Linear motion actuator for hidden handles of automobile

Abstract

The invention discloses a linear motion actuator for hidden handles of an automobile. The actuator comprises the following parts of a housing provided with an electrical connection port and an outputport, and having a first chamber, a second chamber and a third chamber; a driving mechanism arranged in the first chamber; an output screw arranged in the third chamber and capable of extending out ofthe housing through the output port; and a transmission mechanism at least comprising an input worm, a duplicate gear and an output nut seat, wherein the duplicate gear is obliquely arranged in the second chamber and has a helical gear part and a transmission worm part integrally arranged with the helical gear part, the output nut seat is sleeved on the output screw, and the output nut seat has an internal thread and an output helical gear. The transmission mechanism of the actuator provided by the invention adopts a two-stage worm type transmission structure, thereby realizing the change ofthe output force of the motor, that is, converting the rotating action of the motor into the linear reciprocating action of the output screw, with stable transmission and low noise.

Description

technical field [0001] The invention relates to the application field of electric actuators, in particular to a linear motion actuator used for hidden handles of automobiles. Background technique [0002] Traditional car exterior door handles are basically manual. When the user unlocks the door lock signal, the user holds the handle and opens the door under the action of pulling force. The connection between the manual handle and the door is made by a manual elastic mechanical device. Connection, in order to facilitate the operator to pull open, the manual handle needs to be exposed on the surface of the door, which is not only easy to adhere to dust, but also causes problems such as wind resistance during high-speed driving. [0003] In order to solve the above problems, some manufacturers have released hidden car exterior handles. Hidden car exterior handles generally have three states, which are the initial hidden state, the pre-deployed state and the fully unfolded stat...

AI Technical Summary

Problems solved by technology

[0004] But generally speaking, if the exposed door handle is replaced with a hidden one, the overall volume of the vehicle will remain the same or become smaller, and the number of parts will increase accordingly. Therefore, there is an urgent need for a compact, small, light, Reliable and silent actuator in use for smooth push-out and retraction functions of automotive exterior handles

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