RELATED APPLICATIONS

This application claims priority to China Application Serial Number 202120063565.X, filed Jan. 11, 2021, which is herein incorporated by reference.

BACKGROUND

Technical Field

The present disclosure relates to a linear actuator. More particularly, the present disclosure relates to a linear actuator having a reinforcing seat.

Description of Related Art

Linear actuators are wildly used in lots of fields, and the most common mechanism thereof is to use a motor to drive a threaded shaft such that a driven device can be driven by the linear actuator to do a linear movement such as the elevation of an elevating table. Since an axial force will be generated when rotating the threaded shaft, and the axial force will directly or indirectly push the case, the thickness of the case has to be thick enough to prevent damages; as a result, the weight of the linear actuator as well as the cost are increased.

Based on the aforementioned problems, how to ease the pressure on the case when operating the linear actuator becomes a pursued target for practitioners.

SUMMARY

According to one aspect of the present disclosure, a linear actuator is provided. The linear actuator includes a case, a driving module, a main gear, a reinforcing seat, and a threaded shaft. The case includes a first receiving space, a second receiving space communicated with the first receiving space, a bore communicated with the second receiving space, and an annular groove located at the second receiving space along an axial direction of the bore. The driving module is disposed within the first receiving space. The main gear is disposed within the second receiving space and linked with the driving module. The reinforcing seat is disposed within the second receiving space and connected to the main gear. The reinforcing seat includes a reinforcing seat body, and a reinforcing seat flange connected to the reinforcing seat body and engaged with the annular groove. One end of the threaded shaft passes through the bore and the main gear to be restricted by the reinforcing seat, and the threaded shaft is linked with the main gear.

