阅读说明：本技术 流体传输致动器 (Fluid transfer actuator ) 是由 莫皓然 张钧俋 曾俊隆 陈世昌 廖家淯 黄启峰 韩永隆 古旸 吕依庭 于 2020-05-19 设计创作，主要内容包括：一种流体传输致动器,包含：一消音喷气孔片,包含一消音片、一悬浮片及一中空孔洞,悬浮片可弯曲振动,并于该悬浮片的中心具有该中空孔洞,该消音片套置固定于该悬浮片中心的该中空孔洞上；一腔体框架,承载叠置于该悬浮片上；一致动器,承载叠置于该腔体框架上,该致动器受施加电压而产生往复式地弯曲振动,并具有一压电薄板接脚；一绝缘框架,承载叠置于该致动器上；以及一导电框架,承载叠设置于该绝缘框架上,并具有一导电框架接脚。(A fluid transfer actuator, comprising: the silencing air injection hole piece comprises a silencing piece, a suspension piece and a hollow hole, wherein the suspension piece can be bent and vibrated, the hollow hole is formed in the center of the suspension piece, and the silencing piece is sleeved and fixed on the hollow hole in the center of the suspension piece; a cavity frame bearing and superposed on the suspension plate; an actuator bearing and superposed on the cavity frame, the actuator generating reciprocating bending vibration by applying voltage and having a piezoelectric sheet pin; an insulating frame bearing and overlapping the actuator; and a conductive frame, which is stacked on the insulating frame and has a conductive frame pin.)

1. A fluid transfer actuator, comprising:

the silencing air injection hole piece comprises a silencing piece, a suspension piece and a hollow hole, wherein the suspension piece can be bent and vibrated, the hollow hole is formed in the center of the suspension piece, and the silencing piece is sleeved and fixed on the hollow hole in the center of the suspension piece;

a cavity frame bearing and superposed on the suspension plate;

an actuator bearing and superposed on the cavity frame, the actuator generating reciprocating bending vibration by applying voltage and having a piezoelectric sheet pin;

an insulating frame bearing and overlapping the actuator; and

a conductive frame, which is stacked on the insulating frame and is provided with a conductive frame pin; wherein, a resonance chamber is formed among the actuator, the cavity frame and the silencing air injection hole sheet, the actuator drives the silencing air injection hole sheet to generate resonance, so that the suspension sheet of the silencing air injection hole sheet generates reciprocating vibration displacement, and fluid transmission is realized.

2. The fluid transfer actuator of claim 1, wherein the actuator comprises:

a piezoelectric sheet bearing and superposed on the cavity frame, the piezoelectric sheet pin being a protrusion of the piezoelectric sheet;

a piezoelectric thick plate bearing and superposed on the piezoelectric thin plate; and

and the piezoelectric sheet is loaded and superposed on the piezoelectric thick plate, and the piezoelectric sheet is applied with voltage to drive the piezoelectric thin plate and the piezoelectric thick plate to generate reciprocating bending vibration.

3. The fluid transfer actuator of claim 2, wherein the piezoelectric sheet and the piezoelectric slab are metals having two different coefficients of thermal expansion, two different degrees of deflection, two different degrees of rigidity, respectively, and are neither stainless steel.

4. The fluid transfer actuator of claim 3, wherein the piezoelectric sheet has at least a first side length and at least a second side length, the at least a first side length being the same length as the at least a second side length;

the piezoelectric thick plate is provided with at least one third side length and at least one fourth side length, and the length of the at least one third side length is the same as that of the at least one fourth side length;

the piezoelectric sheet has at least one fifth side length and at least one sixth side length, and the at least one fifth side length is the same as the at least one sixth side length.

5. The fluid transfer actuator of claim 4, wherein the at least one first side length is greater than the at least one third side length, the at least one first side length is greater than the plurality of fifth side lengths, and the at least one third side length is greater than or equal to the at least one fifth side length.

6. The fluid transfer actuator of claim 5, wherein a ratio of a length of the at least one fifth side to a length of the third side is between 1:1 and 1: 1.5.

7. The fluid transfer actuator of claim 5, wherein the length of the at least one first side and the length of the at least one second side are between 5.0 mm and 16.0 mm.

8. The fluid transfer actuator of claim 5, wherein the length of the at least one third side and the length of the at least one fourth side are between 3.5 mm and 9.5 mm.

9. The fluid transfer actuator of claim 5, wherein the length of the at least one fifth side and the length of the at least one sixth side are between 2.95 mm and 9.0 mm.

10. The fluid transfer actuator of claim 3, wherein the piezoelectric sheet has at least one piezoelectric sheet corner, and wherein the at least one piezoelectric sheet corner is rounded, and wherein the at least one rounded corner has an R-angle of less than 2.0mm, and wherein the piezoelectric sheet has at least one other piezoelectric sheet corner that is non-rounded.

11. The fluid transfer actuator of claim 3, wherein the piezoelectric slab has at least one piezoelectric slab corner, and wherein the at least one piezoelectric slab corner is rounded, and wherein the at least one rounded corner has an R-angle of less than 2.0 mm.

12. The fluid transport actuator of claim 11, wherein the piezoelectric slab has a piezoelectric slab thickness of 0.05 mm to 0.5 mm.

13. The fluid transfer actuator of claim 3, wherein the piezo sheet has four piezo sheet corners, and the piezo sheet corners are all right angles.

14. The fluid transport actuator of claim 13, wherein the piezoelectric sheet has a piezoelectric sheet thickness, the piezoelectric sheet thickness being between 0.05 mm and 0.2 mm.

Technical Field

The present disclosure relates to a fluid transmission actuator, and more particularly, to a fluid transmission actuator having different metal materials.

Background

In the prior art, the fluid transfer actuator is mainly formed by stacking conventional mechanism components, and each mechanism component is minimized or thinned to achieve the purpose of miniaturization and thinning of the whole device. However, after the conventional mechanism is miniaturized, the dimensional accuracy is difficult to control, and the assembly accuracy is also difficult to control, thereby causing problems of inconsistent product yield, unstable flow rate of fluid delivery, and the like. After the machine member is miniaturized, the fluid transmission actuator made of a single material is insufficient in structural toughness and is prone to be interfered and driving points are not clearly distinguished when the fluid transmission actuator is driven.

Furthermore, in the known fluid transfer actuators, the output fluid cannot be effectively collected, or the fluid propelling force is insufficient due to the small size of the components, thereby causing the problem of insufficient fluid delivery flow.

Disclosure of Invention

A primary object of the present disclosure is to provide a fluid transfer actuator, comprising: the silencing air injection hole piece comprises a silencing piece, a suspension piece and a hollow hole, wherein the suspension piece can be bent and vibrated, the hollow hole is formed in the center of the suspension piece, and the silencing piece is sleeved and fixed on the hollow hole in the center of the suspension piece; a cavity frame bearing and superposed on the suspension plate; an actuator bearing and superposed on the cavity frame, the actuator generating reciprocating bending vibration by applying voltage and having a piezoelectric sheet pin; an insulating frame bearing and overlapping the actuator; the conductive frame is arranged on the insulating frame in a bearing and stacking mode and is provided with a conductive frame pin; wherein, a resonance chamber is formed among the actuator, the cavity frame and the silencing air injection hole sheet, the actuator drives the silencing air injection hole sheet to generate resonance, so that the suspension sheet of the silencing air injection hole sheet generates reciprocating vibration displacement, and fluid transmission is realized.

Drawings

Fig. 1 is a first perspective exploded view of the fluid transfer actuator of the present disclosure.

Fig. 2 is a second exploded perspective view of the fluid transfer actuator of the present disclosure.

Fig. 3 is a schematic front view of the fluid transfer actuator of the present disclosure.

Fig. 4 is a reverse schematic view of the present fluid transfer actuator.

Fig. 5 is a schematic dimensional representation of the fluid transfer actuator of fig. 3.

Fig. 6 is a schematic diagram of a four corner plot of the fluid transfer actuator of fig. 3.

Fig. 7 is a schematic cross-sectional view of the fluid transfer actuator of fig. 6 taken along line a-a.

Fig. 8 is a thickness-indicating schematic view of the fluid transfer actuator of fig. 3.

Description of the reference numerals

21: fluid transfer actuator

211: silencing jet hole sheet

211 a: silencing sheet

211 b: suspension plate

211 c: hollow hole

212: cavity frame

213: actuator

213 a: piezoelectric thin plate

213 b: piezoelectric thick plate

213 c: piezoelectric patch

213 e: piezoelectric sheet pin

214: insulating frame

215: conductive frame

215 e: conductive frame pin

A-A: tangent line

L3 aWY: first side length

L3 bWY: the third side is long

L3 cWY: length of fifth side

L3 aXZ: length of second side

L3 bXZ: length of fourth side

L3 cXZ: the sixth side is long

L5 XZ: the eighth side is long

L5 WYA: the seventh side length

L5 WYB: the ninth side is long

M, N, O, P: angular orientation

R1M, R1N, R1O, R1P: suspension plate corner

R2M, R2N, R2O, R2P: cavity frame angle

R3aM, R3aN, R3aO, R3 aP: piezoelectric thin plate corner

R3bM, R3bN, R3bO, R3 bP: piezoelectric thick plate corner

R3cM, R3cN, R3cO, R3 cP: piezoelectric sheet corner

R4M, R4N, R4O, R4P: insulating frame corner

R5M, R5N, R5O, R5P: conductive frame corner

T3 a: thickness of piezoelectric sheet

T3 b: thickness of thick piezoelectric plate

T3 c: thickness of piezoelectric plate

W, X, Y, Z: edge orientation

Detailed Description

Embodiments that embody the features and advantages of this disclosure will be described in detail in the description that follows. It will be understood that the present disclosure is capable of various modifications without departing from the scope of the disclosure, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.

In all of the figures, the lower left direction has been indicated as being either angular (M, N, O, P) or angular (W, X, Y, Z) in order to define the orientation of the fluid transfer actuator so that the angle or edge can be precisely defined.

A fluid transfer actuator is provided, and reference is made to fig. 1 and 2. A fluid transfer actuator 21, comprising: a silencing air hole sheet 211, which comprises a silencing sheet 211a, a suspension sheet 211b and a hollow hole 211c, wherein the suspension sheet 211b can be bent and vibrated, the hollow hole 211c is arranged in the center of the suspension sheet 211b, and the silencing sheet 211a is sleeved and fixed on the hollow hole 211c in the center of the suspension sheet 211 b; a chamber frame 212, which is supported and stacked on the suspension plate 211 b; an actuator 213 stacked on the chamber frame 212, the actuator 213 generating a reciprocating bending vibration by applying a voltage and having a piezoelectric sheet pin 213 e; an insulating frame 214 carried and stacked on the actuator 213; and a conductive frame 215 stacked on the insulating frame 214 and having a conductive frame pin 215 e; a resonance chamber is formed among the actuator 213, the cavity frame 212 and the silencing jet hole piece 211, and the actuator 213 drives the silencing jet hole piece 211 to resonate, so that the suspension piece 211b of the silencing jet hole piece 211 generates reciprocating vibration displacement, and fluid transmission is realized. In the fluid transfer actuator 21 of the present embodiment, the actuator 213 includes: a piezoelectric sheet 213a stacked on the cavity frame 212, the piezoelectric sheet pin 213e is a protrusion of the piezoelectric sheet 213 a; a piezoelectric thick plate 213b stacked on the piezoelectric thin plate 213 a; and a piezoelectric sheet 213c stacked on the piezoelectric thick plate 213b, wherein the piezoelectric sheet 213c is applied with a voltage to drive the piezoelectric thin plate 213a and the piezoelectric thick plate 213b to generate a reciprocating bending vibration.

In the present embodiment, the fluid delivery actuator 21 includes a noise reduction orifice plate 211, a chamber frame 212, an actuator 213, an insulating frame 214, and a conductive frame 215, which are sequentially stacked. The muffling and air-ejecting hole piece 211 comprises a muffling piece 211a, a suspension piece 211b and a hollow hole 211 c. The suspension plate 211b has four suspension plate corners (R1M, R1N, R1O and R1P), the suspension plate 211b driven by electric power can vibrate in a bending manner, and a hollow hole 211c is formed in the center of the suspension plate 211 b. The silencing plate 211a is adjacent to the upper portion of the hollow hole 211c of the suspension plate 211 b. The cavity frame 212 has four cavity frame corners (R2M, R2N, R2O and R2P), and the cavity frame 212 is supported and overlapped on the suspension plate 211 b. The actuator 213 is stacked on the chamber frame 212, and the actuator 213 further includes a piezoelectric thin plate 213a, a piezoelectric thick plate 213b, and a piezoelectric sheet 213 c. The actuator 213 generates a reciprocating bending vibration by applying a voltage and has a piezoelectric sheet pin 213 e. The piezoelectric sheet pin 213e is a protrusion of the piezoelectric sheet 213a for receiving the input voltage. The piezoelectric sheet 213a is carried to overlap the chamber frame 212. The piezoelectric thick plate 213b is supported and stacked on the piezoelectric thin plate 213 a. The piezoelectric sheet 213c is supported and stacked on the piezoelectric slab 213 b. The piezoelectric sheet 213c deforms when a voltage is applied to drive the piezoelectric thin plate 213a and the piezoelectric thick plate 213b to perform reciprocating bending vibration. The insulating frame 214 has four insulating frame corners (R4M, R4N, R4O and R4P), and the insulating frame 214 is supported and stacked on the actuator 213, i.e., the insulating frame 214 is supported and stacked on the piezoelectric sheet 213a of the actuator 213. The conductive frame 215 is stacked on the insulating frame 214 and has a conductive frame pin 215 e. The conductive frame pin 215e is a protrusion of the conductive frame 215 for receiving the input voltage. A resonance chamber is formed among the actuator 213, the cavity frame 212 and the silencing jet hole piece 211, and the actuator 213 drives the silencing jet hole piece 211 to resonate, so that the suspension piece 211b of the silencing jet hole piece 211 generates reciprocating vibration displacement, and fluid transmission is realized.

In the fluid transmission actuator 21 of the present invention, the piezoelectric thin plate 213a and the piezoelectric thick plate 213b are made of metals having two different thermal expansion coefficients, two different flexibilities, and two different rigidities, respectively, and are not stainless steel.

It is noted that the piezoelectric thin plate 213a and the piezoelectric thick plate 213b have two different thermal expansion coefficients, and the actuator 213 made of metal materials with different thermal expansion coefficients can avoid two adjacent resonant frequencies, and avoid the situation that the adjacent resonant frequencies cause the misplacement of the driving frequency. At the same time, the impedance (resistance and reactance) of the actuator 213 is reduced, thereby achieving effective power driving to improve the operating efficiency of the actuator 213. Moreover, compared to the prior art in which the actuators are made of a single material (such as stainless steel), the micro blower actuator made of a single material is not strong enough and is easily interfered when being driven. In this embodiment, the material of one of the piezoelectric thin plate 213a or the piezoelectric thick plate 213b may be phosphor bronze, or the material of both the piezoelectric thin plate 213a and the piezoelectric thick plate 213b may be phosphor bronze, but the phosphor bronze has different chemical composition ratios. It is understood that the thermal expansion coefficient, flexibility and rigidity of the material are different according to different chemical composition ratios.

Please refer to fig. 3 and fig. 4, which are schematic combined views of fig. 1 and fig. 2, respectively. Please refer to fig. 5, which is a schematic diagram of the dimension indicators of fig. 3. In the fluid transmission actuator 21, the piezoelectric sheet 213a has at least one first side length L3aWY and at least one second side length L3aXZ, and the length of the at least one first side length L3aWY is the same as the length of the at least one second side length L3 aXZ; the piezoelectric slab 213b has at least one third length L3bWY and at least one fourth length L3bXZ, wherein the length of the at least one third length L3bWY is the same as the length of the at least one fourth length L3 bXZ; the piezoelectric sheet 213c has at least one fifth side length L3cWY and at least one sixth side length L3cXZ, and the at least one fifth side length L3cWY is the same as the at least one sixth side length L3 cXZ.

The piezoelectric sheet 213a has four sides, two first sides L3aWY and two second sides L3 aXZ. It is noted that the piezoelectric sheet 213a may be square, but not limited thereto, and in other embodiments, the piezoelectric sheet 213a may be circular, rectangular, or polygonal. The piezoelectric thick plate 213b has four side lengths, i.e., two third side lengths L3bWY and two fourth side lengths L3 bXZ. It is noted that the piezoelectric slab 213b can be square, but not limited thereto, and in other embodiments, the piezoelectric slab 213b can be circular, rectangular or polygonal. The piezoelectric sheet 213c has four sides, two fifth sides L3cWY and two sixth sides L3 cXZ. It is noted that the piezoelectric sheet 213c may be square, but not limited thereto, and in other embodiments, the piezoelectric sheet 213c may be ring-shaped, circular, rectangular, or polygonal. The conductive frame 215 without the projection (i.e., without the conductive frame pin 215e) has four sides, two ninth side lengths L5WYB and two eighth side lengths L5XZ, respectively. It is noted that the longest side of the conductive frame 215 having the protrusions is a seventh side length L5 WYA.

Please refer to fig. 6, which is a schematic diagram of the four corner marks of fig. 3. The fluid transmission actuator 21 of the present application, wherein the piezoelectric plate 213a has at least one piezoelectric plate corner (R3aN or R3aO or R3aP) that is rounded and the R corner of the at least one rounded corner is less than 2.0mm, and the piezoelectric plate 213a has at least one other piezoelectric plate corner (R3aM) that is not rounded. The fluid transmission actuator 21 of the present application, wherein the piezoelectric slab 213b has at least one piezoelectric slab corner (R3bM or R3bN or R3bO or R3bP) and is rounded, and the R corner of the at least one rounded corner is less than 2.0 mm. In the fluid transfer actuator 21, the piezoelectric sheet 213c has four piezoelectric sheet corners (R3cM, R3cN, R3cO, and R3cP), which are all right-angled.

The piezoelectric sheet 213c has four corners, namely, a piezoelectric sheet corner R3cM, a piezoelectric sheet corner R3cN, a piezoelectric sheet corner R3cO, and a piezoelectric sheet corner R3cP, which are all right-angled. It is noted that the four corners of the piezoelectric sheet 213c may be changed according to design requirements, such as changing some or all of the corners to right or oblique (single corner) or multiple corners. The piezoelectric slab 213b has four corners, namely, a piezoelectric slab corner R3bM, a piezoelectric slab corner R3bN, a piezoelectric slab corner R3bO, and a piezoelectric slab corner R3bP, which are rounded corners, and the rounded corner R is smaller than 2.0 mm. It is noted that the four corners of the piezoelectric slab 213b can be changed according to the design requirement, such as changing some or all of the corners to right or oblique (single corner) or polygon. The piezoelectric sheet 213a has four corners, which are a piezoelectric sheet corner R3aM, a piezoelectric sheet corner R3aN, a piezoelectric sheet corner R3aO, and a piezoelectric sheet corner R3 aP. It is noted that the piezoelectric sheet corner R3aM of the piezoelectric sheet 213a is a bevel, the piezoelectric sheet corners R3aN, R3aO and R3aP are rounded corners, and the rounded corner R is less than 2.0mm, and the four corners of the piezoelectric sheet 213a can be changed according to the design requirement, for example, part or all of the corners are changed into rounded corners or bevel corners (single corner) or polygon corners. Conductive frame 215 has four corners, conductive frame corner R5M, conductive frame corner R5N, conductive frame corner R5O, and conductive frame corner R5P. It is noted that the conductive frame corner R5M of the conductive frame 215 is a bevel, the conductive frame corners R5N, R5O and R5P are rounded corners, and the rounded corner R is less than 2.0mm, and the four corners of the conductive frame 215 can be changed according to design requirements, such as changing some or all corners into rounded corners or bevel corners (single corner) or multi-corner.

Please refer to fig. 7, which is a cross-sectional view of a line a-a in fig. 6. Fig. 8 is an exploded size view of the piezoelectric thin plate 213a, the piezoelectric thick plate 213b, and the piezoelectric sheet 213c of fig. 6. The fluid transmission actuator 21 in this case, wherein the length of the at least one first side length L3aWY is greater than the length of the at least one third side length L3bWY, the length of the at least one first side length L3aWY is greater than the length of the at least one fifth side length L3cWY, and the length of the at least one third side length L3bWY is greater than or equal to the length of the at least one fifth side length L3 cWY. In the fluid transfer actuator 21, a length of the at least one first side length L3aWY and a length of the at least one second side length L3aXZ are between 5.0 mm and 16.0 mm. In the fluid transmission actuator 21, a length of the at least one third side length L3bWY and a length of the at least one fourth side length L3bXZ are between 3.5 mm and 9.5 mm. In the fluid transfer actuator 21, a length of the at least one fifth side L3cWY and a length of the at least one sixth side L3cXZ are between 2.95 mm and 9.0 mm.

That is, the first side length L3aWY of the piezoelectric thin plate 213a is longer than the third side length L3bWY of the piezoelectric thick plate 213b by a length equal to or longer than the fifth side length L3cWY of the piezoelectric sheet 213 c. It is noted that, taking the present embodiment as an example, the length of the first side length L3aWY of the piezoelectric thin plate 213a is the same as the length of the second side length L3aXZ, the length of the third side length L3bWY of the piezoelectric thick plate 213b is the same as the length of the fourth side length L3bXZ, the length of the fifth side length L3cWY of the piezoelectric sheet 213c is the same as the length of the sixth side length L3cXZ, and the length of the ninth side length L5WYB of the conductive frame 215 is the same as the length of the eighth side length L5XZ, however, not limited thereto, in other embodiments, the length of the first side length L3aWY of the piezoelectric thin plate 213a may be different from the length of the second side length L3aXZ, the length of the third side length L3bWY of the piezoelectric thick plate 213b may be different from the length of the fourth side length L3bXZ, the length of the fifth side length L3cWY of the piezoelectric thin plate 213c may be different from the length of the sixth side length L3cXZ, and the length of the ninth side length L5WYB of the conductive frame 215 may be different from the length of the eighth side length L5 XZ. In the embodiment, the lengths of the third side length L3bWY and the fourth side length L3bXZ of the piezoelectric thick plate 213b are 8.40mm, the lengths of the first side length L3aWY and the second side length L3aXZ of the piezoelectric thin plate 213a are 12.80mm, and the length of the seventh side length L5WYA of the conductive frame 215 is 15.20mm, but not limited thereto, in other embodiments, the lengths of the first side length L3aWY, the second side length L3aXZ, the third side length L3bWY, the fourth side length L3bXZ, the fifth side length L3cWY, the sixth side length L3cXZ, the seventh side length L5WYA, the eighth side length L5XZ, and the ninth side length L5WYB may be adjusted according to design requirements.

In the fluid transmission actuator, a ratio of a length of the at least one fifth side L3cWY to a length of the third side L3bWY is 1:1 to 1: 1.5. That is, the length of the fifth side L3cWY of the piezoelectric sheet 213c is less than or equal to the length of the third side L3 bWY.

In the fluid transmission actuator of the present disclosure, the piezoelectric thick plate 213b has a piezoelectric thick plate thickness T3b, and the piezoelectric thick plate thickness T3b is 0.05-0.5 mm. In the fluid transmission actuator of the present application, the piezoelectric sheet 213a has a piezoelectric sheet thickness T3a, and the piezoelectric sheet thickness T3a is 0.05 mm to 0.2 mm. The thickness of the actuator 213 is a combination of a piezoelectric sheet thickness T3a of the piezoelectric sheet 213a, a piezoelectric slab thickness T3b of the piezoelectric slab 213b, and a piezoelectric sheet thickness T3c of the piezoelectric sheet 213 c. The thickness T3b of the thick piezoelectric plate is 0.05-0.5 mm, the thickness T3a of the thin piezoelectric plate is 0.05-0.2 mm, and the thickness T3b of the thick piezoelectric plate is thicker than the thickness T3a of the thin piezoelectric plate.

In summary, the fluid transmission actuator provided by the present invention achieves the effects of improving the impedance of the known single-material fluid transmission actuator during driving, avoiding the occurrence of misplacement of driving frequency due to the close-proximity resonance frequency, enhancing the structural toughness through the phosphor bronze material, and reducing the physical damage to the piezoelectric thin sheet through the fillet design of the piezoelectric thick sheet by the design of the piezoelectric thin sheet and the piezoelectric thick sheet made of the metal with different thermal expansion coefficients, different flexibility degrees and different rigidity.

Various modifications may be made by those skilled in the art without departing from the scope of the invention as defined by the appended claims.