Child locking mechanism for automobile door lock

Abstract

The child locking mechanism for the automobile door lock comprises an unlocking rocker arm, an inward opening rocker arm, a child protection torsional spring, a deflector rod, a conversion arm, an unlocking push rod and a transmission arm, the deflector rod is connected with the transmission arm in an inserted mode, an extrusion block is arranged at one end of the transmission arm, a boss is arranged on the extrusion block, an opening groove is formed in the conversion arm, and the unlocking push rod is arranged in the opening groove. The boss is arranged in the open groove, the conversion arm is connected with the unlocking push rod, and the shifting rod, the transmission arm, the extrusion block, the boss, the conversion arm and the unlocking push rod are sequentially connected to form a transmission mechanism. The device is simple in structure, convenient to use, low in manufacturing cost, high in safety, good in stability and suitable for large-scale popularization.

Description

Technical Field

[0001] The utility model relates to a child locking mechanism for a car door lock. Background Art

[0002] The child lock structure of the car door lock is mainly designed to protect children. The structure of the child lock is basically applied to the rear door lock of the car. Once the child lock is locked, the door cannot be opened by pulling the inner handle inside the car. The door can only be opened from the outside to prevent children from opening the door during driving, thereby protecting children. Although there is no clear requirement in the law that the rear door lock of the car must have a child lock, it has become a trend in the development of the automobile industry. The switch button of the child lock is usually arranged on the inner panel of the car door, and the child lock is unlocked and locked by turning the button. When the existing child lock is used, the problem is mainly reflected in the complexity of the structure. To complete the locking of the child lock, more parts are required to complete the transmission and locking actions, which also increases the failure rate of the door lock; therefore, it is necessary to improve the existing car door lock to make its child locking mechanism more simplified, with a lower failure rate and more convenient to use. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a child locking mechanism for automobile door locks which has simple structure, convenient use, low manufacturing cost, high safety, good stability, and is practical and widely used.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] A child locking mechanism for a car door lock comprises an unlocking rocker arm, an inner opening rocker arm, a child protection torsion spring, a lever, a conversion arm, an unlocking push rod and a transmission arm, wherein the lever and the transmission arm are plug-in connected, an extrusion block is provided at one end of the transmission arm, a boss is provided on the extrusion block, an opening groove is provided on the conversion arm, the boss is arranged in the opening groove, the conversion arm is connected to the unlocking push rod, and the lever, the transmission arm, the extrusion block, the boss, the conversion arm and the unlocking push rod are sequentially connected to form a transmission mechanism.

[0006] Preferably, a push block is provided on one side of the conversion arm, an annular groove is provided on the unlocking push rod, and the push block is arranged in the annular groove.

[0007] This arrangement, through the action of the push block and the annular groove, ensures that when the child lock is closed, the unlocking push rod does not contact the unlocking transmission arm; when the child lock is unlocked, the unlocking push rod can complete the normal pushing of the DUI8 unlocking transmission arm.

[0008] Preferably, an extension block is provided on one side of the transmission arm, and one end of the child-protection torsion spring is connected to the extension block.

[0009] This arrangement resets the transmission arm to an unlocked state through the action of the torsion spring.

[0010] Preferably, an insert is provided between the shifting rod and the transmission arm.

[0011] This arrangement limits the lever and the transmission arm by means of an insert, so that they can transmit normally after being connected, thereby increasing the stability of the transmission.

[0012] Preferably, the inward-opening rocker arm is connected to the unlocking push rod, the unlocking push rod is connected to the unlocking rocker arm, and the unlocking rocker arm is connected to the unlocking transmission arm.

[0013] This arrangement enables, when the child lock is in the unlocked state, the inner opening rocker arm pushes the unlocking push rod, and the unlocking rocker arm and the unlocking transmission arm are linked to separate the pawl from the ratchet wheel, thereby achieving the purpose of the inner opening door lock.

[0014] The utility model has the advantages of simple structure, convenient use, low manufacturing cost, high safety, good stability and convenient installation, and is practical and widely used. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below, but this does not limit the protection scope of the utility model.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the utility model.

[0018] Among them, 1. unlocking rocker arm, 2. inward opening rocker arm, 3. pawl shaft, 4. bushing, 5. return torsion spring of unlocking transmission arm, 6. ratchet, 7. pawl, 8. unlocking transmission arm, 9. child protection torsion spring, 10. lever, 11. conversion arm, 12. rocker arm shaft, 13. unlocking push rod, 14. inward opening torsion spring, 15. push block, 16. transmission arm, 17. extension block, 18. extrusion block, 19. boss, 20. annular groove, 21. insert. DETAILED DESCRIPTION

[0019] See also Figure 1 to Figure 2A child locking mechanism for a car door lock is shown, which includes an unlocking rocker arm 1, an inner opening rocker arm 2, a child protection torsion spring 9, a lever 10, a conversion arm 11, an unlocking push rod 13 and a transmission arm 16. The lever 10 and the transmission arm 16 are plug-in connected. One end of the transmission arm 16 is provided with an extrusion block 18, and the extrusion block 18 is provided with a boss 19. The conversion arm 11 is provided with an open groove, and the boss 19 is arranged in the open groove. The conversion arm 11 is connected to the unlocking push rod 13. The lever 10, the transmission arm 16, the extrusion block 18, the boss 19, the conversion arm 11, and the unlocking push rod 13 are connected in sequence to form a transmission mechanism.

[0020] Furthermore, a push block 15 is provided on one side of the conversion arm 11 , and an annular groove 20 is provided on the unlocking push rod 13 , and the push block 15 is disposed in the annular groove 20 .

[0021] Furthermore, an extension block 17 is provided on one side of the transmission arm 16 , and one end of the child-protection torsion spring 9 is connected to the extension block 17 .

[0022] Furthermore, an inserting piece 21 is provided between the lever 10 and the transmission arm 16 .

[0023] Furthermore, the inward-opening rocker arm 2 is connected to the unlocking push rod 13 , the unlocking push rod 134 is connected to the unlocking rocker arm 1 , and the unlocking rocker arm 1 is connected to the unlocking transmission arm 8 .

[0024] Furthermore, an inner-opening torsion spring 14 is installed on the inner-opening rocker arm 2, and the inner-opening torsion spring drives the inner-opening rocker arm to reset.

[0025] Furthermore, a rocker arm shaft 12 is mounted on the conversion arm 11, and the conversion arm rotates around the rocker arm shaft as an axis.

[0026] Furthermore, the ratchet 6 is connected to the pawl 7, and an unlocking transmission arm 8 is provided on one side of the pawl. The pawl is connected to the unlocking transmission arm, a bushing 4 is provided between the pawl and the unlocking transmission arm, and a pawl shaft 3 is provided in the middle of the sleeve. The pawl and the unlocking transmission arm rotate around the bushing and the pawl shaft; an unlocking transmission arm return torsion spring 5 is installed on the unlocking transmission arm.

[0027] When the utility model is in use, when the child lock needs to be opened, the lever is pushed, and the lever pushes the conversion arm to rotate through the transmission arm, the extrusion block, and the boss. The push block of the conversion arm acts with the annular groove, and the conversion arm pushes the unlocking push rod and limits the movement of the unlocking push rod. The unlocking push rod in turn limits the rotation of the inner opening rocker arm, so that the unlocking push rod cannot contact the unlocking rocker arm, so that the car door cannot be opened by the inner opening rocker arm.

[0028] When the child lock is on, the lever and the transmission arm are in the initial state. When the user opens the car door from the inside, the unlocking push rod is driven to move by the inner opening rocker arm (at this time, the rotating arm cannot limit the unlocking push rod), the unlocking push rod pushes the unlocking rocker arm to rotate, the unlocking rocker arm pushes the unlocking transmission arm to rotate, and the unlocking transmission arm drives the pawl to rotate, so that the pawl disengages from the ratchet and loses its restraint on the ratchet.

[0029] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A child locking mechanism for a car door lock, characterized in that: It includes an unlocking rocker arm, an inner-opening rocker arm, a child-proof torsion spring, a lever, a conversion arm, an unlocking push rod and a transmission arm. The lever and the transmission arm are plug-in connected. An extrusion block is provided at one end of the transmission arm, and a boss is provided on the extrusion block. An opening groove is provided on the conversion arm, and the boss is arranged in the opening groove. The conversion arm is connected with the unlocking push rod. The lever, the transmission arm, the extrusion block, the boss, the conversion arm and the unlocking push rod are connected in sequence to form a transmission mechanism.

2. A child locking mechanism for a vehicle door lock according to claim 1, characterized in that: A push block is provided on one side of the conversion arm, an annular groove is provided on the unlocking push rod, and the push block is arranged in the annular groove.

3. A child locking mechanism for a vehicle door lock according to claim 1, characterized in that: An extension block is provided on one side of the transmission arm, and one end of the child-protection torsion spring is connected to the extension block.

4. A child locking mechanism for a vehicle door lock according to claim 1, characterized in that: An insert is arranged between the shift lever and the transmission arm.

5. A child locking mechanism for a vehicle door lock according to claim 1, characterized in that: The inner opening rocker arm is connected to the unlocking push rod, the unlocking push rod is connected to the unlocking rocker arm, and the unlocking rocker arm is connected to the unlocking transmission arm.

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