Automobile door lock with child lock function

Abstract

According to the technical scheme, the automobile door lock with the child lock function is characterized in that the automobile door lock comprises an automobile lock body, the automobile lock body comprises a shell, a spring bolt and an ejector block, the ejector block and the spring bolt are each provided with a spring used for resetting, the ejector block is provided with an unlocking plate, the unlocking plate is fixedly connected with the ejector block, and the child lock function is achieved through the unlocking plate. A bulge B is arranged on the side edge of the unlocking plate, a transmission plate B is arranged close to the bulge B, and the transmission plate B is connected with a pull rod B; a blocking piece is arranged between the transmission plate B and the protrusion B, the blocking piece is provided with a movable plate, the blocking piece is movably connected with the movable plate, the blocking piece is provided with a movable structure, and the movable structure has an unfolded use state and a closed use state. According to the utility model, through the arrangement of the movable device, the separation blade obtains two movable states of folding and unfolding, and the separation blade does not collide with the moving transmission plate B when in the folding state; when the blocking piece is in an open state, the transmission plate B can make contact with and push the blocking piece.

Description

Technical Field

[0001] This utility model relates to the field of automotive door lock technology, and more specifically to an automotive door lock with a child lock function. Background Technology

[0002] Currently, there are various types of child safety lock mechanisms for car side door locks, including electric and manual types. When the child safety lock mechanism is engaged, the child cannot open the door by pulling the inner handle from inside the car. This prevents children from accidentally opening the door while the vehicle is in motion, thus ensuring the safety of children in the car and the vehicle itself.

[0003] However, there are still some defects in the above-mentioned existing technologies. Some existing child lock structures extend the control of the lever pushing the stop by placing a pad. When controlling the child lock to open and close, some children will frequently pull the handle to unlock the door lock. At this time, the push rod and the pad will move at the same time. The push rod is prone to colliding with the pad, reducing the service life of the push rod and the pad. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides a car door lock with a child lock function.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a car lock body, comprising a housing, a latch, and a top block. Both the top block and the latch are equipped with springs for resetting. The top block is provided with an unlocking plate, which is fixedly connected to the top block. The unlocking plate has a downwardly extending protrusion A. Below the unlocking plate is a transmission plate A near the protrusion A, connected to a pull rod A. A protrusion B is provided on the side of the unlocking plate, and a transmission plate B is located near the protrusion B, connected to the pull rod B. A baffle is provided between the transmission plate B and the protrusion B. The baffle is equipped with a movable plate, movably connected to the movable plate. The baffle has a movable structure with two working states: open and closed.

[0006] The present invention is further configured such that: the movable structure includes a support rod, a four-bar linkage, and a return spring C; the four-bar linkage is mounted on the support rod; the four-bar linkage has two states, open and closed; when the four-bar linkage is in the closed state, two acute angles are formed in its structure, with the acute angle closer to the transmission plate B being closer to the unlocking plate; and two return springs C are respectively mounted at the acute angle hinge of the four-bar linkage.

[0007] The present invention is further configured such that: the movable plate is connected to a drive motor, and the movable plate is provided with internal teeth adapted to the motor.

[0008] The present invention is further configured such that: the movable plate is movably connected to a driven plate, the driven plate is provided with a protrusion C, the movable plate is provided with a protrusion D adapted to the protrusion C, the number of protrusions D is two, the protrusion C is provided between the two protrusions D, the driven plate will swing with the movement of the movable plate, and one end of the driven plate is close to the transmission plate A.

[0009] The present invention is further configured such that: the latch is provided with a pad A, the pad A is close to the back side of the latch opening, and the center of the pad A and the protrusion D are both provided with through openings.

[0010] The present invention is further configured such that: the edge of the latch is provided with a push rod with a beveled protrusion, and a pressure sensor is provided below the push rod, with the pressure sensor close to the protrusion.

[0011] In summary, this utility model has the following beneficial effects: the movable device allows the baffle to have two active states: retracted and open. When the baffle contacts the unlocking plate, it is in the retracted state, at which time the child lock is released, and the baffle and the transmission plate B move synchronously to avoid collision. When the baffle contacts the unlocking plate, the baffle will push the baffle into the open state. At this time, the transmission plate B can make good contact with and push the baffle, so that the unlocking plate can move. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0013] Figure 2 This is a top view of the internal structure after shell removal in this embodiment;

[0014] Figure 3 This is a front view of the internal structure after shell removal in this embodiment;

[0015] Figure 4 This is a rear view of the internal structure after shell removal in this embodiment;

[0016] Figure 5 This is a schematic diagram of the interaction between the drive motor and the movable plate in this embodiment.

[0017] Reference numerals in the attached diagram: 1. Lock body; 2. Lock tongue; 21. Pad A; 3. Top block; 31. Unlocking plate; 311. Protrusion A; 312. Protrusion B; 4. Transmission plate A; 41. Pull rod A; 5. Transmission plate B; 51. Pull rod B; 6. Baffle; 61. Movable plate; 611. Internal teeth; 62. Drive motor; 63. Protrusion D; 7. Movable structure; 71. Support rod; 72. Four-bar linkage; 731. Return spring C; 8. Driven plate; 81. Protrusion C; 9. Push rod; 91. Angled protrusion; 92. Pressure sensor. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] This embodiment discloses a car door lock with a child lock function, such as Figures 1 to 5 As shown, the lock includes a car lock body 1, which includes a housing, a latch 2, and a top block 3. Both the top block 3 and the latch 2 are equipped with springs for resetting. The top block 3 has an unlocking plate 31, which is fixedly connected to the top block 3. When the latch engages the latch 2, the latch 2 rotates as the latch engages, and the top block 3 engages the rotating latch 2, ensuring a secure lock. The unlocking plate 31 has a downwardly extending protrusion A311. Below the unlocking plate 31, near the protrusion A311, is a transmission plate A4 connected to a pull rod A41. Pulling the transmission plate A4 causes it to rotate, pushing the protrusion A311 and causing the unlocking plate 31 to rotate, thus releasing the top block 3 from fixing the latch 2. The unlocking plate 31 has a protrusion B312 on its side, and near the protrusion B312, is a transmission plate B5 connected to the pull rod B51. A baffle 6 is provided between the transmission plate B5 and the protrusion B312. When the transmission plate B5 is pulled and rotated, it will push the baffle 6 to contact the protrusion B312, causing the protrusion B312 to rotate the unlocking plate 31. This causes the top block 3 to rotate and release the top block 3 from fixing the locking tongue 2. The baffle 6 is provided with a movable plate 61, which is movably connected to the baffle 6. The baffle moves along with the movement of the movable plate 61. The baffle 6 is provided with a movable structure 7, which can be switched between two states: open and closed.

[0020] Further improvements include the following: the movable structure 7 comprises a support rod 71, a four-bar linkage 72, and a return spring C731. The four-bar linkage 72 is mounted on the support rod 71, which is connected to a baffle 6, allowing the movable structure 7 to move synchronously with the baffle 6. The four-bar linkage 72 has two states: open and closed. In the open state, it is a larger quadrilateral, and in the closed state, it is a smaller parallelogram. As the four-bar linkage 72 approaches the unlocking plate 31, it is pushed from the closed state to the open state. When the four-bar linkage 72 is in the closed state, it forms two acute angles. The acute angle closer to the transmission plate B5 is close to the unlocking plate 31, ensuring that the contact surface of the transmission rod B is not fixed at an angle when the four-bar linkage 72 approaches the unlocking plate 31, allowing for effective pushing of the four-bar structure and preventing jamming. Two return springs C731 are respectively located at the acute angle hinge of the four-bar linkage 72, ensuring that the lead screw mechanism is in the closed state when the movable plate 61 moves away from the unlocking plate 31.

[0021] To further improve the design, the movable plate 61 is connected to a drive motor 62, and the movable plate 61 is provided with internal teeth 611 adapted to the motor. When the drive motor 62 is working, it will drive the internal teeth 611 on the movable plate 61 to rotate. When the internal teeth 611 rotate, they will drive the movable plate 61 to move, so that the movement of the movable plate 61 can be realized by the drive motor 62, making the control of the movable plate 61 simple and convenient.

[0022] Further improvements include a driven plate 8 movably connected to the movable plate 61. The driven plate 8 has a protrusion C81, and the movable plate 61 has two protrusions D63 that correspond to the protrusion C81. The protrusion C81 is positioned between the two protrusions D63. The driven plate 8 swings with the movement of the movable plate 61, with one end of the driven plate 8 close to the transmission plate A4. The driven plate 8 links the transmission plate A4 and the movable plate 61, so that when the transmission plate A4 is pulled to unlock, the transmission plate A4 pushes the driven plate 8, which in turn pushes the movable plate 61 to contact the unlocking plate 31, thus closing the movable structure 7. This allows the child lock to be released when the door is opened by the outer handle, facilitating passengers to freely get in and out of the vehicle from the inside.

[0023] To further improve the design, the latch 2 is provided with a pad A21. The pad A21 is located near the back side of the opening of the latch 2. The pad A21 is used to buffer impacts, so that when the latch enters the latch 2 quickly, the rotation of the latch 2 and impact on the housing are less likely to be damaged. The pad A21 and the protrusion D63 are both provided with through openings in their centers. The openings can increase the deformation of the pad A21 and the protrusion D63, so that they can better buffer the impact and protect the components when they are subjected to impacts.

[0024] To further improve the design, the edge of the latch 2 is provided with a push rod 9 featuring a beveled protrusion 91. A pressure sensor 92 is positioned below the push rod 9, close to the protrusion. When the latch 2 rotates, it pushes the push rod 9, with the degree of push increasing with the degree of rotation. The protrusion moves along with the push rod 9. The beveled design reduces the distance between the pressure sensor and the protrusion during its movement, allowing the protrusion to press against the pressure sensor 92. The pressure sensor 92 detects the degree of locking of the latch 2 by the pressure of the protrusion.

[0025] Working principle of this utility model

[0026] When using this invention, the movable plate 61 approaches the unlocking plate 31, and the movable device on the movable plate 61 opens under the pressure between the movable plate 61 and the unlocking plate 31, thus entering the child lock unlocking state. Rotating the transmission plate B5 contacts and pushes the unlocking plate 31 to unlock. The movable plate 61 can be manually rotated or driven by the motor to move the movable plate 61 away from the unlocking plate 31. The movable plate 61 that moves away will enter the retracted state under the elastic force of the return spring C731, thus entering the child lock activation state.

[0027] When the child lock is activated, the movable plate 61 is away from the unlocking plate 31, and the baffle 6 does not contact the unlocking plate 31. Pulling the transmission plate B5 will not push the unlocking plate 31, and the door will not unlock. The door can only be opened by pulling the transmission plate A4 to rotate it. Using A, the transmission plate A4 is pulled manually to push the driven plate 8 to rotate the movable plate 61, so that the movable structure 7 approaches and contacts the unlocking plate 31, thus opening the child lock and unlocking it. Alternatively, the child lock can be unlocked smoothly by manually rotating the movable plate 61 or by remotely controlling the movement of the motor.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A car door lock with a child lock function, comprising a car lock body (1), wherein the car lock body (1) includes a housing, a latch (2), and a top block (3), wherein the top block (3) and the latch (2) are each provided with a spring for resetting, characterized in that: The top block (3) is provided with an unlocking plate (31), which is fixedly connected to the top block (3). The unlocking plate (31) is provided with a downwardly extending protrusion A (311). Below the unlocking plate (31), there is a transmission plate A (4) near the protrusion A (311). The transmission plate A (4) is connected to the pull rod A (41). The side of the unlocking plate (31) is provided with a protrusion B (312). Near the protrusion B (312), there is a transmission plate B (5). The transmission plate B (5) is connected to the pull rod B (51). A baffle (6) is provided between the transmission plate B (5) and the protrusion B (312). The baffle (6) is provided with a movable plate (61). The baffle (6) is movably connected to the movable plate (61). The baffle (6) is provided with a movable structure (7). The movable structure (7) has two usage states: unfolded and closed.

2. A car door lock with child lock function according to claim 1, characterized in that: The movable structure (7) includes a support rod (71), a four-bar linkage (72), and a return spring C (731). The four-bar linkage (72) is mounted on the support rod (71). The four-bar linkage (72) has two states: open and closed. When the four-bar linkage (72) is in the closed state, two acute angles are formed in its structure. The acute angle near the transmission plate B (5) is close to the unlocking plate (31). There are two return springs C (731), which are respectively mounted at the acute angle hinge of the four-bar linkage (72).

3. A car door lock with child lock function according to claim 1, characterized in that: The movable plate (61) is connected to a drive motor (62), and the movable plate (61) is provided with internal teeth (611) adapted to the motor.

4. A car door lock with child lock function according to claim 3, characterized in that: The movable plate (61) is movably connected to the driven plate (8). The driven plate (8) is provided with a protrusion C (81). The movable plate (61) is provided with a protrusion D (63) that is adapted to the protrusion C (81). There are two protrusions D (63). The protrusion C (81) is located between the two protrusions D (63). The driven plate (8) will swing with the movement of the movable plate (61). One end of the driven plate (8) is close to the transmission plate A (4).

5. A car door lock with child lock function according to claim 4, characterized in that: The latch (2) is provided with a pad A (21), which is close to the back side of the opening of the latch (2). The center of the pad A (21) and the protrusion D (63) are both provided with through openings.

6. A car door lock with child lock function according to claim 1, characterized in that: The edge of the latch (2) is provided with a push rod (9) with a beveled protrusion (91), and a pressure sensor (92) is provided below the push rod (9), with the pressure sensor (92) close to the protrusion.

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