position, elevator cab door cutter is in beyond the region of opening the door, if elevator door lock is artificially opened, or during absent minded or error, will crash into the accident of hoistway when the opening door lock because of party concerned.Do not have technically in the situation of good solution, each elevator company is in order to prevent the generation of such accident, can only take the method for formulating triangular key opening door operation rules or hang warning sign in triangular key to remind operating personal to take care, but effect is unsatisfactory.Therefore, avoid operating personal error to open layer door or to open the personal injury that layer door cause particularly important because of maloperation.
Chinese patent discloses multinomial elevator door fall arrest technology, and for example 2101020259016.1,0265955.2,200710131512.1,200610018725.9,200810204659.3,200820024369.6,200920033911.9 etc.These patents mainly add two kinds of modes of acousto-optic-electric warning by physical construction or machinery, can realize and after layer door opened certain Safe width, again pin layer door.But the transformation of the large multipair elevator door of these inventions is larger, there is subversive difference with traditional door lock structure in the form of some door lock, and cost compare is large, and feasibility is little; Itself there is the possibility of maloperation in some patent, thereby cannot reach the safety guard-safeguard object of anticipation; The 3rd, although realizing secondary unlocking, some patent reaches the object that safety is opened the door, but do not consider the requirement that could recover voluntarily after secondary unlocking, if be that party concerned is after opening secondary unlocking device, reset is forgotten in carelessness, can cause the operation exception of elevator, affects the normal use of elevator.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of anti-falling safe protection device of elevator door, and it can prevent that elevator door from opening the contingency that the personnel that cause fall hoistway and occurring.
For solving the problems of the technologies described above, the technical solution of the anti-falling safe protection device of the utility model elevator door is:
Comprise main stay hook 1, master lock hook 2, secondary stay hook 12, secondary lock hook 10b; Master lock hook 2 connects master lock hook opening device; Master lock hook opening device can drive master lock hook 2 to rotate, and realizes the manual unlocking of master lock hook 2 and main stay hook 1; One side of master lock hook 2 arranges four-bar linkage; Between master lock hook 2 and the first connecting rod of four-bar linkage, be provided with position holding device 19; Position holding device 19 coordinates with first connecting rod 4 and master lock hook 2, for remaining under the state of secondary lock hook 10b release, first connecting rod 4 with and the relative position of master lock hook 2; The two ends of four-bar linkage first connecting rod 4 are respectively arranged with the first croquet 20, the second croquet 5, are fixedly installed secondary lock hook 10b on the third connecting rod of four-bar linkage; When car opens the door a cutter 16 clamping the first croquets 20 and the second croquet 5, first connecting rod 4 to four-bar linkage provides external force, make parallel motion, drive the secondary lock hook 10b on third connecting rod 10a to rotate, realize the automatic unlocking of secondary lock hook 10b and secondary stay hook 12; Secondary lock hook 10b auxiliary connection latch hook opening device; Secondary lock hook opening device can drive secondary lock hook 10b to rotate, and realizes the manual unlocking of secondary lock hook 10b and secondary stay hook 12.
Described master lock hook opening device drives 2 rotations of master lock hook, makes master lock hook 2 and main stay hook 1 release; Connecting rod mechanism and on secondary lock hook 10b still keep angle at closing time, there is not release action in secondary lock hook 10b; Owing to having certain horizontal throw between secondary lock hook 10b and secondary stay hook 12, layer every fanned the one section of safety distance that can be opened, until secondary lock hook 10b and secondary stay hook 12 are sealed, completes first step unlocking operation; Pull the second steel rope 17, make secondary lock hook 10b rotation, secondary lock hook 10b and 12 releases of secondary stay hook, continue layer every fan to be opened to door opening width, and layer door opened completely, completes second step unlocking operation.
The safety distance that described secondary lock hook 10b and secondary stay hook 12 gap length are in the horizontal direction 1/2; Described safety distance is not more than 100mm.
Described master lock hook opening device is the first steel rope 15, and master lock hook 2 connects one end of the first steel rope 15, and the other end of the first steel rope 15 is connected with triangular key tripper; Or described master lock hook opening device is push rod 18, the bottom of master lock hook 2 connects one end of push rod 18, and the other end of push rod 18 connects triangular key tripper; Rotary triangle key-unlocking, makes the first steel rope 15 or push rod 18 drive master lock hook 2 to rotate.
Described secondary lock hook opening device is the second steel rope 17; Secondary lock hook 10b connects one end of the second steel rope 17, and the other end of the second steel rope 17 is connected to layer every seam place.
Distance between the other end of described the second steel rope 17 and layer door ground is 100～1500mm.
The below of described master lock hook 2 is provided with master lock hook inhibiting device 21; Master lock hook inhibiting device 21 is for retraining the rotating range of master lock hook 2, and when locked position is arrived in 2 contrarotations of master lock hook, master lock hook inhibiting device 21 stops operating master lock hook 2.
The place ahead of the third connecting rod 10a of described four-bar linkage is provided with connecting rod mechanism inhibiting device 14; Connecting rod mechanism inhibiting device 14 can constrained linkage mechanism contrarotation position.
Described four-bar linkage is comprised of with third connecting rod 10a first connecting rod 4, second connecting rod 8, and one end of first connecting rod 4 connects described the first croquet 20, the first croquets 20 and is connected with the first rotating shaft 7; The first rotating shaft 7 is fixedly installed on layer door hanging plate 13; The other end of first connecting rod 4 connects described the second croquet 5; The second croquet 5 is connected with the second rotating shaft 6; The second croquet 5 connects one end of second connecting rod 8, and the other end of second connecting rod 8 connects the 3rd rotating shaft 9; The 3rd rotating shaft 9 connects one end of third connecting rod 10a, and the other end of third connecting rod 10a connects the 4th rotating shaft 11; The 4th rotating shaft 11 is fixed on layer door hanging plate 13.
The top of described master lock hook 2 connects reset attachment 3, and reset attachment 3 can provide reset force for master lock hook 2, makes master lock hook 2 and main stay hook 1 recover sealed.
The technique effect that the utility model can reach is:
The utility model is the physical construction door lock being installed on layer door, and its double-lock hook structure can avoid one of them inefficacy to cause the unexpected risk of opening of layer door, and by secondary, unblanks to prevent from falling the unexpected of hoistway and occur.
The utility model simple installation, less to other dynamic component structural modification that is associated, and can after manual secondary is unblanked, realize automatically reset function.The utility model is conducive to old ladder transformation, is a kind of simple door lock structure efficiently.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the schematic diagram of the anti-falling safe protection device of the utility model elevator door; Now layer door is in the state of closing the door;
Fig. 2 is schematic diagram of mechanism of the present utility model;
Fig. 3 is the schematic diagram of layer door of the present utility model in normal door state;
The view of manual first step unlocking operation when Fig. 4 is the utility model maintenance;
The view of manual second step unlocking operation when Fig. 5 is the utility model maintenance.
Description of reference numerals in figure:
1 is main stay hook, and 2 is master lock hook,
3 is spring reverse motion, and 4 is first connecting rod,
5 is the second croquet, and 6 is the second rotating shaft,
7 is the first rotating shaft, and 8 is second connecting rod,
9 is the 3rd rotating shaft, and 10a is third connecting rod,
10b is secondary lock hook, and 11 is the 4th rotating shaft,
12 is secondary stay hook, and 13 is layer door hanging plate,
14 is connecting rod mechanism inhibiting device, and 15 is the first steel rope,
16 is a car cutter that opens the door, and 17 is the second steel rope,
18 is push rod, and 19 is position holding device,
20 is the first croquet, and 21 is master lock hook inhibiting device.
The specific embodiment
As shown in Figure 1 and Figure 2, the anti-falling safe protection device of the utility model elevator door, comprises main stay hook 1, master lock hook 2, spring reverse motion 3, first connecting rod 4, the second croquet 5, the second rotating shaft 6, the first rotating shaft 7, second connecting rod 8, the 3rd rotating shaft 9, third connecting rod 10a, secondary lock hook 10b, the 4th rotating shaft 11, secondary stay hook 12, connecting rod mechanism inhibiting device 14, the first steel rope 15, the second steel rope 17, push rod 18, position holding device 19, the first croquet 20, master lock hook inhibiting device 21;
The front end of master lock hook 2 is provided with hook portion, and the hook portion of master lock hook 2 is for being connected and fixed the main stay hook 1 being arranged on layer door frame;
The rear end of master lock hook 2 connects one end of the first steel rope 15, and the other end of the first steel rope 15 is connected with triangular key tripper; Clickwise triangular key tripper, the first steel rope 15 can drive master lock hook 2 clickwises;
The bottom of master lock hook 2 connects one end of push rod 18, and the other end of push rod 18 connects triangular key tripper; Clickwise triangular key tripper, push rod 18 can drive master lock hook 2 to clockwise rotate;
The below of master lock hook 2 is provided with master lock hook inhibiting device 21; Master lock hook inhibiting device 21 is fixed on layer door hanging plate 13; Master lock hook inhibiting device 21 is for retraining the rotating range of master lock hook 2, and when master lock hook 2 left-hand revolutions are during to locked position (being level attitude shown in Fig. 1), master lock hook inhibiting device 21 stops operating master lock hook 2;
One end of the top linking springs reset attachment 3 of master lock hook 2, the other end of spring reverse motion 3 is fixedly attached on layer door hanging plate 13; Spring reverse motion 3 can provide reset force for master lock hook 2;
One side of master lock hook 2 arranges first connecting rod 4; Between master lock hook 2 and first connecting rod 4, be provided with position holding device 19; Position holding device 19 is for keeping the position of master lock hook 2;
One end of first connecting rod 4 connects the first croquet 20, the first croquets 20 and is connected with the first rotating shaft 7; The first rotating shaft 7 is fixedly installed on layer door hanging plate 13; The other end of first connecting rod 4 connects the second croquet 5;
The second croquet 5 is connected with the second rotating shaft 6; The second croquet 5 connects one end of second connecting rod 8, and the other end of second connecting rod 8 connects the 3rd rotating shaft 9;
The 3rd rotating shaft 9 connects one end of third connecting rod 10a, and the other end of third connecting rod 10a connects the 4th rotating shaft 11; The 4th rotating shaft 11 is fixed on layer door hanging plate 13;
First connecting rod 4, second connecting rod 8 form connecting rod mechanism with third connecting rod 10a;
Under normal door state, an open the door cutter 16 of car clamps the first croquet 20 and the second croquets 5, make first connecting rod 4 around the first rotating shaft 7 clickwises, first connecting rod 4 drives master lock hook 2 rotation together by position holding device 19, and keeps master lock hook 2 constant with the relative angle of first connecting rod 4;
Under first step released state, clickwise triangular key tripper, the first steel rope 15 or push rod 18 drive master lock hook 2 clickwises, and now master lock hook 2 can not drive first connecting rod 4 rotations;
On third connecting rod 10a, be fixedly installed secondary lock hook 10b; On layer door frame, be fixedly installed secondary stay hook 12; Secondary lock hook 10b and secondary stay hook 12 keep certain spacing, the safety distance that this gap length is 1/2 in the horizontal direction; Safety distance is not more than 100mm;
The place ahead of third connecting rod 10a is provided with connecting rod mechanism inhibiting device 14; Connecting rod mechanism inhibiting device 14 is fixed on layer door hanging plate 13; Connecting rod mechanism inhibiting device 14 can constrained linkage mechanism left-hand revolution position;
Distance between the other end of the second steel rope 17 and layer door ground is 100～1500mm.
Principle of work of the present utility model is as follows:
When elevator door is when closing the door state, master lock hook 2 is sealed with main stay hook 1, and master lock hook 2 is acted on by master lock hook inhibiting device 21 and spring reverse motion 3 simultaneously, as shown in Figure 1; Now layer door hanging plate 13 cannot be opened layer every fan, and connecting rod mechanism is limited in secondary lock hook 10b on connecting rod mechanism inhibiting device 14, in locking states;
When elevator door is during in normal door state, an open the door cutter 16 of car clamps the first croquet 20 and the second croquets 5, drive first connecting rod 4 clickwise one angles, connecting rod mechanism drives secondary lock hook 10b clickwise, make secondary lock hook 10b and the abundant release of secondary stay hook 12, make successfully opened door leaf of layer door hanging plate 13, as shown in Figure 3 (now position holding device 19 maintenance master lock hooks 2 are constant with the relative angle of first connecting rod 4);
Manually opened layer door in two steps in maintenance process; The first step, clickwise triangular key tripper, the first steel rope 15 or push rod 18 drive master lock hook 2 clickwises, make master lock hook 2 and the complete release of main stay hook 1; Because master lock hook 2 can not drive first connecting rod 4 rotation, connecting rod mechanism and on secondary lock hook 10b still keep angle at closing time, there is not release action in secondary lock hook 10b; Owing to having certain horizontal throw between secondary lock hook 10b and secondary stay hook 12, layer every fanned the one section of safety distance that can be opened, until secondary lock hook 10b contacts (sealed) with secondary stay hook 12, now completed first step unlocking operation, as shown in Figure 4;
Complete after first step release action, service personnel is observed after the interior car position of hoistway, can proceed second step release action;
Second step, pulls the second steel rope 17, makes secondary lock hook 10b clickwise, makes secondary lock hook 10b and the abundant release of secondary stay hook 12, continues layer every fan to be opened to door opening width, and layer door opened completely, has completed second step unlocking operation, as shown in Figure 5;
Complete after service work, layer every fan is owing to automatically closing under Action of Gravity Field or other External Force Acting, and now, master lock hook 2 recovers locked state by self gravitation and spring reverse motion 3, completes auto-reset function.
More than, by embodiment, the utility model is had been described in detail, but these not form restriction of the present utility model.In the situation that not departing from the utility model principle, those skilled in the art also can make many distortion and improvement, the version of spring reverse motion, master's (pair) latch hook and tripper especially, and these also should be considered as protection domain of the present utility model.
All transmission devices of the present utility model can use sealed bearings, and the bearing of design meets design life requirement simultaneously; Motion between first connecting rod, second connecting rod and third connecting rod there will not be stuck and wearing and tearing like this, can be because of impacts such as dust, moisture yet, thereby cause the dumb phenomenon of door lock assembly, the motion between first connecting rod, second connecting rod and third connecting rod is very steady simultaneously.
The utility model is simple and reliable for structure, cost is low, and care and maintenance cost is low, and running noises is little.Meanwhile, owing to thering is identical interchangeability on the utility model structure and tradition stratum door lock apparatus structure, therefore can be for the transformation to existing inlay door locking device.
Claims (10)
1. an anti-falling safe protection device for elevator door, is characterized in that: comprise main stay hook (1), master lock hook (2), secondary stay hook (12), secondary lock hook (10b);
Master lock hook (2) connects master lock hook opening device; Master lock hook opening device can drive master lock hook (2) to rotate, and realizes the manual unlocking of master lock hook (2) and main stay hook (1);
One side of master lock hook (2) arranges four-bar linkage; Between the first connecting rod (4) of master lock hook (2) and four-bar linkage, be provided with position holding device (19); Position holding device (19) coordinates with first connecting rod (4) and master lock hook (2), for remaining under the state of secondary lock hook (10b) release, first connecting rod (4) with and the relative position of master lock hook (2);
The two ends of four-bar linkage first connecting rod (4) are respectively arranged with the first croquet (20), the second croquet (5), are fixedly installed secondary lock hook (10b) on the third connecting rod of four-bar linkage (10a);
When car opens the door a cutter (16) clamping the first croquet (20) and the second croquet (5), first connecting rod (4) to four-bar linkage provides external force, make parallel motion, drive the secondary lock hook (10b) on third connecting rod to rotate, realize the automatic unlocking of secondary lock hook (10b) and secondary stay hook (12);
Secondary lock hook (10b) auxiliary connection latch hook opening device; Secondary lock hook opening device can drive secondary lock hook (10b) to rotate, and realizes the manual unlocking of secondary lock hook (10b) and secondary stay hook (12).
2. the anti-falling safe protection device of elevator door according to claim 1, is characterized in that: described master lock hook opening device drives master lock hook (2) rotation, makes master lock hook (2) and main stay hook (1) release; Connecting rod mechanism and on secondary lock hook (10b) still keep angle at closing time, there is not release action in secondary lock hook (10b); Owing to having certain horizontal throw between secondary lock hook (10b) and secondary stay hook (12), layer every fanned the one section of safety distance that can be opened, until secondary lock hook (10b) is sealed with secondary stay hook (12), completes first step unlocking operation;
Pull the second steel rope (17), make secondary lock hook (10b) rotation, secondary lock hook (10b) and secondary stay hook (12) release, continue layer every fan to be opened to door opening width, and layer door opened completely, completes second step unlocking operation.
3. the anti-falling safe protection device of elevator door according to claim 2, is characterized in that: the safety distance that described secondary lock hook (10b) and secondary stay hook (12) gap length are in the horizontal direction 1/2; Described safety distance is not more than 100mm.
4. the anti-falling safe protection device of elevator door according to claim 1, it is characterized in that: described master lock hook opening device is the first steel rope (15), master lock hook (2) connects one end of the first steel rope (15), and the other end of the first steel rope (15) is connected with triangular key tripper; Or described master lock hook opening device is push rod (18), the bottom of master lock hook (2) connects one end of push rod (18), and the other end of push rod (18) connects triangular key tripper; Rotary triangle key-unlocking, makes the first steel rope (15) or push rod (18) drive master lock hook (2) to rotate.
5. the anti-falling safe protection device of elevator door according to claim 1, is characterized in that: described secondary lock hook opening device is the second steel rope (17); Secondary lock hook (10b) connects one end of the second steel rope (17), and the other end of the second steel rope (17) is connected to layer every seam place.
6. the anti-falling safe protection device of elevator door according to claim 5, is characterized in that: the distance between the other end of described the second steel rope (17) and layer door ground is 100～1500mm.
7. the anti-falling safe protection device of elevator door according to claim 1, is characterized in that: the below of described master lock hook (2) is provided with master lock hook inhibiting device (21); Master lock hook inhibiting device (21) is for retraining the rotating range of master lock hook (2), and when locked position is arrived in master lock hook (2) contrarotation, master lock hook inhibiting device (21) stops operating master lock hook (2).
8. the anti-falling safe protection device of elevator door according to claim 1, is characterized in that: the place ahead of the third connecting rod of described four-bar linkage (10a) is provided with connecting rod mechanism inhibiting device (14); Connecting rod mechanism inhibiting device (14) can constrained linkage mechanism contrarotation position.
9. the anti-falling safe protection device of elevator door according to claim 1, it is characterized in that: described four-bar linkage is comprised of with third connecting rod (10a) first connecting rod (4), second connecting rod (8), one end of first connecting rod (4) connects described the first croquet (20), and the first croquet (20) is connected with the first rotating shaft (7); The first rotating shaft (7) is fixedly installed on layer door hanging plate (13); The other end of first connecting rod (4) connects described the second croquet (5);
The second croquet (5) is connected with the second rotating shaft (6); The second croquet (5) connects one end of second connecting rod (8), and the other end of second connecting rod (8) connects the 3rd rotating shaft (9);
The 3rd rotating shaft (9) connects one end of third connecting rod (10a), and the other end of third connecting rod (10a) connects the 4th rotating shaft (11); The 4th rotating shaft (11) is fixed on layer door hanging plate (13).
10. the anti-falling safe protection device of elevator door according to claim 1; it is characterized in that: the top of described master lock hook (2) connects reset attachment (3); reset attachment (3) can provide reset force for master lock hook (2), makes master lock hook (2) and main stay hook (1) recover sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320665227.9U CN203545418U (en) | 2013-10-25 | 2013-10-25 | Anti-falling safety protection device for elevator landing door |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320665227.9U CN203545418U (en) | 2013-10-25 | 2013-10-25 | Anti-falling safety protection device for elevator landing door |
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| CN203545418U true CN203545418U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320665227.9U Expired - Lifetime CN203545418U (en) | 2013-10-25 | 2013-10-25 | Anti-falling safety protection device for elevator landing door |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829704A (en) * | 2017-03-28 | 2017-06-13 | 日立电梯（中国）有限公司 | Elevator door opening protecting apparatus and elevator door opening method |
| CN107522076A (en) * | 2016-06-22 | 2017-12-29 | 富士达株式会社 | Elevator door engagement device and elevator |
| WO2018192812A1 (en) | 2017-04-19 | 2018-10-25 | Inventio Ag | Warning device for an elevator |
| CN109441248A (en) * | 2018-11-28 | 2019-03-08 | 苏州市职业大学 | The split type single layers apart door lock of elevator |
| CN109436996A (en) * | 2018-11-28 | 2019-03-08 | 苏州市职业大学 | The split type double layers apart door locks of elevator |
| CN109436997A (en) * | 2018-11-28 | 2019-03-08 | 苏州市职业大学 | Elevator fission push type layer door lock |
| CN109436999A (en) * | 2018-11-28 | 2019-03-08 | 苏州市职业大学 | Elevator link-type layer door lock |
| US10676321B2 (en) | 2016-06-08 | 2020-06-09 | Otis Elevator Company | Maintenance safety device for elevator and a operation method thereof |
| CN111634773A (en) * | 2019-03-01 | 2020-09-08 | 上海三菱电梯有限公司 | Safety system for small door lock of elevator landing door frame |
| CN113086816A (en) * | 2021-03-31 | 2021-07-09 | 日立电梯（中国）有限公司 | Secondary protection device for opening elevator landing door |
| CN113682928A (en) * | 2021-08-25 | 2021-11-23 | 日立电梯（中国）有限公司 | Elevator layer door lock structure |
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2013
- 2013-10-25 CN CN201320665227.9U patent/CN203545418U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10676321B2 (en) | 2016-06-08 | 2020-06-09 | Otis Elevator Company | Maintenance safety device for elevator and a operation method thereof |
| CN107522076A (en) * | 2016-06-22 | 2017-12-29 | 富士达株式会社 | Elevator door engagement device and elevator |
| CN107522076B (en) * | 2016-06-22 | 2023-12-08 | 富士达株式会社 | Door locking device for elevator and elevator |
| CN106829704A (en) * | 2017-03-28 | 2017-06-13 | 日立电梯（中国）有限公司 | Elevator door opening protecting apparatus and elevator door opening method |
| WO2018192812A1 (en) | 2017-04-19 | 2018-10-25 | Inventio Ag | Warning device for an elevator |
| CN109436999A (en) * | 2018-11-28 | 2019-03-08 | 苏州市职业大学 | Elevator link-type layer door lock |
| CN109436997A (en) * | 2018-11-28 | 2019-03-08 | 苏州市职业大学 | Elevator fission push type layer door lock |
| CN109436996A (en) * | 2018-11-28 | 2019-03-08 | 苏州市职业大学 | The split type double layers apart door locks of elevator |
| CN109436999B (en) * | 2018-11-28 | 2023-11-07 | 苏州市职业大学 | Elevator connecting rod type landing door lock |
| CN109441248A (en) * | 2018-11-28 | 2019-03-08 | 苏州市职业大学 | The split type single layers apart door lock of elevator |
| CN109441248B (en) * | 2018-11-28 | 2024-04-05 | 苏州市职业大学 | Split type single-unlocking door lock of elevator |
| CN111634773A (en) * | 2019-03-01 | 2020-09-08 | 上海三菱电梯有限公司 | Safety system for small door lock of elevator landing door frame |
| CN113086816A (en) * | 2021-03-31 | 2021-07-09 | 日立电梯（中国）有限公司 | Secondary protection device for opening elevator landing door |
| CN113682928A (en) * | 2021-08-25 | 2021-11-23 | 日立电梯（中国）有限公司 | Elevator layer door lock structure |
| CN113682928B (en) * | 2021-08-25 | 2023-03-07 | 日立电梯（中国）有限公司 | Elevator layer door lock structure |
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Granted publication date: 20140416 |