一种静电测试仪

Abstract

本实用新型涉及静电测试装置技术领域，公开了一种静电测试仪，包括：法兰片、电路板和马达组件沿第一方向依次间隔设置在壳体内；电路板的中心开设有沿第一方向贯穿的电路板孔；法兰片靠近电路板的一侧中心连接有沿第一方向延伸的凸台，凸台穿过电路板孔；壳体上设有两个螺母件，螺母件上设有沿第一方向贯穿的第一螺纹孔；马达组件上设有两个沿第一方向贯穿的第二螺纹孔，两个第二螺纹孔以马达组件的轴线对称，第二螺纹孔通过螺栓连接对应的第一螺纹孔；输出轴组件沿第一方向延伸，输出轴组件的两端分别连接凸台的中心和马达组件的中心。本实用新型提供了一种静电测试仪，有利于避免法兰片偏心旋转，提升静电测试结果的准确性。

Claims

1. An electrostatic tester characterized by, include: The housing, flange, circuit board, motor assembly, and output shaft assembly are arranged sequentially and spaced apart within the housing along a first direction; The circuit board has a through hole in the center, which extends in the first direction; The flange has a boss extending in a first direction at its center on the side closest to the circuit board, and the boss passes through a hole in the circuit board. The housing is provided with two nuts, which are respectively disposed on the inner sidewalls of the housing opposite each other in the second direction. The nuts are provided with a first threaded hole that passes through in the first direction. The motor assembly is provided with two second threaded holes that pass through in a first direction. The two second threaded holes are symmetrical about the axis of the motor assembly. The second threaded holes are connected to the corresponding first threaded holes by bolts. The output shaft assembly extends along a first direction, and the two ends of the output shaft assembly are respectively connected to the center of the boss and the center of the motor assembly; Wherein, the first direction and the second direction are perpendicular to each other.

2. The electrostatic tester of claim 1, wherein, A mounting post extending in a first direction is connected to the center of the side of the boss away from the flange. The output shaft assembly includes: A connecting block has a first connecting hole at one end near the circuit board and a second connecting hole at one end near the motor assembly. The first connecting hole and the second connecting hole are coaxial in a first direction, and the mounting post is inserted into the first connecting hole. A connecting post, the first end of which is inserted into the second connecting hole, and the second end of which is connected to the center of the motor assembly.

3. The electrostatic tester of claim 2, wherein, The mounting post is threadedly connected to the first connecting hole, and the connecting post is threadedly connected to the second connecting hole.

4. The electrostatic tester of claim 2, wherein, The motor assembly has a motor hole extending through a first direction at its center. An insulating ring is provided inside the motor hole, and the outer side of the insulating ring is attached to the wall of the motor hole. The second end of the connecting post is inserted into the motor hole and fitted inside the insulating ring.

5. The electrostatic tester of claim 4, wherein, The motor assembly includes: The motor body has a through hole extending in a first direction at its center; The mounting plate is coaxially disposed on the side of the motor body near the circuit board. The mounting plate is provided with the two second threaded holes, and the center of the mounting plate is provided with a mounting hole that extends along a first direction. The mounting hole connects with the body hole to form the motor hole.

6. The electrostatic tester of claim 4, wherein, Also includes: The fastener is made of non-metallic material and is disposed inside the housing. The fastener is located on the side of the motor assembly away from the circuit board. The fastener has a fixing hole that extends through the motor in a first direction. A metal elastic element is disposed in the fixing hole, the metal elastic element extends along a first direction, and the first end of the metal elastic element is connected to the connecting post; A metal screw, one end of which is inserted into the fixing hole and abuts against the second end of the metal elastic element; A first grounding wire, the first end of which is connected to the metal screw, and the second end of which is grounded; The second grounding wire has its first end connected to the bolt, which is made of metal, and its second end grounded.

7. The electrostatic tester of claim 6, wherein, The end of the metal screw away from its screw head is inserted into the fixing hole from the side of the fixing hole away from the motor hole and abuts against the second end of the metal elastic member. The first end of the first grounding wire is pressed between the screw head of the metal screw and the outer wall of the fixing member.

8. The electrostatic tester of claim 2, wherein, Also includes: An assembly tool, comprising a gripping part, a fitting part, and a connecting part connected sequentially along a first direction, wherein the fitting part and the connecting part are coaxial, the connecting part matches the first connecting hole, and the fitting part matches the circuit board hole.

9. The electrostatic tester of claim 1, wherein, The housing has a first positioning hole extending through the circuit board in the first direction on the side of the housing near the circuit board, and the circuit board has a second positioning hole extending through the first direction. The electrostatic tester also includes: A positioning post is inserted into the first positioning hole and the second positioning hole.

10. The electrostatic tester of claim 1, wherein, The housing has a first opening on one side in the first direction, which extends through the first direction and extends upward to the top of the housing; The electrostatic tester also includes: The cover body has its bottom connected to the top of the housing. The cover body has a second opening on one side in a first direction, which extends downward to the bottom of the cover body. The second opening connects to the first opening to form a limiting hole, and the flange is located in the limiting hole.

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