Child lock device of automobile door lock

Abstract

The child lock device of the automobile door lock comprises a shell, a lock cavity is formed in the shell, a cover plate used for sealing the lock cavity is arranged in the shell, a protruding column is fixedly arranged in the side face of the lock cavity, an opening arm is connected to the outside of the protruding column in a rotating mode, and the opening arm is connected with the lock cavity in a rotating mode. A control mechanism used for controlling the angle of the opening arm is further arranged in the lock cavity and comprises a locking plate arranged in the lock cavity, and a control block extending to the front side of the cover plate through the control sliding groove is arranged on the lower edge of the front side face of the locking plate. A user can lock or unlock the child lock by shifting the control block left and right, the control block can be clamped in the two containing grooves through the arrangement of the elastic piece, positioning is convenient, the user can conveniently know the current state of the child lock, control is more convenient for the user, in addition, the user can press the elastic piece downwards and then slide the control block, and the user experience is improved. And the child lock can be arranged by sliding the control block vigorously, so that the operation is convenient.

Description

Technical Field

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

[0002] The child lock in the car door lock, also known as the child safety lock, is an active safety device designed specifically to protect the safety of children in the car.

[0003] The main function of a child lock is to prevent the danger of children accidentally opening the door from inside the car while the vehicle is driving. There are two common forms of child locks. One is a knob type, which requires a key (or a key-like object) to be inserted into the corresponding hole to turn the knob switch to lock and unlock; the other is a toggle type, which switches between the lock and unlock positions by toggling the paddle, which is simpler to operate. However, the current toggle type child lock has defects such as unclear status of the child lock and difficulty in toggling, so it needs to be improved. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a child lock device for a car door lock to solve the problems mentioned in the above background technology.

[0005] The utility model provides the following technical solution: a child lock device for a car door lock, comprising a shell, a lock cavity is arranged in the shell, and a cover plate for closing the lock cavity is arranged in the shell, a convex column is fixed in the side of the lock cavity, an opening arm is rotatably connected to the outside of the convex column, and an unlocking mechanism is arranged in the lock cavity for unlocking a lock pin in the lock cavity according to the angle of the opening arm;

[0006] A control slide groove is provided in the cover plate, and a control mechanism for controlling the angle of the opening arm is also provided in the lock cavity, wherein the control mechanism comprises a locking plate provided in the lock cavity, and a control block extending to the front side of the cover plate through the control slide groove is provided at the lower edge of the front side of the locking plate, and the control block can slide left and right in the control slide groove;

[0007] An upwardly tilted spring sheet is integrally formed on the upper side of the control block, and a receiving groove for receiving the spring sheet is respectively provided on the left and right sides of the upper side of the control slide groove.

[0008] Preferably, the upper side surface of the spring sheet is arc-shaped, and the accommodating groove is an arc-shaped groove adapted to the shape of the upper side surface of the spring sheet.

[0009] Preferably, a child lock slot is provided in the opening arm, and the control mechanism also includes an abutment block provided at the upper edge of the rear side surface of the opening arm, the abutment block passes through the child lock slot and extends to the rear side of the opening arm, the convex column is externally rotatably connected to a driving arm, the driving arm has abutment portions and empty slot portions distributed up and down, the empty slot portion is concave to the left, the abutment block can abut against the abutment portion to connect the opening arm and the driving arm, and the empty slot portion is used to accommodate the abutment block.

[0010] Preferably, the control mechanism further comprises an inner handle pull rope connected to the driving arm, and a torsion spring is further provided in the lock cavity, one end of the torsion spring abuts against the lock cavity, and the other end of the torsion spring is connected to the driving arm.

[0011] Preferably, the abutment block is columnar, and the diameter of the abutment block is adapted to the left and right widths of the child lock slide groove.

[0012] Preferably, an anti-slip plate is integrally formed on the side surface of the abutment block, and the front side surface of the anti-slip plate is attached to the rear side surface of the opening arm.

[0013] Preferably, the locking plate is provided with a concave surface near the protruding column.

[0014] The utility model provides a child lock device for a car door lock, which has the following beneficial effects:

[0015] The user can lock or unlock the child lock by toggling the control block left or right, and a spring piece is provided at the upper edge of the control block. The setting of the spring piece enables the control block to be stuck in the two receiving grooves, which is convenient for positioning and allows the user to know the current state of the child lock, making it easier for the user to control. In addition, the user can press down the spring piece first and then slide the control block, or slide the control block vigorously to set the child lock, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the appearance of the utility model;

[0017] Figure 2 yes Figure 1 The enlarged schematic diagram of point A in the middle;

[0018] Figure 3 This is the front view of the utility model after removing the cover plate (the child lock is in the locked state);

[0019] Figure 4 This is the main view of the child lock in the utility model when it is in the unlocked state;

[0020] Figure 5 This is the front view of the utility model when the driving arm is pulled up;

[0021] Figure 6yes Figure 3 Schematic diagram of the appearance of the middle locking plate;

[0022] Figure 7 yes Figure 3 Schematic diagram of the appearance of the middle driving arm.

[0023] In the figure:

[0024] 11. Shell; 12. Lock cavity; 13. Cover plate; 14. Boss; 15. Locking plate; 16. Opening arm; 17. Control slide groove; 18. Control block; 19. Spring piece; 20. Accommodating groove; 21. Driving arm; 22. Slide groove; 23. Abutment block; 25. Abutment portion; 26. Empty groove portion; 27. Anti-slip plate; 28. Concave surface. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Reference Figure 1-Figure 7 According to an embodiment of a child lock device for a car door lock of the utility model, it comprises a shell 11, a lock cavity 12 is arranged in the shell 11, and a cover plate 13 for closing the lock cavity 12 is arranged in the shell 11, a convex column 14 is fixed in the side of the lock cavity 12, an opening arm 16 is rotatably connected to the outside of the convex column 14, and an unlocking mechanism for unlocking the lock pin in the lock cavity 12 according to the angle of the opening arm 16 is arranged in the lock cavity 12, and the unlocking mechanism is a prior art and will not be described in detail. In the child lock device for a car door lock, the opening arm 16 is rotated to drive the toggle plate to unlock the lock;

[0030] A control slot 17 is provided in the cover plate 13, and a control mechanism for controlling the angle of the opening arm 16 is also provided in the lock cavity 12. The control mechanism includes a locking plate 15 provided in the lock cavity 12, and a control block 18 is provided at the lower edge of the front side of the locking plate 15 and extends to the front side of the cover plate 13 through the control slot 17, and the control block 18 can slide left and right in the control slot 17.

[0031] The control block 18 is a child lock. When the control block 18 slides to the right, the control mechanism fails. In order to enable the control block 18 to be positioned left and right in the control slide groove 17, an upward-tilted spring piece 19 is integrally formed on the upper side of the control block 18. The left and right sides of the upper side of the control slide groove 17 are respectively provided with a receiving groove 20 for receiving the spring piece 19. When the control block 18 and the receiving groove 20 are in the same left and right position, the spring piece 19 will bounce upward and enter the receiving groove 20. At this time, the left and right position of the control block 18 is restricted.

[0032] In the present embodiment, in order to make the control block 18 slide smoothly left and right, the upper side surface of the spring piece 19 is arc-shaped, and the accommodating groove 20 is an arc-shaped groove adapted to the shape of the upper side surface of the spring piece 19. With this arrangement, the user only needs to exert a little force to make the control block 18 move left and right.

[0033] A child lock slot 22 is provided in the opening arm 16, and the control mechanism also includes an abutment block 23 provided at the upper edge of the rear side surface of the opening arm 16, and the abutment block 23 passes through the child lock slot 22 and extends to the rear side of the opening arm 16, and the boss 14 is externally rotatably connected to a driving arm 21, and the driving arm 21 has an abutment portion 25 and an empty groove portion 26 distributed up and down, and the empty groove portion 26 is concave to the left, and the abutment block 23 can abut against the abutment portion 25 to connect the opening arm 16 and the driving arm 21, and the empty groove portion 26 is used to accommodate the abutment block 23.

[0034] In addition, the control mechanism also includes an inner handle pull rope connected to the driving arm 21, and the driving arm 21 is provided with a mounting hole 29 for installing the inner handle pull rope. A torsion spring is also provided in the lock cavity 12, one end of the torsion spring abuts against the lock cavity 12, and the other end of the torsion spring is connected to the driving arm 21.

[0035] Specific working principle: When the control block 18 abuts against the left side of the control slide groove 17, the abutment block 23 slides to the upper side of the child lock slide groove 22, and enables the abutment block 23 to abut against the abutment portion 25. Then, when the user pulls the driving arm 21 through the inner handle rope and rotates it clockwise, the abutment portion 25 will drive the opening arm 16 to rotate through the abutment block 23, and at this time, the opening arm 16 can unlock the lock pin in the lock cavity 12 through the unlocking mechanism. During the above-mentioned rotation of the opening arm 16, the locking plate 15 will also swing, and the locking plate 15 will swing with the control block 18 as the axis, that is, the swing of the locking plate 15 will not cause the control block 18 to move left and right, and the spring piece 19 will still be located in the accommodating groove 20 on the left, and the child lock is in an unlocked state.

[0036] When the child lock needs to be locked, that is, the user cannot pull the handle in the car to drive the inner handle pull wire and thereby unlock the lock pin, the user pushes the control block 18 to the right and allows the spring 19 to enter the accommodating groove 20 on the right side. During the sliding of the control block 18 to the right, the abutment block 23 will move downward in the child lock slide groove 22 until the abutment block 23 enters the abutment portion 25. After that, the driving arm 21 will not contact the abutment block 23 when it rotates, that is, the movement of the driving arm 21 will not drive the opening arm 16 to rotate.

[0037] When the control block 18 moves left and right, the abutment block 23 rotates in the child lock slot 22. In order to avoid wear of the abutment block 23, the abutment block 23 is columnar, and in order to enable the left and right movement of the control block 18 to cause the abutment block 23 to move up and down immediately, the diameter of the abutment block 23 is adapted to the left and right width of the child lock slot 22.

[0038] In order to prevent the abutting block 23 from falling out of the child lock slide groove 22 , an anti-falling plate 27 is integrally formed on the side of the abutting block 23 , and the front side of the anti-falling plate 27 is attached to the rear side of the opening arm 16 .

[0039] When the child lock is in the unlocked state, in order to prevent the locking plate 15 from interfering with the boss 14 when the driving arm 21 drives the abutment block 23 and the locking plate 15 to swing, the locking plate 15 is provided with a concave surface 28 near the boss 14 .

[0040] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A child lock device for a car door lock, comprising a housing (11), a lock cavity (12) being provided in the housing (11), and a cover plate (13) for closing the lock cavity (12) being provided in the housing (11), characterized in that: A convex column (14) is fixedly provided in a side surface of the lock cavity (12); an opening arm (16) is rotatably connected to the outside of the convex column (14); and an unlocking mechanism is provided in the lock cavity (12) for unlocking a lock pin in the lock cavity (12) according to an angle of the opening arm (16); A control slide groove (17) is provided in the cover plate (13), and a control mechanism for controlling the angle of the opening arm (16) is also provided in the lock cavity (12), the control mechanism comprising a locking plate (15) provided in the lock cavity (12), a control block (18) extending through the control slide groove (17) to the front side of the cover plate (13) is provided at the lower edge of the front side of the locking plate (15), and the control block (18) is capable of sliding left and right in the control slide groove (17); An upwardly tilted spring sheet (19) is integrally formed on the upper side of the control block (18), and a receiving groove (20) for receiving the spring sheet (19) is respectively provided on the left and right sides of the upper side of the control slide groove (17).

2. A child lock device for a car door lock according to claim 1, characterized in that: The upper side surface of the spring sheet (19) is arc-shaped, and the accommodating groove (20) is an arc-shaped groove that matches the shape of the upper side surface of the spring sheet (19).

3. A child lock device for a car door lock according to claim 1, characterized in that: The opening arm (16) is provided with a child lock slide groove (22), and the control mechanism further comprises an abutment block (23) provided at the upper edge of the rear side surface of the opening arm (16), the abutment block (23) passes through the child lock slide groove (22) and extends to the rear side of the opening arm (16), the boss (14) is externally rotatably connected to a driving arm (21), the driving arm (21) has an abutment portion (25) and an empty groove portion (26) distributed up and down, the empty groove portion (26) is concave to the left, the abutment block (23) can abut against the abutment portion (25) to connect the opening arm (16) and the driving arm (21), and the empty groove portion (26) is used to accommodate the abutment block (23).

4. A child lock device for a car door lock according to claim 3, characterized in that: The control mechanism further comprises an inner handle pull rope connected to the driving arm (21), and a torsion spring is further provided in the lock cavity (12), one end of the torsion spring abuts against the lock cavity (12), and the other end of the torsion spring is connected to the driving arm (21).

5. The child lock device for a car door lock according to claim 3, characterized in that: The abutment block (23) is columnar, and the diameter of the abutment block (23) is adapted to the left and right widths of the child lock slide groove (22).

6. A child lock device for a car door lock according to claim 3, characterized in that: An anti-slip plate (27) is integrally formed on the side surface of the abutment block (23), and the front side surface of the anti-slip plate (27) is attached to the rear side surface of the opening arm (16).

7. The child lock device for a car door lock according to claim 1, characterized in that: The locking plate (15) is provided with a concave surface (28) near the protruding column (14).

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