Stainless steel door anti-theft structure

Abstract

The utility model relates to building safety protection facilities technical field, especially a kind of anti-theft structure for stainless steel door;Including stainless steel door, lock body installation cavity;Lock body installation cavity is equipped with locking mechanism;The locking mechanism is composed of driving gear, rack door latch, ratchet wheel, baffle with dog, slider, electronic authentication drive unit, motor and mechanical lock core, the locking mechanism, slider is rotated to push away baffle by electronic authentication drive motor to open door, or by internal mechanical operation slider axial movement embeds baffle notch to realize self-locking type unlocking, after that, mechanical key or internal handle drive gear can be used to open door;The utility model realizes the dual authentication of electronic authentication and mechanical key, greatly improves security, while internal and external operation path is independent, internal mechanical unlocking guarantees the rapid evacuation under emergency, overall structure is simple, and reliability is high, and practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of building safety protection facilities technology, and in particular to an anti-theft structure for stainless steel doors. Background Technology

[0002] Stainless steel doors are widely used in various types of buildings due to their high strength, corrosion resistance, and beautiful appearance.

[0003] The existing patent number CN202221468294.7 proposes "an anti-theft structure for stainless steel doors" which uses purely mechanical auxiliary anti-theft: the door is prevented from being pried open by a chain, a buckle and a tensioning and anti-disengagement mechanism in the slot block. This addresses the shortcomings of stainless steel door lock structures, such as a single anti-theft mode and inconvenience in emergency opening. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-theft structure for stainless steel doors in order to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution: This utility model proposes an anti-theft structure for stainless steel doors, including a stainless steel door and a door frame; the stainless steel door has a lock body mounting cavity inside; and a locking mechanism is provided in the lock body mounting cavity. The locking mechanism includes a drive gear, a rack and pinion latch, a ratchet, two baffles, a slider, an electronic authentication drive unit, a motor, and a mechanical lock cylinder; the drive gear meshes with the rack and pinion latch; the ratchet is coaxially and fixedly connected to the drive gear; the two baffles are symmetrically arranged on both sides of the ratchet, and the front end of the baffle is provided with a locking tooth for engaging with the ratchet tooth; the baffle is provided with a return spring to push the baffle towards the middle; a transverse groove is provided in the lock body mounting cavity; The electronic authentication drive unit is located inside the door leaf and is used to output an electrical signal after successful authentication. The motor is electrically connected to the electronic authentication drive unit, and the output shaft of the motor is connected to the slider, so that the output shaft of the motor rotates, thereby driving the slider to rotate. The output shaft of the motor is connected to the slider through a spline structure, so that the slider can both rotate with the output shaft and move axially relative to the output shaft. The mechanical lock cylinder has a drive gear connected to its rotating end; The slider is axially movable between the two baffles.

[0006] As a preferred embodiment of this utility model, the door leaf is further provided with an unlocking knob on its inner side; the unlocking knob, the drive gear, and the ratchet are mounted on a drive shaft.

[0007] As a preferred technical solution of this utility model, the anti-theft structure for stainless steel doors has two unlocking methods: External electronic drive method: After the electronic authentication drive unit passes the authentication, the motor drives the slider to rotate. During the rotation, its pushing part acts on the inner side of the baffle, opening the two baffles and disengaging the locking teeth from the ratchet. After that, operating the mechanical lock cylinder can drive the drive gear to rotate freely, causing the rack and pinion latch to retract. Internal mechanical drive method: The door leaf is provided with an unlocking handle on the inside. The unlocking handle is connected to the slider through a linkage mechanism. Pulling up the unlocking handle can force the slider to move axially, so that the drive protrusion is embedded in the horizontal groove and the two baffles are opened, so that the locking teeth are disengaged from the ratchet. After that, the door can be opened by operating an inner unlocking knob connected to the drive gear.

[0008] As a preferred technical solution of this utility model, the electronic authentication driving unit is one of a fingerprint recognition module, a password keyboard, or an RFID card reader.

[0009] As a preferred embodiment of this utility model, an independent door handle is provided on the inner side of the door leaf, and the door handle is connected to the drive shaft of the drive gear.

[0010] As a preferred technical solution of this utility model, the keyhole of the mechanical lock cylinder is provided with a protective cover that is drill-proof and pry-proof.

[0011] As a preferred technical solution of this utility model, the unlocking handle in the horizontal state can force the slider to move axially, so that the slider is locked in the horizontal groove.

[0012] The beneficial effects of this utility model are as follows: 1. Two-factor authentication offers high security. External unlocking requires both electronic authentication and a mechanical key, significantly increasing the difficulty of technical unlocking. 2. Worry-free and highly reliable: The electronic components are only responsible for preliminary alignment, with the final power source being a purely mechanical structure. Even in the event of a power outage or electronic malfunction, it can still be reliably opened using the mechanical key. 3. Convenient and efficient operation both inside and outside; the internal operation adopts a step-by-step "unlock first, then open" method, which is ergonomic; the external operation is intelligent and convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of an anti-theft structure for stainless steel doors; Figure 2 This is a schematic diagram of the locking mechanism; Figure 3 This is a schematic diagram of the external stainless steel door structure.

[0014] Reference numerals: 1. Stainless steel door; 2. Lock body mounting cavity; 3. Locking mechanism; 4. Unlocking knob; 5. Horizontal groove; 31. Drive gear; 32. Rack and pinion latch; 33. Ratchet; 34. Baffle; 35. Slider; 36. Electronic authentication drive unit; 37. Motor; 38. Mechanical lock cylinder; 39. Unlocking handle; 41. Drive shaft. Detailed Implementation

[0015] Example

[0016] The electronic authentication drive unit 36 ​​uses a fingerprint recognition module, and the mechanical lock cylinder 38 is a Class C computer lock cylinder. After the user verifies their fingerprint on the outside, the motor 37 drives a nylon slider 35 to rotate 90 degrees. During the rotation, the slider uses a sloping structure to open two high-strength alloy steel baffles 34. The user can then use a mechanical key to rotate the lock cylinder 270 degrees to open the door. On the inside of the door, the user first moves a surface-mounted unlocking button downwards. This button is connected to the slider 35 via a steel wire. After the button is moved, the slider 35 slides horizontally into the groove of the baffle 34 and locks. The user can then rotate an independent spherical door handle clockwise to open the door. The entire locking mechanism 3 is integrated into a metal housing, with a compact structure and reliable operation.

[0017] like Figures 1 to 3 As shown, this utility model proposes: an anti-theft structure for a stainless steel door 1, including a stainless steel door 1 and a door frame; the stainless steel door 1 has a lock body mounting cavity 2 inside; the lock body mounting cavity 2 has a locking mechanism 3 inside; The locking mechanism 3 includes a drive gear 31, a rack and pinion latch 32, a ratchet 33, two baffles 34, a slider 35, an electronic authentication drive unit 36, a motor 37, and a mechanical lock cylinder 38; the drive gear 31 meshes with the rack and pinion latch 32; the ratchet 33 is coaxially and fixedly connected to the drive gear 31; the two baffles 34 are symmetrically arranged on both sides of the ratchet 33, and the front end of the baffle 34 is provided with a locking tooth for engaging with the teeth of the ratchet 33; the baffle 34 is provided with a return spring to push the baffle 34 towards the middle; a transverse groove 5 is provided in the lock body mounting cavity 2; The electronic authentication drive unit 36 ​​is located inside the door leaf and is used to output an electrical signal after authentication is successful. The motor 37 is electrically connected to the electronic authentication drive unit 36. The output shaft of the motor 37 is connected to the slider 35, so that the output shaft of the motor 37 rotates, thereby driving the slider 35 to rotate. The output shaft of the motor 37 is connected to the slider 35 through a spline structure, so that the slider 35 can both rotate with the output shaft and move axially relative to the output shaft. The mechanical lock cylinder 38 has a drive gear 31 connected to its rotating end; The slider 35 is axially movable between the two baffles 34.

[0018] The door leaf is also provided with an unlocking knob 4 on the inside; the unlocking knob 4, the drive gear 31 and the ratchet 33 are mounted on a drive shaft 41.

[0019] The stainless steel door 1 uses an anti-theft structure with two unlocking methods: External electronic drive method: After the electronic authentication drive unit 36 ​​authenticates, the motor 37 drives the slider 35 to rotate. During the rotation, its pushing part acts on the inner side of the baffle 34, opening the two baffles 34 and disengaging its locking teeth from the ratchet 33. After that, operating the mechanical lock core 38 can drive the drive gear 31 to rotate freely, causing the rack and pinion latch 32 to retract. Internal mechanical drive method: The door leaf is provided with an unlocking handle 39 on the inside. The unlocking handle 39 is connected to the slider 35 through a linkage mechanism. Pulling up the unlocking handle 39 can force the slider 35 to move axially, so that the driving protrusion is embedded in the transverse groove 5 and the two baffles 34 are opened, so that the locking teeth are disengaged from the ratchet 33. After that, the door can be opened by operating an inner unlocking knob 4 connected to the driving gear 31.

[0020] The electronic authentication driving unit 36 ​​is one of a fingerprint recognition module, a keypad, or an RFID card reader.

[0021] The door leaf is also provided with an independent door handle, which is connected to the drive shaft 41 of the drive gear 31.

[0022] The mechanical lock cylinder 38 has a protective cover on the outside of the keyhole that is drill-proof and pry-proof.

[0023] In this case, the unlocking handle 39 in the horizontal position can force the slider 35 to move axially, so that the slider 35 is locked in the horizontal groove 5.

[0024] Working principle: This structure provides two independent unlocking paths, one internal and one external. For external operation, the user verifies their identity via an electronic authentication unit. Upon successful authentication, motor 37 starts, driving slider 35 to rotate circumferentially. During rotation, the push-opening part at the end of slider 35 acts like a cam, acting on the inner surfaces of the two baffles 34, forcibly opening them to the sides and disengaging their locking teeth from ratchet 33, thus releasing the brake on drive gear 31. Afterward, the user can directly drive gear 31 and retract the latch by rotating the lock cylinder with a mechanical key. For internal operation, the user manually drives the inner unlocking handle 39, pushing slider 35 axially so that its end engages in the positioning slots on the two baffles 34. This action opens the baffles 34 while simultaneously locking slider 35, keeping ratchet 33 in a continuously released state. At this time, the door's internal opening state is no different from a normal door; simply rotating the inner door handle will drive drive gear 31 to open the door.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An anti-theft structure for stainless steel doors, characterized in that: Includes a stainless steel door (1); the stainless steel door (1) has a lock body mounting cavity (2) inside; the lock body mounting cavity (2) has a locking mechanism (3); The locking mechanism (3) includes a drive gear (31), a rack and pinion latch (32), a ratchet (33), two baffles (34), a slider (35), an electronic authentication drive unit (36), a motor (37), and a mechanical lock cylinder (38); the drive gear (31) meshes with the rack and pinion latch (32); the ratchet (33) is coaxially and fixedly connected to the drive gear (31); the two baffles (34) are symmetrically arranged on both sides of the ratchet (33), the front end of the baffle is provided with a locking tooth for locking into the ratchet (33) tooth, and the baffle is provided with a return spring (341) to push the baffle towards the middle; The electronic authentication drive unit (36) is located inside the door leaf and is used to output an electrical signal after authentication is passed. The motor (37) is electrically connected to the electronic authentication drive unit (36). The output shaft of the motor (37) is connected to the slider (35), so that the output shaft of the motor (37) rotates, thereby driving the slider (35) to rotate. The output shaft of the motor (37) is connected to the slider (35) through a spline structure, so that the slider (35) can both rotate with the output shaft and move axially relative to the output shaft. The mechanical lock cylinder (38) has a drive gear (31) connected to its rotating end. The slider (35) is axially movable between the two baffles (34).

2. The anti-theft structure for stainless steel doors according to claim 1, characterized in that: The door leaf is also provided with an unlocking knob (4); the unlocking knob (4), the drive gear (31) and the ratchet (33) are located on a drive shaft (41).

3. The anti-theft structure for stainless steel doors according to claim 1, characterized in that: The electronic authentication driver unit (36) is one of a fingerprint recognition module, a password keypad, or an RFID card reader.

4. The anti-theft structure for stainless steel doors according to claim 1, characterized in that... The mechanical lock cylinder (38) has a protective cover on the outside of the keyhole that is drill-proof and pry-proof.

5. The anti-theft structure for stainless steel doors according to claim 1, characterized in that: The lock body mounting cavity (2) is provided with a transverse groove (5); the unlocking handle (39) in the transverse state can force the slider (35) to move axially, so that the slider (35) is locked in the transverse groove (5).

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