Primary-secondary anti-theft door with anti-prying structure
By introducing a stepper motor-driven double locking system into the mother and child door, the problem of insufficient anti-theft performance of traditional mother and child doors is solved, and the high-safe secondary locking function is achieved, which significantly improves the anti-theft performance.
Patent Information
- Application Number
- CN202420504082.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-15
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-15
AI Technical Summary
Traditional mother and child doors are only equipped with a single door lock, which has poor anti-theft performance and is easily pried open, and lacks safety in use.
A mother-child anti-theft door with an anti-plitting structure is designed, and a double locking system driven by stepper motor is adopted. The secondary locking function is realized through hinged door frames, door lock components, screws, translation blocks and locking steel plates. , enhance the anti-theft performance.
It effectively prevents criminals from destroying the door lock and entering the room, improves the anti-theft performance and safety of the mother and child door, is easy to use, and meets the needs of high safety.
Smart Images
Figure CN222207632U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anti-theft doors, in particular to a mother-and-child anti-theft door with an anti-pry structure. Background Art
[0002] A double-leaf door is a special double-leaf door, consisting of a narrow door leaf (sub-door) and a wider door leaf (main door). This way, when opening and closing the door, you don't have to push a too large door; or if half of the double door is too small to pass through, you can open it completely when you need to pass large objects such as furniture.
[0003] At present, most traditional double-doors are only equipped with a single door lock to lock and prevent theft, which does not have good anti-theft performance. It is easy for criminals to pry it open and enter the room, and the safety during use is poor. For this reason, we propose a double-door anti-theft door with an anti-pry structure to solve the problems raised in the above background technology. Utility Model Content
[0004] The purpose of the utility model is to provide a double-door anti-theft door with an anti-pry structure to solve the problems raised in the above background technology.
[0005] To achieve the above object, the utility model provides the following technical solution: a mother-and-child anti-theft door with an anti-pry structure, comprising a door frame, a child door body and a mother door body are hingedly connected to the inner side of the door frame by hinges, and a door lock assembly is installed on the mother door body;
[0006] The tops of the sub-door body and the main door body are respectively provided with a first locking groove and a second locking groove which are interconnected, a cavity is provided inside the door frame and above the first locking groove and the second locking groove, a transmission cavity is provided inside the door frame and on the side corresponding to the cavity, a stepping motor is fixedly installed at a position corresponding to the transmission cavity on the outer side of the door frame, the output shaft of the stepping motor passes through the transmission cavity and is fixedly connected to a driving bevel gear, a rolling bearing is fixedly installed on the right side of the inner wall of the cavity, a screw is rotatably connected in the rolling bearing, the left end of the screw passes through the rolling bearing, the cavity and the transmission cavity in turn and extends to the transmission cavity and is fixedly connected to a driven bevel gear used in conjunction with the driving bevel gear, a translation block is axially threadedly connected to the surface of the screw located inside the cavity, the top of the translation block is slidably connected to the top of the inner wall of the cavity through a guide slider, a locking steel plate matched with the first locking groove and the second locking groove is fixedly connected to the bottom of the translation block, and a through opening for the locking steel plate to pass through is provided between the first locking groove and the second locking groove and the cavity.
[0007] Furthermore, a battery is fixedly installed inside the door frame and in a cavity corresponding to the left side of the transmission cavity, and the battery is electrically connected to the stepper motor.
[0008] Furthermore, a charging hole for charging the battery is provided on the front of the door frame, a guide rod is fixedly connected to the position of the charging hole on the outside of the door frame, and a dust baffle is axially slidably connected to the guide rod.
[0009] Furthermore, a limit rotating block is fixedly connected to the position between the screw surface corresponding to the cavity and the transmission cavity, the limit rotating block is rotationally connected to the door frame, and a plurality of balls are installed around the outer side of the limit rotating block.
[0010] Furthermore, a hook is installed on the sub-door body, and a cat's eye is provided on the main door body.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0012] The utility model can lock the sub-door body and the main door body with the door lock assembly, and the stepping motor can be opened in the secondary locking state so that its output shaft drives the screw to rotate, and the translation block threadedly connected thereto can drive the locking steel plate to translate under the limiting guide of the guide slider, so that it is at the intersection of the first locking groove and the second locking groove, thereby playing a secondary locking role, thereby preventing lawbreakers from breaking the door lock assembly and entering. When the main door body needs to be opened, similarly, it is only necessary to move the locking steel plate at the bottom of the translation block into the first locking groove at the top of the sub-door body. If the sub-door body needs to be opened again, the locking steel plate is moved to the left and disengaged from the first locking groove. The mother-and-child anti-theft door with an anti-pry structure has a reasonable structural design and is easy to use. It adopts a double locking method to greatly improve the anti-theft performance of the mother-and-child door, making it difficult for lawbreakers to pry it open and enter the room. It has high safety and can fully meet the use needs. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the utility model;
[0014] Figure 2 It is a structural cross-sectional view of the utility model;
[0015] Figure 3 For this utility model Figure 1 A partial enlarged view of AA.
[0016] In the figure: 1 door frame, 2 sub-door body, 3 mother door body, 4 door lock assembly, 5 first locking groove, 6 second locking groove, 7 cavity, 8 transmission cavity, 9 stepper motor, 10 driving bevel gear, 11 rolling bearing, 12 screw, 13 driven bevel gear, 14 translation block, 15 locking steel plate, 16 through port, 17 battery, 18 charging hole, 19 guide rod, 20 dust baffle, 21 limit rotating block, 22 hook, 23 cat's eye. DETAILED DESCRIPTION
[0017] 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.
[0018] See also Figure 1-3 A mother-and-child anti-theft door with an anti-pry structure comprises a door frame 1, a sub-door body 2 and a mother-door body 3 are hingedly connected to the inner side of the door frame 1 by hinges, and a door lock assembly 4 is installed on the mother-door body 3.
[0019] The sub-door body 2 and the main door body 3 are respectively provided with a first locking groove 5 and a second locking groove 6 which are interconnected at the top, a cavity 7 is provided inside the door frame 1 and above the first locking groove 5 and the second locking groove 6, a transmission cavity 8 is provided inside the door frame 1 and on the side corresponding to the cavity 7, a stepper motor 9 is fixedly installed at a position corresponding to the transmission cavity 8 on the outside of the door frame 1, the output shaft of the stepper motor 9 passes through the transmission cavity 8 and is fixedly connected to an active bevel gear 10, a rolling bearing 11 is fixedly installed on the right side of the inner wall of the cavity 7, a screw 12 is rotatably connected in the rolling bearing 11, and the screw 12 The left end of the screw 12 passes through the rolling bearing 11, the cavity 7 and the transmission cavity 8 in sequence and extends to the inside of the transmission cavity 8, where a driven bevel gear 13 used in conjunction with the active bevel gear 10 is fixedly connected. A translation block 14 is axially threadedly connected to the surface of the screw 12 located inside the cavity 7. The top of the translation block 14 is slidably connected to the top of the inner wall of the cavity 7 through a guide slider. A locking steel plate 15 matched with the first locking groove 5 and the second locking groove 6 is fixedly connected to the bottom of the translation block 14. A through opening 16 for the locking steel plate 15 to pass through is opened between the first locking groove 5, the second locking groove 6 and the cavity 7.
[0020] Specifically, a battery 17 is fixedly installed inside the door frame 1 and in a cavity corresponding to the left side of the transmission cavity 8 . The battery 17 is electrically connected to the stepper motor 9 , and the battery 17 can supply power to the stepper motor 9 .
[0021] Specifically, a charging hole 18 for charging the battery 17 is opened on the front of the door frame 1, and a guide rod 19 is fixedly connected to the position of the charging hole 18 on the outside of the door frame 1, and a dust baffle 20 is axially slidably connected to the guide rod 19. The charging hole 18 can be used for charging the battery 17. When charging is not needed, the dust baffle 20 can be moved on the guide rod 19 to cover the charging hole 18 to prevent dust from entering.
[0022] Specifically, a limit turn block 21 is fixedly connected to the position between the cavity 7 and the transmission cavity 8 corresponding to the surface of the screw rod 12. The limit turn block 21 is rotatably connected to the door frame 1. A plurality of balls are installed around the outer side of the limit turn block 21. The limit turn block 21 can cooperate with the rolling bearing 11 to limit the screw rod 12, thereby improving its stability during rotation. The balls reduce the friction and wear of the limit turn block 21 during rotation.
[0023] Specifically, a hook 22 is installed on the sub-door body 2, and a cat's eye 23 is provided on the main door body 3. The hook 22 can be used to hang daily necessities for easy access.
[0024] The double-door anti-theft door with an anti-pry structure has a reasonable structural design and is easy to use. It adopts a double locking method, which greatly improves the anti-theft performance of the double-door, making it difficult for lawbreakers to pry it open and enter the room. It has high safety and can fully meet usage needs.
[0025] When in use, after locking the sub-door body 2 and the main door body 3 through the door lock assembly 4, the stepper motor 9 can be turned on in the secondary locking state, so that its output shaft drives the screw 12 to rotate, and the translation block 14 threadedly connected thereto can drive the locking steel plate 15 to translate under the limiting guidance of the guide slider, so that it is at the intersection of the first locking groove 5 and the second locking groove 6, thereby playing a secondary locking role, thereby preventing criminals from breaking the door lock assembly and entering. When the main door body 3 needs to be opened, similarly, it is only necessary to move the locking steel plate 15 at the bottom of the translation block 14 to the first locking groove 5 at the top of the sub-door body 2. If the sub-door body 2 needs to be opened again, the locking steel plate 15 is moved to the left and disengaged from the first locking groove 5.
[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A double-door anti-theft door with an anti-pry structure, comprising a door frame (1), characterized in that: The inner side of the door frame (1) is hingedly connected with a sub-door body (2) and a main door body (3) through hinges, and a door lock assembly (4) is installed on the main door body (3); The sub-door body (2) and the main door body (3) are respectively provided with a first locking groove (5) and a second locking groove (6) which are interconnected at the top; a cavity (7) is provided inside the door frame (1) and located above the first locking groove (5) and the second locking groove (6); a transmission cavity (8) is provided inside the door frame (1) and on the side corresponding to the cavity (7); a stepper motor (9) is fixedly installed at a position corresponding to the transmission cavity (8) on the outside of the door frame (1); the output shaft of the stepper motor (9) passes through the transmission cavity (8) and is fixedly connected to an active bevel gear (10); a rolling bearing (11) is fixedly installed on the right side of the inner wall of the cavity (7); a screw (12) is rotatably connected to the rolling bearing (11); The left end of the screw rod (12) passes through the rolling bearing (11), the cavity (7) and the transmission cavity (8) in sequence and extends into the transmission cavity (8) to be fixedly connected with a driven bevel gear (13) used in conjunction with the active bevel gear (10). The surface of the screw rod (12) located in the cavity (7) is axially threadedly connected with a translation block (14). The top of the translation block (14) is slidably connected to the top of the inner wall of the cavity (7) through a guide slider. The bottom of the translation block (14) is fixedly connected with a locking steel plate (15) matched with the first locking groove (5) and the second locking groove (6). A through opening (16) for the locking steel plate (15) to pass through is provided between the first locking groove (5) and the second locking groove (6) and the cavity (7).
2. The double-and-double anti-theft door with an anti-pry structure according to claim 1, characterized in that: A storage battery (17) is fixedly installed inside the door frame (1) and in a cavity corresponding to the left side of the transmission cavity (8), and the storage battery (17) is electrically connected to the stepping motor (9).
3. The double-door anti-theft door with an anti-pry structure according to claim 2, characterized in that: The front of the door frame (1) is provided with a charging hole (18) for charging the storage battery (17); a guide rod (19) is fixedly connected to the position of the charging hole (18) on the outside of the door frame (1); and a dust baffle (20) is axially slidably connected to the guide rod (19).
4. The double-and-double anti-theft door with an anti-pry structure according to claim 3, characterized in that: A limit rotating block (21) is fixedly connected to the surface of the screw rod (12) at a position corresponding to the cavity (7) and the transmission cavity (8); the limit rotating block (21) is rotationally connected to the door frame (1); and a plurality of balls are mounted around the outer side of the limit rotating block (21).
5. The double-and-double anti-theft door with an anti-pry structure according to claim 4, characterized in that: The sub-door body (2) is provided with a hook (22), and the main door body (3) is provided with a cat's eye (23).