A self-priming tailgate door lock assembly

Abstract

The invention relates to a self-suction tail door lock assembly, which comprises a case, a case cover and a cover plate. A big gear wheel and a duplex gear which are engaged mutually are respectively arranged on the case through gear shafts; the big gear wheel and a self-suction main movement plate are in transmission connection; a ratchet wheel shaft and a pawl shaft are arranged on the case cover in parallel in a penetrating way; a ratchet wheel return spring, a self-suction auxiliary movement plate, a self-suction rocker arm return spring and a ratchet wheel are arranged on the ratchet wheel shaft; an open outside return spring, an open outside rocker arm, a pawl return spring and a pawl are arranged on the pawl shaft; the ratchet wheel and a signal rocker arm are in transmission connection; a position signal of the signal rocker arm is fedback to an automobile ECU (Engine Control Unit) circuit board through a microswitch and a circuit board sub-assembly, so that the movement of a large motor is controlled, a worm of the large motor drives the duplex gear and then transmits to the big gear wheel, and through the transmission of the self-suction main movement plate, a self-suction connecting plate and the self-suction auxiliary movement plate, the ratchet wheel is driven to be engaged with the pawl so as to be rotated to a full locking position. The self-suction tail door lock assembly provided by the invention is high in transmission efficiency, stable in structure, and powerful in functions, and can meet the ever-developing function requirement of the current automobile door lock.

Description

technical field [0001] The invention relates to the technical field of automobile locks, in particular to a self-priming tailgate door lock assembly. Background technique [0002] A car door lock with self-priming function usually consists of a lock body, an actuator, an outward opening mechanism, an internal opening mechanism, a self-priming cable and an actuator connection line. When the door is not completely closed (in a half-lock state), it can automatically Attract the door lock to the fully locked position to ensure that the door is safely closed. The existing self-priming side door lock assembly pulls the self-priming cable through the rotating mechanism in the actuator, and then drives the internal mechanism of the lock body to make the ratchet realize the self-priming function. The structure is complex, the manufacturing precision of the parts is high, and the required transmission force This requires a larger motor and gear reduction ratio to realize this functio...

AI Technical Summary

Problems solved by technology

The existing self-priming side door lock assembly pulls the self-priming cable through the rotating mechanism in the actuator, and then drives the internal mechanism of the lock body to make the ratchet realize the self-priming function. The structure is complex, the manufacturing precision of the parts is high, and the required transmission force This requires a larger motor and gear reduction ratio to realize this function, and the function is traditional and single, which cannot meet the increasing functional needs of current car door locks

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