Child safety mechanism for a motor vehicle door lock

Abstract

The application discloses a child safety mechanism for a car door lock, which comprises a shell, a connecting plate, a pull rod and a driving mechanism. The connecting plate is rotatably connected to the shell through a first rotating shaft. One end of the pull rod is movably connected to the connecting plate, and the other end of the pull rod abuts against a release lever. When the pull rod abuts against the release lever, the release lever can be driven to rotate by the pull rod to unlock the car door. When the pull rod is separated from the release lever, the release lever cannot rotate to complete the locking of the child safety mechanism. The driving mechanism can drive the pull rod to rotate relative to the connecting plate, so that the pull rod is separated from the release lever, and the locking of the child safety mechanism is completed. Therefore, a person cannot unlock the door lock from the inside to open the door, and the safety of children sitting in the back row is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile door lock, in particular to a child safety mechanism for automobile door lock. BACKGROUND

[0002] During driving, children in the car often pull the inner handle of the automobile door lock out of curiosity, open the door, and fall out of the car, which brings life safety hazards to children. The existing electric child safety mechanism is relatively complex, has high manufacturing cost, and has many parts, so the failure rate is also high. SUMMARY

[0003] To solve the above technical problems, the present application provides a child safety mechanism for automobile door lock, which can be simple in structure and avoid children opening the door from the inside.

[0004] The technical scheme of the present application is: a child safety mechanism for automobile door lock, comprising a shell, the shell comprising:

[0005] A connecting plate is rotatably connected to the shell by a first rotating shaft;

[0006] A pull rod is movably connected to one end of the connecting plate, and the other end of the pull rod abuts against a release lever; when the pull rod abuts against the release lever, the release lever can be driven to rotate by the pull rod to unlock the door; when the pull rod is separated from the release lever, the release lever cannot rotate to complete the locking of the child safety mechanism;

[0007] Further, a drive mechanism is provided, which can drive the pull rod to rotate relative to the connecting plate to separate the pull rod from the release lever.

[0008] Further, one end of the pull rod movably connected to the connecting rod is provided with a stop block, the first rotating shaft is connected with a return spring, and one end of the return spring abuts against the stop block.

[0009] Further, one end of the pull rod located in the release lever is a "hook-shaped" structure, the release lever is provided with a connecting column matched with the "hook-shaped" structure, and the pull rod and the connecting column also have two states of abutment and separation.

[0010] Further, the drive mechanism comprises a drive assembly connected to the shell, a drive wheel and a drive block, the drive wheel and the drive block are both rotatably connected to the shell; the drive assembly can drive the drive wheel to rotate, the drive wheel drives the drive block to move towards the pull rod to separate the pull rod from the release lever.

[0011] Further, the driving assembly comprises a driving motor, a transmission worm is connected to the driving motor, the transmission worm is in mesh with the driving wheel and can drive the driving wheel to rotate.

[0012] Further, the driving assembly comprises a knob rotationally connected to the shell and a connecting rod movably connected to the knob, and the other end of the connecting rod is movably connected to the driving wheel.

[0013] Further, one side of the driving wheel is provided with a guide column, and the driving block is provided with a transverse groove matched with the guide column, and the guide column is connected to the transverse groove in a clamping manner.

[0014] Further, one side of the driving wheel is provided with a signal switch connected to the shell.

[0015] Further, one side of the pull rod is provided with a limiting column connected to the shell.

[0016] The beneficial technical effects of the present application are:

[0017] 1. The driving assembly is divided into two modes of electric and manual, and the driving modes of the two modes can realize the locking or unlocking of the child safety mechanism, which is convenient for personnel to select according to their experience.

[0018] 2. The point close to the release rod of the pull rod is a hook-shaped structure, which is matched with the connecting column to quickly and stably drive the release rod to rotate, thereby achieving the purpose of unlocking the car door.

[0019] 3. The first rotating shaft is connected with a return spring, the elasticity of the return spring can reset the pull rod, and the elasticity of the return spring makes the pull rod abut against the release rod, avoiding the phenomenon of falling off in the unlocking process.

[0020] 4. The pull rod is movably connected with the connecting plate, the structure is simple and reasonable, when the position of the pull rod remains unchanged, the child safety mechanism is in the unlocked state, when the pull rod rotates relative to the connecting plate, the child safety mechanism is in the locked state.

[0021] 5. The driving wheel and the driving block are connected through the guide column and the transverse groove, the driving wheel drives the driving block to rotate through the guide column, the driving block extrudes the pull rod, and then drives the pull rod to rotate relative to the connecting plate, so as to realize the separation between the pull rod and the release rod, and the above-mentioned setting structure is simple and the driving mode is convenient and fast.

[0022] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, the following is a preferred embodiment of the present application and the detailed description of the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Fig. 1 is a schematic diagram of the overall structure of the child safety in the unlocked state according to the present application;

[0024] Figure 2 Fig. 2 is a schematic diagram of the overall structure of the child safety in the locked state according to the present application;

[0025] Figure 3 Fig. 3 is a schematic diagram of the overall structure of the driving mechanism according to the present application, embodiment 1;

[0026] Figure 4 Fig. 4 is a schematic diagram of the structure of the connecting rod and the connecting plate according to the present application;

[0027] Figure 5 Fig. 5 is a schematic diagram of the overall structure of the driving mechanism according to the present application, embodiment 2;

[0028] Figure 6 Fig. 6 is a schematic diagram of the structure of the driving wheel according to the present application;

[0029] Figure 7 Fig. 7 is a schematic diagram of the structure of the release rod according to the present application.

[0030] The reference signs are as follows:

[0031] 100, housing; 200, release rod; 210, connecting column; 300, driving mechanism; 310, driving motor; 311, transmission worm; 312, driving wheel; 3121, toothed structure; 3122, arc surface; 313, driving block; 314, guide column; 315, transverse groove; 320, knob; 321, connecting rod; 400, connecting plate; 410, first rotating shaft; 420, return spring; 500, connecting rod; 510, stop block. DETAILED DESCRIPTION

[0032] In order to more clearly understand the technical means of the present application and to be able to implement the content of the specification, the specific embodiments of the present application are described in further detail below in conjunction with the drawings and examples, and the following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so as to describe the embodiments of the present application described herein.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship described in the embodiments and shown in the accompanying drawings, or the orientation or positional relationship that the product of this invention is usually placed in during use. They are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] There are two main modes for child insurance: when the child insurance is locked, people cannot open the car door from the inside; when the child insurance is unlocked, people can open the car door from the inside.

[0036] It should be noted that the release lever's function is to unlock the car door, making it easier for people to open it. When the release lever is turned, the locking assembly located inside the door lock housing moves away from the latch, and the latch returns to its original position using the elasticity of a spring, allowing people to open the car door.

[0037] When the release lever cannot be turned, the locking component located inside the door lock housing abuts against the latch, preventing the latch from resetting and thus preventing people from opening the car door.

[0038] Example 1:

[0039] like Figure 1 and Figure 2 As shown, the present invention specifically relates to a child safety mechanism for car door locks, comprising a housing 100, wherein the housing 100 includes:

[0040] A connecting plate 400 is rotatably connected to the housing 100 via a first rotating shaft 410; the connecting plate 400 is rotatable along the axial direction of the first rotating shaft 410.

[0041] A pull rod 500, one end of which is movably connected to the connecting plate 400, and the other end of which abuts against the release rod 200; when the pull rod 500 abuts against the release rod 200, the release rod 200 can be driven to rotate to unlock the car door; when the pull rod 500 is separated from the release rod 200, the release rod 200 cannot rotate to complete the locking of the child safety mechanism;

[0042] It should be noted that the child insurance has two states: locked and unlocked.

[0043] In the unlocked state, the lever 500 and the release lever 200 abut against each other. Since the lever 500 is movably connected to the connecting plate 400, when the connecting plate 400 rotates along the axial direction of the first rotating shaft 410, it can drive the lever 500 to move. Since the lever 500 and the release lever 200 abut against each other, the lever 500 drives the release lever 200 to rotate during the movement, thereby allowing the door to open.

[0044] When locked, lever 500 separates from release lever 200, and release lever 200 loses its power to rotate, thus preventing the car door from opening and ensuring the safety of children inside the car.

[0045] It also includes a drive mechanism 300, which can drive the pull rod 500 to rotate relative to the connecting plate 400, so that the pull rod 500 is separated from the release rod 200.

[0046] The drive mechanism 300 is a structure that can drive the pull rod 500 to rotate relative to the connecting plate 400. The drive mechanism 300 separates the pull rod 500 from the release rod 200, thereby achieving the purpose of locking.

[0047] The aforementioned child insurance mechanism is simple in structure and easy to operate. It not only achieves the purpose of child insurance and ensures the safety of children in the car, but also saves a certain amount of operating space within the car lock housing without affecting its function, making the car lock simpler, more convenient, and smaller.

[0048] The pull rod 500 is movably connected to one end of the connecting rod and is provided with a stop block 510. The first rotating shaft 410 is connected to a return spring 420, and one end of the return spring 420 abuts against the stop block 510.

[0049] A return spring 420 is sleeved on the surface of the first rotating shaft 410, with one end of the return spring 420 abutting against the housing 100 and the other end abutting against the stop block 510. There is a gap between the stop block 510 and the connecting plate 400. When one side of the pull rod 500 is subjected to an external force, causing the pull rod 500 to rotate relative to the connecting plate 400, the return spring 420 abutting against the stop block 510 is continuously compressed, thus locking the child safety lock.

[0050] When the external force on one side of the lever 500 disappears, the elasticity of the return spring 420 causes the lever 500 to rotate in the opposite direction relative to the connecting plate 400. At this time, under the action of the return spring, the lever 500 returns to its original position. Meanwhile, the other end of the lever 500 abuts against the release lever 200 to unlock the child safety.

[0051] In addition, the presence of the return spring 420 ensures that when the child safety is unlocked, the lever 500 always abuts against the release lever 200, preventing the lever 500 from disengaging from the release lever 200 during other actions.

[0052] like Figure 2 , Figure 4 and Figure 7 As shown, the pull rod 500 has a "hook" structure at one end of the release rod 200. The release rod 200 is provided with a connecting post 210 for use with the "hook" structure. The pull rod 500 and the connecting post 210 also have two states: contact and separation.

[0053] By designing one end of the pull rod 500 as a "hook" to facilitate contact with the connecting post 210 on the release rod 200, the pull rod 500 hooks the connecting post 210 and stably drives the release rod 200 to rotate, thereby achieving the purpose of unlocking. When the "hook" structure of the pull rod 500 separates from the connecting post 210, it achieves the purpose of locking.

[0054] like Figure 2 , Figure 3 and Figure 4 As shown, the drive mechanism 300 includes a drive assembly, a drive wheel 312, and a drive block 313 connected to the housing 100. The drive wheel 312 and the drive block 313 are both rotatably connected to the housing 100. The drive assembly can drive the drive wheel 312 to rotate, and the drive wheel 312 drives the drive block 313 to rotate toward the pull rod 500 to separate the pull rod 500 from the release rod 200.

[0055] The drive mechanism 300 is a structure that can drive the pull rod 500 to move. It can be a motor drive, a linkage drive, or a gear drive, etc. In this embodiment, the preferred method is to drive the drive block 313 to rotate, and the pull rod 500 is separated from the release rod 200 by the drive block 313.

[0056] like Figure 3 , Figure 4 and Figure 6 As shown, the drive wheel 312 has a fan-shaped structure, and a portion of the arc-shaped side of the drive wheel 312 has a toothed structure 3121, while the other portion of the arc-shaped side of the drive wheel 312 is a normal arc-shaped surface 3122. The drive block 313 is located on one side of the drive wheel 312. The drive block 313 and the pull rod 500 have two states: contact and separation. When the drive block 313 contacts the pull rod 500, the pull rod 500 rotates relative to the connecting rod. At this time, the pull rod 500 separates from the release rod 200 to achieve the purpose of locking the child safety lock.

[0057] When the drive block 313 is separated from the pull rod 500, the pull rod 500 is always in contact with the release rod 200 through the return spring 420 connected to the first rotating shaft 410, so as to complete the unlocking of the child safety.

[0058] The drive assembly includes a drive motor 310, which is connected to a transmission worm gear 311. The transmission worm gear 311 meshes with the drive wheel 312 and can drive the drive wheel 312 to rotate.

[0059] The engagement of the transmission worm gear 311 with the toothed structure 3121 of the drive wheel 312 ensures stability and accuracy during power transmission.

[0060] The drive wheel 312 is provided with a guide post 314 on one side, and the drive block 313 is provided with a transverse groove 315 that cooperates with the guide post 314. The guide post 314 is snapped into the transverse groove 315.

[0061] It should be noted that the guide post 314 is connected to the arc-shaped surface 3122 of the drive wheel 312. When the drive motor 310 drives the drive wheel 312 to rotate through the transmission worm gear 311, the guide post 314 connected to the arc-shaped surface 3122 of the drive wheel 312 rotates synchronously. Since the guide post 314 is engaged in the transverse groove 315 of the drive block 313, when the drive wheel 312 rotates, the drive block 313 rotates synchronously and presses against the pull rod 500.

[0062] A signal switch connected to the housing 100 is provided on one side of the drive wheel 312, and the rotation stroke of the drive wheel 312 can be effectively controlled by setting the signal switch.

[0063] One side of the pull rod 500 is provided with a limiting post (not shown in the figure) connected to the housing to limit the position of the pull rod 500.

[0064] Example 2:

[0065] This embodiment is largely the same as the structure in Embodiment 1, except that:

[0066] like Figure 1 , Figure 2 and Figure 5 As shown, the drive assembly includes a knob 320 rotatably connected to the housing 100 and a connecting rod 321 movably connected to the knob 320. The other end of the connecting rod 321 is movably connected to the drive wheel 312.

[0067] It should be noted that the knob 320 is rotatably connected to the housing 100, one end of the connecting rod 321 is movably connected to the housing 100, and the other end of the connecting rod 321 is movably connected to the lower part of the drive wheel 312. When the knob 320 is turned with the key, the knob 320 drives the connecting rod 321 to rotate, which in turn drives the drive wheel 312 to rotate. Since the drive wheel 312 and the drive block 313 are connected by the guide post 314, when the drive wheel 312 rotates, the drive block 313 rotates synchronously and presses against the pull rod 500, causing the pull rod 500 to separate from the release rod 200, thereby completing the locking of the child safety.

[0068] Similarly, when the key is turned in the reverse direction, the knob 320 drives the connecting rod 321 to rotate, which in turn drives the drive wheel 312 to rotate. Since the drive wheel 312 and the drive block 313 are connected by the guide post 314, when the drive wheel 312 rotates, the drive block 313 rotates synchronously and separates from the pull rod 500. At this time, after the pull rod 500 loses the pressure of the external force, it is elastically reset by the return spring 420 connected to the first rotating shaft 410, so that the pull rod 500 and the release rod 200 abut against each other to complete the unlocking of the child safety.

[0069] The above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and are not intended to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention.

Claims

1. A child insurance mechanism for car door locks, characterized in that, Includes a housing (100), wherein the housing (100) includes: A connecting plate (400) is rotatably connected to the housing (100) via a first rotating shaft (410); A pull rod (500) is provided, one end of which is movably connected to the connecting plate (400), and the other end of which abuts against the release rod (200). When the pull rod (500) abuts against the release rod (200), the release rod (200) can be driven to rotate through the pull rod (500) to unlock the car door. When the pull rod (500) is separated from the release rod (200), the release rod (200) cannot rotate to complete the locking of the child safety mechanism. It also includes a drive mechanism (300) that can drive the pull rod (500) to rotate relative to the connecting plate (400) so that the pull rod (500) separates from the release rod (200); The drive mechanism (300) includes a drive assembly, a drive wheel (312), and a drive block (313) connected to the housing (100). The drive wheel (312) and the drive block (313) are rotatably connected to the housing (100). The drive assembly can drive the drive wheel (312) to rotate, and the drive wheel (312) drives the drive block (313) to rotate toward the pull rod (500) to separate the pull rod (500) from the release rod (200).

2. The child insurance mechanism for car door locks according to claim 1, characterized in that, The pull rod (500) is movably connected to one end of the connecting plate and is provided with a stop block (510). The first rotating shaft (410) is connected to a return spring (420), and one end of the return spring (420) abuts against the stop block (510).

3. The child insurance mechanism for car door locks according to claim 2, characterized in that, The pull rod (500) has a "hook" structure at one end of the release rod (200). The release rod (200) is provided with a connecting post (210) for use with the "hook" structure. The pull rod (500) and the connecting post (210) also have two states: contact and separation.

4. The child insurance mechanism for car door locks according to claim 1, characterized in that, The drive assembly includes a drive motor (310), which is connected to a transmission worm (311). The transmission worm (311) meshes with the drive wheel (312) and can drive the drive wheel (312) to rotate.

5. The child insurance mechanism for car door locks according to claim 1, characterized in that, The drive assembly includes a knob (320) rotatably connected to the housing (100) and a connecting rod (321) movably connected to the knob (320), the other end of the connecting rod (321) being movably connected to the drive wheel (312).

6. The child insurance mechanism for car door locks according to claim 4 or 5, characterized in that, The drive wheel (312) has a guide post (314) on one side, and the drive block (313) has a transverse groove (315) that works with the guide post (314). The guide post (314) is engaged with the transverse groove (315).

7. The child insurance mechanism for car door locks according to claim 6, characterized in that, A signal switch connected to the housing (100) is provided on one side of the drive wheel (312).

8. The child insurance mechanism for car door locks according to claim 1, characterized in that, One side of the pull rod (500) is provided with a limiting post connected to the housing (100).

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