Child lock structure of automobile door lock

Abstract

The application relates to a child lock structure of an automobile door lock and belongs to the field of automobile door locks. The child lock structure comprises a first shell, an inner opening arm, a transmission arm and a driving arm used for controlling unlocking of the automobile door lock. The inner opening arm, the transmission arm and the driving arm are rotationally connected to the first shell. The rotation axes of the inner opening arm and the transmission arm are in the same straight line. The rotation axis of the driving arm is perpendicular to the rotation axes of the inner opening arm and the transmission arm. A first waist-shaped hole is formed in the transmission arm. A transmission pin is slidably connected in the first waist-shaped hole. A second shell is connected to the first shell. An adjusting assembly used for adjusting the position of the transmission pin is arranged on the second shell. After the adjusting assembly adjusts the position of the transmission pin, the inner opening arm is arranged in dislocation with the transmission pin. The application has the functions of simplifying the child lock structure in the automobile door lock and improving the stability when the child lock is locked.

Description

Technical Field

[0001] This application relates to the field of automotive door locks, and more particularly to a child lock structure for automotive door locks. Background Technology

[0002] Car door locks are automotive components used to unlock and unlock car doors. Child locks are becoming increasingly common in car door locks; their main function is to prevent children inside the car from accidentally touching the door handle and unlocking the door.

[0003] In related technologies, car door locks are mainly divided into two unlocking methods: inward opening and outward opening. A car door lock mainly consists of an outward opening arm, an inward opening arm, and a drive arm for controlling the movement of the lock tongue. The outward opening arm cooperates with the first handle on the outside of the door and abuts against the drive arm via a first connecting component. The inward opening arm cooperates with the second handle on the inside of the door, and the outward opening arm directly abuts against the drive arm. To improve the security of car door locks, a child lock mechanism is included. The child lock mechanism mainly includes a first separating member and a second separating member.

[0004] When a child lock is engaged, the first separating component needs to be used to adjust the position of the inner opening arm, and then the second separating component needs to be used to adjust the position of the drive arm, so that the inner opening arm and the drive arm are completely separated, thus enabling the child lock to function. However, using different components to adjust the positions of the inner opening arm and the drive arm separately requires using different drive elements to control the first and second separating components, increasing the complexity of the internal structure of the car door lock and the cumbersome process of activating the child lock. This reduces the practicality of the child lock structure in car door locks and therefore needs improvement. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a child lock structure for a car door lock.

[0006] This application provides a child lock structure for a car door lock, which adopts the following technical solution: A child lock structure for a car door lock includes a first housing, an inner opening arm, a transmission arm, and a drive arm for controlling the unlocking of the car door lock. The inner opening arm, the transmission arm, and the drive arm are all rotatably connected to the first housing. The rotation axes of the inner opening arm and the transmission arm are on the same straight line. The rotation axis of the drive arm is perpendicular to the rotation axes of the inner opening arm and the transmission arm. The transmission arm has a first oblong hole, and a transmission pin is slidably connected in the first oblong hole. A second housing is connected to the first housing. The second housing is provided with an adjustment component for adjusting the position of the transmission pin. When the adjustment component adjusts the position of the transmission pin, the inner open arm is misaligned with the transmission pin.

[0007] By adopting the above technical solution, when the car door needs to be unlocked, the operator controls the inner opening arm to rotate towards the drive pin. The inner opening arm contacts the drive pin and controls its rotation. The drive pin then drives the drive arm to rotate, and the drive arm contacts the drive arm, allowing the drive arm to control the lock latch to open, thus realizing the function of unlocking the car door. When it is necessary to prevent children from accidentally opening the car door from inside the vehicle, the adjusting component is activated and controls the drive pin to slide along the first oblong hole. After the drive pin and the inner opening arm are misaligned, the child lock is unlocked. During the subsequent rotation of the inner opening arm, the misalignment with the drive pin reduces the possibility of children accidentally opening the car door from inside the vehicle. At the same time, the control component and the drive pin simplify the internal structure of the door lock used to control the child lock, thus providing convenience for unlocking the child lock.

[0008] Preferably, the adjustment assembly includes an adjustment arm and two opposing adjustment bars. The adjustment arm is slidably connected to the side of the second housing near the first housing. The two opposing adjustment bars are disposed on the side of the adjustment arm near the transmission arm. An adjustment gap is formed between the two opposing adjustment bars. The transmission pin extends into the adjustment gap and moves along the adjustment gap.

[0009] By adopting the above technical solution, when the child lock needs to be opened, the adjusting arm moves away from the transmission arm, and the adjusting arm then drives the two adjusting bars to move away from the transmission arm. At this time, the adjustment gap between the two adjusting bars can guide the transmission pin, so that the transmission pin slides along the first oblong hole, thus realizing the function of opening the child lock. At the same time, under the action of the adjustment gap, the stability of the adjusting arm and the two adjusting bars in adjusting the position of the transmission pin is improved.

[0010] Preferably, both of the adjusting bars that are positioned opposite each other are curved.

[0011] By adopting the above technical solution, the curved adjustment bar keeps the adjustment gap in a curved state, reducing the possibility of the transmission pin getting stuck when moving in the adjustment gap, which further improves the stability of the adjustment arm and the two adjustment bars when adjusting the position of the transmission pin.

[0012] Preferably, the second housing is provided with a guide post, the adjusting arm is provided with a second oblong hole, and the guide post is disposed in the second oblong hole.

[0013] By adopting the above technical solution, during the process of unlocking the child lock, the operator controls the adjusting arm to slide away from the transmission arm. At this time, under the guidance of the guide post and the second oblong hole, the stability of the adjusting arm when moving is improved, that is, the stability of the adjusting arm and the two adjusting bars when controlling the transmission pin to move is improved.

[0014] Preferably, the first housing is provided with a drive assembly, which includes a motor, a worm gear, and a sector gear. The motor is mounted on the first housing, the worm gear is coaxially mounted on the output end of the motor, and the sector gear is rotatably connected to the first housing. The rotation axis of the sector gear is parallel to the rotation axis of the inner open arm and the transmission arm. The worm gear meshes with the sector gear. A connecting post is provided on the side of the sector gear near the second housing. A connecting hole is provided on the adjusting arm, and the connecting post is disposed in the connecting hole.

[0015] By adopting the above technical solution, when the child lock is needed, the motor starts and drives the worm gear to rotate, which in turn drives the sector gear to rotate, which in turn drives the connecting post to rotate. Under the limiting action of the connecting hole and the guiding action of the guide post and the second oblong hole, the sector gear pulls the adjusting arm during its rotation. The adjusting arm then controls the movement of the two adjusting bars to control the movement of the transmission pin along the first oblong hole, causing the transmission pin to misalign with the inner opening arm, thus opening the child lock. When the child lock needs to be closed, the motor reverses and controls the sector gear to reset, causing the adjusting arm and the two adjusting bars to reset the transmission pin, thus closing the child lock. Through the action of the motor, worm gear, and sector gear, the automatic opening and closing function of the child lock is achieved, thereby further improving the convenience and stability of the operator in controlling the opening and closing of the child lock.

[0016] Preferably, the inner opening arm includes a control plate and a trigger plate. The control plate is rotatably connected to the first housing. The rotation axis of the control plate is on the same straight line as the rotation axis of the transmission arm. The trigger plate is disposed on the side of the control plate close to the first housing. The control plate and the trigger plate are connected by a connecting plate. A clearance space is formed between the control plate and the trigger plate for the transmission pin to make way after the position is adjusted.

[0017] By adopting the above technical solution, when the car door needs to be opened, the operator rotates the trigger plate, which drives the control plate to rotate. The control plate then contacts the transmission pin, causing the transmission arm to rotate. The transmission arm then contacts the drive arm and drives it to rotate, thus controlling the opening of the car lock. When the child lock is activated, the adjusting arm controls the transmission pin to move along the first oblong hole. At this time, when a child inside the car rotates the trigger plate, the transmission pin is misaligned with the control plate, thus realizing the function of the child lock. Simultaneously, the clearance space formed between the control plate and the trigger plate allows the inner opening arm to further reposition the transmission pin, thereby improving the stability of the child lock during use.

[0018] Preferably, the control board has a control surface for controlling the transmission pin.

[0019] By adopting the above technical solution, the control surface increases the contact area between the control board and the transmission pin, thereby improving the stability of the control board when controlling the rotation of the transmission pin and the transmission arm. On the other hand, it improves the compatibility between the control board and the transmission pin, making the contact point between the control board and the transmission pin less prone to damage.

[0020] Preferably, the inner open arm is provided with a reset member for manually resetting the transmission pin, the reset member abutting against the transmission arm, and a blocking component for blocking the transmission pin is provided between the two opposing adjustment bars.

[0021] By adopting the above technical solution, when the motor is damaged, the operator controls the inner opening arm to rotate in the opposite direction to the unlocking direction, and the reset component controls the transmission arm to rotate in the opposite direction. Under the limiting action of the inner wall of the first oblong hole, the transmission pin can continue to move along the adjustment gap, so that the transmission pin contacts the blocking component. The blocking component limits the transmission pin, at which point the transmission pin can control the adjustment arm to reset. After the adjustment arm resets, the child lock can be manually unlocked.

[0022] Preferably, the reset component includes a reset plate, which is disposed on the side of the inner open arm near the transmission arm and abuts against the transmission arm. The blocking assembly includes a blocking plate and two oppositely disposed mounting blocks, which are respectively disposed on both sides of the blocking plate. Each of the two oppositely disposed adjusting strips has a mounting groove, and each mounting block corresponds to a mounting groove. The mounting block is disposed in the corresponding mounting groove, and the blocking plate is disposed between the two opposite adjusting strips.

[0023] By adopting the above technical solution, when the child lock needs to be manually unlocked, the operator controls the inner opening arm to rotate in the opposite direction to the unlocking direction. The inner opening arm controls the reset plate to rotate in the opposite direction. The reset plate contacts the transmission arm and drives the transmission arm to rotate in the opposite direction. Under the limiting action of the inner wall of the first oblong hole, the transmission pin controls the transmission arm to rotate in the opposite direction. When the transmission pin rotates to contact the blocking plate, under the guidance of the guide post and the second oblong hole, the transmission pin can drive the blocking plate and the adjusting arm to reset. After the adjusting arm resets, the manual unlocking of the child lock is completed.

[0024] Preferably, the adjusting arm is provided with a pre-blocking assembly on the side near the transmission arm. The pre-blocking assembly includes a support plate, a pre-blocking post, and a spring. The support plate is disposed on the side of the adjusting arm near the transmission arm and has a clearance hole. The pre-blocking post is slidably connected in the clearance hole. One end of the spring is connected to the pre-blocking post, and the other end is connected to the side of the support plate near the adjusting bar. One of the adjusting bars has a pre-blocking hole. The pre-blocking post extends into the adjusting gap after passing through the pre-blocking hole. The end of the pre-blocking post located in the adjusting gap is disposed on the side of the blocking plate near the transmission pin.

[0025] By adopting the above technical solution, when the transmission pin contacts the pre-blocking post, the pre-blocking post is compressed and moves towards the support plate, and the spring is in a compressed state. At this time, under the action of the spring's rebound force, the resistance when the transmission pin moves is increased, reducing the chance of children accidentally unlocking the child lock manually.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a drive component, a control component, and a transmission pin, the drive component drives the control component to start, and the control component then controls the transmission pin to move to a position that is misaligned with the inner opening arm, thereby realizing the function of automatically opening the child lock. At the same time, it simplifies the internal structure of the car lock to realize the child lock function. 2. The curved adjustment bar makes it less likely for the transmission pin to move within the adjustment gap, thus improving the stability of the adjustment arm and adjustment bar when controlling the movement of the transmission pin; 3. By setting a reset component and a blocking component, the operator can use the reset component and blocking component to control the adjustment arm to reset by rotating the inner opening arm in the opposite direction. After the adjustment arm is reset, the operator can control the inner opening arm to reset to complete the manual unlocking of the child lock, so that the operator can unlock the child lock after the motor is damaged. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application; Figure 2 This is a structural schematic diagram of Embodiment 1 of this application, illustrating the positional relationship between the inner open arm, the transmission arm, and the drive arm; Figure 3 This is a structural schematic diagram of Embodiment 1 of this application, illustrating the positional relationship between the driving component and the adjusting component; Figure 4 This is a structural schematic diagram of Embodiment 2 of this application, illustrating the positional relationship between the driving component and the adjusting component; Figure 5 yes Figure 4 A magnified structural diagram of part A in the middle.

[0028] Explanation of reference numerals in the attached drawings: 1. First housing; 2. Inner opening arm; 21. Control plate; 211. Control surface; 212. Clearance space; 22. Trigger plate; 23. Connecting plate; 24. Reset plate; 3. Transmission arm; 31. First oblong hole; 32. Transmission pin; 4. Drive arm; 5. Second housing; 51. Guide post; 6. Adjustment assembly; 61. Adjustment arm; 611. Second oblong hole; 612. Connecting hole; 62. Adjustment bar; 621. Mounting groove; 622. Pre-blocking hole; 63. Adjustment gap; 7. Drive assembly; 71. Motor; 72. Worm gear; 73. Sector gear; 731. Connecting post; 8. Blocking assembly; 81. Blocking plate; 82. Mounting block; 9. Pre-blocking assembly; 91. Support plate; 911. Clearance hole; 92. Pre-blocking post; 93. Spring. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0030] Example 1: Embodiment 1 of this application discloses a child lock structure for a car door lock. (Refer to...) Figure 1 and Figure 2 A child lock structure for a car door lock includes a first housing 1, an inner opening arm 2, a transmission arm 3, and a drive arm 4 for controlling the unlocking of the car door lock. The inner opening arm 2, transmission arm 3, and drive arm 4 are all rotatably connected to the first housing 1. The rotation axes of the inner opening arm 2 and the transmission arm 3 are on the same straight line, and the rotation axis of the drive arm 4 is perpendicular to the rotation axes of the inner opening arm 2 and the transmission arm 3. The transmission arm 3 has a first oblong hole 31, and a transmission pin 32 is slidably connected in the first oblong hole 31. A second housing 5 is connected to the first housing 1. The second housing 5 is provided with an adjustment component 6 for adjusting the position of the transmission pin 32. When the adjustment component 6 adjusts the position of the transmission pin 32, the inner opening arm 2 and the transmission pin 32 are in a misaligned state.

[0031] When the child lock function needs to be implemented inside the car lock, the operator activates the adjustment component 6. The adjustment component 6 controls the transmission pin 32 to move along the first waist-shaped hole 31. When the transmission pin 32 moves to the point where it is misaligned with the inner opening arm 2, the child lock can be opened, which simplifies the structure for implementing the child lock function inside the car lock.

[0032] Reference Figure 2 and Figure 3The adjusting assembly 6 includes an adjusting arm 61 and two opposing adjusting bars 62. The adjusting arm 61 is slidably connected to the side of the first housing 1 near the second housing 5, and the two opposing adjusting bars 62 are fixed to the side of the adjusting arm 61 near the transmission arm 3. An adjusting gap 63 is formed between the two opposing adjusting bars 62. The transmission pin 32 extends into the adjusting gap 63 and slides along the adjusting gap 63, and the opposing sides of the two adjusting bars 62 abut against the transmission pin 32.

[0033] To improve the stability of the adjusting arm 61 when it moves, a guide post 51 is fixed on the second housing 5, and a second waist-shaped hole 611 is opened on the adjusting arm 61, with the guide post 51 set in the second waist-shaped hole 611.

[0034] When the child lock is needed, the operator controls the sliding of the adjusting arm 61. At this time, the guide post 51 cooperates with the second oblong hole 611 to guide the movement of the adjusting arm 61, thereby improving the stability of the adjusting arm 61 during movement. That is, the adjusting arm 61 moves under the guidance of the guide post 51. During the movement of the adjusting arm 61, it drives the two adjusting strips 62 to move. At this time, under the guidance of the adjusting gap 63, the two adjusting strips 62 can drive the transmission pin 32 to move along the first oblong hole 31. When the transmission pin 32 moves to the point of being misaligned with the inner opening arm 2, the child lock is opened, thus providing convenience for the operator to open the child lock.

[0035] Reference Figure 3 In order to improve the stability of the adjustment gap 63 in guiding the transmission pin 32, both adjustment bars 62 are bent so that the adjustment bars 62 are less likely to obstruct the transmission pin 32 during the movement of the transmission pin 32, so that the two adjustment bars 62 can control the transmission pin 32 more stably.

[0036] Reference Figure 1 and Figure 3 The inner opening arm 2 includes a control plate 21 and a trigger plate 22. The control plate 21 is rotatably connected to the first housing 1, and the axis of rotation of the control plate 21 is collinear with the axis of rotation of the transmission arm 3. The trigger plate 22 is located on the side of the control plate 21 closest to the first housing 1. The trigger plate 22 and the control plate 21 are connected by a connecting plate 23. The control plate 21 has a control surface 211 for controlling the transmission pin 32. A clearance space 212 is formed between the control plate 21 and the trigger plate 22 to allow the transmission pin 32 to move after position adjustment. When the child lock is in the open state, the transmission pin 32 is misaligned with the inner opening arm 2. When a child accidentally touches the inner opening arm 2 inside the car, the existence of the clearance space 212 causes the inner opening arm 2 to further clearance the transmission pin 32, thereby improving the stability of the child lock during use.

[0037] The first housing 1 is provided with a drive assembly 7 for controlling the adjusting arm 61. The drive assembly 7 includes a motor 71, a worm gear 72, and a sector gear 73. The motor 71 is fixed to the first housing 1, and the axis of rotation of the output shaft of the motor 71 is perpendicular to the projection of the rotation axes of the transmission arm 3 and the inner open arm 2. The worm gear 72 is coaxially fixed to the output end of the motor 71. The sector gear 73 is rotatably connected to the first housing 1, and the axis of rotation of the sector gear 73 is parallel to the axis of rotation of the inner open arm 2 and the transmission arm 3. The sector gear 73 meshes with the worm gear 72. A connecting post 731 is fixed to the side of the sector gear 73 away from the first housing 1. A connecting hole 612 is opened on the side of the adjusting arm 61 near the sector gear 73, and the connecting post 731 is disposed in the connecting hole 612.

[0038] When the car door needs to be unlocked, the operator controls the trigger plate 22 to rotate toward the transmission pin 32. The trigger plate 22 drives the control plate 21 to rotate, and the control surface 211 on the control plate 21 contacts the transmission pin 32, applying force to the transmission pin 32. The transmission pin 32 transmits the force through the inner wall of the first oblong hole 31 to the transmission arm 3, causing the transmission arm 3 to rotate. The transmission arm 3 then drives the drive arm 4 to rotate, so that the drive arm 4 controls the lock latch to open, realizing the function of unlocking the car door.

[0039] When the child lock needs to be unlocked, motor 71 starts and drives worm gear 72 to rotate. Worm gear 72 then drives sector gear 73 to rotate. Under the connection of connecting post 731 and connecting hole 612, connecting post 731 can drive adjusting arm 61 to move. Adjusting arm 61 then drives two adjusting bars 62 to move. The two adjusting bars 62 then drive transmission pin 32 to move, causing transmission pin 32 to be misaligned with control plate 21. When a child inside the car accidentally touches the inward opening arm 2, that is, during the process of the inward opening arm 2 moving towards transmission pin 32, control plate 21 is less likely to come into contact with transmission pin 32, reducing the possibility of a child accidentally opening the door. When the child lock needs to be deactivated, motor 71 reverses and controls worm gear 72 to reverse. Worm gear 72 then drives sector gear 73 to reset. Sector gear 73 then drives adjusting arm 61 and two adjusting bars 62 to reset. Adjusting bars 62 can then control transmission pin 32 to reset, so that transmission pin 32 and control surface 211 on control plate 21 are aligned, so that the operator can use inward opening arm 2 to open the door later.

[0040] The implementation principle of Embodiment 1 of this application is as follows: When the child lock needs to be opened, the drive assembly 7 is activated and controls the adjusting arm 61 to slide away from the transmission arm 3. The adjusting arm 61 controls the two adjusting bars 62 to move, and the two adjusting bars 62 then control the transmission pin 32 to slide along the first oblong hole 31. When the transmission pin 32 and the inner opening arm 2 are in a misaligned state, the child lock is opened. At this time, under the action of the drive assembly 7, the adjusting arm 61 and the two adjusting bars 62, on the one hand, the structure of the car lock to realize the child lock function is simplified, and on the other hand, the two adjusting gaps 63 and the first oblong hole 31 on the transmission arm 3 improve the stability of the child lock when it is opened.

[0041] Example 2: Reference Figure 4 and Figure 5 The difference from Embodiment 1 of this application is that: the inner open arm 2 is provided with a reset member for manually resetting the transmission pin 32, and the reset member abuts against the transmission arm 3. A blocking component 8 that cooperates with the reset member is provided between the two opposing adjusting bars 62, and the blocking component 8 is used to block the transmission pin 32.

[0042] The reset component includes a reset plate 24, which is fixed on the side of the inner open arm 2 near the transmission arm 3 and abuts against the transmission arm 3.

[0043] The blocking assembly 8 includes a blocking plate 81 and two oppositely arranged mounting blocks 82. The two oppositely arranged mounting blocks 82 are fixed to both sides of the blocking plate 81, and the blocking plate 81 is positioned between two adjusting strips 62. Each of the two adjusting strips 62 has a mounting groove 621 on its opposite side, and each mounting block 82 corresponds to one mounting groove 621, with the mounting block 82 positioned within its respective mounting groove 621. Furthermore, the mounting block 82 is a dovetail-shaped block, and the mounting groove 621 is a dovetail-shaped groove.

[0044] During the installation of the car lock, the worker aligns the mounting block 82 with the corresponding mounting slot 621 and then inserts the mounting block 82 into the corresponding mounting slot 621, so that the blocking plate 81 is placed between the two opposing adjusting strips 62. When the car lock is in operation, if the child lock is in the open state and the motor 71 is malfunctioning, the operator rotates the inner opening arm 2 in the opposite direction to the direction of opening the car lock. The inner opening arm 2 drives the reset plate 24 to rotate, and the reset plate 24 then drives the transmission arm 3 to rotate in the opposite direction. At this time, under the action of the inner wall of the first oblong hole 31, the transmission arm 3 can drive the transmission pin 32 to move towards the blocking plate 81. When the transmission pin 32 contacts the blocking plate 81, the transmission pin 32 drives the blocking plate 81 to move, and under the guidance of the second oblong hole 611 and the guide post 51, the transmission pin 32 can drive the adjusting arm 61 to reset. As the adjusting arm 61 resets, the two adjusting bars 62 on the adjusting arm 61 drive the transmission pin 32 to reset along the first oblong hole 31. When the transmission pin 32 moves to be opposite the control surface 211 of the control plate 21, the reset of the transmission pin 32 is completed. The operator then rotates the inner opening arm 2 in the direction of the transmission pin 32, so that the pinch-open / close mechanism re-engages with the drive arm 4, thereby realizing the function of manually resetting the transmission pin 32, that is, realizing the function of manually unlocking the child lock.

[0045] Reference Figure 4 and Figure 5 To reduce the possibility of children accidentally unlocking the child lock manually inside the vehicle, a pre-blocking assembly 9 is provided on the side of the adjusting arm 61 near the transmission arm 3. The pre-blocking assembly 9 includes a support plate 91, a pre-blocking post 92, and a spring 93. The support plate 91 is fixed to the side of the adjusting arm 61 near the transmission arm 3, and a clearance hole 911 is provided on the support plate 91. The pre-blocking post 92 is slidably connected in the clearance hole 911. The spring 93 is wound around the outside of the pre-blocking post 92, with one end of the spring 93 fixed to the pre-blocking post 92 and the other end fixed to the side of the support plate 91 near the adjusting bar 62. One of the adjusting bars 62 has a pre-blocking hole 622, and the end of the pre-blocking post 92 away from the support plate 91 is inserted into the pre-blocking hole 622 and extends into the adjusting gap 63.

[0046] When a child inside the car turns the inner opening arm 2 in the opposite direction to the unlocking direction, the inner opening arm 2 drives the reset plate 24 to rotate. The reset plate 24 then drives the transmission arm 3 to rotate in the opposite direction, and the transmission arm 3 in turn drives the transmission pin 32 to rotate towards the blocking plate 81. Before the transmission pin 32 contacts the blocking plate 81, the blocking plate 81 first contacts the pre-blocking post 92 and drives the pre-blocking post 92 to move towards the support plate 91, while the spring 93 is in a compressed state. Under the action of the spring 93's rebound force, pressure is applied to the pre-blocking post 92, causing the pre-blocking post 92 to block the transmission pin 32, increasing the resistance when the transmission pin 32 moves, making it difficult for the child inside the car to continue controlling the transmission pin 32 to move towards the blocking plate 81, thus reducing the possibility of the child inside the car manually unlocking the child lock.

[0047] The implementation principle of Embodiment 2 of this application is as follows: When the motor 71 is damaged, the operator rotates the inner opening arm 2 in the opposite direction to the unlocking direction of the car lock. The inner opening arm 2 controls the reset plate 24 to rotate in the opposite direction to the car lock. The reset plate 24 then applies pressure to the transmission pin 32, causing the transmission pin 32 to move towards the blocking plate 81. When the transmission pin 32 contacts the blocking plate 81, the transmission pin 32 applies pressure to the blocking plate 81 and drives the blocking plate 81 to move. Under the guidance of the second oblong hole 611 and the guide post 51, the blocking plate 81 can control the adjusting arm 61 to reset. The adjusting arm 61 then drives the transmission pin 32 to reset. After the transmission pin 32 is reset, the operator uses the inner opening arm 2 to control the transmission arm 3 to re-engage with the drive arm 4 so that the drive arm 4 can subsequently unlock the car door, thus realizing the function of manually closing the child lock.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A child lock structure for a car door lock, characterized in that: The device includes a first housing (1), an inner opening arm (2), a transmission arm (3), and a drive arm (4) for controlling the unlocking of the car door lock. The inner opening arm (2), the transmission arm (3), and the drive arm (4) are all rotatably connected to the first housing (1). The rotation axes of the inner opening arm (2) and the transmission arm (3) are on the same straight line. The rotation axis of the drive arm (4) is perpendicular to the rotation axes of the inner opening arm (2) and the transmission arm (3). The transmission arm (3) has a first waist-shaped hole (31), and a transmission pin (32) is slidably connected in the first waist-shaped hole (31). A second housing (5) is connected to the first housing (1). The second housing (5) is provided with an adjustment component (6) for adjusting the position of the transmission pin (32). When the adjustment component (6) adjusts the position of the transmission pin (32), the inner open arm (2) is misaligned with the transmission pin (32). The adjustment assembly (6) includes an adjustment arm (61) and two opposing adjustment bars (62). The adjustment arm (61) is slidably connected to the side of the second housing (5) near the first housing (1). The two opposing adjustment bars (62) are disposed on the side of the adjustment arm (61) near the transmission arm (3). An adjustment gap (63) is formed between the two opposing adjustment bars (62). The transmission pin (32) extends into the adjustment gap (63) and moves along the adjustment gap (63). The inner open arm (2) is provided with a reset component for manually resetting the transmission pin (32). The reset component abuts against the transmission arm (3). A blocking component (8) for blocking the transmission pin (32) is provided between the two opposing adjustment bars (62). The reset component includes a reset plate (24), which is disposed on the side of the inner open arm (2) near the transmission arm (3). The reset plate (24) abuts against the transmission arm (3). The blocking component (8) includes a blocking plate (81) and two oppositely arranged mounting blocks (82). The two oppositely arranged mounting blocks (82) are respectively disposed on both sides of the blocking plate (81). The two oppositely arranged adjusting strips (62) are each provided with a mounting groove (621). Each mounting block (82) corresponds to a mounting groove (621). The mounting block (82) is disposed in the corresponding mounting groove (621). The blocking plate (81) is disposed between the two opposite adjusting strips (62). The adjusting arm (61) is provided with a pre-blocking component (9) on the side near the transmission arm (3). The pre-blocking component (9) includes a support plate (91), a pre-blocking post (92), and a spring (93). The support plate (91) is located on the side of the adjusting arm (61) near the transmission arm (3). A clearance hole (911) is provided on the support plate (91). The pre-blocking post (92) is slidably connected in the clearance hole (911). One end of the spring (93) is connected to the pre-blocking post (92), and the other end is connected to the side of the support plate (91) near the adjusting bar (62). One of the adjusting bars (62) is provided with a pre-blocking hole (622). The pre-blocking post (92) extends into the adjusting gap (63) after passing through the pre-blocking hole (622). The end of the pre-blocking post (92) located in the adjusting gap (63) is located on the side of the blocking plate (81) near the transmission pin (32).

2. The child lock structure for a car door lock according to claim 1, characterized in that: Both of the two adjustment bars (62) that are set opposite to each other are bent.

3. The child lock structure for a car door lock according to claim 1, characterized in that: The second housing (5) is provided with a guide post (51), and the adjusting arm (61) is provided with a second waist-shaped hole (611). The guide post (51) is disposed in the second waist-shaped hole (611).

4. The child lock structure for a car door lock according to claim 3, characterized in that: The first housing (1) is provided with a drive assembly (7), which includes a motor (71), a worm gear (72) and a sector gear (73). The motor (71) is disposed on the first housing (1), the worm gear (72) is coaxially disposed on the output end of the motor (71), and the sector gear (73) is rotatably connected to the first housing (1). The rotation axis of the sector gear (73) is parallel to the rotation axis of the inner open arm (2) and the transmission arm (3). The worm gear (72) meshes with the sector gear (73). A connecting post (731) is provided on the side of the sector gear (73) near the second housing (5). A connecting hole (612) is provided on the adjusting arm (61), and the connecting post (731) is disposed in the connecting hole (612).

5. The child lock structure for a car door lock according to claim 1, characterized in that: The inner open arm (2) includes a control plate (21) and a trigger plate (22). The control plate (21) is rotatably connected to the first housing (1). The rotation axis of the control plate (21) is on the same straight line as the rotation axis of the transmission arm (3). The trigger plate (22) is located on the side of the control plate (21) close to the first housing (1). The control plate (21) and the trigger plate (22) are connected by a connecting plate (23). A clearance space (212) is formed between the control plate (21) and the trigger plate (22) for making way for the transmission pin (32) after position adjustment.

6. The child lock structure for a car door lock according to claim 5, characterized in that: The control panel (21) has a control surface (211) for controlling the transmission pin (32).

Images