CN210340032U - Elevator layer door pit unlocking mechanism - Google Patents
Elevator layer door pit unlocking mechanism Download PDFInfo
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- CN210340032U CN210340032U CN201921239139.6U CN201921239139U CN210340032U CN 210340032 U CN210340032 U CN 210340032U CN 201921239139 U CN201921239139 U CN 201921239139U CN 210340032 U CN210340032 U CN 210340032U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000004323 axial length Effects 0.000 claims description 6
- 241000282326 Felis catus Species 0.000 abstract description 9
- 238000009434 installation Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses an elevator landing door pit unlocking mechanism, wherein a top plate passes through a lower horizontal plane and an upper horizontal plane of a bracket and a guide hole of a horizontal bending surface of a door head body and can move up and down along the guide hole; the supporting shaft is vertically fixed on the vertical surface of the bracket; the sliding bearing is sleeved on the supporting shaft and is positioned between the top plate and the vertical surface of the bracket; the transmission rod is fixed on the top plate and is positioned between the sliding bearing and the horizontal plane on the bracket; one end of the pit unlocking rope is fixed on the transmission rod, and the pit unlocking rope bypasses the door closing side of the sliding bearing and then is routed towards the door opening side of the sliding bearing along the upper part of the horizontal bending surface of the door head body; in a natural state, a gap is formed between the lower end of the top plate and the head of the lock hook body; when the top plate is pulled by the pit unlocking rope to move downwards, the lower end of the top plate can press down the head of the lock hook body to enable the lock hook body to rotate around the lock hook rotating shaft to open the landing door lock. The utility model discloses an elevator layer door pit release mechanism can be applicable to layer door left side and right side simultaneously and set up the pit cat ladder to simple structure is convenient for at pit release elevator layer door.
Description
Technical Field
The utility model relates to an elevator layer door gear, in particular to elevator layer door pit release mechanism.
Background
The new national standard 7588.1 provides regulation in elevator manufacturing and installation safety code: if there is no door to the pit access, but through the landing door, pit ladders should be provided which can be arranged on both sides of the landing door and which should be safely accessible within a height of 1.80m and a maximum horizontal distance of 0.80m for the door lock, or the persons in the pit can open the landing door by means of permanently arranged devices.
At present, the pit unlocking mechanism of the upper-layer door system in the elevator market generally adopts a structure as shown in fig. 1, the lower end of a pit unlocking rope 96 and the bottom of a layer door are bent and locked by bolts, the upper end of the pit unlocking rope 96, the lower end of a triangular lock unlocking rope 93 and a triangular lock locking plate 95 are locked by the bolts, and the upper end of the triangular lock unlocking rope 93 and a lock hook body 91 are locked by the bolts. The working principle is as follows: an elevator installer or a maintenance person stands in the pit and touches the pit unlocking rope 96 through the pit ladder stand, the pit unlocking rope 96 pulls the lock hook body 91 to rotate through the connected triangular lock unlocking rope 93, and the lock hook body 91 is separated from the support, so that the landing door lock is opened. The pit unlocking mode limits the arrangement of the pit ladder stand in the pit, the ladder stand of the pit unlocking rope mechanism needs to be arranged on the wall surface right below the entrance/exit landing sill, so that the installation or maintenance personnel can be ensured to safely touch the pit unlocking rope 96 by hands, and the position of the pit ladder stand does not conform to the arrangement regulation of the ladder stand in the regulation project of elevator manufacturing and installation safety standard of new national standard 7588.1. If the cat ladder sets up in access & exit both sides, be unfavorable for the pit unblock again, open layer door, operate improperly even, probably cause operating personnel to be injured.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an elevator layer door pit release mechanism, can be applicable to layer door left side and right side simultaneously and set up the pit cat ladder to simple structure is convenient for at pit release elevator layer door.
In order to solve the technical problem, the elevator landing door pit unlocking mechanism provided by the utility model comprises a bracket 1, a sliding bearing 2, a top plate 3 and a pit unlocking rope 11;
the door head body 8 of the elevator landing door is an L-type bending surface bent forwards;
the lock hook body 81 is pivotally fixed on the vertical bending surface of the door head body 8 through a lock hook rotating shaft;
when the head of the lock hook body 81 is pressed downwards to enable the lock hook body 81 to rotate around the lock hook rotating shaft, the door lock of the landing door can be opened;
the bracket 1 is in a [ -shape;
the lower horizontal plane of the bracket 1 is fixed on the horizontal bending plane of the door head body 8, and the opening side of the bracket 1 is forward;
the lower horizontal plane and the upper horizontal plane of the bracket 1 and the horizontal bending plane of the door head body 8 are respectively provided with a guide hole corresponding to the same vertical line position;
the top plate 3 passes through the guide holes of the lower horizontal plane and the upper horizontal plane of the bracket 1 and the horizontal bending plane of the door head body 8 and can move up and down along the guide holes;
in the up-down stroke of the top plate 3, the upper end of the top plate 3 is higher than the upper horizontal plane of the bracket 1, and the lower end of the top plate 3 is lower than the horizontal bending plane of the door head body 8;
a supporting shaft 20 is vertically fixed on the vertical surface of the bracket 1;
the sliding bearing 2 is sleeved on the supporting shaft 20, and the sliding bearing 2 is positioned between the top plate 3 and the vertical surface of the support 1 and can rotate around the supporting shaft 20;
a transmission rod 12 is fixed on the top plate 3, and the transmission rod 12 is positioned between the sliding bearing 2 and the upper horizontal surface of the bracket 1;
one end of the pit unlocking rope 11 is fixed on the transmission rod 12 and is routed towards the opening side of the sliding bearing 2 along the upper part of the horizontal bending surface of the door head body 8 after bypassing the closing side of the sliding bearing 2;
in a natural state of the top plate 3, a gap is formed between the lower end of the top plate 3 and the head of the lock hook body 81;
when the top plate 3 is pulled by the pit unlocking rope 11 to move downwards for a distance exceeding a set distance, the lower end of the top plate 3 presses down the head of the lock hook body 81 to enable the lock hook body 81 to rotate around the lock hook rotating shaft to open the landing door lock.
Preferably, the top plate 3 is provided with a limit waist-shaped hole in the vertical direction;
the front end of the supporting shaft 20 extends into the limit waist-shaped hole.
Preferably, a return spring 7 is arranged between the support 1 and the top plate 3;
when the top plate 3 is in a natural state, the return spring 7 enables a gap to be formed between the lower end of the top plate 3 and the head of the locking hook body 81;
when the top plate 3 is pulled downwards by the pit unlocking rope 11, the top plate 3 moves downwards and deforms the return spring 7.
Preferably, the return spring 7 is a coil spring;
the upper end of the return spring 7 is fixed on the upper horizontal plane of the bracket 1, and the lower end of the return spring is fixed on the top plate 3;
the return spring 7 is deformed by elongation when the top plate 3 moves downward.
Preferably, the return spring 7 is located on the opposite side of the top plate 3 from the sliding bearing 2.
Preferably, the lower end of the return spring 7 is fixed on the top plate 3 through a bolt or a screw.
Preferably, the upper end of the return spring 7 abuts against an upper end return component fixed with the top plate 3, and the lower end abuts against a lower end return component fixed with the bracket 1;
when the top plate 3 moves downwards, the return spring 7 is compressed and deformed.
Preferably, the lower end reset component is fixed on the vertical surface of the bracket 1.
Preferably, the upper horizontal surface of the bracket 1 is used as a lower end reset component.
Preferably, the sliding bearing 2 of the door head body 8 is fixedly provided with a guide pulley at the door opening side end;
the pit unlocking rope 11 is arranged along the upper part of the horizontal bending surface of the door head body 8 towards the door opening side of the sliding bearing 2, and then bypasses the guide pulley, and the other end of the pit unlocking rope is fixed on the wall surface or the sill of the hoistway.
Preferably, a wire clamp is fixed on the horizontal bending surface of the door head body 8 at the door opening side of the sliding bearing 2;
the pit unlocking rope 11 is routed along the upper side of the horizontal bending surface of the door head body 8 towards the door opening side of the sliding bearing 2, penetrates through the wire clamp and then bypasses the guide pulley.
Preferably, the axial length of the sliding bearing 2 is 0.2mm to 2mm shorter than the distance between the top plate 3 and the vertical surface of the bracket 1;
the axial length of the slide bearing 2 is greater than 1 cm.
Preferably, the head of the lock hook body 81 is provided with an arc surface;
and the lower end of the top plate 3 and the arc surface of the head of the lock hook body 81 have a clearance of 1mm to 2mm in the natural state of the top plate 3.
Preferably, the transmission rod 12 is a cross-recessed pan head screw;
the lower horizontal plane of the bracket 1 is fixed to the horizontal bending plane of the door head body 8 through bolts.
The utility model discloses an elevator layer door pit unlocking mechanism, independently assemble on elevator layer door head body 8, the pit cat ladder sets up when the left side, pit unlocking rope 11 winds around the slide bearing right side wire winding left, the pit cat ladder sets up when the right side, pit unlocking rope 11 winds around the slide bearing left side wire winding right, operating personnel stimulates pit unlocking rope 11, just can realize elevator layer lock unblock action simply reliably, the layer door left side and the right side that can be applicable to new national standard well regulation simultaneously set up the pit cat ladder, and simple structure, be convenient for at pit unlocking elevator layer door.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the present invention are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a conventional pit unlocking mechanism;
fig. 2 is a schematic view of the overall structure of an embodiment of an elevator landing door pit unlocking mechanism of the present invention;
FIG. 3 is an enlarged perspective view of FIG. 2 taken at the dotted circle;
FIG. 4 is an enlarged front view of FIG. 2 taken at the dotted circle;
FIG. 5 is an enlarged left side view of FIG. 2 taken along the dashed circle;
FIG. 6 is a front view of an embodiment of an elevator landing door pit unlocking mechanism employing compression set return springs;
fig. 7 is a left side view of an embodiment of an elevator landing door pit unlocking mechanism employing a compression set return spring.
Description of the reference numerals
1, a bracket; 2, a sliding bearing; 3, a top plate; 11 pit unlocking rope; 8 door head body; 81 a lock hook body; 20 supporting the shaft; 12 a transmission rod; 7 a return spring.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example one
As shown in fig. 2, 3, 4 and 5, the elevator landing door pit unlocking mechanism comprises a support 1, a sliding bearing 2, a top plate 3 and a pit unlocking rope 11;
the door head body 8 of the elevator landing door is an L-type bending surface bent forwards;
the lock hook body 81 is pivotally fixed on the vertical bending surface of the door head body 8 through a lock hook rotating shaft;
when the head of the lock hook body 81 is pressed downwards to enable the lock hook body 81 to rotate around the lock hook rotating shaft, the door lock of the landing door can be opened;
the bracket 1 is in a [ -shape;
the lower horizontal plane of the bracket 1 is fixed on the horizontal bending plane of the door head body 8, and the opening side of the bracket 1 is forward;
the lower horizontal plane and the upper horizontal plane of the bracket 1 and the horizontal bending plane of the door head body 8 are respectively provided with a guide hole corresponding to the same vertical line position;
the top plate 3 passes through the guide holes of the lower horizontal plane and the upper horizontal plane of the bracket 1 and the horizontal bending plane of the door head body 8 and can move up and down along the guide holes;
in the up-down stroke of the top plate 3, the upper end of the top plate 3 is higher than the upper horizontal plane of the bracket 1, and the lower end of the top plate 3 is lower than the horizontal bending plane of the door head body 8;
a supporting shaft 20 is vertically fixed on the vertical surface of the bracket 1;
the sliding bearing 2 is sleeved on the supporting shaft 20, and the sliding bearing 2 is positioned between the top plate 3 and the vertical surface of the support 1 and can rotate around the supporting shaft 20;
a transmission rod 12 is fixed on the top plate 3, and the transmission rod 12 is positioned between the sliding bearing 2 and the upper horizontal surface of the bracket 1;
one end of the pit unlocking rope 11 is fixed on the transmission rod 12 and is routed towards the opening side of the sliding bearing 2 along the upper part of the horizontal bending surface of the door head body 8 after bypassing the closing side of the sliding bearing 2;
in a natural state of the top plate 3, a gap is formed between the lower end of the top plate 3 and the head of the lock hook body 81;
when the top plate 3 is pulled by the pit unlocking rope 11 to move downwards for a distance exceeding a set distance, the lower end of the top plate 3 presses down the head of the lock hook body 81 to enable the lock hook body 81 to rotate around the lock hook rotating shaft to open the landing door lock.
The elevator layer door pit unlocking mechanism of the first embodiment, independently assemble on elevator layer door head body 8, the pit cat ladder sets up when the left side, pit unlocking rope 11 winds around the slide bearing right side wire winding left, the pit cat ladder sets up when the right side, pit unlocking rope 11 winds around the slide bearing left side wire winding right, operating personnel pulling pit unlocking rope 11, just can realize elevator layer lock unblock action safely and reliably, the layer door left side and the right side that can be applicable to regulation in the new national standard simultaneously set up the pit cat ladder, and simple structure, be convenient for at pit unlocking elevator layer door, make the staff leave the pit safely.
Example two
Based on the elevator landing door pit unlocking mechanism in the first embodiment, the top plate 3 is provided with a limiting waist-shaped hole in the vertical direction;
the front end of the supporting shaft 20 extends into the limit waist-shaped hole.
In the elevator landing door pit unlocking mechanism according to the second embodiment, the front end of the support shaft 20 is inserted into the limit waist-shaped hole of the top plate 3, the length of the limit waist-shaped hole limits the up-and-down movement stroke of the top plate 3, and the sliding bearing 2 can be prevented from being separated from the support shaft 20.
EXAMPLE III
Based on the elevator landing door pit unlocking mechanism of the first embodiment, a return spring 7 is arranged between the support 1 and the top plate 3;
when the top plate 3 is in a natural state, the return spring 7 enables a gap to be formed between the lower end of the top plate 3 and the head of the locking hook body 81;
when the top plate 3 is pulled downwards by the pit unlocking rope 11, the top plate 3 moves downwards and deforms the return spring 7.
Example four
Based on the elevator landing door pit unlocking mechanism of the third embodiment, as shown in fig. 3, 4 and 5, the return spring 7 is a coil spring;
the upper end of the return spring 7 is fixed on the upper horizontal plane of the bracket 1, and the lower end of the return spring is fixed on the top plate 3;
the return spring 7 is deformed by elongation when the top plate 3 moves downward.
Preferably, the return spring 7 is located on the opposite side of the top plate 3 from the sliding bearing 2.
Preferably, the lower end of the return spring 7 is fixed on the top plate 3 through a bolt or a screw.
In the elevator landing door pit unlocking mechanism of the fourth embodiment, when an elevator installation or maintenance worker is ready to leave a hoistway from a pit, the pit unlocking rope 11 is pulled to drive the top plate 3 to move downwards on the left side or the right side of the pit ladder to unlock the elevator landing door lock, and the return spring 7 is stretched and deformed; after the pit unlocking rope 11 is loosened, the return spring 7 contracts to drive the top plate 3 to return.
EXAMPLE five
Based on the elevator landing door pit unlocking mechanism of the third embodiment, as shown in fig. 6 and 7, the upper end of the return spring 7 abuts against the upper end return part fixed together with the top plate 3, and the lower end abuts against the lower end return part fixed together with the support 1;
when the top plate 3 moves downwards, the return spring 7 is compressed and deformed.
Preferably, as shown in fig. 6 and 7, the lower reset component is fixed on the vertical surface of the bracket 1.
Preferably, the upper horizontal surface of the bracket 1 is used as a lower end reset component.
In the elevator landing door pit unlocking mechanism in the fifth embodiment, when an elevator installation or maintenance worker is ready to leave a hoistway from a pit, the pit unlocking rope 11 is pulled to drive the top plate 3 to move downwards on the left side or the right side of the pit ladder to unlock the elevator landing door lock, and the return spring 7 is compressed and deformed; after the pit unlocking rope 11 is loosened, the return spring 7 rebounds to drive the top plate 3 to reset.
EXAMPLE six
Based on the elevator landing door pit unlocking mechanism of the second embodiment, the door opening side end of the sliding bearing 2 of the door head body 8 is fixedly provided with a guide pulley;
the pit unlocking rope 11 is arranged along the upper part of the horizontal bending surface of the door head body 8 towards the door opening side of the sliding bearing 2, and then bypasses the guide pulley, and the other end of the pit unlocking rope is fixed on the wall surface or the sill of the hoistway.
Preferably, a wire clamp is fixed on the horizontal bending surface of the door head body 8 at the door opening side of the sliding bearing 2;
the pit unlocking rope 11 is routed along the upper side of the horizontal bending surface of the door head body 8 towards the door opening side of the sliding bearing 2, penetrates through the wire clamp and then bypasses the guide pulley. The wire clip is used to support the guide pit unlocking rope 11.
Preferably, the axial length of the sliding bearing 2 is 0.2mm to 2mm shorter than the distance between the top plate 3 and the vertical surface of the bracket 1;
the axial length of the slide bearing 2 is greater than 1 cm.
Preferably, the head of the lock hook body 81 is provided with an arc surface;
and the lower end of the top plate 3 and the arc surface of the head of the lock hook body 81 have a clearance of 1mm to 2mm in the natural state of the top plate 3.
Preferably, the driving rod 12 is a cross-recessed pan head screw.
Preferably, the lower horizontal surface of the bracket 1 is fixed to the horizontal bending surface of the door head body 8 by bolts.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (14)
1. An elevator landing door pit unlocking mechanism is characterized by comprising a support (1), a sliding bearing (2), a top plate (3) and a pit unlocking rope (11);
the door head body (8) of the elevator landing door is an L-shaped bending surface which is bent forwards;
the lock hook body (81) is pivotally fixed on the vertical bending surface of the door head body (8) through a lock hook rotating shaft;
when the head of the lock hook body (81) is pressed downwards to enable the lock hook body (81) to rotate around the lock hook rotating shaft, the door lock of the landing door can be opened;
the bracket (1) is in a [ -shape;
the lower horizontal plane of the bracket (1) is fixed on the horizontal bending plane of the door head body (8), and the opening side of the bracket (1) is forward;
the lower horizontal surface and the upper horizontal surface of the bracket (1) and the horizontal bending surface of the door head body (8) are respectively provided with a guide hole corresponding to the same vertical line position;
the top plate (3) penetrates through guide holes of a lower horizontal plane and an upper horizontal plane of the support (1) and a horizontal bending plane of the door head body (8) and can move up and down along the guide holes;
in the up-down stroke of the top plate (3), the upper end of the top plate (3) is higher than the upper horizontal plane of the bracket (1), and the lower end of the top plate (3) is lower than the horizontal bending plane of the door head body (8);
a supporting shaft (20) is vertically fixed on the vertical surface of the bracket (1);
the sliding bearing (2) is sleeved on the supporting shaft (20), and the sliding bearing (2) is positioned between the top plate (3) and the vertical surface of the support (1) and can rotate around the supporting shaft (20);
a transmission rod (12) is fixed on the top plate (3), and the transmission rod (12) is positioned between the sliding bearing (2) and the upper horizontal plane of the bracket (1);
one end of the pit unlocking rope (11) is fixed on the transmission rod (12) and bypasses the door closing side of the sliding bearing (2) to be routed towards the door opening side of the sliding bearing (2) along the upper part of the horizontal bending surface of the door head body (8);
in a natural state of the top plate (3), a gap is reserved between the lower end of the top plate (3) and the head of the lock hook body (81);
when the top plate (3) is dragged by the pit unlocking rope (11) to move downwards to exceed a set distance, the lower end of the top plate (3) can press down the head of the lock hook body (81) to enable the lock hook body (81) to rotate around the lock hook rotating shaft to open the landing door lock.
2. Elevator landing door pit unlocking mechanism according to claim 1,
the top plate (3) is provided with a limit waist-shaped hole in the vertical direction;
the front end of the supporting shaft (20) extends into the limit waist-shaped hole.
3. Elevator landing door pit unlocking mechanism according to claim 1,
a return spring (7) is arranged between the bracket (1) and the top plate (3);
when the top plate (3) is in a natural state, the return spring (7) enables the lower end of the top plate (3) and the head of the lock hook body (81) to have a gap;
when the top plate (3) is pulled downwards by the pit unlocking rope (11), the top plate (3) moves downwards and enables the return spring (7) to deform.
4. Elevator landing door pit unlocking mechanism according to claim 3,
the return spring (7) is a spiral spring;
the upper end of the reset spring (7) is fixed on the upper horizontal plane of the bracket (1), and the lower end of the reset spring is fixed on the top plate (3);
when the top plate (3) moves downwards, the return spring (7) is stretched and deformed.
5. Elevator landing door pit unlocking mechanism according to claim 4,
the return spring (7) and the sliding bearing (2) are located on the opposite side of the top plate (3).
6. Elevator landing door pit unlocking mechanism according to claim 4,
the lower end of the return spring (7) is fixed on the top plate (3) through a bolt or a screw.
7. Elevator landing door pit unlocking mechanism according to claim 3,
the upper end of the reset spring (7) is abutted against an upper end reset part fixed together with the top plate, and the lower end of the reset spring is abutted against a lower end reset part fixed together with the support (1);
and when the top plate (3) moves downwards, the return spring (7) is compressed and deformed.
8. Elevator landing door pit unlocking mechanism according to claim 7,
the lower end reset component is fixed on the vertical surface of the bracket (1).
9. Elevator landing door pit unlocking mechanism according to claim 7,
the upper horizontal surface of the bracket (1) is used as a lower end reset component.
10. Elevator landing door pit unlocking mechanism according to claim 1,
a guide pulley is fixedly arranged at the door opening side end of the sliding bearing (2) of the door head body (8);
pit unlocking rope (11) walks after walking towards slide bearing (2) side of opening along door head body (8) level bending surface top, walks around the guide pulley, and the other end is fixed on well wall or sill.
11. The elevator landing door pit unlocking mechanism of claim 10,
a wire clamp is fixed on the horizontal bending surface of the door head body (8) at the door opening side of the sliding bearing (2);
the pit unlocking rope (11) is arranged above the horizontal bending surface of the door head body (8) towards the door opening side of the sliding bearing (2), passes through the wire clamp and then bypasses the guide pulley.
12. Elevator landing door pit unlocking mechanism according to claim 1,
the axial length of the sliding bearing (2) is 0.2mm to 2mm shorter than the distance between the top plate (3) and the vertical surface of the bracket (1);
the axial length of the sliding bearing (2) is more than 1 cm.
13. Elevator landing door pit unlocking mechanism according to claim 1,
the head of the lock hook body (81) is provided with an arc surface;
and the top plate (3) is in a natural state, and a gap of 1mm to 2mm is reserved between the lower end of the top plate (3) and the arc surface of the head of the lock hook body (81).
14. Elevator landing door pit unlocking mechanism according to claim 1,
the transmission rod (12) is a cross-recessed pan head screw;
the lower horizontal plane of the bracket (1) is fixed on the horizontal bending plane of the door head body (8) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921239139.6U CN210340032U (en) | 2019-07-31 | 2019-07-31 | Elevator layer door pit unlocking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921239139.6U CN210340032U (en) | 2019-07-31 | 2019-07-31 | Elevator layer door pit unlocking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210340032U true CN210340032U (en) | 2020-04-17 |
Family
ID=70217992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921239139.6U Withdrawn - After Issue CN210340032U (en) | 2019-07-31 | 2019-07-31 | Elevator layer door pit unlocking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210340032U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110329884A (en) * | 2019-07-31 | 2019-10-15 | 永大电梯设备（中国）有限公司 | Elevator door pit unlocking mechanism |
-
2019
- 2019-07-31 CN CN201921239139.6U patent/CN210340032U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110329884A (en) * | 2019-07-31 | 2019-10-15 | 永大电梯设备（中国）有限公司 | Elevator door pit unlocking mechanism |
| CN110329884B (en) * | 2019-07-31 | 2024-06-14 | 永大电梯设备（中国）有限公司 | Elevator landing door pit unlocking mechanism |
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