CN220283223U - Unexpected mobile device is prevented to no computer lab elevator - Google Patents
Unexpected mobile device is prevented to no computer lab elevator Download PDFInfo
- Publication number
- CN220283223U CN220283223U CN202322189083.0U CN202322189083U CN220283223U CN 220283223 U CN220283223 U CN 220283223U CN 202322189083 U CN202322189083 U CN 202322189083U CN 220283223 U CN220283223 U CN 220283223U
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- blocking
- elevator
- elevator car
- prevention device
- accident prevention
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- 230000000903 blocking effect Effects 0.000 claims abstract description 103
- 230000005540 biological transmission Effects 0.000 claims abstract description 54
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 230000002265 prevention Effects 0.000 claims abstract description 36
- 230000033001 locomotion Effects 0.000 claims abstract description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
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- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The utility model discloses an unexpected movement prevention device of a machine-room-less elevator, which comprises a blocking assembly and an adjusting assembly, wherein the blocking assembly comprises a mounting seat, a driving unit and a blocking block are arranged on the mounting seat, the blocking block is in sliding connection with the mounting seat, and the output end of the driving unit is in transmission connection with the blocking block; the adjusting component comprises a transmission mechanism, and the output end of the transmission mechanism is connected with the mounting seat; the device also comprises an adjusting hand wheel which is connected with the input end of the transmission mechanism; when the elevator car is maintained, the elevator car hovers above the accident prevention device, and the accident prevention device abuts against the bottom of the elevator car through the blocking component and the adjusting component. According to the utility model, the telescopic blocking blocks are arranged below the elevator car, so that when the elevator is maintained, the telescopic blocking blocks extend into the bottom of the elevator car in an automatic extending mode, the elevator car is prevented from falling, and the safety of staff is ensured.
Description
Technical Field
The utility model belongs to the field of elevators, and particularly relates to an unexpected movement preventing device for a machine-room-less elevator.
Background
With the development of building technology, high-rise buildings in cities are increasing, and floors are also increasing. In order to facilitate users on high floors to go upstairs and downstairs, the existing floors are basically provided with elevators, so that the problem that the users on high floors are inconvenient to go upstairs and downstairs is solved. The existing elevators are basically provided with anti-falling structures, so that the elevators are prevented from suddenly falling in the running process, and casualties and property loss are caused. But most of the falling prevention structures of elevators only carry out emergency braking on the elevator after the elevator falls. When the elevator falls during maintenance of staff, even though emergency braking is performed through the falling prevention structure, the elevator can fall downwards for a certain distance, and the staff is easy to be injured.
In prior art, as the patent document with publication number CN204280946U, an elevator anti-falling device is disclosed, including anti-falling seat, anti-falling rail, anti-falling seat installs in the car bottom and goes up and down in step with the car, is equipped with the spout of wearing about on the base of car below, is equipped with the slider in the spout, and the base is stretched out at the slider top forms anti-falling hammer, and one side lateral wall of slider inclines, and opposite side lateral wall forms the lock arm to anti-falling rail direction horizontal extension, and the lock arm cooperates the car braking to falling with anti-falling rail. But this anti-falling device only takes place to drop the back at the elevator, carries out emergency braking to the elevator, takes place to fall when the elevator is maintained at the staff, even through the emergency braking of anti-falling structure, the elevator also can fall a certain distance downwards, leads to the staff to be injured easily.
Therefore, there is a need for an unexpected movement prevention device for a machine-roomless elevator.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides an unexpected movement prevention device for a machine-room-less elevator, and a worker adjusts the unexpected movement prevention device before maintaining the elevator, so that a blocking block is abutted with the bottom of the elevator, and the elevator is prevented from falling in the maintenance process.
The utility model is realized in the following way: the machine-roomless elevator accident prevention device comprises an elevator car arranged in a hoistway, wherein the accident prevention device is arranged on the inner wall of the hoistway, a plurality of accident prevention devices are arranged on each layer of the hoistway from a second layer of a building, and the accident prevention devices on the same layer are consistent in height and symmetrically arranged or uniformly distributed on the inner wall of the hoistway;
the anti-accidental moving device comprises a blocking assembly and an adjusting assembly, wherein the blocking assembly comprises a mounting seat, a driving unit and a blocking block are arranged on the mounting seat, the blocking block is in sliding connection with the mounting seat, and the output end of the driving unit is in transmission connection with the blocking block; the driving unit drives the blocking block to move back and forth, so that the blocking block is in an extending or retracting state. When the elevator normally operates, the blocking block is in a retracted state and cannot influence normal use of the elevator, and when the elevator needs maintenance, the blocking block is in an extended state and blocks the elevator car from moving downwards.
The adjusting component comprises a transmission mechanism, and the output end of the transmission mechanism is connected with the mounting seat; the device also comprises an adjusting hand wheel which is directly or indirectly connected with the input end of the transmission mechanism; the fixed plate is connected with the inner wall of the well and the transmission mechanism at the same time;
when the elevator car is maintained, the elevator car hovers above the accident prevention device, and the accident prevention device abuts against the bottom of the elevator car through the blocking component and the adjusting component.
Specifically, when the elevator car hovers above the accident-prevention moving device, the blocking block extends out through a button in the elevator car, and a gap is formed between the blocking block and the bottom of the elevator car at the moment, and the blocking block and the bottom of the elevator car are not in abutting connection; and then, the staff adjusts the adjusting assembly to drive the blocking block to move upwards, so that the blocking block is abutted with the elevator car, and the anti-falling effect is achieved.
Preferably, the top of blocking the piece is equipped with flexible blotter, flexible blotter is used for preventing the blocking the piece still with when elevator car butt, elevator car takes place to fall, reduces elevator car is right the impact of blocking the piece.
Preferably, the blocking assembly further comprises a first guiding mechanism, the first guiding mechanism comprises a first guide rail and a first sliding block slidingly connected with the first guide rail, the first guide rail is fixedly connected with the mounting seat, and the first sliding block is fixedly connected with the blocking block. The first guide mechanism is used for guiding the blocking block during the back-and-forth movement, preventing the blocking block from overturning around the extending direction in the extending process, further leading the blocking block to be incapable of extending into the bottom of the elevator car, and improving the stability of the blocking assembly.
Preferably, the adjusting assembly further comprises second guide mechanisms symmetrically arranged on two sides of the transmission mechanism, each second guide mechanism comprises a second guide rail and a second sliding block slidingly connected with the corresponding second guide rail, the second guide rails are fixedly connected with the fixing plates, and the second sliding blocks are fixedly connected with the mounting seats. The second guide mechanism is used for guiding the blocking assembly to move up and down, so that the movement direction of the blocking assembly is not changed when the blocking assembly moves, and the reliability of the adjusting assembly is improved. Meanwhile, the overturning moment generated by the blocking component completely acts on the second guide mechanism, so that deformation caused by the fact that the transmission mechanism receives the overturning moment of the blocking component is avoided, and the service life of the transmission mechanism is prolonged.
Specifically, the adjusting component further comprises a cushion block corresponding to the second guide mechanism, wherein the cushion block is clamped between the fixed plate and the second guide rail and is simultaneously connected with the fixed plate and the second guide rail. Because the second guide rail needs to bear the moment generated by the blocking component, the material rigidity and the strength of the second guide rail are high, the processing is difficult, the second guide rail is fixedly arranged on the fixed plate through the cushion block, the volume of the second guide rail is reduced, and the processing cost of the second guide rail is reduced.
Preferably, the transmission mechanism is a screw rod assembly and comprises a screw rod seat and a transmission screw rod rotationally connected with the screw rod seat, wherein a screw rod nut is screwed on the transmission screw rod, and the screw rod nut is used as an output end of the transmission mechanism to be connected with the mounting seat. The transmission screw rod is a trapezoidal screw rod, the thread lead angle of the trapezoidal screw rod is smaller than 20 degrees, the self-locking effect is achieved, the screw rod can be driven only by rotating the transmission screw rod, the screw rod nut is prevented from being displaced due to overlarge load, and the reliability of the adjusting assembly is improved.
Specifically, one end of the transmission screw rod is provided with a first bevel gear, the tail end of the adjusting hand wheel is provided with a second bevel gear which is matched with the first bevel gear, and the first bevel gear is meshed with the second bevel gear for transmission. Through the meshing transmission of the first bevel gear and the second bevel gear, the direction of the adjusting hand wheel is changed, the operation of staff is facilitated, and the operation convenience of the adjusting assembly is improved.
Specifically, the gear ratio of the first bevel gear to the second bevel gear is 2:1. The first bevel gear and the second bevel gear form reduction transmission, so that torque required by rotating the adjusting hand wheel is reduced, and the convenience of operation of the adjusting assembly is further improved.
Preferably, the mounting seat is L-shaped and comprises a first mounting plate and a second mounting plate which are perpendicular to each other and fixedly connected, and further comprises a reinforcing rib, wherein the reinforcing rib is simultaneously connected with the first mounting plate and the second mounting plate. When the elevator car falls, the load required to be borne by the mounting seat is large, the rigidity of the mounting seat is improved by the reinforcing ribs, the mounting seat can bear larger load, and the reliability of the mounting seat is improved.
Preferably, the driving unit is an electric cylinder. The blocking block enables the seat to extend or retract through the electric cylinder. Because there is the error in the height of hovering of elevator car when maintaining at every turn, so through artificial mode regulation adjusting part to guarantee the stop block with elevator car butt, and each accident prevention mobile device's stop block atress is even. For guaranteeing the safety of staff when adjusting the subassembly, need be through automatic mode, make the stop block is adjusted by the staff adjusting the subassembly is preceding stretches out, prevents elevator car is adjusted by the staff when adjusting the subassembly suddenly falls, causes the casualties.
Specifically, the output end of the electric cylinder is provided with a floating joint, and the floating joint is simultaneously connected with the output end of the electric cylinder and the blocking block. Because there is the error when the electric jar is installed, the installation error of electric jar exists and leads to blocking the risk of dead when the piece moves, makes through the floating joint there is activity surplus between electric jar and the piece that blocks, in order to avoid blocking the dead when the piece moves.
The utility model has the beneficial effects that:
according to the utility model, the telescopic blocking blocks are arranged below the elevator car, when the elevator is maintained, the telescopic blocking blocks extend into the bottom of the elevator car in an automatic extending mode, so that the elevator car is prevented from falling, the safety of workers is ensured, the height of the blocking blocks is adjusted, the blocking blocks are abutted with the bottom of the elevator car, the additional impact on the blocking blocks when the elevator car falls is prevented, and the service life of the blocking blocks is prolonged; meanwhile, when each blocking block is abutted with the bottom of the elevator car, each blocking block just contacts with the bottom of the elevator car, and under the condition that the elevator car does not fall, each blocking block cannot be subjected to the pressure of the elevator car, so that the service life of the blocking block is further prolonged.
Drawings
FIG. 1 is a schematic view of an anti-accidental movement device of the present utility model;
FIG. 2 is an enlarged schematic view of portion a of FIG. 1;
FIG. 3 is an overall schematic view of the anti-accidental movement device of the present utility model;
FIG. 4 is a schematic view of a blocking assembly of the anti-accidental movement device of the present utility model;
FIG. 5 is a schematic view of an adjustment assembly of the anti-accidental movement device of the present utility model;
FIG. 6 is a schematic diagram of a transmission mechanism of the anti-accidental movement device of the present utility model;
fig. 7 is a schematic view of a mounting base of the accident prevention device according to the present utility model.
Reference numerals:
1. a hoistway; 2. an elevator car; 3. an anti-accidental movement device; 31. a blocking assembly; 32. an adjustment assembly; 311. a mounting base; 312. a blocking piece; 313. a driving unit; 321. a transmission mechanism; 322. a fixing plate; 323. a second guide mechanism; 324. a cushion block; 325. an adjusting hand wheel; 3111. a first mounting plate; 3112. a second mounting plate; 3113. reinforcing ribs; 3211. a screw rod seat; 3212. a transmission screw rod; 3213. a screw nut; 3214. a first bevel gear; 3251. and a second bevel gear.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-6, an unexpected movement prevention device for a machine-room-less elevator comprises an elevator car 2 arranged in a hoistway 1, wherein the unexpected movement prevention device 3 is arranged on the inner wall of the hoistway 1, a plurality of unexpected movement prevention devices 3 are arranged on each floor of the hoistway 1 from the second floor of a building, and the unexpected movement prevention devices 3 on the same floor are identical in height and are symmetrically arranged or uniformly distributed on the inner wall of the hoistway 1;
the accident prevention device 3 comprises a blocking assembly 31 and an adjusting assembly 32, the blocking assembly 31 comprises a mounting seat 311, a driving unit 313 and a blocking block 312 are arranged on the mounting seat 311, the blocking block 312 is in sliding connection with the mounting seat 311, and the output end of the driving unit 313 is in transmission connection with the blocking block 312; the driving unit 313 drives the blocking piece 312 to move forward and backward, so that the blocking piece 312 is in an extended or retracted state. When the elevator is in normal operation, the blocking block 312 is in a retracted state and does not affect normal use of the elevator, and when the elevator needs maintenance, the blocking block 312 is in an extended state and blocks the elevator car 2 from moving downwards. In this embodiment, the blocking assembly 31 further includes a first guiding mechanism, where the first guiding mechanism includes a first guide rail, and a first slider slidably connected to the first guide rail, where the first guide rail is fixedly connected to the mounting seat 311, and the first slider is fixedly connected to the blocking block 312. The first guiding mechanism is used for guiding the blocking block 312 during the back-and-forth movement, so that the blocking block 312 is prevented from overturning around the extending direction in the extending process, and then the blocking block 312 cannot extend into the bottom of the elevator car 2, and the stability of the blocking assembly 31 is improved.
In this embodiment, the mounting base 311 is L-shaped, and includes a first mounting plate 3111 and a second mounting plate 3112 that are perpendicular to each other and fixedly connected, and a reinforcing rib 3113, where the reinforcing rib 3113 connects the first mounting plate 3111 and the second mounting plate 3112 at the same time. When the elevator car 2 falls, the load to be borne by the mounting seat 311 is larger, and the reinforcing ribs 3113 improve the rigidity of the mounting seat 311, so that the mounting seat 311 can bear larger load, and the reliability of the mounting seat 311 is improved.
In this embodiment, the driving unit 313 is an electric cylinder. The block 312 is made to extend or retract the seat by the electric cylinder. Since there is an error in the hovering height of the elevator car 2 at each maintenance, the adjusting assembly 32 is manually adjusted to ensure that the blocking blocks 312 are abutted against the elevator car 2, and the blocking blocks 312 of the respective accidental movement preventing devices 3 are uniformly stressed. In order to ensure the safety of the staff in adjusting the adjusting assembly 32, the blocking block 312 is required to extend out before the staff adjusts the adjusting assembly 32 in an automatic mode, so that the elevator car 2 is prevented from suddenly falling when the staff adjusts the adjusting assembly 32, and casualties are caused.
Specifically, the output end of the electric cylinder is provided with a floating joint, and the floating joint is simultaneously connected with the output end of the electric cylinder and the blocking block 312. Because there is an error in the installation of the electric cylinder, there is a risk of the blocking block 312 being blocked when moving due to the installation error of the electric cylinder, and a movement allowance exists between the electric cylinder and the blocking block 312 through the floating joint, so as to avoid the blocking block 312 from being blocked when moving.
The adjusting assembly 32 comprises a transmission mechanism 321, and an output end of the transmission mechanism 321 is connected with the mounting seat 311; the device also comprises an adjusting hand wheel 325, wherein the adjusting hand wheel 325 is directly or indirectly connected with the input end of the transmission mechanism 321; the device also comprises a fixed plate 322, wherein the fixed plate 322 is simultaneously connected with the inner wall of the well 1 and the transmission mechanism 321;
in this embodiment, the adjusting component 32 further includes second guiding mechanisms 323 symmetrically disposed on two sides of the transmission mechanism 321, where the second guiding mechanisms 323 include a second guide rail, and a second slider slidably connected with the second guide rail, the second guide rail is fixedly connected with the fixing plate 322, and the second slider is fixedly connected with the mounting seat 311. The second guiding mechanism 323 is used for guiding the blocking component 31 when moving up and down, so that the moving direction of the blocking component 31 is not changed when moving, and the reliability of the adjusting component 32 is improved. Meanwhile, the overturning moment generated by the blocking component 31 acts on the second guiding mechanism 323 completely, so that deformation caused by the fact that the transmission mechanism 321 receives the overturning moment of the blocking component 31 is avoided, and the service life of the transmission mechanism 321 is prolonged.
Specifically, the adjusting assembly 32 further includes a spacer 324 corresponding to the second guide mechanism 323, and the spacer 324 is sandwiched between the fixing plate 322 and the second guide rail and connects the fixing plate 322 and the second guide rail at the same time. Because the second guide rail needs to bear the moment generated by the blocking component 31, the material rigidity and strength are high, the processing is difficult, and the second guide rail is fixedly installed on the fixing plate 322 through the cushion block 324, so that the volume of the second guide rail is reduced, and the processing cost of the second guide rail is reduced.
In this embodiment, the transmission mechanism 321 is a screw assembly, and includes a screw base 3211, and a transmission screw rod 3212 rotatably connected to the screw base 3211, a screw nut 3213 is screwed onto the transmission screw rod 3212, and the screw nut 3213 is connected to the mounting base 311 as an output end of the transmission mechanism 321. The transmission screw rod 3212 is a trapezoidal screw rod, the threaded lift angle of the trapezoidal screw rod is smaller than 20 degrees, the self-locking effect is achieved, the screw rod can be driven only by rotating the transmission screw rod 3212, the screw rod nut 3213 is prevented from being displaced due to overlarge load, and the reliability of the adjusting assembly 32 is improved.
Specifically, a first bevel gear 3214 is disposed at one end of the transmission screw rod 3212, a second bevel gear 3251 corresponding to the first bevel gear 3214 is disposed at the end of the adjusting hand wheel 325, and the first bevel gear 3214 and the second bevel gear 3251 are in meshed transmission. Through the meshing transmission of the first bevel gear 3214 and the second bevel gear 3251, the direction of the adjusting hand wheel 325 is changed, so that the operation of a worker is facilitated, and the operation convenience of the adjusting assembly 32 is improved.
Specifically, the first bevel gear 3214 and the second bevel gear 3251 have a gear ratio of 2:1. The first bevel gear 3214 forms a reduction gear with the second bevel gear 3251, reducing the torque required to rotate the adjustment hand wheel 325, further improving the ease of operation of the adjustment assembly 32.
In this embodiment, a silica gel buffer pad is disposed at the top of the blocking block 312, and is used for preventing the blocking block 312 from falling off from the elevator car 2 when the blocking block 312 is not abutting against the elevator car 2, so as to reduce the impact of the elevator car 2 on the blocking block 312.
In this embodiment, when the elevator car 2 is maintained, the elevator car 2 hovers above the accident prevention device 3, and the accident prevention device 3 abuts the blocking block 312 against the bottom of the elevator car 2 through the blocking component 31 and the adjusting component 32.
Specifically, when the elevator car 2 hovers above the accident prevention device 3, the blocking block 312 is extended by a button in the elevator car 2, and a gap is formed between the blocking block 312 and the bottom of the elevator car 2, and the blocking block and the bottom of the elevator car 2 are not abutted; the worker then adjusts the adjusting assembly 32 to drive the blocking block 312 to move upwards, so that the blocking block 312 abuts against the elevator car 2, and an anti-falling effect is achieved.
Variations and modifications to the above would be obvious to persons skilled in the art to which the utility model pertains from the foregoing description and teachings. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the utility model should be also included in the scope of the claims of the utility model. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present utility model in any way.
Claims (10)
1. The machine-roomless elevator accident prevention device comprises an elevator car arranged in a hoistway, wherein the accident prevention device is arranged on the inner wall of the hoistway, a plurality of accident prevention devices are arranged on each hoistway from a second floor of a building, and the accident prevention devices on the same floor are uniform in height and symmetrically arranged or uniformly distributed on the inner wall of the hoistway; it is characterized in that the method comprises the steps of,
the anti-accidental moving device comprises a blocking assembly and an adjusting assembly, wherein the blocking assembly comprises a mounting seat, a driving unit and a blocking block are arranged on the mounting seat, the blocking block is in sliding connection with the mounting seat, and the output end of the driving unit is in transmission connection with the blocking block;
the adjusting component comprises a transmission mechanism, and the output end of the transmission mechanism is connected with the mounting seat; the device also comprises an adjusting hand wheel which is directly or indirectly connected with the input end of the transmission mechanism; the fixed plate is connected with the inner wall of the well and the transmission mechanism at the same time;
when the elevator car is maintained, the elevator car hovers above the accident prevention device, and the accident prevention device abuts against the bottom of the elevator car through the blocking component and the adjusting component.
2. The machine-roomless elevator motion prevention device of claim 1, wherein said blocking assembly further comprises a first guide mechanism comprising a first rail and a first slider slidably coupled to said first rail, said first rail being fixedly coupled to said mounting block, said first slider being fixedly coupled to said blocking block.
3. The accident prevention device for the elevator without machine room according to claim 1, wherein the adjusting assembly further comprises second guide mechanisms symmetrically arranged on two sides of the transmission mechanism, the second guide mechanisms comprise second guide rails and second sliding blocks slidingly connected with the second guide rails, the second guide rails are fixedly connected with the fixing plates, and the second sliding blocks are fixedly connected with the mounting seats.
4. The machine roomless elevator safety device of claim 3, wherein said adjustment assembly further comprises a spacer corresponding to said second guide mechanism, said spacer being sandwiched between said fixed plate and said second guide rail and simultaneously connecting said fixed plate and said second guide rail.
5. The unexpected movement prevention device of a machineroom-less elevator according to claim 1, wherein the transmission mechanism is a screw assembly, and comprises a screw base, and a transmission screw rotatably connected with the screw base, wherein a screw nut is screwed on the transmission screw, and the screw nut is connected with the mounting base as an output end of the transmission mechanism.
6. The accident prevention device for the elevator without machine room according to claim 5, wherein a first bevel gear is arranged at one end of the transmission screw rod, a second bevel gear which is adaptive to the first bevel gear is arranged at the tail end of the adjusting hand wheel, and the first bevel gear is meshed with the second bevel gear for transmission.
7. The machine roomless elevator safety gear as claimed in claim 6, wherein the first bevel gear and the second bevel gear have a gear ratio of 2:1.
8. The unexpected mobile device of claim 1 wherein the mounting base is L-shaped and comprises a first mounting plate and a second mounting plate which are perpendicular to each other and fixedly connected, and further comprises a reinforcing rib which connects the first mounting plate and the second mounting plate at the same time.
9. The accident prevention apparatus for a machineroom-less elevator according to claim 1, wherein the driving unit is an electric cylinder.
10. The accident prevention device for the elevator without machine room according to claim 9, wherein the output end of the electric cylinder is provided with a floating joint, and the floating joint is simultaneously connected with the output end of the electric cylinder and the blocking block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322189083.0U CN220283223U (en) | 2023-08-14 | 2023-08-14 | Unexpected mobile device is prevented to no computer lab elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322189083.0U CN220283223U (en) | 2023-08-14 | 2023-08-14 | Unexpected mobile device is prevented to no computer lab elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220283223U true CN220283223U (en) | 2024-01-02 |
Family
ID=89326498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322189083.0U Active CN220283223U (en) | 2023-08-14 | 2023-08-14 | Unexpected mobile device is prevented to no computer lab elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220283223U (en) |
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2023
- 2023-08-14 CN CN202322189083.0U patent/CN220283223U/en active Active
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