A gear box structure for a lock body

Abstract

The application discloses a gear box structure for a lock body, which comprises a shell, a motor, a first gear set, a second gear set and a third gear set arranged in the shell; a worm is connected to an output shaft of the motor, the worm is in meshing connection with the first gear set, and the first gear set is in meshing connection with the second gear set; a reversing gear is connected to a rotating shaft of the second gear set through a synchronous ring, the reversing gear is in meshing connection with the second gear set, when the second gear set rotates to a certain position, the reversing gear can be in meshing transmission with the third gear set; a rotating shaft of the third gear set is a rotating rod, the rotating rod extends to the outside of the shell and is used for being connected with a handle, and a channel for fixing a lock cylinder connecting rod is arranged in the rotating rod. After the lock is opened, the motor is reversed to make the reversing gear staggered with the third gear set, so that when the handle is twisted in the door, the door can be smoothly opened, the structure is simple, the production cost is low, and the reversing gear is reversed through the second gear set, so that the avoidance is easily completed.

Description

Technical Field

[0001] This invention relates to the field of lock body accessories technology, and in particular to a gear box structure for a lock body. Background Technology

[0002] With the rapid development of electronic technology, smart locks are being used more and more widely. Most existing smart locks use signals to control a motor that drives gear transmission to achieve locking and unlocking. After locking, the lock body needs a retraction mechanism to allow normal unlocking from the inside. Existing retraction mechanisms are quite complex, requiring many components and incurring high production costs. Summary of the Invention

[0003] In view of the above, it is necessary to provide a gear box structure for the lock body to solve the problems that the lock body's retraction structure is relatively complex, requires many parts, and has high production costs.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: a gear box structure for a lock body, comprising a housing and a motor, a first gear set, a second gear set, and a third gear set disposed within the housing;

[0005] A worm gear is connected to the output shaft of the motor. The worm gear meshes with the first gear set, and the first gear set meshes with the second gear set.

[0006] The shaft of the second gear set is connected to a reversing gear via a synchronizing ring. The reversing gear meshes with the second gear set. When the second gear set rotates to a certain position, the reversing gear can mesh with the third gear set for transmission.

[0007] The shaft of the third gear set is a rotating rod, which extends to the outside of the housing for connection with the handle. The rotating rod has a channel for fixing the lock cylinder connecting rod.

[0008] In the gearbox structure for the lock body of the present invention, the second gear set includes an upper gear and a lower gear that rotate coaxially. The size of the upper gear is smaller than that of the lower gear. The reversing gear meshes with the upper gear. The upper gear and the lower gear are separated by a frustum.

[0009] In the gear box structure for the lock body of the present invention, a turntable is mounted on a circular platform, a first magnet is provided on the side of the turntable near the lower gear, and a second magnet and a third magnet are provided on the lower gear at intervals.

[0010] In the gear box structure for the lock body of the present invention, spring plates are provided on both sides of the rotating rod.

[0011] In the gear box structure for the lock body of the present invention, the third gear set includes a gear disk and a fixed seat, the rotating rod is disposed in the fixed seat, and the gear disk is sleeved on the rotating rod.

[0012] In the gear box structure for the lock body of the present invention, a baffle is provided on the gear disk, and a number of openings are provided on the housing. A photoelectric switch is provided in the opening. During the rotation of the third gear set, the baffle will block the number of openings in sequence.

[0013] In the gear box structure for the lock body of the present invention, fixed posts are respectively provided on both sides of the housing near the first gear set, and the output shaft of the first gear set is fixed on the fixed posts by a fixing member.

[0014] In the gear box structure for the lock body of the present invention, the housing is provided with several mounting seats, and the mounting seats are provided with fixing holes.

[0015] In the gear box structure for the lock body of the present invention, a slot is provided inside the housing, and the motor is located inside the slot.

[0016] In the gearbox structure for the lock body of the present invention, the housing includes a first housing and a second housing that are detachably connected.

[0017] The beneficial effects of this invention through the above technical solution are as follows: This invention uses a motor rotating forward to drive a worm gear, causing the first and second gear sets to mesh and rotate. When the second gear set rotates to a certain position, the reversing gear meshes with the third gear set, thereby driving the lock cylinder connecting rod inside the rotating rod to rotate and unlock. After unlocking, the motor reverses to disengage the reversing gear from the third gear set. At this point, unlocking is impossible from the outside of the door, but the door can be easily opened by turning the handle from the inside. This invention has a simple structure and low production cost. By using the second gear set to drive the reversing gear to change direction, avoidance can be easily achieved, allowing unlocking from the inside of the door. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of an embodiment of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention. Figure 1 ;

[0020] Figure 3 This is a three-dimensional structural diagram of an embodiment of the present invention. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the internal structure of the housing according to an embodiment of the present invention;

[0022] Figure 5 This is an exploded view of the second gear set according to an embodiment of the present invention;

[0023] Figure 6 This is an exploded view of the installation of the third gear set according to an embodiment of the present invention.

[0024] 100. Housing; 110. Opening; 120. Fixing post; 130. Mounting base; 131. Fixing hole; 140. Slot; 200. Motor; 210. Worm gear; 200. First gear set; 310. Fixing component; 400. Second gear set; 410. Upper gear; 420. Lower gear; 421. Second magnet; 422. Third magnet; 430. Frustum; 440. Turntable; 441. First magnet; 510. Gear disk; 511. Baffle; 520. Fixing base; 600. Synchronizing ring; 700. Reversing gear; 800. Rotary rod; 810. Channel; 900. Spring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the following detailed description of a gear box structure for a lock body, in conjunction with the accompanying drawings and embodiments, is provided. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention.

[0026] Please refer to Figure 1-6 A gearbox structure for a lock body includes a housing 100 and a motor 200, a first gear set 300, a second gear set 400, and a third gear set 500 disposed within the housing 100. A worm gear 210 is connected to the output shaft of the motor 200, and the worm gear 210 meshes with the first gear set 300. The first gear set 300 meshes with the second gear set 400. The rotating shaft of the second gear set 400 is connected to a reversing gear 700 through a synchronizing ring 600. The reversing gear 700 meshes with the second gear set 400. When the second gear set 400 rotates to a certain position, the reversing gear 700 can mesh with the third gear set 500 for transmission. The rotating shaft of the third gear set 500 is a rotating rod 800, which extends to the outside of the housing 100 for connection with a handle. The rotating rod 800 has a channel for fixing the lock cylinder connecting rod.

[0027] This invention uses a motor 200 to drive a worm gear 210, causing the first gear set 300 and the second gear set 400 to mesh and rotate. When the second gear set 400 rotates to a certain position, the reversing gear 700 meshes with the third gear set 500, thereby driving the lock cylinder connecting rod inside the rotating rod 800 to rotate and unlock. After unlocking, the motor 200 reverses, causing the reversing gear 700 to disengage from the third gear set 500. At this point, the door cannot be unlocked from the outside, but can be easily unlocked and opened by turning the handle from the inside. This invention has a simple structure and low production cost. By using the second gear set 400 to drive the reversing gear 700 to change direction, it is easy to achieve avoidance, allowing the door to be unlocked from the inside.

[0028] Please refer to Figure 5In this embodiment, the second gear set 400 includes an upper gear 410 and a lower gear 420 that rotate coaxially. The upper gear 410 is smaller than the lower gear 420. The reversing gear 700 meshes with the upper gear 410, and the upper gear 410 and the lower gear 420 are separated by a frustum 430. The smaller size of the upper gear 410 facilitates meshing and transmission with the reversing gear 700.

[0029] Furthermore, a turntable 440 is mounted on the frustum 430. A first magnet 441 is provided on the turntable 440 near the lower gear 420, and a second magnet 421 and a third magnet 422 are spaced apart on the lower gear 420. When the motor 200 reverses direction, there is a magnetic force between the first magnet 441 and the second magnet 421 or the third magnet 422, which can accelerate the rotation of the lower gear 420, thereby speeding up the unlocking or locking process and assisting in reversing direction.

[0030] Please refer to Figure 6 In this embodiment, spring plates 900 are provided on both sides of the rotating rod 800. When the gear box is jammed, simply turn the handle forcefully to open the spring plates 900 on both sides of the rotating rod 800 to unlock the door. This avoids the safety hazard of people being unable to unlock the door from the inside and further improves the safety performance of the lock body.

[0031] Please refer to Figure 6 In this embodiment, the third gear set 500 includes a gear disk 510 and a fixed base 520, with the rotating rod 800 disposed inside the fixed base 520 and the gear disk 510 sleeved on the rotating rod 800.

[0032] Please refer to Figure 2 and Figure 6 Furthermore, the gear disk 510 is provided with a baffle 511, and the housing 100 is provided with several openings 110. A photoelectric switch is installed in each opening 110. During the rotation of the third gear set 500, the baffle 511 will block several openings 110 in sequence. By detecting the baffles 511 at different positions, the photoelectric switches can detect whether the lock body is locked, and thus send a signal to the circuit board to control the motor 200 to rotate, so that the reversing gear 700 is misaligned with the third gear set 500.

[0033] Please refer to Figure 4 In this embodiment, fixing posts 120 are respectively provided on both sides of the housing 100 near the first gear set 300, and the output shaft of the first gear set 300 is fixed to the fixing posts 120 by fixing members 310. Since the first gear set 300 is meshed with the worm gear 210, adding fixing members 310 can make the first gear set 300 rotate more smoothly and prevent it from shifting.

[0034] Please refer to Figure 1In this embodiment, the housing 100 is provided with a plurality of mounting seats 130, and the mounting seats 130 are provided with fixing holes 131 to facilitate the installation and fixing of the present invention.

[0035] Please refer to Figure 4 In this embodiment, the housing 100 is provided with a slot 140, and the motor 200 is located in the slot 140 to facilitate the fixing of the motor 200.

[0036] In this embodiment, the housing 100 includes a first housing and a second housing that are detachably connected, which facilitates the installation and maintenance of internal components.

[0037] The working principle of this invention is as follows:

[0038] When the motor 200 receives the unlocking signal, the motor 200 rotates forward, driving the worm gear 210 to rotate, causing the first gear set 300 and the second gear set 400 to mesh and rotate. When the second gear set 400 rotates to a certain position, the reversing gear 700 meshes with the third gear set 500, thereby driving the lock cylinder connecting rod inside the rotating rod 800 to rotate and unlock. After unlocking, the motor 200 reverses, causing the reversing gear 700 and the third gear set 500 to disengage. At this time, the door cannot be opened from the outside, but the door can be opened smoothly from the inside by turning the handle, which drives the rotating rod 800 and the third gear set 500 to rotate.

[0039] When the gearbox is jammed, the third gear set 500 cannot rotate. At this time, turning the handle slightly inside the door will not unlock it. More force is needed to make the rotating rod 800 spread open the spring plates 900 on both sides to unlock it.

[0040] Any aspects of this invention not described in detail are well-known to those skilled in the art.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A gear box structure for a lock body, characterized by, The shell (100) and the motor (200), the first gear set (300), the second gear set (400) and the third gear set (500) arranged in the shell (100); The output shaft of the motor (200) is connected with a worm (210), the worm (210) is in meshing connection with the first gear set (300), and the first gear set (300) is in meshing connection with the second gear set (400); The rotating shaft of the second gear set (400) is connected with a reversing gear (700) through a synchronous ring (600), the reversing gear (700) is in meshing connection with the second gear set (400), and when the second gear set (400) rotates to a certain position, the reversing gear (700) can be in meshing transmission with the third gear set (500); The rotating shaft of the third gear set (500) is a rotating rod (800), the rotating rod (800) extends to the outside of the shell (100) for being connected with a handle, and the rotating rod (800) is internally provided with a channel (810) for fixing a lock cylinder connecting rod; The second gear set (400) comprises coaxially rotating upper gears (410) and lower gears (420), the size of the upper gears (410) is smaller than the size of the lower gears (420), the reversing gear (700) is in meshing connection with the upper gears (410), and the upper gears (410) and the lower gears (420) are separated by a circular table (430); A rotating disc (440) is sleeved on the circular table (430), the rotating disc (440) is provided with a first magnet (441) on the side close to the lower gears (420), and the lower gears (420) are provided with a second magnet (421) and a third magnet (422) at intervals; The rotating rod (800) is provided with elastic sheets (900) on both sides; The third gear set (500) comprises a gear disc (510) and a fixed seat (520), the rotating rod (800) is arranged in the fixed seat (520), and the gear disc (510) is sleeved on the rotating rod (800); The gear disc (510) is provided with a baffle (511), the shell (100) is provided with a plurality of openings (110), the openings (110) are provided with photoelectric switches, and the baffle (511) will successively block a plurality of the openings (110) in the process of rotation of the third gear set (500); The shell (100) is provided with fixed columns (120) on both sides close to the first gear set (300), and the output shaft of the first gear set (300) is fixed on the fixed columns (120) through a fixing piece (310).

2. A gear box structure for a lock body according to claim 1, characterized in that, The shell (100) is provided with a plurality of mounting seats (130), and the mounting seats (130) are provided with fixed holes (131).

3. A gear box structure for a lock body according to claim 1, wherein The shell (100) is provided with a clamping groove (140), and the motor (200) is arranged in the clamping groove (140).

4. The gear box structure for a lock body according to claim 1, wherein The shell (100) comprises a first shell and a second shell which can be detachably connected.

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