A multi-point lock for doors and windows

Abstract

The application discloses a door and window multi-point lock, which comprises a shell, a main lock tongue, a secondary lock tongue, a rotating wheel and a transmission main plate; the shell is internally provided with an elastic anti-falling mechanism and a locking mechanism; the main lock tongue is slidably assembled in the shell, and a torsion spring is arranged between the main lock tongue and the shell to make the main lock tongue exposed to a panel of the shell, and an operation hole is formed in the panel; the rotating wheel is rotatably assembled in the shell, and the rotating wheel is in transmission connection with the transmission main plate; and the transmission main plate is in sliding connection with the secondary lock tongue, so that the secondary lock tongue is extended out of or retracted into the shell. The service life of the lock is prolonged by selecting the torsion spring; the elastic anti-falling mechanism is actuated through the operation hole to make the main lock tongue separated from the shell, and then the direction of the lock tongue is conveniently changed; the operation hole is formed in the panel, so that the appearance of the door and window is not affected, and the risk that the main lock tongue is accidentally popped out of the shell is eliminated; the transmission connection among the rotating wheel, the transmission main plate and the secondary lock tongue simplifies the structure of the lock; and the locking of the secondary lock tongue is realized by the cooperation of the locking mechanism and the transmission main plate.

Description

Technical Field

[0001] This invention relates to the field of door and window lock technology, and in particular to a multi-point lock for doors and windows. Background Technology

[0002] Because different types of doors and windows open and close in different directions, the direction of the latch of the door and window lock must be configured according to the opening and closing direction of the corresponding door and window. In the existing technology, in order to avoid the mismatch between the direction of the latch of the door and window lock and the opening and closing direction of the door and window, multiple door and window locks with different latch directions can be prepared at the same time. However, carrying multiple door and window locks is too cumbersome. If the latch of the door or window is installed in the wrong direction, the installer must remove the lock from the door or window and also disassemble the lock housing before the latch can be reversed. In this process, the installation screws need to be removed. This operation is not only time-consuming, but the screws are also easy to fall off, be lost or damaged during the disassembly process, affecting subsequent installation. The latch reversal efficiency is very low and the operation is quite difficult.

[0003] In the prior art, patent CN214091419U discloses a multi-point lock body. This lock body disengages the locking block from the positioning block by actuating an exposed actuating part, causing the first bolt to eject from the housing; the first bolt is then pushed back into the housing after reversing its direction. When this type of multi-point lock body is installed on doors and windows, the actuating part must be exposed on the side wall of the housing and the outer wall of the door / window so that it can be actuated when needed. Because the actuating part is exposed on the side wall of the housing and the outer wall of the door / window, this structure detracts from the overall aesthetics of the door / window and poses a risk of accidental actuation. Accidental actuation would cause the first bolt to eject from the housing. Furthermore, the aforementioned multi-point lock body has a complex structure, making later maintenance inconvenient.

[0004] In addition, most existing locks use compression springs to expose the bolt outside the housing. Compression springs have a relatively short lifespan, which in turn affects the lifespan of the lock. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-point lock for doors and windows, which enables convenient replacement of the bolt orientation, improves the installation convenience and adaptability of door and window locks, and simplifies the lock structure.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A multi-point lock for doors and windows includes a housing, a main bolt, a secondary bolt, a rotating wheel, and a transmission main board. The housing is provided with an elastic anti-disengagement mechanism to prevent the main bolt from falling off and a locking mechanism for locking the transmission main board.

[0008] The main locking tongue is slidably mounted inside the housing, and a torsion spring is provided between the two to allow the main locking tongue to protrude from the panel of the housing. The panel has an operating hole for operating the elastic anti-disengagement mechanism.

[0009] The rotating wheel is rotatably mounted inside the housing, and the rotating wheel is provided with teeth for actuating the main locking tongue to retract into the housing;

[0010] The rotating wheel is connected to the main transmission plate so that the rotating wheel drives the main transmission plate to slide when it rotates; the main transmission plate is slidably connected to the secondary locking tongue so that the main transmission plate drives the secondary locking tongue to extend or retract into the housing when it slides; the direction of movement of the main transmission plate is perpendicular to the direction of movement of the main locking tongue.

[0011] By using torsion springs instead of compression springs, the lifespan of the lock is improved; the main bolt is disengaged from the housing 1 by actuating the elastic anti-disengagement mechanism through the operating hole on the panel, thus enabling convenient reversal of the main bolt's orientation without removing the lock from the door or window, or disassembling the lock housing; by placing the operating hole on the panel, the aesthetics of the door or window are not affected, and there is no risk of the main bolt accidentally popping out of the housing; the transmission connection between the elastic reset mechanism and the rotating wheel ensures that the rotating wheel is in a preset position when not subjected to external force; the transmission connection between the rotating wheel, the transmission main board, and the secondary bolt simplifies the lock's structure; and the locking mechanism, in cooperation with the transmission main board, achieves locking of the secondary bolt.

[0012] As a further embodiment of the invention, the elastic anti-detachment mechanism and the rotating wheel are distributed on both sides of the main locking tongue; the elastic anti-detachment mechanism includes an anti-detachment slider and a first elastic component, the anti-detachment slider is slidably mounted in the housing, and the anti-detachment slider has a toggle groove corresponding to the position of the operating hole; one end of the first elastic component abuts against the anti-detachment slider, and the other end abuts against the housing. Using the above solution, the anti-detachment slider is reset by the rebound of the first elastic component, thereby effectively limiting the main locking tongue.

[0013] As a further aspect of the invention, an elastic reset mechanism is provided between the rotating wheel and the housing; the elastic reset mechanism is slidably connected to the housing and drively connected to the rotating wheel, so that the rotating wheel is in a preset position when it is not subjected to external force for rotation, and the rotating wheel in the preset position does not interfere with the main locking tongue being pulled out from the housing. By adding the elastic reset mechanism, the elastic reset of the rotating wheel is achieved using the above solution.

[0014] As a further embodiment of the invention, the elastic reset mechanism includes a transmission rack and a second elastic component; the transmission rack is slidably mounted within the housing, and both ends of the second elastic component are respectively connected to the transmission rack and the housing; the rotating wheel is provided with teeth, and the transmission rack is provided with a rack segment that is drivenly connected to the teeth. Using the above embodiment, under the action of the second elastic component, the transmission between the teeth and the rack segment enables the rotating wheel to be in a preset position when not subjected to external force.

[0015] As a further embodiment of the invention, the locking mechanism includes a locking component and a toggle component; the locking component is slidably mounted within the housing, and the toggle component is rotatably mounted within the housing, so that when the toggle component rotates, it drives the locking component to insert into or disengage from the limiting slot of the transmission main board. Using the above embodiment, the locking of the transmission main board is achieved through the cooperation between the locking component and the limiting slot.

[0016] As a further aspect of the invention, the locking component has a second ball hole, which houses a second positioning ball. The second positioning ball is exposed outside the second ball hole by a spring support. The housing has a second positioning hole, which engages with the second positioning ball. Using this solution, the positioning of the locking component is achieved through the movement of the second positioning ball and the second positioning hole, allowing the locking component to lock the transmission main board.

[0017] As a further embodiment of the invention, the rotating wheel includes a rotating wheel body, a driven member, and a linkage mechanism. The rotating wheel body is rotatably mounted within the housing, and its outer circumferential surface is provided with teeth. A section of teeth is provided on the circumference of the rotating wheel body. The driven member is coaxially arranged with the rotating wheel body. Rotating the rotating wheel body causes the driven member to swing, and the driven member swinging in a preset direction drives the transmission main plate to slide through the linkage mechanism. Using the above embodiment, the transmission between the rotating wheel body and the transmission main plate is achieved through the cooperation between the driven member and the linkage mechanism.

[0018] As a further aspect of the invention, the secondary locking tongue is slidably mounted within the housing; the transmission main plate is located between the housing and the secondary locking tongue, the upper surface of the transmission main plate is provided with a plurality of limiting sliders, the housing is correspondingly provided with limiting grooves slidably connected to the limiting sliders, the lower surface of the transmission main plate is provided with a transmission slider, and the secondary locking tongue is correspondingly provided with a transmission groove slidably connected to the transmission sliders. Using the above solution, the secondary locking tongue slides based on the housing through the cooperation of the limiting sliders and limiting grooves; the transmission between the secondary locking tongue and the transmission main plate is achieved through the cooperation of the transmission sliders and transmission grooves.

[0019] As a further embodiment of the invention, the housing is formed by a base plate, a cover plate, and a panel. The base plate has a first support post and a second support post, with the main locking tongue and the secondary locking tongue distributed between them. The first support post is positioned close to the secondary locking tongue and abuts against the transmission main plate. The second support post is positioned close to the main locking tongue, and its upper surface has a first ball hole containing a first positioning ball. A spring is provided between the first positioning ball and the first ball hole, and under the action of the spring, a portion of the first positioning ball is exposed outside the first ball hole. The transmission main plate has a first positioning hole, with the first positioning ball engaging with it. By adding the first support post and the first positioning ball, the two ends of the transmission main plate are effectively supported. When the secondary locking tongue is in the locked state, the engagement of the first positioning hole and the first positioning ball effectively positions the transmission main plate.

[0020] As a further aspect of the invention, connecting rods are respectively connected to both ends of the transmission main plate. The connecting rods are slidably connected to the housing, with one end exposed outside the housing. Each connecting rod has an external connection portion for connecting to an external actuator. Using the above solution, by adding connecting rods to connect to an external actuator, locking can be achieved with the external locking points of the multi-point lock on doors and windows.

[0021] The beneficial effects of this invention are:

[0022] The lifespan of locks can be increased by using torsion springs instead of compression springs;

[0023] By using the operating hole on the panel to move the elastic anti-disengagement mechanism, the main bolt can be disengaged from the housing, thus enabling convenient changes in the orientation of the main bolt. When changing the orientation, it is not necessary to remove the lock from the door or window, nor is it necessary to disassemble the lock housing.

[0024] By placing the operating hole on the panel, the aesthetics of the door and window are not affected, and there is no risk of the main lock tongue accidentally popping out of the housing;

[0025] The transmission connection between the elastic reset mechanism and the rotating wheel ensures that the rotating wheel is in a preset position when it is not subjected to external force.

[0026] The structure of the lock is simplified by the transmission connection between the rotating wheel, the main transmission plate, and the secondary lock tongue;

[0027] The secondary locking tongue is locked by the cooperation of the locking mechanism and the transmission main board. Attached Figure Description

[0028] The invention will now be further described with reference to the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the present invention;

[0030] Figure 2 This is a partial structural schematic diagram of the present invention;

[0031] Figure 3 This is a schematic diagram showing that both the main latch and the secondary latch are in the locked state in this invention;

[0032] Figure 4 This is a partial structural schematic diagram (I) of the shell in this invention;

[0033] Figure 5 This is a partial structural schematic diagram (II) of the shell in this invention;

[0034] Figure 6 This is a schematic diagram of the housing in this invention;

[0035] Figure 7 This is a partial schematic diagram (a) of the present invention, in which the main locking tongue is in the locked state and the secondary locking tongue is in the unlocked state;

[0036] Figure 8 This is a partial schematic diagram showing that both the main bolt and the auxiliary bolt are in the unlocked state in this invention;

[0037] Figure 9 This is a partial schematic diagram of the main locking tongue being disassembled and reversed in this invention;

[0038] Figure 10 This is a schematic diagram of the main locking tongue in this invention;

[0039] Figure 11 This is a schematic diagram of the secondary locking tongue in this invention;

[0040] Figure 12 This is a schematic diagram of the elastic anti-detachment mechanism in this invention;

[0041] Figure 13 This is a schematic diagram (a) of the rotating wheel in this invention;

[0042] Figure 14 This is a schematic diagram (II) of the structure of the rotating wheel in this invention;

[0043] Figure 15 This is a schematic diagram of the elastic reset mechanism in this invention;

[0044] Figure 16 This is a partial schematic diagram (a) of the secondary locking tongue in the unlocked state in this invention;

[0045] Figure 17 This is a partial schematic diagram (II) of the secondary locking tongue in the unlocked state in this invention;

[0046] Figure 18 This is a partial schematic diagram of the secondary locking tongue in the locked state but not locked in the present invention;

[0047] Figure 19 This is a partial schematic diagram (a) showing the secondary locking tongue in a locked state and locked in this invention;

[0048] Figure 20 This is a partial schematic diagram (II) showing the secondary locking tongue in a locked state and locked in this invention;

[0049] Figure 21 This is a schematic diagram of the connection between the transmission main board and the connecting rod in this invention;

[0050] Figure 22 This is a schematic diagram (a) of the locking component in this invention;

[0051] Figure 23 This is a schematic diagram (II) of the locking component in this invention;

[0052] Figure 24 This is a schematic diagram of the present invention in which the main locking tongue is in the locked state, the secondary locking tongue is in the unlocked state, and the elastic reset mechanism is in the natural state;

[0053] Figure 25 This is a schematic diagram of the present invention in which both the main locking tongue and the auxiliary locking tongue are in the unlocked state and the elastic reset mechanism is in the stretched state;

[0054] Figure 26 This is a schematic diagram showing that both the main locking tongue and the auxiliary locking tongue are in the locked state and the elastic reset mechanism is in the compressed state in this invention.

[0055] Figure 27 This is a schematic diagram of the present invention in which both the main locking tongue and the auxiliary locking tongue are in the locked state and the elastic reset mechanism is in the natural state.

[0056] The reference numerals in the attached figures are:

[0057] 1. Shell; 11. Base plate; 111. First support column; 112. Second support column; 113. First ball hole; 114. First limiting block; 115. Second sliding groove; 116. Third limiting block; 117. Fourth limiting block; 12. Cover plate; 121. Limiting sliding groove; 122. Second positioning hole; 123. Fifth sliding groove; 13. Panel; 131. Operating hole; 14. First positioning ball;

[0058] 2. Main locking tongue; 21. Tongue; 22. Connecting part; 23. Tail; 24. First sliding groove;

[0059] 3. Secondary locking tongue; 31. Transmission slide groove; 32. Second limit block;

[0060] 4. Rotating wheel; 41. Rotating wheel body; 411. Pulley tooth; 412. Tooth; 413. Pulley block; 42. Follower; 421. Sector groove; 43. Linkage mechanism; 431. First link; 432. Second link; 433. Connecting protrusion;

[0061] 5. Transmission main board; 51. Limiting slot; 52. Limiting slider; 53. Transmission slider; 54. First positioning hole; 55. Connecting slide groove;

[0062] 6. Elastic anti-detachment mechanism; 61. Anti-detachment slider; 611. Actuating groove; 612. Fourth sliding groove; 62. First elastic component;

[0063] 7. Locking mechanism; 71. Locking component; 711. Second ball hole; 712. Limiting block; 713. Third slide groove; 714. Actuating slot; 72. Actuating component; 721. Actuating head; 73. Second positioning ball;

[0064] 8. Torsion spring;

[0065] 9. Elastic reset mechanism; 91. Transmission rack; 911. Rack segment; 92. Second elastic component;

[0066] 10. Connecting rod. Detailed Implementation

[0067] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0068] For a multi-point lock for doors and windows, please refer to [link / reference]. Figure 9 and Figure 16 As shown, the system includes a housing 1, a main locking bolt 2, a secondary locking bolt 3, a rotating wheel 4, and a transmission main board 5. The housing 1 contains an elastic anti-detachment mechanism 6 to prevent the main locking bolt 2 from falling off and a locking mechanism 7 to lock the transmission main board 5. The elastic anti-detachment mechanism 6 is located close to the main locking bolt 2 and limits its sliding position to prevent separation from the housing 1. The locking mechanism 7 locks the transmission main board 5 by engaging with it.

[0069] The main locking bolt 2 is slidably mounted inside the housing 1, with a torsion spring 8 between them to allow the main locking bolt 2 to protrude from the panel 13 of the housing 1. The panel 13 has an operating hole 131 for operating the elastic anti-detachment mechanism 6. When the main locking bolt 2 needs to be reversed according to actual needs, the user can use a lever tool to pass through the operating hole 131 and move the elastic anti-detachment mechanism 6 to separate it from the main locking bolt 2. Then, the main locking bolt 2 is pulled out of the housing 1, reversed, and installed back into the housing 1. After the main locking bolt 2 is installed, the elastic anti-detachment mechanism 6, through its own springback reset, again limits the sliding of the main locking bolt 2 outward from the housing 1.

[0070] The rotating wheel 4 is rotatably mounted inside the housing 1. The rotating wheel 4 is provided with a tooth 411 for actuating the main bolt 2 to retract into the housing 1. When the rotating wheel 4 rotates in the unlocking direction of the main bolt 2, the tooth 411 actuates the main bolt 2 to retract into the housing 1.

[0071] The rotating wheel 4 is connected to the transmission main plate 5 so that the rotation of the rotating wheel 4 drives the transmission main plate 5 to slide. The transmission main plate 5 is slidably connected to the secondary locking tongue 3 so that the sliding of the transmission main plate 5 drives the secondary locking tongue 3 to extend or retract into the housing 1. The direction of movement of the transmission main plate 5 is perpendicular to the direction of movement of the main locking tongue 2.

[0072] The main locking tongue 2 and the auxiliary locking tongue 3 move in directions perpendicular to the panel 13, which is called vertical movement; the transmission main board 5 moves in a direction parallel to the panel 13, which is called horizontal movement.

[0073] Please see Figure 17 As shown, when the rotating wheel 4 rotates in the locking direction of the secondary locking tongue 3 (i.e., Figure 17 (As shown, rotating clockwise), the shift tooth 411 moves away from the main locking tongue 2, and the main locking tongue 2 is exposed outside the housing 1 under the elastic action of the torsion spring 8; please refer to Figure 18 As shown, the continued rotation of the rotating wheel 4 will drive the transmission main board 5 to move horizontally (i.e., Figure 16 (As shown, sliding to the left), the transmission main board 5 drives the secondary locking tongue 3 to move vertically, that is, the secondary locking tongue 3 extends out of the housing 1.

[0074] Please refer to Figure 10 As shown, the main latch 2 is a slanted latch.

[0075] Please refer to Figure 11 As shown, the secondary locking bolt 3 is a square locking bolt.

[0076] Please refer to Figure 17 As shown, the main bolt 2 is locked by the elastic action of the torsion spring 8; please refer to... Figure 17 As shown, by rotating the wheel 4 in the direction Figure 17 Rotating counterclockwise as shown unlocks the main bolt 2. (See also...) Figure 17As shown, by rotating the wheel 4 in the direction Figure 17 Rotate clockwise as shown to lock the secondary latch 3; please refer to [link / reference]. Figure 19 As shown, the locking mechanism 7 and the transmission main board 5 are engaged to lock the secondary locking tongue 3; please refer to... Figure 17 As shown, by rotating the wheel 4 in the direction Figure 17 Rotate counterclockwise as shown to unlock the secondary bolt 3.

[0077] Please see Figure 6 As shown, the housing 1 is formed by a bottom plate 11, a cover plate 12 and a front panel 13.

[0078] Please see Figure 7 and Figure 16 As shown, the secondary latch 3, rotating wheel 4, main latch 2, and torsion spring 8 are sequentially mounted on the base plate 11 along the length of the panel 13. The transmission main plate 5 is distributed close to the panel 13. The main latch 2, secondary latch 3, rotating wheel 4, and torsion spring 8 are all located below the transmission main plate 5. Please refer to [link / reference]. Figure 1 As shown, a cover plate 12 is provided above the transmission main plate 5. Both the main locking tongue 2 and the auxiliary locking tongue 3 are slidably mounted on the base plate 11. The two shaft ends of the rotating wheel 4 are rotatably mounted on the base plate 11 and the cover plate 12, respectively. A torsion spring 8 is mounted on the base plate 11. An elastic anti-detachment mechanism 6 is mounted on the base plate 11. The elastic anti-detachment mechanism 6 and the torsion spring 8 are distributed on the same side of the main locking tongue 2, that is, the elastic anti-detachment mechanism 6 and the rotating wheel 4 are distributed on both sides of the main locking tongue 2. The lower surface of the transmission main plate 5 is slidably connected to the auxiliary locking tongue 3, and the upper surface of the transmission main plate 5 can slide based on the cover plate 12.

[0079] Among them, the surface of the transmission main board 5 closest to the secondary locking tongue 3 is the lower surface, and the surface of the main board 5 furthest from the secondary locking tongue 3 is the upper surface.

[0080] Among them, when the multi-point lock for doors and windows can be installed on doors and windows, the housing 1 is fixed in the lock groove of the door or window through the panel 13.

[0081] Please refer to Figure 4 As shown, panel 13 has a main latch hole that matches the main latch 2 and a secondary latch hole that matches the secondary latch 3.

[0082] Please see Figure 3 and Figure 16 As shown, the transmission main plate 5 is located between the cover plate 12 and the secondary locking tongue 3. The upper surface of the transmission main plate 5 is provided with several limiting sliders 52, and the cover plate 12 is correspondingly provided with limiting grooves 121 parallel to the panel 13, with the limiting sliders 52 located within the limiting grooves 121. The limiting grooves 121 guide the horizontal movement of the transmission main plate 5. Please refer to... Figure 16 and Figure 21As shown, the lower surface of the transmission main board 5 is provided with a transmission slider 53, and the upper surface of the secondary locking tongue 3 is provided with an inclined transmission groove 31. The transmission slider 53 is located in the transmission groove 31, driving the secondary locking tongue 3 to move vertically.

[0083] In this embodiment, there are two limiting sliders 52, one limiting slider 52 is close to the main locking tongue 2, and the other limiting slider 52 is close to the secondary locking tongue 3.

[0084] Please see Figure 7 and Figure 10 As shown, the main locking bolt 2 sequentially includes a tongue 21, a connecting portion 22, and a tail 23. Both the tongue 21 and the tail 23 protrude to both sides, meaning their widths are greater than the width of the connecting portion 22. A torsion spring 8 is positioned near the tongue 21. One end of the torsion spring 8 rests against the base plate 11, and the other end rests against the rear end face of the tongue 21 (i.e., the end face of the tongue 21 near the connecting portion 22). An elastic anti-disengagement mechanism 6 is positioned near the connecting portion 22 to limit the tail 23. The main locking bolt 2 can slide on the base plate 11. Specifically, a first sliding groove 24 is provided on the connecting portion 22. A corresponding first limiting block 114 is provided on the base plate 11. The first limiting block 114 is located in the first sliding groove 24. The first limiting block 114 guides the vertical movement of the main locking bolt 2.

[0085] The first groove 24 has an open end that extends to the rear end face of the tail 23, and a sealed end that is located on the connecting part 22 so that the main locking tongue 2 can be separated from the housing 1.

[0086] Please see Figure 7 and Figure 11 As shown, the secondary locking tongue 3 is slidably mounted within the housing 1. Specifically, the secondary locking tongue 3 is slidably mounted on the base plate 11. A second limiting block 32 is provided on the lower surface of the secondary locking tongue 3. Please refer to... Figure 4 and Figure 5 As shown, a second slide groove 115 perpendicular to the panel 13 is provided on the base plate 11. The second limiting block 32 is located in the second slide groove 115, and the second slide groove 115 guides the vertical movement of the secondary locking tongue 3.

[0087] The base plate 11 has two third limiting blocks 116 spaced apart and perpendicular to the panel 13. The gap between the two third limiting blocks 116 forms a second sliding groove 115.

[0088] Please see Figure 9 As shown, the elastic anti-detachment mechanism 6 includes an anti-detachment slider 61 and a first elastic component 62. The anti-detachment slider 61 is slidably mounted inside the housing 1. For details, please refer to [link to relevant documentation]. Figure 12 and Figure 5As shown, the anti-detachment slider 61 has a fourth groove 612. The elastic anti-detachment mechanism 6 is assembled in the mounting groove on the base plate 11. The mounting groove is horizontally set and opens towards one end of the main locking tongue 2. A fourth limiting block 117 that matches the fourth groove 612 is provided in the mounting groove. The fourth limiting block 117 is placed in the fourth groove 612 to limit the range of horizontal movement of the anti-detachment slider 61. The anti-detachment slider 61 has a toggle groove 611 corresponding to the position of the operating hole 131. One end of the first elastic member 62 abuts against the anti-detachment slider 61, and the other end abuts against the groove wall of the mounting groove at the end away from the main locking tongue 2. Under the action of the first elastic member 62, the end of the anti-detachment slider 61 blocks the front end face of the tail 23 of the main locking tongue 2, blocking the tail 23 and preventing the main locking tongue 2 from sliding out of the main locking tongue hole.

[0089] The specific operation for changing the direction of the main bolt 2 is as follows:

[0090] Please see Figure 7 As shown, the user can use a lever to pass through the operation hole 131 on the panel 13 and extend it into the toggle slot 611; see also Figure 9 As shown, the lever pushes the actuation groove 611 to move the anti-detachment slider 61 away from the main locking tongue 2; when the anti-detachment slider 61 disengages from the tail 23 of the main locking tongue 2, the main locking tongue 2 is no longer blocked by the anti-detachment slider 61, and the main locking tongue 2 can be pulled out from the main locking tongue hole to completely separate the main locking tongue 2 from the housing 1.

[0091] Please see Figure 7 As shown, after the main locking tongue 2 changes direction, the main locking tongue 2 is inserted into the housing 1; when the main locking tongue 2 is fully inserted into the housing 1, the anti-disengagement slider 61 is located between the tongue 21 and the tail 23, and the anti-disengagement slider 61 is reset by the first elastic component 62, blocking the front end face of the tail 23 of the main locking tongue 2 again, thereby stopping the tail 23 again.

[0092] The first elastic component 62 includes, but is not limited to, a spring.

[0093] The sliding direction of the anti-detachment slider 61 is perpendicular to the sliding direction of the main locking tongue 2, that is, the anti-detachment slider 61 moves horizontally.

[0094] Furthermore, to facilitate the insertion of the main locking tongue 2 into the housing 1, the end of the anti-detachment slider 61 has a guide slope, which is located on the side of the anti-detachment slider 61 closer to the panel 13. The end of the tail 23 away from the connecting part 22 is a conical head. Specifically, during the process of inserting the main locking tongue 2 into the housing 1, the guide slope contacts the slope of the conical head on the side of the anti-detachment slider 61; during the insertion of the main locking tongue 2 into the housing 1, the slope of the conical head pushes the anti-detachment slider 61 to slide away from the main locking tongue 2; after the main locking tongue 2 is fully inserted into the housing 1, the guide slope separates from the conical head, and the elastic anti-detachment mechanism 6 rebounds and resets, that is, the anti-detachment slider 61 rebounds. After the elastic anti-detachment mechanism 6 resets, the anti-detachment slider 61 is located between the tongue 21 and the tail 23, blocking the front end face of the tail 23 and preventing the main locking tongue 2 from sliding out of the main locking tongue hole.

[0095] Please see Figure 13 and Figure 16 As shown, the rotating wheel 4 includes a wheel body 41, a driven member 42, and a linkage mechanism 43. (See also...) Figure 1 and Figure 2 As shown, the main body 41 of the rotating wheel is rotatably mounted inside the housing 1. Specifically, both ends of the main body 41 are rotatably mounted on the base plate 11 and the cover plate 12, respectively. The main body 41 has a connecting square hole for inserting a handle to rotate the main body 41. The outer circumferential surface of the main body 41 is provided with teeth 411, and a section of teeth 412 is provided on the circumference of the main body 41. Please refer to... Figure 8 As shown, when the main body 41 of the rotating wheel rotates in the unlocking direction of the main bolt 2 (i.e., Figure 8 (As shown, rotating counterclockwise), the pawl 411 actuates the main latch 2, that is, it actuates the protruding front end face of the tail 23 located on one side of the main body 41, causing the main latch 2 to slide away from the panel 13, thereby retracting the main latch 2 into the housing 1 to achieve the unlocking function. When the main body 41 rotates in the locking direction of the secondary latch 3 (i.e., rotating counterclockwise), Figure 8 (As shown, rotating clockwise), the shift tooth 411 moves away from the main locking tongue 2 and does not contact it; the main locking tongue 2 is exposed outside the housing 1 under the elastic action of the torsion spring 8. Therefore, when the main body of the rotating wheel 41 continues to rotate in the locking direction of the auxiliary locking tongue 3, it does not affect the main locking tongue 2 being exposed outside the housing 1.

[0096] The follower 42 is coaxially arranged with the wheel body 41, and the follower 42 is located between the wheel body 41 and the base plate 11. For details, please refer to [link / reference needed]. Figure 14 As shown, a sector-shaped groove 421 is provided on the driven member 42. A corresponding lever 413 is provided on the main body of the wheel. The length of the sector-shaped groove 421 is greater than the length of the lever 413, and the lever 413 is placed in the sector-shaped groove 421 and can slide relative to the sector-shaped groove 421.

[0097] Please see Figure 8As shown, when the main body 41 of the rotating wheel rotates in the unlocking direction of the main bolt 2 (i.e., Figure 8 (As shown, rotating counterclockwise), the lever 413 moves freely in the sector groove 421. The lever 413 does not drive the driven member 42 to rotate. Therefore, the transmission main plate 5 is stationary and will not rotate with the rotating wheel body 41. When the rotating wheel body 41 rotates in the locking direction of the secondary locking tongue 3 (i.e., ... Figure 8 (As shown, rotating counterclockwise), the lever 413 pushes the fan-shaped groove 421 close to the end face of the secondary lock tongue 3, so that the driven member 42 follows the rotating wheel body 41 to rotate, and the rotating driven member 42 drives the transmission main plate 5 to move horizontally towards the secondary lock tongue 3.

[0098] For further details, please refer to Figure 13 As shown, the linkage mechanism 43 consists of a first link 431 and a second link 432. Both ends of the first link 431 are rotatably hinged to the second link 432 and the driven member 42, respectively. One end of the second link 432 is hinged to the second link 432, and the other end is rotatably connected to the base plate 11. A connecting protrusion 433 is provided on the upper surface of the second link 432. A corresponding connecting groove 55 is provided on the transmission main plate 5. The connecting groove 55 is a vertical groove perpendicular to the panel 13. The connecting protrusion 433 is placed within the connecting groove 55.

[0099] When the main body 41 of the rotating wheel drives the driven member 42 to rotate, the driven member 42 indirectly drives the second connecting rod 432 to rotate through the first connecting rod 431. The rotating second connecting rod 432, through the cooperation between the connecting protrusion 433 and the connecting groove 55, causes the transmission main plate 5 to move horizontally. The horizontally moving transmission main plate 5, through the cooperation between the transmission slider 53 and the transmission groove 31, causes the secondary locking tongue 3 to move vertically, thereby realizing the extension or retraction of the secondary locking tongue 3 into the housing 1.

[0100] Furthermore, to ensure smooth horizontal movement of the transmission main board 5, please refer to... Figure 5 As shown, the base plate 11 is provided with a first support column 111 and a second support column 112. The first support column 111 and the second support column 112 are distributed at both ends of the transmission main plate 5. For details, please refer to [link / reference]. Figure 7 As shown, a main bolt 2 and a secondary bolt 3 are distributed between the first support post 111 and the second support post 112. The first support post 111 is located near the secondary bolt 3, and the second support post 112 is located near the main bolt 2.

[0101] The first support column 111 abuts against the transmission main board 5. When the transmission main board 5 moves horizontally, the first support column 111 effectively supports the lower surface of the transmission main board 5, so that the transmission main board 5 moves more smoothly.

[0102] The second support column 112 has a first ball hole 113 on its upper surface. A first positioning ball 14 is housed within the first ball hole 113. A spring is provided between the first positioning ball 14 and the first ball hole 113; under the action of the spring, a portion of the first positioning ball 14 is exposed outside the first ball hole 113. The transmission main plate 5 has a first positioning hole 54. (See also...) Figure 18 As shown, when the secondary locking tongue 3 moves vertically, the first positioning ball 14, supported by the spring, effectively supports the lower surface of the transmission main plate 5, ensuring smooth movement of the transmission main plate 5. Please refer to [link / reference]. Figure 16 As shown, when the secondary locking tongue 3 is in the unlocked state, the first positioning ball 14 is exactly located in the first positioning hole 54, thereby positioning the transmission main board 5.

[0103] Preferably, the first positioning hole 54 is a round hole.

[0104] In this embodiment, to save space, the torsion spring 8 is mounted on the first support column 111.

[0105] When the secondary locking tongue 3 is in the locked state, the transmission main board 5 can be locked by the locking mechanism 7 to prevent the user from driving the secondary locking tongue 3 back into the housing 1 by rotating the rotating wheel 4. Please refer to Figure 19 and Figure 20 As shown, the locking mechanism 7 includes a locking component 71 and a toggle component 72. The locking component 71 is slidably mounted within the housing 1. The locking component 71 is located on the side of the secondary latch 3 away from the panel 13, that is, behind the secondary latch 3. Please refer to [link / reference]. Figure 22 and Figure 4 As shown, the lower surface of the locking component 71 is provided with a third sliding groove 713. A third limiting block 116 is located in the third sliding groove 713. The third limiting block 116 guides the vertical movement of the locking component 71. The upper surface of the locking component 71 is provided with a limiting block 712. Please refer to... Figure 1 As shown, the cover plate 12 is provided with a fifth sliding groove 123 that matches the limiting block 712, and the fifth sliding groove 123 is a vertical groove perpendicular to the panel 13. The limiting block 712 is located in the fifth sliding groove 123. The fifth sliding groove 123 guides the vertical movement of the limiting block 712. A limiting groove 51 is provided on the edge of the transmission main plate 5 near the locking component 71.

[0106] Please see Figures 18-20 and Figure 22 As shown, the actuating element 72 is rotatably mounted within the housing 1. The lock cylinder is mounted at the center of the actuating element 72. The user can rotate the actuating element 72 by inserting a key into the lock cylinder. When the actuating element 72 rotates towards the locking direction of the secondary latch 3 (i.e.,...), Figure 18(As shown, rotating clockwise), the dial 721, located on the outer periphery of the actuating member 72, actuates the locking member 71's actuating slot 714. Continued rotation causes the locking member 71 to move vertically towards the panel 13, thereby causing the locking member 71's limiting block 712 to insert into the transmission main board 5's limiting slot 51, i.e., the secondary locking tongue 3 is in a locked state. When the secondary locking tongue 3 needs to be released, the actuating member 72 reverses the movement of the locking member 71, causing the locking member 71's limiting block 712 to separate from the transmission main board 5's limiting slot 51. Once the limiting block 712 is completely separated from the limiting slot 51, the secondary locking tongue 3 is released from its locked state. At this time, the secondary locking tongue 3 is still in a locked state. To release the secondary locking tongue 3 from its locked state, the rotating wheel 4 must be rotated in the unlocking direction of the secondary locking tongue 3 (i.e.,...). Figure 18 (as shown, rotating counterclockwise) causes the secondary locking tongue 3 to retract into the housing 1.

[0107] For further details, please refer to Figure 22 As shown, a second ball hole 711 is provided on the locking component 71. The second ball hole 711 is located on the upper surface of the locking component 71. A second positioning ball 73 is housed within the second ball hole 711. A spring is provided between the second positioning ball 73 and the second ball hole 711. Under the action of the spring, a portion of the second positioning ball 73 is exposed outside the second ball hole 711 for positioning the locking component 71. A second positioning hole 122 is provided on the housing 1. The second positioning ball 73 cooperates with the second positioning hole 122 to achieve effective positioning of the locking component 71.

[0108] For details, please refer to Figure 1 and Figure 6 As shown, the second positioning hole 122 is figure-eight shaped, meaning there are two positioning holes distributed along the sliding direction of the locking component 71. The positioning hole of the second positioning hole 122 furthest from the transmission main board 5 is a free positioning hole, and the positioning hole closer to the transmission main board 5 is a locking positioning hole. When the locking component 71 does not need to lock the transmission main board 5, the second positioning ball 73 is located in the free positioning hole, thus positioning the locking component 71 and preventing accidental sliding. When the locking component 71 needs to lock the transmission main board 5, the actuating member 72 moves the locking component 71 towards the transmission main board 5, and simultaneously, the second positioning ball 73, supported by a spring, slides from the free positioning hole to the locking positioning hole. After the locking component 71 locks the transmission main board 5, the second positioning ball 73 is located in the locking positioning hole, thus positioning the locking component 71 and preventing accidental sliding.

[0109] Please see Figure 9 and Figure 15As shown, an elastic reset mechanism 9 is provided between the rotating wheel 4 and the housing 1. The elastic reset mechanism 9 is slidably mounted inside the housing 1. The elastic reset mechanism 9 is drivenly connected to the rotating wheel 4 so that the rotating wheel 4 is in a preset position when it is not rotated by external force. When the rotating wheel 4 is in the preset position, it does not interfere with the main locking tongue 2 being pulled out of the housing 1, so there is no need to rotate the rotating wheel 4 when changing the direction of the main locking tongue 2.

[0110] The elastic reset mechanism 9 is installed inside the base plate 11 and located on the side of the rotating wheel 4 away from the panel 13. The elastic reset mechanism 9 includes a transmission rack 91 and a second elastic component 92. The transmission rack 91 is slidably mounted inside the housing 1, meaning that the transmission rack 91 can slide horizontally on the base plate 11. The two ends of the second elastic component 92 are connected to the transmission rack 91 and the housing 1, respectively. The rotating wheel 4 is provided with teeth 412. The transmission rack 91 is provided with a rack segment 911 that meshes with the teeth 412.

[0111] The second elastic component 92 consists of a telescopic rod and a spring. One end of the telescopic rod is fixed to the base plate 11, and the other end is connected to the transmission gear 91. The spring is sleeved on the telescopic rod, and both ends of the spring are fixedly connected to the two ends of the telescopic rod, respectively.

[0112] Specifically, when the rotating wheel 4 rotates in the unlocking direction of the main bolt 2 (i.e.) Figure 8 (As shown, rotating counterclockwise), the wheel 4 drives the main locking tongue 2 to retract into the housing 1, while the teeth 412 drive the rack segment 911 to move, so that the second elastic component 92 is in a stretched state; then the wheel 4 is released, the second elastic component 92 elastically resets, and the torsion spring 8 pushes the main locking tongue 2 out of the housing 1. When the second elastic component 92 elastically resets, the second elastic component 92 drives the transmission rack 91 to move horizontally, so that the teeth 412 meshing with the rack segment 911 rotate, that is, the wheel 4 rotates clockwise to reset.

[0113] In this embodiment, please refer to Figure 24 As shown, when the main latch 2 is in the locked state and the secondary latch 3 is in the unlocked state, the toggle block 413 is in the preset position. At this time, the toggle block 413 is in contact with the left end face of the fan-shaped groove 421 (i.e. the end face near the secondary latch 3). At this time, the elastic reset mechanism 9 is in the natural state (i.e., the state without external force).

[0114] Please see Figure 24 As shown, when the main bolt 2 is in the locked state and the secondary bolt 3 is in the unlocked state, the rotating wheel body 41 is moved towards... Figure 24The counterclockwise rotation shown in the diagram activates the tail of the main bolt 2 via the pry bar 411, thereby unlocking the main bolt 2. Specifically, during the counterclockwise rotation of the wheel body 41, the pry bar 413 moves to the right within the sector groove 421. Since the length of the sector groove 421 is greater than the length of the pry bar 413, the pry bar 413 will not contact the right end face of the sector groove 421 (i.e., the end face near the main bolt 2). Therefore, the driven member 42 remains stationary and does not follow the counterclockwise rotation of the wheel body 41. During this period, the wheel body 41 drives the elastic reset mechanism 9 to move, so that the elastic reset mechanism 9 is in a stretched state. When the main bolt 2 is fully retracted into the housing 1 and in the unlocked state, the pry bar 413 just contacts the right end face of the sector groove 421 (e.g., the side closest to the main bolt 2). Figure 25 (As shown). After the main bolt 2 unlocks, the handle is released, and the elastic reset mechanism 9's own elastic force drives the main body 41 of the rotating wheel to rotate clockwise to reset. During this time, the toggle block 413 moves to the left within the sector groove 421 and does not contact the left end face of the sector groove 421. Therefore, the driven member 42 is also stationary and does not follow the rotating wheel body 41 to rotate clockwise. After the rotating wheel body 41 is fully reset, the toggle block 413 is just reset to contact the left end face of the sector groove 421 (as shown). Figure 24 As shown in the figure, at this time, the pawl 411 is completely disengaged from the main locking tongue 2, so it will not interfere with the extension or retraction of the main locking tongue 2.

[0115] Please see Figure 24 As shown, when the main bolt 2 is in the locked state and the secondary bolt 3 is in the unlocked state, the rotating wheel body 41 is moved towards... Figure 24 The rotating mechanism rotates clockwise as shown to lock the secondary latch 3. Specifically, during the clockwise rotation of the main body 41, the lever 413 pushes the left end face of the sector groove 421, meaning the main body 41 drives the driven member 42 to rotate clockwise synchronously. The driven member 42 locks the secondary latch 3 via the linkage mechanism 43. During this period, the main body 41 drives the elastic reset mechanism 9 to move, so that the elastic reset mechanism 9 is in a compressed state. When the secondary latch 3 has just finished locking, the positional relationship between the lever 413 and the sector groove 421 is as follows: Figure 26 As shown. After the secondary locking tongue 3 is locked, the handle is released, and the elastic reset mechanism 9's own elastic force drives the rotating wheel body 41 to rotate counterclockwise to reset. During this period, the driven member 42 is stationary and will not rotate counterclockwise with the rotating wheel body 41. After complete reset, the toggle block 413 is just reset to contact the right end face of the sector groove 421 (as shown). Figure 27 (As shown).

[0116] Please see Figure 27 As shown, when the main bolt 2 and the secondary bolt 3 are in the locked state, turning the handle counterclockwise will move the main body 41 of the rotating wheel towards... Figure 27 The counterclockwise rotation shown above unlocks the main latch 2 and the secondary latch 3. Specifically, during the counterclockwise rotation of the wheel body 41, the lever 413 pushes the right end face of the sector groove 421, that is, the wheel body 41 drives the driven member 42 to rotate counterclockwise synchronously. The driven member 42 unlocks the secondary latch 3 through the linkage mechanism 43. At the same time, the lever 411 of the wheel body 41 also pushes the tail 23 of the main latch 2, causing the main latch 2 to retract into the housing 1. After the main latch 2 and the secondary latch 3 have unlocked, the handle is released. The elastic force of the elastic reset mechanism 9 drives the wheel body 41 to rotate clockwise to reset. During this period, the driven member 42 is stationary and does not rotate clockwise with the wheel body 41. After the reset is completed, the lever 413 is just reset to contact the left end face of the sector groove 421 (e.g., ...). Figure 24 As shown in the figure, at this time, the tooth 411 is also completely disengaged from the main locking tongue 2, so it will not interfere with the extension or retraction of the main locking tongue 2.

[0117] Please see Figure 1 and Figure 16 As shown, connecting rods 10 are connected to both ends of the transmission main plate 5. The connecting rods 10 are slidably connected to the housing 1, with one end protruding from the housing 1. When the transmission main plate 5 slides, the connecting rods 10 slide along with it. The connecting rods 10 are provided with an external connection for connecting to an external actuator. The connecting rods 10 are connected to a locking point on a door or window via the external connection. Since this part is prior art, it will not be described in detail here.

[0118] The aforementioned multi-point lock for doors and windows is vertically installed on the doors and windows. A handle is installed on the door or window so that it engages with the connecting square hole of the rotating wheel 4. This structure has at least the following locking or unlocking execution schemes and states, which are briefly described here with reference to the attached drawings.

[0119] Specifically, rotating the wheel 4 in the unlocking direction of the main bolt 2 is set as forward rotation, and rotating the wheel 4 in the locking direction of the auxiliary bolt 3 is set as reverse rotation.

[0120] Option 1: Lock or unlock the door using the main bolt 2.

[0121] Locking action: After closing doors and windows, please refer to [the instructions]. Figure 7 As shown, the main locking tongue 2 is exposed outside the housing 1 under the action of the torsion spring 8, that is, the main locking tongue 2 is in the locked state;

[0122] Unlocking procedure: Please refer to Figure 8 As shown, turn the handle to make the rotating wheel 4 rotate clockwise. The rotating wheel 4, through the shifting tooth 411, moves the main lock tongue 2 back into the housing 1, that is, the main lock tongue 2 is in the unlocked state; pull the handle to open the door or window; after the door or window is open, release the handle. Please refer to [link to relevant documentation]. Figure 7As shown, the elastic reset mechanism 9 drives the rotating wheel 4 to reset, and the torsion spring 8 drives the main locking tongue 2 to pop out of the housing 1.

[0123] Option 2: Locking or unlocking the door using the main bolt 2 and the secondary bolt 3:

[0124] Locking action: First, perform the locking action of Scheme 1 to lock the main bolt 2; then, please refer to... Figure 18 As shown, turning the handle causes the rotating wheel 4 to rotate in the opposite direction. The rotating wheel 4 drives the transmission main board 5 to cause the secondary locking tongue 3 to extend out of the housing 1, that is, the secondary locking tongue 3 is in the locked state.

[0125] Unlocking procedure: Please refer to Figure 16 and Figure 17 As shown, turning the handle causes the rotating wheel 4 to rotate forward. The rotating wheel 4 drives the transmission main plate 5 to retract the secondary lock tongue 3 into the housing 1. At the same time, it also drives the main lock tongue 2 to retract into the housing 1 through the shift tooth 411. That is, both the main lock tongue 2 and the secondary lock tongue 3 are in the unlocked state. Pull the handle to open the door or window. After the door or window is open, release the handle. Please refer to [link / reference]. Figure 7 As shown, the elastic reset mechanism 9 drives the rotating wheel 4 to reset, and the torsion spring 8 drives the main locking tongue 2 to pop out of the housing 1.

[0126] Option 3: Locking or unlocking of doors and windows is achieved through the main bolt 2 and the auxiliary bolt 3, and a lock cylinder and key are provided, with the lock cylinder mounted on the actuating element 72.

[0127] Locking action: Perform the locking action of Scheme Two to lock both the main bolt 2 and the secondary bolt 3; then, please refer to... Figure 19 and Figure 20 As shown, insert the key into the lock cylinder, and the key will drive the actuating component 72 to rotate. The rotating actuating component 72 will move the locking component 71 to slide closer to the transmission main board 5 until the limiting block 712 of the locking component 71 is inserted into the limiting slot 51 of the transmission main board 5, that is, the secondary lock tongue 3 is in the locked state; after locking, the key is pulled out.

[0128] Unlocking procedure: Insert the key into the lock cylinder. Please refer to [link / reference]. Figure 18 As shown, the key drives the actuating component 72 to rotate, causing the locking component 71 to slide away from the transmission main board 5 until the locking component 71 is completely separated from the limiting slot 51 of the transmission main board 5; the key is then removed; and the unlocking action of scheme two is then performed.

[0129] This invention improves the lifespan of the lock by using a torsion spring 8 instead of a compression spring; the main bolt 2 is disengaged from the housing 1 by actuating the elastic anti-disengagement mechanism 6 through the operating hole 131 on the panel 13, thus enabling convenient reversal of the orientation of the main bolt 2 without removing the lock from the door or window or disassembling the lock housing; by placing the operating hole 131 on the panel 13, the aesthetics of the door or window are not affected, and there is no risk of the main bolt 2 accidentally popping out of the housing 1; the transmission connection between the elastic reset mechanism 9 and the rotating wheel 4 ensures that the rotating wheel 4 is in a preset position when not subjected to external force; the transmission connection between the rotating wheel 4, the transmission main plate 5, and the secondary bolt 3 simplifies the structure of the lock; and the locking mechanism 7 and the transmission main plate 5 work together to lock the secondary bolt 3.

[0130] The above is a detailed description of one embodiment of the present invention, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent protection scope of the present invention.

Claims

1. A multi-point lock for doors and windows, characterized in that, It includes a housing (1), a main locking tongue (2), a secondary locking tongue (3), a rotating wheel (4) and a transmission main board (5). The housing (1) is provided with an elastic anti-disengagement mechanism (6) to prevent the main locking tongue (2) from falling off and a locking mechanism (7) for locking the transmission main board (5). The main locking tongue (2) is slidably mounted inside the housing (1), and a torsion spring (8) is provided between them so that the main locking tongue (2) is exposed on the panel (13) of the housing (1). The panel (13) is provided with an operation hole (131) for operating the elastic anti-detachment mechanism (6). The rotating wheel (4) is rotatably mounted inside the housing (1), and the rotating wheel (4) is provided with a prying tooth (411) for actuating the main locking tongue (2) to retract into the housing (1). The rotating wheel (4) is connected to the transmission main plate (5) so that the rotating wheel (4) drives the transmission main plate (5) to slide when it rotates; the transmission main plate (5) is slidably connected to the secondary locking tongue (3) so that the transmission main plate (5) drives the secondary locking tongue (3) to extend or retract into the housing (1) when it slides; the direction of movement of the transmission main plate (5) is perpendicular to the direction of movement of the main locking tongue (2); The locking mechanism (7) includes a locking component (71) and a toggle component (72); the locking component (71) is slidably mounted in the housing (1), and the toggle component (72) is rotatably mounted in the housing (1) so that when the toggle component (72) rotates, it drives the locking component (71) to insert into or disengage from the limiting slot (51) of the transmission main board (5).

2. The multi-point lock for doors and windows according to claim 1, characterized in that, The elastic anti-detachment mechanism (6) and the rotating wheel (4) are distributed on both sides of the main locking tongue (2); the elastic anti-detachment mechanism (6) includes an anti-detachment slider (61) and a first elastic component (62). The anti-detachment slider (61) is slidably mounted in the housing (1). The anti-detachment slider (61) has an actuating groove (611) corresponding to the position of the operating hole (131). One end of the first elastic component (62) abuts against the anti-detachment slider (61), and the other end abuts against the housing (1).

3. The multi-point lock for doors and windows according to claim 1, characterized in that, An elastic reset mechanism (9) is provided between the rotating wheel (4) and the housing (1); the elastic reset mechanism (9) is slidably connected to the housing (1) and is drivenly connected to the rotating wheel (4) so ​​that the rotating wheel (4) is in a preset position when it is not rotated by external force, and the rotating wheel (4) does not interfere with the main locking tongue (2) being pulled out from the housing (1) when it is in the preset position.

4. The multi-point lock for doors and windows according to claim 3, characterized in that, The elastic reset mechanism (9) includes a transmission rack (91) and a second elastic component (92); the transmission rack (91) is slidably mounted in the housing (1), and the two ends of the second elastic component (92) are respectively connected to the transmission rack (91) and the housing (1); the rotating wheel (4) is provided with teeth (412), and the transmission rack (91) is provided with a rack segment (911) that meshes with the teeth (412).

5. The multi-point lock for doors and windows according to claim 1, characterized in that, The locking component (71) has a second ball hole (711) which contains a second positioning ball (73). The second positioning ball (73) is exposed outside the second ball hole (711) by the support of the spring. The housing (1) has a second positioning hole (122) which cooperates with the second positioning ball (73).

6. The multi-point lock for doors and windows according to claim 1, characterized in that, The rotating wheel (4) includes a rotating wheel body (41), a driven member (42), and a linkage mechanism (43); the rotating wheel body (41) is rotatably mounted in the housing (1), and its outer circumferential surface is provided with teeth (411), and a section of teeth (412) is provided on the circumference of the rotating wheel body (41); the driven member (42) is coaxially arranged with the rotating wheel body (41), and rotating the rotating wheel body (41) causes the driven member (42) to swing, and the driven member (42) swinging in a preset direction drives the transmission main plate (5) to slide through the linkage mechanism (43).

7. The multi-point lock for doors and windows according to claim 1, characterized in that, The secondary locking tongue (3) is slidably mounted inside the housing (1); the transmission main board (5) is located between the housing (1) and the secondary locking tongue (3). The upper surface of the transmission main board (5) is provided with a plurality of limiting sliders (52), and the housing (1) is provided with corresponding limiting grooves (121) that are slidably connected to the limiting sliders (52). The lower surface of the transmission main board (5) is provided with a transmission slider (53), and the secondary locking tongue (3) is provided with corresponding transmission grooves (31) that are slidably connected to the transmission sliders (53).

8. The multi-point lock for doors and windows according to claim 1, characterized in that, The housing (1) is formed by a base plate (11), a cover plate (12) and a panel (13). The base plate (11) is provided with a first support column (111) and a second support column (112), and the main locking tongue (2) and the secondary locking tongue (3) are distributed between them. The first support column (111) is located near the secondary locking tongue (3) and abuts against the transmission main plate (5). The second support column (112) is located near the main locking tongue (2). The upper surface of the second support column (112) is provided with a first ball hole (113). The first ball hole (113) contains a first positioning ball (14). A spring is provided between the first positioning ball (14) and the first ball hole (113). Under the action of the spring, a part of the first positioning ball (14) is exposed outside the first ball hole (113). The transmission main plate (5) is provided with a first positioning hole (54), and the first positioning ball (14) cooperates with it.

9. The multi-point lock for doors and windows according to claim 1, characterized in that, The transmission main board (5) is connected to two connecting rods (10) at both ends. The connecting rods (10) are slidably connected to the housing (1) and one end of the connecting rods (1) is exposed outside the housing (1). The connecting rods (10) are provided with external connecting parts for connecting external actuators.

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