CN111520003A - Child lock switch structure of door lock, door and back locking method of child lock switch structure - Google Patents

Abstract

A child lock switch structure of a door lock and the door lock, the door and a back locking method thereof, the child lock switch structure comprises: a handle joint and a limiting rod; when the gag lever post stretched into spacing dead slot, the part screens that the screens end was stretched into by the gag lever post of pushing down of spacing dead slot to the restriction handle connects the direction rotation that only can push down the screens end and keep away from the gag lever post and the reseing after this direction rotation. The door lock includes: a lock body, a handle member and a door lock panel; the switch structure of the child lock is arranged in the door lock panel; a door, the door lock is installed on a door main body. The scheme is a child lock switch structure of a door lock, and a limit empty groove which rotates relatively is arranged on a handle joint; when the child lock is opened, the handle piece cannot press down the door, but the handle piece is lifted up to extend out of the main bolt of the lock body, so that the door is locked reversely; when the child lock is closed, the handle piece can be normally used, the main bolt extends out to realize counter locking when the handle piece is lifted up, and the door is opened when the handle piece is pressed down; the scheme provides the advantages of simple structure and high safety.

Description

A child lock switch structure of a door lock and its door lock, door and anti-locking method

technical field

The invention relates to the technical field of door locks, in particular to a child lock switch structure of a door lock and a door lock, door and anti-locking method thereof.

Background technique

In the existing door lock, when the child lock switch is turned on, if the handle is a door lock structure in an idling state, and the user lifts and/or presses the handle at this time, the door lock has no functional response, that is, it can neither open the door nor open the door. In addition, if the handle is a fixed door lock structure, the handle cannot be lifted and pressed down, for example, the application number is CN201822041264 .8 or the Chinese invention patent of CN201320210378.5, these door lock structures or the door lock structures involved in the patent, if you need to lift the handle to lock the door lock, you must first close the child lock, so that the handle is in a normal state, then you can lift the handle to lock the door. It is inconvenient for users to use the door lock to reverse lock, and then re-open the child lock after the door lock is reversed.

The two door locks with a child lock structure are extremely inconvenient for users to operate during use, do not conform to the concept that modern smart door locks bring convenience to users, and give users a poor experience.

SUMMARY OF THE INVENTION

In order to solve the technical defects of the current door lock with a child lock structure, its single function, complex structure, and inconvenient operation and use lead to poor experience, the purpose of the present invention is to propose a child lock switch structure for a door lock. In the state that the limit rod extends into the limit slot, it is still possible to realize the transmission control of the extension of the main lock tongue by rotating the handle joint. The door lock with the child lock structure can be installed on the door, and when the child lock is opened, the door can not only be restricted, but also can be locked by turning the handle, which improves the function and convenience of modern door locks.

For this purpose, the present invention adopts the following technical solutions:

A child lock switch structure of a door lock, comprising: a handle joint and a limit rod;

The handle joint includes a disc body, and the handle piece of the door lock and the main lock tongue can be respectively connected to the disc body, so as to realize that rotating the handle piece can drive and control the expansion and contraction of the main lock tongue;

A space-limiting slot is arranged on the disc surface of the disc main body, and the two ends of the space-limit slot are respectively a pressing-down end and a lift-up end;

One end of the limit rod is aligned with the limit slot; and at least part of the limit rod can be adjusted to slide in and out of the limit slot;

Wherein, when at least a part of the limit rod extends into the limit slot, the depressed locking end of the limit slot is clamped by the part of the limit rod into which it extends, thereby restricting the The handle joint can only perform the rotation in the direction in which the depressing locking end is away from the limit rod, and the reset after rotating in this direction; and the rotatable angle of the handle joint in this direction can at least transmit Control the extension of the main deadbolt.

Preferably, when at least a part of the limit rod extends into the limit slot, the depressed locking end of the limit slot is locked by the part of the limit rod into which the child lock is opened. state;

In the open state of the child lock, the direction in which the handle joint is restricted to rotate only is the direction in which the handle piece is lifted up and rotated.

Further, it also includes a lock case and an elastic reset assembly;

The inner side of the lock shell is provided with a first limit stage and a second limit stage;

The elastic reset assembly includes a torsion spring and two raised levers; the torsion spring is provided with two extension ends; the two raised levers are respectively arranged on the disk surface of the disc main body;

After the torsion spring is twisted to store elastic potential energy, the two extending ends of the torsion spring are respectively clamped and disposed below the first limit table and below the second limit table;

The handle joint is rotatably mounted on the lock housing and is located in the circle of the torsion spring; and the two protruding levers are respectively located above the two extending ends of the torsion spring;

When the handle joint is rotated, the raised lever can be pressed against one of the extension ends, and the elastic potential energy of the torsion spring can be increased by driving the pressed extension end to increase the elastic potential energy of the torsion spring. Return the handle connector to its pre-rotation position.

According to some embodiments of the present invention, at least one of the two raised levers is detachably disposed on the disk surface of the disc main body; at least one of the raised levers is removed, and the handle joint is rotated , and then install the disassembled raised lever in place to realize the reversing installation of the handle;

The limiting cavity includes a first limiting cavity and a second limiting cavity; moreover, the limiting rod can adjustably slide in and out of the corresponding first limiting rods in the two installation directions of the handle piece. Empty slot or second limit slot.

Further, the inner side of the lock shell is provided with a rotation limiter, and the rotation limiter is arranged on the rotation path of the raised lever to limit the rotation stroke of the raised lever to prevent The rotation angle of the handle joint is limited.

Further, it also includes: a control mechanism, which includes a control operation part and a connection assembly;

The control operation part is connected with the limit rod through the connection assembly, so as to control the limit rod to adjustably slide into and out of the limit slot.

Further, it also includes: a positioning elastic member and a switch base;

The limit rod is slidably arranged in the switch base in an adjustable manner;

The positioning elastic member is installed on the switch base and is located on the side of the limit rod; the positioning elastic member has an elastically deformed arc end surface;

The limit rod is provided with a positioning chuck; when the limit rod extends into and out of the limit slot, the positioning chuck passes through the arc end face, and extends from one end of the arc end face. Move the side to the other side of the arc end face.

The invention also discloses a door lock, comprising: a lock body, a handle piece, and a door lock panel;

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

The handle piece is installed and connected to the handle joint, and is located on the front side of the door lock panel;

The lock body and the handle joint are connected through a transmission assembly, and the handle piece is rotated to drive and control the lock tongue in the lock body to extend or retract;

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

Further, the lock body includes an oblique tongue, a main lock tongue and a safety lock tongue;

The door lock also includes a safety lock tongue control mechanism for controlling the switch of the safety lock tongue.

The present invention also discloses a door, comprising: a door body and the door lock as described above; the door lock is mounted on the door body.

The invention also discloses a method for anti-locking a door lock. The door lock includes a child lock and a rotating handle. When the child lock is open, the handle is restricted from pressing down and rotating, but can be lifted up. The handle piece is used to realize the anti-locking of the door lock.

Beneficial effects of the present invention:

The solution is a child lock switch structure of a door lock, which is simple in structure, convenient in installation, and increases in function while reducing cost. The handle joint is provided with the limiting cavity with a certain arc; the limiting rod is aligned with the limiting cavity, and can be adjusted to slide in and out of the limiting cavity. The child lock of this proposal is in the open state, that is, when the limit rod is aligned with one end of the limit slot and is adjusted to extend into the limit slot, the downward pressure of the limit slot The locking end abuts on the side of the limit rod and is clamped by the limit rod, thereby restricting the handle joint from rotating toward the limit rod side. At the same time, in order to solve the technical problem of the existing child lock, this proposal Enlarging the limit slot to a wider arc to provide travel space for the limit rod, so as to limit the handle joint to only rotate in the direction in which the depressing clamping end is away from the limit rod, and Reset after being rotated in this direction; at the same time, when the handle joint is rotated in this direction, it can drive and control the main lock tongue to extend.

Therefore, when the door lock with this child lock structure is installed on the door, when the child lock is opened, the handle can be rotated in the direction to drive and control the main lock tongue to extend to realize anti-locking. It brings a new operation function for users to use the door lock, improves the convenience and experience, is more in line with the convenient and safe design concept of modern smart locks, and overcomes the technical problem that was not found before the application in this case.

Description of drawings

1 is an exploded schematic diagram of an embodiment structure of a child lock switch structure;

FIG. 2 is a schematic structural diagram of one of the disk surfaces of an embodiment structure of the handle joint;

3 is a schematic structural diagram of a limit rod extending into a limit slot in the structure of an embodiment;

Fig. 4 is the enlarged view of A part in Fig. 3;

5 is a schematic structural diagram of a limit rod of an embodiment structure when it is separated from the limit slot;

6 is a schematic diagram of the position and structure of the reset elastic member when the handle joint is installed on the lock housing;

FIG. 7 is a schematic view of the structure of the handle joint.

in:

Lock shell 1; first limit stage 11, second limit stage 12;

Handle joint 2; limit slot 21; press down end 211; lift up clip end 212; first limit slot 2111, second limit slot 2122; threaded hole 23; raised lever 24 and 25; connecting part 26; disc main body 27;

handle piece 3;

switch base 4;

Limiting rod 5; Positioning chuck 51;

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

control mechanism 7; control operation part 71; connecting assembly 72;

The torsion spring 9; the extended end 91 of the torsion spring.

Detailed ways

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

In order to facilitate the understanding of this case, before introducing this case, it should be noted that the lock body generally includes an oblique tongue, a main lock tongue and a safety lock tongue in the art. The basic operation and function of the door lock: when the child lock is closed, the upper handle can drive the main lock tongue to extend for anti-locking; press the handle down to drive and control the oblique tongue and the main lock tongue to retract together to realize the door opening. When the handle is released, only the oblique tongue re-extends when the handle is reset; the safety lock tongue is controlled and retracted by a separate component.

The present invention is a child lock switch structure of a door lock, comprising: a handle joint 2 and a limit rod 5;

The handle joint 2 includes a disc body 27 , which can connect the handle member 3 of the door lock and the main bolt of the door lock to the disc body 27 respectively, so that the rotation of the handle member 3 can drive and control the expansion and contraction of the main bolt. Specifically, connecting portions 26 are respectively provided in the middle portions of both sides of the disc main body 27, which are respectively used for installation and connection with the handle member 3 and the main locking tongue. For the transmission control connection between the handle joint 2 and the main lock tongue through the transmission connection piece, reference may be made to the existing door lock.

The disc main body 27 is provided with a limiting slot 21 on the disc surface, and the two ends of the limiting slot 21 are the lower pressing end 211 and the upper lifting end 212 respectively. As shown in FIG. 2 , 3 or 6 , the limiting slot 21 is set down along the edge of the disc surface of the disc main body 27 to provide travel space for the portion of the limiting rod 5 extending into the limiting slot 21 . One end of the limiting rod 5 is aligned with the limiting cavity 21 ; at least part of the limiting rod 5 can be adjusted to slide in and out of the limiting cavity 21 . When at least a part of the limiting rod 5 extends into the limiting cavity 21 , the depressed locking end 211 of the limiting cavity 21 is clamped by the part of the limiting rod 5 extending into it, thereby Restricting the handle joint 2 to only rotate in the direction in which the depressing locking end 211 is away from the limit rod 5 and reset after rotating in this direction; and, the handle joint 2 in this direction The rotatable angle can at least drive the main lock tongue to fully extend. Further, as shown in FIG. 2 , the rotation angle of the handle member 3 in the direction is limited by the difference between the lower pressing end 211 and the upward lifting end 212 of the limiting cavity 21 . The arc formed between.

It can be understood that the handle member 3 is installed on the handle joint 2, so when the limit rod 5 at least partially extends into the limit slot 21, the rotatable direction, rotation angle and reset of the handle member 3 are all related to the handle joint. 2 sync. Therefore, the handle member 3 cannot be rotated in the opposite direction of the above-mentioned direction; however, by operating the handle member 3 to rotate in the above-mentioned direction, it is possible to drive and control the main lock tongue to extend to achieve reverse locking.

According to the conventional embodiment of the present invention, when at least a part of the limit rod 5 extends into the limit slot 21, the depressed locking end 211 of the limit slot 21 is locked by the part of the limit rod 5 that extends into the limit slot 21. Lock open state; in the child lock open state, the direction in which the handle joint 2 is restricted to rotate only is the direction in which the handle member 3 is lifted up and rotated. That is, the door lock with the child lock switch structure of the present invention is normally installed on the door, and the rotation direction of the operation of the handle member 3 is: pressing the handle down is the door opening operation (when the child lock is closed), and the lifting handle is the anti-lock operation. (that is, the main lock tongue protrudes); of course, it is only a partial embodiment, and modifications or other installation methods without departing from the technical solution of the present invention belong to the protection scope of the present invention.

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

Therefore, 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 to extend into the limit slot 21, the limit rod 5 abuts against the lower One side of the detent end 211 is pressed down and the detent end 211 is rotated in the direction of the detent lever 5 by the detent restriction handle joint 2, so the handle member 3 is restricted by the detent position and cannot be pressed down to open the door; The handle joint 2 is provided with a relatively rotatable limiting slot 21 to provide travel space for the limiting rod 5, so the handle piece 3 can be lifted up to drive the main latch of the lock body to extend, so as to realize the reverse locking of the door. The function of the child lock is retained, and the anti-lock operation can be conveniently completed when the child lock is opened. When the child lock is closed, that is, the limit lever 5 is separated from the limit slot 21, the handle member 3 can be lifted up to drive the main latch to extend to realize anti-locking, or the handle member 3 can be pressed down, and the main latch and the oblique latch are locked. The drive controls retract to open the door.

It should be noted that the limit rod 5 is not limited to the straight insertion rod as shown in the drawings, as long as it has a limit structure that can be adjusted in and out of the limit slot 21, the limit structure can be connected with the lowering clamping end 211 forms a locking position to limit 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 lifting handle member 3 can drive and control the main lock tongue to extend to realize anti-locking. It belongs to the protection scope of the present invention.

Further, the child lock structure also includes: a lock shell 1 and a lock elastic reset assembly; the inner side of the lock shell 1 is provided with a first limit stage 11 and a second limit stage 12;

The elastic reset assembly includes a torsion spring 9 and two raised levers 24 and 25; the torsion spring 9 is provided with two extending ends 91; the two raised levers 24 and 25 are respectively arranged on the on the disc surface of the disc body;

As shown in FIG. 6 , after the torsion spring 9 stores elastic potential energy by being twisted, the two extending ends 91 of the torsion spring 9 are respectively clamped and disposed under the first limiting platform 11 and the second limiting platform. 12; therefore, the extension end 91 located under the first limit platform 11 can only be rotated in the direction of pressing the handle 3 as shown in FIG. 6; The other extension end 91 below the two limit platforms 12 can only be rotated in the direction of the upper handle member 3 as shown in FIG. 6 ;

The handle joint 2 (through bearings or other rotating parts) is rotatably mounted on the lock housing 1, and is located in the circle of the torsion spring 9; and the two protruding levers 24 and 25 are located at the Above the two extending ends 91 of the torsion spring 9; specifically, the two protruding levers 24 and 25 are also respectively located between the first limiting platform 11 and the second limiting platform 12; in order to It is helpful to express the positional relationship. As shown in FIG. 6 , the positions of the two protruding levers 24 and 25 in the figure are when the handle joint 2 is installed in the lock shell 1 , which are respectively connected with two of the torsion springs 9 . the corresponding position of the extension end 91;

When the handle joint 2 is rotated, the protruding levers 24 and 25 that can be pressed against one of the extending ends 91, which drive the pressed extending end 91, (the torsion spring 9 is further Tighten and deform) to increase the elastic potential energy of the torsion spring 9. When the external force for rotating the handle joint 2 is removed, the increased elastic potential energy can be released to restore the handle joint 2 to the position before rotation.

Specifically, for example, in the structure and position shown in FIG. 6 , in the initial state, the handle member 3 can be stabilized in a horizontal state because the torsion spring 9 stores a certain elastic potential energy. Depressing the handle member 3, the raised lever 24 located on the inner side of the first limiting platform 11 drives the extension end 91 located below the raised lever 24 to rotate clockwise, the torsion spring 9 is deformed to increase the elastic potential energy, and is removed Depressing the external force of the handle member 3, the increased elastic potential energy is released, the torsion spring 9 is deformed and restored, and the extension end 91 under the raised lever 24 drives the handle joint 2 and the handle member 3 to return to their original positions. Similarly, when the handle member 3 is lifted up, the protruding lever 25 and the extension end 91 located on the side of the second limiting platform 12 are used to realize the rotation and return to the original position. This is only for convenience of expression, and should not be construed as a limitation of the present invention.

In order to adapt to doors with different opening directions, according to some embodiments of the present invention, at least one of the two raised levers 24 and 25 is detachably disposed on the disk surface of the disk main body 27; at least one of them is detachable The protruding lever 24 or 25 rotates the handle joint 2 (with other components installed on the handle joint 2, such as the handle piece 3 and the connecting piece connecting the lock tongue, please refer to the prior art), and then The disassembled protruding lever is installed back on the disk surface of the disk main body 27 in situ, so that the handle member 3 can be reversely installed. The limiting cavity 21 includes a first limiting cavity 2111 and a second limiting cavity 2122 ; and the limiting rod 5 can be adjusted to slide in and out respectively in two installation directions of the handle member 3 . The corresponding first limit slot 2111 or the second limit slot 2122; that is, the position of the limit rod 5 remains unchanged, and the position of one limit slot matches an installation direction, so that the limit rod 5 is in the position of the handle member 3. The two different installation directions can be corresponding to each other, so as to realize the structure of the child lock and the functions brought by the child lock in both installation directions. At the same time, at least one of the protruding levers 24 and 25 is detachably arranged on the disk surface of the disc main body. According to the actual opening direction of the door, removing the protruding lever can realize quick reversing and installing the door lock. . It can be understood that after the door lock is installed in reverse direction, the two raised levers 24 and 25 exchange positions, and the operation principle is the same, only the positions and directions are exchanged.

In order to facilitate the disassembly of the raised levers 24 and 25, as shown in Figures 6-7, the handle joint 2 is provided with a threaded hole 23; the raised lever 25 can be a screw that matches the threaded hole 23; The raised lever 25 is detachably screwed into the threaded hole 23 through threads. It can be understood that the protruding levers 25 and/or 24 can be detachably mounted on the disk surface of the disc main body of the handle joint 2 by adopting this structure; or adopt other detachable structures.

In order to prevent the handle member 3 from rotating at an infinite angle in a single clockwise (or counterclockwise) direction to damage the torsion spring 9, the inner side of the lock housing 1 is provided with a rotation limit portion 13; the rotation limit portion 13 is provided with On the rotational paths of the raised levers 24 and 25 , the rotational strokes of the raised levers 24 and 25 are limited, so as to limit the rotation angle of the handle joint 2 . For example, based on the position shown in FIG. 6 , that is, the rotation of the handle member 3 in both clockwise and counterclockwise directions is respectively limited by the rotation of the protruding levers 24 and 25 against the right end of the rotation limiting portion 13 . and the left end. It should be noted that the raised lever 24 is located on the disk surface of the shown disc main body facing the handle member 3, and is located at a symmetrical position of the raised lever 25; however, it should not be construed as a limitation of the present invention.

In order to variably control the switch 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 assembly 72; The limiting rod 5 is connected to control the limiting rod 5 to adjustably slide into and out of the limiting cavity 21 . According to some embodiments of the present invention, the control mechanism 7 is disposed on the outer surface of the lock housing 1, and a switch structure such as a toggle can be used.

If a switch structure such as a toggle is used, when the user switches the open state and the closed state of the child lock, the user only needs to lift or lower the control operation part 71 to synchronously adjust the control limit rod 5 to extend into or out of the limit space In the slot 21, convenient operation is provided for the user.

Preferably, near the control operation part 71, a prompt sign indicating the switch status of the child lock, such as "ON and OFF; ON and OFF, etc." can also be provided to provide the user with an intuitive door lock status.

In order to make the structure and state of the child lock more stable, the child lock also includes: a positioning elastic member 6 and a switch base 4; the limit rod 5 is slidably arranged in the switch base 4 in an adjustable manner; the positioning elastic The positioning 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 elastically deformed arc end surface 64; the limit rod 5 is provided with a positioning chuck 51 ; When the limit rod 5 extends into and out of 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 On the other side of the arc end surface 64 , the positioning clip 51 is restricted by the arc end surface 64 , so that the limiting rod is stabilized at a certain position, and the child lock can be kept open or closed.

Specifically, as shown in FIG. 5 , the switch base 4 is installed in the lock housing 1 ; the positioning elastic member 6 can be made of a metal sheet or other material with recoverable elastic deformation. In order to facilitate the installation of the positioning elastic member 6 , two Both ends of the two positioning elastic members 6 are bent and snapped into the four limiting grooves on the switch base 4 to fix the two positioning elastic members 6 on the switch base 4; the two positioning elastic members 6 are elastic For the deformed circular arc end surfaces 64 , the arc tops of the two circular arc end surfaces 64 of the two positioning elastic members 6 are disposed opposite to each other. The top of the arc end face 64 divides the space into two sides. When the limit rod 5 needs to be extended into the limit slot 21, the positioning chuck 51 needs to move from the a side of the arc end face 64 to the b side with the help of external force, and At this time, the positioning clip 51 is pressed against the arc end face 64 after being stressed, so that the arc end face 64 is deformed, and the arc end face 64 is deformed and restored after moving from the a side of the arc end face 64 to the b side; After the force of the head 51 is removed, the positioning chuck 51 stays on the b side without any force, so as to realize the effect of confining the limit rod 5 in the limit slot 21; and moving from the b side to the a side also In the same principle, the limit rod 5 is kept detached from the limit slot 21 . The structure is simple, the positioning is accurate and stable, and the positioning chuck 51 can be kept at the a side or the b side, so that the adjustment control limit rod 5 can be accurately extended into or out of the limit slot 21 .

It can be understood that the above description is a structure of a toggle switch, so the shape of the limit rod 5 and its installation control mechanism are not limited to the examples of this embodiment, and other switch structures can also be used, which do not depart from the present invention. The limiting rods 5 with similar shapes and/or different installation control mechanisms obtained by reforming the purpose of the present invention all belong to the protection scope of the present invention.

The present invention also provides a door lock, comprising: a lock body, a handle member 3, and a door lock panel;

The door lock panel is installed with the child lock switch structure of any of the above-mentioned embodiments; the lock shell 1 in the above-described child lock structure is the main part of the door lock panel here, and the door lock panel generally also includes a password input module. , index identification module, camera, panel cover and other functional components;

The handle piece 3 is installed and connected to the handle joint 2, and is located on the front of the door lock panel;

The lock body is connected with the handle joint 2 through a transmission assembly, and the handle member 3 is rotated to drive and control the lock tongue in the lock body to extend or retract;

Wherein, the lock body includes the main lock tongue as shown in any of the above embodiments.

Further, the lock body includes an oblique tongue, a main lock tongue and a safety lock tongue; the door lock further includes a safety lock tongue control mechanism for controlling the switch of the safety lock tongue. The safety lock tongue control mechanism is set on the front of the door lock panel for easy operation.

The present invention also provides a door, comprising: a door main body and a lock body; the lock body is installed on the door main body; the lock body is the door lock of any of the above embodiments, so that the door can realize the above-mentioned child lock structure. Door lock function.

The invention also discloses a method for anti-locking a door lock. The door lock includes a child lock and a rotating handle. When the child lock is open, the handle is restricted from pressing down and rotating, but can be lifted up. The handle piece is used to realize the anti-locking of the door lock.

It can be understood that the anti-lock method can be implemented by using the door lock with the above-mentioned child lock switch structure to be installed on the door, but it should not be understood as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", " The orientation or positional relationship indicated by "outside", "side", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific Orientation, construction and operation in a particular orientation, and therefore should not be construed as limiting the invention.

The technical principle of the present invention has been described above with reference to the specific embodiments. These descriptions are only for explaining the principle of the present invention, and should not be construed as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can think of other specific embodiments of the present invention without creative efforts, and these methods will all fall within the protection scope of the present invention.

Claims (10)

1. a child lock switch structure of a door lock, characterized in that, comprising: a handle joint and a limit rod; The handle joint includes a disc body, and the handle piece of the door lock and the main lock tongue can be respectively connected to the disc body, so as to realize that rotating the handle piece can drive and control the expansion and contraction of the main lock tongue; A space-limiting slot is arranged on the disc surface of the disc main body, and the two ends of the space-limit slot are respectively a pressing-down end and a lift-up end; One end of the limit rod is aligned with the limit slot; and at least part of the limit rod can be adjusted to slide in and out of the limit slot; Wherein, when at least a part of the limit rod extends into the limit slot, the depressed locking end of the limit slot is clamped by the part of the limit rod into which it extends, thereby restricting the The handle joint can only perform the rotation in the direction in which the depressing locking end is away from the limit rod, and the reset after rotating in this direction; and the rotatable angle of the handle joint in this direction can at least transmit Control the extension of the main deadbolt. 2 . The child lock switch structure of a door lock according to claim 1 , wherein when at least part of the limit rod extends into the limit slot, the lower part of the limit slot The part of the clamping position where the pressing position end is extended by the limiting rod is in the child lock open state; In the open state of the child lock, the direction in which the handle joint is restricted to rotate only is the direction in which the handle piece is lifted up and rotated. 3. The child lock switch structure of a door lock according to claim 2, characterized in that, further comprising a lock housing and an elastic reset assembly; The inner side of the lock shell is provided with a first limit stage and a second limit stage; The elastic reset assembly includes a torsion spring and two raised levers; the torsion spring is provided with two extension ends; the two raised levers are respectively arranged on the disk surface of the disc main body; After the torsion spring is twisted to store elastic potential energy, the two extending ends of the torsion spring are respectively clamped and arranged below the first limiting platform and below the second limiting platform; The handle joint is rotatably mounted on the lock housing and is located in the circle of the torsion spring; and the two protruding levers are respectively located above the two extending ends of the torsion spring; When the handle joint is rotated, the raised lever can be pressed against one of the extension ends, and the elastic potential energy of the torsion spring can be increased by driving the pressed extension end to increase the elastic potential energy of the torsion spring. Return the handle connector to its pre-rotation position. 4 . The child lock switch structure of a door lock according to claim 3 , wherein at least one of the two protruding levers is detachably arranged on the disk surface of the disk main body; At least one of the raised levers can rotate the handle joint, and then install the disassembled raised levers in situ, so that the handle piece can be reversely installed; The limiting cavity includes a first limiting cavity and a second limiting cavity; moreover, the limiting rod can adjustably slide in and out of the corresponding first limiting rods in the two installation directions of the handle piece. Empty slot or second limit slot. 5 . The child lock switch structure of a door lock according to claim 3 , wherein the inner side of the lock shell is provided with a rotation limit portion, and the rotation limit portion is arranged on the raised dial. 6 . The rotation path of the rod is used to limit the rotation stroke of the raised lever, so as to limit the rotation angle of the handle joint. 6 . The child lock switch structure of a door lock according to claim 1 , further comprising: a control mechanism comprising a control operation part and a connection assembly; 6 . The control operation part is connected with the limit rod through the connection assembly, so as to control the limit rod to adjustably slide into and out of the limit slot. 7. The child lock switch structure of a door lock according to claim 6, further comprising: a positioning elastic member and a switch base; The limit rod is slidably arranged in the switch base in an adjustable manner; The positioning elastic member is installed on the switch base and is located on the side of the limit rod; the positioning elastic member has an elastically deformed arc end surface; The limit rod is provided with a positioning chuck; when the limit rod extends into or escapes from the limit slot, the positioning chuck passes through the arc end face, and extends from one end of the arc end face. Move the side to the other side of the arc end face. 8. A door lock, characterized in that, comprising: a lock body, a handle piece and a door lock panel; The child lock switch structure according to any one of claims 1 to 7 is installed in the door lock panel; The handle piece is installed and connected to the handle joint, and is located on the front side of the door lock panel; The lock body and the handle joint are connected through a transmission assembly, and the handle piece is rotated to drive and control the lock tongue in the lock body to extend or retract; Wherein, the lock body includes the main lock tongue according to any one of claims 1 to 7. 9. A door, comprising: a door body and the door lock according to claim 8; the door lock is mounted on the door body. 10. An anti-locking method for a door lock, wherein the door lock includes a child lock and a rotating handle, characterized in that in the open state of the child lock, the handle is restricted to be pressed down and rotated, but can be lifted up. Lift the handle piece to realize the door lock anti-locking.

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