Lock structure and hinged door system comprising same

Abstract

The invention discloses a lock structure and a hinged door system comprising the same. The lock structure comprises a lock box provided with a lock groove; the lock tongue can move up and down between a locking position and an unlocking position, the lock tongue extends out and enters the lock groove when the lock tongue is located at the locking position, and the lock tongue retracts inwards and is separated from the lock groove when the lock tongue is located at the unlocking position; a second seat body; the second lock rod is hinged to the second seat body, the second lock rod is provided with a clamping hook part, and the clamping hook part can move between a first position and a second position relative to the spring bolt; when the clamping hook part is located at the second position, the spring bolt can move to the locking position so as to be clamped and fixed with the clamping hook part; the clamping hook part is further provided with a guide face, when the clamping hook part is located at the first position and the spring bolt is located at the locking position, the guide face and the spring bolt abut against each other, and when the clamping hook part continues to move towards the second position, the spring bolt can abut against the guide face so that the second lock rod can rotate relative to the second base till the guide face crosses the spring bolt. And then the second lock rod can reset and rotate to enable the clamping hook part to reach the second position and be clamped with the spring bolt.

Description

Technical Field

[0001] The invention relates to the technical field of door and window hardware accessories, and in particular to a lock structure and a double door system comprising the lock structure. Background Art

[0002] The double-door system usually includes a lock structure, a first track, a second track, a first door and window sash and a second door and window sash. The first door and window sash is slidably arranged on the first track, and the second door and window sash is slidably arranged on the second track. The extension directions of the first track and the second track can be parallel to each other or at an angle to each other. The first door and window sash and the second door and window sash can slide horizontally on their corresponding tracks independently of each other, and the first door and window sash and the second door and window sash can be approached to each other to a closed position to achieve a fully closed door, and the first door and window sash and the second door and window sash can be moved away from each other to an open position to achieve a fully open door. The lock structure can simultaneously lock the first door and window sash and the second door and window sash in the closed position.

[0003] The lock structure usually includes a lock box, a main lock body and a secondary lock body; the lock box is provided with a lock slot, and the lock box is arranged on the first track; the main lock body is arranged on the first door and window sash, and the main lock body can move horizontally synchronously with the first door and window sash, and the lock tongue of the main lock body can move up and down between an extended state and a retracted state; the secondary lock body is arranged on the second door and window sash, and the secondary lock body can move horizontally synchronously with the second door and window sash; when the first door and window sash and the second door and window sash are close to each other to the closed position, the lock tongue of the main lock body can be switched to an extended state, the lock tongue enters the lock slot and is able to form a clamping connection with the lock rod of the secondary lock body, thereby realizing the locking of the first door and window sash and the second door and window sash at the same time.

[0004] However, when the second door and window sash has not moved into place (that is, not completely closed), if the lock tongue switches to the extended state and enters the lock slot prematurely due to an error operation, the second door and window sash continues to move toward the closed position, causing the lock rod and lock tongue of the secondary lock body to collide with each other, which can easily cause damage to the mechanical structure and obvious noise, and it is difficult to lock the first door and window sash and the second door and window sash at the same time. Summary of the invention

[0005] In order to overcome at least one of the defects described in the above-mentioned prior art, the present invention provides a lock structure and a double door system including the same, aiming to solve the problem that in the existing lock structure, when the second door and window sash has not moved into place and the lock tongue is extended in advance, the lock rod of the secondary lock body collides with the lock tongue of the main lock body, causing damage to the mechanical structure and noise, and it is difficult to lock the first door and window sash and the second door and window sash at the same time.

[0006] The technical solution adopted by the present invention to solve the problem is:

[0007] The lock structure is used for a double-door system, comprising: a lock box for being arranged on a track, the lock box being provided with a lock slot; a lock tongue for being arranged on a first door or window sash for upward and downward movement, the lock tongue being able to move upward and downward between a locked position and an unlocked position; when in the locked position, the lock tongue extends out and enters the lock slot; when in the unlocked position, the lock tongue is retracted and separated from the lock slot; a second seat body for being arranged on a second door or window sash; a second lock rod being hinged on the second seat body, the second lock rod having a hook portion, the hook portion being able to move relative to the lock tongue between the first position and the second position movement; when the hook portion is in the second position, the locking tongue can be moved to the locking position to be locked and fixed with the hook portion; wherein, the hook portion also has a guide surface, when the hook portion is in the first position and the locking tongue is in the locking position, the guide surface and the locking tongue are arranged against each other, when the hook portion continues to move toward the second position, the locking tongue can push the guide surface to make the second locking rod rotate relative to the second seat body until the guide surface passes over the locking tongue, and then the second locking rod can be reset and rotated to make the hook portion reach the second position and be locked with the locking tongue.

[0008] According to some embodiments of the present invention, the lock structure further includes a second elastic member, which is disposed between the second seat body and the second locking rod, and the second elastic member is configured to drive the second locking rod to reset and rotate so that the hook portion reaches the second position.

[0009] According to some embodiments of the present invention, the second seat body moves linearly along a horizontal direction, and a projection of the guide surface onto the horizontal plane is inclined to the moving direction of the second seat body.

[0010] According to some embodiments of the present invention, the second locking rod further has a rod portion, the hook portion is connected to the rod portion, the hook portion has a slot, the slot is formed at the intersection of the hook portion and the rod portion, the guide surface and the slot are arranged opposite to each other, and when the hook portion is in the second position and the lock tongue is in the locked position, the slot is engaged with the lock tongue.

[0011] According to some embodiments of the present invention, the guide surface includes a first arc surface and a guide inclined surface, the first arc surface is convexly arranged and connected between the card slot and the guide inclined surface, and when the guide surface and the lock tongue are against each other, the lock tongue contacts the guide inclined surface and the first arc surface in turn.

[0012] According to some embodiments of the present invention, the guide surface further includes a second arc surface, the second arc surface, the guide inclined surface and the first arc surface are connected in sequence, and the second arc surface is connected to a side of the guide inclined surface away from the slot.

[0013] According to some embodiments of the present invention, the lock box is provided with a guide surface; when the projection of the lock tongue onto the horizontal plane and the projection of the guide surface onto the horizontal plane at least partially overlap, the lock tongue in an extended state and the guide surface are pressed against each other, and when the lock tongue continues to move toward the lock slot, the guide surface can push the lock tongue in the extended state to retract the lock tongue until the lock tongue passes over the guide surface, and then the lock tongue can be extended again and enter the lock slot.

[0014] According to some embodiments of the present invention, the lock structure also includes a first seat body, which is used to be set on a first door or window sash, and the lock tongue is movably arranged on the first seat body up and down, and the lock tongue can move up and down between a telescopic state and a retracted state relative to the first seat body, and the first seat body can move linearly in a horizontal direction, and the projection of the guide surface onto the first plane is inclined to the moving direction of the first seat body, and the first plane is perpendicular to the horizontal plane and parallel to the moving direction of the first seat body.

[0015] According to some embodiments of the present invention, the lock structure also includes a first elastic member, which is transmission-connected to the lock tongue; when the lock tongue needs to be extended, the first elastic member can elastically drive the lock tongue to finally move to an extended state; when the lock tongue needs to be retracted, the first elastic member can elastically drive the lock tongue to finally move to a retracted state.

[0016] In addition, the present invention also discloses a double-door system, including the lock structure as described above, and also including a first track, a second track, a first door and window sash and a second door and window sash, the first door and window sash is slidably arranged on the first track, the second door and window sash is slidably arranged on the second track, the lock box is arranged on the first track, the lock tongue is movably arranged on the first door and window sash and can move synchronously in the horizontal direction with the first door and window sash, the second seat body is arranged on the second door and window sash and can move synchronously in the horizontal direction with the second door and window sash, and the angle between the extension directions of the first track and the second track is between 90-180.

[0017] In summary, the lock structure and the double-door system including the lock structure provided by the present invention have at least the following technical effects:

[0018] When the first door and window sash and the second door and window sash move towards the closed position, if the second door and window sash has not moved into place (that is, not completely closed) and the lock tongue extends out in advance and enters the lock groove, as the second door and window sash continues to move, the guide surface of the hook portion will first contact the lock tongue, and the lock tongue pushes the guide surface, and the guide surface converts the impact force into rotational displacement, causing the second locking rod to rotate to drive the hook portion to rotate. When the hook portion rotates to a critical position, the guide surface is disengaged from the lock tongue, and the hook portion can be reset and rotated to engage with the lock tongue, thereby locking the first door and window sash and the second door and window sash in the closed position at the same time; in this way, when the lock tongue is extended in advance due to misoperation, dynamic avoidance can be achieved by setting the guide surface, and guided contact between the hook portion and the lock tongue can be achieved, thereby eliminating the rigid collision between the hook portion and the lock tongue, avoiding metal collision noise, and even if the lock tongue is extended in advance due to misoperation, the first door and window sash and the second door and window sash can be locked at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the double-door system (both door and window sashes are moved to the closed position) according to the first embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the exploded structure of the double-door system according to the first embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the lock structure of the first embodiment of the present invention (when the door is closed normally, the lock tongue is simultaneously engaged with the hook portion and the lock groove);

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the lock structure of the first embodiment of the present invention (the guide surface and the lock tongue are arranged against each other when the lock tongue is extended in advance);

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the secondary lock body according to the first embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the explosion structure of the secondary lock body according to the first embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the matching structure of the lock box, the main lock body and the handle according to the first embodiment of the present invention;

[0026] Figure 8 It is a three-dimensional structural diagram of the lock box according to the first embodiment of the present invention;

[0027] Fig. 9 It is a schematic diagram of the three-dimensional structure of the double-door system (both door and window sashes are moved to the closed position) according to the second embodiment of the present invention;

[0028] Fig.10 This is a schematic diagram of the exploded structure of the double-door system according to the second embodiment of the present invention;

[0029] Fig.11 This is a schematic diagram of the coordination structure of the main lock body and the auxiliary lock body according to the second embodiment of the present invention.

[0030] The meanings of the reference numerals are as follows:

[0031] 1. Lock box; 11. Lock groove; 12. Guide surface; 13. Transition surface; 2. Main lock body; 21. First seat body; 22. First locking rod; 23. Lock tongue; 3. Secondary lock body; 31. Second seat body; 311. Rotation groove; 312. Connecting groove; 32. Second locking rod; 321. Rod portion; 3211. First connecting rod; 3212. Second connecting rod; 322. Hook portion; 3221. Slot; 3222. Guide surface; 32221. First arc surface; 32222. Second arc surface; 32223. Guide slope; 323. Connecting block; 324. Rotating shaft; 325. Connecting arm; 33. Second elastic member; 4. First track; 5. Second track; 6. First door and window sash; 7. Second door and window sash; 8. Handle. DETAILED DESCRIPTION

[0032] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0036] Embodiment 1

[0037] See also Figures 1 to 4The present embodiment discloses a lock structure for a double door system, the lock structure comprising a lock box 1, a main lock body 2 and a secondary lock body 3; the lock box 1 is used to be set on a track, specifically, the lock box 1 is used to be set on a first track 4, the lock box 1 is provided with a lock slot 11, the main lock body 2 is used to be installed on a first door and window sash 6, and the secondary lock body 3 is used to be installed on a second door and window sash 7; specifically, the main lock body 2 comprises a lock tongue 23, and the secondary lock body 3 comprises a second seat body 31 and a second locking rod 32; it is easy to understand that the first door and window sash 6 and the second door and window sash 7 can be close to each other to a closed door position to achieve a fully closed door, and the first door and window sash 6 and the second door and window sash 7 can be away from each other to an open door position to achieve a fully open door.

[0038] The lock tongue 23 is arranged on the first door and window sash 6 for upward and downward movement, and the lock tongue 23 can move up and down between a locked position and an unlocked position; when in the locked position, the lock tongue 23 extends out and enters the lock groove 11; when in the unlocked position, the lock tongue 23 retracts and separates from the lock groove 11;

[0039] The second base body 31 is used to be arranged on the second door and window sash 7. The second locking rod 32 is hinged on the second base body 31. The second locking rod 32 has a hook portion 322. The hook portion 322 can move between a first position and a second position relative to the locking tongue 23. When the hook portion 322 is in the second position, the locking tongue 23 can move to the locking position to be locked and fixed with the hook portion 322.

[0040] Among them, Figure 4 As shown, the hook portion 322 also has a guide surface 3222. When the hook portion 322 is in the first position and the lock tongue 23 is in the locked position, the guide surface 3222 and the lock tongue 23 are set against each other. When the hook portion 322 continues to move toward the second position, the lock tongue 23 can push the guide surface 3222 to make the second locking rod 32 rotate relative to the second seat body 31 until the guide surface 3222 passes over the lock tongue 23, and then the second locking rod 32 can be reset and rotated to make the hook portion 322 reach the second position and engage with the lock tongue 23. Figure 3 .

[0041] Specifically, in the double-door system, when the first door and window sash 6 and the second door and window sash 7 need to be moved freely, the lock tongue 23 needs to be moved to the unlocked position. At this time, the lock tongue 23 is in a retracted state relative to the first door and window sash 6. No matter how the first door and window sash 6 moves, the lock tongue 23 is separated from the lock slot 11 and the hook portion 322.

[0042] Specifically, in the double-door system, when it is necessary to lock the first door and window sash 6 and the second door and window sash 7 at the same time, the first door and window sash 6 and the second door and window sash 7 need to be close to each other to the closed position, and the lock tongue 23 in the retracted state moves to just below the lock slot 11 as the first door and window sash 6 moves, and the hook portion 322 also moves to the second position as the second door and window sash 7 moves, and the projection of the lock tongue 23 on the horizontal plane overlaps with the projection of the lock slot 11 on the horizontal plane, and then the lock tongue 23 can extend relative to the first door and window sash 6 to be engaged with the lock slot 11 and the hook portion 322 at the same time. The lock tongue 23 moves to a position where it can be engaged with the lock slot 11 and the hook portion 322 at the same time, that is, it is in the locked position. For details, please refer to Figure 1 and Figure 3 .

[0043] Specifically, in the double-door system, when the first door and window sash 6 and the second door and window sash 7 need to be locked at the same time, the first door and window sash 6 and the second door and window sash 7 need to be close to each other to the closed door position. If the second door and window sash 7 is not moved into place (that is, not completely closed) and the lock tongue 23 is extended in advance and enters the lock slot 11, as the second door and window sash 7 continues to move, please refer to Figure 4 The hook portion 322 can first move to the first position, that is, move to the position where the guide surface 3222 and the lock tongue 23 just come into contact. Due to the contact between the guide surface 3222 and the lock tongue 23, as the second door and window sash 7 continues to move, the lock tongue 23 can push the guide surface 3222, and the guide surface 3222 converts the impact force into rotational displacement, so that the second locking rod 32 rotates to drive the hook portion 322 to rotate. When the hook portion 322 rotates to the critical position, the guide surface 3222 is out of contact with the lock tongue 23, and the hook portion 322 can be reset and rotated to finally reach the first position. The guide surface 3222 is set so that the hook portion 322 and the lock tongue 23 are in the second position and are engaged with the lock tongue 23, thereby locking the first door and window sash 6 and the second door and window sash 7 in the closed position at the same time; in this way, the lock structure provided by the present embodiment can achieve dynamic avoidance by setting the guide surface 3222 when the lock tongue 23 is extended prematurely due to an error operation, and realize the guiding contact between the hook portion 322 and the lock tongue 23, thereby eliminating the rigid collision between the hook portion 322 and the lock tongue 23, avoiding the metal collision noise, and even if the lock tongue 23 is extended prematurely due to an error operation, the first door and window sash 6 and the second door and window sash 7 can be locked at the same time.

[0044] It should be noted that the double-door system can also achieve a half-open state, that is, one of the first door and window sash 6 and the second door and window sash 7 can be moved to the closed position; when the double-door system is in a half-open state, if the first door and window sash 6 is in the closed position, the first door and window sash 6 can be locked by the above-mentioned main lock body 2 and lock box 1. Specifically, the lock tongue 23 can move with the first door and window sash 6 to just below the lock slot 11, and then the lock tongue 23 can extend relative to the first door and window sash 6 to be snapped into the lock slot 11, thereby achieving the locking of the first door and window sash 6.

[0045] like Figure 5 and Figure 6 As shown, preferably, in this embodiment, the auxiliary lock body 3 also includes a second elastic member 33, and the second elastic member 33 is arranged between the second base body 31 and the second locking rod 32. After the guide surface 3222 passes over the lock tongue 23, the second elastic member 33 is configured to drive the second locking rod 32 to reset and rotate so that the hook portion 322 reaches the second position. When the locking cam 322 is in the unlock state, the locking cam 322 can be locked to the unlocked position by the locking cam 323. The second locking cam 322 can be locked to the unlocked position by the locking cam 323. No additional operational intervention is performed, which not only simplifies the door closing operation, but also improves the user experience, making the opening and closing of the door of the double-door system easier and more natural; thirdly, the second elastic member 33 can absorb and buffer part of the impact force during the rotation of the second locking rod 32, and reduce the vibration and stress concentration caused by mechanical collision, which helps to enhance the overall stability of the lock structure and extend its service life; finally, because the second elastic member 33 can ensure the accurate resetting and engagement of the hook portion 322, the occurrence of faults such as loose locking or inability to lock due to the failure of the hook portion 322 to reset normally is reduced, which reduces the maintenance cost and repair frequency of the double-door system, improves the reliability and availability of the system, and provides users with a safer and more convenient use environment.

[0046] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, preferably, in this embodiment, the second seat body 31 moves linearly in the horizontal direction, and the projection of the guide surface 3222 onto the horizontal plane is inclined to the moving direction of the second seat body 31. In this way, on the one hand, during the door closing process, if the lock tongue 23 is extended in advance, when the guide surface 3222 of the hook portion 322 contacts the lock tongue 23, this inclined setting can make the contact and interaction between the lock tongue 23 and the guide surface 3222 smoother, so that when the lock tongue 23 pushes against the guide surface 3222, the second lock rod 32 can rotate more smoothly, avoiding the problem of jamming or excessive resistance caused by vertical collision, thereby optimizing the collision buffering and guiding process; on the other hand, the inclined guide surface 3222 design is helpful for the hook The part 322 reaches the second position more accurately during the movement. Since the inclination angle of the guide surface 3222 forms a certain relationship with the moving direction of the second seat body 31, when the lock tongue 23 pushes the guide surface 3222 to rotate the second locking rod 32, the hook part 322 can move along a predetermined trajectory, reducing the inaccurate or unstable connection caused by movement deviation. This ensures that the lock tongue 23 and the hook part 322 can be reliably connected, thereby improving the accuracy and stability of the lock structure in locking the first door and window sash 6 and the second door and window sash 7.

[0047] Preferably, the guiding surface 3222 may be a guiding inclined surface 32223 or a guiding curved surface, and the projection of the guiding inclined surface 32223 or the guiding curved surface onto the horizontal plane is inclined to the moving direction of the second seat body 31 .

[0048] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, preferably, in this embodiment, the second locking rod 32 also has a rod portion 321, the hook portion 322 is fixedly connected to the rod portion 321, the hook portion 322 has a slot 3221, the slot 3221 is formed at the intersection of the hook portion 322 and the rod portion 321, the guide surface 3222 and the slot 3221 are arranged back to back, and when the hook portion 322 is in the second position and the lock tongue 23 is in the locked position, the slot 3221 is engaged with the lock tongue 23.

[0049] The lock body 32 is locked and the locking cam 321 is unlocked when the locking cam 322 is unlocked, and the locking cam 321 is unlocked when the locking cam 322 is unlocked. The lock tongue 23 can be quickly and firmly engaged. The synergistic effect of such precise guidance and firm engagement greatly improves the accuracy and stability of the lock structure in locking the first door and window sash 6 and the second door and window sash 7, effectively preventing locking failure due to accidental collision or vibration, and ensuring that the double-door system can maintain a reliable locking state under various complex environments; on the other hand, the guide surface 3222 and the card slot 3221 are arranged back to back, so that the lock structure can achieve an efficient locking function in a limited space. This design avoids the bloated structure caused by adding additional locking components, making the lock structure more compact. The compact structure not only saves installation space, but also helps to improve the overall strength and rigidity of the lock structure, and enhances the stability and reliability of the lock structure.

[0050] like Figure 6 The cam 324 is provided with the second end cap 325 of the second end cap 326, and the cam 325 is provided with the second end cap 326 of the second end cap 326. In this way, through clever design, the buffering and avoidance functions are integrated into the auxiliary lock body 3, without the need for additional buffering devices or shock-absorbing materials, thereby reducing costs; and, it can effectively prevent the rigid collision between the hook portion 322 and the lock tongue 23, reducing the risk of damage to the hook portion 322.

[0051] like Figure 6As shown, more specifically, the second locking rod 32 further includes a connecting block 323 , the rotating shaft 324 and the clamping arm 325 are both fixed to the connecting block 323 , and the connecting block 323 is fixed to the rod portion 321 .

[0052] It should be noted that, in some other embodiments, the second elastic member 33 may also be, but is not limited to, a torsion spring or a spring or elastic rubber, etc., which can be selected according to actual needs and is not limited here.

[0053] like Figure 3 , Figure 4 and Figure 5 As shown, preferably, in this embodiment, the guide surface 3222 includes a first arc surface 32221 and a guide slope 32223, the first arc surface 32221 is convexly arranged and connected between the card slot 3221 and the guide slope 32223, and when the guide surface 3222 and the lock tongue 23 are against each other, the lock tongue 23 contacts the guide slope 32223 and the first arc surface 32221 in turn.

[0054] In this way, on the one hand, when the guide surface 3222 and the lock tongue 23 are against each other, the lock tongue 23 contacts the guide inclined surface 32223 and the first arc surface 32221 in sequence, and the guide inclined surface 32223 provides an initial guiding direction for the lock tongue 23 at a suitable angle, so that the lock tongue 23 can smoothly change the motion trajectory and move toward the direction of the slot 3221, and the convex setting of the first arc surface 32221 plays a role in smooth transition, avoiding the jamming or impact that may occur when the lock tongue 23 directly enters the slot 3221 from the guide inclined surface 32223. This smooth guiding process The door closing action is made smoother, the noise caused by collision is reduced, and the user experience is improved. In addition, after moving along the guide bevel 32223, the lock tongue 23 can naturally slide toward the slot 3221 along the curvature of the first curved surface 32221, which greatly improves the accuracy of the lock tongue 23 entering the slot 3221. Compared with the structure without the first curved surface 32221, the lock tongue 23 is easier and more accurately to be inserted into the slot 3221, reducing the failure of the card connection caused by poor guidance, and ensuring that the lock structure can reliably lock the first door and window sash 6 and the second door and window sash 7.

[0055] like Figure 3 , Figure 4 and Figure 5As shown, more preferably, in this embodiment, the guide surface 3222 also includes a second arc surface 32222, the second arc surface 32222, the guide slope 32223 and the first arc surface 32221 are connected in sequence, and the second arc surface 32222 is convexly arranged to be connected to the side of the guide slope 32223 away from the slot 3221. In this way, the second curved surface 32222, the guiding bevel 32223 and the first curved surface 32221 are connected in sequence to form a complete and coherent guiding system; in the process of closing the door, the lock tongue 23 first contacts the guiding bevel 32223, and the guiding bevel 32223 guides the lock tongue 23 at a suitable angle to initially change the direction of movement, so that it moves toward the direction of the slot 3221; then, the lock tongue 23 enters the area of ​​the first curved surface 32221, and the convex design of the first curved surface 32221 plays a buffering and transitional role, allowing the lock tongue 23 to continue to move steadily and smoothly; when the lock tongue 23 is slightly offset or rebounded due to an unexpected situation, the second curved surface 32222 is convexly arranged on the side of the guiding bevel 32223 away from the slot 3221, providing reverse guidance for the lock tongue 23, ensuring that the lock tongue 23 quickly returns to the correct path and finally accurately snaps into the slot 3221. This full-process coherent guidance greatly improves the smoothness of door closing and avoids jamming and collision problems.

[0056] It should be noted that during the door closing process, when the first door and window sash 6 has not moved into place (even if it is not completely closed), if the lock tongue 23 is switched to the extended state in advance due to an incorrect operation, the first door and window sash 6 will continue to move toward the door closing position, causing the lock tongue 23 of the main lock body 2 to collide with the lock box 1, which can also easily cause damage to the mechanical structure and obvious noise, and it is difficult to lock the first door and window sash 6, and it is also difficult to lock both the first door and window sash 6 and the second door and window sash 7 at the same time.

[0057] like Figure 7 and Figure 8 As shown, in order to solve the above-mentioned problem, further, in the present embodiment, the lock box 1 is provided with a guide surface 12; when the projection of the lock tongue 23 onto the horizontal plane and the projection of the guide surface 12 onto the horizontal plane at least partially overlap, the lock tongue 23 in the extended state and the guide surface 12 are arranged against each other, and when the lock tongue 23 continues to move toward the lock slot 11 (that is, the first door and window sash 6 continues to move toward the closed position), the guide surface 12 can push the lock tongue 23 in the extended state to retract the lock tongue 23 until the lock tongue 23 passes over the guide surface 12, and then the lock tongue 23 can be extended again and enter the lock slot 11.

[0058] In this way, on the one hand, during the door closing process, when the first door and window sash 6 has not moved into place (i.e., the door is not completely closed) and the lock tongue 23 is extended in advance due to misoperation, if the first door and window sash 6 continues to be moved, the guide surface 12 can push the lock tongue 23 in the extended state to retract it, thereby avoiding a direct collision between the lock tongue 23 and the lock box 1, effectively preventing mechanical structure damage caused by the collision, extending the service life of the lock, and reducing the maintenance and replacement costs caused by structural damage. In addition, when the lock tongue 23 is pushed inward by the guide surface 12 and retracts and passes over the guide surface 12, the lock tongue 23 can be extended again and enter the lock groove 11. This process ensures that the lock tongue 23 can enter the lock groove 11 according to the normal locking process, thereby achieving the first locking process. The effective locking of a door and window sash 6 avoids the problem of being unable to lock due to the premature extension of the lock tongue 23. This design allows the user to successfully complete the closing and locking operations of the door and window in the event of an erroneous operation, avoiding the trouble of re-operation or failure to lock due to erroneous operation, improving the fault tolerance of the lock and reducing the difficulty of use for the user; on the other hand, the direct collision between the lock tongue 23 and the lock box 1 will produce obvious noise, which will not only affect the user's experience, but may also cause interference to the surrounding environment. The process of the guide surface 12 pushing the lock tongue 23 to retract is relatively smooth, avoiding violent collisions, thereby eliminating the noise caused by the collision, making the door closing process quieter, and improving the user's comfort.

[0059] like Figure 2 , Figure 7 and Figure 8 As shown, specifically, in the present embodiment, the main lock body 2 also includes a first seat body 21, and a lock tongue 23 is movably arranged on the first seat body 21 up and down. The first seat body 21 is used to be arranged on the first door and window sash 6 and can slide along the first door and window sash 6. The first seat body 21 can move linearly in the horizontal direction, and the lock tongue 23 can move up and down between a telescopic state and a retracted state relative to the first seat body 21. Preferably, the projection of the guide surface 12 onto the first plane is inclined to the moving direction of the first seat body 21, and the first plane is perpendicular to the horizontal plane and parallel to the moving direction of the first seat body 21. In this way, on the one hand, this inclined design makes it possible for the guide surface 12 to push the extended lock tongue 23 at a more appropriate angle when the projection of the lock tongue 23 onto the horizontal plane and the projection of the guide surface 12 onto the horizontal plane at least partially overlap and the lock tongue 23 and the guide surface 12 are against each other. During the door closing process, if the lock tongue 23 is extended prematurely due to misoperation, as the first door and window sash 6 continues to move toward the door closing position, the inclined guide surface 12 can accurately guide the lock tongue 23 to retract, thereby avoiding a direct collision between the lock tongue 23 and the lock box 1; and, the inclined guide surface 12 is designed so that the lock tongue 23 can more smoothly pass over the guide surface 12 after being pushed inward, and when the lock tongue 23 passes over the guide surface 12, it can be re-extended and enter the lock slot 11, thereby ensuring that the lock tongue 23 can complete the operation according to the normal locking process, thereby achieving effective locking of the first door and window sash 6.

[0060] Preferably, in this embodiment, the guide surface 12 may be an inclined plane or a curved surface, which may be selected according to actual needs and is not limited here.

[0061] like Figure 2 , Figure 7 and Figure 8 As shown, preferably, in this embodiment, the lock box 1 is further provided with a transversely arranged transition surface 13, the transition surface 13 is lower than the guide surface 12 in the vertical direction, the guide surface 12, the transition surface 13 and the lock groove 11 are arranged sequentially in the moving direction of the first seat body 21, when the projection of the lock tongue 23 on the horizontal plane and the projection of the guide surface 12 on the horizontal plane at least partially overlap and the lock tongue 23 and the guide surface 12 are against each other, the lock tongue 23 can contact the guide surface 12 and the transition surface 13 in sequence and finally enter the lock groove 11.

[0062] In this way, on the one hand, the guide surface 12, the transition surface 13 and the lock groove 11 are arranged in sequence in the moving direction of the first seat body 21, providing a staged guiding process for the lock tongue 23 to enter the lock groove 11. When the projection of the lock tongue 23 on the horizontal plane and the projection of the guide surface 12 on the horizontal plane at least partially overlap and abut against each other, the lock tongue 23 first contacts the guide surface 12, and the guide surface 12 guides the lock tongue 23 at a suitable angle to initially change the direction of movement and retract. Then, the lock tongue 23 contacts the transition surface 13, and the transition surface 13 is lower than the guide surface 12 in the vertical direction. Its gentle slope further guides the lock tongue 23 to adjust its posture, so that the lock tongue 23 can transition to the lock groove 11 position more smoothly. This staged guiding method avoids the problems of jamming and collision that may occur when the lock tongue 23 directly enters the lock groove 11, greatly improving the lock. The tongue 23 enters the lock groove 11 smoothly; on the other hand, the setting of the transition surface 13 plays a role of buffering transition. When the lock tongue 23 retracts under the guidance of the guide surface 12, the transition surface 13 can further slow down the movement speed of the lock tongue 23, so that the lock tongue 23 approaches the lock groove 11 in a gentler manner, which effectively reduces the risk of direct collision between the lock tongue 23 and the lock box 1, avoids damage to the mechanical structures of the lock tongue 23 and the lock box 1 caused by violent collision, and extends the service life of the lock. In addition, the coordinated use of the guide surface 12 and the transition surface 13 makes the force on the lock tongue 23 in the process of entering the lock groove 11 more uniform, reduces stress concentration, and the lock tongue 23 will not be subjected to excessive impact force at a certain moment, thereby protecting the key parts of the lock tongue 23 and the lock box 1, and improving the reliability and stability of the lock structure.

[0063] Preferably, in this embodiment, the lock structure further includes a first elastic member (not shown), which is connected to the lock tongue 23 by transmission; when the lock tongue 23 needs to be extended, the first elastic member can elastically drive the lock tongue 23 to finally move to the extended state; when the lock tongue 23 needs to be retracted, the first elastic member can elastically drive the lock tongue 23 to finally move to the retracted state. In this way, on the one hand, the elastic force provided by the first elastic member can ensure that the lock tongue 23 maintains a stable motion trajectory during the extension and retraction process, and when extended, the elastic force enables the lock tongue 23 to quickly and accurately reach the extended position, ensuring the reliable cooperation between the lock tongue 23 and the lock slot 11, and when retracted, the elastic force can also ensure that the lock tongue 23 completely returns to the retracted state, avoiding the subsequent problems caused by the lock tongue 23 not being completely retracted. This stable motion characteristic enhances the stability and reliability of the lock structure, and reduces the locking failure or safety hazard caused by the inaccurate position of the lock tongue 23; on the other hand, when the lock tongue 23 is impacted by external force during the extension or retraction process, the first elastic member can play a role in buffering and shock absorption. It can absorb part of the impact force, reduce the stress on the lock tongue 23 and other parts of the lock, and protect the lock structure from damage. For example, if a collision occurs when closing the door, the first elastic member can buffer the impact force on the lock tongue 23 and extend the service life of the lock.

[0064] like Figure 1 , Figure 2 and Figure 7 As shown, specifically, in this embodiment, the lock structure also includes a handle 8, and the main lock body 2 also includes a first locking rod 22. The handle 8 is used to be installed on the first door and window sash 6. The first locking rod 22 is used to slide up and down on the vertical frame arranged on the first door and window sash 6. The handle 8 and the first locking rod 22 are transmission-connected. The lock tongue 23 is connected to the end of the first locking rod 22 away from the handle 8. The first locking rod 22 can be driven to move up and down by operating the handle 8. Driven by the first locking rod 22, the lock tongue 23 can be switched between an extended state and a retracted state relative to the first seat body 21. In this way, on the one hand, the first locking rod 22 is slid up and down on the vertical frame of the first door and window sash 6, which makes full use of the limited space of the door and window sashes. This compact structural design ensures that the lock does not take up too much space during installation, and is convenient for coordination and installation with other door and window components, while also making the lock as a whole more compact and lightweight; on the other hand, the handle 8 is transmission-connected to the first locking rod 22, and this connection method can ensure that the operating action of the handle 8 is accurately transmitted to the first locking rod 22. The first locking rod 22 is slid up and down on the vertical frame of the first door and window sash 6, and its movement trajectory is stable and can be precisely controlled. Therefore, when the handle 8 is operated, the first locking rod 22 can move up and down in an expected manner, thereby driving the lock tongue 23 to accurately switch between the extended state and the retracted state.

[0065] Specifically, the first elastic member is disposed between the handle 8 and the first locking rod 22 . The first elastic member may be, but is not limited to, a retaining spring or a torsion spring, etc., which may be selected according to actual needs.

[0066] like Figures 1 to 8 As shown, in addition, the present embodiment also provides a double-door system, including the lock structure as above, and also including a first track 4, a second track 5, a first door and window sash 6 and a second door and window sash 7. The first door and window sash 6 is slidably arranged on the first track 4, and the second door and window sash 7 is slidably arranged on the second track 5. The lock box 1 is arranged on the first track 4, and the lock tongue 23 is movably arranged on the first door and window sash 6 and can move synchronously in the horizontal direction with the first door and window sash 6. The second seat body 31 is arranged on the second door and window sash 7 and can move synchronously in the horizontal direction with the second door and window sash 7. The angle between the extension directions of the first track 4 and the second track 5 is between 90-180. In this way, this design enables the double-door system to adapt to door openings of different shapes and sizes. Whether it is a right-angle door opening or an oblique door opening, the double-door system can be installed by adjusting the track angle, thereby improving the versatility and flexibility of the system.

[0067] Specifically, the rod portion 321 includes a first connecting rod 3211 and a second connecting rod 3212 connected to each other, the hook portion 322 is connected to an end of the second connecting rod 3212 away from the first connecting rod 3211, and the slot 3221 is formed at the intersection between the hook portion 322 and the second connecting rod 3212. The angle between the first connecting rod 3211 and the second connecting rod 3212 can be designed as needed to adapt to different track angles. In this way, on the one hand, in actual installation, the shapes and sizes of door openings of different buildings are different, resulting in different track angles. This can be flexibly adjusted Due to the angle design, the rod portion 321 can perfectly adapt to various track angles, ensuring that the double-door system can operate normally in different installation environments. On the other hand, when the track angle changes, by adjusting the angle design of the first connecting rod 3211 and the second connecting rod 3212, the hook portion 322 can always remain in a suitable position. In this way, during the sliding process of the door and window sashes, the hook portion 322 can accurately engage or separate with the lock tongue 23, ensuring smooth and accurate opening and closing of the door and window sashes, thereby improving the overall performance and stability of the double-door system.

[0068] like Figure 1 and Figure 2 As shown, specifically, in this embodiment, the included angle between the extension directions of the first track 4 and the second track 5 is 180 degrees, and the first track 4 and the second track 5 extend on the same straight line.

[0069] Specifically, in the present embodiment, the first track 4 and the second track 5 are both upper tracks; and in some other embodiments, the first track 4 and the second track 5 may also be both lower tracks.

[0070] Embodiment 2

[0071] like Fig. 9 , Fig.10 and Fig.11 As shown, the main difference between this embodiment and the first embodiment is that the angle between the extension directions of the first track 4 and the second track 5 is an obtuse angle, and the angle between the first connecting rod 3211 and the second connecting rod 3212 is designed as needed to adapt to the angle between the first track 4 and the second track 5.

[0072] In summary, the lock structure and the double-door system including the lock structure disclosed in the present invention can at least bring the following beneficial technical effects:

[0073] 1) When the lock tongue 23 is extended in advance due to an erroneous operation, dynamic avoidance can be achieved by setting the guide surface 3222, and the guide contact between the hook portion 322 and the lock tongue 23 can be achieved, thereby eliminating the rigid collision between the hook portion 322 and the lock tongue 23 and avoiding metal collision noise. Moreover, even if the lock tongue 23 is extended in advance due to an erroneous operation, the first door and window sash 6 and the second door and window sash 7 can be locked at the same time;

[0074] 2) The second elastic member 33 makes the operation of the entire lock structure smoother. During the door closing process, even if the lock tongue 23 is extended in advance, the hook portion 322 can automatically complete the rotation and reset action due to the action of the second elastic member 33, without the user having to perform additional operation intervention. This not only simplifies the door closing operation, but also improves the user experience, making the door opening and closing action of the door opening system easier and more natural.

[0075] 3) When the lock tongue 23 is extended in advance due to misoperation, the guide surface can push the extended lock tongue 23 to retract it, effectively preventing the mechanical structure from being damaged by collision. Moreover, when the lock tongue 23 is pushed inward by the guide surface 12 and passes over the guide surface 12, the lock tongue 23 can be extended again and enter the lock groove 11, thereby achieving effective locking of the first door and window sash 6 and avoiding the problem of being unable to lock due to the early extension of the lock tongue 23.

[0076] 4) The guide surface 12, the transition surface 13 and the lock slot 11 are arranged in sequence in the moving direction of the first seat body 21, providing a staged guiding process for the lock tongue 23 to enter the lock slot 11. This staged guiding method avoids problems such as jamming and collision that may occur when the lock tongue 23 directly enters the lock slot 11, and greatly improves the smoothness of the lock tongue 23 entering the lock slot 11.

[0077] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A lock structure for a double door system, characterized in that: include: A lock box (1) is used to be arranged on a track, and the lock box (1) is provided with a lock slot (11); A lock tongue (23) is arranged on the first door and window sash (6) for upward and downward movement, and the lock tongue (23) can move upward and downward between a locking position and an unlocking position; when in the locking position, the lock tongue (23) extends out and enters the lock slot (11); when in the unlocking position, the lock tongue (23) retracts inward and separates from the lock slot (11); A second seat body (31) is used to be arranged on the second door and window sash (7); A second locking rod (32) is hingedly arranged on the second seat body (31), and the second locking rod (32) has a hook portion (322), and the hook portion (322) can move between a first position and a second position relative to the locking tongue (23); when the hook portion (322) is in the second position, the locking tongue (23) can move to a locking position to be locked and fixed with the hook portion (322); The hook portion (322) further comprises a guide surface (3222). When the hook portion (322) is in the first position and the lock tongue (23) is in the locked position, the guide surface (3222) and the lock tongue (23) are disposed against each other. When the hook portion (322) continues to move toward the second position, the lock tongue (23) can push the guide surface (3222) to enable the second locking rod (32) to rotate relative to the second seat body (31) until the guide surface (3222) passes over the lock tongue (23). Then, the second locking rod (32) can be reset and rotated to enable the hook portion (322) to reach the second position and be engaged with the lock tongue (23).

2. The lock structure according to claim 1, characterized in that: The lock structure further comprises a second elastic member (33), wherein the second elastic member (33) is arranged between the second seat body (31) and the second locking rod (32), and the second elastic member (33) is configured to drive the second locking rod (32) to reset and rotate so that the hook portion (322) reaches the second position.

3. The lock structure according to claim 1, characterized in that: The second seat body (31) moves linearly in a horizontal direction, and the projection of the guide surface (3222) onto the horizontal plane is inclined to the moving direction of the second seat body (31).

4. The lock structure according to claim 3, characterized in that: The second locking rod (32) further comprises a rod portion (321), the hook portion (322) is connected to the rod portion (321), the hook portion (322) comprises a slot (3221), the slot (3221) is formed at the intersection of the hook portion (322) and the rod portion (321), the guide surface (3222) and the slot (3221) are arranged opposite to each other, and when the hook portion (322) is in the second position and the locking tongue (23) is in the locking position, the slot (3221) is engaged with the locking tongue (23).

5. The lock structure according to claim 4, characterized in that: The guide surface (3222) comprises a first arc surface (32221) and a guide inclined surface (32223); the first arc surface (32221) is convexly arranged and connected between the card slot (3221) and the guide inclined surface (32223); when the guide surface (3222) and the locking tongue (23) are arranged against each other, the locking tongue (23) contacts the guide inclined surface (32223) and the first arc surface (32221) in sequence.

6. The lock structure according to claim 5, characterized in that: The guide surface (3222) also includes a second arc surface (32222), the second arc surface (32222), the guide inclined surface (32223) and the first arc surface (32221) are connected in sequence, and the second arc surface (32222) is connected to a side of the guide inclined surface (32223) away from the card slot (3221).

7. The lock structure according to any one of claims 1 to 5, characterized in that: The lock box (1) is provided with a guide surface (12); when the projection of the lock tongue (23) onto the horizontal plane and the projection of the guide surface (12) onto the horizontal plane at least partially overlap, the lock tongue (23) in an extended state and the guide surface (12) abut against each other, and when the lock tongue (23) continues to move toward the lock slot (11), the guide surface (12) can push the lock tongue (23) in the extended state to make the lock tongue (23) retract until the lock tongue (23) passes over the guide surface (12), and then the lock tongue (23) can be extended again and enter the lock slot (11).

8. The lock structure according to claim 7, characterized in that: The lock structure also includes a first seat body (21), the first seat body (21) is used to be arranged on a first door or window sash (6), the locking tongue (23) is movably arranged on the first seat body (21) up and down, the locking tongue (23) can move up and down between a telescopic state and a retracted state relative to the first seat body (21), the first seat body (21) can move linearly in a horizontal direction, the projection of the guide surface (12) onto the first plane is inclined to the moving direction of the first seat body (21), and the first plane is perpendicular to the horizontal plane and parallel to the moving direction of the first seat body (21).

9. The lock structure according to claim 7, characterized in that: The lock structure further comprises a first elastic member, which is transmission-connected to the lock tongue (23); when the lock tongue (23) is required to be extended, the first elastic member can elastically drive the lock tongue (23) to finally move to an extended state; when the lock tongue (23) is required to be retracted, the first elastic member can elastically drive the lock tongue (23) to finally move to a retracted state.

10. The double door system is characterized by: The invention comprises a lock structure as claimed in any one of claims 1 to 9, and further comprises a first track (4), a second track (5), a first door and window sash (6) and a second door and window sash (7), wherein the first door and window sash (6) is slidably arranged on the first track (4), the second door and window sash (7) is slidably arranged on the second track (5), the lock box (1) is arranged on the first track (4), the lock tongue (23) is movably arranged on the first door and window sash (6) and can move synchronously with the first door and window sash (6) in the horizontal direction, the second seat (31) is arranged on the second door and window sash (7) and can move synchronously with the second door and window sash (7) in the horizontal direction, and the angle between the extension directions of the first track (4) and the second track (5) is between 90 and 180.

Images