Actuating and sensing module

Patent metadata

Field	Value
Publication number	US-11525439-B2
Application number	US-202117230058-A
Country	US
Kind code	B2
Filing date	Apr 14, 2021
Priority date	Apr 24, 2020
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

An actuating and sensing module is disclosed and includes a bottom plate, terminals, a control chip, a partition plate, a gas pressure sensor, a thin gas transportation device and a cover plate. The bottom plate includes terminal grooves, a recess, a gas outlet and a gas relief aperture. The terminals are disposed in the terminal grooves. The control chip is disposed in the recess. The partition plate is stacked on the bottom plate and includes an outlet opening in communication with the gas outlet and a pressure relief orifice corresponding to the gas relief aperture. The thin gas transportation device seals the gas outlet and the pressure relief orifice. The cover plate includes an opening passed through by the thin gas transportation device. The gas is transported to the outlet opening by the thin gas transportation device and sensed by the gas pressure sensor disposed in the outlet opening.

First claim

What is claimed is:

1. An actuating and sensing module comprising:
a bottom plate comprising at least one terminal groove, a recess, a gas outlet and a gas relief aperture;
at least one terminal disposed in the at least one terminal groove;
a control chip disposed in the recess;
a partition plate stacked on the bottom plate and comprising an outlet opening and a pressure relief orifice, wherein the outlet opening is in fluid communication with the gas outlet, and the pressure relief orifice is corresponding to the gas relief aperture;
a gas pressure sensor accommodated in the outlet opening;
a thin gas transportation device disposed on the partition plate and sealing the gas outlet and the pressure relief orifice; and
a cover plate disposed on the partition plate and comprising an opening, wherein the thin gas transportation device passes through the opening;
wherein a gas is transported to the outlet opening by the thin gas transportation device, and a change of pressure and flow rate of the gas is sensed by the gas pressure sensor disposed in the outlet opening.

2. The actuating and sensing module according to claim 1 , wherein the gas pressure sensor is located above the control chip.

3. The actuating and sensing module according to claim 1 , wherein the gas outlet is in fluid communication with a positive pressure load.

4. The actuating and sensing module according to claim 3 , wherein the positive pressure load is an air bag.

5. The actuating and sensing module according to claim 3 , wherein the positive pressure load is a gas cylinder.

6. The actuating and sensing module according to claim 1 , wherein the thin gas transportation device is in fluid communication with a negative pressure load.

7. The actuating and sensing module according to claim 6 , wherein the negative pressure load is an air bag.

8. The actuating and sensing module according to claim 6 , wherein the negative pressure load is a gas cylinder.

9. The actuating and sensing module according to claim 1 , wherein the thin gas transportation device comprises:
a thin gas pump comprising:
an inlet plate comprising a first surface, a second surface opposed to the first surface, a plurality of inlet apertures, a plurality of intake channels and a convergence chamber, wherein each one of the plurality of inlet apertures penetrates from the first surface to the second surface, and the convergence chamber is recessed from the second surface and located at a center of the second surface, wherein each of the plurality of intake channels is recessed from the second surface and comprises a first end in fluid communication with the corresponding inlet aperture and a second end in fluid communication with the convergence chamber;
a resonance plate connected to the second surface and comprising a central aperture, a vibration part and a fixed part, wherein the central aperture is located at a center position of the resonance plate, the vibration part surrounds the central aperture and corresponds to the convergence chamber, and the fixed part surrounds the vibration part, wherein the resonance plate is connected to the inlet plate through the fixed part;
an actuation element connected to the fixed part of the resonance plate;
a first insulation frame connected to the actuation element;
a conducting frame connected to the first insulation frame; and
a second insulation frame connected to the conducting frame; and

a thin valve structure connected to the second insulation frame and comprising:
a first thin plate comprising a hollowed region;
a valve frame comprising a valve-plate-accommodation region;
a valve plate disposed in the valve-plate-accommodation region and comprising a valve aperture, wherein the valve aperture is misaligned with the hollowed region; and
a second thin plate comprising an outgassing surface, a pressure relief surface opposed to the outgassing surface, an outlet groove, an outlet aperture, a pressure relief aperture and a pressure relief groove, wherein the outlet groove is recessed from the outgassing surface and partially misaligned with the hollowed region of the first thin plate, the outlet aperture is hollowed out from the outlet groove toward the pressure relief surface and is corresponding to the valve aperture, the pressure relief aperture is spaced apart from the outlet groove, and the pressure relief groove is recessed from the pressure relief surface and in fluid communication with the pressure relief aperture;

wherein the first thin plate, the valve plate and the second thin plate are stacked and fixed sequentially.

10. The actuating and sensing module according to claim 9 , wherein the actuation element comprises:
a vibration plate being a square structure;
an outer frame arranged around the vibration plate;
a plurality of connection parts connected between the vibration plate and the outer frame, respectively, for elastically supporting the vibration plate; and
a piezoelectric plate with a shape and an area corresponding to the vibration plate and attached to the vibration plate.

11. The actuating and sensing module according to claim 9 , wherein the outlet aperture has a diameter greater than a diameter of the valve aperture.

12. The actuating and sensing module according to claim 9 , wherein the first thin plate, the valve frame and the second thin plate are made of a metal material.

13. The actuating and sensing module according to claim 12 , wherein the metal material is a stainless steel material.

14. The actuating and sensing module according to claim 9 , wherein the hollowed region and the outlet groove have an identical shape.

15. The actuating and sensing module according to claim 9 , wherein the actuating and sensing module has a length less than 20 mm, a width less than 18 mm, and a thickness less than 5 mm.

Assignees

• Microjet Technology Co Ltd

Inventors

• Mou Hao-Jan
• Chen Shih-Chang
• Liao jia-yu
• Liao Hung-Hsin
• Kao Chung-Wei
• Huang Chi-Feng
• Han Yung-Lung
• Tsai Chang-Yen
• Ku Yang

Classifications

• G01F1/383

  with electrical or electro-mechanical indication · CPC title

• F16K7/00

  Diaphragm {valves or} cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage (container gates or closures operating by deformation of flexible walls B65D90/56; means for plugging pipes or hoses F16L55/10 ){; Pinch valves} · CPC title

• G01F1/34

  by measuring pressure or differential pressure · CPC title

• F04B43/046 Primary

  with piezoelectric drive · CPC title

• F04B49/03

  by means of valves · CPC title