A child lock for a vehicle door

Abstract

The application discloses a child lock for vehicle door, which comprises a lock shell, an opening and closing device and an unlocking device. The opening and closing device comprises an inner opening rocker arm, an inner opening swing arm and an automatic reset reset mechanism. The inner opening swing arm is used to open and close the door. The inner opening rocker arm and the inner opening swing arm are both rotatably arranged on the lock shell. The unlocking device comprises a lock shifting rod, a buckle mechanism for connecting the inner opening rocker arm and the inner opening swing arm and a control mechanism for controlling the working of the buckle mechanism. The lock shifting rod is rotatably arranged on the lock shell. The lock shell is provided with an inner opening for the swing of the inner opening rocker arm. The control mechanism controls the movement of the buckle mechanism to the state of unlocking after connecting the inner opening rocker arm and the inner opening swing arm. The reset mechanism is used to return the inner opening rocker arm and the inner opening swing arm to the initial position. The application has the effect of realizing the unlocking and locking of children.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle door locks, in particular to a vehicle door child lock. BACKGROUND

[0002] With the increasing popularity of automobiles, especially new energy vehicles, people have shown great interest in them. In order to eliminate the safety hazard of children opening the vehicle door during driving, an automobile child lock is configured on the rear door lock of the vehicle. The child lock locks the rear door, and the user cannot open the door in the vehicle before the child lock is unlocked. Only after the child lock is unlocked can the door be normally opened.

[0003] A patent with the patent number CN116122676A in the related art discloses an automobile door child lock, which comprises a shell, an opening and closing component, an unlocking component, a mechanical insurance component, and a deinsurance component. The opening and closing component comprises a large lock tongue and a small lock tongue. The unlocking component comprises a swing frame, a linkage frame, and an inner opening swing arm. The mechanical insurance component comprises a mechanical swing arm, and the deinsurance component comprises a motor and a cam. The linkage frame cooperates with the cam. The child lock is in a lock state or an unlock state by adjusting the mechanical swing arm. If the child lock is in the lock state, the deinsurance component can be started. The motor drives the cam to rotate, and the linkage block of the linkage frame moves in the sliding groove. At this time, the opening and closing pull rope is pulled, the inner opening swing arm swings and presses the linkage block, the linkage block drives the swing frame to swing, the first block pushes the small lock tongue, the small lock tongue is separated from the large lock tongue, and the large lock tongue rotates to the unlock state. The child lock not only plays a protective role, but also can be temporarily released at the required time, which is safe and convenient to use.

[0004] According to the related art in the above, the inventors believe that the following defects exist: when the child lock needs to be opened, the small lock tongue swings to the buckle with the large lock tongue. However, the child lock cannot be buckled if the angle of the small lock tongue and the large lock tongue is not aligned during the swinging process. SUMMARY

[0005] In order to improve the problem of inconvenience in aligning during the swinging process of the child lock, the present application provides a vehicle door child lock.

[0006] The vehicle door child lock provided by the present application adopts the following technical scheme:

[0007] A vehicle door child lock comprises a lock shell, an opening and closing device, and an unlocking device.

[0008] The opening and closing device comprises an inner opening swing arm, an inner opening swing arm, and an automatic reset reset mechanism. The inner opening swing arm realizes door opening / closing, and the inner opening swing arm and the inner opening swing arm are rotationally arranged on the lock shell.

[0009] The unlocking device comprises a lock lever, a buckle mechanism for connecting the inner opening rocker arm and the inner opening swing arm, and a control mechanism for controlling the buckle mechanism to work, and the lock lever is rotationally arranged on the lock shell;

[0010] The lock shell is provided with an inner opening for the inner opening rocker arm to swing;

[0011] The control mechanism controls the buckle mechanism to move to the unlocking state after connecting the inner opening rocker arm and the inner opening swing arm, and the reset mechanism enables the inner opening rocker arm and the inner opening swing arm to return to the initial position.

[0012] Optionally, the buckle mechanism comprises a lock slider, an inner opening rocker plate, an inner opening swing plate, and a lock catch plate, the inner opening rocker plate is arranged on the inner opening rocker arm, the lock catch plate is arranged on the lock slider, the inner opening swing plate is arranged on the inner opening swing arm, the lock slider is arranged on the lock lever, the inner opening rocker plate, the lock catch plate, and the inner opening swing plate are all arranged in a concave manner, and the lock slider is movably arranged between the gap between the inner opening rocker plate and the inner opening swing plate.

[0013] Optionally, the lock lever is fixedly connected with a lock column, the lock shell is provided with a support column for the lock column to rotate, the lock column is provided with a ring block, and the support column is provided with a ring groove for the ring block to rotate.

[0014] Optionally, the lock slider is arranged in an arc shape, the lock lever is provided with a fixed groove, and the lock slider is arranged in the fixed groove.

[0015] Optionally, the reset mechanism comprises a torsion spring, one end of the torsion spring is fixed to the lock shell, and the other end is connected to the inner opening rocker arm and the inner opening swing arm.

[0016] Optionally, the inner opening rocker arm and the inner opening swing arm are both provided with a supporting plate for locking the torsion spring, the supporting plate is provided with a triangular supporting groove, and one end of the torsion spring is clamped in the supporting groove.

[0017] Optionally, the control mechanism comprises a control rod and a driving assembly for driving the control rod, the control rod is fixedly connected to the side of the lock lever away from the lock slider, the lock shell is provided with a control groove for the control rod to move, the control groove is arranged in a penetrating manner, the control rod is movably arranged in the control groove, and the center of the cross section circle of the control groove and the center of the cross section circle of the support column are arranged in a concentric manner.

[0018] Optionally, the driving assembly comprises a driving motor, two mutually perpendicular first bevel gears, a second bevel gear and a trigger part for avoiding child mis-touch, the driving motor is arranged in the lock shell, the first bevel gears are arranged on the outer wall of the lock column, and the second bevel gear is rotationally arranged in the lock shell and controlled by the driving motor.

[0019] Optionally, the trigger part comprises an electromagnet, a gear, a rack, a spring and a power group for pushing the rack movement, the electromagnet is used for connecting the second bevel gear and the driving motor, the gear is coaxially arranged with the second bevel gear, the rack is meshingly connected with the gear, the rack movement direction is along the axis direction of the first bevel gear, and the spring is used for connecting one end of the rack and the lock shell.

[0020] Optionally, the power group comprises a power plate and two power rods, the power plate is hingedly connected to one end of the rack, the lock shell is provided with a power port, the two power rods are elastically arranged in the two power ports respectively, the two power rods correspond to two ends of the power plate respectively, and the power plate and the rack are hingedly connected at the midpoint of the power plate.

[0021] In summary, the present application has at least one of the following beneficial technical effects:

[0022] 1. When the driving motor controls the rotation of the first bevel gear, the lock column is controlled to start rotating under the transmission of the second bevel gear, the lock slide rod drives the lock slide block to start moving, when the lock slide block moves to the gap between the inner opening rocker arm and the inner opening swing arm, the inner opening rocker arm and the inner opening swing arm are connected at this time, that is, in the unlocked state, when the inner opening rocker arm is controlled to rotate, the inner opening swing arm follows to rotate, and the lock can be opened; when the lock slide block moves away from the inner opening rocker arm and the inner opening swing arm, the inner opening rocker arm and the inner opening swing arm are separated, the inner opening rocker arm is controlled to move, and the inner opening swing arm cannot be driven to move, that is, in the locked state;

[0023] 2. When in the locked state, the spring is in a free deformation state, when power failure occurs, the second rack and the driving motor are separated, at this time, if pressure is applied to one power rod, since there is a distance between the power rod and the power plate, the power plate will swing only when the pressure continues to be applied, at this time, the rack cannot be driven, only when both power rods are simultaneously pressed, the elastic member and the spring are pressed, at this time, the lock slide block will move to the gap between the inner opening swing arm and the inner opening rocker arm, at this time, the child lock is unlocked, and the vehicle door can be opened, and the above design reduces the risk of child mis-touch when the driving motor is powered off to the greatest extent. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1is a whole structure schematic diagram of the embodiment of the application;

[0025] Figure 2 is a front view of the embodiment of the application;

[0026] Figure 3 is a driving assembly schematic diagram of the embodiment of the application;

[0027] Figure 4 is a driving assembly right view of the embodiment of the application.

[0028] Reference signs: 1, lock shell; 2, inner opening rocker arm; 3, inner opening swing arm; 4, lock push rod; 5, inner opening; 6, lock slider; 7, inner opening rocker plate; 8, inner opening swing plate; 9, lock catch plate; 10, lock column; 11, support column; 12, fixed groove; 13, torsional spring; 14, supporting plate; 15, supporting groove; 16, control rod; 17, control groove; 18, driving motor; 19, first bevel gear; 20, second bevel gear; 21, electromagnet; 22, gear; 23, rack; 24, spring; 25, power plate; 26, power rod; 27, power port. DETAILED DESCRIPTION

[0029] The following will be described in detail with reference to the accompanying drawings Figures 1-4 The application is further described in detail.

[0030] The embodiment of the application discloses a car door child lock. Referring to Figures 1-4 A car door child lock comprises a lock shell 1, an opening and closing device and an unlocking device; the opening and closing device is used for realizing opening and closing of the car lock, and the unlocking device is used for realizing opening and closing of the child lock; the opening and closing device comprises an inner opening rocker arm 2, an inner opening swing arm 3 and an automatic reset reset mechanism; the inner opening swing arm 3 realizes opening and closing of the door; the inner opening rocker arm 2 and the inner opening swing arm 3 are both rotationally arranged on the lock shell 1; the inner opening rocker arm 2 is arranged on the outer side of the inner opening swing arm 3; the inner opening rocker arm 2 and the inner opening swing arm 3 are both provided with a rotating hole; the inner opening swing arm 3 is provided with a rotating block; the rotating block is arranged in the rotating hole of the inner opening rocker arm; the rotating block is also provided with a rotating hole; the lock shell 1 is provided with a stepped rotating column; the inner opening rocker arm 2 and the inner opening swing arm 3 are both sleeved on the rotating column; and the other end of the rotating column is buckled with a disc; under the restriction of the disc and the steps of the rotating column, the inner opening rocker arm 2 and the inner opening swing arm 3 are both rotated outside the rotating column.

[0031] The lock shell 1 is provided with an inner opening 5 for swinging of the inner opening rocker arm 2; the tail end of the inner opening rocker arm 2 extends out of the inner opening 5 and swings in the inner opening 5; the two ends of the inner opening 5 along the length direction are closed; when the tail end of the inner opening rocker arm 2 is located at the two ends of the inner opening 5, the child lock is opened / closed respectively.

[0032] The unlocking device comprises a lock lever 4, a clamping mechanism for opening the inner opening rocker arm 2, and a control mechanism for controlling the operation of the clamping mechanism, the lock lever 4 is rotationally arranged on the lock shell 1; the control mechanism controls the clamping mechanism to move to the state of connecting the inner opening rocker arm 2 with the inner opening swing arm 3 to realize the unlocking state, and the reset mechanism realizes the return of the inner opening rocker arm 2 and the inner opening swing arm 3 to the initial position; the lock lever 4 is provided in a sheet shape, the clamping mechanism comprises a lock slider 6, an inner opening rocker plate 7, an inner opening swing plate 8 and a lock clamping plate 9, the inner opening rocker plate 7 is arranged on the inner opening rocker arm 2, the lock clamping plate 9 is arranged on the lock slider 6, the inner opening swing plate 8 is arranged on the inner opening swing arm 3, the lock slider 6 is arranged on the lock lever 4, the inner opening rocker plate 7, the lock clamping plate 9 and the inner opening swing plate are all arranged in a concave shape, the lock slider 6 is movably arranged between the gaps between the inner opening rocker plate 7 and the inner opening swing plate 8, and the inner opening rocker plate 7 is arranged close to the tail end of the inner opening rocker arm 2; when the lock slider 6 moves between the inner opening rocker plate 7 and the inner opening swing plate 8, the inner opening swing arm 3 moves together with the inner opening rocker arm 2, that is, the unlocking state.

[0033] The lock slider 6 is provided in an arc shape, the lock lever 4 is provided with a fixed groove 12, the lock slider 6 is arranged in the fixed groove 12, the lock lever 4 is fixedly connected with a supporting arc plate, the supporting arc plate is used for supporting the lock slider 6, the supporting arc plate is provided with a supporting block, the fixed groove 12 is arranged on the supporting block, and the fixed groove 12 is also provided in an arc shape and is matched with the lock slider 6, the lock slider 6 is in interference fit or bonded in the fixed groove 12, so as to realize the fixing effect between the lock slider 6 and the lock lever 4.

[0034] The lock lever 4 is fixedly connected with a lock column 10, the lock shell 1 is provided with a supporting column 11 for rotating the lock column 10, the lock column 10 is provided with a ring block, the supporting column 11 is provided with a ring groove for rotating the ring block, the ring block is arranged on the inner side of the lock, the ring block is matched with the ring groove, so as to realize the rotating effect between the lock lever 4 and the supporting column 11.

[0035] The reset mechanism comprises a torsion spring 13, one end of the torsion spring 13 is fixed with the lock shell 1, and the other end is connected with the inner opening rocker arm 2 and the inner opening swing arm 3, in the embodiment of the application, one end of the torsion spring 13 is fixedly connected with the outer wall of the rotating column, of course, it can also be clamped, the inner opening rocker arm 2 and the inner opening swing arm 3 are both provided with a supporting plate 14 for locking the torsion spring 13, the supporting plate 14 is provided with a triangular supporting groove 15, one end of the torsion spring 13 is clamped in the supporting groove 15, one side of the supporting plate 14 is provided in a concave shape, so as to facilitate the clamping of one end of the torsion spring 13 in the supporting groove 15, during the rotating process of the inner opening rocker arm 2 or the inner opening swing arm 3, one end of the torsion spring 13 is clamped in the supporting groove 15 of any one of the inner opening rocker arm 2 and the inner opening swing arm 3, at this time, the effect of returning the inner opening rocker arm 2 and the inner opening swing arm 3 to the initial position is realized.

[0036] The control mechanism comprises a control rod 16 and a driving assembly for driving the control rod 16, the control rod 16 is fixedly connected to the side of the lock rod 4 away from the lock slider 6, the lock shell 1 is provided with a control groove 17 for the movement of the control rod 16, the control groove 17 is provided through, and the control rod 16 is movably arranged in the control groove 17, the center of the cross section circle of the control groove 17 and the center of the cross section circle of the support column 11 are concentrically arranged, and the control rod 16 at both ends of the control groove 17 also corresponds to the unlocking or locking state of the child lock; the driving assembly comprises a driving motor 18, two mutually perpendicular first bevel gears 19, a second bevel gear 20 and a trigger part for avoiding accidental touch of children, the driving motor 18 is arranged in the lock shell 1, the first bevel gear 19 is arranged on the outer wall of the lock column 10, and the second bevel gear 20 is rotatably arranged in the lock shell 1 and controlled by the driving motor 18.

[0037] In the embodiment, due to the space problem in the lock shell 1, and the axis direction of the lock column 10 is along the thickness direction of the lock shell 1, therefore the driving motor 18 cannot be installed along the axis direction of the lock, and is arranged perpendicular to the axis direction of the lock column 10, when the driving motor 18 controls the rotation of the first bevel gear 19, at this time under the transmission of the second bevel gear 20, the lock column 10 is controlled to start rotating, the lock rod 4 drives the lock slider 6 to start moving, when the lock slider 6 moves to the gap between the inner opening rocker plate 7 and the inner opening swing plate 8, at this time the inner opening rocker arm 2 and the inner opening swing arm 3 are connected together, that is, in the unlocking state, when the inner opening rocker arm 2 is controlled to rotate, the inner opening swing arm 3 follows to rotate, and the lock can be opened; when the lock slider 6 moves away from the inner opening rocker plate 7 and the inner opening swing plate 8, the inner opening rocker arm 2 and the inner opening swing arm 3 are separated, the inner opening rocker arm 2 is controlled to move, and cannot drive the inner opening swing arm 3 to move, that is, in the locking state.

[0038] The trigger part comprises an electromagnet 21, a gear 22, a rack 23, a spring 24 and a power group for pushing the movement of the rack 23, the electromagnet 21 is used for connecting the second bevel gear 20 and the driving motor 18, the gear 22 is coaxially arranged with the second bevel gear 20, the rack 23 is meshingly connected with the gear 22, the movement direction of the rack 23 is along the axis direction of the first bevel gear 19, the spring 24 is used for connecting one end of the rack 23 and the lock shell 1, and the spring 24 is used for elastically arranging the rack 23 in the lock shell 1, in the embodiment, if the driving motor 18 is not powered, manual unlocking of the child lock is needed, at the same time, accidental touch of children is avoided, and when the driving motor 18 is powered and normally works, the electromagnet 21 is always in the powered state and is used for connecting the second bevel gear 20 and the driving motor 18, when the driving motor 18 is powered off and cannot normally work, the electromagnet 21 is also in the powered-off state, that is, the second bevel gear 20 is separated from the driving motor 18, and can be manually controlled.

[0039] One end of the rack 23 is connected with the lock shell 1 through the spring 24, and in order to ensure the stability of the movement of the rack 23, a sliding sleeve can be arranged in the lock shell 1, and the rack 23 moves in the sliding sleeve. The power group includes a power plate 25 and two power rods 26. The power plate 25 is hinged to one end of the rack 23. The two power rods 26 correspond to the two ends of the power plate 25 respectively. The hinged position of the power plate 25 and the rack 23 is at the midpoint of the power plate 25, and the swinging of the power plate 25 will not be disturbed by the rack 23. Moreover, the distance between the corresponding end of the power rod 26 and the corresponding end of the power plate 25 in the initial state is sufficient to ensure that the two power rods 26 will not interfere with each other when moving independently.

[0040] The lock shell 1 is provided with two power ports 27, and the two power rods 26 are elastically arranged in the two power ports 27 respectively. The side wall of the power rod 26 is fixedly connected with a moving block. The moving slot is arranged at the power port 27, and the moving slot is arranged along the length direction of the power port 27, and the two ends are closed. The corresponding end of the moving block is connected with the elastic element. In the embodiment, the elastic element can also be a spring 24. The sliding of the power rod 26 is adapted to the power port 27. There is no connection relationship between the two power rods 26, and the distance is not convenient for children to touch. In the embodiment, the distance between the two fingers of the child is mainly considered, so the child cannot achieve it by one hand. Of course, the elastic force of the elastic element can also reduce the probability of the child squeezing the power rod 26 as much as possible, because the elastic force of the elastic element can also reduce the probability of the child touching the power rod 26.

[0041] When in the locked state, the spring 24 is in a free deformation state. When power off, the second bevel gear rack 23 is separated from the driving motor 18. At this time, if pressure is applied to one power rod 26, because there is a distance between the power rod 26 and the power plate 25, only when the power plate 25 corresponding end swings, the rack 23 cannot be driven. Only when the two power rods 26 are squeezed at the same time, the elastic element and the spring 24 are squeezed, the lock sliding block 6 will move to the inside opening swing plate 8 and the inside opening swing plate 7 at this time. At this time, the child lock is unlocked, and the car door can be opened. The above design reduces the risk of child misoperation as much as possible when the driving motor 18 is powered off.

[0042] The implementation principle of the child lock of the vehicle door is as follows: when the driving motor 18 controls the rotation of the first bevel gear 19, the lock column 10 is controlled to start rotating under the driving action of the second bevel gear 20, the lock push rod 4 drives the lock sliding block 6 to start moving, when the lock sliding block 6 moves to the gap between the inner opening rocker plate 7 and the inner opening swing plate 8, the inner opening rocker arm 2 and the inner opening swing arm 3 are connected together at this time, that is, in the unlocked state, when the inner opening rocker arm 2 is controlled to rotate, the inner opening swing arm 3 rotates together, that is, the lock is opened; when the lock sliding block 6 is away from the inner opening rocker plate 7 and the inner opening swing plate 8, the inner opening rocker arm 2 and the inner opening swing arm 3 are separated, the inner opening rocker arm 2 is controlled to move, and the inner opening swing arm 3 cannot be driven to move, that is, in the locked state.

[0043] When in the locked state, the spring 24 is in the free deformation state, when power off, the second bevel gear 23 is separated from the driving motor 18, at this time, if a power rod 26 is pressed, because there is a distance between the power rod 26 and the power plate 25, only when continuously pressed, the power plate 25 swings at the corresponding end, at this time, the gear 23 cannot be driven, only when two power rods 26 are pressed at the same time, the elastic member and the spring 24 are pressed, at this time, the lock sliding block 6 moves to the inner opening swing plate 8 and the inner opening rocker plate 7, at this time, the child lock is unlocked, the vehicle door can be opened, the above design reduces the risk of child misoperation when the driving motor 18 is powered off.

[0044] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A child lock for a vehicle door, characterized by: The door lock comprises a lock shell (1), a switch device and an unlocking device. The switch device comprises an inner opening rocker arm (2), an inner opening swing arm (3) and an automatic reset mechanism, the inner opening swing arm (3) realizes opening / closing of the door, and the inner opening rocker arm (2) and the inner opening swing arm (3) are both rotationally arranged on the lock shell (1). The unlocking device comprises a lock shifting rod (4), a buckle mechanism for connecting the inner opening rocker arm (2) and the inner opening swing arm (3) and a control mechanism for controlling the buckle mechanism to work, and the lock shifting rod (4) is rotationally arranged on the lock shell (1). The lock shell (1) is provided with an inner opening (5) for swinging of the inner opening rocker arm (2). The control mechanism controls the buckle mechanism to move to connect the inner opening rocker arm (2) and the inner opening swing arm (3) to realize the unlocking state, and the reset mechanism realizes the inner opening rocker arm (2) and the inner opening swing arm (3) to return to the initial position. The buckle mechanism comprises a lock sliding block (6), an inner opening rocker plate (7), an inner opening swing plate (8) and a lock buckle plate (9), the inner opening rocker plate (7) is arranged on the inner opening rocker arm (2), the lock buckle plate (9) is arranged on the lock sliding block (6), the inner opening swing plate (8) is arranged on the inner opening swing arm (3), the lock sliding block (6) is arranged on the lock shifting rod (4), the inner opening rocker plate (7), the lock buckle plate (9) and the inner opening swing plate (8) are all concave, and the lock sliding block (6) is movably arranged between the gaps between the inner opening rocker plate (7) and the inner opening swing plate (8). The lock shifting rod (4) is fixedly connected with a lock column (10), the lock shell (1) is provided with a support column (11) for rotation of the lock column (10), the lock column (10) is provided with a ring block, and the support column (11) is provided with a ring groove for rotation of the ring block. The reset mechanism comprises a torsion spring (13), one end of the torsion spring (13) is fixed with the lock shell (1), and the other end is connected with the inner opening rocker arm (2) and the inner opening swing arm (3). The control mechanism comprises a control rod (16) and a driving assembly for driving the control rod (16), the control rod (16) is fixedly connected with the side of the lock rod (4) away from the lock slider (6), the lock shell (1) is provided with a control groove (17) for the movement of the control rod (16), the control groove (17) is provided through, and the control rod (16) is movably arranged in the control groove (17), the center of the cross section circle of the control groove (17) and the center of the cross section circle of the support column (11) are concentrically arranged; the driving assembly comprises a driving motor (18), two mutually perpendicular first bevel gears (19), a second bevel gear (20) and a trigger part for avoiding accidental touch by children, the driving motor (18) is arranged in the lock shell (1), the first bevel gear (19) is arranged on the outer wall of the lock column (10), the second bevel gear (20) is rotatably arranged in the lock shell (1) and controlled by the driving motor (18); the trigger part comprises an electromagnet (21), a gear (22), a rack (23), a spring (24) and a power group for pushing the movement of the rack (23), the electromagnet (21) is used for connecting the second bevel gear (20) and the driving motor (18), the gear (22) is coaxially arranged with the second bevel gear (20), the rack (23) is meshingly connected with the gear (22), the movement direction of the rack (23) is along the axis direction of the first bevel gear (19), the spring (24) is used for connecting one end of the rack (23) and the lock shell (1), and the spring (24) is used for elastically arranging the rack (23) in the lock shell (1).

2. A child lock for a vehicle door according to claim 1, characterized in that: The lock slider (6) is arranged in an arc shape, and the lock rod (4) is provided with a fixing groove (12), and the lock slider (6) is arranged in the fixing groove (12).

3. A child lock for a vehicle door according to claim 2, wherein: The inner opening rocker arm (2) and the inner opening swing arm (3) are both provided with a supporting plate (14) for locking the torsional spring (13), the supporting plate (14) is provided with a triangular supporting groove (15), and one end of the torsional spring (13) is clamped in the supporting groove (15).

4. A child lock for a vehicle door according to claim 3, wherein: The power group comprises a power plate (25) and two power rods (26), the power plate (25) is hingedly connected to one end of the rack (23), the lock shell (1) is provided with a power port (27), and two power rods (26) are elastically arranged in the two power ports (27) respectively, the two power rods (26) correspond to the two ends of the power plate (25) respectively, and the hinged position of the power plate (25) and the rack (23) is at the midpoint of the power plate (25).

Images