Stable door lock

Abstract

The utility model belongs to the technical field of door locks, and particularly relates to a stable door lock which comprises a device body, a mounting plate mounted on the device body, a door handle bearing rotationally connected to the device body, a door handle rotationally connected with the door handle bearing and a first bearing mounted in the device body. One end of the first gear is fixedly connected with the door handle, the other end of the first gear is supported on the first bearing, the second gear is in meshed transmission connection with the first gear, the switch bolt is fixedly connected with the second gear and can be rotatably plugged, and the third gear is in meshed transmission connection with the second gear; rotation of the door handle is converted into insertion and extraction motion of the bolt through the gear mechanism, operation is easy and convenient, no complex power source is needed, the bolt can be driven to be locked or released only by manually rotating the door handle, the exquisite gear transmission design is adopted, rotation of the door handle can be accurately converted into linear motion of the bolt, and the safety performance of the door handle is improved. Therefore, the door handle and the bolt move accurately and are operated accurately and reliably.

Description

Technical Field

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

[0002] Door locks are important devices to ensure door security. Traditional door locks mostly use mechanical latch structures, which require keys or other special tools to open. Although this type of door lock is easy to use, it has some shortcomings, such as keys can be easily copied, resulting in poor security, inability to remotely control the switch, and mechanical parts wear after long-term use, resulting in unsmooth insertion and removal.

[0003] In recent years, with the development of electronic technology and automation technology, some new intelligent door lock products have also appeared in the door lock field, such as electronic door locks, fingerprint door locks, remote control door locks, etc. These intelligent door locks realize intelligent functions such as automatic identification and remote unlocking through electronic components, sensors, wireless communication modules, etc., which greatly improves the safety and convenience of door locks. However, these intelligent door locks often require external power supply or battery replacement for maintenance, which is costly, and the control system is complex, the failure rate is high, and maintenance is inconvenient.

[0004] Therefore, although the existing mechanical door locks and electronic smart door locks have their own advantages and disadvantages, it is particularly necessary to develop a new door lock device that does not require an external power supply, has a simple and reliable structure, and is easy to operate, while ensuring safety and reliability. Mechanical door locks are still the mainstream product of current door locks due to their simple structure, low cost, and reliable use, but they lack new functions such as intelligent control and remote switching. Although the existing electronic smart door locks have added new functions, the complex electronic control system also brings higher costs and failure risks.

[0005] Therefore, a stable door lock is proposed in view of the above problems. Utility Model Content

[0006] In order to make up for the deficiencies of the existing technology, the problem that although the existing electronic smart door locks have added new functions, the complex electronic control system also brings higher costs and risks of failure is solved.

[0007] The technical solution adopted by the utility model to solve its technical problems is: the stable door lock described in the utility model includes a device body, a mounting plate installed on the device body, a door handle bearing rotatably connected to the device body, a door handle rotatably connected to the door handle bearing, a first bearing installed in the device body, a first gear fixedly connected to the door handle at one end and supported on the first bearing at the other end, a second gear meshingly connected to the first gear, a switch latch fixedly connected to the second gear and capable of rotational plugging and unplugging, a third gear meshingly connected to the second gear, a third transmission rod fixedly connected to the third gear at one end, and a stable latch fixedly connected to the third transmission rod at the other end and capable of plugging and unplugging and locking. The technical solution converts the rotation of the door handle into the plugging and unplugging movement of the switch latch and the stable latch through the gear transmission mechanism, thereby realizing the stable locking function of the door lock.

[0008] Preferably, the first gear is a large gear, the second gear is a small gear, and the gear ratio of the first gear to the second gear is such that when the door handle is turned, the first gear is driven to rotate, and the first gear then drives the second gear to rotate in the opposite direction. This gear ratio setting can increase the rotation angle of the door handle and make the switch pin more thoroughly inserted and removed.

[0009] Preferably, the switch latch is a hollow structure, and the second gear is installed in the inner cavity of the switch latch. When the door handle is turned, the second gear is driven to rotate, thereby driving the switch latch to be inserted and removed. This structural design enables the switch latch to be compactly connected to the gear mechanism, and the transmission is smoother.

[0010] Preferably, the third transmission rod and the third gear are synchronously connected in rotation. When the switch latch drives the second gear to rotate, the second gear further drives the third gear to rotate, thereby driving the third transmission rod to rotate, so as to stabilize the latch insertion and extraction. In this way, a single gear transmission mechanism can be used to drive the movement of two latches, and the structure is simpler and more compact.

[0011] Preferably, the mounting plate is a rectangular plate structure with a plurality of mounting holes on the plate surface for fixing the device to the door body by bolts. This plate structure enables the device to be firmly mounted on the door body, and the plate holes can adjust the mounting position, which is more applicable.

[0012] Preferably, the first gear has 10 teeth, the second gear has 10 teeth, and the first gear rotates half a circle for each rotation of the second gear, so that the switch latch is inserted and removed once for each rotation of the door handle. This precise tooth number ratio can make the door handle and latch actions correspond accurately, and the door lock operation is more accurate and reliable.

[0013] The utility model is beneficial in that:

[0014] 1. The utility model converts the rotation of the door handle into the insertion and extraction movement of the bolt through a gear mechanism. The operation is simple and convenient. No complicated power source is required. The bolt can be locked or released by manually rotating the door handle. At the same time, the structure can enlarge the rotation angle of the door handle to ensure that the bolt is inserted and extracted thoroughly, thereby improving the reliability of the door lock. In addition, the entire device has a compact structure, occupies a small space, is easy to install and maintain, and can be applied to various types of door bodies, with a wide range of applications;

[0015] 2. The sophisticated gear transmission design can accurately convert the rotation of the door handle into the linear movement of the bolt, so that the movement of the door handle and the bolt is precisely corresponding, and the operation is accurate and reliable. The special meshing method of the first and second gears can magnify the turning angle of the door handle, so that the bolt can be fully inserted or pulled out, avoiding the problem of failure caused by half-insertion. The hollow switch bolt is compactly connected to the gear component, and the transmission is efficient and smooth. In short, the door lock has a reasonable structure, precise transmission, reliable operation, and easy installation. It is an effective technical solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model as a whole viewed from the front;

[0018] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model from the rear;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the internal structure of the utility model;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the internal structure of the utility model from the side.

[0021] In the figure: 1. device body; 2. mounting plate; 3. door handle bearing; 4. door handle; 5. first bearing; 6. first gear; 7. second gear; 8. switch latch; 9. third gear; 10. third transmission rod; 11. stabilizing latch. DETAILED DESCRIPTION

[0022] 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 of 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.

[0023] Example

[0024] See also Figures 1 to 4 As shown, a stable door lock comprises a device body 1, a mounting plate 2 mounted on the device body 1, a door handle bearing 3 rotatably connected to the device body 1, a door handle 4 rotatably connected to the door handle bearing 3, a first bearing 5 mounted in the device body 1, a first gear 6 fixedly connected to the door handle 4 at one end and supported on the first bearing 5 at the other end, a second gear 7 meshingly connected to the first gear 6, a switch latch 8 fixedly connected to the second gear 7 and capable of rotational plugging and unplugging, a third gear 9 meshingly connected to the second gear 7, a third transmission rod 10 fixedly connected to the third gear 9 at one end, and a stable latch 11 fixedly connected to the third transmission rod 10 and capable of plugging and unplugging and locking at the other end. When the door handle 4 is manually rotated, the first gear 6 fixedly connected to the door handle 4 also rotates, and the first gear 6 meshes with the second gear 7, causing the second gear 7 to rotate in the opposite direction.

[0025] The first gear 6 is a large gear, the second gear 7 is a small gear, and the gear ratio of the first gear 6 to the second gear 7 is 2:1, so that when the door handle 4 is rotated, the first gear 6 is driven to rotate, and the first gear 6 then drives the second gear 7 to rotate in the opposite direction. This gear ratio design makes the rotation angle of the second gear 7 twice that of the first gear 6, thereby enlarging the rotation angle of the door handle 4 and ensuring that the switch latch 8 can be fully inserted or removed.

[0026] The switch latch 8 is a hollow structure, and the second gear 7 is installed in the inner cavity of the switch latch 8. When the door handle 4 rotates, the second gear 7 is driven to rotate, thereby driving the switch latch 8 to be plugged in and out. The direct connection between the switch latch 8 and the second gear 7 makes the transmission smoother and more efficient, and avoids energy loss caused by additional indirect connection.

[0027] The third transmission rod 10 and the third gear 9 are connected for synchronous rotation. When the switch latch 8 drives the second gear 7 to rotate, the second gear 7 further drives the third gear 9 to rotate, thereby driving the third transmission rod 10 to rotate, so that the stabilizing latch 11 can be inserted or removed. Through the gear meshing transmission, the rotation of the third transmission rod 10 and the second gear 7 is completely synchronized, thereby realizing the synchronous insertion and removal of the stabilizing latch 11 and the switch latch 8.

[0028] The mounting plate 2 is a rectangular plate structure with a plurality of mounting holes on the plate surface for fixing the device to the door body by bolts. The design of the mounting plate 2 enables the device to be firmly mounted on various door bodies, and the mounting position can also be adjusted by adjusting the bolt holes, and has a wide range of applications.

[0029] The number of teeth of the first gear 6 is 24, and the number of teeth of the second gear 7 is 12. When the second gear 7 rotates one circle, the first gear 6 rotates half a circle, so that when the door handle 4 rotates one circle, the switch latch 8 is inserted and removed once. This precise gear meshing ratio design makes the movement of the door handle 4 and the latch correspond precisely, and one rotation can complete one insertion and removal locking, which is simple and reliable to operate.

[0030] Working principle: First, when unlocking is required, the user manually turns the door handle 4, and the first gear 6 fixedly connected to the door handle 4 also rotates accordingly. Since the first gear 6 is a large gear, the second gear 7 is a small gear, and the gear ratio is 2:1, the second gear 7 will rotate in the opposite direction, and the rotation angle is twice that of the first gear 6. The rotation of the second gear 7 drives the hollow switch latch 8 fixedly connected thereto to perform plug-in and pull-out movements. At the same time, the second gear 7 is meshed with the third gear 9, so the rotation of the second gear 7 will also drive the third gear 9 to rotate. The third gear 9 is fixedly connected to the third transmission rod 10, so the third transmission rod 10 will also rotate accordingly. One end of the third transmission rod 10 is fixedly connected to the stabilizing latch 11, so the rotation of the third transmission rod 10 will drive the stabilizing latch 11 to perform plug-in and pull-out movements. Due to the meshing transmission of the second gear 7 and the third gear 9, the plug-in and pull-out movements of the switch latch 8 and the stabilizing latch 11 are synchronized.

[0031] Finally, when the door handle 4 rotates one circle, since the first gear 6 has 24 teeth and the second gear 7 has 12 teeth, the second gear 7 rotates one circle and the first gear 6 rotates half a circle, thereby driving the switch latch 8 and the stable latch 11 to complete a complete plug-in and pull-out locking action. This precise gear meshing ratio design ensures that the door handle and the latch movement are precisely corresponding and the operation is reliable. The device accurately converts the manually rotated door handle movement into the plug-in and pull-out locking movement of the latch through a sophisticated gear transmission mechanism, amplifies the operating torque, and has reliable and efficient operation. It does not require an external power source and is easy to install and maintain. It is a practical new solution for door lock stability control.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A stable door lock, characterized in that: The invention comprises a device body (1), a mounting plate (2) mounted on the device body (1), a door handle bearing (3) rotatably connected to the device body (1), a door handle (4) rotatably connected to the door handle bearing (3), a first bearing (5) mounted in the device body (1), a first gear (6) having one end fixedly connected to the door handle (4) and the other end supported on the first bearing (5), a second gear (7) meshingly connected to the first gear (6), a switch pin (8) fixedly connected to the second gear (7) and capable of being rotatably plugged in and pulled out, a third gear (9) meshingly connected to the second gear (7), a third transmission rod (10) having one end fixedly connected to the third gear (9), and a stabilizing pin (11) having the other end fixedly connected to the third transmission rod (10) and capable of being plugged in and pulled out for locking.

2. A stable door lock according to claim 1, characterized in that: The first gear (6) is a large gear, the second gear (7) is a small gear, and the gear ratio between the first gear (6) and the second gear (7) is 2:1, so that when the door handle (4) is rotated, the first gear (6) is driven to rotate, and the first gear (6) then drives the second gear (7) to rotate in the opposite direction.

3. A stable door lock according to claim 1, characterized in that: The switch latch (8) is a hollow structure, and the second gear (7) is installed in the inner cavity of the switch latch (8). When the door handle (4) rotates, the second gear (7) is driven to rotate, thereby driving the switch latch (8) to be inserted or removed.

4. A stable door lock according to claim 1, characterized in that: The third transmission rod (10) and the third gear (9) are connected to rotate synchronously. When the switch latch (8) drives the second gear (7) to rotate, the second gear (7) further drives the third gear (9) to rotate, thereby driving the third transmission rod (10) to rotate, so that the stabilizing latch (11) is inserted or removed.

5. A stable door lock according to claim 1, characterized in that: The mounting plate (2) is a rectangular plate structure with a plurality of mounting holes on the plate surface for fixing the device to the door body via bolts.

6. A stable door lock according to claim 2, characterized in that: The number of teeth of the first gear (6) is 24, the number of teeth of the second gear (7) is 12, and the first gear (6) rotates half a circle for each rotation of the second gear (7), so that the switch latch (8) is inserted and removed once for each rotation of the door handle (4).

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