Silent Lock Body

Abstract

This invention discloses a silent lock body, characterized by a latch and a main lock plate inside the lock shell. A first magnet is installed at the end of the latch, and a lock hole is provided on the door frame. A second magnet is installed in the lock hole. The latch moves under the magnetic force of the first and second magnets to insert into the lock hole. Two symmetrically arranged compensating members are provided on the main lock plate. When unlocking by handle or key, the handle or key drives the upper slide plate to rotate. The third end of the upper slide plate can push the clutch plate to rotate and disengage it from the protrusion. The advantage is that the latch moves by the magnetic force of the magnets, so the latch will not rub against the door frame to generate noise, achieving a silent effect. At the same time, it can also prevent the paint surface of the door frame from being scratched by the latch. After the latch is inserted into the lock hole, the compensating members can be pressed tightly against the inner wall of the lock hole under the action of the spring. The latch can adapt to lock holes of different sizes, with better adaptability and greater convenience in practical applications. In the event of motor failure, the lock can still be unlocked by key or handle.

Description

Technical Field

[0001] This invention relates to a lock, and more particularly to a silent lock body. Background Technology

[0002] The lock body is one of the components of a lock, and it is generally used on security doors. It is responsible for the basic anti-theft work of the security door and plays an important role in theft prevention.

[0003] An electric door lock typically includes a lock shell, on which a bolt, a linkage mechanism, and a motor are installed. The motor drives the bolt to extend and retract through the linkage mechanism, thereby enabling the door to open and close.

[0004] The existing door lock structure has the following defects:

[0005] 1. Every time the door is closed, the latch rubs against the door frame, causing noise. Furthermore, the friction between the latch and the door frame will scratch the frame, affecting its appearance.

[0006] 2. The size of the latch and the keyhole are generally matched. After the latch is inserted into the keyhole, it can ensure that the door panel will not shake inside the door frame. Therefore, during the door production stage, the door frame needs to be manufactured according to the size of the latch and the keyhole to match it. This results in a complex product structure. Different keyholes need to be processed according to different locks. Furthermore, if the lock is damaged and needs to be replaced later, the latch may be too small. If the size of the latch is smaller than the keyhole, the door will shake inside the door panel, which poses a safety hazard.

[0007] 3. The rack on the motor is connected to the transmission structure inside the lock body. If the motor malfunctions after locking, the rack cannot move due to the motor's limitation, and the internal transmission structure cannot operate. People will then be unable to unlock the lock body with a key or handle and will have to resort to force to break down the door, which is very inconvenient. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a silent lock body.

[0009] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a silent lock body, including a lock shell disposed in the door panel, a latch and a main lock plate disposed in the lock shell, both the latch and the main lock plate can move in the lock shell along the x-axis direction of the lock shell, and both the latch and the main lock plate can extend out of the lock shell;

[0010] A lever fork, with a handle inserted into it to drive the lever fork to rotate along its own axis, and an upper lever and a connecting rod fitted on the lever fork, the first end of the upper lever fork being able to move the oblique tongue;

[0011] Lock cylinder lever, the key is inserted into the lock cylinder lever to drive the lock cylinder lever to rotate along its own axis;

[0012] The upper and lower slide plates are rotatably connected inside the lock housing and are coaxially arranged. The lock cylinder lever can push the upper slide plate to rotate. The first end of the upper slide plate is connected to the second end of the upper lever. The first end of the lower slide plate is connected to the main lock tongue and can drive the main lock tongue to move. The first end of the lower slide plate is also engaged with the second end of the upper slide plate.

[0013] The rear push rod has a first end rotatably connected to the connecting rod and a second end rotatably connected to the second end of the lower slide plate.

[0014] A clutch plate, the first end of which is rotatably connected to a connecting rod and coaxially arranged with a rear push rod, and a tension spring is provided between the second end of the clutch plate and the second end of the rear push rod;

[0015] The rack is movable within the lock housing along the y-axis. The rack is provided with a pushing part and a protrusion. The rack can push the upper slide plate to rotate through the pushing part, and the rack can push the clutch plate to move through the protrusion.

[0016] The motor is used to drive the rack to move within the lock housing;

[0017] The end of the latch is provided with a first magnet, and a lock hole is provided on the door frame. A second magnet is provided in the lock hole. When the door panel is closed on the door frame, the latch corresponds to the second magnet. The second magnet drives the first magnet to move under the action of magnetic force. The movement of the first magnet drives the latch to extend from the lock shell and insert into the lock hole.

[0018] The lock housing is equipped with a sensor switch. When the latch is in the unlocked state, the latch retracts into the lock housing and the inner end of the latch abuts against the sensor switch. The sensor switch sends an unlocking signal to the motor. When the latch is in the locked state, the latch extends out of the lock housing and disengages from the sensor switch. The sensor switch sends a locking signal to the motor.

[0019] The main lock plate is provided with two symmetrically arranged compensating members. The front end of the compensating member is rotatably connected to the main lock plate, and the rear end of the compensating member is engaged with the main lock plate. A spring is provided between the two compensating members. The spring always provides the two compensating members with an outward rotational force. When the lock tongue is in the unlocked state, the two compensating members extend from both sides of the main lock plate. When the lock tongue is inserted into the lock hole, the inner wall of the lock hole pushes the compensating members to rotate.

[0020] When the lock body is in the locked state, the step rests against the clutch plate. When it is necessary to unlock by the handle or key, the handle and key drive the upper slide plate to rotate. The third end of the upper slide plate can push the clutch plate to rotate and disengage it from the protrusion.

[0021] A further preferred embodiment of the present invention is that when the latch is inserted into the keyhole, a gap is left between the first magnet and the second magnet.

[0022] A further preferred embodiment of the present invention is as follows: the end of the latch is provided with a mounting groove, the first magnet is disposed in the mounting groove, and when the first magnet is disposed in the mounting groove, the outer surface of the first magnet is flush with the end face of the latch.

[0023] A further preferred embodiment of the present invention is that the front end of the compensation member is bent and extended to provide a rotating part, and the rotating part is rotatably engaged with the insert plate.

[0024] A further preferred embodiment of the present invention is that the rear end of the compensation component is provided with a hook, which engages with the main locking plate.

[0025] A further preferred embodiment of the present invention is that the front end of the compensation component is provided with a guide arc surface.

[0026] A further preferred embodiment of the present invention is as follows: a push plate is rotatably connected to the lock body, the third end of the upper slide plate pushes the push plate to rotate, and the rotation of the push plate pushes the clutch plate to rotate.

[0027] A further preferred embodiment of the present invention is as follows: an upper push rod is provided between the upper paddle and the upper slide plate, the lock cylinder paddle can push the upper push rod to move, the first end of the upper push rod is rotatably connected to the upper slide plate, the second end of the upper push rod is provided with a pin, the upper paddle is provided with an assembly groove, and the pin is inserted into the assembly groove and can move within the assembly groove.

[0028] A further preferred embodiment of the present invention is as follows: a connecting post is provided in the lock body, the upper sliding plate and the lower sliding plate are rotatably connected to the connecting post, a guide groove is provided on the main lock plate, and the connecting post is located in the guide groove.

[0029] A further preferred embodiment of the present invention is: a pushing column is provided on the third end of the upper sliding plate, and the pushing part pushes the pushing column to drive the upper sliding plate to rotate.

[0030] Compared with the prior art, the advantages of this invention are: 1. The lock tongue moves by the magnetic force of the magnet, so the lock tongue will not rub against the door frame and generate noise, achieving a silent effect, and at the same time, it can also prevent the paint surface of the door frame from being scratched by the lock tongue; 2. After the lock tongue is inserted into the key hole, the compensation component can be tightly attached to the inner wall of the key hole under the action of the spring, and the lock tongue can adapt to key holes of different sizes, with better adaptability and greater convenience in practical applications; 3. When unlocking by the handle or key, the handle and key drive the upper slide plate to rotate, and the third end of the upper slide plate can push the clutch plate to rotate and disengage it from the protrusion, that is, to disengage the clutch plate from the rack, so that the entire transmission structure is disconnected from the motor connection, allowing the transmission structure to continue to operate. In the event of a motor failure, the lock can still be unlocked by the key or handle. Attached Figure Description

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0032] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention in the unlocked state;

[0033] Figure 2 This is a schematic diagram of a preferred embodiment of the present invention in the locked state;

[0034] Figure 3 This is a partial structural diagram of a preferred embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the upper paddle, upper push rod, and upper slide plate in a preferred embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the clutch plate after disengagement in a preferred embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the upper sliding plate in a preferred embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the inclined tongue inserted into the keyhole in a preferred embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the oblique tongue in a preferred embodiment of the present invention;

[0040] Figure 9 for Figure 8 Exploded view;

[0041] Figure 10 This is a schematic diagram of the main locking plate according to a preferred embodiment of the present invention;

[0042] Figure 11 for Figure 10 Exploded view;

[0043] Figure 12 This is a schematic diagram of the compensation component in a preferred embodiment of the present invention.

[0044] In the diagram: 1. Door frame; 11. Door panel; 12. Lock hole; 121. Second magnet; 2. Lock case; 21. Latch; 211. Limiting plate; 212. Guide block; 213. First magnet; 214. Mounting groove; 22. Main lock plate; 221. Rotating groove; 222. Compensating component; 223. Spring; 224. Rotating part; 225. Hook; 226. Guide arc surface; 23. Guide groove; 24. Lock cylinder 25. Toggle block; 3. Inductive switch; 41. Toggle fork; 31. Upper toggle plate; 311. Assembly slot; 32. Connecting rod; 41. Upper slide plate; 411. Snap-fit ​​part; 412. Push post; 42. Lower slide plate; 421. Pin; 43. Upper push rod; 431. Pin shaft; 44. Rear push rod; 45. Clutch plate; 46. Push plate; 47. Tension spring; 5. Rack; 51. Click; 52. Push part; 53. Protrusion. Detailed Implementation

[0045] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of the invention.

[0046] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0047] The door includes a door frame 1 and a door panel 11. The door panel 11 is hinged to the door frame 1. A lock body is provided inside the door panel 11. A lock hole 12 corresponding to the lock body is provided on the door frame 1.

[0048] This embodiment mainly describes the structure of the lock body, as follows:

[0049] The lock body is a silent lock shell 2. The lock shell 2 is provided with a bolt 21 and a main lock plate 22. Both the bolt 21 and the main lock plate 22 can move along the x-axis of the lock shell 2 within the lock shell 2, and both the bolt 21 and the main lock plate 22 can extend out of the lock shell 2.

[0050] A fork 3 is provided inside the lock housing 2. The handle is inserted into the fork 3. Rotating the handle causes the fork 3 to rotate within the lock housing 2 along its own axis.

[0051] The shift fork 3 is fitted with an upper shift plate 31 and a connecting rod 32. When the shift fork 3 rotates, it can drive the upper shift plate 31 and the connecting rod 32 to rotate. The first end of the upper shift plate 31 can drive the oblique tongue 21 to move. Furthermore, a limit plate 211 is provided on the oblique tongue 21. The first end of the upper shift plate 31 abuts against the limit plate 211. The first end of the upper shift plate 31 pushes the limit plate 211 to move, thereby driving the oblique tongue 21 to move.

[0052] The limiting plate 211 is provided with a guide block 212, and the lock housing 2 is provided with a guide groove 23. The guide block 212 is located in the guide groove 23 and is restricted to move within the guide groove 23, so that the tongue 21 moves more stably within the lock housing 2.

[0053] The lock housing 2 is equipped with a lock cylinder lever 24. When the key is inserted into the lock cylinder lever 24, it drives the lock cylinder lever 24 to rotate along its own axis.

[0054] A first magnet 213 is provided on the end face of the oblique tongue 21. Furthermore, an installation groove 214 is provided on the oblique tongue 21, and the first magnet 213 is disposed in the installation groove 214.

[0055] When the first magnet 213 is placed in the mounting groove 214, the outer surface of the first magnet 213 is flush with the end face of the oblique tongue 21.

[0056] Preferably, the cross-section of the first magnet 213 is the same as the shape of the mounting groove 214, so that the first magnet 213 is more securely installed in the mounting groove 214.

[0057] A second magnet 121 is provided inside the keyhole 12, and the second magnet 121 is magnetically attracted to the first magnet 213.

[0058] When the door panel 11 is in the open state on the door frame 1, the bolt 21 is located inside the lock housing 2, and the lock body is in the open state.

[0059] When the door panel 11 is closed on the door frame 1, the latch 21 corresponds to the second magnet 121. Under the action of magnetic force, the second magnet 121 drives the first magnet 213 to move. The movement of the first magnet 213 drives the latch 21 to extend out of the lock shell 2 and insert into the lock hole 12. At this time, the lock body is in the locked state.

[0060] When the latch 21 is inserted into the lock hole 12, a gap is left between the first magnet 213 and the second magnet 121 to prevent the first magnet 213 and the second magnet 121 from colliding with each other and generating noise.

[0061] When the door needs to be opened, the key or handle drives the upper lever 31 to rotate. After the upper lever 31 rotates, it drives the latch 21 to move and retract the latch 21 into the lock case 2, and the door can be opened.

[0062] The lock housing 2 is provided with an upper slide plate 41 and a lower slide plate 42. The upper slide plate 41 and the lower slide plate 42 are rotatably connected in the lock housing 2 and are coaxially arranged. The lock cylinder lever 24 can push the upper slide plate 41 to rotate. The first end of the upper slide plate 41 is connected to the second end of the upper lever 31. The first end of the lower slide plate 42 is connected to the main lock tongue 22 and can drive the main lock tongue 22 to move. The first end of the lower slide plate 42 is also engaged with the second end of the upper slide plate 41.

[0063] Furthermore, an upper push rod 43 is provided between the upper slide plate 41 and the upper lever 31. The lock cylinder lever 24 can push the upper push rod 43 to move, and the lock cylinder lever 24 can drive the upper slide plate 41 and the upper lever 31 to rotate simultaneously through the upper push rod 43.

[0064] The first end of the upper push rod 43 is rotatably connected to the upper slide plate 41, and the second end of the upper push rod 43 is provided with a pin 431. The upper paddle 31 is provided with an assembly groove 311, and the pin 431 is inserted into the assembly groove 311 and can move within the assembly groove 311.

[0065] The main locking plate 22 has a rotating groove 221, and the first end of the lower sliding plate 42 is provided with a pin 421. The pin 421 is inserted into the rotating groove 221 and can move within the rotating groove 221.

[0066] The second end of the upper slide plate 41 is engaged with the pin 421. Furthermore, the second end of the upper slide plate 41 is provided with a locking part 411, and the pin 421 is engaged with the locking part 411. When the upper slide plate 41 rotates, the upper slide plate 41 can drive the lower slide plate 42 to rotate.

[0067] The lock housing 2 is provided with a rear push rod 44. The first end of the rear push rod 44 is rotatably connected to the connecting rod 32, and the second end of the rear push rod 44 is rotatably connected to the second end of the lower slide plate 42.

[0068] The second end of the lower slide plate 42 is rotatably connected to the second end of the rear push rod 44. When the lower slide plate 42 rotates, it can drive the rear push rod 44 to move, and the rear push rod 44 can drive the connecting rod 32 to rotate. The connecting rod 32 drives the upper lever 31 to rotate through the shift fork 3. Similarly, when the shift fork 3 rotates, it drives the connecting rod 32 to rotate, and the connecting rod 32 drives the rear push rod 44 to move, and the rear push rod 44 drives the lower slide plate 42 to rotate.

[0069] The lock housing 2 is provided with a clutch plate 45. The first end of the clutch plate 45 is rotatably connected to the connecting rod 32 and is coaxially arranged with the rear push rod 44.

[0070] The third end of the upper slide plate 41 can push the clutch plate 45 to rotate. Furthermore, a push plate 46 is provided inside the lock housing 2. The third end of the upper slide plate 41 pushes the push plate 46 to rotate, and after the push plate 46 rotates, it pushes the clutch plate 45 to rotate.

[0071] A rack 5 is provided inside the lock housing 2. The rack 5 can move along the y-axis of the lock housing 2. A motor 51 is also provided inside the lock housing 2. The motor 51 drives the rack 5 to move.

[0072] The rack 5 is provided with a pushing part 52 and a protrusion 53.

[0073] The rack 5 can push the upper slide plate 41 to rotate through the pushing part 52. Furthermore, a pushing column 412 is provided on the third end of the upper slide plate 41. The pushing part 52 pushes the pushing column 412 to drive the upper slide plate 41 to rotate.

[0074] The rack 5 can push the clutch plate 45 to move through the protrusion 53. When the rack 5 moves, the protrusion 53 abuts against the clutch plate 45 and pushes the clutch plate 45 to move.

[0075] A tension spring 47 is provided between the second end of the clutch plate 45 and the second end of the rear push rod 44. The tension spring 47 always applies a force to the clutch plate 45 to press against the rack 5.

[0076] When the lock is engaged by motor 51, motor 51 drives rack 5 to move upward. The protrusion 53 on rack 5 abuts against clutch plate 45. As rack 5 continues to move, it pushes clutch plate 45 upward. The movement of clutch plate 45 drives push rod 44 to move. Push rod 44 drives lower slide plate 42 to rotate. The rotation of lower slide plate 42 drives main lock plate 22 to move, causing it to extend out of lock housing 2. At the same time, clutch plate 45 also drives connecting rod 32 to rotate. The rotation of connecting rod 32 drives shift fork 3 to rotate. The rotation of shift fork 3 drives upper shift plate 31 to rotate. Upper shift plate 31 drives tongue 21 to move out of lock housing 2, thus achieving locking.

[0077] When the lock is unlocked by motor 51, motor 51 drives rack 5 to move downward. The pushing part 52 on rack 5 pushes pushing column 412, causing it to drive upper slide plate 41 to rotate. After upper slide plate 41 rotates, it pushes lower slide plate 42 to rotate. Lower slide plate 42 drives main lock plate 22 to move, causing it to retract into lock housing 2. At the same time, upper slide plate 41 drives upper lever 31 to rotate via upper push rod 43. Upper lever 31 drives oblique tongue 21 to move, causing it to retract into lock housing 2. Lower slide plate 42 also drives rear push rod 44 to move. Rear push rod 44 drives clutch plate 45 to move to its original position.

[0078] When the motor 51 malfunctions and the lock needs to be opened by key or handle, turn the handle. The handle drives the shift fork 3 to rotate, which in turn drives the upper shift plate 31 to rotate a short distance. At this time, the upper shift plate 31 drives the upper slide plate 41 to rotate via the upper push rod 43. After the upper slide plate 41 rotates, it pushes the push plate 46 to rotate. The push plate 46 pushes the clutch plate 45 to rotate, causing the clutch plate 45 to disengage from the protrusion 53. After the upper slide plate 41 rotates, it drives the lower slide plate 42 to rotate. The lower slide plate 42 drives the rear push rod 44 to move, which in turn drives the clutch plate 45 to move. Since there is no protrusion 53 to restrict it, the clutch plate 45 moves downward over the protrusion 53. The upper shift plate 31 continues to rotate, driving the latch 21 to move and retract it into the lock housing 2. At the same time, the lower slide plate 42 also drives the main lock plate 22 to move and retract into the lock housing 2.

[0079] When the key is used to unlock, the key is inserted into the lock cylinder lever 24. Turning the key causes the lock cylinder lever 24 to rotate, which in turn pushes the upper push rod 43, causing it to move. The movement of the upper push rod 43 simultaneously causes the upper lever 31 and the upper slide plate 41 to rotate. After the upper slide plate 41 rotates, it pushes the push plate 46 to rotate, which in turn pushes the clutch plate 45 to rotate, causing the clutch plate 45 to disengage from the protrusion 53. The upper slide plate 41 can then continue to rotate, causing the lower slide plate 42 to rotate. The lower slide plate 42 causes the rear push rod 44 to move, which in turn causes the clutch plate 45 to move. Since there is no protrusion 53 to restrict its movement, the clutch plate 45 moves downwards past the protrusion 53. The upper lever 31 continues to rotate, causing the latch 21 to move and retract into the lock housing 2. At the same time, the lower slide plate 42 also causes the main lock plate 22 to move and retract into the lock housing 2.

[0080] A sensor switch 25 is installed inside the lock housing 2. The sensor switch 25 is electrically connected to the motor 51. When the latch 21 is in the unlocked state, the latch 21 retracts into the lock housing 2 and the inner end of the latch 21 abuts against the sensor switch 25. The sensor switch 25 sends an unlocking signal to the motor 51. When the latch 21 is in the locked state, the latch 21 extends out of the lock housing 2 and disengages from the sensor switch 25. The sensor switch 25 sends a locking signal to the motor 51.

[0081] The main locking plate 22 is provided with two symmetrically arranged compensation members 222. The front end of the compensation member 222 is rotatably connected to the main locking plate 22, and the rear end of the compensation member 222 is engaged with the main locking plate 22. A spring 223 is provided between the two compensation members 222, and the spring 223 always provides the two compensation members 222 with an outward rotational force.

[0082] The front end of the compensation component 222 is provided with a rotating part 224, which is rotatably connected to the main locking plate 22. The rear end of the compensation component 222 is provided with a hook part 225, which passes over the main locking plate 22 and hooks onto the other side of the main locking plate 22. The hook part 225 hooks onto the main locking plate 22 to restrict the rotation of the compensation component 222.

[0083] The front end of the compensation component 22 is provided with a guide arc surface 226, which facilitates the insertion of the compensation component 22 into the lock hole 12 during the process of inserting the main lock plate 22 into the lock hole 12, making the insertion into the lock hole 12 smoother.

[0084] When the main lock plate 22 is in the unlocked state, the two compensating members 222 extend from both sides of the main lock plate 22. When the main lock plate 22 is inserted into the lock hole 12, the inner wall of the lock hole 12 pushes the compensating members 222 to rotate.

[0085] like Figure 1 As shown, the lock body is in the unlocked state, with the bolt 21 and the main bolt 22 retracted into the lock case 2.

[0086] When the door is closed, the rotating door panel 11 and the door frame 1 are in a closed state. When the latch 21 is aligned with the lock hole 12, the second magnet 121 attracts the first magnet 213 to move under the action of magnetic force. The first magnet 213 drives the latch 21 to move so that it extends out of the lock housing 2, and the latch 21 is inserted into the lock hole 12. The latch 21 disengages from the induction switch 25. The induction switch 25 sends a locking signal to the motor 51. The motor 51 drives the rack 5 to start moving. The rack 5 moves down and pushes the upper slide plate 41 to rotate. The rotation of the upper slide plate 41 drives the lower slide plate 42 to rotate. The lower slide plate 42 drives the main lock plate 22 to move, so that the main lock plate 22 extends out of the lock housing 2, and the locking is completed.

[0087] When the door needs to be opened, a password or fingerprint is entered. After the lock body confirms the information, the motor 51 controls the latch 21 to retract into the lock housing 2. At the same time, the motor 51 drives the rack 5 to move. The rack 5 moves upward and pushes the clutch plate 45 to move upward. The movement of the clutch plate 45 drives the connecting rod 32 to rotate on the fork 3. At the same time, it also drives the rear push rod 44 to move. The rear push rod 44 drives the lower slide plate 42 to rotate. The lower slide plate 42 drives the main lock plate 22 to move, so that the main lock plate 22 retracts into the lock housing 2, completing the unlocking.

[0088] In the description of this invention, it should be noted that the terms "upper," "lower," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0089] The silent lock body provided by this invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand this invention and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to this invention without departing from the principles of this invention, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A silent lock body, characterized in that: Includes a lock housing located inside the door panel, with a latch and a main lock plate inside the lock housing. Both the latch and the main lock plate can move within the lock housing along the x-axis direction, and both the latch and the main lock plate can extend out of the lock housing. A lever fork, with a handle inserted into it to drive the lever fork to rotate along its own axis, and an upper lever and a connecting rod fitted on the lever fork, the first end of the upper lever fork being able to move the oblique tongue; Lock cylinder lever, the key is inserted into the lock cylinder lever to drive the lock cylinder lever to rotate along its own axis; The upper and lower slide plates are rotatably connected inside the lock housing and are coaxially arranged. The lock cylinder lever can push the upper slide plate to rotate. The first end of the upper slide plate is connected to the second end of the upper lever. The first end of the lower slide plate is connected to the main lock tongue and can drive the main lock tongue to move. The first end of the lower slide plate is also engaged with the second end of the upper slide plate. The rear push rod has a first end rotatably connected to the connecting rod and a second end rotatably connected to the second end of the lower slide plate. A clutch plate, the first end of which is rotatably connected to a connecting rod and coaxially arranged with a rear push rod, and a tension spring is provided between the second end of the clutch plate and the second end of the rear push rod; The rack is movable within the lock housing along the y-axis. The rack is provided with a pushing part and a protrusion. The rack can push the upper slide plate to rotate through the pushing part, and the rack can push the clutch plate to move through the protrusion. The motor is used to drive the rack to move within the lock housing; The end of the latch is provided with a first magnet, and a lock hole is provided on the door frame. A second magnet is provided in the lock hole. When the door panel is closed on the door frame, the latch corresponds to the second magnet. The second magnet drives the first magnet to move under the action of magnetic force. The movement of the first magnet drives the latch to extend from the lock shell and insert into the lock hole. The lock housing is equipped with a sensor switch. When the latch is in the unlocked state, the latch retracts into the lock housing and the inner end of the latch abuts against the sensor switch. The sensor switch sends an unlocking signal to the motor. When the latch is in the locked state, the latch extends out of the lock housing and disengages from the sensor switch. The sensor switch sends a locking signal to the motor. The main lock plate is provided with two symmetrically arranged compensating members. The front end of the compensating member is rotatably connected to the main lock plate, and the rear end of the compensating member is engaged with the main lock plate. A spring is provided between the two compensating members. The spring always provides the two compensating members with an outward rotational force. When the lock tongue is in the unlocked state, the two compensating members extend from both sides of the main lock plate. When the lock tongue is inserted into the lock hole, the inner wall of the lock hole pushes the compensating members to rotate. When the lock body is locked, the step rests against the clutch plate. When it is necessary to unlock the lock by the handle or key, the handle and key drive the upper slide plate to rotate. The third end of the upper slide plate can push the clutch plate to rotate and disengage it from the protrusion.

2. The silent lock body according to claim 1, characterized in that: When the latch is inserted into the keyhole, there is a gap between the first magnet and the second magnet.

3. The silent lock body according to claim 1, characterized in that: The end of the latch is provided with a mounting groove, and the first magnet is placed in the mounting groove. When the first magnet is placed in the mounting groove, the outer surface of the first magnet is flush with the end face of the latch.

4. The silent lock body according to claim 1, characterized in that: The front end of the compensation component is bent and extended to provide a rotating part, which is rotatably engaged with the insert plate.

5. The silent lock body according to claim 1, characterized in that: The rear end of the compensation component is provided with a hook, which engages with the main locking plate.

6. The silent lock body according to claim 1, characterized in that: The front end of the compensation component is provided with a guide arc surface.

7. The silent lock body according to claim 1, characterized in that: A push plate is rotatably connected inside the lock body. The third end of the upper slide plate pushes the push plate to rotate, and the rotation of the push plate pushes the clutch plate to rotate.

8. The silent lock body according to claim 1, characterized in that: An upper push rod is provided between the upper lever and the upper slide plate. The lock cylinder lever can push the upper push rod to move. The first end of the upper push rod is rotatably connected to the upper slide plate. The second end of the upper push rod is provided with a pin. An assembly groove is opened on the upper lever. The pin is inserted into the assembly groove and can move within the assembly groove.

9. The silent lock body according to claim 1, characterized in that: The lock body is provided with a connecting post, the upper sliding plate and the lower sliding plate are rotatably connected to the connecting post, the main lock plate is provided with a guide groove, and the connecting post is located in the guide groove.

10. The silent lock body according to claim 1, characterized in that: A pushing column is provided on the third end of the upper slide plate, and the pushing part pushes the pushing column to drive the upper slide plate to rotate.

Images