Anti-theft door with gear transmission upper locking device and gear transmission lower locking device
By using gear transmission upper and lower locking devices in the anti-theft door, the contact area between the door sill, the door body and the door frame is increased, the problem of insufficient anti-theft door anti-damage and anti-theft capabilities is solved, and higher anti-damage and anti-theft capabilities are achieved, and wear and noise pollution is reduced.
Patent Information
- Application Number
- CN202421224078.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The contact area between the locked door and the door frame is small, resulting in poor anti-destructive ability and insufficient anti-theft ability.
The gear drives the upper and lower locking devices, and the gears are driven to rotate by operating the handwheel, driving the limit plate to move, increasing the contact area between the door sill, the door body and the door frame, improving the locking strength, and reducing friction and wear through the ball sleeve and the roller.
It improves the anti-destructive and anti-theft capabilities of the door body, reduces friction and wear, and reduces noise pollution.
Smart Images
Figure CN222576527U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anti-theft doors, in particular to an anti-theft door with upper and lower locking devices driven by gears. Background Art
[0002] The anti-theft door is equipped with an anti-theft lock, which can resist abnormal opening under certain conditions within a certain period of time, has certain safety protection performance and meets the corresponding anti-theft security level. The full name of the anti-theft door is "anti-theft security door". It has both anti-theft and safety performance. According to the "General Technical Conditions for Anti-theft Security Doors", qualified anti-theft doors cannot be pried open or open a 615 square millimeter opening on the door leaf within 15 minutes using ordinary hand tools such as chisels, screwdrivers, crowbars, and portable power tools such as hand drills, or open a 38 square millimeter opening within a semicircle of 150 square millimeters at the locking point. And the locks used on anti-theft doors must be special anti-theft door locks with anti-drilling functions that have passed the inspection of the Ministry of Public Security Testing Center. Anti-theft doors can be made of different materials, but only doors that meet the standard inspection and obtain the production license for security products can be called anti-theft doors.
[0003] With respect to the above-mentioned related technologies, the inventor believes that there are the following defects:
[0004] For anti-theft doors, the contact area between the door body and the door frame after locking is small, resulting in poor anti-destruction ability of the door body and insufficient anti-theft ability. Therefore, it is necessary to provide an anti-theft door with a gear transmission upper and lower locking device to solve the above technical problems. Utility Model Content
[0005] The technical problem to be solved by the utility model is that for the anti-theft door, the contact area between the door body and the door frame after locking is small, resulting in poor anti-destruction ability of the door body and insufficient anti-theft ability. In view of the above-mentioned defects of the prior art, an anti-theft door with a gear transmission upper and lower locking device is provided, including a door frame and a threshold, one end of the rotating shaft passes through the door body and is fixedly connected with an operating hand wheel, and a pin fixing groove is provided on the outer side of the rotating shaft, and the door lock body includes a lock pin plugged with the pin fixing groove. The utility model drives the gear connected to it through the rotating shaft to rotate by rotating the operating hand wheel, and then drives the limit plate connected by the rack to move, so that it is inserted into the inside of the first limit groove and the second limit groove, thereby increasing the contact area between the threshold, the door body and the door frame, and improving the locking strength, and a ball bearing sleeve is arranged between the rack and the L-shaped rod, and a roller is arranged between the limit plate and the door body, so that friction can be avoided, wear and noise pollution can be reduced, and the technical problem that the contact area between the door body and the door frame after locking is small, resulting in poor anti-destruction ability of the door body and insufficient anti-theft ability is solved.
[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is: an anti-theft door with a gear-driven upper and lower locking device, comprising a door frame and a threshold, a second limiting groove is provided on the upper surface of the threshold, a first limiting groove is provided on the upper surface of the inner cavity of the door frame, and a door body is rotatably connected to the inner side of the door frame, a cavity is provided inside the door body, an L-shaped rod is symmetrically fixedly installed on the inner side of the cavity, a ball bearing sleeve is sleeved on the outer side of each of the L-shaped rods, a rectangular block is sleeved on the outer side of the ball bearing sleeve, and racks are fixedly installed on the opposite surfaces of the two rectangular blocks, one end of the rack is fixedly connected to a limiting plate that passes through the door body, rollers are fixedly installed on both sides of the limiting plate, and the limiting plate is located inside the first limiting groove and the second limiting groove, a rotating shaft and a door lock body are respectively arranged on the inner side of the cavity, one end of the rotating shaft passes through the door body and is fixedly connected to an operating hand wheel, and a pin fixing groove is provided on the outer side of the rotating shaft, and the door lock body includes a lock pin plugged into the pin fixing groove.
[0007] It is further provided that the other end of the rotating shaft is connected to the door lock body via a bearing, and the lock opening of the door lock body is located on the outside of the door body.
[0008] It is further provided that a limit frame is fixedly installed on the inner side of the door frame, and the limit frame is in a U-shaped structure.
[0009] It is further provided that the rear surface of the limit frame is in contact with the door body, and the door frame is in a U-shaped structure.
[0010] It is further provided that notches are symmetrically provided at the bottom of the door frame, and protrusions which are plugged into the notches are fixedly connected to both ends of the door sill.
[0011] It is further provided that the bottom of the door frame is symmetrically provided with mounting grooves, a spring is fixedly installed on the inner side of each mounting groove, one end of the spring is fixedly connected with an insertion block connected with the notch, and one end of the insertion block is plugged into the protrusion.
[0012] It is further provided that the insertion block is in an L-shaped structure, and a longitudinal section of the insertion block is in a rectangular structure.
[0013] Compared with the related art, the anti-theft door with gear-driven upper and lower locking devices provided by the utility model has the following beneficial effects:
[0014] The utility model provides an anti-theft door with upper and lower locking devices driven by gears, which drives the gear connected to the anti-theft door through a rotating shaft to rotate by rotating the operating hand wheel, thereby driving the limit plate connected through the rack to move, so that the limit plate is inserted into the inside of the first limit groove and the second limit groove, thereby increasing the contact area between the door sill, the door body and the door frame, and improving the locking strength. In addition, a ball bushing is arranged between the rack and the L-shaped rod, and a roller is arranged between the limit plate and the door body, thereby avoiding friction, reducing wear and noise pollution, and solving the technical problem that the contact area between the door body and the door frame after locking is small, resulting in poor anti-destruction ability of the door body and insufficient anti-theft ability.
[0015] The utility model provides an anti-theft door with upper and lower locking devices driven by gears, wherein the threshold and the door body are connected by means of a convex block and a notch, and the elastic force of a spring is utilized to insert one end of a fixed block connected thereto into the inside of the convex block, thereby facilitating a firm connection between the threshold and the door body and improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A structural schematic diagram of a preferred embodiment of the anti-theft door with gear-driven upper and lower locking devices provided by the utility model;
[0017] Figure 2 It is a bottom view of the utility model;
[0018] Figure 3 This is a schematic diagram of the main structure of the utility model;
[0019] Figure 4 It is a partial enlarged view of part A of the utility model.
[0020] Numbers in the figure: 1. door body; 2. operating hand wheel; 3. door frame; 4. limit frame; 5. door sill; 6. spring; 7. mounting groove; 8. plug-in block; 9. notch; 10. protrusion; 11. first limit groove; 12. ball bearing sleeve; 13. rack; 14. second limit groove; 15. rectangular block; 16. L-shaped rod; 17. cavity; 18. limit plate; 19. roller; 20. gear; 21. rotating shaft; 22. pin fixing groove; 23. lock pin; 24. door lock body. DETAILED DESCRIPTION
[0021] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings show typical embodiments of the present invention.
[0022] Embodiment 1:
[0023] like Figure 1-4As shown, the anti-theft door with gear transmission upper and lower locking devices of the utility model comprises a door frame 3 and a threshold 5, the upper surface of the threshold 5 is provided with a second limiting groove 14, the upper surface of the inner cavity of the door frame 3 is provided with a first limiting groove 11, and the inner side of the door frame 3 is rotatably connected with a door body 1, the interior of the door body 1 is provided with a cavity 17, and the inner side of the cavity 17 is symmetrically fixedly installed with L-shaped rods 16, the outer side of each L-shaped rod 16 is sleeved with a ball bearing sleeve 12, and the outer side of the ball bearing sleeve 12 is sleeved with a rectangular block 15, and the two rectangular blocks 15 A rack 13 is fixedly installed on the opposite surfaces, one end of the rack 13 is fixedly connected to a limit plate 18 that passes through the door body 1, rollers 19 are fixedly installed on both sides of the limit plate 18, and the limit plate 18 is located inside the first limit groove 11 and the second limit groove 14, and a rotating shaft 21 and a door lock body 24 are respectively provided on the inner side of the cavity 17, one end of the rotating shaft 21 passes through the door body 1 and is fixedly connected to an operating hand wheel 2, and a pin fixing groove 22 is opened on the outer side of the rotating shaft 21, and the door lock body 24 includes a lock pin 23 inserted into the pin fixing groove 22.
[0024] like Figure 3 As shown, the other end of the rotating shaft 21 is connected to the door lock body 24 via a bearing, and the lock opening of the door lock body 24 is located on the outside of the door body 1.
[0025] During implementation, by rotating the operating hand wheel 2, the gear 20 connected to it by the rotating shaft 21 is driven to rotate, and then the limiting plate 18 connected by the rack 13 is driven to move, so that it is inserted into the first limiting groove 11 and the second limiting groove 14, thereby increasing the contact area between the threshold 5, the door body 1 and the door frame 3, and improving the locking strength. In addition, a ball bushing 12 is arranged between the rack 13 and the L-shaped rod 16, and a roller 19 is arranged between the limiting plate 18 and the door body 1, so as to avoid friction, reduce wear and noise pollution, and solve the technical problem that for the anti-theft door, the contact area between the door body 1 and the door frame 3 after locking is small, resulting in poor anti-destruction ability of the door body 1 and insufficient anti-theft ability.
[0026] Embodiment 2:
[0027] like Figure 1-4 As shown, on the basis of embodiment 1, the utility model provides a technical solution: a limit frame 4 is fixedly installed on the inner side of the door frame 3, the limit frame 4 is in a U-shaped structure, the rear surface of the limit frame 4 is in contact with the door body 1, the door frame 3 is in a U-shaped structure, the bottom of the door frame 3 is symmetrically provided with notches 9, both ends of the door sill 5 are fixedly connected with protrusions 10 plugged into the notches 9, the bottom of the door frame 3 is symmetrically provided with mounting grooves 7, a spring 6 is fixedly installed on the inner side of each mounting groove 7, one end of the spring 6 is fixedly connected with an insert block 8 connected to the notch 9, one end of the insert block 8 is plugged into the protrusion 10, the insert block 8 is in an L-shaped structure, and the longitudinal section of the insert block 8 is a rectangular structure.
[0028] During implementation, the threshold 5 and the door body 1 are connected by means of a protrusion 10 and a notch 9, and at the same time, the elastic force of the spring 6 is utilized to insert one end of the plug-in block 8 connected thereto into the inside of the protrusion 10, thereby facilitating a firm connection between the threshold 5 and the door body 1 and improving assembly efficiency.
[0029] When the threshold 5 of the present technical solution is assembled with the door body 1, the insertion block 8 is first pulled to compress the spring 6 so that one end of the insertion block 8 is separated from the inside of the notch 9, and then the protrusions 10 at both ends of the threshold 5 are inserted into the notch 9 opened by the door body 1, and finally the insertion block 8 is released. At this time, under the elastic force of the spring 6, one end of the insertion block 8 is inserted into the inside of the protrusion 10, so that the threshold 5 is firmly connected with the door body 1. When in use, the door body 1 is first closed to make it contact with the limit frame 4, and then the operating hand wheel 2 is rotated to drive the gear 20 connected to it through the rotating shaft 21 to rotate, and the limit plate 18 connected through the rack 13 is moved to be inserted into the first limit groove 11 and the second limit groove 14. When the rack 13 moves, the ball sleeve 12 moves along the outer side of the L-shaped rod 16, and the roller 19 rolls along the inner side of the door body 1. Finally, the door lock body 24 is operated by the key so that the lock pin 23 is inserted into the pin fixing groove 22 opened by the rotating shaft 21.
[0030] Although 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. An anti-theft door with upper and lower locking devices driven by gears, comprising a door frame (3) and a threshold (5), characterized in that: A second limiting groove (14) is provided on the upper surface of the threshold (5), a first limiting groove (11) is provided on the upper surface of the inner cavity of the door frame (3), and the inner side of the door frame (3) is rotatably connected to the door body (1), a cavity (17) is provided inside the door body (1), an L-shaped rod (16) is symmetrically fixedly installed on the inner side of the cavity (17), a ball bearing sleeve (12) is sleeved on the outer side of each L-shaped rod (16), a rectangular block (15) is sleeved on the outer side of the ball bearing sleeve (12), and a rack (13) is fixedly installed on the opposite surfaces of the two rectangular blocks (15), and the rack (13) is fixedly installed on the opposite sides of the two rectangular blocks (15). One end of the door lock (3) is fixedly connected to a limit plate (18) that passes through the door body (1), and rollers (19) are fixedly installed on both sides of the limit plate (18), and the limit plate (18) is located inside the first limit groove (11) and the second limit groove (14), and the inner side of the cavity (17) is respectively provided with a rotating shaft (21) and a door lock body (24), one end of the rotating shaft (21) passes through the door body (1) and is fixedly connected to an operating hand wheel (2), and a pin fixing groove (22) is provided on the outer side of the rotating shaft (21), and the door lock body (24) includes a lock pin (23) plugged into the pin fixing groove (22).
2. The anti-theft door with gear-driven upper and lower locking devices according to claim 1, characterized in that: The other end of the rotating shaft (21) is connected to the door lock body (24) via a bearing, and the lock opening of the door lock body (24) is located outside the door body (1).
3. The anti-theft door with gear-driven upper and lower locking devices according to claim 1, characterized in that: A limiting frame (4) is fixedly installed on the inner side of the door frame (3), and the limiting frame (4) is in a U-shaped structure.
4. The anti-theft door with gear-driven upper and lower locking devices according to claim 3, characterized in that: The rear surface of the limiting frame (4) is in contact with the door body (1), and the door frame (3) is in a U-shaped structure.
5. The anti-theft door with gear-driven upper and lower locking devices according to claim 1, characterized in that: The bottom of the door frame (3) is symmetrically provided with notches (9), and both ends of the door sill (5) are fixedly connected with protrusions (10) plugged into the notches (9).
6. The anti-theft door with gear-driven upper and lower locking devices according to claim 5, characterized in that: The door frame (3) is symmetrically provided with mounting grooves (7), and a spring (6) is fixedly installed on the inner side of each mounting groove (7). One end of the spring (6) is fixedly connected to an insertion block (8) connected to the notch (9), and one end of the insertion block (8) is plugged into the protrusion (10).
7. The anti-theft door with gear-driven upper and lower locking devices according to claim 6, characterized in that: The insertion block (8) is in an L-shaped structure, and the longitudinal section of the insertion block (8) is in a rectangular structure.