Child lock switch structure of a door lock, the door lock, the door and the anti-lock method

Abstract

Child lock switch structure of a door lock, the door lock, the door and the anti-lock method. The child lock switch structure includes: a handle joint and a limit rod; when the limit rod extends into the limit empty slot, the downward pressing and positioning end of the limit empty slot is positioned by the part of the limit rod that extends in, so as to limit the handle joint to only rotate in the direction away from the limit rod of the downward pressing and positioning end, and to reset after rotating in this direction. The door lock includes: a lock body, a handle member and a door lock panel; this child lock switch structure is installed in the door lock panel; a door, and the above door lock is installed on the door main body. This solution is for the child lock switch structure of the door lock. By setting a relatively rotatable limit empty slot on the handle joint; when the child lock is opened, the handle member cannot be pressed down to open the door, but when the handle member is lifted, the main lock tongue extending out of the lock body is used to anti-lock the door; when the child lock is closed, the handle member can be used normally. When the handle member is lifted, the main lock tongue extends out to achieve anti-lock, and when the handle member is pressed down, the door is opened; this solution provides the advantages of simple structure and high safety.

Description

Technical Field

[0001] The present invention relates to the technical field of door locks, and in particular, to a child lock switch structure of a door lock, the door lock, the door, and an anti-lock method thereof. Background Art

[0002] In the existing door locks, when the child lock switch is in the open state, if the door lock structure has a free-turning handle, when the user lifts and / or presses down the handle at this time, the door lock has no functional response, that is, it cannot perform functions such as opening the door or anti-locking, the functions are single, and the structure of such door locks is complex, the assembly process is numerous, and the cost is high; in addition, if the door lock structure has a fixed handle, the handle cannot be lifted and pressed down. For example, in the Chinese invention patents with the application numbers CN201822041264.8 or CN201320210378.5, for the door lock structures involved in these door lock structures or patents, if the handle needs to be lifted to anti-lock the door lock, the child lock needs to be closed first to make the handle in the normal state before the handle can be lifted to achieve anti-locking of the door lock. After anti-locking, the child lock needs to be opened again, which is inconvenient for the user.

[0003] For these two types of door locks with child lock structures, the operations during the user's use are extremely inconvenient, which does not conform to the concept of modern intelligent door locks bringing convenience to users, and the user experience is not good. Summary of the Invention

[0004] In order to solve the technical defects that the existing door locks with child lock structures have single functions, complex structures, inconvenient operation and use, and poor experience, the purpose of the present invention is to provide a child lock switch structure of a door lock. When the limiting rod of the child lock extends into the limiting slot, the main lock tongue can still be driven and controlled to extend by rotating the handle joint. The door lock containing this child lock structure is installed on the door. In the open state of the child lock, it can not only limit the opening of the door, but also rotate the handle to anti-lock, improving the functions and use convenience of modern door locks.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A child lock switch structure of a door lock, comprising: a handle joint and a limiting rod;

[0007] The handle joint includes a disc body, which can respectively connect the handle part of the door lock and the main lock tongue to the disc body to realize that rotating the handle part can drive and control the extension and retraction of the main lock tongue;

[0008] A limiting slot is provided on the disc surface of the disc body, and the two ends of the limiting slot are respectively a pressing position end and a lifting position end;

[0009] One end of the limiting rod is aligned with the limiting slot; and at least part of the limiting rod can be slid in and out of the limiting slot adjustably;

[0010] When at least a part of the limiting rod extends into the limiting empty slot, the downward pressing and positioning end of the limiting empty slot is positioned by the part of the limiting rod that extends in, so as to limit the handle joint to only rotate in the direction away from the limiting rod of the downward pressing and positioning end and to reset after rotating in this direction; and, the rotatable angle of the handle joint in this direction can at least transmit and control the extension of the main lock tongue.

[0011] Preferably, when at least a part of the limiting rod extends into the limiting empty slot, the downward pressing and positioning end of the limiting empty slot being positioned by the part of the limiting rod that extends in is the child lock open state;

[0012] In the child lock open state, the direction in which the handle joint is restricted to only rotate is the direction in which the handle part is lifted and rotated.

[0013] Furthermore, it further includes a lock case and an elastic reset assembly;

[0014] A first limiting platform and a second limiting platform are arranged on the inner side surface of the lock case;

[0015] The elastic reset assembly includes a torsion spring and two protruding levers; the torsion spring is provided with two extending ends; the two protruding levers are respectively arranged on the disk surface of the disk body;

[0016] After the torsion spring is screwed to store elastic potential energy, its two extending ends are respectively clamped and limited below the first limiting platform and below the second limiting platform;

[0017] The handle joint is rotatably installed on the lock case and is located within the circle of the torsion spring; and the two protruding levers are respectively located above the two extending ends of the torsion spring;

[0018] When the handle joint is rotated, it can press against one of the protruding levers of the extending ends, and it drives the pressed extending end to increase the elastic potential energy of the torsion spring, and can reset the handle joint to the position before rotation.

[0019] According to some embodiments of the present invention, at least one of the two protruding levers is detachably arranged on the disk surface of the disk body; at least one of the protruding levers is disassembled, the handle joint is rotated, and then the disassembled protruding lever is installed in place, and the handle part can be reversely installed;

[0020] The limiting empty slot includes a first limiting empty slot and a second limiting empty slot; moreover, the limiting rod can be slid in and out adjustably in the two installation directions of the handle part to respectively correspond to the first limiting empty slot or the second limiting empty slot.

[0021] Further, a rotation limiting portion is provided on the inner side surface of the lock housing, and the rotation limiting portion is disposed on the rotation path of the convex lever for limiting the rotation stroke of the convex lever so as to limit the rotation angle of the handle joint.

[0022] Further, it further includes: a control mechanism, which includes a control operation portion and a connection assembly;

[0023] The control operation portion is connected to the limiting rod through the connection assembly to control the limiting rod to slidably enter and exit the limiting slot adjustably.

[0024] Further, it further includes: a positioning elastic member and a switch base;

[0025] The limiting rod is slidably disposed in the switch base adjustably;

[0026] The positioning elastic member is installed on the switch base and is located on the side of the limiting rod; the positioning elastic member has an arc end face with elastic deformation;

[0027] The limiting rod is provided with a positioning chuck; when the limiting rod extends into and disengages from the limiting slot, the positioning chuck passes through the arc end face and moves from one side of the arc end face to the other side of the arc end face.

[0028] The present invention also discloses a door lock, which includes: a lock body, a handle member, and a door lock panel;

[0029] The above-mentioned child lock switch structure is installed in the door lock panel;

[0030] The handle member is installed and connected to the handle joint and is located on the front surface of the door lock panel;

[0031] The lock body is connected to the handle joint through a transmission assembly, and rotating the handle member drives and controls the lock tongue in the lock body to extend or retract;

[0032] Wherein, the lock body includes the above-mentioned main lock tongue.

[0033] Further, the lock body includes a latch, a main lock tongue, and a deadbolt;

[0034] The door lock further includes a deadbolt control mechanism for controlling the opening and closing of the deadbolt.

[0035] The present invention also discloses a door, which includes: a door main body and the above-mentioned door lock; the door lock is installed on the door main body.

[0036] The present invention also discloses a method for locking a door lock. The door lock includes a child lock and a rotating handle member. When the child lock is in the open state, the handle member is restricted from being pressed down and rotated, but the handle member can be lifted to lock the door lock.

[0037] Advantages of the present invention:

[0038] This solution is a child lock switch structure for a door lock, which has a simple structure, is easy to install, reduces costs while increasing functions. By providing a limiting empty groove with a certain arc on the handle joint; the limiting rod is aligned with the limiting empty groove and can slide in and out of the limiting empty groove adjustably. When the child lock of this proposal is in the open state, that is, when one end of the limiting rod is aligned with the limiting empty groove and is adjusted to extend into the limiting empty groove, the downward pressing and clamping end of the limiting empty groove abuts against one side of the limiting rod and is clamped by the limiting rod, thereby restricting the handle joint from rotating in the direction of the limiting rod; at the same time, to solve the technical problems of the existing child locks, this proposal widens the arc of the limiting empty groove to provide a travel space for the limiting rod, so as to limit the handle joint to only rotate in the direction away from the limiting rod of the downward pressing and clamping end and to reset after rotating in this direction; at the same time, when the handle joint rotates in this direction, it can drive and control the main lock tongue to extend.

[0039] Therefore, when the door lock with this child lock structure is installed on the door, in the state where the child lock is open, the handle can be rotated in the above direction to drive and control the main lock tongue to extend to achieve locking. It brings a new operation function for users to use the door lock, improves the convenience and experience, and better conforms to the design concept of modern intelligent locks that are convenient and safe, and overcomes the technical problems that were not discovered before this application was filed. Description of the Drawings

[0040] Figure 1 is an exploded schematic view of an embodiment structure of the child lock switch structure;

[0041] Figure 2 is a schematic view of one surface of an embodiment structure of the handle joint;

[0042] Figure 3 is a schematic view of the structure when the limiting rod extends into the limiting empty groove in an embodiment structure;

[0043] Figure 4 is Figure 3 an enlarged view of part A in

[0044] Figure 5 is a schematic view of the structure when the limiting rod disengages from the limiting empty groove in an embodiment structure;

[0045] Figure 6It is a schematic diagram of the position and structure of the reset elastic member when the handle joint is installed on the lock case;

[0046] Figure 7 It is a schematic diagram of the structure of the handle joint.

[0047] Wherein:

[0048] Lock case 1; first limiting platform 11, second limiting platform 12;

[0049] Handle joint 2; limiting empty groove 21; downward pressing clamping end 211; upward pulling clamping end 212; first limiting empty groove 2111, second limiting empty groove 2122; threaded hole 23; convex lever 24 and 25; connecting part 26; disc main body 27;

[0050] Handle part 3;

[0051] Switch base 4;

[0052] Limiting rod 5; positioning chuck 51;

[0053] Positioning elastic member 6; arc end face 64; a side and b side of the arc end face;

[0054] Control mechanism 7; control operation part 71; connecting component 72;

[0055] Torsion spring 9; extension end 91 of the torsion spring. Specific embodiments

[0056] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings through specific embodiments.

[0057] For the convenience of understanding this case, before introducing this case, it should be noted that the lock body generally includes a bevel tongue, a main lock tongue and a safety lock tongue in the art. Basic operations and functions of the door lock: In the child lock closed state, pulling up the handle can drive and control the main lock tongue to extend for anti-locking; pressing down the handle can drive and control the bevel tongue and the main lock tongue to contract together to open the door. At this time, when the handle is released, only the bevel tongue extends again when the handle resets; the safety lock tongue is controlled to extend and retract by a separate component.

[0058] The present invention is a child lock switch structure for a door lock, including: a handle joint 2 and a limiting rod 5;

[0059] The handle joint 2 includes a disc main body 27, which can connect the handle part 3 of the door lock and the main lock tongue of the door lock to the disc main body 27 respectively, so as to realize that rotating the handle part 3 can drive and control the extension and retraction of the main lock tongue. Specifically, connecting parts 26 are respectively arranged in the middle of both sides of the disc main body 27 for installing and connecting with the handle part 3 and the main lock tongue respectively. The transmission control connection between the handle joint 2 and the main lock tongue can be realized through a transmission connecting piece, which can refer to the existing door lock.

[0060] On the disk surface of the disk body 27, there are provided limiting empty slots 21, and the two ends of the limiting empty slot 21 are respectively a downward pressing clamping end 211 and an upward lifting clamping end 212. As Figure 2 shown in 3 FIG. 5 or FIG. 6, the limiting empty slot 21 is sunken along the edge of the disk surface of the disk body 27, providing a stroke space for the part of the limiting rod 5 extending into the limiting empty slot 21. One end of the limiting rod 5 is aligned with the limiting empty slot 21; at least part of the limiting rod 5 can be adjustably slid in and out of the limiting empty slot 21. When at least part of the limiting rod 5 extends into the limiting empty slot 21, the downward pressing clamping end 211 of the limiting empty slot 21 is clamped by the part of the limiting rod 5 extending in, thereby restricting the handle joint 2 to only rotate in the direction away from the limiting rod 5 of the downward pressing clamping end 211 and reset after rotating in this direction; and, the rotatable angle of the handle joint 2 in this direction can at least drivably control the main lock tongue to fully extend. Further, as Figure 2 shown in FIG. 7, the rotation angle of the handle member 3 in the above direction is limited by the radian formed between the downward pressing clamping end 211 and the upward lifting clamping end 212 of the limiting empty slot 21.

[0061] It can be understood that since the handle member 3 is installed on the handle joint 2, when at least part of the limiting rod 5 extends into the limiting empty slot 21, the rotatable direction, rotation angle, and its reset of the handle member 3 are synchronized with the handle joint 2. Therefore, the handle member 3 cannot rotate in the opposite direction of the above direction; however, by operating the handle member 3 to rotate in the above direction, the main lock tongue can be drivably controlled to extend to achieve anti-locking.

[0062] According to the conventional embodiment of the present invention, when at least part of the limiting rod 5 extends into the limiting empty slot 21, the downward pressing clamping end 211 of the limiting empty slot 21 is clamped by the part of the limiting rod 5 extending in, which is the child lock open state; in the child lock open state, the direction in which the handle joint 2 is restricted to rotate is the direction in which the handle member 3 is lifted and rotated. That is, for the door lock with the child lock switch structure of the present invention, when normally installed on the door, the rotation direction of the handle member 3 is: pressing down the handle is the door opening operation (in the child lock closed state), and lifting up the handle is the anti-locking operation (i.e., the main lock tongue extends); of course, only for some embodiments, without departing from the technical solution of the present invention for transformation or other installation methods, they all belong to the protection scope of the present invention.

[0063] In addition, the door lock with the child lock structure mentioned in this case generally refers to the rear lock installed inside the house; of course, if there are other requirements, it can also be used for other installation ways or methods. As long as the structure and its realized functions are as in the present invention, they all belong to the protection scope of the present invention.

[0064] Therefore, for the child lock switch structure of the door lock disclosed in this solution, under normal installation, when the child lock is opened, that is, when the limit rod 5 is adjusted and extended into the limit slot 21, the limit rod 5 abuts against one side of the downward pressure clamping end 211 to restrict the handle joint 2 from rotating in the direction of the downward pressure clamping end 211 towards the limit rod 5 by means of clamping. Therefore, the handle member 3 is restricted by clamping and cannot be pressed down to open the door. However, by providing a rotatable limit slot 21 on the handle joint 2 to provide a travel space for the limit rod 5, the handle member 3 can be lifted to drive and control the main lock tongue of the lock body to extend, thereby achieving anti-locking of the door. The function of the child lock is retained, and at the same time, the anti-locking operation can be conveniently completed when the child lock is in the open state. When the child lock is closed, that is, the limit rod 5 disengages from the limit slot 21, the handle member 3 can be lifted to drive and control the main lock tongue to extend to achieve anti-locking, or the handle member 3 can be pressed down, and the main lock tongue and the diagonal tongue are driven and controlled to contract to achieve door opening.

[0065] It should be noted that: the limit rod 5 is not limited to a straight insertion rod as shown in the attached drawings. As long as there is a limit structure that can be adjusted to enter and exit the limit slot 21, and this limit structure can form a clamping position with the downward pressure clamping end 211 to restrict the downward rotation of the handle member 3; at the same time, the limit slot 21 can provide a travel space for the limit rod 5 so that the handle member 3 can be lifted to drive and control the main lock tongue to extend to achieve anti-locking, all belong to the protection scope of the present invention.

[0066] Furthermore, this child lock structure further includes: a lock housing 1 and a lock elastic reset component; the inner side surface of the lock housing 1 is provided with a first limit platform 11 and a second limit platform 12;

[0067] The elastic reset component includes a torsion spring 9 and two convex toggle rods 24 and 25; the torsion spring 9 is provided with two extension ends 91; the two convex toggle rods 24 and 25 are respectively arranged on the disk surface of the disk main body;

[0068] As Figure 6 shown, after the torsion spring 9 stores elastic potential energy by screwing, its two extension ends 91 are respectively clamped and arranged below the first limit platform 11 and below the second limit platform 12; therefore, the one extension end 91 clamped and arranged below the first limit platform 11 can only rotate in the direction of pressing down the handle member 3 in the state shown in Figure 6 the display; the other extension end 91 clamped and arranged below the second limit platform 12 can only rotate in the direction of lifting the handle member 3 in the state shown in Figure 6 the display;

[0069] The handle joint 2 is rotatably mounted on the lock housing 1 (through a bearing or other rotating member) and is located within the coil of the torsion spring 9; and the two raised levers 24 and 25 are respectively located above the two extension ends 91 of the torsion spring 9; specifically, the two raised levers 24 and 25 are also respectively located between the first limiting platform 11 and the second limiting platform 12; for the purpose of facilitating the expression of the positional relationship, as Figure 6 shown, the positions of the two raised levers 24 and 25 in the figure are the corresponding positions of the handle joint 2 when it is mounted on the lock housing 1 with respect to the two extension ends 91 of the torsion spring 9 respectively;

[0070] When the handle joint 2 is rotated, the raised lever 24 or 25 that can press against one of the extension ends 91, by driving the pressed extension end 91, (the torsion spring 9 is further tightened and deformed) to increase the elastic potential energy of the torsion spring 9. When the external force for rotating the handle joint 2 is withdrawn, the increased elastic potential energy is released to reset the handle joint 2 to the position before rotation.

[0071] Specifically, for example, as Figure 6 shown in the structure and position, in the initial state, since the torsion spring 9 stores a certain amount of elastic potential energy, the handle member 3 can be stabilized in the horizontal state. When the handle member 3 is pressed down, the raised lever 24 located inside the first limiting platform 11 drives the extension end 91 located below the raised lever 24 to rotate clockwise, and the torsion spring 9 deforms to increase the elastic potential energy. When the external pressing force on the handle member 3 is withdrawn, the increased elastic potential energy is released, the torsion spring 9 deforms and recovers, and the handle joint 2 and the handle member 3 are driven by the extension end 91 below the raised lever 24 to return to their original positions. Similarly, when the handle member 3 is lifted, the raised lever 25 and the extension end 91 on the side of the second limiting platform 12 are used to achieve the rotation and return to the original position. This is only for the purpose of facilitating the expression and should not be construed as a limitation of the present invention.

[0072] In order to adapt to doors with different opening directions, according to some embodiments of the present invention, at least one of the two protruding levers 24 and 25 is detachably provided on the disk surface of the disk body 27; detach at least one of the protruding levers 24 or 25, rotate the handle joint 2 (along with other components installed on the handle joint 2, such as the handle member 3 and the connecting member for connecting the lock tongue, which can refer to the prior art), and then reinstall the detached protruding lever back to the disk surface of the disk body 27 in place, so as to realize the reverse installation of the handle member 3. The limiting empty slots 21 include a first limiting empty slot 2111 and a second limiting empty slot 2122; moreover, the limiting rod 5 can slidably enter and exit the corresponding first limiting empty slot 2111 or second limiting empty slot 2122 adjustably in the two installation directions of the handle member 3; that is, the position of the limiting rod 5 remains unchanged, and the position of one limiting empty slot matches one installation direction, so that the limiting rod 5 can correspond respectively in the two different installation directions of the handle member 3, so as to have the structure of this child lock and its functions in both installation directions. At the same time, at least one of the protruding levers 24 and 25 is detachably provided on the disk surface of the disk body. According to the actual opening direction of the door, removing the protruding lever can realize the quick reverse installation of the door lock. It can be understood that after the door lock is reversely installed, the two protruding levers 24 and 25 are interchanged in position, and the operation principle is the same, only the position and direction are interchanged.

[0073] To facilitate the removal of the protruding levers 24 and 25, as Figures 6-7 shown, the handle joint 2 is provided with a threaded hole 23; the protruding lever 25 can be a screw rod matching the threaded hole 23; the protruding lever 25 is detachably screwed into the threaded hole 23 by threads. It can be understood that the protruding lever 25 and / or 24 can both be detachably installed on the disk surface of the disk body of the handle joint 2 in this structural manner; or other detachable structural manners can be adopted.

[0074] To prevent the handle member 3 from rotating infinitely in a single direction (clockwise or counterclockwise) to damage the torsion spring 9, a rotation limiting portion 13 is provided on the inner side surface of the lock case 1; the rotation limiting portion 13 is arranged on the rotation paths of the protruding levers 24 and 25, and is used to limit the rotation stroke of the protruding levers 24 and 25, so as to limit the rotation angle of the handle joint 2. For example, based on Figure 6 the position state shown, that is, the rotation of the handle member 3 in both clockwise and counterclockwise directions is respectively limited by the protruding levers 24 and 25 rotating and abutting against the right end and the left end of the rotation limiting portion 13. It should be noted that the protruding lever 24 is located on the disk surface of the disk body facing the handle member 3 and at the symmetrical position of the protruding lever 25; however, it should not be construed as a limitation of the present invention.

[0075] For more convenient control of the on / off operation of the child lock, further, the child lock structure further includes: a control mechanism 7, which includes a control operation part 71 and a connection component 72; the control operation part 71 is connected to the limit rod 5 through the connection component 72 to control the limit rod 5 to slidably enter and exit the limit slot 21 adjustably. According to some embodiments of the present invention, the control mechanism 7 is arranged on the outer surface of the lock case 1 and can adopt a switch structure such as a toggle switch.

[0076] If a switch structure such as a toggle switch is adopted, when the user switches the child lock between the open state and the closed state, the user only needs to lift or lower the control operation part 71 to synchronously adjust and control the limit rod 5 to extend into or disengage from the limit slot 21, providing a convenient operation for the user.

[0077] Preferably, a prompt mark for the on / off state of the child lock, such as "ON and OFF; open and closed, etc.", can also be arranged near the control operation part 71 to provide the user with an intuitive door lock state.

[0078] To make the structure and state of the child lock more stable, the child lock further includes: a positioning elastic member 6 and a switch base 4; the limit rod 5 is slidably arranged in the switch base 4 adjustably; the positioning elastic member 6 is installed on the switch base 4 and is located on the side of the limit rod 5; the positioning elastic member 6 has an arc end face 64 with elastic deformation; the limit rod 5 is provided with a positioning chuck 51; when the limit rod 5 extends into and disengages from the limit slot 21, the positioning chuck 51 passes through the arc end face 64 and moves from one side of the arc end face 64 to the other side of the arc end face 64, and the arc end face 64 limits the positioning chuck 51, thereby stabilizing the limit rod at a certain position, and thus the child lock can be kept in the open state or the closed state.

[0079] Specifically, such as Figure 5, the switch base 4 is installed inside the lock housing 1; the positioning elastic member 6 can be a metal sheet or other material with recoverable elastic deformation. To facilitate the installation of the positioning elastic member 6, the two ends of the two positioning elastic members 6 are bent and snapped into four limiting grooves on the switch base 4 to fix the two positioning elastic members 6 on the switch base 4; both of the two positioning elastic members 6 have arc-shaped end faces 64 with elastic deformation, and the arc tops of the two arc-shaped end faces 64 of the two positioning elastic members 6 face each other. The top of the arc-shaped end face 64 divides the space into two sides. When the limiting rod 5 needs to be inserted into the limiting empty groove 21, the positioning chuck 51 needs to move from side a of the arc-shaped end face 64 to side b with the help of an external force. At this time, after the positioning chuck 51 is stressed, it presses against the arc-shaped end face 64, causing the arc-shaped end face 64 to deform, and after moving from side a of the arc-shaped end face 64 to side b, the arc-shaped end face 64 deforms and recovers; when the force on the positioning chuck 51 is withdrawn, the positioning chuck 51 stays on side b without being stressed, achieving the effect of limiting the limiting rod 5 in the limiting empty groove 21; and moving from side b to side a follows the same principle, keeping the limiting rod 5 disengaged from the limiting empty groove 21. The structure is simple, and the positioning is accurate and stable. The positioning chuck 51 can stay on side a or side b, realizing the adjustment and control to accurately insert or disengage the limiting rod 5 from the limiting empty groove 21.

[0080] It can be understood that the above introduction is about the structure of a toggle switch. Therefore, the shape of the limiting rod 5 and its installation control mechanism are not limited to the examples in this embodiment only. Other switch structures can also be used. As long as the limiting rod 5 with an approximate shape and / or a different installation control mechanism is obtained by transformation without departing from the purpose of the present invention, it belongs to the protection scope of the present invention.

[0081] The present invention also provides a door lock, including: a lock body, a handle member 3, and a door lock panel;

[0082] The door lock panel is installed with a child lock switch structure as described in any of the above embodiments; the lock housing 1 in the above-introduced child lock structure is the main part of the door lock panel here. The door lock panel generally also includes functional components such as a password input module, a fingerprint recognition module, a camera, a panel cover, and so on;

[0083] The handle member 3 is installed and connected to the handle joint 2 and is located on the front of the door lock panel;

[0084] The lock body is connected to the handle joint 2 through a transmission component. Rotating the handle member 3 drives and controls the lock tongue in the lock body to extend or retract;

[0085] Among them, the lock body includes a main lock tongue as described in any of the above embodiments.

[0086] Furthermore, the lock body includes an inclined tongue, a main tongue and a safety tongue; the door lock also includes a safety tongue control mechanism for controlling the switch of the safety tongue. The safety tongue control mechanism is arranged on the front of the door lock panel for easy operation.

[0087] The present invention also proposes a door, comprising: a door body and a lock body; the lock body is installed on the door body; the lock body is a door lock of any of the above embodiments, so that the door can realize the above-mentioned door lock function with a child lock structure.

[0088] The present invention also discloses a method for anti-locking a door lock, wherein the door lock comprises a child lock and a rotating handle. When the child lock is opened, the handle is restricted from being pressed down and rotated, but the handle can be lifted up to realize anti-locking of the door lock.

[0089] It is understandable that the anti-locking method can be implemented by installing a door lock with the above-mentioned child lock switch structure on the door, but it should not be understood as a limitation of the present invention.

[0090] In the description of the present invention, it is necessary to understand that the terms "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "side", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0091] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A child lock switch structure for a door lock, characterized in that, Including: a handle joint and a limiting rod; The handle joint includes a disc body, and the handle part of the door lock and the main lock tongue can be respectively connected to the disc body to realize that rotating the handle part can drive and control the extension and retraction of the main lock tongue; A limiting empty groove is arranged on the disc surface of the disc body, and the two ends of the limiting empty groove are respectively a downward pressing clamping end and an upward lifting clamping end; One end of the limiting rod is arranged opposite to the limiting empty groove; and at least part of the limiting rod can be slid in and out of the limiting empty groove adjustably; Wherein, when at least part of the limiting rod extends into the limiting empty groove, the downward pressing clamping end of the limiting empty groove is clamped by the part of the limiting rod that extends in, so as to limit the handle joint to only rotate in the direction away from the limiting rod of the downward pressing clamping end and reset after rotating in this direction; and the rotatable angle of the handle joint in this direction can at least drive and control the main lock tongue to extend; When at least part of the limiting rod extends into the limiting empty groove, the downward pressing clamping end of the limiting empty groove is clamped by the part of the limiting rod that extends in, which is the child lock open state; In the child lock open state, the direction in which the handle joint is limited to rotate is the direction in which the handle part is lifted and rotated.

2. The child lock switch structure of a door lock according to claim 1, characterized in that, It further includes a lock case and an elastic reset assembly; A first limiting platform and a second limiting platform are arranged on the inner side surface of the lock case; The elastic reset assembly includes a torsion spring and two protruding lever rods; the torsion spring is provided with two extending ends; the two protruding lever rods are respectively arranged on the disc surface of the disc body; After the torsion spring is screwed to store elastic potential energy, its two extending ends are respectively clamped and limited below the first limiting platform and below the second limiting platform; The handle joint is rotatably installed on the lock case and is located within the circle of the torsion spring; and the two protruding lever rods are respectively located above the two extending ends of the torsion spring; When rotating the handle joint, the protruding lever rod that can press against one of the extending ends drives the pressed extending end to increase the elastic potential energy of the torsion spring, and the handle joint can be reset to the position before rotation.

3. The child lock switch structure of a door lock according to claim 2, characterized in that, At least one of the two protruding lever rods is detachably arranged on the disc surface of the disc body; by removing at least one of the protruding lever rods, rotating the handle joint, and then installing the removed protruding lever rod in place, the handle part can be reversely installed; The limiting empty groove includes a first limiting empty groove and a second limiting empty groove; moreover, the limiting rod can be slid in and out of the corresponding first limiting empty groove or second limiting empty groove adjustably in the two installation directions of the handle part.

4. The child lock switch structure of a door lock according to claim 2, characterized in that, A rotation limiting part is arranged on the inner side surface of the lock case, and the rotation limiting part is arranged on the rotation path of the protruding lever rod to limit the rotation stroke of the protruding lever rod so as to limit the rotation angle of the handle joint.

5. The child lock switch structure of a door lock according to claim 1, characterized in that It further includes: A control mechanism, which includes a control operation part and a connection component; The control operation part is connected to the limiting rod through the connection component to control the limiting rod to be slid in and out of the limiting empty groove adjustably.

6. The child lock switch structure of a door lock according to claim 5, characterized in that, It further includes: A positioning elastic part and a switch base; The limit rod is slidably arranged in the switch base in an adjustable manner; The positioning elastic member is installed in the switch base and is located on the side of the limit rod; the positioning elastic member has an arc end face with elastic deformation; The limit rod is provided with a positioning chuck; when the limit rod extends into or disengages from the limit slot, the positioning chuck passes through the arc end face and moves from one side of the arc end face to the other side of the arc end face.

7. A door lock, characterized in that, Comprising: A lock body, a handle member and a door lock panel; The child lock switch structure as described in any one of claims 1 to 6 is installed in the door lock panel; The handle member is installed and connected to the handle joint and is located on the front of the door lock panel; The lock body is connected to the handle joint through a transmission assembly, and rotating the handle member drives and controls the bolt in the lock body to extend or retract; Wherein, the lock body is provided with a main bolt.

8. A door, characterized in that, Comprising: A door main body and the door lock as described in claim 7; the door lock is installed on the door main body.

9. A method for locking a door lock, using a door lock as claimed in claim 7, wherein the door lock includes a child lock and a rotating handle member, characterized in that, In the open state of the child lock, the handle member is restricted from being pressed down and rotated, but the handle member can be lifted to lock the door lock in reverse.

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