A car door child lock

Abstract

The invention discloses a child lock for automobile doors, comprising a housing, a switch component, an unlocking component, a mechanical safety component and a safety release component, wherein the switch 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 safety component comprises a mechanical swing arm, and the safety release component comprises a motor and a cam, and the linkage frame cooperates with the cam. The child lock is placed in a locked state or an unlocked state by adjusting the mechanical swing arm. If the child lock is in a locked state, the safety release component can be started, the motor drives the cam to rotate, and the linkage block of the linkage frame is driven to move in the slide groove. At this time, the unlocking pull rope is pulled, and the inner opening swing arm swings down to press the linkage block, and the linkage block drives the swing frame to swing, so that the first shifting 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 unlocked state. It not only plays the protective role of the child lock, but also can temporarily release the child lock when needed, and is safe and convenient to use.

Description

Technical Field

[0001] The invention relates to an improved invention of a car door lock, in particular to a car door child lock. Background Art

[0002] In order to eliminate the safety hazard of children opening the car door while driving, a car child lock is configured on the rear door lock of the vehicle. The child lock locks the rear door. Before the child lock is unlocked, the user cannot open the door from inside the car. The door can only be opened normally after the child lock is released.

[0003] At present, child locks use mechanical locks, which have only two states: one is open and the other is closed. In the closed state, the door cannot be opened, and in the open state, the door can be opened manually. The opening and closing of the mechanical lock require manual adjustment, which is very inconvenient to operate. Users choose to use one of the states for a long time. Some users choose to give up the child lock, and some users choose to give up opening the rear door in the car. Therefore, for users, the existing car door child locks are not practical. Summary of the invention

[0004] In view of the technical problems existing in the background technology, the technical problem solved by the present invention is to provide a child lock for a car door which is easy to operate and highly practical.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: the car door child lock is characterized by: comprising

[0006] case;

[0007] A switch component comprising

[0008] The large lock tongue is rotatably mounted on the housing, and the large lock tongue is connected to a return torsion spring 1. The large lock tongue is provided with a lock groove, and the clockwise direction of the lock groove is a stop end.

[0009] and a small lock tongue, which is rotatably mounted on the housing, and the small lock tongue is connected to a return torsion spring 2, the small lock tongue is provided with a lock tongue, the lock tongue forms a step on the small lock tongue, and the lock tongue is engaged with the stop end of the lock groove;

[0010] Unlocking components, including

[0011] The swing frame is swingably mounted on the housing, the housing is provided with a first limit block, the swing frame is connected with a return torsion spring 3, the swing frame is provided with a first shifting block that cooperates with the small lock tongue, and the swing frame is provided with a slide groove.

[0012] The linkage frame is provided with a linkage block, the linkage block is slidably arranged in the slide slot, and the linkage frame is connected with a return torsion spring 4.

[0013] and an inner opening swing arm, which is swingably mounted on the housing, the housing is provided with a second limit block, the inner opening swing arm is connected to a return torsion spring 5, one end of the inner opening swing arm is connected to the unlocking pull rope, and the other end cooperates with the linkage block in the slide slot;

[0014] A mechanical safety component, comprising a mechanical swing arm, the mechanical swing arm is swingably mounted on the housing and swings between an unlocking position and a locking position, and in the unlocking position, the mechanical swing arm is pressed with the linkage frame;

[0015] And a release safety component, which includes a motor and a cam, the motor is connected to the cam, and the linkage frame is matched with the cam.

[0016] The present invention adjusts the mechanical swing arm to make the child lock in a locked state or unlocked state. If the child lock is in a locked state, when the user needs to open the door when getting on or off the car, the release safety component can be activated, and the cam is driven by the motor to rotate. The cam drives the linkage block of the linkage frame to move in the slide groove. At this time, the unlocking pull rope is pulled, and the inner opening swing arm swings down to press the linkage block. The linkage block drives the swing frame to swing downward, so that the first block on the swing frame pushes the small lock tongue, and the small lock tongue is separated from the large lock tongue. The elastic force of the return torsion spring makes the large lock tongue rotate to the unlocked state. In this way, the child lock can be protected and the child lock can be temporarily released when needed, which is safe and convenient to use.

[0017] Preferably, the linkage frame is provided with a linkage slot, the mechanical swing arm is provided with a second shifting block, and the second shifting block extends into the linkage slot. The mechanical swing arm drives the linkage frame to move through the second shifting block, so that the linkage block moves in the slide slot.

[0018] Preferably, one end of the mechanical swing arm is a limit end, and the other end is a driving end; a mounting plate is provided in the housing, and a spring sheet is provided on the mounting plate, and the spring sheet is provided with an unlocking slot and a locking slot for the limit end of the mechanical swing arm to enter. The spring sheet keeps the mechanical swing arm in two states. When the limit end of the mechanical swing arm enters the unlocking slot, the mechanical swing arm presses against the linkage frame, so that the linkage block of the linkage frame moves toward the inner opening swing arm, so that the inner opening swing arm can drive the linkage block when it swings, and then unlocking is realized. When the limit end of the mechanical swing arm enters the locking slot, the linkage frame is not squeezed by the mechanical swing arm, and driven by the return torsion spring 4, the linkage block moves away from the inner opening swing arm in the slide slot, and the inner opening swing arm cannot drive the linkage block when it swings, and thus cannot unlock. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 Schematic diagram of the housing of the present invention Figure 1 .

[0021] Figure 3 Schematic diagram of the housing of the present invention Figure 2 .

[0022] Figure 4 Schematic diagram of the housing of the present invention Figure 3 .

[0023] Figure 5 Schematic diagram of the housing of the present invention Figure 4 .

[0024] Figure 6 It is a schematic diagram of the shrapnel of the present invention. DETAILED DESCRIPTION

[0025] The following describes the details and working principle of the embodiments and examples of the present invention in conjunction with the accompanying drawings. This type of car door child lock includes a housing 1, a switch component, an unlocking component, a mechanical safety component and a safety release component; the switch component includes a large lock tongue 3 and a small lock tongue 2, the large lock tongue is rotatably mounted on the housing, and the large lock tongue 3 is connected to a return torsion spring 1, the elastic force of the return torsion spring 1 causes the large lock tongue to turn counterclockwise to an unlocked state, the large lock tongue is provided with a lock groove 13, the clockwise direction of the lock groove is a stop end 11; the small lock tongue 2 is rotatably mounted on the housing, and the small lock tongue is connected to a return torsion spring 2, the elastic force of the return torsion spring 2 causes the small lock tongue to press against the large lock tongue 3, the small lock tongue is provided with a lock tongue 12, the lock tongue forms a step on the small lock tongue, the lock tongue 12 is engaged with the stop end 11 of the lock groove, Figure 2In the embodiment, the large lock tongue 3 is in a locked state, the lock tongue 12 of the small lock tongue enters the lock groove 13, and the elastic force of the return torsion spring 1 causes the large lock tongue to press against the lock tongue 12 of the small lock tongue, and the lock tongue catches the stop end 11 of the lock groove, locking the large lock tongue in a fully locked state. When unlocking, the small lock tongue 2 swings, so that the lock tongue 12 is separated from the large lock tongue 3, and the large lock tongue is not restricted by the small lock tongue and rotates counterclockwise under the drive of the return torsion spring 1, thereby unlocking. The unlocking component includes a swing frame 7, a linkage frame 6 and an inner swing arm 8, the swing frame is swingably installed on the shell, a first limit block 22 is provided on the shell, the swing frame 7 is connected with a return torsion spring three, and a first shift block 10 that cooperates with the small lock tongue 2 is installed on the swing frame, the elastic force of the return torsion spring three makes the swing frame 7 swing toward the first limit block 22 and makes the first shift block away from the small lock tongue, the first limit block controls the swing angle of the swing frame, and a slide groove 19 is provided on the swing frame 7; the linkage frame 6 is provided with a linkage block 20, the linkage block is slidably arranged in the slide groove 19, the linkage frame 6 is connected with a return torsion spring four, and the elastic force of the return torsion spring four makes the linkage frame move toward the opening of the slide groove 19, so that the swing of the inner swing arm 8 cannot act on the linkage block 20, and at this time the linkage block is in a failed state. The inner opening swing arm 8 is in a linkage state, and the linkage block moves to the depth of the slide groove 19, and the inner opening swing arm 8 can act on the linkage block 20, so that the linkage block is in a linkage state; the inner opening swing arm is swingably installed on the shell, and a second limit block 23 is provided on the shell, and the inner opening swing arm is connected with a return torsion spring five, and the elastic force of the return torsion spring five makes the inner opening swing arm 8 swing toward the second limit block 23 and makes the inner opening swing arm away from the linkage block 20, one end of the inner opening swing arm is connected to the unlocking pull rope, and the other end cooperates with the linkage block 20 in the slide groove. When unlocking, the user manually pulls the unlocking pull rope, and the inner opening swing arm 8 overcomes the elastic force of the return torsion spring five. If the linkage block 20 is in a linkage state at this time, the inner opening swing arm 8 presses against the linkage block, driving the swing frame 7 to swing, and the first shifting block 10 on the swinging frame shifts the small lock tongue 2 to make it disengage from the large lock tongue 3, and then unlocking is achieved. The mechanical safety component includes a mechanical swing arm 5, which is swingably mounted on the housing and swings between the unlocking position and the locking position. In the unlocking position, the mechanical swing arm is pressed against the linkage frame 6, that is, the mechanical swing arm overcomes the elastic force of the return torsion spring 4, so that the linkage block is in a linkage state. In the locking position, the mechanical swing arm 5 is separated from the linkage frame 6, and the elastic force of the return torsion spring 4 makes the linkage block in an invalid state. The linkage frame is provided with a linkage slot 15, and the mechanical swing arm is provided with a second shifting block 16, which extends into the linkage slot 15. Figure 3, the mechanical swing arm swings clockwise, and the second shift block 16 shifts the linkage frame 6 to move it. Conversely, the mechanical swing arm swings counterclockwise, and the second shift block is vacant in the linkage slot 15 and will not act on the linkage frame; one end of the mechanical swing arm 5 is a limit end 24, and the other end is a driving end; a mounting plate 18 is provided in the shell, and a spring piece 17 is provided on the mounting plate. The spring piece is provided with an unlocking slot 25 and a locking slot 26 for the limit end 24 of the mechanical swing arm to enter. The unlocking slot and the locking slot of the spring piece are used to limit the position of the mechanical swing arm 5, so that the mechanical swing arm is kept in two states. When the mechanical swing arm When the limit end 24 enters the unlocking groove 25, the mechanical swing arm presses against the linkage frame 6, causing the linkage block 20 of the linkage frame to move toward the inner opening swing arm, so that the inner opening swing arm can drive the linkage block when it swings, and then unlocking is achieved; when the limit end 24 of the mechanical swing arm enters the locking groove 26, the linkage frame is not squeezed by the mechanical swing arm, and under the drive of the return torsion spring four, the linkage block is moved away from the inner opening swing arm in the slide groove 19, and the linkage block 20 cannot be driven when the inner opening swing arm swings, and thus cannot be unlocked; the arc connection between the unlocking groove and the locking groove is beneficial to the switching of the limit end of the mechanical swing arm between the two grooves. The safety release component includes a motor 14 and a cam 9. The motor is connected to the cam, and the linkage frame 6 cooperates with the cam 9. The motor drives the cam to rotate, and the protrusion of the cam pushes the linkage frame 6 to move, so that the linkage block 20 moves to a linkage state in the slide groove. At this time, the car door can be opened. If the motor rotates in the opposite direction, the elastic force of the return torsion spring four causes the linkage frame 6 to move in the opposite direction, and the linkage block 20 moves to a failure state in the slide groove. At this time, the car door is locked and cannot be opened.

[0026] See the attached drawings. The large lock tongue 3 and the small lock tongue 2 are arranged vertically relative to the swing frame 7, the linkage frame 6, the inner opening swing arm 8 and the mechanical swing arm 5. The swing frame, the linkage frame, the inner opening swing arm and the mechanical swing arm are arranged in parallel and are linked to each other. When using the child lock, the user manually swings the mechanical swing arm 5 so that the limit end of the mechanical swing arm swings to the lock slot 26. The second shift block 16 of the mechanical swing arm is vacant in the linkage slot 15 of the linkage frame. At this time, the elastic force of the return spring 4 moves the linkage frame 6, and the linkage block 20 moves to the failure state in the slide slot. At this time, the user opens the car door, that is, pulls the unlocking pull rope, and the inner opening swing arm 8 swings downward, but does not touch the linkage block 20, so the swing frame does not swing, and the lock tongue 12 of the small lock tongue is stuck in the stop end 11 of the lock slot, and the large lock tongue 3 is still In the locked state, the door cannot be opened; when the door needs to be opened when getting on or off the vehicle, the motor 14 can be started, the motor drives the cam 9 to rotate, the cam's protrusion pushes the linkage frame 6 to move, so that the linkage block 20 moves to the linkage state in the slide slot, and then the unlocking pull rope is pulled, the inner opening swing arm 8 swings and presses the linkage block 20, and the linkage block drives the swing frame 7 to swing downward, so that the first block 10 on the swing frame pushes the small lock tongue 2 to swing, the small lock tongue is separated from the large lock tongue, and the elastic force of the return torsion spring 1 makes the large lock tongue 3 rotate counterclockwise to the unlocked state. In this way, the child lock not only plays a protective role, but also can temporarily release the child lock when needed, which is safe and convenient to use; the time for the motor 14 to reverse and reset can also be set, such as 5 seconds, and the user needs to open the door within 5 seconds, otherwise the motor reverses, the cam 9 resets, and the elastic force of the return spring 4 will push the linkage frame 6 to move in the opposite direction, so that the linkage block 20 moves to the invalid state, and the door is restored to the locked state, thus improving the safety performance.

Claims

1. A car door child lock, characterized in that: It includes a housing, a switch component, an unlocking component, a mechanical safety component and a safety release component; The switch component includes a large lock tongue and a small lock tongue. The large lock tongue is rotatably mounted on the housing, and the large lock tongue is connected to a return torsion spring 1. The large lock tongue is provided with a lock groove, and the clockwise direction of the lock groove is a stop end. A small lock tongue is rotatably mounted on the housing, and the small lock tongue is connected to a return torsion spring 2, the small lock tongue is provided with a lock tongue, the lock tongue forms a step on the small lock tongue, and the lock tongue is engaged with the stop end of the lock groove; The unlocking component includes a swing frame, a linkage frame and an inner swing arm. The swing frame is swingably mounted on the housing, the housing is provided with a first limit block, the swing frame is connected with a return torsion spring 3, the swing frame is provided with a first shifting block that cooperates with the small lock tongue, and the swing frame is provided with a slide groove. The linkage frame is provided with a linkage block, the linkage block is slidably arranged in the slide slot, the linkage frame is connected with a return torsion spring four, and the elastic force of the return torsion spring four causes the linkage frame to move toward the opening of the slide slot, The inner opening swing arm is swingably mounted on the housing, a second limit block is arranged on the housing, the inner opening swing arm is connected with a return torsion spring 5, one end of the inner opening swing arm is connected with the unlocking pull rope, and the other end cooperates with the linkage block in the slide slot, the linkage block moves deep into the slide slot, the inner opening swing arm can act on the linkage block, the linkage block is in a linkage state, the linkage block moves toward the slide slot opening, the inner opening swing arm swings and cannot act on the linkage block, and the linkage block is in a failure state at this time; A mechanical safety component, comprising a mechanical swing arm, the mechanical swing arm is swingably mounted on the housing and swings between an unlocking position and a locking position, and in the unlocking position, the mechanical swing arm is pressed with the linkage frame; The release safety component includes a motor and a cam, wherein the motor is connected to the cam, and the linkage frame cooperates with the cam. The motor drives the cam to push the linkage frame to move, so that the linkage block moves in the slide groove to a linkage state.

2. The car door child lock according to claim 1, characterized in that: The linkage frame is provided with a linkage groove, and the mechanical swing arm is provided with a second shift block, and the second shift block extends into the linkage groove.

3. The car door child lock according to claim 1, characterized in that: One end of the mechanical swing arm is a limiting end, and the other end is a driving end; a mounting plate is arranged in the shell, and a spring sheet is arranged on the mounting plate, and the spring sheet is provided with an unlocking groove and a locking groove for the limiting end of the mechanical swing arm to enter.

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