Anti-theft door lock with low failure rate

Abstract

The utility model relates to the field of anti-theft door locks, and discloses a low-failure-rate anti-theft door lock which comprises an inner main body and an outer main body, a first lock is rotatably arranged at the position, close to the lower portion of the front end, in the inner main body in a penetrating mode, and a second lock is rotatably arranged at the position, close to the upper portion of the first lock, in the inner main body in a penetrating mode. A third lock is rotationally arranged in the inner body and located over the second lock in a penetrating mode, the middle of the third lock is sleeved with a shell, and an upper table body is fixedly arranged on the side, away from the third lock, of the shell. According to the door lock, when the door lock is opened and closed in daily life, the rotating part of the internal lock can be lubricated, maintenance can be carried out without disassembly, blocking is prevented, maintenance of the door lock is simplified, the failure rate is greatly reduced, meanwhile, the filter screen of the door lock is arranged in a clamped mode, disassembly and assembly are convenient, and it is guaranteed that the door lock has good dustproof performance for a long time; and faults caused by excessive dust entering are avoided.

Description

Technical Field

[0001] The utility model relates to the field of anti-theft door locks, in particular to an anti-theft door lock with a low failure rate. Background Art

[0002] Anti-theft door locks are a type of door lock installed on doors to improve anti-theft performance. Compared with traditional door locks, they are usually more intelligent and safer, bringing more security to residents' lives and are an important line of defense for residents' property safety.

[0003] Because of its intelligent nature, anti-theft door locks are usually complex in structure and not easy to disassemble. If the internal door lock is not lubricated regularly, it is easy to cause jamming. Existing anti-theft door locks generally need to be disassembled to repair and maintain the rotating part of the door lock. Therefore, few users will perform maintenance work on the inside of the lock. Under long-term use, it is easy to cause jamming without lubrication, which has a great impact on the use of the door. At the same time, existing anti-theft door locks usually do not have good dustproof functions. Some of the filters are generally not easy to disassemble and clean. Once dust enters and accumulates too much, it will also cause door lock failure.

[0004] Therefore, those skilled in the art provide an anti-theft door lock with a low failure rate to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an anti-theft door lock with a low failure rate. The door lock can lubricate the rotating part of the internal lock during daily opening and closing, and can be maintained without disassembly to prevent jamming, thereby simplifying the maintenance of the door lock and greatly reducing the failure rate. At the same time, the filter of the door lock adopts a card connection setting, which is easy to disassemble and install, ensuring long-term good dustproof performance and avoiding failures caused by excessive dust entry.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-theft door lock with a low failure rate, comprising an inner body and an outer body, wherein a No. 1 lock is rotatably provided at the lower part of the front end of the inner body, a No. 2 lock is rotatably provided at the upper part of the inner body, a No. 3 lock is rotatably provided at the upper part of the inner body, a housing is provided at the middle part of the No. 3 lock, an upper platform is fixedly provided at the side of the housing away from the No. 3 lock, sliding platforms are fixedly provided at the upper parts of both sides of the upper platform, a sliding block is slidably provided at the upper end of the sliding platform, and an oil drain hole is provided at one side of the upper end of the sliding block;

[0007] Extrusion blocks are slidably provided at both sides of the lower end of the upper platform, a lubricating oil bag is provided at the middle of the upper platform, and air bags are sleeved around the parts of the two extrusion blocks located inside the upper platform, baffles are fixedly provided at both sides of the lower end of the upper platform, reset blocks are slidably provided inside the two baffles, a No. 1 spring is provided between the two reset blocks and the adjacent baffles, top blocks are fixedly provided at the upper and lower ends of the No. 3 lock near the direction of the external main body, an oil pipeline is penetrated at the middle of the lower end of the upper platform, and drippers are provided around the oil pipeline near the No. 1 lock, the No. 2 lock and the No. 3 lock, and a closing block is slidably provided at the other side of the internal body near the sliding block;

[0008] A filter screen is provided in the outer body near the inner body, and a filter screen frame is fixedly provided around the filter screen. Blocks are provided to slide through the upper and lower ends of the filter screen frame, and a second spring is provided between the two blocks and the filter screen frame.

[0009] Through the above technical scheme, when the No. 3 lock is rotated, the top blocks at the upper and lower ends of the No. 3 lock will push the extrusion blocks on both sides to both sides. At this time, the two extrusion blocks will squeeze the airbag. Since the airbag is filled with gas, it will squeeze the lubricating oil bag in the process of moving to the middle. At this time, the lubricating oil bag can squeeze the lubricating oil from the oil pipe. When the lubricating oil flows through the dripper, it will lubricate the No. 1 lock, the No. 2 lock and the No. 3 lock. When the lubricating oil is insufficient, the closing block can be opened and the sliding block can be pulled out to replenish the oil. The filter is placed in the card slot of the external main body by pressing the card blocks at its upper and lower ends. When you release your hand, you can use the reset of the No. 2 spring to achieve the card connection setting, which is convenient for disassembly and cleaning.

[0010] Furthermore, an oil inlet pipe is provided at the lower end of the oil drain hole, the oil outlet of the oil inlet pipe is connected with the oil inlet of the lubricating oil bag, and the lower tube body of the oil inlet pipe is a hose made of polyurethane material, which is relatively long and thin;

[0011] Through the above technical solution, the polyurethane has good oil resistance, the lubricating oil can slowly move down to the lubricating oil bag along the hose, and the air circulation inside and outside is reduced as much as possible, so that the lubricating oil bag can better squeeze the lubricating oil down along the oil pipeline after being squeezed.

[0012] Furthermore, the airbag is filled with gas, and the airbag covers the space inside the upper platform except the upper part of the extrusion block and the lubricating oil bag;

[0013] Through the above technical solution, the movement of the squeezing block can squeeze the air bag and also squeeze the lubricating oil bag.

[0014] Furthermore, the two reset blocks are fixedly connected to the adjacent extrusion blocks on one side close to the No. 3 lock, and a slide groove is provided inside the lower end of the upper platform near the extrusion block, and the opening area of ​​the slide groove is smaller than the bottom area of ​​the extrusion block located on the upper platform;

[0015] Through the above technical solution, the extrusion block can be pushed more stably and reset by the reset block.

[0016] Furthermore, the oil delivery pipe is relatively long, and each section thereof is partially placed not far from the upper ends of the No. 1 lock, the No. 2 lock, and the No. 3 lock. The dripper mainly uses a dripping oil lubrication method for the rotating parts of each lock;

[0017] Through the above technical solution, the lubricating oil can flow through the dripper during the flow process in the oil pipeline, and lubricate the rotating parts of each lock by dripping oil.

[0018] Furthermore, the oil outlet of the lubricating oil bag is connected to the oil inlet of the oil pipeline, and the material of the lubricating oil bag is nitrile rubber;

[0019] Through the above technical solution, nitrile rubber has relatively soft characteristics, has good bending and tensile properties at room temperature, can adapt to application needs of different shapes and sizes, and has good oil resistance.

[0020] Furthermore, the sliding platform is composed of two rod bodies, and the portion of the sliding block close to the oil inlet pipe is located between the two rod bodies of the sliding platform;

[0021] Through the above technical solution, the sliding block can move along the sliding platform. When the lubricating oil is insufficient, the closing block can be opened and the sliding block can be pulled out to replenish the oil.

[0022] Furthermore, the upper and lower ends of the side of the outer body close to the filter screen are provided with a card slot, and the filter screen is connected by two card blocks and the card slot;

[0023] Through the above technical solution, the filter screen is snap-connected with the external body, which is convenient for disassembly and installation and improves the dust-proof capability.

[0024] The utility model has the following beneficial effects:

[0025] 1. The utility model proposes an anti-theft door lock with a low failure rate. The door lock can realize internal lubrication during daily door opening and closing. The internal lock can be maintained without disassembly, which greatly reduces the occurrence of door lock jams. Only the No. 3 lock needs to be turned to push the extrusion block to squeeze the airbag, and the airbag further squeezes the lubricating oil bag to make the lubricating oil drip from the dripper along the oil pipe to the parts of each lock that often need to rotate. The lubricating oil can be replenished by opening the closing block and pulling out the sliding block, which makes the maintenance of the door lock more convenient and greatly reduces the failure rate of the door lock.

[0026] 2. The utility model proposes an anti-theft door lock with a low failure rate. The filter screen of the door lock can be quickly disassembled and installed. The filter screen can be removed from the external body by pressing the two blocks at the upper and lower ends, which is convenient for subsequent cleaning. It can be used for a long time and ensures good dustproof performance, preventing dust from entering the door lock and accumulating too much, causing door lock failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an axonometric diagram close to the internal body of the utility model;

[0028] Figure 2 It is an axonometric diagram of the utility model close to the external body;

[0029] Figure 3 It is a partial axonometric cross-sectional schematic diagram close to the sliding block of the utility model;

[0030] Figure 4 It is a partial front cross-sectional schematic diagram of the utility model near the top block;

[0031] Figure 5 It is a side view schematic diagram of the utility model close to the closing block;

[0032] Figure 6 It is a partial front sectional schematic diagram of the utility model near the first spring;

[0033] Figure 7 It is a partial front sectional schematic diagram of the utility model near the second spring.

[0034] Legend:

[0035] 1. Inner body; 2. Outer body; 3. Lock No. 1; 4. Lock No. 2; 5. Lock No. 3; 6. Filter; 7. Baffle; 8. Upper platform; 9. Air bag; 10. Outer shell; 11. Sliding block; 12. Oil drain hole; 13. Sliding platform; 14. Extrusion block; 15. Lubricating oil bag; 16. Reset block; 17. Top block; 18. Drip head; 19. Oil pipeline; 20. Oil inlet pipe; 21. Closing block; 22. Spring No. 1; 23. Block; 24. Spring No. 2; 25. Filter frame. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Reference Figure 1-7 The utility model provides an embodiment: an anti-theft door lock with a low failure rate, comprising an inner body 1 and an outer body 2, wherein a No. 1 lock 3 is rotatably provided at the lower part of the front end of the inner body 1, a No. 2 lock 4 is rotatably provided at the upper part of the inner body 1, a No. 3 lock 5 is rotatably provided at the upper part of the inner body 1 just above the No. 2 lock 4, a No. 3 lock 5 is rotatably provided at the upper part of the inner body 1 just above the No. 2 lock 4, a housing 10 is sleeved around the No. 3 lock 5 at the middle part, an upper platform 8 is fixedly provided at the side of the housing 10 away from the No. 3 lock 5, sliding platforms 13 are fixedly provided at the upper parts of both sides of the upper platform 8, a sliding block 11 is slidably provided at the upper end of the sliding platform 13, and an oil drain hole 12 is provided at the upper end of the sliding block 11 at one side;

[0038] The outer shell 10 is the outer component of the inner body 1. The sliding platform 13 is composed of two rods, on which the sliding block 11 can slide, so that it is convenient to draw out and replenish oil. The sliding block 11 is wide at the top and narrow at the bottom, with the wide part at the top of the sliding platform 13 and the narrow part between the two rods, so that the sliding block 11 can slide stably.

[0039] Extrusion blocks 14 are slidably provided at both sides of the lower end of the upper platform 8, a lubricating oil bag 15 is provided at the middle of the upper platform 8, and air bags 9 are sleeved around the parts of the two extrusion blocks 14 located inside the upper platform 8, baffles 7 are fixedly provided at both sides of the lower end of the upper platform 8, reset blocks 16 are slidably provided inside the two baffles 7, and a No. 1 spring 22 is provided between the two reset blocks 16 and the adjacent baffles 7, and a top block 17 is fixedly provided at the upper and lower ends of the No. 3 lock 5 near the direction of the external main body 2, an oil pipeline 19 is penetrated at the middle of the lower end of the upper platform 8, and drippers 18 are provided around the oil pipeline 19 near the No. 1 lock 3, the No. 2 lock 4 and the No. 3 lock 5, and a closing block 21 is slidably provided at the other side of the internal main body 1 near the sliding block 11;

[0040] The lubricating oil bag 15 is made of nitrile rubber. When the extrusion block 14 is pushed by the rotation of the No. 3 lock 5, it will squeeze the air bag 9. At this time, the air bag 9 will squeeze the lubricating oil bag 15, so that the lubricating oil can move down along the oil pipe 19. Due to the characteristics of the lubricating oil and the thin oil pipe 19, the internal part needs to be squeezed to make the lubricating oil move further downward. The oil outlet of the dripper 18 is aligned with the rotating part of each lock, and lubrication can be achieved by using the dead weight of the lubricating oil.

[0041] A filter screen 6 is provided in the outer body 2 near the inner body 1, and a filter screen frame 25 is fixedly provided around the filter screen 6. A clamping block 23 is provided inside the upper and lower ends of the filter screen frame 25 for sliding. A second spring 24 is provided between the two clamping blocks 23 and the filter screen frame 25. The clamping block 23 can be pressed to realize the clamping connection with the outer body 2, and the disassembly is convenient.

[0042] When the No. 3 lock 5 is rotated, the top blocks 17 at the upper and lower ends of the No. 3 lock 5 will push the squeezing blocks 14 on both sides to both sides. At this time, the two squeezing blocks 14 will squeeze the airbag 9. Since the airbag 9 is filled with gas, it will squeeze the lubricating oil bag 15 in the process of moving to the middle. At this time, the lubricating oil bag 15 can squeeze the lubricating oil from the oil pipe 19. When the lubricating oil flows through the dripper 18, it will lubricate the No. 1 lock 3, the No. 2 lock 4 and the No. 3 lock 5. When the lubricating oil is insufficient, the closing block 21 can be opened to pull out the sliding block 11 for oil replenishment. The filter screen 6 is placed in the card slot of the external main body 2 by pressing the card blocks 23 at its upper and lower ends. When the hand is released, the card connection setting can be realized by resetting the No. 2 spring 24, which is convenient for disassembly and cleaning;

[0043] An oil inlet pipe 20 is provided at the lower end of the oil drain hole 12, and the oil outlet of the oil inlet pipe 20 is connected with the oil inlet of the lubricating oil bag 15. The lower tube body of the oil inlet pipe 20 is a hose made of polyurethane material. The hose is long and thin, and the polyurethane has good oil resistance. The lubricating oil can slowly move down to the lubricating oil bag 15 along the hose, and reduce the air circulation inside and outside as much as possible, so that the lubricating oil bag 15 can better squeeze the lubricating oil along the oil delivery pipe 19 after being squeezed. The airbag 9 is filled with gas, and the airbag 9 covers the space inside the upper platform 8 except the upper part of the squeezing block 14 and the lubricating oil bag 15, so that the movement of the squeezing block 14 can squeeze the airbag 9 and the lubricating oil bag 15 is also squeezed. The two reset blocks 16 are fixedly connected to the adjacent squeezing block 14 near the side of the No. 3 lock 5, and a slide groove is opened inside the lower end of the upper platform 8 near the squeezing block 14. The opening area of ​​the slide groove is smaller than the bottom area of ​​the squeezing block 14 located at the upper platform 8, so that the squeezing block 14 can be pushed more stably and reset by the reset block 16;

[0044] The oil delivery pipe 19 is relatively long, and each section thereof is partially placed not far from the upper ends of the No. 1 lock 3, the No. 2 lock 4 and the No. 3 lock 5. The dripper 18 mainly adopts the method of dripping oil lubrication for the rotating parts of each lock, so that the lubricating oil can flow through the oil delivery pipe 19. When the lubricating oil flows through the dripper 18, the rotating parts of each lock are lubricated by dripping oil. The oil outlet of the lubricating oil bag 15 is connected with the oil inlet of the oil delivery pipe 19. The lubricating oil bag 15 is made of nitrile rubber, which has relatively soft characteristics and good bending and stretching properties at room temperature, and can adapt to different shapes and sizes. The sliding platform 13 is composed of two rods, and the part of the sliding block 11 close to the oil inlet pipe 20 is between the two rods of the sliding platform 13. When the lubricating oil is insufficient, the closing block 21 can be opened, and the sliding block 11 can be pulled out to replenish the oil. The upper and lower ends of the side of the outer body 2 close to the filter screen 6 are provided with card slots. The filter screen 6 is connected by two card blocks 23 and the card slots, so that the filter screen 6 is connected to the outer body 2 by card connection, which is convenient for disassembly and installation and improves the dustproof ability.

[0045] Working principle: When the door lock is used in daily life, every time the No. 3 lock 5 is turned, the two top blocks 17 will push the extrusion block 14. At this time, the upper end of the extrusion block 14 will squeeze the airbag 9, causing the airbag 9 to squeeze toward the lubricating oil bag 15. Since the oil inlet pipe 20 and the oil delivery pipe 19 are relatively thin and contain lubricating oil, the gas inside the lubricating oil bag 15 is limited. Under extrusion, the lubricating oil flows along the oil delivery pipe 19 through the dripper 18, and each lock is lubricated by the dripper 18. At the same time, after the extrusion block 14 squeezes the reset block 16, the extrusion block 14 can be reset due to the reset of the No. 1 spring 22. If the internal lubricating oil is insufficient, the closing block 21 can be pushed upward, and the sliding block 11 can be moved out along the sliding platform 13 for oil replenishment. At this time, the lubricating oil will flow into the lubricating oil bag 15 through the oil inlet pipe 20. When the filter screen 6 of the device needs to be cleaned of dust attached thereto, it can be disassembled by pressing the card blocks 23 at the upper and lower ends.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-theft door lock with a low failure rate, comprising an inner body (1) and an outer body (2), characterized in that: A No. 1 lock (3) is rotatably provided inside the inner body (1) at the lower front end thereof, a No. 2 lock (4) is rotatably provided inside the inner body (1) just above the No. 1 lock (3), a No. 3 lock (5) is rotatably provided inside the inner body (1) just above the No. 2 lock (4), a housing (10) is sleeved around the No. 3 lock (5) at the middle thereof, an upper platform (8) is fixedly provided at the side of the housing (10) away from the No. 3 lock (5), sliding platforms (13) are fixedly provided at the upper sides of the upper platform (8), a sliding block (11) is slidably provided at the upper end of the sliding platform (13), and an oil drain hole (12) is provided at one side of the upper end of the sliding block (11); Extrusion blocks (14) are slidably arranged on both sides of the lower end of the upper platform (8), a lubricating oil bag (15) is arranged in the middle of the upper platform (8), and air bags (9) are arranged around the parts of the two extrusion blocks (14) located inside the upper platform (8). Baffles (7) are fixedly arranged on both sides of the lower end of the upper platform (8), and reset blocks (16) are slidably arranged inside the two baffles (7). The two reset blocks (16) are connected to adjacent baffles (7). A No. 1 spring (22) is arranged between the No. 3 lock (5), the No. 3 lock (5) is fixedly provided with a top block (17) at the upper and lower ends near the direction of the external main body (2), an oil delivery pipe (19) is arranged through the middle of the lower end of the upper platform (8), and a dripper (18) is arranged on the oil delivery pipe (19) near the No. 1 lock (3), the No. 2 lock (4) and the No. 3 lock (5), and a closing block (21) is arranged on the other side of the internal main body (1) near the sliding block (11) for locking and sliding connection; A filter screen (6) is provided in a clamped manner inside the outer body (2) near the inner body (1); a filter screen frame (25) is fixedly provided around the filter screen (6); clamping blocks (23) are slidably provided inside the upper and lower ends of the filter screen frame (25); and a second spring (24) is provided between the two clamping blocks (23) and the filter screen frame (25).

2. The anti-theft door lock with low failure rate according to claim 1, characterized in that: An oil inlet pipe (20) is arranged at the lower end of the oil drain hole (12); the oil outlet of the oil inlet pipe (20) is connected to the oil inlet of the lubricating oil bag (15); the lower tube body of the oil inlet pipe (20) is a relatively long hose made of polyurethane material.

3. The anti-theft door lock with low failure rate according to claim 1, characterized in that: The airbag (9) is filled with gas, and the airbag (9) covers the space inside the upper platform (8) except the upper part of the extrusion block (14) and the lubricating oil bag (15).

4. The anti-theft door lock with low failure rate according to claim 1, characterized in that: The two reset blocks (16) are fixedly connected to the adjacent extrusion block (14) on one side close to the No. 3 lock (5), and a slide groove is provided inside the lower end of the upper platform (8) close to the extrusion block (14), and the opening area of ​​the slide groove is smaller than the bottom area of ​​the extrusion block (14) located on the upper platform (8).

5. The anti-theft door lock with low failure rate according to claim 1, characterized in that: The oil delivery pipe (19) is relatively long, and each section thereof is partially placed not far from the upper ends of the No. 1 lock (3), the No. 2 lock (4) and the No. 3 lock (5). The dripper (18) mainly adopts a method of dripping oil to lubricate the rotating parts of each lock.

6. The anti-theft door lock with low failure rate according to claim 1, characterized in that: The oil outlet of the lubricating oil bag (15) is communicated with the oil inlet of the oil delivery pipe (19), and the material of the lubricating oil bag (15) is nitrile rubber.

7. The anti-theft door lock with low failure rate according to claim 1, characterized in that: The sliding platform (13) is composed of two rod bodies, and the portion of the sliding block (11) close to the oil inlet pipe (20) is located between the two rod bodies of the sliding platform (13).

8. The anti-theft door lock with low failure rate according to claim 1, characterized in that: The upper and lower ends of the side of the external body (2) close to the filter screen (6) are provided with card slots, and the filter screen (6) is connected to the card slots by two card blocks (23).

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