Mute door lock spring bolt transmission mechanism

Abstract

The utility model relates to the technical field of door locks, and discloses a mute door lock spring bolt transmission mechanism which comprises a lock box, a lining plate, a spring bolt, a sliding groove, a limiting end, a buffering cushion, a pull rod, a spring, a spring seat, a driven gear, a worm gear, an oil guide pipe, sound insulation cotton, a waterproof film and a fastening bolt. And the correct position is kept to ensure the elastic effect. The mute door lock spring bolt transmission mechanism has the main advantages that due to the efficient conversion mechanism and the noise reduction characteristic of the mute door lock spring bolt transmission mechanism, the rotating motion of the motor is smoothly converted into the linear motion of the spring bolt through cooperation of the worm gear and the worm, the stability and accuracy of spring bolt operation are guaranteed through the mechanism, noise generated by mechanical friction can be effectively reduced, and the service life of the spring bolt is prolonged. The design of the worm gear and the worm allows a large reduction ratio, so that the motor can run at a low speed, the sound in the operation process is further reduced, and the door lock is quieter in the opening and closing process.

Description

Technical Field

[0001] The utility model relates to the technical field of door locks, in particular to a silent door lock bolt transmission mechanism. Background Art

[0002] Door locks are basic mechanical devices that ensure the safety of homes and offices. They are used to control the opening and closing of doors. Traditional door locks use manually operated keys or knobs to control the extension and retraction of the lock tongue to achieve the locking and unlocking functions. The lock tongue transmission mechanism is the core part of the door lock, which is responsible for converting the operating force into the movement of the lock tongue, so that the lock tongue extends or retracts from the lock body, thereby locking or opening the door. This mechanism usually includes driving elements such as worm gears, gears, springs, etc., and ensures the smooth movement of the lock tongue through a complex transmission system.

[0003] The traditional bolt transmission mechanism has several disadvantages. First, due to the direct metal friction between the mechanical parts, the operation is often accompanied by a loud noise, which is particularly noticeable and unwelcome at night or in an environment that needs to be quiet. Secondly, this friction also increases the wear of the parts, reducing the durability and reliability of the lock. In addition, the traditional mechanical lock is difficult to integrate more advanced security technologies such as intelligent control and remote monitoring in design, which limits its application scope in modern security needs. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] The purpose of the utility model is to provide a silent door lock bolt transmission mechanism to solve the problems of the traditional bolt transmission mechanism mentioned in the background art that the traditional bolt transmission mechanism has high noise and is easy to wear during use.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a silent door lock bolt transmission mechanism, which comprises a lock box, a lining plate, a lock tongue, a sliding groove, a limit end, a buffer pad, a pull rod, a spring, a spring seat, a guide sleeve, a worm, a motor, a gear box, a rotating shaft, a driving tooth, a driven tooth, a worm wheel, an oil guide pipe, sound insulation cotton, a waterproof membrane and a fastening bolt, a lining plate is arranged at the front end of the lock box, a lock tongue is arranged at the middle part of the lining plate, sliding grooves are arranged on the left and right sides of the lock tongue, a limit end is arranged at the rear end of the lock tongue, a buffer pad is arranged at the front end of the limit end, a pull rod is arranged at the rear end of the lock tongue, a spring is arranged at the outer ring of the pull rod, and the spring A spring seat is provided at the rear end of the spring. The lock box provides structural protection and housing for the entire lock tongue transmission mechanism. The lining provides a smooth contact surface between the lock tongue and the door frame to reduce friction and wear. The lock tongue, as the main component for locking and unlocking, directly interacts with the door frame to control the opening and closing of the door. The sliding groove allows the lock tongue to move smoothly during the unlocking and locking process. The limit end ensures that the lock tongue stops at the appropriate position to avoid excessive extension. The buffer pad is located at the end of the lock tongue to absorb the impact force during closing and reduce noise. The pull rod connects the lock tongue and the drive mechanism to transmit power to the lock tongue. The spring provides the necessary reset force to help the lock tongue return to its initial position after release. The spring seat fixes the spring and keeps it in the correct position to ensure the elastic effect.

[0008] Preferably, a guide sleeve is provided at the rear end of the spring seat, and a worm is provided at the end of the pull rod. The guide sleeve ensures the linear motion of the pull rod, maintains its alignment and stability, and the worm cooperates with the worm wheel to convert rotational motion into linear motion.

[0009] Preferably, a motor is provided inside the lock box, and a gear box is provided on the rear side of the motor. The motor provides a power source for the lock to drive the extension and retraction of the lock tongue. The gear box includes a gear system to transmit power from the motor to the worm.

[0010] Preferably, the motor is provided with a rotating shaft, the rotating shaft is provided with driving teeth, the rotating shaft connects the motor and the gear box to transmit rotational power, and the driving teeth cooperate with the driven teeth to ensure that the power is smoothly transmitted to the worm gear.

[0011] Preferably, a driven tooth is arranged at the left end of the driving tooth, a worm wheel is arranged coaxially with the driven tooth, and the worm wheel is engaged with the worm.

[0012] Preferably, an oil guide pipe is arranged in front of the gear box, and the other end of the oil guide pipe is arranged on the lining plate. The oil guide pipe transports lubricating oil to maintain the smooth operation of the gear system and reduce wear.

[0013] Preferably, sound insulation cotton is provided on the inner wall of the lock box, a waterproof film is provided inside the sound insulation cotton, fastening bolts are fixed on the sound insulation cotton and the waterproof film, the sound insulation cotton is attached to the inside of the lock box to effectively isolate and absorb the generated noise and keep the operation quiet, the waterproof film covers the sound insulation cotton to prevent water vapor from invading the inside of the lock and protect the internal machinery from moisture, and the fastening bolts are used to fix the sound insulation cotton and the waterproof film to ensure that they are close to the inner wall of the lock box and perform their functions.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The main advantage of the silent door lock bolt transmission mechanism lies in its efficient conversion mechanism and noise reduction characteristics. Through the cooperation of the worm gear and the worm, the rotational motion of the motor is smoothly converted into the linear motion of the bolt. This mechanism not only ensures the smoothness and accuracy of the bolt operation, but also effectively reduces the noise caused by mechanical friction. The design of the worm gear and the worm allows a larger reduction ratio, so that the motor can run at a lower speed, further reducing the sound during operation, making the door lock quieter during opening and closing;

[0016] 2. The silent door lock bolt transmission mechanism incorporates a variety of shock-absorbing and noise-reducing materials in its design, such as sound-insulating cotton and buffer pads. The sound-insulating cotton is attached to the inner wall of the lock box to effectively absorb and isolate the vibration and noise that may be generated during operation. The buffer pad is installed at the limit end of the bolt to reduce the impact sound when the bolt reaches the limit position. The application of these materials greatly enhances the user experience and makes the operation of the door lock softer and quieter.

[0017] 3. The silent door lock bolt transmission mechanism has waterproof performance, which is also an important advantage. The waterproof film covers the sound insulation cotton to prevent water and moisture from invading the interior of the lock and protect the internal precision components from corrosion or damage. This waterproof design is especially suitable for humid environments, ensuring the durability and long-term stability of the lock body, eliminating the need for users to frequently replace or maintain door locks, providing additional value and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of the lock tongue transmission mechanism of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the lock tongue transmission mechanism of the utility model;

[0020] Figure 3 This is a schematic diagram of the partial structure of the cross-section of the lock tongue transmission mechanism of the utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the lock box of the utility model.

[0022] In the figure: 1. lock box; 2. lining plate; 3. lock tongue; 4. sliding groove; 5. limit end; 6. buffer pad; 7. pull rod; 8. spring; 9. spring seat; 10. guide sleeve; 11. worm; 12. motor; 13. gear box; 14. rotating shaft; 15. driving tooth; 16. driven tooth; 17. worm wheel; 18. oil guide pipe; 19. sound insulation cotton; 20. waterproof membrane; 21. fastening bolts. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-Figure 4 The utility model provides a technical solution: a silent door lock bolt transmission mechanism, which includes a lock box 1, a lining plate 2, a lock tongue 3, a sliding groove 4, a limit end 5, a buffer pad 6, a pull rod 7, a spring 8, a spring seat 9, a guide sleeve 10, a worm 11, a motor 12, a gear box 13, a rotating shaft 14, a driving tooth 15, a driven tooth 16, a worm wheel 17, an oil guide pipe 18, sound insulation cotton 19, a waterproof membrane 20 and a fastening bolt 21. The front end of the lock box 1 is provided with a lining plate 2, the middle part of the lining plate 2 is provided with a lock tongue 3, the left and right sides of the lock tongue 3 are provided with sliding grooves 4, the rear end of the lock tongue 3 is provided with a limit end 5, the front end of the limit end 5 is provided with a buffer pad 6, the rear end of the lock tongue 3 is provided with a pull rod 7, and the outer ring of the pull rod 7 is provided with a spring. 8. A spring seat 9 is provided at the rear end of the spring 8. The lock box 1 provides structural support and protection for the entire door lock. The lining plate 2 provides a smooth contact surface between the lock body and the door to reduce wear and noise. The lock tongue 3, as the core part of the locking mechanism, is directly inserted into or withdrawn from the door frame to control the opening and closing of the door. The sliding groove 4 provides a moving path for the lock tongue to ensure its linear and smooth movement. The limit end 5 ensures that the lock tongue stops after moving to the appropriate position to avoid excessive movement. The buffer pad 6 is located at the end of the lock tongue to absorb impact and reduce noise when contacting the door frame. The pull rod 7 connects the lock tongue to the driving mechanism to transmit power to make the lock tongue move in and out. The spring 8 provides a return force for the pull rod to help the lock tongue reset to the locked position. The spring seat 9 fixes the spring to keep it in the correct position to ensure the restoring force.

[0025] A guide sleeve 10 is provided at the rear end of the spring seat 9, a worm 11 is provided at the end of the pull rod 7, a motor 12 is provided inside the lock box 1, a gear box 13 is provided on the rear side of the motor 12, a rotating shaft 14 is provided on the motor 12, a driving tooth 15 is provided on the rotating shaft 14, a driven tooth 16 is provided at the left end of the driving tooth 15, and a worm wheel 17 is provided coaxially with the driven tooth 16. The guide sleeve 10 ensures the stability and precise linear motion of the pull rod, the worm 11 converts the rotational motion into linear motion, and cooperates with the worm wheel. The motor 12 provides power for the entire lock body and drives the lock tongue to extend and retract to complete the locking and opening actions. The gear box 13 contains multiple gears for adjusting and transmitting the power of the motor. The rotating shaft 14 transmits the rotational motion of the motor to the gear box. The driving tooth 15 is meshed with the driven tooth 16 to ensure the effective transmission of power. The driven tooth 16 drives the worm wheel 17 to achieve efficient power conversion.

[0026] The worm wheel 17 is engaged with the worm 11, an oil guide pipe 18 is arranged in front of the gear box 13, and the other end of the oil guide pipe 18 is arranged on the lining plate 2. Sound insulation cotton 19 is arranged on the inner wall of the lock box 1, and a waterproof membrane 2 is arranged inside the sound insulation cotton 19. Fastening bolts 21 are fixed on the sound insulation cotton 19 and the waterproof membrane 20. The worm wheel 17 is engaged with the worm 11 to accurately control the movement of the lock tongue. The oil guide pipe 18 is used to transport lubricating oil to ensure the efficient operation of the gear system and extend the life of components. The sound insulation cotton 19 reduces the sound generated during operation and improves the user experience. The waterproof membrane 20 protects the internal mechanical components from erosion by water and moisture. The fastening bolts 21 are used to fix the sound insulation cotton and the waterproof membrane inside the lock box to ensure the stability and durability of these materials.

[0027] Working principle: The working principle and process of the entire silent door lock bolt transmission mechanism are as follows: When the motor 12 is started, the active tooth 15 on the rotating shaft 14 drives the driven tooth 16 to rotate, and the driven tooth 16 meshes with the coaxial worm wheel 17, and the worm wheel 17 is further engaged with the worm 11, converting the rotary motion of the motor into linear motion, and the worm 11 pushes the pull rod 7 to move linearly along the sliding groove 4. The springs 8 on both sides of the pull rod 7 help to provide the necessary tension and reset force during the movement of the bolt 3. At the same time, the spring seat 9 and the guide sleeve 10 ensure the stability and correct guidance of the pull rod. The bolt 3 contacts the door frame through the lining plate 2, and the limit end 5 cooperates The buffer pad 6 reduces the impact noise and prevents excessive movement when the lock tongue reaches the final position, which not only protects the mechanical structure but also extends the service life of the lock. The gear system inside the gear box 13 is lubricated by the oil guide pipe 18, and the lubricating oil can be transported from one end of the oil guide pipe to the other end, ensuring the smooth operation of the gear system and reducing friction noise. The sound insulation cotton 19 and the waterproof membrane 20 on the inner wall of the lock box are fixed by fastening bolts 21. The sound insulation cotton effectively reduces operating noise, and the waterproof membrane protects the internal mechanical components from moisture erosion. These designs together achieve the silent effect and protection function of the door lock, ensuring the efficient operation of the door lock and the good user experience.

[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A silent door lock bolt transmission mechanism, comprising a lock box (1), a lining plate (2) and a bolt (3), characterized in that: The front end of the lock box (1) is provided with a lining plate (2), the middle part of the lining plate (2) is provided with a lock tongue (3), the left and right sides of the lock tongue (3) are provided with sliding grooves (4), the rear end of the lock tongue (3) is provided with a limit end (5), the front end of the limit end (5) is provided with a buffer pad (6), the rear end of the lock tongue (3) is provided with a pull rod (7), the outer ring of the pull rod (7) is provided with a spring (8), and the rear end of the spring (8) is provided with a spring seat (9).

2. The silent door lock bolt transmission mechanism according to claim 1, characterized in that: A guide sleeve (10) is provided at the rear end of the spring seat (9), and a worm (11) is provided at the end of the pull rod (7).

3. The silent door lock bolt transmission mechanism according to claim 1, characterized in that: A motor (12) is arranged inside the lock box (1), and a gear box (13) is arranged on the rear side of the motor (12).

4. The silent door lock bolt transmission mechanism according to claim 3, characterized in that: The motor (12) is provided with a rotating shaft (14), and the rotating shaft (14) is provided with driving teeth (15).

5. The silent door lock bolt transmission mechanism according to claim 4, characterized in that: A driven tooth (16) is arranged at the left end of the driving tooth (15), a worm wheel (17) is arranged coaxially with the driven tooth (16), and the worm wheel (17) is engaged with the worm (11).

6. The silent door lock bolt transmission mechanism according to claim 3, characterized in that: An oil guide pipe (18) is arranged in front of the gear box (13), and the other end of the oil guide pipe (18) is arranged on the lining plate (2).

7. The silent door lock bolt transmission mechanism according to claim 1, characterized in that: Sound insulation cotton (19) is arranged on the inner wall of the lock box (1), a waterproof membrane (20) is arranged inside the sound insulation cotton (19), and fastening bolts (21) are fixedly arranged on the sound insulation cotton (19) and the waterproof membrane (20).

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