CN213144289U - Security door with early warning function - Google Patents
Security door with early warning function Download PDFInfo
- Publication number
- CN213144289U CN213144289U CN202021624985.2U CN202021624985U CN213144289U CN 213144289 U CN213144289 U CN 213144289U CN 202021624985 U CN202021624985 U CN 202021624985U CN 213144289 U CN213144289 U CN 213144289U
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- water
- water tank
- early warning
- pipe
- wall
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 136
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 55
- 229910052802 copper Inorganic materials 0.000 claims description 55
- 239000010949 copper Substances 0.000 claims description 55
- 239000000645 desinfectant Substances 0.000 claims description 27
- 239000006260 foam Substances 0.000 claims description 21
- 210000000056 organ Anatomy 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 4
- 230000002421 anti-septic effect Effects 0.000 abstract description 15
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract 3
- 230000001502 supplementing effect Effects 0.000 description 5
- 230000001954 sterilising effect Effects 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 230000000249 desinfective effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Burglar Alarm Systems (AREA)
Abstract
The utility model discloses a burglary-resisting door with early warning function, door handle in burglary-resisting door main part and the burglary-resisting door main part, be provided with in the burglary-resisting door main part with door handle matched with spraying disinfection mechanism and with spraying disinfection mechanism matched with water level early warning mechanism, spraying disinfection mechanism is including inlaying the water tank of dress in the burglary-resisting door main part, and the top and the below of door handle all are equipped with small-size atomizer, and the left side top fixed mounting of water tank has miniature pump, and miniature pump's water inlet intercommunication is fixed with L shape inlet tube, and the bottom of L shape inlet tube extends to in the water tank. The utility model relates to a rationally, convenient to use is convenient for disinfect to the doorknob automatically fast, need not personnel and carries the antiseptic solution, and is convenient for warn the suggestion personnel and supply the antiseptic solution when the antiseptic solution is about to run out, realizes the function of the dangerous water level early warning of antiseptic solution and suggests, satisfies the user demand, is favorable to using.
Description
Technical Field
The utility model relates to a burglary-resisting door technical field especially relates to a burglary-resisting door with early warning function.
Background
With the improvement of safety awareness of people, the anti-theft door is more and more accepted by people, is called as an anti-theft safety door and has anti-theft and safety performances, and the anti-theft doors realize early warning or warning (warning personnel that the doors are not closed) effects by installing a door magnetic sensor or an anti-theft door alarm; the intelligent anti-intrusion early-warning informing anti-theft door disclosed by the authorization notice number CN201106383Y comprises a door body, an infrared detector, an alarm, a control system, a line plug, a switch and a door magnetic sensor, and is mainly and technically characterized in that the infrared detector is embedded in the door frame, the alarm system is arranged in the door frame or in the door surface or outside the door body through a lead, the door body is provided with the door magnetic sensor, and the anti-theft functions of informing, early warning, alarming scaring and the like are completed under the state that the alarm system is hidden (early warning and the alarm system is hidden), so that the safety of the anti-theft door is greatly improved.
However, the existing anti-theft door with the early warning function realizes the general early warning function; but it has the automatic function of disinfecting to the door handle fast of being not convenient for, (because the epidemic situation influences, has improved people's consciousness to health safety, most residents all allocate the disinfectant by oneself and carry out disinfection and sterilization work to the door handle of burglary-resisting door at home, especially when going out to return, need hand-carry antiseptic solution, use door handle disinfection earlier when reaching to return, it is more loaded down with trivial details inconvenient), can not satisfy the user demand, improve to this phenomenon, therefore we have proposed a burglary-resisting door with early warning function, be used for solving above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a security door with an early warning function.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a security door with an early warning function comprises a security door body and a door handle on the security door body, wherein a spray disinfection mechanism matched with the door handle and a water level early warning mechanism matched with the spray disinfection mechanism are arranged on the security door body, the spray disinfection mechanism comprises a water tank embedded in the security door body, small atomization nozzles are arranged above and below the door handle, a miniature water pump is fixedly installed at the top of the left side of the water tank, a water inlet of the miniature water pump is communicated and fixed with an L-shaped water inlet pipe, the bottom end of the L-shaped water inlet pipe extends into the water tank, a water outlet of the miniature water pump is communicated and fixed with an L-shaped pipe with the bottom end being of a blocking structure, two water outlet pipes are communicated and fixed at the front side of the L-shaped pipe, the front end of each water outlet pipe extends to the front side of the security door body and is communicated and fixed, the front side of the water pump is fixedly and electrically connected with a pressing type starting switch, the pressing end of the pressing type starting switch extends to the front side of the anti-theft door main body, the top of the water tank is fixedly connected with a storage battery, the storage battery is electrically connected with the water pump, the rear side of the water tank is communicated and fixedly provided with a water supplementing pipe, the rear end of the water supplementing pipe extends to the rear side of the anti-theft door main body and is sleeved with a pipe cover in a threaded manner, and the water tank is filled with disinfectant;
the water level early warning mechanism includes the bee calling organ of fixed mounting at the water tank top, bee calling organ's right side fixed mounting has first copper billet, the top of antiseptic solution floats there is the foam to float the board, and the top fixedly connected with montant of foam floating board, the top of montant extends to the top and the fixed mounting of water tank has the second copper billet, the second copper billet is located the top of first copper billet and cooperatees with first copper billet, the slip cover is equipped with the rectangular pipe on the montant, the water tank fixed cover is established on the rectangular pipe, fixedly connected with stopper on the bottom inner wall of water tank, first copper billet and bee calling organ are all through flexible conductor and battery electric connection, bee calling organ passes through flexible conductor and second copper billet electric connection.
Preferably, battery, bee calling organ, second copper billet and first copper billet constitute a return circuit in proper order, and the right side bonding of bee calling organ is fixed with first insulating rubber, and the right side of first insulating rubber and the left side bonding of first copper billet are fixed, and the top bonding of montant is fixed with second insulating rubber, and the top of second insulating rubber and the bottom bonding of second copper billet are fixed.
Preferably, the distance between the top of stopper and the bottom of water tank is greater than the distance between the bottom of L shape inlet tube and the bottom inner wall of water tank, and the stopper is located the below of foam floating plate, and the distance between the top of stopper and the bottom of foam floating plate is the same with the distance between the top of first copper billet and the bottom of second copper billet.
Preferably, a rectangular hole is formed in the inner wall of the top of the water tank, and the inner wall of the rectangular hole is in sliding connection with the outer side of the rectangular pipe.
Preferably, a first round hole is formed in the inner wall of the rear side of the water tank, a through hole is formed in the inner wall of the rear side of the anti-theft door main body, the side wall of the first round hole is fixedly connected with the outer side of the water replenishing pipe, the water replenishing pipe is located in the through hole, and the inner wall of the through hole is not in contact with the outer side of the water replenishing pipe.
Preferably, two second round holes and a third round hole are formed in the inner wall of the front side of the anti-theft door main body, the side wall of each second round hole is fixedly bonded with the outer side of the corresponding water outlet pipe, the pressing end of the pressing type starting switch is located in the third round hole, and the side wall of each third round hole is not in contact with the outer side of the pressing end of the pressing type starting switch.
Preferably, the inner side of the pipe cover is provided with an internal thread, and the outer side of the water replenishing pipe is provided with an external thread meshed with the internal thread.
Compared with the prior art, the beneficial effects of the utility model are that:
through the anti-theft door main body, the door handle, the small-sized atomizer, the water tank, the micro-water pump, the L-shaped water inlet pipe, the press-type starting switch, the L-shaped pipe, the water outlet pipe, the storage battery, the water replenishing pipe, the rectangular pipe, the foam floating plate, the vertical rod, the second copper block, the buzzer, the first copper block and the limiting block are matched, when in disinfection, the micro-water pump can be started by pressing the press-type starting switch by using articles such as a door key and the like, the micro-water pump extracts disinfectant in the water tank through the L-shaped water inlet pipe and sprays the disinfectant into the two water outlet pipes through the L-shaped pipe, the disinfectant then enters the small-sized atomizer through the corresponding water outlet pipes, the disinfectant is atomized and sprayed onto the door handle through the small-sized atomizer for disinfection and sterilization, when the disinfectant gradually decreases, the second copper block and the vertical, when the foam floating plate moves down to the top contact with the stopper, the second copper billet moves down to the top contact with first copper billet this moment, bee calling organ circular telegram is sounded this moment, reach warning suggestion personnel and supply antiseptic solution, personnel through moisturizing pipe with antiseptic solution pour into the water tank in can, along with the water level of antiseptic solution risees, the foam floating plate upwards floats under the buoyancy effect this moment, the foam floating plate drives the second copper billet through the montant and upwards separates with first copper billet, bee calling organ outage this moment is closed, realize the function of the dangerous water level early warning of antiseptic solution suggestion.
The utility model relates to a rationally, convenient to use is convenient for disinfect to the doorknob automatically fast, need not personnel and carries the antiseptic solution, and is convenient for warn the suggestion personnel and supply the antiseptic solution when the antiseptic solution is about to run out, realizes the function of the dangerous water level early warning of antiseptic solution and suggests, satisfies the user demand, is favorable to using.
Drawings
Fig. 1 is a schematic structural view of a security door with an early warning function provided by the present invention;
FIG. 2 is a schematic sectional view of part A of FIG. 1;
fig. 3 is a right-view schematic diagram of an L-shaped tube, a water outlet tube and a small-sized atomizing nozzle connecting piece of the security door with an early warning function provided by the utility model;
fig. 4 is a schematic top-view cross-sectional view of the water replenishing pipe and the pipe cover connecting piece of the security door with the early warning function.
In the figure: 100 security door main part, 101 door handle, 1 small-size atomizer, 2 water tanks, 3 miniature water pump, 4L shape inlet tube, 5 push type starting switch, 6L venturi tubes, 7 outlet pipes, 8 batteries, 9 moisturizing pipes, 10 rectangular pipes, 11 foam floating plate, 12 montants, 13 second copper blocks, 14 bee calling organ, 15 first copper blocks, 16 stopper.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-4, a security door with an early warning function comprises a security door main body 100 and a door handle 101 on the security door main body 100, wherein a spray disinfection mechanism matched with the door handle 101 and a water level early warning mechanism matched with the spray disinfection mechanism are arranged on the security door main body 100, the spray disinfection mechanism comprises a water tank 2 embedded in the security door main body 100, small atomization nozzles 1 are arranged above and below the door handle 101, a miniature water pump 3 is fixedly installed at the top of the left side of the water tank 2, a water inlet of the miniature water pump 3 is communicated and fixed with an L-shaped water inlet pipe 4, the bottom end of the L-shaped water inlet pipe 4 extends into the water tank 2, a water outlet of the miniature water pump 3 is communicated and fixed with an L-shaped pipe 6 with a bottom end being a plugging structure, the front side of the L-shaped pipe 6 is communicated and fixed with two water outlet pipes 7, the front end of each water outlet pipe 7 extends to the front of the security door main, the front side of the water pump 3 is fixedly and electrically connected with a push type starting switch 5, the push end of the push type starting switch 5 extends to the front side of the anti-theft door main body 100, the top of the water tank 2 is fixedly connected with a storage battery 8, the storage battery 8 is electrically connected with the water pump 3, the rear side of the water tank 2 is communicated and fixedly provided with a water supplementing pipe 9, the rear end of the water supplementing pipe 9 extends to the rear of the anti-theft door main body 100 and is sleeved with a pipe cover in a threaded manner, and the water tank 2 is filled with disinfectant;
the water level early warning mechanism comprises a buzzer 14 fixedly arranged at the top of a water tank 2, a first copper block 15 is fixedly arranged at the right side of the buzzer 14, a foam floating plate 11 floats at the top of disinfectant, a vertical rod 12 is fixedly connected to the top of the foam floating plate 11, the top end of the vertical rod 12 extends to the upper part of the water tank 2 and is fixedly provided with a second copper block 13, the second copper block 13 is positioned above the first copper block 15 and is matched with the first copper block 15, a rectangular pipe 10 is sleeved on the vertical rod 12 in a sliding manner, the water tank 2 is fixedly sleeved on the rectangular pipe 10, a limiting block 16 is fixedly connected to the inner wall of the bottom of the water tank 2, the first copper block 15 and the buzzer 14 are both electrically connected with a storage battery 8 through flexible wires, and the buzzer 14 is electrically connected with the second copper block 13 through flexible wires, the utility model has reasonable design and convenient use, is convenient for automatically and quickly disinfecting and sterilizing the door handle, and the warning and prompting personnel can conveniently supplement the disinfectant when the disinfectant is about to run out, the function of warning and prompting the dangerous water level of the disinfectant is realized, the use requirement is met, and the use is facilitated.
In the utility model, a storage battery 8, a buzzer 14, a second copper block 13 and a first copper block 15 sequentially form a loop, the right side of the buzzer 14 is fixedly bonded with a first insulating rubber, the right side of the first insulating rubber is fixedly bonded with the left side of the first copper block 15, the top end of a vertical rod 12 is fixedly bonded with a second insulating rubber, the top end of the second insulating rubber is fixedly bonded with the bottom of the second copper block 13, the distance between the top of a limiting block 16 and the bottom of a water tank 2 is larger than the distance between the bottom end of an L-shaped water inlet pipe 4 and the inner wall of the bottom of the water tank 2, the limiting block 16 is positioned below a foam floating plate 11, the distance between the top of the limiting block 16 and the bottom of the foam floating plate 11 is the same as the distance between the top of the first copper block 15 and the bottom of the second copper block 13, a rectangular hole is arranged on the inner wall of the top of the water tank 2, and the inner wall of the rectangular hole is connected with the outer side of, the utility model relates to a rationally designed, convenient to use, convenient to automatically and rapidly disinfect and sterilize the door handle 101, without carrying disinfectant by personnel, and convenient to alarm and prompt personnel to supplement disinfectant when the disinfectant is about to be used up, realize the dangerous water level early warning of antiseptic solution and point out the function, satisfy the user demand, be favorable to using.
The working principle is as follows: when a person comes back, firstly, the door handle 101 needs to be disinfected, when the door handle is disinfected, the door key and other objects can be used for pressing the press type starting switch 5 to start the micro water pump 3, the water inlet of the micro water pump 3 extracts disinfectant in the water tank 2 through the L-shaped water inlet pipe 4, then the micro water pump 3 sprays the extracted disinfectant into the two water outlet pipes 7 through the L-shaped pipe 6, the disinfectant enters the small atomizing nozzle 1 through the corresponding water outlet pipe 7, and then the disinfectant is atomized and sprayed onto the door handle 101 through the small atomizing nozzle 1 to be disinfected and sterilized, so that the door handle 101 can be automatically and quickly disinfected and sterilized;
when the disinfectant is gradually reduced in use, the second copper block 13 and the vertical rod 12 move downwards under the action of the self gravity, the vertical rod 12 slides downwards in the rectangular pipe 10, the vertical rod 12 drives the foam floating plate 11 to move downwards along with the reduction of the water level of the disinfectant, when the foam floating plate 11 moves downwards to be in contact with the top of the limiting block 16, the second copper block 13 moves downwards to be in contact with the top of the first copper block 15, as the storage battery 8, the buzzer 14, the second copper block 13 and the first copper block 15 sequentially form a loop, the buzzer 14 is powered on to sound, so as to alarm and prompt personnel to supplement the disinfectant, when the disinfectant is supplemented, the personnel can fill the disinfectant into the water tank 2 through the water supplementing pipe 9, the foam floating plate 11 floats upwards under the buoyancy of the rising disinfectant, the foam floating plate 11 drives the second copper block 13 to separate upwards from the first copper block 15 through the vertical rod 12, at this time, the buzzer 14 is powered off and closed, so that the function of warning and prompting the dangerous water level of the disinfectant can be realized.
In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A security door with an early warning function comprises a security door main body (100) and a door handle (101) on the security door main body (100), wherein a spray disinfection mechanism matched with the door handle (101) and a water level early warning mechanism matched with the spray disinfection mechanism are arranged on the security door main body (100), and the security door is characterized in that the spray disinfection mechanism comprises a water tank (2) embedded in the security door main body (100), small-sized atomizing nozzles (1) are arranged above and below the door handle (101), a miniature water pump (3) is fixedly installed at the top of the left side of the water tank (2), a water inlet of the miniature water pump (3) is communicated and fixed with an L-shaped water inlet pipe (4), the bottom end of the L-shaped water inlet pipe (4) extends into the water tank (2), a water outlet of the miniature water pump (3) is communicated and fixed with an L-shaped pipe (6) with the bottom end being of, the front side of the L-shaped pipe (6) is communicated and fixed with two water outlet pipes (7), the front ends of the water outlet pipes (7) extend to the front side of the anti-theft door main body (100) and are communicated and fixed with the rear sides of the corresponding small atomizing nozzles (1), the front side of the water pump (3) is fixedly and electrically connected with a pressing type starting switch (5), the pressing end of the pressing type starting switch (5) extends to the front side of the anti-theft door main body (100), the top of the water tank (2) is fixedly connected with a storage battery (8), the storage battery (8) is electrically connected with the water pump (3), the rear side of the water tank (2) is communicated and fixed with a water replenishing pipe (9), the rear end of the water replenishing pipe (9) extends to the rear side of the anti-theft door main body (100) and is sleeved with a pipe cover in a threaded manner;
the water level early warning mechanism comprises a buzzer (14) fixedly arranged at the top of the water tank (2), a first copper block (15) is fixedly arranged at the right side of the buzzer (14), a foam floating plate (11) floats on the top of the disinfectant, and the top fixedly connected with montant (12) of foam floating board (11), the top of montant (12) extends to the top and the fixed mounting of water tank (2) has second copper billet (13), second copper billet (13) are located the top of first copper billet (15) and cooperate with first copper billet (15), sliding sleeve is equipped with rectangular pipe (10) on montant (12), water tank (2) are fixed to be established on rectangular pipe (10), fixedly connected with stopper (16) on the bottom inner wall of water tank (2), first copper billet (15) and bee calling organ (14) are all through flexible conductor and battery (8) electric connection, bee calling organ (14) are through flexible conductor and second copper billet (13) electric connection.
2. The security door with the early warning function according to claim 1, wherein the battery (8), the buzzer (14), the second copper block (13) and the first copper block (15) sequentially form a loop, a first insulating rubber is fixedly bonded to the right side of the buzzer (14), the right side of the first insulating rubber is fixedly bonded to the left side of the first copper block (15), a second insulating rubber is fixedly bonded to the top end of the vertical rod (12), and the top of the second insulating rubber is fixedly bonded to the bottom of the second copper block (13).
3. The security door with the early warning function according to claim 1, wherein the distance between the top of the stopper (16) and the bottom of the water tank (2) is larger than the distance between the bottom end of the L-shaped water inlet pipe (4) and the inner wall of the bottom of the water tank (2), the stopper (16) is located below the foam floating plate (11), and the distance between the top of the stopper (16) and the bottom of the foam floating plate (11) is the same as the distance between the top of the first copper block (15) and the bottom of the second copper block (13).
4. The anti-theft door with the early warning function according to claim 1, wherein a rectangular hole is formed in the inner wall of the top of the water tank (2), and the inner wall of the rectangular hole is slidably connected with the outer side of the rectangular pipe (10).
5. The anti-theft door with the early warning function according to claim 1, wherein a first circular hole is formed in the rear inner wall of the water tank (2), a through hole is formed in the rear inner wall of the anti-theft door main body (100), the side wall of the first circular hole is fixedly connected with the outer side of the water replenishing pipe (9), the water replenishing pipe (9) is located in the through hole, and the inner wall of the through hole is not in contact with the outer side of the water replenishing pipe (9).
6. The anti-theft door with the early warning function according to claim 1, wherein the front inner wall of the anti-theft door main body (100) is provided with two second round holes and a third round hole, the side wall of the second round hole is fixedly bonded with the outer side of the corresponding water outlet pipe (7), the pressing end of the pressing type starting switch (5) is positioned in the third round hole, and the side wall of the third round hole is not contacted with the outer side of the pressing end of the pressing type starting switch (5).
7. The burglar-proof door with the early warning function according to claim 1, wherein the inner side of the pipe cover is provided with an internal thread, and the outer side of the water replenishing pipe (9) is provided with an external thread engaged with the internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021624985.2U CN213144289U (en) | 2020-08-07 | 2020-08-07 | Security door with early warning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021624985.2U CN213144289U (en) | 2020-08-07 | 2020-08-07 | Security door with early warning function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213144289U true CN213144289U (en) | 2021-05-07 |
Family
ID=75737762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021624985.2U Expired - Fee Related CN213144289U (en) | 2020-08-07 | 2020-08-07 | Security door with early warning function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213144289U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575428A (en) * | 2022-03-23 | 2022-06-03 | 韩山师范学院 | Intelligent closestool capable of automatically sterilizing |
| CN115711066A (en) * | 2022-11-05 | 2023-02-24 | 宁波宇精锁具科技有限公司 | Safety door handle |
-
2020
- 2020-08-07 CN CN202021624985.2U patent/CN213144289U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575428A (en) * | 2022-03-23 | 2022-06-03 | 韩山师范学院 | Intelligent closestool capable of automatically sterilizing |
| CN115711066A (en) * | 2022-11-05 | 2023-02-24 | 宁波宇精锁具科技有限公司 | Safety door handle |
| CN115711066B (en) * | 2022-11-05 | 2023-10-20 | 宁波宇精锁具科技有限公司 | Safety door handle |
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Granted publication date: 20210507 |