Multi-point lock gearbox structure

Abstract

The invention discloses a multi-point lock gearbox structure, and relates to the technical field of locks. The device comprises a circuit board, a motor, a worm, a worm gear, a gear A, a gear B, a gear C, a gear D, a zeroing gear, a driving part, a zeroing mechanism, a mounting shell and a mounting plate, the motor is fixed in the mounting shell, an output shaft of the motor is connected with the worm, and the worm is meshed with the worm gear; the worm gear is coaxially and fixedly connected with the gear A, and the gear A is meshed with the gear B. Efficient power transmission is achieved through a multi-stage gear transmission system, and it is ensured that the lock body operates stably and reliably. The zero returning mechanism and the stroke control design greatly improve the positioning precision, and position deviation is avoided. The buffer structure effectively absorbs impact, and operation noise is remarkably reduced. The integral structure is compact and reasonable, the transmission efficiency is high, the service life is long, the problems that a traditional multi-point lock is insufficient in precision, large in noise, difficult to maintain and the like are solved, and the high-standard locking requirement can be better met.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, and in particular to a multi-point lock gear box structure. Background Art

[0002] With the rapid development of the smart home and security industries, fully automatic multi-point locks have gained widespread adoption in door and window locks due to their convenience and security. Traditional locks, which mostly utilize a single-point locking mechanism, lack the security and stability required by the high standards of modern architecture. To address this, the industry has gradually developed motor-driven multi-point locks that utilize a gear transmission system to achieve synchronized control of multiple locking points. However, existing multi-point lock gearbox structures still leave room for improvement in transmission accuracy, homing control, and mechanical durability.

[0003] Existing multi-point lock gearbox structures suffer from the following major drawbacks: First, the transmission system lacks a precise zero-positioning function, causing the lock body to easily shift position after repeated use, affecting locking effectiveness. Second, the gearbox's inadequate buffering design causes the driver to generate impact noise at extreme motion limits, reducing its service life. Furthermore, existing structures often employ complex housing designs, making assembly and maintenance difficult and increasing production costs. Therefore, a multi-point lock gearbox structure with precise transmission, high stability, and ease of maintenance is urgently needed.

[0004] For this reason, a multi-point lock gear box structure is proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems mentioned in the above background technology, and the present invention provides a multi-point lock gear box structure.

[0006] In order to achieve the above-mentioned object, the present invention specifically adopts the following technical solutions: a multi-point lock gearbox structure, including a circuit board, a motor, a worm, a worm wheel, gear A, gear B, gear C, gear D, a zeroing gear, a driving member, a zeroing mechanism, a mounting shell and a mounting plate; The motor is fixed in the mounting housing, and its output shaft is connected to the worm, which is meshed with the worm wheel; The worm gear is coaxially fixedly connected to gear A, gear A is meshed with gear B, gear B is meshed with gear C, gear C is meshed with gear D, and gear D is connected to the driving member to drive the driving member to move in the up and down directions; The zeroing mechanism includes a zeroing gear, a strong magnet, and a zeroing induction plate. The zeroing gear is coaxially mounted with gear D. The strong magnet is disposed on the zeroing gear. The zeroing induction plate is fixedly disposed and provided with a Hall sensor for sensing the position signal of the strong magnet to control the motor to be positioned at the initial state. The mounting shell is used to fix the motor, the worm and the worm wheel, and the mounting plate is used to support the transmission structure between gears A to D.

[0007] Furthermore, a damping member is provided above the driving member. The damping member is made of silicone material and is mounted on the mounting shell, and contacts the driving member at the extreme position of movement.

[0008] Furthermore, the driving member is provided with a stroke control member, and the stroke control member cooperates with an optical coupling sensor installed on the mounting shell to limit the movement stroke of the driving member.

[0009] Furthermore, the gear A is coaxially fixedly connected to the worm gear, and the gear A is meshed with the gear B, gear C and gear D in sequence. The gear D is connected to the driving member through a mechanical connection to form a multi-stage transmission structure.

[0010] Furthermore, it also includes a rack and a ball bearing; the rack is fixedly connected to the driving member, and the rack is engaged with the gear D, and the ball bearing is arranged on the sliding path of the rack and installed in the mounting shell.

[0011] Furthermore, the mounting shell and the mounting plate adopt a split or integrated structure, which are used to fix the gear transmission assembly and provide mechanical support.

[0012] The beneficial effects of the present invention are as follows: 1. The coordinated design of the zero return gear and Hall effect sensor achieves precise origin positioning of the drive element. The synergistic effect of the powerful magnet and the zero return sensor plate detects the position signal in real time and feeds it back to the control system, ensuring that the motor accurately returns to its initial position after each movement. This effectively solves the offset problem caused by cumulative error in traditional lock bodies and improves the long-term reliability of the lock.

[0013] 2. The silicone damper installed above the drive element provides flexible cushioning at the extremes of motion, significantly reducing mechanical shock and operating noise. Combined with the ball bearing support for the rack sliding path, it further reduces friction loss and extends the service life of the gearbox.

[0014] 3. The split or integrated mounting housing and mounting plate design simplifies the assembly process and facilitates subsequent maintenance. The multi-stage transmission structure of the gear set is compactly arranged, ensuring transmission efficiency while reducing the complexity of the overall structure, which is conducive to large-scale production.

[0015] 4. The linkage design of the stroke control element and the optical coupling sensor can accurately limit the movement stroke of the driver to avoid the risk of overload; at the same time, the independent operation of the zeroing mechanism ensures that the driver can still be mechanically operated after the motor power is cut off, enhancing the emergency function of the lock.

[0016] 5. The cooperation between the worm and the worm wheel realizes high torque transmission. Combined with the four-stage gear reduction structure, it improves the movement stability while ensuring the driving force. It is particularly suitable for the multi-point locking requirements of heavy doors and windows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of the structure of the present invention; Figure 2 It is an exploded view of the structure of the present invention; Figure 3 It is a schematic diagram of the circuit board structure of the present invention; Figure 4 It is a schematic diagram of the local structure of the present invention; Figure numerals: 1 circuit board, 2 motor, 3 worm, 4 worm wheel, 5 gear B, 6 gear C, 7 gear D, 8 zeroing gear, 9 strong magnet, 10 zeroing sensor plate, 11 driving part, 12 damping part, 13 stroke control part, 14 ball bearing, 15 rack, 16 mounting shell, 17 mounting plate, 18 gear A. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0021] The electrical components mentioned in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that performs control such as a computer.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0023] like Figures 1 to 4 As shown, the multi-point lock gearbox structure includes a circuit board 1, a motor 2, a worm 3, a worm wheel 4, a gear A18, a gear B5, a gear C6, a gear D7, a zeroing gear 8, a driving member 11, a zeroing mechanism, a mounting shell 16 and a mounting plate 17; The motor 2 is fixed in the mounting housing 16, and its output shaft is connected to the worm 3, which is meshed with the worm wheel 4; The worm gear 4 is coaxially fixedly connected to the gear A18, the gear A18 is meshed with the gear B5, the gear B5 is meshed with the gear C6, the gear C6 is meshed with the gear D7, and the gear D7 is connected to the driving member 11 to drive the driving member 11 to move in the up and down directions; The zeroing mechanism includes a zeroing gear 8, a strong magnet 9, and a zeroing sensing plate 10. The zeroing gear 8 is coaxially mounted with the gear D7. The strong magnet 9 is mounted on the zeroing gear 8. The zeroing sensing plate 10 is fixed and has a Hall sensor mounted thereon for sensing the position signal of the strong magnet 9 to control the positioning of the motor 2 at the initial state. The mounting housing 16 is used to fix the motor 2 , the worm 3 and the worm wheel 4 , and the mounting plate 17 is used to support the transmission structure between the gear A18 and the gear D7 .

[0024] More specifically, in the present invention, motor 2 is controlled by circuit board 1. The motor's output shaft is connected to worm 3, which meshes with worm gear 4, forming a first-stage reduction gear system. Worm gear 4 is coaxially fixedly connected to gear A18, which in turn meshes with gears B5, C6, and D7, forming a multi-stage gear transmission system. Gear D7 is connected to driver 11, driving it in the vertical direction.

[0025] To achieve precise origin positioning, zero return gear 8 is coaxially mounted with gear D7 and is topped with a powerful magnet 9. When magnet 9 approaches the Hall effect sensor on zero return sensing plate 10, the sensor detects the change in magnetic field and sends a signal. The control system then determines that motor 2 has returned to its initial position and stops operation, thus achieving the "zero return" function.

[0026] The mounting housing 16 is used to fix the motor 2, the worm 3 and the worm wheel 4, and the mounting plate 17 is used to support the transmission structure between the gear A18 and the gear D7 to ensure the stability and reliability of the entire transmission system.

[0027] A damping member 12 is provided above the driving member 11 . The damping member 12 is made of silicone material and is mounted on the mounting shell 16 , contacting the driving member 11 at the extreme position of movement.

[0028] It should be noted that the damping element 12 is made of silicone and is mounted on the mounting housing 16, above the driver 11. When the driver 11 reaches its limit, it contacts the damping element 12, forming a flexible buffer. Silicone has excellent elasticity and wear resistance, effectively absorbing impact forces, reducing noise, and extending the life of the structure.

[0029] The driving member 11 is provided with a stroke control member 13 , which cooperates with an optical coupling sensor mounted on the mounting housing 16 to limit the movement stroke of the driving member 11 .

[0030] More specifically, the travel control member 13 is mounted on the driver 11 and cooperates with an optocoupler sensor mounted on the mounting housing 16. When the driver 11 moves, the travel control member 13 moves with it. When the travel control member 13 blocks the optical path of the optocoupler sensor, the optocoupler sensor sends a signal, which the control system receives and stops the motor 2, thereby limiting the travel of the driver 11 and preventing overshoot or jamming.

[0031] Gear A18 is coaxially fixedly connected to the worm gear 4 , and gear A18 is meshed with gear B5 , gear C6 and gear D7 in sequence. Gear D7 is connected to the driving member 11 through a mechanical connection to form a multi-stage transmission structure.

[0032] It should be noted that gear A18 is coaxially and fixedly connected to worm gear 4, forming the first stage of the gear transmission. Gear A18 meshes sequentially with gears B5, C6, and D7, forming a multi-stage gear transmission system. Gear D7 is mechanically connected to driver 11, converting rotational motion into vertical linear motion of driver 11. This multi-stage gear transmission structure offers advantages such as smooth transmission, high torque, and low noise, making it suitable for high-load multi-point locking systems.

[0033] It also includes a rack 15 and a ball bearing 14 ; the rack 15 is fixedly connected to the driving member 11 , and the rack 15 is engaged with the gear D7 , and the ball bearing 14 is arranged on the sliding path of the rack 15 and installed in the mounting shell 16 .

[0034] More specifically, rack 15 is fixedly connected to driver 11 and meshes with gear D7, converting the rotational motion of gear D7 into vertical linear motion of driver 11. Ball bearings 14 are positioned along the sliding path of rack 15 and mounted within mounting housing 16 to support and guide the movement of rack 15, reducing friction and ensuring smooth movement.

[0035] The mounting shell 16 and the mounting plate 17 are of split or integrated structure and are used to fix the gear transmission assembly and provide mechanical support.

[0036] It should be noted that the split structure is easier to assemble and maintain, while the integrated structure has higher structural strength and stability. Both structures can effectively fix the gear transmission components and provide reliable mechanical support.

[0037] In summary: Through the coordinated design of the zeroing gear 8 and the Hall sensor, the precise origin positioning of the driving member 11 is achieved. The synergistic effect of the strong magnet 9 and the zeroing sensor plate 10 can detect the position signal in real time and feed it back to the control system, ensuring that the motor 2 can accurately return to the initial position after each action, effectively solving the offset problem caused by the cumulative error of the traditional lock body, and improving the long-term reliability of the lock. The silicone damping member 12 arranged above the driving member 11 provides flexible buffering at the extreme position of movement, significantly reducing mechanical shock and operating noise. Combined with the support of the ball bearing 14 on the sliding path of the rack 15, the friction loss is further reduced and the service life of the gearbox is extended. The split or integrated mounting shell 16 and mounting plate 17 design simplifies the assembly process and facilitates later maintenance. The multi-stage transmission structure of the gear set AD has a compact layout. While ensuring transmission efficiency, it reduces the complexity of the overall structure, which is conducive to large-scale production. The linkage between the travel control element 13 and the optical coupler sensor precisely limits the travel of the driver 11, preventing overload risks. Furthermore, the independent operation of the zero reset mechanism ensures that the driver can still be operated mechanically, such as by a key, even after the motor loses power, enhancing the lock's emergency function. The worm 3 and worm wheel 4 achieve high-torque transmission, and combined with a four-stage gear reduction structure, this ensures both driving force and smooth movement, making it particularly suitable for multi-point locking requirements on heavy doors and windows.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. Multi-point lock gearbox structure, characterized in that, It includes a circuit board (1), a motor (2), a worm (3), a worm wheel (4), a gear A (18), a gear B (5), a gear C (6), a gear D (7), a zeroing gear (8), a driving member (11), a zeroing mechanism, a mounting shell (16) and a mounting plate (17); The motor (2) is fixed in the mounting housing (16), and its output shaft is connected to the worm (3), and the worm (3) is meshed with the worm wheel (4); The worm gear (4) is coaxially fixedly connected to the gear A (18), the gear A (18) is meshed with the gear B (5), the gear B (5) is meshed with the gear C (6), the gear C (6) is meshed with the gear D (7), and the gear D (7) is connected to the driving member (11) for driving the driving member (11) to move in the up and down directions; The zeroing mechanism comprises a zeroing gear (8), a strong magnet (9) and a zeroing induction plate (10), wherein the zeroing gear (8) is coaxially mounted with the gear D (7), the strong magnet (9) is arranged on the zeroing gear (8), and the zeroing induction plate (10) is fixedly arranged and provided with a Hall sensor for sensing a position signal of the strong magnet (9) to control the motor (2) to be positioned at an initial state; The mounting housing (16) is used to fix the motor (2), the worm (3) and the worm wheel (4), and the mounting plate (17) is used to support the transmission structure between the gear A (18) and the gear D (7).

2. The multi-point lock gearbox structure according to claim 1, characterized in that: A damping member (12) is provided above the driving member (11); the damping member (12) is made of a silicone material and is mounted on a mounting shell (16), and contacts the driving member (11) at a movement limit position.

3. The multi-point lock gearbox structure according to claim 1, characterized in that: The driving member (11) is provided with a stroke control member (13), and the stroke control member (13) cooperates with an optical coupling sensor mounted on the mounting shell (16) to limit the movement stroke of the driving member (11).

4. The multi-point lock gearbox structure according to claim 1, characterized in that: The gear A (18) is coaxially fixedly connected to the worm gear (4), and the gear A (18) is meshed with the gear B (5), the gear C (6) and the gear D (7) in sequence. The gear D (7) is connected to the driving member (11) through a mechanical connection to form a multi-stage transmission structure.

5. The multi-point lock gear box structure according to claim 1, characterized in that: It also includes a rack (15) and a ball bearing (14); the rack (15) is fixedly connected to the driving member (11), and the rack (15) is engaged with the gear D (7); the ball bearing (14) is arranged on the sliding path of the rack (15) and is installed in the mounting shell (16).

6. The multi-point lock gearbox structure according to claim 1, characterized in that: The mounting shell (16) and the mounting plate (17) are of split or integrated structure and are used to fix the gear transmission assembly and provide mechanical support.

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