Double-transmission mechanism of multi-point door lock and spring bolt door lock

Abstract

The invention discloses a double-transmission mechanism of a multi-point door lock and a spring bolt door lock. A main transmission plate is arranged at the rear end of a push block, and an auxiliary transmission plate is arranged at the front end of the push block; two ends of the main transmission plate are respectively connected with the right transmission rod and the left transmission rod; the right transmission rod and the left transmission rod are respectively connected with the multi-point lock; the main transmission plate is further provided with a main transmission plate convex rib, and the handle pusher dog main transmission plate driving deflector rod corresponds to the main transmission plate convex rib; an auxiliary transmission plate hooking edge is arranged at the other end of the auxiliary transmission plate and hooks a spring bolt pusher dog driving column on a spring bolt pusher dog; the handle pusher dog and the spring bolt pusher dog are coaxially and rotationally connected to the bottom box. A handle pusher dog main transmission plate driving deflector rod and a handle pusher dog spring bolt driving protruding block are arranged on the outer circle of a center hole of the handle pusher dog, and the handle pusher dog spring bolt driving protruding block is embedded into a spring bolt pusher dog idle stroke groove of the spring bolt pusher dog. The anti-prying lock has the advantages that the anti-prying lock is provided with double anti-prying mechanisms and double locking systems and is safe and reliable.

Description

Technical Field

[0001] The present invention relates to the field of building hardware, specifically to a lock, and more specifically to an anti-prying door lock structure with a dual drive system, which is applicable to high-security level places such as residences and public buildings. Background Art

[0002] Locks are essential facilities for families. At present, the multi-point lock drive and locking technology used for doors and windows in the market mostly uses a single drive chain to achieve locking. When the multi-point lock drive mechanism is pried, it will cause the overall unlocking. Summary of the Invention

[0003] To solve the above technical problems, the object of the present invention is to provide a dual drive mechanism for a multi-point door lock and a locking tongue door lock, including a bottom box 1 and a push block 21 arranged in the bottom box 1 and pushed by a lead screw 6. A main drive plate drive convex block 2103 is arranged at the rear end of the push block 21, and a sub-drive plate drive convex block 2104 is arranged at the front end of the push block 21; the main drive plate drive convex block 2103 is embedded in a main drive plate push block running groove 1904 at one end of the main drive plate 19; the sub-drive plate drive convex block 2104 is embedded in a sub-drive plate drive groove 1101 at one end of the sub-drive plate 11;

[0004] The main drive plate drive convex block 2103 and the sub-drive plate drive convex block 2104 can be symmetrically arranged on the front and rear sides of the push block body.

[0005] Both ends of the main drive plate 19 are respectively connected to a right drive rod 2 and a left drive rod 17; the right drive rod 2 and the left drive rod 17 are respectively connected to a multi-point lock;

[0006] Another end of the main drive plate 19 is provided with a main drive plate rib 1903, and a main drive plate drive lever 1302 of a handle pawl corresponds to the main drive plate rib 1903;

[0007] Another end of the sub-drive plate 11 is provided with a sub-drive plate hooked edge 1103, and the sub-drive plate hooked edge 1103 hooks a locking tongue drive post 1205 on a locking tongue pawl 12;

[0008] The handle pawl 13 and the locking tongue pawl 12 are coaxially rotatably connected to the bottom box 1; on the outer circle of the central hole of the handle pawl 13, a main drive plate drive lever 1302 of the handle pawl and a locking tongue drive convex block 1304 of the handle pawl are arranged, and the locking tongue drive convex block 1304 of the handle pawl is embedded in a locking tongue free travel groove 1204 of the locking tongue pawl 12; a locking tongue limit unlocking lever 1203 is arranged on the locking tongue pawl 12, and the locking tongue limit unlocking lever 1203 corresponds to a locking tongue retraction drive platform 2003. The main drive plate drive convex block 2103 and the unlocking side of the main drive plate push block running groove 1904 ( Figure 1The gap on the right side (of the right side) is less than or equal to the gap between the unlocking side of the driving lug 2104 of the push block sub-driving plate and the driving groove 1101 of the sub-driving plate Figure 1 on the right side); sequential loading is achieved to prevent excessive initial resistance torque of the motor during electric unlocking.

[0009] A bottom box main drive plate unlocking limit block 102 is provided on the box body 1 at the end position of the rightward movement of the main drive plate 19. The length of the main drive plate unlocking idle stroke groove 1906 formed by the main drive plate push block running groove 1904 on the main drive plate 19 and the push block main drive plate driving lug 2103 of the push block 21 is greater than or equal to the distance from the right end of the main drive plate 19 to the bottom box main drive plate unlocking limit block 102. The purpose of the bottom box main drive plate unlocking limit block 102 is to prevent the continuous rightward movement of the main drive plate 19, thereby driving the rightward movement of the sub-drive plate 11, so as to retract and unlock the lock tongue door lock.

[0010] A lock tongue torsion spring 10 is provided at the lower part of the lock tongue 20 to achieve automatic extension of the lock tongue; a lock tongue limit block 9 is provided on the right side of the lock tongue.

[0011] The handle pawl 13 is provided with a handle pawl spring push block driving block 1301, and the handle pawl spring push block driving block 1301 corresponds to the handle pawl spring push block 14; the handle pawl spring push block 14 is arranged outside the spring 15, and the inner side of the spring 15 abuts against the limit groove wall of the bottom box; through this structure, a reset effect on the rotation of the handle pawl 13 is achieved.

[0012] The main drive plate 19 is provided with a main drive plate damping clamping point 1905, and the bottom box 1 is provided with a main drive plate damping reed 16; during the process of the main drive plate 19 moving to the rightmost end, the main drive plate damping clamping point 1905 compresses the main drive plate damping reed 16 to provide a damping effect for the main drive plate.

[0013] The motor 3 is connected to the lead screw 6 through a coupling 4. Bearings 5 are arranged at both ends of the lead screw 6. The lead screw 6 is screwed with a nut 7 in the push block 21 to push the push block 21 to move left and right.

[0014] The motor 3 is connected to the door lock electronic control chip. After electric drive locking and unlocking, the motor drives the push block 21 to move to the middle position of the lead screw 6.

[0015] The locking tongue limiting block 9 is provided with a locking tongue limiting block torsion spring 8; under the action of the locking tongue limiting block torsion spring 8, it deflects towards the locking tongue 20; before the locking tongue 20 moves upward to the triggering position of the locking tongue limiting block 9, the locking tongue guiding edge 2001 of the locking tongue 20 contacts the locking tongue limiting block guiding edge 901 of the locking tongue limiting block 9, restricting the further deflection of the locking tongue limiting block 9 to limit the locking tongue 20; the locking tongue 20 can freely move back and forth in this non-triggering position section; when the locking tongue 20 moves upward through the triggering position of the locking tongue limiting block 9, that is, the locking tongue guiding edge 2001 of the locking tongue 20 disengages from the locking tongue limiting block guiding edge 901 of the locking tongue limiting block 9, the locking tongue limiting block 9 further rotates, and the locking tongue limiting block limiting clamping point 902 on the locking tongue limiting block 9 rotates to below the locking tongue limiting clamping point 2002 on the locking tongue 20, making the locking tongue 20 unable to move downward, achieving the anti-prying function.

[0016] The advantages of the present invention are: a double locking and unlocking system of a multi-point lock and an anti-prying locking tongue, and the multi-point lock drive locking system and the locking tongue locking mechanism are physically isolated from each other and have no mechanical coupling. A dual anti-prying mechanism: in the locked state, the drive multi-point lock system controlled by the main drive plate and the locking tongue system controlled by the auxiliary drive plate are independent of each other, and both need to be unlocked to unlock the lock.

[0017] Dual locking system: when locked, the locking tongue can achieve automatic locking only by relying on its own mechanical structure. Even if the multi-point lock system is not locked, the lock can still have anti-prying performance. Brief Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the invention;

[0019] Figure 2 is Figure 1 the front view of;

[0020] Figure 3 is Figure 2 the enlarged view of;

[0021] Figure 4 is a three-dimensional schematic diagram of the transmission structure;

[0022] Figure 5 is a schematic diagram of the idle stroke groove in the locked state of the main drive plate;

[0023] Figure 6 is a schematic diagram of the idle stroke groove in the unlocked state of the main drive plate;

[0024] Figure 7 is a schematic diagram of the locking tongue structure;

[0025] Figure 8 is a schematic diagram of the connection between the limiting block and the locking tongue;

[0026] Figure 9 is a schematic diagram of the idle stroke groove of the locking tongue pawl;

[0027] Figure 10 Schematic diagram of the lock tongue unlocking

[0028] Figure 11 Schematic diagram of the idle stroke groove of the secondary drive plate push block

[0029] Figure 12 Schematic diagram of the lock tongue reset structure and the main drive plate damping structure

[0030] Component description in the figure

[0031] 1. Bottom box

[0032] 101. Bottom box main drive plate locking limit block

[0033] 102. Bottom box main drive plate unlocking limit block

[0034] 103. Bottom box push block guide groove

[0035] 104. Bottom box lock tongue guide groove

[0036] 2. Right drive rod

[0037] 201. Right drive rod hanging slot

[0038] 202. Right drive rod multi-point lock connection block

[0039] 3. Motor

[0040] 4. Coupling

[0041] 5. Bearing

[0042] 6. Lead screw

[0043] 7. Lead screw nut

[0044] 8. Lock tongue limit block torsion spring

[0045] 9. Lock tongue limit block

[0046] 901. Lock tongue limit block guide edge

[0047] 902. Lock tongue limit block limit point

[0048] 903. Lock tongue limit block unlocking surface

[0049] 10. Lock tongue torsion spring

[0050] 11. Secondary drive plate

[0051] 1101. Secondary drive plate drive groove

[0052] 1102. Secondary drive plate unlocking drive end

[0053] 1103. Side drive plate edge trimming;

[0054] 1104. Side drive plate push block idle stroke groove;

[0055] 12. Lock tongue pawl;

[0056] 1201. Lock tongue pawl drive groove;

[0057] 1202. Lock tongue pawl lock tongue retraction drive point;

[0058] 1203. Lock tongue pawl lock tongue limit unlocking lever;

[0059] 1204. Lock tongue pawl idle stroke groove;

[0060] 1205. Lock tongue pawl drive post;

[0061] 13. Handle pawl;

[0062] 1301. Handle pawl spring push block drive block;

[0063] 1302. Handle pawl main drive plate drive lever;

[0064] 1303. Handle pawl handle square shaft mounting hole;

[0065] 1304. Handle pawl lock tongue drive convex block;

[0066] 14. Handle pawl spring push block;

[0067] 15. Handle pawl spring;

[0068] 16. Main drive plate damping reed;

[0069] 1601. Main drive plate damping reed limit arc;

[0070] 17. Left transmission rod;

[0071] 1701. Left transmission rod hanging groove;

[0072] 1702. Left transmission rod multi-point lock connection block;

[0073] 18. Panel;

[0074] 19. Main drive plate;

[0075] 1901. Main drive plate left transmission rod hanging point;

[0076] 1902. Main drive plate right transmission rod hanging point;

[0077] 1903. Main drive plate rib;

[0078] 1904. Main drive plate push block running groove;

[0079] 1905. Main drive plate damping clamping point;

[0080] 1906. Main drive plate unlocking idle stroke groove;

[0081] 1907. Main drive plate locking idle stroke groove;

[0082] 20. Lock tongue;

[0083] 2001. Lock tongue guiding edge;

[0084] 2002. Lock tongue limiting clamping point;

[0085] 2003. Lock tongue retraction drive platform;

[0086] 21. Push block;

[0087] 2101. Push block guiding protrusion one;

[0088] 2102. Push block guiding protrusion two;

[0089] 2103. Push block main drive plate drive convex block;

[0090] 2104. Push block secondary drive plate drive convex block.

[0091] Note: Figure 1 Moving to the left is the locking direction, and moving to the right is the opening direction. For other figures, refer to Figure 1 . Specific implementation manner

[0092] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings; in the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0093] I. Control of the multi-point lock structure

[0094] The main transmission plate 19 can move left and right in the bottom box 1, and the left transmission rod hanging point 1901 of the main transmission plate 19 is buckled with the left transmission rod hanging groove 1701 on the left transmission rod 17, and the right transmission rod hanging point 1902 of the main transmission plate 19 is buckled with the right transmission rod hanging groove 201 on the right transmission rod 2, so as to realize the rigid connection between the left transmission rod 17, the main transmission plate 19 and the right transmission rod 2. The bottom box 1 is provided with a bottom box main transmission plate locking limit block 101 and a bottom box main transmission plate unlocking limit block 102, and the main transmission plate 19 can only move between the bottom box main transmission plate locking limit block 101 and the bottom box main transmission plate unlocking limit block 102. The left transmission rod 17 and the right transmission rod 2 are respectively provided with a left transmission rod multi-point lock connecting block 1702 and a right transmission rod multi-point lock connecting block 202, so as to match the transmission rod multi-point lock structure of the existing doors and windows. When the main transmission plate 19 moves to the rightmost end, the main transmission plate damping point 1905 thereon compresses the main transmission plate damping spring 16, and the limited damping force limitation is achieved through the rebound effect of the main transmission plate damping spring limiting arc 1601 thereon.

[0095] The handle claw 13 can rotate on the bottom box 1. During the rotation, the handle claw spring push block driving block 1301 of the handle claw 13 will compress the handle claw spring 15 by pushing the handle claw spring push block 14, thereby achieving a reset effect on the rotation of the handle claw 13. During the rotation of the handle claw 13, the handle claw main transmission plate driving lever 1302 on it will push the main transmission plate rib 1903 on the main transmission plate 19, so that the main transmission plate 19 moves from left to right.

[0096] The motor 3 is connected to the lead screw 6 through the coupling 4, and bearings 5 are arranged at both ends of the lead screw 6. When the lead screw 6 rotates, it will push the nut 7 in the push block 21 to move linearly, and then push the push block 21 to move left and right; the push block guide protrusion 1 2101 and the push block guide protrusion 2102 on the push block 21 cooperate with the bottom box push block guide groove 103 on the bottom box 1, so that under the action of the motor 3, the push block 21 can move linearly left and right.

[0097] A main transmission plate push block running groove 1904 is provided on the main transmission plate 19, and the push block main transmission plate driving protrusion 2103 on the push block 21 can move left and right in the main transmission plate push block running groove 1904, and when it contacts the left and right sides of the main transmission plate push block running groove 1904, it pushes the main transmission plate 19 to move to the left and right sides.

[0098] Through the above structure, we can achieve:

[0099] 1. The motor drives the left transmission rod 17 and the right transmission rod 2 to move to the leftmost end to realize the electrically driven locking of the multi-point lock; drives the left transmission rod 17 and the right transmission rod 2 to move to the rightmost end to realize the electrically driven unlocking of the multi-point lock.

[0100] 2. When the operating handle is rotated, the hand claw 13 is driven to rotate synchronously through the hand claw square shaft mounting hole 1303 on the hand claw 13, and the main transmission plate 19 is moved to the right. After the action is completed, the hand claw 13 is reset under the action of the hand claw spring 15, and the handle of the multi-point lock is unlocked.

[0101] Note: After the electric drive is locked, the motor 3 needs to move the push block 21 to the middle position of the lead screw 6, and the main transmission plate push block running groove 1904 on the main transmission plate 19 and the push block main transmission plate driving protrusion 2103 of the push block 21 form the main transmission plate unlocking idle stroke groove 1906. Through the bottom box main transmission plate unlocking limit block 102 on the bottom box 1, the main transmission plate unlocking idle stroke groove 1906 can ensure that when the main transmission plate 19 moves to the rightmost end (unlocking direction), it will not collide with the push block main transmission plate driving protrusion 2103 of the push block 21; that is, when an external force (such as prying the door) causes the main transmission plate to move to the right, when trying to unlock, due to the setting of the idle stroke groove 1906, the main transmission plate 19 will not push the push block 21 to move right, thereby preventing the lock tongue from retracting and unlocking due to the rightward movement of the push block and the rightward movement of the secondary transmission plate. That is, it prevents the lock tongue from being unlocked by external force, and overcomes the defect of the multi-point lock transmission mechanism in the prior art that the whole is unlocked when it is pried.

[0102] After the electric drive operation is unlocked, the motor 3 needs to move the push block 21 to the middle position of the lead screw 6, and the main transmission plate push block running groove 1904 on the main transmission plate 19 and the push block main transmission plate driving protrusion 2103 of the push block 21 form the main transmission plate locking idle travel groove 1907. Through the bottom box main transmission plate locking limit block 101 on the bottom box 1, the main transmission plate locking idle travel groove 1907 can ensure that when the main transmission plate 19 moves to the leftmost (locked) position, it does not collide with the push block main transmission plate driving protrusion 2103 of the push block 21.

[0103] 2. Control of the lock tongue structure

[0104] The locking tongue 20 can move upward (locking direction) and downward (unlocking direction) by the guidance of the bottom box locking tongue guide groove 104 on the bottom box 1, and the locking tongue torsion spring 10 provides the elastic force required for the locking tongue 20 to extend.

[0105] A lock tongue stop block 9 is arranged at the rear side of the lock tongue 20, and the lock tongue stop block 9 deflects toward the lock tongue 20 under the action of the lock tongue stop block torsion spring 8. Before the lock tongue 20 moves upward to the trigger position of the lock tongue stop block 9, the lock tongue guide edge 2001 of the lock tongue 20 contacts the lock tongue stop block guide edge 901 of the lock tongue stop block 9, restricting the lock tongue stop block 9 from further deflecting and limiting the lock tongue 20. The lock tongue 20 can move freely forward and backward in this non-trigger position section. When the lock tongue 20 moves upward and passes the trigger position of the lock tongue limit block 9, that is, the lock tongue guide edge 2001 of the lock tongue 20 is out of overlap with the lock tongue limit block guide edge 901 of the lock tongue limit block 9, the lock tongue limit block 9 rotates further, and the lock tongue limit block limit point 902 on the lock tongue limit block 9 rotates to below the lock tongue limit point 2002 on the lock tongue 20, so that the lock tongue 20 cannot move downward (unlocking direction), thereby achieving an anti-pry effect.

[0106] The bolt pawl 12 is coaxially mounted with the handle pawl 13, and the bolt pawl driving groove 1201 on the bolt pawl 12 cooperates with the handle pawl lock tongue driving protrusion 1304 on the handle pawl 13 to form a bolt pawl idle travel groove 1204. After the handle pawl lock tongue driving protrusion 1304 of the handle pawl 13 rotates through the bolt pawl idle travel groove 1204, the bolt pawl 12 can be driven to rotate.

[0107] When the bolt pawl 12 is rotating, the top of the bolt pawl and bolt limit unlocking lever 1203 on it pushes the bolt limit block unlocking surface 903 of the bolt limit block 9, and the bolt limit block 9 is rotated to disengage the bolt limit card point 2002 and the bolt limit block limit card point 902 of both, thereby completing the unlocking. While unlocking, the bolt pawl and bolt retraction driving point 1202 on the bolt pawl 12 moves the bolt retraction driving platform 2003 of the bolt 20, so that the bolt 20 moves downward (unlocking direction).

[0108] Through the above structure, the unlocking operation of the lock tongue 20 is realized when the handle is rotated to unlock.

[0109] The push block 21 is connected to the bolt pawl 12 through the auxiliary transmission plate 11. The transmission plate 11 is provided with an auxiliary transmission plate driving groove 1101, and the push block auxiliary transmission plate driving protrusion 2104 on the push block 21 can move left and right in the auxiliary transmission plate driving groove 1101, and when it contacts the right side of the auxiliary transmission plate driving groove 1101, it pushes the auxiliary transmission plate 11 to move to the right. In the process of the auxiliary transmission plate 11 moving to the right, the auxiliary transmission plate hook edge 1103 on it will pull the bolt pawl driving column 1205 on the bolt pawl 12, so that the bolt pawl 12 rotates, so that the push block 21 drives the bolt pawl 12, that is, the electric drive unlocking of the bolt 20 is realized.

[0110] The secondary drive plate drive slot 1101 on the secondary drive plate 11 and the secondary drive plate drive projection 2104 on the push block 21 form a secondary drive plate push block idle stroke slot 1104, which is used to avoid the push block 21 colliding with the secondary drive plate 11 when it resets to the middle position of the lead screw 6 after the electric drive unlocks the locking tongue 20.

[0111] In summary, the "control of the multi-point lock structure" mechanism and the "control of the locking tongue structure" mechanism are independently driven respectively, providing two locking methods of "multi-point lock" and "locking tongue". In the locked state of the lock, both sets of mechanisms need to be unlocked simultaneously to completely unlock the lock and open the locked door, improving the anti-prying performance.

[0112] Note: The locking tongue 20 uses the current automatic trigger mechanical structure technology, and through the trigger of its structure, the locking tongue 20 can automatically extend by relying on the potential energy of the locking tongue torsion spring 10 to achieve mechanical automatic locking.

Claims

1. A double transmission mechanism for a multi-point door lock and a latch door lock, comprising a bottom box (1) and a push block (21) arranged in the bottom box (1) and pushed by a lead screw (6), characterized in that: A driving lug (2103) of the main transmission plate is arranged at the rear end of the pushing block (21), and a driving lug (2104) of the auxiliary transmission plate is arranged at the front end of the pushing block (21); the driving lug (2103) of the main transmission plate is embedded in a running groove (1904) of the main transmission plate at one end of the main transmission plate (19); the driving lug (2104) of the auxiliary transmission plate is embedded in a driving groove (1101) of the auxiliary transmission plate at one end of the auxiliary transmission plate (11). Both ends of the main transmission plate (19) are respectively connected with a right transmission rod (2) and a left transmission rod (17); the right transmission rod (2) and the left transmission rod (17) are respectively connected with a multi-point lock. A rib (1903) of the main transmission plate is arranged at the other end of the main transmission plate (19), and a driving lever (1302) of the main transmission plate for the handle pawl is corresponding to the rib (1903) of the main transmission plate. A hooked edge (1103) of the auxiliary transmission plate is arranged at the other end of the auxiliary transmission plate (11), and the hooked edge (1103) of the auxiliary transmission plate hooks a driving column (1205) on the locking tongue pawl (12). The handle pawl (13) and the locking tongue pawl (12) are coaxially rotatably connected to the bottom box (1); a driving lever (1302) of the main transmission plate for the handle pawl and a driving lug (1304) of the handle pawl for the locking tongue are arranged on the outer circle of the central hole of the handle pawl (13), and the driving lug (1304) of the handle pawl for the locking tongue is embedded in a free-travel groove (1204) of the locking tongue pawl (12); a limiting and unlocking lever (1203) of the locking tongue pawl for the locking tongue is arranged on the locking tongue pawl (12), and the limiting and unlocking lever (1203) of the locking tongue pawl for the locking tongue is corresponding to a driving platform (2003) for retracting the locking tongue.

2. The double transmission mechanism of the multi-point door lock and the locking tongue door lock according to claim 1, characterized in that: The clearance between the driving lug (2103) of the main transmission plate and the unlocking side of the running groove (1904) of the main transmission plate is less than or equal to the clearance between the driving lug (2104) of the auxiliary transmission plate and the unlocking side of the driving groove (1101) of the auxiliary transmission plate.

3. The double transmission mechanism of the multi-point door lock and the locking tongue door lock according to claim 1, characterized in that: A bottom box unlocking limit block (102) is arranged on the box body (1) at the right end position of the main transmission plate (19) when it moves to the rightmost.

4. The dual drive mechanism of the multi-point door lock and the locking tongue door lock according to claim 1, characterized in that: A torsion spring (10) of the locking tongue is arranged at the lower part of the locking tongue (20), and a limiting block (9) of the locking tongue is arranged at the right side of the locking tongue (20).

5. The double transmission mechanism of the multi-point door lock and the latch lock according to claim 1, characterized in that: The handle pawl (13) is provided with a driving block (301) of the handle pawl for the spring pushing block, and the driving block (1301) of the handle pawl for the spring pushing block is corresponding to the handle pawl spring pushing block (14); the handle pawl spring pushing block (14) is arranged outside the spring (15), and the inner side of the spring (15) abuts against the limiting groove wall of the bottom box.

6. The double transmission mechanism of the multi-point door lock and the locking tongue door lock according to claim 1, characterized in that: The main transmission plate (19) is provided with a damping clamping point (1905) of the main transmission plate, and a damping reed (16) of the main transmission plate is arranged on the bottom box (1); when the main transmission plate (19) moves to the rightmost, the damping clamping point (1905) of the main transmission plate compresses the damping reed (16) of the main transmission plate.

7. The double transmission mechanism of the multi-point door lock and the locking tongue door lock according to claim 1, characterized in that: The motor (3) is connected with the lead screw (6) through a coupling (4), bearings (5) are arranged at both ends of the lead screw (6), the lead screw (6) is screwed with a nut (7) in the pushing block (21), and then the pushing block (21) is pushed to move left and right.

8. The dual drive mechanism of the multi-point door lock and the latch lock according to claim 1, characterized in that: The motor (3) is connected to the electronic control chip of the door lock. After electrically driving to control locking and unlocking, the motor drives the push block (21) to move to the middle position of the lead screw (6).

9. The dual transmission mechanism of the multi-point door lock and the latch lock according to claim 3, characterized in that: The push block running groove (1904) on the main transmission plate (19) and the push block main transmission plate driving convex block (2103) of the push block (21) form the main transmission plate unlocking idle stroke groove (1906), and the length thereof is greater than or equal to the distance from the right end of the main transmission plate (19) to the bottom box main transmission plate unlocking limit block (102).

10. The double transmission mechanism of the multi-point door lock and the locking tongue door lock according to claim 4, characterized in that: The lock tongue limit block (9) is provided with a lock tongue limit block torsion spring (8); under the action of the lock tongue limit block torsion spring (8), it deflects towards the lock tongue (20); before the lock tongue (20) moves upward to the trigger position of the lock tongue limit block (9), the lock tongue guiding edge (2001) of the lock tongue (20) contacts the lock tongue limit block guiding edge (901) of the lock tongue limit block (9) to limit further deflection of the lock tongue limit block (9) for limiting the lock tongue (20); the lock tongue (20) can freely move back and forth in this non-trigger position section; when the lock tongue (20) moves upward through the trigger position of the lock tongue limit block (9), that is, when the lock tongue guiding edge (2001) of the lock tongue (20) disengages from the lock tongue limit block guiding edge (901) of the lock tongue limit block (9), the lock tongue limit block (9) further rotates, and the lock tongue limit block limiting clamping point (902) on the lock tongue limit block (9) rotates to below the lock tongue limiting clamping point (2002) on the lock tongue (20), so that the lock tongue (20) cannot move downward, achieving the anti-prying effect.

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