Self-cleaning antibacterial lock
By adopting a removable guard plate, sleeve, and cover structure on hospital door locks, and using surface-passivated copper alloy or 316L stainless steel with an antibacterial coating, the problems of easy oxidation of hospital door locks in humid environments and easy wear of the antibacterial coating are solved. This achieves low-cost and quick replacement of guard plates and sleeves, while maintaining the antibacterial and self-cleaning effect of the lock.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG XINTANG HAOZHI INTELLIGENT TECH CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-04-24
AI Technical Summary
Existing hospital door lock materials are prone to oxidation in humid environments, and the antibacterial coating is easily worn, resulting in poor stability and antibacterial effect, and high replacement costs.
It adopts a detachable protective plate, sleeve and cover structure, and uses surface passivated copper alloy or 316L stainless steel with antibacterial coating. The protective plate and sleeve are connected by buckles and bolts, which can be replaced separately to avoid human contact and the growth of bacteria.
It enables low-cost and quick replacement of guard plates and covers, maintains the antibacterial and self-cleaning effect of the lock, reduces bacterial growth, and extends service life.
Smart Images
Figure CN224161560U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of door lock technology, specifically a self-cleaning antibacterial lock. Background Technology
[0002] When selecting materials for mechanical door locks in hospital departments and wards, the primary considerations are durability, antibacterial properties, ease of cleaning, security, and corrosion resistance. Common materials include stainless steel, copper alloys, zinc alloys, and aluminum alloys. Copper alloys typically have good natural antibacterial properties and possess bactericidal and bacteriostatic characteristics, achieving a self-cleaning effect. Stainless steel has some antibacterial properties, but it cannot completely kill bacteria, and its self-cleaning effect is poor. Usually, an antibacterial coating such as copper ions or silver nanoparticles is applied to the surface of stainless steel to achieve bactericidal self-cleaning.
[0003] However, copper alloys have poor resistance to zinc oxide oxidation. Frequent cleaning in hospitals, such as wiping and disinfection, along with the humid environment, especially during the rainy season, easily cause copper alloy locks to oxidize and turn green, affecting their appearance. Furthermore, the verdigris can adhere to the hands of medical staff or patients, causing contamination. The locks are also less stable, and since they are usually sold as a set, the overall replacement cost is high, far exceeding that of stainless steel locks, and replacing the entire lock is wasteful. While stainless steel with an antibacterial coating has better stability and is less prone to oxidation and rust, the coating is easily worn away, especially the handles which are in constant contact with medical staff and patients. The coating can easily wear through, affecting its antibacterial effect, requiring periodic repairs or replacement, which is costly and wasteful. Utility Model Content
[0004] Therefore, the purpose of this utility model is to provide a self-cleaning antibacterial lock to solve the technical problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-cleaning antibacterial lock, comprising an outer panel, an inner panel, and a handle. A first protective plate and a second protective plate are connected to the upper side of one side of both the outer and inner panels, and a first buckle is connected to the outer surface and back of the first protective plate. A cover plate extends through one side of the first protective plate, and a retaining spring is provided at one end of the cover plate. A second buckle is connected to the bottom of the cover plate, and a limiting post is fixed to the lower side of one side of the first protective plate. A baffle is connected to one side of the second protective plate, and a third protective sleeve is fixed to one side of the baffle. Third buckles are provided around the third protective sleeve. A first protective sleeve is connected to the top of the handle, and a second protective sleeve is connected to the bottom of the handle, with bolts connecting the second protective sleeve and the first protective sleeve.
[0006] By adopting the above technical solution, the outer and inner panels are covered by the first and second protective plates, preventing them from coming into contact with the human body and breeding bacteria. When the antibacterial effect of the first and second protective plates weakens after prolonged use, they can be replaced individually using the first buckle. The handle, which is most severely worn, is covered by the first and second protective sleeves, preventing it from coming into contact with the human body and breeding bacteria. When the first and second protective sleeves are severely worn, they can be removed and replaced by unscrewing the bolts. The keyhole is covered by a cover plate. When locking or unlocking with a key is required, the cover plate can be rotated open. When locking or unlocking is not required, the cover plate is secured by the second buckle and the limiting post. The cover plate is positioned to prevent it from rotating freely, reducing the possibility of bacteria growth in the keyhole. If the cover plate is damaged, the limiting mechanism can be removed by disassembling the retaining spring, facilitating separate replacement of the cover plate. A third sleeve covers the severely worn deadbolt knob, preventing contact with the human body and bacterial growth. When the third sleeve wears out, it can be replaced along with the cover plate using the third clip. It is important to note that if only the first and second covers need to be replaced, the first, second, cover, and third covers should be disassembled first. They can then be reassembled without replacement, preventing the first, second, cover, and third covers from interfering with the disassembly and reassembly of the first and second covers.
[0007] Furthermore, the first protective plate is detachably connected to the outer panel or the inner panel respectively via the first buckle, and the second protective plate abuts against the first protective plate.
[0008] By adopting the above technical solution, when the antibacterial effect of the first and second protective plates weakens after prolonged use, the first and second protective plates can be replaced separately using the first clip.
[0009] Furthermore, the second guard plate has protrusions on its outer surface and back, and its longitudinal section is "L"-shaped. The top of the first guard plate has an L-shaped groove that matches the second guard plate.
[0010] By adopting the above technical solution, during installation, simply place the second guard plate on top of the outer panel or inner panel, and then install the first guard plate on the surface of the outer panel or inner panel using the first buckle. At this time, the groove in the first guard plate will press down on the second guard plate, thereby preventing the second guard plate from falling off.
[0011] Furthermore, both the first and second sheaths are detachably connected to the handle, and the first sheath is detachably connected to the second sheath via bolts.
[0012] By adopting the above technical solution, when the first and second sheaths are severely worn, they can be disassembled and replaced by removing the bolts.
[0013] Furthermore, the cover plate is rotatably connected to the first guard plate, and the second buckle is detachably connected to the limiting post.
[0014] By adopting the above technical solution, when there is no need to lock or unlock, the cover plate is limited by the second buckle and the limiting post, which prevents the cover plate from rotating at will and reduces the occurrence of bacteria growth in the keyhole.
[0015] Furthermore, the third sheath is detachably connected to the anti-locking knob via a third buckle.
[0016] By adopting the above technical solution, when the third sheath is worn, the third sheath and the baffle can be replaced together through the third buckle.
[0017] Furthermore, a lock cylinder is connected between the outer panel and the inner panel, and a handle is connected to one side of the outer panel and one side of the inner panel. A keyhole is provided at the bottom of one side of the outer panel, and a deadbolt knob is provided at the bottom of one side of the inner panel.
[0018] By adopting the above technical solutions, it is convenient to lock the doors of hospital departments, wards and other rooms, or to prevent external factors such as wind from causing the doors to open after they are closed.
[0019] Furthermore, the first protective plate, the first buckle, the second protective plate, the first protective sleeve, the second protective sleeve, the bolt, the cover plate, the second buckle, the limiting post, the snap ring, the third protective sleeve, the third buckle, and the baffle are all made of copper alloy with surface passivation treatment or 316L stainless steel with antibacterial coating.
[0020] By adopting the above technical solution, the material is made of copper alloy with surface passivation treatment or 316L stainless steel with antibacterial coating, which has good antibacterial and self-cleaning effect, making it difficult for bacteria to adhere and playing a role in sterilization and bacteriostasis.
[0021] Furthermore, the outer panel, inner panel, lock cylinder, handle, and deadbolt knob are all made of 316L stainless steel, and the surfaces of the outer panel, inner panel, lock cylinder, handle, and deadbolt knob are all coated with an 80μm epoxy zinc-rich primer, a 100μm epoxy micaceous iron oxide thick intermediate paint, and a 50μm polyurethane topcoat.
[0022] By adopting the above technical solution, the lock can be effectively isolated from the antibacterial self-cleaning protective structure. The epoxy zinc-rich primer plays a role in cathodic protection and increasing adhesion. The epoxy micaceous iron oxide thick paste intermediate paint plays a role in shielding corrosive media and preventing penetration. The polyurethane topcoat plays a role in weather resistance, wear resistance and filling defects, thereby extending the service life. It avoids galvanic corrosion between copper alloy and 316L stainless steel materials, which would affect the service life of the lock and the antibacterial self-cleaning protective structure.
[0023] In summary, the present invention has the following main advantages:
[0024] 1. This utility model, through the setting of the first protective plate, the first buckle and the second protective plate, covers the outer panel and the inner panel, preventing the outer panel and the inner panel from coming into contact with the human body and breeding bacteria. When the antibacterial effect of the first protective plate and the second protective plate weakens after prolonged use, the first protective plate and the second protective plate can be replaced separately through the first buckle without replacing other parts. Moreover, the first protective plate, the second protective plate and the buckle are small in size and require less material, so the replacement cost is lower. It does not involve disassembling and assembling the lock, so the disassembly and assembly operation is quicker and more convenient.
[0025] 2. This utility model, through the setting of the first protective sleeve, the second protective sleeve and the bolt, covers the handle with the most severe wear by the first and second protective sleeves, avoiding contact between the handle and the human body and the growth of bacteria. When the first and second protective sleeves are severely worn, they can be disassembled and replaced by removing the bolts. There is no need to replace the outer panel, inner panel and other structures with minimal wear, so the replacement cost is lower and there is no need to disassemble and reassemble the lock. Therefore, the disassembly and assembly operation is quicker and more convenient.
[0026] 3. This utility model, through the setting of a cover plate, a second buckle, a limiting post, and a retaining spring, uses a cover plate to cover the keyhole. When it is necessary to lock or unlock with a key, the cover plate can be rotated to open. When it is not necessary to lock or unlock, the second buckle and the limiting post limit the cover plate to prevent it from rotating freely, reducing the occurrence of bacteria growth in the keyhole. Furthermore, if the cover plate is damaged, the limiting of the cover plate can be ended by removing the retaining spring, which makes it easy to replace the cover plate separately without involving the disassembly and assembly of the lock. Therefore, the disassembly and assembly operation is quicker and more convenient.
[0027] 4. This utility model, through the setting of a third protective sleeve, a third buckle and a baffle, uses the third protective sleeve to cover the severely worn deadbolt knob, preventing the deadbolt knob from coming into contact with the human body and breeding bacteria. When the third protective sleeve is worn, the third protective sleeve and the baffle can be replaced together through the third buckle without replacing other parts, which is low-cost and does not involve disassembling and assembling the lock. Therefore, the disassembly and assembly operation is quicker and more convenient. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the structure of this utility model;
[0029] Figure 2 This is a schematic diagram of the outer panel structure of this utility model;
[0030] Figure 3 This is a schematic diagram of the explosion structure of the first sheath of this utility model;
[0031] Figure 4 This is a schematic diagram of the exploded structure of the first protective plate of this utility model;
[0032] Figure 5 This is a schematic diagram of the cover plate structure of this utility model;
[0033] Figure 6 This is a schematic diagram of the cross-sectional structure of the third sheath of this utility model.
[0034] In the diagram: 1. Outer panel; 2. Inner panel; 3. Lock cylinder; 4. Handle; 5. Keyhole; 6. Deadbolt knob; 7. First guard plate; 8. First latch; 9. Second guard plate; 10. First sleeve; 11. Second sleeve; 12. Bolt; 13. Cover plate; 14. Second latch; 15. Limiting post; 16. Snap ring; 17. Third sleeve; 18. Third latch; 19. Baffle. Detailed Implementation
[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0036] The embodiments of this utility model will be described below based on its overall structure.
[0037] Example 1:
[0038] A self-cleaning antibacterial lock, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the device includes an outer panel 1, an inner panel 2, and a handle 4. A first protective plate 7 and a second protective plate 9 are connected to the upper side of both the outer panel 1 and the inner panel 2. The outer surface and back of the second protective plate 9 are provided with protrusions. The longitudinal section of the second protective plate 9 is "L"-shaped. The top of the first protective plate 7 is provided with an L-shaped groove that matches the second protective plate 9. The outer surface and back of the first protective plate 7 are connected with a first buckle 8. The first protective plate 7 is detachably connected to the outer panel 1 or the inner panel 2 through the first buckle 8. The second protective plate 9 abuts against the first protective plate 7. The first protective plate 7 and the second protective plate 9 cover the outer panel 1 and the inner panel 2 to prevent the outer panel 1 and the inner panel 2 from coming into contact with the human body and breeding bacteria. When the antibacterial effect of the first protective plate 7 and the second protective plate 9 weakens after prolonged use, the first protective plate 7 and the second protective plate 9 can be replaced separately through the first buckle 8.
[0039] A cover plate 13 extends through one side of the first guard plate 7. The cover plate 13 is rotatably connected to the first guard plate 7. A retaining spring 16 is provided at one end of the cover plate 13. A second buckle 14 is connected to the bottom of the cover plate 13. A limiting post 15 is fixed below one side of the first guard plate 7. The second buckle 14 is detachably connected to the limiting post 15. The keyhole 5 is covered by the cover plate 13. When it is necessary to lock or unlock with a key, the cover plate 13 can be rotated to open. When it is not necessary to lock or unlock, the cover plate 13 is limited by the second buckle 14 and the limiting post 15 to prevent the cover plate 13 from rotating at will and reduce the occurrence of bacteria growth in the keyhole 5. After the cover plate 13 is damaged, the limiting of the cover plate 13 can be stopped by removing the retaining spring 16, so that the cover plate 13 can be replaced separately.
[0040] A baffle 19 is connected to one side of the second protective plate 9. A third protective sleeve 17 is fixed to one side of the baffle 19. Third buckles 18 are provided around the third protective sleeve 17. The third protective sleeve 17 covers the severely worn dead lock knob 6 to prevent the dead lock knob 6 from coming into contact with the human body and breeding bacteria. When the third protective sleeve 17 is worn, the third protective sleeve 17 and the baffle 19 can be replaced together through the third buckles 18.
[0041] The top of the handle 4 is connected to a first protective sleeve 10, and the bottom of the handle 4 is connected to a second protective sleeve 11. Both the first protective sleeve 10 and the second protective sleeve 11 are detachably connected to the handle 4. A bolt 12 connects the second protective sleeve 11 and the first protective sleeve 10. The first protective sleeve 10 is detachably connected to the second protective sleeve 11 through the bolt 12. The first protective sleeve 10 and the second protective sleeve 11 cover the handle 4, which is the most severely worn, to prevent the handle 4 from coming into contact with the human body and breeding bacteria. When the first protective sleeve 10 and the second protective sleeve 11 are severely worn, they can be removed by removing the bolt 12 to disassemble and replace them.
[0042] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 In the above embodiment, a lock cylinder 3 is connected between the outer panel 1 and the inner panel 2. A handle 4 is connected to one side of the outer panel 1 and one side of the inner panel 2. A keyhole 5 is provided at the bottom of one side of the outer panel 1, and a deadbolt knob 6 is provided at the bottom of one side of the inner panel 2, so as to facilitate locking the doors of hospital departments, wards and other rooms or to prevent the doors from being opened by external factors such as wind after closing.
[0043] Example 2:
[0044] Based on the above embodiment one, in order to be suitable for environments with requirements on appearance, high humidity, etc., the following settings are now adopted.
[0045] See Figures 1-6In the above embodiment, the outer panel 1, inner panel 2, lock cylinder 3, handle 4, and deadbolt 6 are all made of 316L stainless steel. The first guard plate 7, first buckle 8, second guard plate 9, first sleeve 10, second sleeve 11, bolt 12, cover plate 13, second buckle 14, limit post 15, snap ring 16, third sleeve 17, third buckle 18, and baffle 19 are all made of 316L stainless steel with an antibacterial coating. 316L stainless steel with an antibacterial coating can be selected. In this case, the surfaces of the outer panel 1, inner panel 2, lock cylinder 3, handle 4, and deadbolt 6 do not need to be coated with primer, intermediate paint, and topcoat.
[0046] Example 3:
[0047] Based on the above embodiment one, in order to be applicable to environments where appearance is not a requirement, low humidity environments, etc., the following settings are now adopted.
[0048] See Figures 1-6 In the above embodiments, the first protective plate 7, the first buckle 8, the second protective plate 9, the first protective sleeve 10, the second protective sleeve 11, the bolt 12, the cover plate 13, the second buckle 14, the limiting post 15, the snap ring 16, the third protective sleeve 17, the third buckle 18, and the baffle 19 are all made of copper alloy with surface passivation treatment. The outer panel 1, the inner panel 2, the lock cylinder 3, the handle 4, and the deadbolt knob 6 are all coated with 80μm epoxy zinc-rich primer, 100μm epoxy micaceous iron oxide thick intermediate paint, and 50μm polyurethane topcoat. Copper alloy can be used to make the antibacterial and self-cleaning protective structure, and the passivation of the copper alloy surface extends the oxidation and greening time, thereby extending the antibacterial and self-cleaning protective effect. While extending the service life of the protective structure, the surfaces of the outer panel 1, inner panel 2, lock cylinder 3, handle 4, and deadbolt knob 6 need to be coated with an 80μm epoxy zinc-rich primer, a 100μm epoxy micaceous iron oxide thick intermediate coat, and a 50μm polyurethane topcoat. This effectively isolates the lock from the antibacterial self-cleaning protective structure. The epoxy zinc-rich primer provides cathodic protection and increases adhesion, the epoxy micaceous iron oxide thick intermediate coat shields corrosive media and resists penetration, and the polyurethane topcoat provides weather resistance, wear resistance, and fills defects, thereby extending the service life and preventing galvanic corrosion between the copper alloy and 316L stainless steel, which could affect the service life of the lock and the antibacterial self-cleaning protective structure.
[0049] The implementation principle of this utility model is as follows: First, this self-cleaning antibacterial lock is composed of an outer panel 1, an inner panel 2, a lock cylinder 3, a handle 4, a keyhole 5, a deadbolt knob 6, and other existing door lock structures, performing the functions of a traditional lock. Its functions and materials are the same as those of traditional mechanical locks used in hospitals. Specific structures and details are not elaborated in this technical solution. The components include a first protective plate 7, a first buckle 8, a second protective plate 9, a first protective sleeve 10, a second protective sleeve 11, a bolt 12, a cover plate 13, a second buckle 14, a limiting post 15, and a retaining spring 16. The third sheath 17, the third buckle 18, and the baffle 19 form an antibacterial self-cleaning protective structure, which provides an antibacterial and self-cleaning effect for traditional locks. The lock and the antibacterial self-cleaning protective structure are independent of each other, so replacing the antibacterial self-cleaning protective structure will not involve disassembling the lock, making the operation simpler and more convenient, and eliminating the need for professional lock repair and replacement personnel to come to the site for replacement. At the same time, since the wear and aging rates of each component are different, replacing a single antibacterial self-cleaning protective structure is more cost-effective than replacing the entire lock.
[0050] The outer panel 1 and inner panel 2 are covered by the first protective plate 7 and the second protective plate 9 to prevent them from coming into contact with the human body and breeding bacteria. When the antibacterial effect of the first protective plate 7 and the second protective plate 9 weakens after prolonged use, they can be replaced individually using the first buckle 8. The handle 4, which is the most severely worn, is covered by the first protective sleeve 10 and the second protective sleeve 11 to prevent it from coming into contact with the human body and breeding bacteria. When the first protective sleeve 10 and the second protective sleeve 11 are severely worn, they can be removed and replaced by removing the bolt 12. The keyhole 5 is covered by the cover plate 13. When locking or unlocking with a key is required, the cover plate 13 can be rotated to open. When locking or unlocking is not required, the cover plate 13 is limited by the second buckle 14 and the limiting post 15 to prevent the cover plate from being locked. 13 can be rotated freely, reducing the occurrence of bacteria growth in the keyhole 5. Furthermore, if the cover plate 13 is damaged, the limiting effect on the cover plate 13 can be removed by disassembling the retaining spring 16, making it easy to replace the cover plate 13 separately. The severely worn deadbolt knob 6 is covered by the third sleeve 17, preventing it from coming into contact with the human body and causing bacterial growth. When the third sleeve 17 is worn, it can be replaced together with the baffle 19 using the third buckle 18. It should be noted that if only the first guard plate 7 and the second guard plate 9 need to be replaced, the first sleeve 10, the second sleeve 11, the cover plate 13, and the third sleeve 17 should be disassembled first. They can then be reassembled without replacement, preventing the first sleeve 10, the second sleeve 11, the cover plate 13, and the third sleeve 17 from interfering with the disassembly and reassembly of the first guard plate 7 and the second guard plate 9.
[0051] The outer panel 1, inner panel 2, lock cylinder 3, handle 4, and deadbolt knob 6 are made of 316L stainless steel, which has a certain antibacterial effect. The first guard plate 7, first buckle 8, second guard plate 9, first sleeve 10, second sleeve 11, bolt 12, cover plate 13, second buckle 14, limit post 15, snap ring 16, third sleeve 17, third buckle 18, and baffle 19 are made of copper alloy with surface passivation treatment or 316L stainless steel with antibacterial coating, which has a good antibacterial and self-cleaning effect, making it difficult for bacteria to adhere and playing a sterilization and bacteriostatic effect.
[0052] If the appearance is not a concern, a copper alloy can be used to make the antibacterial self-cleaning protective structure. The passivation of the copper alloy surface extends the oxidation and greening time, thereby extending the service life of the antibacterial self-cleaning protective structure. However, the outer panel 1, inner panel 2, lock cylinder 3, handle 4, and deadbolt knob 6 need to be coated with an 80μm epoxy zinc-rich primer, a 100μm epoxy micaceous iron oxide thick paste intermediate paint, and a 50μm polyurethane topcoat. This effectively isolates the lock from the antibacterial self-cleaning protective structure. The epoxy zinc-rich primer provides cathodic protection and increases adhesion, the epoxy micaceous iron oxide thick paste intermediate paint shields corrosive media and prevents penetration, and the polyurethane topcoat provides weather resistance, wear resistance, and fills defects, thereby extending the service life and preventing galvanic corrosion between the copper alloy and 316L stainless steel, which would affect the service life of the lock and the antibacterial self-cleaning protective structure.
[0053] If the environment requires attention to appearance and it is necessary to avoid the formation of verdigris that would affect aesthetics and prevent adhesion, 316L stainless steel with an antibacterial coating can be used. In this case, the surfaces of the outer panel 1, inner panel 2, lock cylinder 3, handle 4, and deadbolt knob 6 do not need to be coated with primer, intermediate paint, and topcoat.
[0054] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. A self-cleaning antibacterial lock, comprising an outer panel, an inner panel, and a handle, characterized in that: The outer panel and the inner panel are each connected to a first protective plate and a second protective plate on one side. The outer surface and back of the first protective plate are each connected to a first buckle. A cover plate extends through one side of the first protective plate, and a retaining spring is provided at one end of the cover plate. A second buckle is connected to the bottom of the cover plate. A limit post is fixed to the lower side of one side of the first protective plate. A baffle is connected to one side of the second protective plate, and a third protective sleeve is fixed to one side of the baffle. A third buckle is provided around the third protective sleeve. The top of the handle is connected to the first protective sleeve, and the bottom of the handle is connected to the second protective sleeve. A bolt connects the second protective sleeve and the first protective sleeve.
2. The self-cleaning antibacterial lock according to claim 1, characterized in that: The first guard plate is detachably connected to the outer panel or the inner panel via a first buckle, and the second guard plate abuts against the first guard plate.
3. The self-cleaning antibacterial lock according to claim 2, characterized in that: The second guard plate has protrusions on its outer surface and back, and its longitudinal section is "L" shaped. The top of the first guard plate has an L-shaped groove that matches the second guard plate.
4. The self-cleaning antibacterial lock according to claim 1, characterized in that: Both the first and second sheaths are detachably connected to the handle, and the first sheath is detachably connected to the second sheath by bolts.
5. The self-cleaning antibacterial lock according to claim 1, characterized in that: The cover plate is rotatably connected to the first guard plate, and the second buckle is detachably connected to the limiting post.
6. The self-cleaning antibacterial lock according to claim 1, characterized in that: The third sheath is detachably connected to the anti-locking knob via a third buckle.
7. The self-cleaning antibacterial lock according to claim 1, characterized in that: A lock cylinder is connected between the outer panel and the inner panel. A handle is connected to one side of the outer panel and one side of the inner panel. A keyhole is provided at the bottom of one side of the outer panel, and a deadbolt knob is provided at the bottom of one side of the inner panel.
8. The self-cleaning antibacterial lock according to claim 6, characterized in that: The first protective plate, the first buckle, the second protective plate, the first protective sleeve, the second protective sleeve, the bolt, the cover plate, the second buckle, the limiting post, the snap ring, the third protective sleeve, the third buckle, and the baffle are all made of copper alloy with surface passivation treatment or 316L stainless steel with antibacterial coating.
9. The self-cleaning antibacterial lock according to claim 7, characterized in that: The outer panel, inner panel, lock cylinder, handle, and deadbolt knob are all made of 316L stainless steel. The surfaces of the outer panel, inner panel, lock cylinder, handle, and deadbolt knob are coated with an 80μm epoxy zinc-rich primer, a 100μm epoxy micaceous iron oxide thick intermediate coat, and a 50μm polyurethane topcoat.