A linkage locking structure of a sky and earth lock

Abstract

A linkage locking structure of a sky and earth lock includes a main lock and a secondary lock, wherein the main lock is provided with a driving member, the secondary lock includes a secondary lock box, and a secondary lock core arranged in the secondary lock box, the main lock core and the secondary lock core are connected and transmitted via a linkage assembly, the secondary lock core includes a vertically arranged lock pin assembly, and a horizontally arranged lock block assembly, the linkage assembly is respectively connected and synchronously moved with the lock pin assembly and the lock block assembly, and the lock pin assembly and the lock block assembly can respectively form a locking fit with an external locking accessory. In the present invention, the main lock and the secondary lock are linked and can be locked and unlocked at the same time, wherein the lock pin assembly and the lock block assembly are arranged in the secondary lock, so that a single lock body has multiple locking structures in different directions, thereby greatly improving the locking effect.

Description

Technical Field

[0001] The invention relates to the field of lock structure design, in particular to a linkage locking structure of a sky and earth lock. Background Art

[0002] In order to improve the anti-theft performance of existing home doors, while being equipped with a main lock, a top and bottom lock is added to increase the locking points of the home doors. Generally speaking, the top and bottom locks and the main lock are arranged on the same side of the door leaf and are connected by a top and bottom rod. Among them, the one located above the main lock is called the sky lock, and the one located below the main lock is called the ground lock. Their working principles are generally as follows: when opening the door, use the key to open the lock core, the square tongue retracts, press the handle down at a certain angle (such as 45°), and the oblique tongue retracts. At the same time, the synchronous linkage mechanism (generally a connecting rod mechanism or a multi-rod mechanism) used to link the handle with the sky and earth locks will drive the sky / ground rods to retract at the same time, so that the sky and earth locks withdraw from the lock holes of the upper and lower door frames. The door is opened, and after the handle is released, the oblique tongue extends out, and under the action of the reset spring, the handle can return to its initial position (generally a horizontal position); when locking the door, lift the handle at a certain angle (such as 45°), and the synchronous linkage mechanism drives the sky / ground rods to extend at the same time, so that the sky and earth locks are inserted into the lock holes of the upper and lower door frames. Then use the key or operate the hand button indoors to lock the lock core, the square tongue also extends out to lock, the door is locked, and after the handle is released, the handle can return to its initial position again under the action of the reset spring. Since when the door is locked, it will be restricted by the ceiling lock, ground lock, square tongue and oblique tongue at the same time, the security is greatly improved.

[0003] However, the locking structure in the existing lock is relatively simple, and can only achieve the traditional one-way locking effect, which is easy to be cracked by someone with ulterior motives. Therefore, there is an urgent need for a lock that can integrate multiple locking structures in different directions and can be linked to each other for easy unlocking to meet higher market demands. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a linkage locking structure of a sky and earth lock.

[0005] The technical solution to the technical problem solved by the present invention is: a linkage locking structure of a sky and earth lock, comprising a main lock and a secondary lock, the main lock is provided with a driving member, the secondary lock comprises a secondary lock box, and a secondary lock core arranged in the secondary lock box, the main lock core and the secondary lock core are connected and transmitted via a linkage assembly, the secondary lock core comprises a vertically arranged lock pin assembly, and a horizontally arranged lock block assembly, the linkage assembly is respectively transmission-connected to the lock pin assembly and the lock block assembly and moves synchronously, and the lock pin assembly and the lock block assembly can respectively form a locking fit with an external locking accessory.

[0006] Preferably, the linkage assembly includes a drive plate arranged in the secondary lock box, and a linkage rod connected between the drive plate and the primary lock.

[0007] Preferably, a guide groove is provided on the driving plate, a guide piece is protrudingly provided in the auxiliary lock box, and the guide piece is inserted into the guide groove.

[0008] Preferably, the locking block assembly comprises a first transmission member arranged vertically, a second transmission member arranged horizontally, and a locking block arranged horizontally in accordance with a transmission sequence, and the locking block is provided with a locking opening adapted to an external locking accessory;

[0009] The input end of the first transmission member can abut against and transmit to the linkage assembly, the output end of the first transmission member can abut against and transmit to the input end of the second transmission member, the output end of the second transmission member can abut against and transmit to the locking block, and the locking block extends out of the secondary lock box;

[0010] The driving member is operated to drive the locking block to move relative to the auxiliary lock box, so that the position of the locking opening changes and the locking and unlocking functions of the locking block assembly are realized.

[0011] Preferably, the secondary lock box includes a support frame, the first transmission member is rotatably connected to the support frame via a first rotating shaft, the second transmission member is rotatably connected to the support frame via a second rotating shaft, the locking block is rotatably connected to the support frame via a third rotating shaft, and a reset torsion spring is provided on the first rotating shaft and / or the second rotating shaft and / or the third rotating shaft.

[0012] Preferably, a return torsion spring is sleeved on the third rotating shaft, a position retaining protrusion is convexly provided on the second transmission member, and a receiving groove is provided on the locking block; when the position retaining protrusion is snapped into the receiving groove, the locking block is in a locked state, and the return torsion spring is in a deformed state.

[0013] Preferably, a vertical limit baffle is provided on the support frame, and the vertical limit baffle can abut against the locking block to form a limit fit.

[0014] Preferably, the locking pin assembly includes a limiting portion protruding from the driving plate, a locking pin rod transmission-connected to the limiting portion, a driving spring arranged between the locking pin rod and the auxiliary lock box, and a locking socket opened on the auxiliary lock box for external locking accessories to enter and exit.

[0015] Preferably, a limit plate is fixedly provided in the auxiliary lock box, a U-shaped limit groove is provided on the limit plate, a transmission groove is provided on the lock pin rod, and the limit part passes through the U-shaped limit groove and is inserted into the transmission groove.

[0016] Preferably, the master lock comprises a master lock box, a master lock core arranged in the master lock box, and the driving member, and the driving member is controllably connected to the master lock core.

[0017] The beneficial effects of the present invention are: 1. The main lock and the secondary lock are linked to each other and can be locked and unlocked at the same time; 2. A lock pin assembly and a lock block assembly are provided in the secondary lock, so that a single lock body has multiple locking structures in different directions, thereby greatly improving the locking effect; 3. The main lock core, as well as the lock pin assembly and the lock block assembly in the secondary lock can be controlled simultaneously through the same driving member to achieve the synchronous linkage effect of multiple locks; 4. The sky and earth lock structure provided by the present invention is mainly used in RVs, and can effectively withstand the bumps during driving and various requirements of outdoor applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a structural diagram of the master lock.

[0020] Figure 3 It is a schematic diagram of the structure of the secondary lock.

[0021] Figure 4 This is an exploded view of the secondary lock.

[0022] Figure 5 It is a schematic diagram of the internal structure of the secondary lock.

[0023] Figure 6 This is a schematic diagram of the internal structure of the secondary lock from another angle.

[0024] Figure 7 It is a structural schematic diagram of the first transmission member.

[0025] Figure 8 Schematic diagram of the structure of the second transmission member.

[0026] Fig. 9 It is a structural schematic diagram of the locking block.

[0027] Fig.10 It is a structural diagram of the linkage piece.

[0028] Fig.11 It is an assembly diagram of the first transmission member, the second transmission member, the locking block and the linkage plate. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Reference Figures 1 to 11 A linkage locking structure of a sky and earth lock comprises a main lock 1 and a secondary lock 2. The main lock 1 is provided with a driving member 9. The secondary lock 2 comprises a secondary lock box 3 and a secondary lock core 4 arranged in the secondary lock box 3. The main lock core and the secondary lock core 4 are connected and transmitted via a linkage assembly 5. The secondary lock core 4 comprises a vertically arranged lock pin assembly 6 and a horizontally arranged lock block assembly 7. The linkage assembly 5 is respectively connected to the lock pin assembly 6 and the lock block assembly 7 for transmission and synchronous movement, and the lock pin assembly 6 and the lock block assembly 7 can respectively form a locking fit with an external locking accessory 8.

[0031] Preferably, there are two secondary locks 2, one above the main lock 1 and one below the main lock 1, so that the force is more balanced during use and the locking is more reliable.

[0032] The driving member 9 is preferably a door handle, but is not limited to a door handle, and may also be a pull ring, a key, a slider and other components.

[0033] The components of the linkage assembly 5 are similar to those of the prior art. The linkage assembly 5 involved in the present invention includes a drive plate 10 disposed in the secondary lock box 3, and a linkage rod 11 connected between the drive plate 10 and the main lock 1. The difference from the prior art lies in the specific structure, usage and working principle of each component, specifically: in order to enable the linkage assembly 5 to move smoothly and accurately along the predetermined trajectory route and ensure long-term stable and reliable operation, a guide groove 12 is provided on the drive plate 10, and a guide member 13 is protruding from the secondary lock box 3, and the guide member 13 is inserted into the guide groove 12. The size of the guide groove 12 is larger than the guide member 13, so the guide member 13 plays a limiting guiding role, so that the drive plate 10 can move along the trajectory of the guide groove 12 when subjected to force. In addition, the structures of the corresponding parts of the linkage assembly 5, the lock pin assembly 6 and the lock block assembly 7 will be explained below and will not be repeated here separately.

[0034] In the present invention, multiple locking structures in different directions are integrated into the secondary lock 2, that is, the above improvements are achieved through the locking block assembly 7 and the locking pin assembly 6. Specifically: the locking block assembly 7 includes a vertically arranged first transmission member 14, a horizontally arranged second transmission member 15, and a horizontally arranged locking block 16 in sequence according to the transmission sequence, and the locking block 16 is provided with a locking opening 17 adapted to the external locking accessory 8;

[0035] The input end 18 of the first transmission member 14 can abut against and transmit to the linkage assembly 5, the output end 19 of the first transmission member 14 can abut against and transmit to the input end 20 of the second transmission member 15, the output end 21 of the second transmission member 15 can abut against and transmit to the locking block 16, and the locking block 16 extends out of the secondary lock box 3;

[0036] The driving member 9 is operated to drive the locking block 16 to move relative to the auxiliary lock box 3 , so that the position of the locking opening 17 changes and the locking and unlocking functions of the locking block assembly 7 are realized.

[0037] Regarding the supporting structure of the lock block assembly 7, it is preferred that: the secondary lock box 3 includes a support frame 22, the first transmission member 14 is rotatably connected to the support frame 22 via the first rotating shaft 23, the second transmission member 15 is rotatably connected to the support frame 22 via the second rotating shaft 24, the locking block 16 is rotatably connected to the support frame 22 via the third rotating shaft 25, and a reset torsion spring 26 is provided on the first rotating shaft 23 or / and the second rotating shaft 24 or / and the third rotating shaft 25. The reset torsion spring 26 plays the role of resetting the relevant components before or after movement, and the specific setting position and quantity can be selected and adjusted according to actual needs.

[0038] Preferably, the first transmission member 14 and the second transmission member 15 are boomerang-shaped, so that under the premise of ensuring a good transmission effect between each other, the spatial layout can be more reasonable, that is, a smaller installation space is occupied, and unnecessary interference will not occur between the various components, so as to ensure the normal operation of the overall function.

[0039] A preferred arrangement of the reset torsion spring is that a reset torsion spring 26 is sleeved on the third rotating shaft 25, a position-maintaining protrusion 27 is convexly provided on the second transmission member 15, and a receiving groove 28 is provided on the locking block 16; when the position-maintaining protrusion 27 is inserted into the receiving groove 28, the locking block 16 is in a locked state, and the reset torsion spring 26 is in a deformed state. With this preferred solution, when the locking block 16 is not locked, the corresponding reset torsion spring 26 is not deformed either, so the deformation time of the reset torsion spring 26 can be greatly shortened to increase the overall service life; when locked, the force of the reset torsion spring 26 on the locking block 16 after deformation is balanced with the force of the second transmission member 15 on the locking block 16, so that the locking block 16 can be maintained in the locked position.

[0040] In order to better limit the moving position of the locking block 16, a vertical limit baffle 29 is provided on the support frame 22, and the vertical limit baffle 29 can abut against and form a limit fit with the locking block 16. That is, when in use, when the locking block assembly 7 loses the pressure from the second transmission member 15, it performs a reset movement under the action of the reset torsion spring 26. Since the reset torsion spring 26 has a large force, the locking block 16 may be reset excessively and leave the normal position. Therefore, the maximum angle of the reset movement of the locking block 16 is effectively limited by the provision of the vertical limit baffle 29.

[0041] Regarding the supporting structure of the lock pin assembly 6, it is preferred that: the lock pin assembly 6 includes a limit portion 30 protruding from the driving plate 10, a lock pin rod 31 drivingly connected to the limit portion 30, a driving spring 32 arranged between the lock pin rod 31 and the auxiliary lock box 3, and a locking socket 33 provided on the auxiliary lock box 3 for the external locking accessory 8 to enter and exit. Preferably, the lower part of the lock pin rod 31 has a wedge-shaped guide surface 34, that is, the external locking accessory 8 contacts the guide surface 34 at the initial insertion stage and can push the lock pin rod 31 upwards. After the external locking accessory 8 is inserted to a certain depth, the lock pin rod 31 is snapped into the lock groove on the external locking accessory under the action of the driving spring 32 to achieve the locking function.

[0042] Regarding the further structure of the lock pin assembly 6, a limit plate 35 is fixedly disposed in the secondary lock box 3, a U-shaped limit groove 36 is formed on the limit plate 35, a transmission groove 37 is formed on the lock pin rod 31, and the limit portion 30 passes through the U-shaped limit groove 36 and is inserted into the transmission groove 37. By setting the limit plate 35, the maximum displacement of the lock pin rod 31 is limited to prevent it from being out of the normal position, so as to ensure the normal operation of the relevant components.

[0043] In the present invention, the main lock 1 also has a locking function. In short, the main lock 1 includes a main lock box 38, a main lock cylinder 39 disposed in the main lock box 38, and the driving member 9. The driving member 9 is control-connected to the main lock cylinder 39. During operation, the locking and unlocking functions of the main lock cylinder 39 can be realized by controlling the driving member 9.

[0044] The working principle of the present invention is: install the main lock 1 and the secondary lock 2 on the corresponding parts (such as the door) respectively, and install the external locking accessories 8 on the correct parts (such as the door frame) at the same time; when the door is closed with the door frame, the main lock 1 and the secondary lock 2 are in the locked state. When the door needs to be opened (i.e., switched from the locked state to the unlocked state), operate the driving member 9 (generally the door handle), and the driving member 9 drives the driving plate 10 to move through the linkage rod 11. The movement of the driving plate 10 can simultaneously drive the lock pin assembly 6 and the lock block assembly 7 to unlock, respectively: the lower end of the driving plate 10 abuts against and transmits the first transmission member 14, and then the first transmission member drives the second transmission member 15 to move, and the position-keeping protrusion 27 on the second transmission member 15 is separated from the receiving groove 28 on the lock block 16. At this time, the second transmission member 15 is in the position of the lock block 16. The holding function fails. Under the reset force of the reset torsion spring 26, the locking block 16 rotates from the locked position to the unlocked position. At this time, the external locking accessory 8 originally located in the locking port 17 is also driven to pop out, so that the lock block assembly 7 is switched to the unlocked state; at the same time, the driving plate 10 applies pressure to the external locking accessory inserted into the locking socket 33, so that it withdraws and moves out of the locking socket 33, so that the lock tongue assembly is switched to the unlocked state, completing the unlocking of the secondary lock 2 (the sky and the earth lock), and cooperating with the unlocking of the main lock core 39, the door can be separated from the door frame.

[0045] Release the driving member 9 and force the door and the door frame to close. The external locking accessories on the door frame cooperate with the lock tongue assembly and the lock block assembly 7 to switch it from the unlocked state to the locked state. The movement changes of the components in this process are opposite to those during the unlocking process, and will not be repeated here.

[0046] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A linkage locking structure of a sky and earth lock, comprising a main lock (1) and a secondary lock (2), wherein the main lock (1) is provided with a driving member (9), the secondary lock (2) comprises a secondary lock box (3), and a secondary lock core (4) arranged in the secondary lock box (3), the main lock core (39) and the secondary lock core (4) are connected and driven by a linkage assembly (5), characterized in that: The master lock (1) comprises a master lock box (38), a master lock core (39) arranged in the master lock box (38), and the driving member (9), wherein the driving member (9) is controllably connected to the master lock core (39); The auxiliary lock core (4) comprises a lock pin assembly (6) arranged vertically and a lock block assembly (7) arranged horizontally, the linkage assembly (5) is respectively connected to the lock pin assembly (6) and the lock block assembly (7) in a transmission manner and moves synchronously, and the lock pin assembly (6) and the lock block assembly (7) are respectively capable of forming a locking fit with an external locking accessory (8); The linkage assembly (5) comprises a driving plate (10) arranged in the secondary lock box (3), and a linkage rod (11) connected between the driving plate (10) and the main lock (1); The driving plate (10) is provided with a guide groove (12), the auxiliary lock box (3) is provided with a guide member (13) protruding therein, and the guide member (13) is inserted into the guide groove (12); The locking block assembly (7) comprises, in sequence according to a transmission sequence, a first transmission member (14) arranged vertically, a second transmission member (15) arranged horizontally, and a locking block (16) arranged horizontally, wherein the locking block (16) is provided with a locking opening (17) adapted to an external locking accessory (8); The input end of the first transmission member (14) can abut against and transmit the linkage assembly (5), the output end of the first transmission member (14) can abut against and transmit the input end of the second transmission member (15), the output end of the second transmission member (15) can abut against and transmit the locking block (16), and the locking block (16) extends out of the secondary lock box (3); the driving member (9) is operated to drive the locking block (16) to move relative to the secondary lock box (3), so that the position of the locking port (17) changes and the locking and unlocking functions of the locking block assembly (7) are realized; the locking pin assembly (6) comprises a limiting portion (30) protruding from the driving plate (10), a locking pin rod (31) drivingly connected to the limiting portion (30), a driving spring (32) arranged between the locking pin rod (31) and the secondary lock box (3), and a locking socket (33) provided on the secondary lock box (3) for the external locking accessory (8) to enter and exit.

2. The linkage locking structure of the sky and earth lock according to claim 1 is characterized in that: The auxiliary lock box (3) includes a support frame (22), the first transmission member (14) is rotatably connected to the support frame (22) via a first rotating shaft (23), the second transmission member (15) is rotatably connected to the support frame (22) via a second rotating shaft (24), the locking block (16) is rotatably connected to the support frame (22) via a third rotating shaft (25), and a reset torsion spring (26) is provided on the first rotating shaft (23) and / or the second rotating shaft (24) and / or the third rotating shaft (25).

3. The linkage locking structure of the sky and earth lock according to claim 2 is characterized in that: The third rotating shaft (25) is sleeved with a return torsion spring (26), the second transmission member (15) is convexly provided with a position retaining protrusion (27), and the locking block (16) is provided with a receiving groove (28); when the position retaining protrusion (27) is snapped into the receiving groove (28), the locking block (16) is in a locked state, and the return torsion spring (26) is in a deformed state.

4. The linkage locking structure of the sky and earth lock according to claim 2 is characterized in that: The support frame (22) is provided with a vertical limit baffle (29), and the vertical limit baffle (29) can abut against the locking block (16) to form a limit fit.

5. The linkage locking structure of the sky and earth lock according to claim 1 is characterized in that: A limiting plate (35) is also fixedly arranged in the auxiliary lock box (3), a U-shaped limiting groove (36) is provided on the limiting plate (35), a transmission groove (37) is provided on the lock pin rod (31), and the limiting portion (30) passes through the U-shaped limiting groove (36) and is inserted into the transmission groove (37).

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