Anti-theft building entrance door lock

Abstract

The utility model relates to the technical field of house door lock, disclose a theftproof building house door lock, including backplate, the backplate front end fixedly arranged with the protection frame, the protection frame inside front end is provided with cleaning mechanism, the cleaning mechanism includes connecting block, both sides of connecting block all are fixedly arranged with fixed block, the connecting block rear end is provided with sponge block, the protection frame inside one side is slidably arranged with rack, the rack upper end is slidably arranged with the limit cover, the protection frame inside rotation is provided with gear, the gear front and back both ends all are fixedly arranged with handle, the protection frame inside front end rotation is provided with protection cover, in the utility model, sponge block will contact with panel surface in the process of sliding up, wipe the fingerprint trace left on the top, not only can effectively remove the fingerprint that the button is stained, can also prevent password information from being collected by others, thereby improved the door lock security.

Description

Technical Field

[0001] This utility model relates to the field of entrance door lock technology, and in particular to a burglarproof building entrance door lock. Background Technology

[0002] Door locks are security devices installed on doors, controlling their opening and closing mechanically or electronically. Their core function is to prevent unauthorized entry. As a key interface connecting a building to the outside world, the entrance door is not only the main passage for people to enter and exit, but also the first line of defense for building security. Modern entrance doors usually integrate multiple functions such as anti-theft, fire prevention, and sound insulation, and their materials and structural design directly affect the overall protective performance.

[0003] Existing patent (publication number: CN222253519U) discloses "This utility model discloses an anti-theft door lock, including: a lock cylinder, a back plate connected to the back of the lock cylinder, and a panel connected to the front of the lock cylinder; a protective mechanism is provided on the top of the panel, the protective mechanism including: the back of a protective cover fixed to the top of the front of the panel; two ends of a cleaning roller are respectively engaged with the inner cavities of the two ends of a hook, and the end of the cleaning roller is rotatably connected to the inner cavity of the hook on the same vertical plane; one end of the hook is provided with a driving mechanism, which is used to drive one of the limiting components to slide vertically. This utility model, through the coordinated arrangement of the panel, the protective mechanism, and the driving mechanism, utilizes the driving mechanism to enable the limiting components on the protective mechanism to drive the hook to move stably, and enables the cleaning roller to clean and protect the fingerprints and buttons on the panel, facilitating the elimination of contact marks on the panel and improving the security of the door lock."

[0004] In the process of developing this application, the inventors discovered the following problems with the existing technology: Most existing door locks use exposed cleaning rollers to wipe the panel for fingerprints. The cleaning rollers are exposed to the external environment for a long time and lack a moisture retention mechanism. After long-term use, they are prone to drying and hardening, which leads to a decrease in wiping effect. This not only results in poor fingerprint removal but may even affect the security of theft prevention.

[0005] Therefore, those skilled in the art have provided a burglarproof building entrance door lock to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a burglarproof building entrance door lock. This lock uses a cleaning mechanism to clean the panel, effectively preventing the collection of residual fingerprints and password keys, thus improving security.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An anti-theft building entrance door lock includes a back plate, a protective frame fixedly installed at the front end of the back plate, a cleaning mechanism installed at the front end inside the protective frame, the cleaning mechanism including a connecting block, fixing blocks fixedly installed on both sides of the connecting block, a sponge block installed at the rear end of the connecting block, a rack slidably installed on one side inside the protective frame, a limit cover slidably installed on the upper end of the rack, a gear rotatably installed inside the protective frame, and handles fixedly installed at both ends of the gear;

[0009] The protective frame has a protective cover that is rotatably installed at the front end, a return spring that is fixedly installed at the rear end of the protective cover, and a sealing strip that is fixedly installed at the lower end of the protective cover.

[0010] Furthermore, the gear meshes with the rack, and the two handles are rotatably mounted at opposite ends of the back plate.

[0011] Furthermore, one of the two fixing blocks is externally disposed on the upper end of the rack inside, one of the two fixing blocks is upperly disposed on the lower end of the limiting cover, and the other of the two fixing blocks is externally slidably disposed on the side of the protective frame away from the rack.

[0012] Furthermore, the front end of the reset spring is fixedly disposed inside the rear end of the protective frame, and the lower end of the sealing strip is disposed inside the protective frame.

[0013] Furthermore, the upper end of the rack is located on one side of the lower end of the protective cover, and the connecting block and the outer surface of the sponge block are both slidably disposed inside the protective frame.

[0014] Furthermore, a panel is fixedly provided at the front end of the back panel, and the rear end of the sponge block is attached to the front end of the back panel.

[0015] Furthermore, a lock cylinder is provided inside the back plate, and the rear end of the gear is located at the front end of the lock cylinder.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model proposes a burglarproof building entrance door lock. During the unlocking process, after entering the password, turning the handle causes the gear to rotate. Since the gear is meshed with the rack, the rotation of the gear will drive the rack to slide upward on the inner wall of the protective frame and push the protective cover to open. The upward sliding of the rack will drive the connecting block and the sponge block containing moisture to slide upward. During the upward sliding process, the sponge block will come into contact with the panel surface and wipe away the fingerprints left on it. This not only effectively removes fingerprints on the buttons, but also prevents the password information from being collected by others, thereby improving the security of the door lock.

[0018] 2. The present invention proposes a burglarproof building entrance door lock. When the user releases the handle, the handle returns to its original position, driving the gear to rotate and causing the rack to slide downwards. The sponge block also slides down synchronously. When the sliding connecting block returns to its initial position, the rack no longer applies a pushing force to the protective cover. At this time, the return spring pushes the protective cover to gradually return to the closed state, so that the sealing strip at the lower end of the protective cover fits tightly against the inside of the protective frame, forming a sealing effect. This prevents moisture from evaporating due to long-term exposure and ensures that the sponge block always remains moist so that it can be effectively cleaned the next time it is unlocked. Attached Figure Description

[0019] Figure 1 This is an isometric schematic diagram of the entire utility model;

[0020] Figure 2 This is a partial side sectional axonometric view of the present invention near the rack;

[0021] Figure 3 This is a partial rear-view axonometric schematic diagram of the present invention;

[0022] Figure 4 This is a partial rear-view axonometric schematic diagram of the protective cover of this utility model in the open state;

[0023] Figure 5 This is a partial isometric view of the present invention near the gear.

[0024] Legend:

[0025] 1. Back plate; 2. Return spring; 3. Lock cylinder; 4. Protective frame; 5. Panel; 6. Protective cover; 7. Handle; 8. Cleaning mechanism; 9. Sealing strip; 801. Connecting block; 802. Gear; 803. Rack; 804. Fixing block; 805. Sponge block; 806. Limiting cover. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1-5 One embodiment provided by this utility model:

[0028] An anti-theft building entrance door lock includes a back plate 1, a protective frame 4 fixedly installed at the front end of the back plate 1, a cleaning mechanism 8 installed at the front end inside the protective frame 4, the cleaning mechanism 8 includes a connecting block 801, fixing blocks 804 fixedly installed on both sides of the connecting block 801, a sponge block 805 installed at the rear end of the connecting block 801, a rack 803 slidably installed on one side inside the protective frame 4, a limit cover 806 slidably installed on the upper end of the rack 803, a gear 802 rotatably installed inside the protective frame 4, and handles 7 fixedly installed at both ends of the gear 802;

[0029] The protective frame 4 has a protective cover 6 that is rotatably installed at the front end inside. The protective cover 6 has a return spring 2 that is fixedly installed at the rear end inside. The protective cover 6 has a sealing strip 9 that is fixedly installed at the lower end.

[0030] Gear 802 meshes with rack 803. Two handles 7 are rotatably mounted at opposite ends of the back plate 1. One of the two fixing blocks 804 is externally mounted inside the upper end of rack 803, and the upper end of one of the two fixing blocks 804 is mounted below the limit cover 806. The other of the two fixing blocks 804 is externally slidably mounted inside the protective frame 4 on the side away from rack 803. The front end of the return spring 2 is fixedly mounted inside the rear end of the protective frame 4. The lower end of the sealing strip 9 is mounted inside the protective frame 4. The upper end of rack 803 is mounted on the lower side of the protective cover 6. The connecting block 801 and the sponge block 805 are both externally slidably mounted inside the protective frame 4. A panel 5 is fixedly mounted at the front end of the back plate 1. The rear end of the sponge block 805 is attached to the front end of the back plate 1. A lock cylinder 3 is mounted inside the back plate 1. The rear end of gear 802 is mounted at the front end of lock cylinder 3.

[0031] Specifically, when unlocking the door lock of the building entrance door, the operator first enters the correct password on panel 5 to trigger the electronic control system to complete the initial unlocking authentication. This is a mature and publicly available technology. Therefore, its specific structure and working principle will not be described in detail in this article. Then, the operator turns the handle 7, which drives the gear 802 connected to it on the same axis to rotate inside the protective frame 4. Since the gear 802 is meshed with the rack 803, the rotation of the gear 802 will be converted into the rack 803 sliding straight up along the inner wall of the protective frame 4.

[0032] During the upward sliding of the rack 803, its upper end will push the protective cover 6 to rotate around the pivot within the protective frame 4 and compress the reset spring 2 connected to it, thus opening the protective cover 6. At the same time, it will drive the fixing block 804 to move upward, thereby driving the connecting block 801 and the sponge block 805 to slide smoothly along the guide groove. During the upward sliding stroke of the sponge block 805, the rear end of the soaked sponge block 805 will wipe the button area of ​​the panel 5, thereby effectively removing fingerprint residue on the button area of ​​the panel 5. Meanwhile, the fixing block 804 on the other side of the connecting block 801 will slide along the limiting track on the inner wall of the protective frame 4 to ensure the stable operation of the cleaning mechanism 8. Excess water droplets will drip down the panel 5 into the moisturizing cavity inside the protective frame 4. The protective frame 4 has a moisturizing cavity for storing water, so that the cleaned panel 5 remains clean and spotless, protecting password privacy and maintaining the clean appearance of the door lock, thereby effectively preventing the risk of password being spied on or cracked by fingerprint imprinting, and improving the anti-theft effect.

[0033] When the user releases the handle 7, the internal structure of the back panel 1 will cause the handle 7 to return to its original position. This is a mature and publicly available technology. Therefore, its specific structure and working principle will not be described in detail here. The return of the handle 7 will drive the gear 802 to rotate in the opposite direction, causing the rack 803 to slide down along the direction of gravity. After the sponge block 805 returns to its initial position along with the connecting block 801, the protective cover 6 will automatically close under the constant elastic force of the return spring 2. The silicone sealing strip 9 at its lower end forms a seal with the protective frame 4. The sealing strip 9 is made of silicone and has an inverted trapezoidal cross section. Its lower end extends into the sealing groove at the bottom of the protective frame 4. The sealing strip 9 locks in the moisture in the moisturizing cavity inside the protective frame 4, keeping the sponge block 805 continuously moist, thus extending the moisturizing cycle of the sponge block 805 and reducing the frequency of manual water addition.

[0034] If the door lock is opened and closed many times a day, the sponge 805 will wipe the panel 5 more frequently, resulting in faster water consumption. Therefore, the water replenishment cycle needs to be shortened. If it is a low-frequency use scenario, the water replenishment cycle can be appropriately extended. In dry environments such as winter, the water evaporates quickly and needs to be checked and replenished every 1-2 weeks. In humid environments such as the plum rain season, the water evaporates slowly and can be replenished once every 2-4 weeks. The protective cover 6 is made of transparent material, which makes it easy for users to observe the water level inside the moisturizing chamber. Both the back plate 1 and the panel 5 have waterproof performance. This is a mature and publicly available technology. Therefore, its specific structure and working principle will not be described in detail in this article.

[0035] The cleaning mechanism 8 operates without additional electricity. Through the transmission of gears 802 and rack 803, the daily unlocking action is converted into cleaning power. Compared to electric cleaning devices, this reduces energy consumption, lowers the failure rate of electronic components, and improves overall stability. When it's time to replenish moisture to the sponge block 805, turning the handle 7 causes the gears 802 and rack 803 to rotate the protective cover 6 around its axis, automatically opening it. This fully exposes the internal moisturizing chamber of the protective frame 4, allowing water to be directly injected through the opening to replenish the sponge block 805. The operation is easy and convenient, requiring no additional tools. For regular replacement and deep maintenance of 05, turn the handle 7 to drive the rack 803 to slide upward, which will drive the connecting block 801, the fixing block 804 and the sponge block 805 to rise synchronously to the middle maintenance position of the protective frame 4. Then, the operator only needs to slide the limit cover 806 at the upper end of the rack 803 horizontally to release the locking constraint on the fixing block 804. At this time, the fixing block 804 is disengaged from the limit track, and the operator can directly pull out the cleaning assembly composed of the connecting block 801, the fixing block 804 and the sponge block 805 from the side opening of the protective frame 4 to complete the disassembly. The operation is convenient. The contents not described in detail in this manual are the prior art known to those skilled in the art.

[0036] Working principle: During unlocking, the operator first enters the password via panel 5 to unlock the lock. Then, turning handle 7 unlocks the lock cylinder 3. As handle 7 rotates, it drives the connected gear 802 to rotate inside the protective frame 4. The rotation of gear 802 pushes rack 803 upwards on the inner wall of the protective frame 4. This upward movement of rack 803 pushes the protective cover 6, causing it to rotate inside the protective frame 4. The rotation of the protective cover 6 compresses the connected return spring 2, causing it to retract. The upward sliding of block 3 will also cause the upper fixing block 804 inside it to slide upward. The upward sliding of fixing block 804 will cause the connecting block 801 fixedly connected to it to slide upward. The connecting block 801 will cause the sponge block 805 containing water to slide upward inside the protective frame 4. Another fixing block 804 will slide upward simultaneously inside the protective frame 4. During the upward sliding process, the sponge block 805 will wipe the panel 5 with fingerprints, thereby erasing the fingerprint traces on the buttons on the panel 5, preventing the password from being collected by others, and improving the security of the door lock.

[0037] When the user releases the handle 7, the handle 7 will reset. At this time, the gear 802 will rotate, the rack 803 will slide down, and the sponge block 805 will slide down synchronously. When the connecting block 801 is in the initial position, the rack 803 will release the push on the protective cover 6, so that it will gradually close under the elastic force of the return spring 2. At this time, the sealing strip 9 at the lower end of the protective cover 6 will fit against the inside of the protective frame 4 to achieve a seal.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A burglarproof building entrance door lock, comprising a back plate (1), characterized in that: A protective frame (4) is fixedly installed at the front end of the back plate (1). A cleaning mechanism (8) is installed at the front end of the inner side of the protective frame (4). The cleaning mechanism (8) includes a connecting block (801). Fixing blocks (804) are fixedly installed on both sides of the connecting block (801). A sponge block (805) is installed at the rear end of the connecting block (801). A rack (803) is slidably installed on one side inside the protective frame (4). A limit cover (806) is slidably installed at the upper end of the rack (803). A gear (802) is rotatably installed inside the protective frame (4). A handle (7) is fixedly installed at both the front and rear ends of the gear (802). The protective frame (4) has a protective cover (6) rotatably installed at the front end inside, and a return spring (2) is fixedly installed at the rear end inside the protective cover (6). A sealing strip (9) is fixedly installed at the lower end of the protective cover (6).

2. The anti-theft building entrance door lock according to claim 1, characterized in that: The gear (802) meshes with the rack (803), and the two handles (7) are respectively rotatably disposed at the front and rear ends of the back plate (1).

3. The anti-theft building entrance door lock according to claim 1, characterized in that: One of the two fixing blocks (804) is externally disposed on the upper end of the rack (803), one of the two fixing blocks (804) is externally disposed on the lower end of the limiting cover (806), and the other of the two fixing blocks (804) is externally slidably disposed on the side of the protective frame (4) away from the rack (803).

4. The anti-theft building entrance door lock according to claim 1, characterized in that: The front end of the reset spring (2) is fixedly set inside the rear end of the protective frame (4), and the lower end of the sealing strip (9) is set inside the protective frame (4).

5. A burglarproof building entrance door lock according to claim 1, characterized in that: The upper end of the rack (803) is located on one side of the lower end of the protective cover (6), and the connecting block (801) and the sponge block (805) are both slidably located inside the protective frame (4).

6. A burglarproof building entrance door lock according to claim 1, characterized in that: A panel (5) is fixedly provided at the front end of the back plate (1), and the rear end of the sponge block (805) is attached to the front end of the back plate (1).

7. A burglarproof building entrance door lock according to claim 1, characterized in that: The back plate (1) is provided with a lock cylinder (3), and the rear end of the gear (802) is located at the front end of the lock cylinder (3).

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