Child lock structure of door lock

Abstract

The child lock structure of the door lock comprises an inner panel, an inner handle is rotationally connected to the inner panel, the end, extending into the inner panel, of the inner handle is connected with a rotating disc capable of rotating along with the inner handle, the rotating disc is connected with a shifting block used for being connected with a main spring bolt, a clutch structure is arranged between the rotating disc and the shifting block, and the clutch structure has a separation state and a combination state. When the clutch structure is in a separation state, the inner handle is rotated to drive the rotating disc to rotate relative to the shifting block, when the clutch structure is in a combination state, the inner handle is rotated to drive the rotating disc and the shifting block to synchronously rotate together, and a clutch driving mechanism located below the rotating disc and the shifting block is further arranged on the inner side of the inner panel. And the clutch driving mechanism is used for switching the separation and combination states of the clutch structure. When a user needs to open the door inside the door, the state of the clutch structure is switched only through the clutch driving mechanism, the rotating disc and the shifting block can be combined, and at the moment, the door can be opened through the handle.

Description

Technical Field

[0001] The utility model relates to the technical field of door locks, in particular to a child lock structure of a door lock. Background Art

[0002] With the advancement of society and technology, people's demands for home security are increasing. Especially in homes with children, door lock design must not only ensure convenience and safety for daily use, but also pay special attention to preventing children from accidentally operating the door. Existing door lock designs often overlook this aspect. Most traditional door lock systems lack effective child lock mechanisms. This means that children may accidentally open the door out of curiosity or without adult supervision, posing a potential safety risk.

[0003] Traditional door lock systems typically consist of several components: an outer panel, an inner panel, a deadbolt mechanism, a lock body, and inner and outer handles. Users must rotate the inner handle to trigger the deadbolt to retract, unlocking the door. However, this simple mechanical linkage is easily mimicked and manipulated by children, especially when left alone. They may attempt to imitate an adult's movements to open the door.

[0004] Therefore, there is an urgent need for a door lock structure that can effectively prevent children from misoperating the door, does not affect the normal use of adults, and can be quickly opened in an emergency. Utility Model Content

[0005] The utility model overcomes the deficiencies of the above-mentioned technology and provides a child lock structure for a door lock.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A child lock structure for a door lock comprises an inner panel, wherein the inner panel is rotatably connected to an inner handle, and one end of the inner handle extending into the inner panel is connected to a turntable that can follow the inner handle to turn, and a dial block for connecting to a main lock tongue is connected to the turntable, and a clutch structure is provided between the turntable and the dial block, and the clutch structure includes a separation and a combination state. When the clutch structure is in the separation state, rotating the inner handle drives the turntable to rotate relative to the dial block. When the clutch structure is in the combination state, rotating the inner handle can drive the turntable and the dial block to rotate synchronously together. A clutch drive mechanism is also provided on the inner side of the inner panel and is located below the turntable and the dial block, and the clutch drive mechanism is used to switch the separation and combination states of the clutch structure.

[0008] Furthermore, the clutch structure includes a first limiting groove opened at the lower end of the turntable and a push rod elastically connected to the lower end of the shift block. The clutch drive mechanism can drive the push rod upward so that the push rod is inserted into the first limiting groove. At this time, the clutch structure is in a coupled state, and rotating the inner handle can drive the turntable and the shift block to rotate synchronously.

[0009] Furthermore, a guide groove is provided at the lower end of the shift block, the lower end of the push rod extends downward from the shift block, and the upper end is elastically connected to the guide groove through a spring.

[0010] Furthermore, the clutch drive mechanism includes a slide rail symmetrically arranged on the inner panel, and a push plate slidably connected to the slide rail, and the left and right sides of the push plate are elastically connected to the inner panel via torsion springs.

[0011] Furthermore, the push plate is symmetrically provided with connecting columns, and the inner panel is symmetrically provided with connecting shafts located on both sides of the slide rail. One end of the torsion spring is connected to the connecting column on the corresponding side, and the other end is connected to the connecting shaft on the corresponding side.

[0012] Furthermore, the inner panel is provided with a limiting column located between the two slide rails, and the push plate is correspondingly provided with a waist-shaped hole for the limiting column to penetrate and slide therein.

[0013] Furthermore, a through hole is provided on the inner panel and is located between the two slide rails, and the push plate includes a toggle key that passes through the through hole and is exposed on the inner panel.

[0014] Furthermore, the through hole is provided with a movable plate that can move following the movement of the shift block, and the movable plate is provided with a color indication mark. The outer wall surface of the inner panel is also provided with a groove located on the outer periphery of the through hole, and the groove is provided with a locking mark and an unlocking mark, the locking mark is arranged above the through hole, and the unlocking mark is arranged below the through hole.

[0015] Furthermore, a reversing screw is installed on the turntable, the shift block is semicircular, and second limiting grooves are symmetrically provided at both ends of the shift block. The second limiting grooves are used to cooperate with the reversing screw to relatively limit and fix the turntable and the shift block, and a mounting hole for connecting the main lock tongue is provided on the shift block.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This case utilizes a clutch structure between the turntable and the dial block, enabling the turntable and dial block to engage and disengage, thereby implementing the corresponding child lock functions. When the user needs to open the door from inside, they simply switch the clutch structure's state via the clutch drive mechanism, engaging the turntable and dial block. The door can then be opened via the handle. Under normal circumstances, when no one is using the clutch drive mechanism, the turntable and dial block are separated and do not rotate together. In other words, the handle drives the turntable in an idling state, effectively preventing children from accidentally opening the door. This structure is simple and easy to implement. The clutch state can be switched with a simple operation, allowing the door lock to quickly restore normal function when needed, ensuring safety in emergency situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the overall structural diagrams of the child lock structure of the door lock in this case.

[0019] Figure 2 This is a schematic diagram of the overall structure of the child lock structure of the door lock in this case.

[0020] Figure 3 This is the structural diagram of the block in this case.

[0021] Figure 4 This is the second schematic diagram of the overall structure of the child lock structure of the door lock in this case. DETAILED DESCRIPTION

[0022] The following examples further illustrate the features of the present invention and other related features to facilitate understanding by those skilled in the art:

[0023] like Figures 1 to 4As shown, this case provides a child lock structure for a door lock, including an inner panel 100, which is used to provide an installation location for other components and fix the internal structure of the door lock. It should be noted that the structure of the inner panel 100 described in this case and the inner panel 100 shown in the accompanying drawings is simplified for the convenience of description. During specific implementation, the specific structure of the inner panel 100 and other components that need to be installed on the inner panel 100 can refer to the common structures in the field. The inner panel 100 is rotatably connected to the inner handle 1, and the end of the inner handle 1 extending into the inner panel 100 is connected to a turntable 2 that can rotate with the inner handle 1, and the motion is transmitted to the turntable by rotating the inner handle 1. The turntable 2 is connected to a dial block 3 for connecting to the main lock tongue. During specific implementation, the dial block 3 is connected to the main lock tongue, so that the main lock tongue can be driven to move by the rotation of the dial block 3. A clutch mechanism is located between the turntable 2 and the selector 3. The clutch mechanism has two engaged and disengaged states. When the clutch mechanism is disengaged, rotating the inside handle 1 drives the turntable 2 relative to the selector 3. When the clutch mechanism is engaged, rotating the inside handle 1 drives both the turntable 2 and the selector 3 to rotate synchronously. When the clutch mechanism is disengaged, the rotational force of the inside handle 1 is not transmitted to the selector 3, meaning that the main lock tongue cannot retract, preventing the door from opening. When the clutch mechanism is engaged, the rotational force of the inside handle 1 drives the selector 3 to rotate synchronously, retracting the main lock tongue relative to the selector 3, allowing the door to open. Switching between these two states effectively prevents children from accidentally operating the door lock while still allowing the door lock to operate normally when needed. A clutch drive mechanism is also located on the inside of the inner panel 100, below the turntable 2 and selector 3. The clutch drive mechanism switches the clutch mechanism between the engaged and disengaged states. This child lock mechanism simplifies the process of enabling and disabling the child lock function, allowing users to quickly and easily set the door lock's operating mode.

[0024] Continue as Figures 1-4 As shown, the clutch mechanism includes a first retaining groove 21 at the lower end of the turntable 2 and a push rod 31 elastically connected to the lower end of the selector block 3. The clutch drive mechanism can push the push rod 31 upward, inserting it into the first retaining groove 21. In this state, the clutch mechanism is engaged, and rotating the inside handle 1 causes the turntable 2 and selector block 3 to rotate synchronously. Conversely, because the push rod 31 is elastically connected to the lower end of the selector block 3, when no external pressure is applied, it is positioned outside the first retaining groove 21. In other words, the turntable 2 and selector block 3 are normally separated, preventing children from accidentally unlocking the door. Generally, when the door is installed at a high position, children are more likely to pull the clutch drive mechanism downward, and this is done subconsciously. They are less likely to think of pushing the clutch drive mechanism upward, making it difficult to operate. The design takes children's usage habits into consideration, making it easier to pull the clutch drive mechanism downward, reducing the chance of children accidentally activating the child lock feature.

[0025] Further, if Figure 3 As shown, a guide groove 32 is defined at the lower end of the shift block 3. The guide groove 32 provides guidance and positioning for the push rod 31, ensuring that the push rod 31 does not deviate during its upward and downward movement. This improves the precision and stability of the push rod 31's movement. The lower end of the push rod 31 extends downward from the shift block 3, while the upper end is elastically connected to the guide groove 32 via a spring 33. The spring 33 provides a reset force for the push rod 31, maintaining it in its initial position when no external force is applied. This ensures that the push rod 31 does not affect the normal operation of other components when not in use, while also enabling quick response when needed.

[0026] like Figure 1-Figure 2 As shown, the clutch drive mechanism includes a slide rail 101 symmetrically arranged on the inner panel 100 and a push plate 4 slidably connected to the slide rail 101. The slide rail 101 provides a guide path for the push plate 4 to ensure that it slides smoothly without deviating from the track. The smoothness and reliability of the operation are increased, wear is reduced, and the service life is extended. The user can manually push the push plate 4 to drive the push rod 31, thereby realizing the switching of the clutch structure, simplifying the operation process of the clutch drive mechanism, and allowing the user to intuitively control the opening and closing of the child lock function. This structure is simple, stable and convenient. The left and right sides of the push plate 4 are elastically connected to the inner panel 100 respectively by a torsion spring 5, and the torsion spring 5 is used to cooperate with the push plate 4 to support it after it is pushed into place.

[0027] Continue as Figure 1-Figure 2 As shown, specifically, push plate 4 is symmetrically provided with connecting posts 41, and inner panel 100 is symmetrically provided with connecting shafts 102, one on each side of the slide rail 101. One end of a torsion spring 5 is connected to the connecting post 41 on the corresponding side, and the other end is connected to the connecting shaft 102 on the corresponding side. The force of torsion spring 5 stabilizes push plate 4 after it is pushed upward, preventing it from sliding downward and ensuring the stability of the clutch mechanism in the engaged state. When push plate 4 pushes upward against push rod 31, the clutch mechanism is engaged, and rotating the inner handle 1 drives the turntable 2 and the shift block 3 to rotate synchronously.

[0028] Continue as Figure 1-Figure 2 As shown, the inner panel 100 is provided with a retaining post 103 positioned between the two slide rails 101. The push plate 4 is provided with a corresponding waist-shaped hole 42 for the retaining post 103 to penetrate and slide within. The retaining post 103 and the waist-shaped hole 42 in the push plate 4 cooperate to provide a positioning limit, ensuring that the push plate 4 does not deviate laterally during sliding. This improves the straightness and smoothness of the push plate's sliding motion, reducing operational errors caused by unstable sliding. Furthermore, it effectively limits the travel of the push plate 4, facilitating the switching of the clutch mechanism.

[0029] In a specific implementation, three waist-shaped holes 42 and three limiting columns 103 are respectively provided.

[0030] like Figures 1-4 As shown, to facilitate quicker switching between the clutch states from the outside, a through-hole 104 is provided on the inner panel 100, located between the two slide rails 101. The push plate 4 includes a toggle key 43 that extends through the through-hole 104 and is exposed on the inner panel. The toggle key 43 is a part of the push plate 4, its shape and size adapted to the through-hole in the inner panel, typically being cylindrical or another easily grippable shape. The user can manually push the push plate by toggling the toggle key 43, thereby moving the push rod 31 upward to switch the clutch state. This makes operation more intuitive and convenient, enhancing the user experience.

[0031] Continue as Figures 1-4 As shown, a movable plate 6 is further provided in the through hole 104, which moves in response to the movement of the shift block 3. The movable plate 6 is provided with a color indicator. The movable plate 6 moves in response to the movement of the shift block 3, displaying different color indicators to provide the user with an intuitive understanding of the current clutch mechanism status. This enhances intuitive operation, allowing the user to determine whether the child lock function is activated or deactivated by the color change. In specific implementations, the color indicators are red and green, with red indicating the child lock is locked and green indicating the child lock is unlocked. The outer wall of the inner panel 100 also includes a recess 105 located around the through hole 104. The recess 105 includes a lock indicator 106 and an unlock indicator 107. The lock indicator is located above the through hole 104, while the unlock indicator 107 is located below the through hole 104. The provision of the lock indicator 106 and the unlock indicator 107 improves user convenience. In specific implementations, the color indicator can be used in conjunction with the unlock indicator or provided separately.

[0032] like Figure 1-Figure 2 As shown, a reversing screw 22 is installed on the turntable 2, which can be used to change the door opening direction of the door lock. The shift block 3 is semicircular in shape, and second limiting slots 34 are symmetrically provided at both ends of the shift block 3. The second limiting slots 34 are used to cooperate with the reversing screw 22 to relatively limit and fix the turntable 2 and the shift block 3. By cooperating with the second limiting slots 34, the relative position between the turntable 2 and the shift block 3 is achieved, so that the child lock function can still be realized after reversing. The shift block 3 is provided with a mounting hole 35 for connecting to the main lock tongue. In this embodiment, in order to cooperate with the reversing screw 22 to realize the child lock function after reversing, two first limiting slots 21 are provided symmetrically in the upper and lower parts.

[0033] As mentioned above, this case protects a child lock structure of a door lock, and all technical solutions that are the same or similar to this case should be deemed to fall within the scope of protection of this case.

Claims

1. A child lock structure for a door lock, comprising an inner panel (100), wherein an inner handle (1) is rotatably connected to the inner panel (100), characterized in that: One end of the inner handle (1) extending into the inner panel (100) is connected to a turntable (2) that can rotate along with the inner handle (1); a shift block (3) for connecting to a main lock tongue is connected to the turntable (2); a clutch structure is provided between the turntable (2) and the shift block (3); the clutch structure includes a separation state and a combination state; when the clutch structure is in the separation state, rotating the inner handle (1) drives the turntable (2) to rotate relative to the shift block (3); when the clutch structure is in the combination state, rotating the inner handle (1) can drive the turntable (2) and the shift block (3) to rotate synchronously; a clutch drive mechanism is further provided on the inner side of the inner panel (100) and is located below the turntable (2) and the shift block (3); the clutch drive mechanism is used to switch the separation state and the combination state of the clutch structure.

2. A child lock structure for a door lock according to claim 1, characterized in that: The clutch structure comprises a first limiting groove (21) provided at the lower end of the turntable (2) and a push rod (31) elastically connected to the lower end of the shift block (3); the clutch driving mechanism can drive the push rod (31) upward so that the push rod (31) is inserted into the first limiting groove (21); at this time, the clutch structure is in a coupled state; rotating the inner handle (1) can drive the turntable (2) and the shift block (3) to rotate synchronously.

3. The child lock structure of a door lock according to claim 2, characterized in that: The lower end of the shift block (3) is provided with a guide groove (32); the lower end of the push rod (31) extends downward from the shift block (3); and the upper end is elastically connected to the guide groove (32) via a spring (33).

4. The child lock structure of a door lock according to claim 1, characterized in that: The clutch drive mechanism comprises a slide rail (101) symmetrically arranged on the inner panel (100), and a push plate (4) slidably connected to the slide rail (101); the left and right sides of the push plate (4) are elastically connected to the inner panel (100) via torsion springs (5) respectively.

5. The child lock structure of a door lock according to claim 4, characterized in that: The push plate (4) is symmetrically provided with connecting columns (41), the inner panel (100) is symmetrically provided with connecting shafts (102) located on both sides of the slide rail (101), and one end of the torsion spring (5) is connected to the connecting column (41) on the corresponding side, and the other end is connected to the connecting shaft (102) on the corresponding side.

6. The child lock structure of a door lock according to claim 4, characterized in that: The inner panel (100) is provided with a limiting column (103) located between the two slide rails (101), and the push plate (4) is correspondingly provided with a waist-shaped hole (42) for the limiting column (103) to penetrate and slide therein.

7. The child lock structure of a door lock according to claim 4, characterized in that: The inner panel (100) is provided with a through hole (104) located between the two slide rails (101), and the push plate (4) includes a toggle key (43) passing through the through hole (104) and exposed on the inner panel.

8. The child lock structure of a door lock according to claim 7, characterized in that: The through hole (104) is provided with a movable plate (6) that can move following the shifting of the shifting block (3), and the movable plate is provided with a color indication mark. The outer wall surface of the inner panel (100) is also provided with a groove (105) located on the outer periphery of the through hole (104), and the groove (105) is provided with a locking mark (106) and an unlocking mark (107), the locking mark is arranged above the through hole (104), and the unlocking mark (107) is arranged below the through hole (104).

9. A child lock structure for a door lock according to any one of claims 1 to 8, characterized in that: A reversing screw (22) is installed on the turntable (2), the shift block (3) is semicircular, and second limiting grooves (34) are symmetrically provided at both ends of the shift block (3), and the second limiting grooves (34) are used to cooperate with the reversing screw (22) to relatively limit and fix the turntable (2) and the shift block (3), and a mounting hole (35) for connecting the main lock tongue is provided on the shift block (3).

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