Door lock with anti-theft structure
By incorporating an anti-theft mechanism into the door lock, and utilizing a limit bracket and anti-theft components to drive the anti-theft bracket to rotate, the problem of existing door locks being easily pried open is solved, thus improving security.
Patent Information
- Application Number
- CN202423071366.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing door locks are easily picked by criminals using cards, which reduces security.
An anti-theft mechanism is installed in the door lock, including a limit bracket, an anti-theft frame, and an anti-theft component. The anti-theft component drives the anti-theft frame to rotate to prevent the lock tongue from rotating. The rotation drive and reset of the anti-theft frame are realized by using elastic elements and a transmission frame.
It effectively reduces the chances of criminals picking locks with cards and improves the anti-theft effect of door locks.
Smart Images
Figure CN223593936U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of door locks, in particular to a door lock with an anti-theft structure. BACKGROUND
[0002] With the continuous development of social economy and the increasing improvement of people's living standards, people's safety awareness is also improving, and the door lock, as a device installed on the door and used to lock the door and the door frame, has the effect of preventing unscrupulous people from entering the door and plays an important role.
[0003] There is a door lock in the prior art, which comprises a mounting frame for mounting on the door body, and a lock tongue provided on the mounting frame, one end of the lock tongue being rotatably connected to the mounting frame and the other end being located outside the mounting frame and in a lock slot of the door frame. An unlocking handle and an unlocking mechanism are also provided on the mounting frame, the unlocking handle being rotatably connected to the mounting frame, and the unlocking handle driving the lock tongue to rotate through the unlocking mechanism, so that the lock tongue is turned out of the lock slot. In use, the user rotates the unlocking handle, the unlocking handle drives the lock tongue to rotate through the unlocking mechanism, so that the lock tongue is turned out of the lock slot, and the door body and the door frame are unlocked.
[0004] In view of the related technology in the above, when unscrupulous people want to enter the door, they often put a card into the gap between the door body and the door frame, and after the card abuts against the outer wall of the lock tongue, the card is moved to push the end of the card to rotate the lock tongue, so that the lock tongue is turned out of the lock slot on the door frame to pry the lock between the door body and the door frame. However, the prior art cannot cope with the above prying method, which increases the probability of unscrupulous people opening the door by prying the lock, and thus reduces the security of the door lock. CONTENT OF THE UTILITY MODEL
[0005] In order to reduce the probability of unscrupulous people prying the lock by using a card to drive the lock tongue to rotate outside the door, the present application provides a door lock with an anti-theft structure.
[0006] The present application provides a door lock with an anti-theft structure, which adopts the following technical scheme:
[0007] A door lock with an anti-theft structure, comprising a mounting frame, a lock tongue and an unlocking mechanism, one end of the lock tongue being rotatably connected to the mounting frame and the other end extending out of the mounting frame, an anti-theft mechanism being further provided on the mounting frame, the anti-theft mechanism comprising a limiting frame, an anti-theft frame and an anti-theft component, the limiting frame being provided on the mounting frame, one end of the anti-theft frame being rotatably connected to the lock tongue and the other end extending towards the limiting frame, the anti-theft component being used to drive the anti-theft frame to rotate when the one end of the lock tongue extending out of the mounting frame abuts against a card or other external objects, so that the limiting frame is located on the displacement path of the anti-theft frame rotating together with the lock tongue.
[0008] By adopting the technical scheme, compared with the prior art, the card is easily inserted into the gap between the door body and the door frame from outside the door by the unscrupulous person, so that the card abuts against the lock tongue, the lock tongue is pushed to rotate, and the lock is picked between the door body and the door frame; the anti-theft mechanism is arranged, when the card is inserted into the gap between the door body and the door frame by the unscrupulous person, the anti-theft assembly can drive the anti-theft frame to rotate relative to the lock tongue, so that the end of the anti-theft frame not connected with the lock tongue rotates together with the lock tongue, and abuts against the limiting frame on the mounting frame, thereby preventing the anti-theft frame from continuing to rotate together with the lock tongue, and preventing the rotation of the lock tongue, thereby effectively reducing the probability that the lock is picked by the unscrupulous person through the card to drive the lock tongue to rotate outside the door, and increasing the anti-theft effect of the application.
[0009] Preferably, the anti-theft assembly comprises an abutting frame and an elastic member, the abutting frame is in sliding connection with the lock tongue, one end of the abutting frame extends out of one end of the lock tongue located in the mounting frame, the other end of the abutting frame extends an abutting portion, the abutting portion is located at one end of the anti-theft frame close to the limiting frame, is bent and extends towards the one end of the anti-theft frame, and abuts against the anti-theft frame to limit the anti-theft frame, and the elastic member is located between the abutting frame and the anti-theft frame and is used to abut tightly the abutting frame and the anti-theft frame by the elastic force of the elastic member.
[0010] By adopting the technical scheme, when the card is inserted into the gap between the door body and the door frame by the unscrupulous person, the end of the abutting frame extending out of the lock tongue can slide relative to the lock tongue under the abutment of the card, so that the abutting frame drives the abutting portion to slide towards the limiting frame, the anti-theft frame is released from the abutting portion, and the one end of the anti-theft frame close to the limiting frame can rotate under the elastic force of the elastic member, thereby driving the rotation of the anti-theft frame, and the anti-theft frame can be driven in time.
[0011] Preferably, a limiting column is further arranged on the lock tongue, one end of the limiting column penetrates through the abutting frame, and an active slot is further arranged on the abutting frame for the sliding of the limiting column relative to the abutting frame.
[0012] By adopting the technical scheme, the limiting column can guide the sliding of the abutting frame, and can limit the abutting frame by abutting against the inner wall of the active slot on the abutting frame, thereby reducing the probability of accidental disengagement of the abutting frame.
[0013] Preferably, the elastic member comprises a torsion spring, the torsion spring is sleeved on the limiting column, one end of the torsion spring abuts against the anti-theft frame, and the other end of the torsion spring abuts against the abutting frame.
[0014] By adopting the technical scheme, the two ends of the torsion spring can abut against the anti-theft frame and the limiting frame respectively, so that the anti-theft frame and the abutting frame can be reset, thereby saving the setting space and effectively realizing the limiting of the anti-theft frame and the abutting frame, and the abutting degree of the abutting part and the anti-theft frame can be ensured.
[0015] Preferably, the anti-theft assembly further comprises a transmission frame, one end of the transmission frame is rotationally connected with the abutting frame, and the other end is rotationally connected with the anti-theft frame.
[0016] By adopting the technical scheme, when the card and other objects abut against the abutting frame, the abutting frame can drive the transmission frame to displace when the abutting frame slips, so that the transmission frame drives the anti-theft frame to rotate, thereby realizing the direct transmission between the abutting frame and the anti-theft frame, effectively ensuring the rotation consistency of the anti-theft frame, and reducing the failure probability of the anti-theft frame rotation.
[0017] Preferably, the elastic member comprises a reset spring, the reset spring is sleeved on the abutting frame, one end of the reset spring abuts against the abutting frame, and the other end abuts against the lock tongue.
[0018] By adopting the technical scheme, the reset spring can drive the abutting frame to slip back through the elastic force of the reset spring, thereby realizing the reset of the abutting frame, and when the abutting frame is reset, the abutting frame can drive the transmission frame to reset together through the transmission frame.
[0019] Preferably, a guide column is further arranged on the lock tongue, one end of the guide column penetrates through the abutting frame, and a guide groove is arranged on the abutting frame for displacement of the guide column relative to the abutting frame.
[0020] By adopting the technical scheme, the guide column can guide the sliding of the abutting frame, and can limit the abutting frame through abutting against the inner wall of the guide groove on the abutting frame, thereby reducing the probability of accidental disengagement of the abutting frame.
[0021] Preferably, a abutting groove is further arranged on the side of the anti-theft frame close to the limiting frame, and the limiting frame limits the anti-theft frame from rotating together with the lock tongue by abutting against the inner wall of the abutting groove.
[0022] By adopting the technical scheme, the limiting frame can limit the anti-theft frame from rotating together with the lock tongue by abutting against the inner wall of the abutting groove, and the existence of the abutting groove can effectively increase the fit degree when the limiting frame abuts against the anti-theft frame, thereby ensuring the abutting effect.
[0023] In summary, the present application has at least one of the following beneficial technical effects:
[0024] 1. The setting of the anti-theft mechanism makes the anti-theft assembly drive the anti-theft frame to rotate relative to the lock tongue when the card is inserted into the gap between the door body and the door frame, so that the end of the anti-theft frame not connected with the lock tongue rotates with the lock tongue, and the anti-theft frame can abut against the limiting frame on the mounting frame, thereby preventing the anti-theft frame from continuing to rotate with the lock tongue, and further preventing the rotation of the lock tongue, thereby effectively reducing the probability of the lock tongue being driven to rotate outside the door by the card, and increasing the anti-theft effect of the application.
[0025] 2. The specific setting of the anti-theft assembly makes the end of the abutment frame extending out of the lock tongue capable of sliding relative to the lock tongue under the abutment of the card, so that the abutment frame drives the abutment part to slide to the end close to the limiting frame, and the anti-theft frame is released from the abutment state of the abutment part, and further makes the end of the anti-theft frame close to the limiting frame capable of rotating under the elastic force of the elastic member to the direction close to the limiting frame, thereby realizing the driving of the rotation of the anti-theft frame and timely driving the anti-theft frame.
[0026] 3. The setting of the transmission frame makes the abutment frame capable of driving the transmission frame to displace when the card and other objects abut against the abutment frame and make the abutment frame slide, so that the transmission frame drives the anti-theft frame to rotate, thereby realizing the direct transmission between the abutment frame and the anti-theft frame, effectively ensuring the rotation consistency of the anti-theft frame and reducing the probability of failure of the rotation of the anti-theft frame. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 is a schematic view of the door lock with the anti-theft structure in embodiment 1 of the application.
[0028] Figure 2 is a structural schematic view of the anti-theft assembly in embodiment 1 of the application.
[0029] Figure 3 is a structural schematic view of the anti-theft assembly in embodiment 2 of the application.
[0030] Explanation of reference signs: 1, mounting frame; 2, lock tongue; 21, guide column; 22, limiting column; 3, unlocking mechanism; 4, anti-theft mechanism; 41, limiting frame; 42, anti-theft frame; 421, added part; 43, anti-theft assembly; 431, abutment frame; 4311, abutment part; 4312, sliding part; 432, elastic member; 4321, torsional spring; 4322, return spring; 433, transmission frame; 5, unlocking frame; 6, abutment groove; 7, guide groove; 8, movable groove. DETAILED DESCRIPTION
[0031] The application will be further described below with reference to the accompanying drawings. Figures 1-3 The application will be further described below with reference to the accompanying drawings.
[0032] Embodiment 1
[0033] Embodiment 1 of the application discloses a door lock with an anti-theft structure. Referring to Figure 1 and Figure 2 , the door lock with the anti-theft structure comprises a mounting frame 1, a lock tongue 2 and an unlocking mechanism 3, one end of the lock tongue 2 is rotationally connected with the mounting frame 1, the other end extends out of the mounting frame 1, and the mounting frame 1 is further provided with an anti-theft mechanism 4, the anti-theft mechanism 4 comprises a limiting frame 41, an anti-theft frame 42 and an anti-theft assembly 43, the limiting frame 41 is arranged on the mounting frame 1, one end of the anti-theft frame 42 is rotationally connected with the lock tongue 2, the other end extends towards the limiting frame 41, and the anti-theft assembly 43 is used for driving the anti-theft frame 42 to rotate when the end of the lock tongue 2 extending out of the mounting frame 1 abuts against a card or other external objects, so that the limiting frame 41 is located on the displacement path of the anti-theft frame 42 when the anti-theft frame 42 rotates together with the lock tongue 2.
[0034] Referring to Figure 1 and Figure 2 , the mounting frame 1 is further provided with an unlocking frame 5, the unlocking frame 5 is rotationally connected with the mounting frame 1 and located on the side of the mounting frame 1 away from the lock tongue 2. The unlocking frame 5 drives the lock tongue 2 to rotate through the unlocking mechanism 3, so that the lock tongue 2 is completely retracted into the mounting frame 1.
[0035] Referring to Figure 1 and Figure 2 , the top of the limiting frame 41 is fixedly and integrally arranged on the mounting frame 1. The lock tongue 2 is provided with a cavity for placing the limiting part in the cavity, so as to reduce the probability of interference between the lock tongue 2 and the limiting frame 41. The bottom of the side of the anti-theft frame 42 close to the limiting frame 41 is further provided with an abutting groove 6, and the limiting frame 41 is located on the displacement path of the inner wall of the abutting groove 6 after the anti-theft frame 42 is driven to rotate by the anti-theft assembly 43.
[0036] Referring to Figure 1 and Figure 2 , the anti-theft assembly 43 comprises an abutting frame 431 and an elastic member 432, one end of the abutting frame 431 is located in the lock tongue 2 and is slidingly connected with the lock tongue 2, the other end of the abutting frame 431 extends out of the lock tongue 2 away from the rotationally connected end, so that the end can abut against the card or other external objects. The abutting frame 431 further extends an abutting part 4311 on the end located in the lock tongue 2, the abutting part 4311 is integrally arranged on the abutting frame 431, the abutting part 4311 is located on the side of the anti-theft frame 42 close to the limiting frame 41 and is bent and extended towards the end of the anti-theft frame 42.
[0037] Referring to Figure 1 and Figure 2The anti-theft frame 42 further extends an added part 421 on the side close to the abutting part 4311, and the added part 421 is integrally formed with the anti-theft frame 42. The added part 421 is close to the side wall of the limiting frame 41, and abuts against the side wall of the abutting part 4311 away from the limiting frame 41, so that the abutting frame 431 abuts against the anti-theft frame 42, and the anti-theft frame 42 is limited by the abutting frame 431, and is away from the limiting frame 41.
[0038] With reference to Figure 1 and Figure 2 The lock tongue 2 is further provided with a guide column 21 and a limiting column 22. The guide column 21 is located on the side of the abutting frame 431 away from the limiting frame 41, and the limiting column 22 is located on the side of the abutting frame 431 close to the limiting frame 41. The two ends of the guide column 21 and the limiting column 22 are fixedly connected with the lock tongue 2, and the axial directions are perpendicular to the sliding direction of the abutting frame 431. The guide column 21 and the limiting column 22 are fixedly connected with the lock tongue 2. In the embodiment, the limiting column 22 serves as the rotating shaft of the anti-theft frame 42.
[0039] With reference to Figure 1 and Figure 2 The side wall of the abutting frame 431 along the axial direction of the guide column 21 is provided with a guide groove 7 and a movable groove 8. The guide column 21 passes through the guide groove 7, and the limiting column 22 passes through the movable groove 8, so that the guide column 21 and the limiting column 22 can slide relative to the abutting frame 431.
[0040] With reference to Figure 1 and Figure 2 The elastic member 432 includes a torsion spring 4321, the torsion spring 4321 is sleeved on the limiting column 22, one end of the torsion spring 4321 abuts against the abutting frame 431, and the other end abuts against the anti-theft frame 42, so that when the abutting frame 431 gradually slides into the lock tongue 2, the torsion spring 4321 is compressed, and when the anti-theft frame 42 gradually rotates away from the limiting frame 41, the torsion spring 4321 is compressed. When the abutting frame 431 is located at the end of the sliding path farthest away from the limiting frame 41, the torsion spring 4321 is still in the compressed state.
[0041] The implementation principle of the door lock with the anti-theft structure in the embodiment 1 of the application is as follows: when the card is inserted into the gap between the door body and the door frame by the unscrupulous person, the card abuts against the abutting frame 431, so as to push the abutting frame 431 to gradually slide into the lock tongue 2. In this process, the abutting portion 4311 on the abutting frame 431 gradually moves away from the added portion 421 on the anti-theft frame 42, so that the abutting portion 4311 gradually releases the limiting of the anti-theft frame 42, and the anti-theft frame 42 can rotate under the elastic force of the torsion spring 4321, and then the inner wall of the abutting groove 6 on the anti-theft frame 42 is close to the limiting frame 41. After that, the lock tongue 2 rotates, so that the lock tongue 2 drives the anti-theft frame 42 to rotate together, and the inner wall of the abutting groove 6 on the anti-theft frame 42 abuts against the limiting frame 41, so as to hinder the continuous rotation of the lock tongue 2, and the anti-theft function is realized.
[0042] Embodiment 2
[0043] The difference between the embodiment 2 of the application and the embodiment 1 is that, referring to Figure 3 , the anti-theft assembly 43 further comprises a transmission frame 433, and the transmission frame 433 is located between the abutting frame 431 and the anti-theft frame 42. One end of the transmission frame 433 is rotationally connected with the abutting frame 431 through a pin shaft, and the other end is rotationally connected with the side of the anti-theft frame 42 away from the limiting frame 41.
[0044] Referring to Figure 3 , the abutting frame 431 extends the sliding portion 4312 to the side close to the anti-theft frame 42, and the sliding portion 4312 is integrally formed with the abutting frame 431. One end of the sliding portion 4312 extends into the lock tongue 2 and is slidably connected with the inside of the lock tongue 2. The elastic member 432 comprises a return spring 4322, the return spring 4322 is sleeved on the abutting frame 431, one end of the return spring 4322 abuts against the abutting frame 431, and the other end abuts against the lock tongue 2.
[0045] The implementation principle of the door lock with the anti-theft structure in the embodiment 2 of the application is as follows: when the card is inserted into the gap between the door body and the door frame by the unscrupulous person, so that the card abuts against the abutting frame 431 and pushes the abutting frame 431 to slide, the abutting frame 431 drives the anti-theft frame 42 to rotate through the transmission frame 433, so that the abutting groove 6 on the anti-theft frame 42 gradually moves close to the limiting frame 41. After that, the lock tongue 2 rotates, so that the lock tongue 2 drives the anti-theft frame 42 to rotate together, and the inner wall of the abutting groove 6 on the anti-theft frame 42 abuts against the limiting frame 41, so as to hinder the continuous rotation of the lock tongue 2, and the anti-theft function is realized.
[0046] The above are all preferred embodiments of the application, and are not intended to limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application shall be covered within the protection scope of the application.
Claims
1. A door lock with an anti-theft structure, comprising a mounting bracket (1), a bolt (2), and an unlocking mechanism (3), wherein one end of the bolt (2) is rotatably connected to the mounting bracket (1), and the other end extends out of the mounting bracket (1), characterized in that: The mounting bracket (1) is also provided with an anti-theft mechanism (4). The anti-theft mechanism (4) includes a limiting bracket (41), an anti-theft frame (42), and an anti-theft component (43). The limiting bracket (41) is mounted on the mounting bracket (1). One end of the anti-theft frame (42) is rotatably connected to the lock tongue (2), and the other end extends toward the limiting bracket (41). The anti-theft component (43) is used to drive the anti-theft frame (42) to rotate when the end of the lock tongue (2) extending out of the mounting bracket (1) comes into contact with a card or other foreign object. This causes the limiting bracket (41) to be located on the displacement path of the anti-theft frame (42) as it rotates with the lock tongue (2).
2. A door lock with an anti-theft structure according to claim 1, characterized in that: The anti-theft component (43) includes an abutment frame (431) and an elastic element (432). The abutment frame (431) is slidably connected to the latch (2). One end of the abutment frame (431) extends out of the latch (2) located outside one end of the mounting frame (1). The other end of the abutment frame (431) extends to abutment portion (4311). The abutment portion (4311) is located at one end of the anti-theft frame (42) near the limiting frame (41), bends and extends towards the end near the anti-theft frame (42), and limits the anti-theft frame (42) by abutting against it. The elastic element (432) is located between the abutment frame (431) and the anti-theft frame (42), and is used to press the abutment frame (431) against the anti-theft frame (42) by its own elasticity.
3. A door lock with an anti-theft structure according to claim 2, characterized in that: The locking tongue (2) is also provided with a limiting post (22), one end of which passes through the abutment frame (431), and the abutment frame (431) is also provided with a movable groove (8) for the limiting post (22) to slide relative to itself.
4. A door lock with an anti-theft structure according to claim 3, characterized in that: The elastic element (432) includes a torsion spring (4321), which is sleeved on the limiting post (22), and one end of the torsion spring (4321) abuts against the anti-theft frame (42), and the other end abuts against the abutment frame (431).
5. A door lock with an anti-theft structure according to claim 2, characterized in that: The anti-theft component (43) also includes a transmission frame (433), one end of which is rotatably connected to the abutment frame (431), and the other end is rotatably connected to the anti-theft frame (42).
6. A door lock with an anti-theft structure according to claim 2, characterized in that: The elastic element (432) includes a return spring (4322), which is sleeved on the abutment frame (431), with one end abutting against the abutment frame (431) and the other end abutting against the locking tongue (2).
7. A door lock with an anti-theft structure according to claim 2, characterized in that: The locking tongue (2) is also provided with a guide post (21), one end of which passes through the abutment frame (431), and the abutment frame (431) is provided with a guide groove (7) for the guide post (21) to move relative to itself.
8. A door lock with an anti-theft structure according to claim 1, characterized in that: The anti-theft bracket (42) has an abutment groove (6) on the side near the limiting bracket (41). The limiting bracket (41) abuts against the inner wall of the abutment groove (6) to restrict the anti-theft bracket (42) from rotating together with the locking tongue (2).