Child protection lock mechanism of automobile door lock

Abstract

According to the technical scheme, the child protection lock mechanism of the automobile door lock is characterized by comprising an automobile door lock body and a shell, an opening rocker arm is arranged on the shell and comprises an outward opening rocker arm and an inward opening rocker arm, a transmission rod A and a transmission rod B are movably arranged on the shell, the middle of the transmission rod A and the middle of the transmission rod B are movably connected with the shell, and the transmission rod A and the transmission rod B are movably connected with the shell. The transmission rod A and the transmission rod B are movably connected with the outward-opening rocker arm and the inward-opening rocker arm respectively, one end of the transmission rod A is connected with the transmission rod C, the other end of the transmission rod A is connected with the outward-opening rocker arm, and the transmission rod A is movably connected with the transmission rod D making contact with the automobile door lock body. The transmission rod B is provided with a transmission block, and the transmission rod C has an opening state and a closing state. According to the utility model, through the arrangement of the transmission rod C which controls the opening state and the closing state through simple rotation, the mutual independent action and the synchronous action of the inner opening swing and the transmission rod D are simply and quickly realized, so that the control on the automobile door lock main body is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile door lock, more specifically, it relates to a child protection lock mechanism of automobile door lock. BACKGROUND

[0002] At present, the child protection lock mechanism of the automobile side door lock in the prior art has electric, manual and other types, when the child protection lock mechanism is armed, the child cannot open the door from the inside, so that the child cannot open the door by mistake when the vehicle is running, thereby ensuring the safety of the child in the vehicle and driving.

[0003] At present, the patent with the publication number CN202323579745.1 discloses a mechanical child protection lock mechanism of automobile side door lock, which belongs to the technical field of automobile door lock, and particularly relates to a mechanical child protection lock mechanism of automobile side door lock.

[0004] However, the child protection lock mechanism has the following defects: the structure is relatively complex, the volume is large, and the assembly is difficult, which increases the cost. UTILITY MODEL CONTENTS

[0005] In view of the defects in the prior art, the utility model provides a child protection lock mechanism of automobile door lock.

[0006] To achieve the above object, the utility model provides the following technical scheme: a vehicle door lock main body and a shell are provided, the shell is provided with an opening rocker arm, the opening rocker arm comprises an outer opening rocker arm and an inner opening rocker arm, a transmission rod A and a transmission rod B are movably arranged on the shell, the middle parts of the transmission rod A and the transmission rod B are movably connected with the shell, the transmission rod A and the transmission rod B are movably connected with the outer opening rocker arm and the inner opening rocker arm respectively, one end of the transmission rod A is connected with a transmission rod C, the other end of the transmission rod A is connected with the outer opening rocker arm, the transmission rod A is movably connected with a transmission rod D which contacts the vehicle door lock main body, the transmission rod B is provided with a transmission block; the transmission rod C has two states of opening and closing, the transmission rod C is close to the transmission rod A in the closed state, and the transmission rod C is away from the transmission rod A in the open state.

[0007] The utility model is further provided with a convex surface and a slotted inclined surface on the transmission rod C.

[0008] The utility model further sets up: the lock body trigger of car door lock main part includes lock tongue, the lock body trigger is provided with the convex A of bending.

[0009] The utility model further sets up: the transmission rod D is provided with guide rail, the transmission rod B is provided with the convex C of adaptation, the convex C sets up in the guide rail.

[0010] The utility model further sets up: the transmission rod D has the convex B of bending, the convex B is close to convex A.

[0011] The utility model further sets up: the opening rocker arm is provided with sliding slot.

[0012] The utility model further sets up: the transmission rod A and transmission rod B are provided with the reinforcing link, and the reinforcing rod two ends respectively contact transmission rod A and transmission rod B and the shell connecting point.

[0013] The utility model further sets up: the transmission rod A and transmission rod B are provided with reset spring.

[0014] Summarized above, the utility model has following beneficial effect: the utility model sets up and through simple rotation control opening, the transmission block simple and fast realization of closing two kinds of states drive link independent action and synchronous action of inner opening rocker and transmission rod D, through the setting of guide rail and convex C, make convex C can assist transmission rod D and make action stable reliable, make the action between transmission rod B and transmission rod A relatively independent at the same time, simple structure, convenient assembly. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is the structural schematic diagram of this embodiment;

[0016] Fig. 2 It is the first perspective structural view of this embodiment to shell;

[0017] Fig. 3 It is the second perspective structural view of this embodiment to shell;

[0018] Fig. 4 It is the structural schematic diagram of transmission rod C of this embodiment;

[0019] Fig. 5 It is the structural schematic diagram of this embodiment to close state;

[0020] Fig. 6 It is the structural schematic diagram of this embodiment to open state;

[0021] Reference signs: 1, door lock main body; 11, lock body trigger; 111, convex A; 2, shell; 3, opening rocker arm; 31, outer opening rocker arm; 32, inner opening rocker arm; 33, sliding slot; 4, transmission rod A; 5, transmission rod B; 51, transmission block; 52, convex C; 6, transmission rod C; 61, convex surface; 62, slot inclined surface; 7, transmission rod D; 71, guide rail; 72, convex B; 8, reinforcing connecting rod; 9, return spring. DETAILED DESCRIPTION

[0022] The utility model makes further detailed description in combination with the drawings.

[0023] The embodiment discloses a kind of child protection lock mechanisms of automobile door lock, as shown in figure Figs. 1 to 6 Including door lock main body 1, shell 2, the shell 2 is provided with opening rocker arm 3, the opening rocker arm 3 includes outer opening rocker arm 31, inner opening rocker arm 32, the shell 2 is movably provided with transmission rod A 4, transmission rod B 5, the middle part of transmission rod A 4 and transmission rod B 5 is movably connected with shell 2, transmission rod A 4 and transmission rod B 5 are movably connected with outer opening rocker arm 31 and inner opening rocker arm 32 respectively, one end of transmission rod A 4 is connected with transmission rod C 6, the other end of transmission rod A 4 is connected with outer opening rocker arm 31, when pulling outer opening rocker arm 31, it will drive transmission rod A 4 to move, transmission rod A 4 movably connects with transmission rod D 7 that contacts door lock main body 1, when transmission rod A 4 moves, it can directly drive transmission rod D 7 to act, when transmission rod D 7 moves, it will contact door lock main body 1, so that door lock main body 1 is unlocked;Transmission rod B 5 is provided with transmission block 51, when transmission block 51 reduces the impact of transmission rod B 5 to contact transmission rod C 6, increase service life;Transmission rod C 6 has two states of opening and closing, transmission rod C 6 is close to contact transmission rod A 4 in closed state, transmission rod C 6 is away from transmission rod A 4 in opening state.Pull inner opening rocker arm 32 when transmission rod C 6 is in closed state, inner opening rocker arm 32 will drive transmission rod B 5 to move, so that transmission block 51 contacts and pushes transmission rod C 6, transmission rod C 6 will push transmission rod A 4 to move, transmission rod A 4 will push transmission rod D 7, so that transmission rod B 5 and transmission rod D 7 are synchronous action, simply realize the unlocking of door lock main body 1, pull inner opening rocker arm 32 when transmission rod C 6 is in opening state, transmission block 51 contacts transmission rod C 6, but it is difficult to push transmission rod C 6, and door lock main body 1 cannot be unlocked.

[0024] Further improvement, the transmission rod C6 is provided with a convex surface 61 and a slotted inclined surface 62. The convex surface 61 is a circular arc convex surface, and the transmission block 51 contacts the convex surface 61 in the closed state, so that the transmission rod C rotates under the force of the convex surface 61; in the open state, the transmission block 51 contacts and pushes the slotted inclined surface 62, and the slotted inclined surface 62 transmits the force to the transmission rod C6, so that the transmission rod C6 reversely rotates and moves away from the transmission rod A4.

[0025] Further improvement, the door lock body 1 comprises a lock body trigger 11 and a lock tongue, and the lock body trigger 11 is provided with a bent convex A111. The lock body trigger 11 is used for limiting the movement of the lock tongue, so that the convex A111 is pushed to drive the lock catch plate to move, thereby expanding the contact space of the lock catch plate.

[0026] Further improvement, the transmission rod D7 is provided with a guide rail 71, and the transmission rod B5 is provided with a corresponding convex C52, and the convex C52 is arranged in the guide rail 71. The arrangement of the guide rail 71 enables the transmission rod D7 to move along the guide rail 71, so that the movement of the transmission rod D7 is stable and controllable, and the arrangement of the guide rail 71 enables the transmission rod B5 to move without driving the transmission rod D7 through its own movement.

[0027] Further improvement, the transmission rod D7 is provided with a curved convex B72, and the convex B72 is close to the convex A111. When the transmission rod D7 moves, the convex B72 can be close to and contact the convex A111, and the arrangement of the convex B72 enables the movement of the transmission rod D7 to transmit the lock body trigger 11 for unlocking through the contact between the convex B72 and the convex A111.

[0028] Further improvement, the transmission rod A4 and the transmission rod B5 are provided with a reinforcing connecting rod 8, and the two ends of the reinforcing connecting rod 8 respectively contact the transmission rod A4 and the transmission rod B5 and the connecting points of the housing 2. The connecting points of the transmission rod A4 and the transmission rod B5 and the housing 2 are key parts that bear force. When the transmission rod transmits force, the connecting points will be subjected to various complex forces such as tension, compression, bending and torsion, and the connecting points are prone to fatigue cracks. The reinforcing connecting rod 8 can reduce the stress amplitude of the connecting points under alternating load, thereby slowing down the initiation and expansion of fatigue cracks, prolonging the service life of the connecting rod structure, and reducing the risk of failure caused by fatigue damage; in the case of high vibration, such as after the automobile engine works, the reinforcing plate can better ensure the integrity of the connecting point, so that the utility model can reliably operate.

[0029] Further improvement, the opening rocker arm 3 is provided with a sliding slot 33. The setting of the sliding slot 33 makes a certain idle stroke when pulling the opening rocker arm 3 to unlock the door lock body 1, so that the door lock body 1 cannot be immediately unlocked, but there is a certain buffer gap, reducing the misoperation and increasing the safety of the utility.

[0030] Further improvement, the transmission rod A4 and the transmission rod B5 are provided with a reset spring 9. The reset spring 9 is used to restore the lock catch component to the initial position by using the elastic potential energy, so that the normal use of the next time is facilitated; during the operation of the lock catch device, especially during the rapid closing or under the external impact, the reset spring 9 can play a buffering role.

[0031] Working principle of the utility model

[0032] When unlocking in the closed state, the inner opening rocker arm 32 is pulled, the transmission rod B5 is pulled by the inner opening rocker arm 32, the transmission block 51 arranged on the transmission rod B5 is contacted and pushed under the action of the transmission rod B5 to the transmission rod C6 in the closed state, the transmission rod C6 transmits the pushing force to the transmission rod A4, the transmission rod A4 pushes the transmission rod D7, the convex A111 contacts and pushes the convex B72, so that the door lock body 1 is unlocked; the outer opening rocker arm 31 is pulled, the outer opening rocker arm 31 can directly pull the transmission rod A4, so that the transmission rod D7 acts, thereby unlocking the door lock body 1.

[0033] When unlocking in the opening state, the inner opening rocker arm 32 is pulled, the transmission rod B5 rotates to make the transmission block 51 close to the transmission rod C6, the transmission block 51 in the opening state of the transmission rod C6 contacts and pushes the slot inclined surface 62, so that the transmission rod C6 reversely rotates and is away from the transmission rod A4. The next step cannot be performed, and the door lock body 1 cannot be opened and unlocked, at this time, the transmission rod A4 can be directly pulled by the outer opening rocker arm 31 to drive the transmission rod D7 to unlock.

[0034] The above only describes the preferred embodiment of the utility model, and is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. within the design concept of the utility model should be included in the protection scope of the utility model.

Claims

1. A child protection lock mechanism for a vehicle door lock, comprising a door lock body (1), a housing (2) provided with an opening rocker arm (3), characterized in that: The opening rocker arm (3) comprises an outer opening rocker arm (31) and an inner opening rocker arm (32), the housing (2) is movably provided with a transmission rod A (4) and a transmission rod B (5), the middle parts of the transmission rod A (4) and the transmission rod B (5) are movably connected with the housing (2), the transmission rod A (4) and the transmission rod B (5) are movably connected with the outer opening rocker arm (31) and the inner opening rocker arm (32) respectively, one end of the transmission rod A (4) is connected with a transmission rod C (6), the other end of the transmission rod A (4) is connected with the outer opening rocker arm (31), the transmission rod A (4) is movably connected with a transmission rod D (7) which contacts the door lock body (1), the transmission rod B (5) is provided with a transmission block (51); the transmission rod C (6) has two states of opening and closing, the transmission rod C (6) is close to the transmission rod A (4) in the closed state, and the transmission rod C (6) is away from the transmission rod A (4) in the open state.

2. A child safety lock mechanism for a vehicle door lock according to claim 1, characterized in that: The transmission rod C (6) is provided with a convex surface (61) and a slotted inclined surface (62).

3. A child safety lock mechanism for a vehicle door lock as defined in claim 1, characterized in that: The door lock body (1) comprises a lock body trigger (11) and a lock tongue, the lock body trigger (11) is provided with a bent convex A (111).

4. A child safety lock mechanism for a vehicle door lock as defined in claim 3, characterized in that: The transmission rod D (7) is provided with a guide rail (71), the transmission rod B (5) is provided with a corresponding convex C (52), and the convex C (52) is arranged in the guide rail (71).

5. A child safety lock mechanism for a vehicle door lock as defined in claim 4, characterized in that: The transmission rod D (7) is provided with a curved convex B (72), and the convex B (72) is close to the convex A (111).

6. A child safety lock mechanism for a vehicle door lock as defined in claim 1, characterized in that: The transmission rod A (4) and the transmission rod B (5) are provided with a reinforcing connecting rod (8), and the two ends of the reinforcing connecting rod (8) respectively contact the connecting points of the transmission rod A (4) and the transmission rod B (5) with the housing.

7. A child safety lock mechanism for a vehicle door lock as defined in claim 1, wherein: The opening rocker arm (3) is provided with a sliding slot (33).

8. A child safety lock mechanism for a vehicle door lock as defined in claim 1, characterized in that: The transmission rod A (4) and the transmission rod B (5) are provided with a reset spring (9).

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