Patent ID: 11879907
Assignee: AAC KAITAI TECHNOLOGIES (WUHAN) CO., LTD
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. The acceleration sensor of claim 4, wherein there are four seesaw structures formed a nested structure with each other, and the four seesaw structures are sequentially defined as a first seesaw structure, a second seesaw structure, a third seesaw structure and a fourth seesaw structure along a clockwise direction; the outer coupling unit further comprises four accommodating grooves recessed outward from inner sides of the two first side beams and inner sides of the two second side beams;
a torsion spring of the first seesaw structure and a torsion spring of the third seesaw structure are both arranged parallel to the first direction and staggered along the second direction;
two ends of a connecting beam of the first seesaw structure are provided with the first Z-axis capacitance plate, wherein the first Z-axis capacitance plate at one end is located in the accommodating groove formed by a recession of one of the two second side beam, and the first Z-axis capacitance plate at the other end is located in the inner side of the outer coupling unit;
two ends of a connecting beam of the third seesaw structure are provided with the first Z-axis capacitance plate, wherein the first Z-axis capacitance plate at one end is located in the accommodating groove formed by a recession of the other one of the two second side beam, and the first Z-axis capacitance plate at the other end is located in the inner side of the outer coupling unit;
a combined structure comprising the first seesaw structure and the first Z-axis capacitance plate arranged at two ends of the first seesaw structure and a combined structure comprising the third seesaw structure and the first Z-axis capacitance plate arranged at two ends of the third seesaw structure are central-symmetric with a geometric center of the outer coupling unit;
a torsion spring of the second seesaw structure and a torsion spring of the fourth seesaw structure are both arranged parallel to the second direction and staggered along the first direction;
two ends of a connecting beam of the second seesaw structure are provided with the first Z-axis capacitance plate, wherein the first Z-axis capacitance plate at one end is located in the accommodating groove formed by a recession of one of the two first side beams, and the first Z-axis capacitance plate at the other end is located in the inner side of the outer coupling unit;
two ends of a connecting beam of the fourth seesaw structure are provided with the first Z-axis capacitance plate, wherein the first Z-axis capacitance plate at one end is located in the accommodating groove formed by a recession of the other one of the two first side beams, and the first Z-axis capacitance plate at the other end is located at the inner side of the outer coupling unit;
a combined structure comprising the second seesaw structure and the first Z-axis capacitance plate arranged at two ends of the second seesaw structure and a combined structure comprising the fourth seesaw structure and the first Z-axis capacitance plates arranged at two ends of the fourth seesaw structure are central-symmetric with the geometric center of the outer coupling unit; and
the four first Z-axis capacitance plates located in the inner side of the outer coupling unit are sequentially arranged in a matrix.