CN213711288U - Micro fluid pump and pressure fluid application equipment - Google Patents

Abstract

Disclosed are a micro fluid pump and a pressure fluid application apparatus, the micro fluid pump including: a motor having a motor shaft extending along an axis; a main housing connected to the motor and defining an accommodating space; a diaphragm body mount coupled to the main housing, the diaphragm body mount having a diaphragm body with a plurality of diaphragm units disposed thereon; a crank drive assembly that receives torque from the motor for rotation and is coupled to the diaphragm body for driving the reciprocating compression and pumping motion of the diaphragm unit; the diaphragm body mounting seat is provided with a plurality of mounting concave parts corresponding to the diaphragm units respectively, the diaphragm units are supported on the mounting concave parts, and the mounting concave parts comprise bowl-shaped supporting parts and mounting holes arranged at the bottoms of the bowl-shaped supporting parts; the bowl-shaped supporting part comprises a first surface facing the diaphragm unit and a second surface opposite to the first surface; a material cut-out is formed on the second surface of the bowl-shaped support along the periphery of the mounting hole.

Description

Micro fluid pump and pressure fluid application equipment

Technical Field

The utility model relates to a fluid pump field, more specifically relate to a miniature fluid pump and pressure fluid application apparatus.

Background

With the widespread use of fluid pumps in both residential and commercial applications, increased demands have been placed on fluid pumps, particularly micro-fluid pumps.

Current micro fluid pumps (e.g., micro water pumps) generally include a motor, a main housing, a water bag mount, a water bag body having a plurality of water bag units, and a knee lever transmission assembly, wherein the water bag body is mounted on the water bag mount, and the water bag mount is provided with an avoiding portion to avoid an outer surface of a bag cavity of the water bag unit. In an operating state, the crank transmission assembly receives torque transmitted by the motor to rotate and drives the water bag unit on the water bag mounting seat to perform reciprocating compression and suction motions, so that fluid with preset pressure is output. However, on one hand, since the water bag unit is elastically deformed under high pressure, the volume of the water bag unit is increased, so that the pressure inside the water bag unit is reduced, the pressure of finally output fluid is influenced, and the performance and the output stability of the micro fluid pump are influenced; on the other hand, when the water bag unit has high pressure inside, the water bag unit generates large reverse pressure on the curved rod transmission assembly, the service life of the curved rod transmission assembly is damaged, and meanwhile, the performance of the micro fluid pump is also affected.

Therefore, there is a need for a micro fluid pump capable of outputting high pressure fluid, which has good performance and stability, and which has a long service life.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a miniature fluid pump and pressure fluid application apparatus. Utilize the utility model provides a miniature fluid pump and pressure fluid application apparatus can improve the performance of this fluid pump and stability effectively on the basis of exporting high-pressure fluid well, and this miniature fluid pump has longer life.

According to an aspect of the present invention, a micro fluid pump is provided, including: a motor having a motor shaft extending along an axis; a main housing connected to the motor and defining an accommodating space; a diaphragm body mount coupled to the main housing, the diaphragm body mount having a diaphragm body with a plurality of diaphragm units disposed thereon; a crankshaft drive assembly that receives torque from the motor for rotation and is coupled to the diaphragm body to drive reciprocating compression and suction motions of the diaphragm unit; the diaphragm body mounting seat is provided with a plurality of mounting concave parts corresponding to the diaphragm units respectively, the diaphragm units are supported on the mounting concave parts, and the mounting concave parts comprise bowl-shaped supporting parts and mounting holes arranged at the bottoms of the bowl-shaped supporting parts; and wherein the bowl-shaped support comprises a first surface facing the diaphragm unit and a second surface opposite to the first surface; a material cut-out is formed on the second surface of the bowl-shaped support along the periphery of the mounting hole.

The microfluidic pump according to the present invention may further comprise one or more of the following features, alone or in combination.

In some embodiments, the material cut forms a chamfer that gradually increases in a vertical direction away from the diaphragm unit.

In some embodiments, the chamfer is a conical surface.

In some embodiments, the diaphragm unit includes a capsule cavity opened above and having a bowl shape, and a mounting post at a bottom of the capsule cavity, the mounting post passing through the mounting hole, and the capsule cavity being supported on the bowl-shaped support.

In some embodiments, the capsule cavity includes an arcuate thin-walled portion and a thickened bottom portion at which the mounting post is disposed, the bowl-like support supporting at least a portion of the arcuate thin-walled portion.

In some embodiments, the bowl support supports the arcuate thin wall portion.

In some embodiments, the diaphragm body mount is made of plastic, and the diaphragm body is made of rubber.

In some embodiments, the plurality of diaphragm units is three diaphragm units and the plurality of mounting holes is three mounting holes.

In some embodiments, the plurality of diaphragm units is four diaphragm units and the plurality of mounting holes is four mounting holes.

In some embodiments, the micro fluid pump further comprises: a valve seat sealingly coupled to a diaphragm body mount, the diaphragm body at least partially sandwiched between the diaphragm body mount and the valve seat; and wherein the diaphragm body mount is further provided with a plurality of first flanges respectively surrounding the mounting recesses and extending toward the valve seat, the valve seat being provided with a plurality of second flanges extending toward the diaphragm body mount at positions corresponding to the plurality of first flanges, the diaphragm unit being sandwiched between the respective first and second flanges.

According to another aspect of the present invention, a pressurized fluid application device is provided, comprising a micro fluid pump as described above.

The pressure fluid application device according to the present invention may further comprise one or more of the following features, alone or in combination.

In some embodiments, the device is a coffee maker.

In some embodiments, the coffee maker is an espresso maker.

In some embodiments, the device is a dental prophylaxis device.

The following description of the preferred embodiments for carrying out the present invention will be made in detail with reference to the accompanying drawings so that the features and advantages of the present invention can be easily understood.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts. The following drawings are not intended to be drawn to scale in actual size, with emphasis on illustrating the principles of the invention.

Fig. 1 shows an exploded view of a micro fluid pump 100 according to an embodiment of the present invention;

fig. 2A shows a perspective view of a micro fluid pump 100 according to an embodiment of the present invention;

fig. 2B illustrates a cross-sectional view of the micro fluid pump 100 according to an embodiment of the present invention;

FIG. 3 illustrates a perspective view of a diaphragm body 160 according to an embodiment of the present invention;

FIG. 4 illustrates a partial view of a diaphragm body mount 130 according to an embodiment of the present invention;

FIG. 5A illustrates a partial cross-sectional view of a diaphragm body 160 and a diaphragm body mount 130 according to an embodiment of the present invention;

fig. 5B shows a partial cross-sectional view of the bowl-shaped support portion 132 of the mounting recess according to an embodiment of the invention;

fig. 6 shows a perspective view of a valve seat 140 according to an embodiment of the invention.

Detailed Description

In order to make the technical solution of the present invention, its purpose, technical solution and advantages become clearer, the drawings of the embodiments of the present invention will be combined hereinafter, and the technical solution of the embodiments of the present invention will be clearly and completely described. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Current micro fluid pumps (e.g., micro water pumps) generally include a motor, a main housing, a water bag mount, a water bag body having a plurality of water bag units, and a knee lever transmission assembly, wherein the water bag body is mounted on the water bag mount, and the water bag mount is provided with an avoiding portion to avoid an outer surface of a bag cavity of the water bag unit. The outer surface of the bag cavity is the surface of the bag cavity of the water bag unit facing the water bag seat. In an operating state, the crank transmission assembly receives torque transmitted by the motor to rotate and drives the water bag unit on the water bag mounting seat to perform reciprocating compression and suction motions, so that fluid with preset pressure is output.

However, on one hand, the water bag unit is elastically deformed under high pressure, and the volume of the water bag unit is increased, so that the pressure inside the water bag unit is reduced, the pressure of finally output fluid is influenced, and the performance and the output stability of the micro fluid pump are influenced; on the other hand, when the water bag unit has high pressure inside, the water bag unit will generate large reverse pressure to the curved bar transmission assembly, which damages the service life of the curved bar transmission assembly and also affects the performance of the micro fluid pump.

Based on the foregoing, the utility model discloses in provide a fluid pump and pressure fluid application apparatus for on exporting high-pressure fluid's basis well, improve this fluid pump's performance and stability effectively, and this miniature fluid pump has longer life.

According to an aspect of the present invention, a micro fluid pump is provided. Fig. 1 shows an exploded view of a micro fluid pump 100 according to an embodiment of the present invention.

Referring to fig. 1, the micro fluid pump 100 includes, for example, a motor 110, a main housing 120, a diaphragm body mount 130, and a crank drive assembly 170.

The motor 110 has a motor shaft extending along an axis, which is a rotation axis of the motor. The embodiment of the utility model is not limited by the rotational speed of this motor and its motor type.

The main housing 120 is connected to the motor 110 and defines an accommodating space, which is a space for accommodating internal components of the main housing, such as a crank gear assembly. The embodiment of the utility model discloses a do not receive the restriction of this accommodation space's concrete structure and position.

Fig. 2A shows a perspective view of a micro fluid pump 100 according to an embodiment of the present invention, and fig. 2B shows a cross-sectional view of the micro fluid pump 100 according to an embodiment of the present invention.

Referring to fig. 2A and 2B, the diaphragm mount 130 is coupled to the main housing 120. The diaphragm body mount 130 is coupled to the main housing 120, for example, via a snap fit, or it may be otherwise coupled to the main housing. Embodiments of the present invention are not limited by the connection between the diaphragm body mount 130 and the main housing 120.

With continued reference to FIG. 1, the diaphragm body mount 130 is provided with a diaphragm body 160 having a plurality of diaphragm elements 161 (diaphragm elements 161 are shown in FIG. 3). For example, the diaphragm body 160 may be, for example, a plurality of integrally formed water bladders (e.g., upper openings), wherein each water bladder is a diaphragm unit.

A bell crank drive assembly 170 receives torque from the motor 110 for rotation and is coupled to the diaphragm body 160 to drive the reciprocating compression and pumping motion of the diaphragm unit. The crank transmission assembly 170 may be disposed inside the main housing, i.e. in the accommodating space.

For example, the knee lever transmission assembly 170 may further include: an eccentric 171 provided with an eccentric hole, an eccentric shaft 172 inserted in the eccentric hole of the eccentric wheel (the eccentric shaft is disposed at an angle to the output shaft of the motor), and a crank bracket assembly 173 connected to the eccentric shaft, so that it can receive torque from the motor through the eccentric wheel and realize rotation based on the torque, and make the crank bracket assembly perform a repetitive extrusion swing motion based on the rotation of the eccentric wheel. However, it should be understood that the crank drive assembly may also include other components or have other compositions, such as a gear drive assembly 174, for example, to transfer the torque of the motor to the eccentric, depending on the actual requirements. As long as this knee lever drive assembly can be based on the torque drive that is received from the motor the diaphragm unit reciprocating compression and suction motion can, the embodiments of the present invention are not limited by the specific composition of this knee lever drive assembly.

The reciprocating compression and suction motion is that the diaphragm units in the diaphragm body are alternately in a compression state and a stretching state. For example, if the diaphragm body is a water bag body including a plurality of water bag units, when the knee lever bracket assembly moves downwards and pulls down the water bag units, the water bag units are in a pumping movement process, the air pressure in the water bag units is reduced, and fluid enters the water bag units; on the contrary, when the knee lever bracket assembly moves upwards and presses the water sac unit, the water sac unit is in the compression movement process, the air pressure in the water sac unit rises, and therefore the fluid with high pressure is output.

Fig. 3 shows a perspective view of a diaphragm body 160 according to an embodiment of the present invention, wherein a diaphragm body unit 161 is shown. Fig. 4 illustrates a partial view of a diaphragm body mount 130 according to an embodiment of the present invention. Referring to fig. 3 and 4, the diaphragm body mounting seat 130 is provided with a plurality of mounting recesses 131 corresponding to the plurality of diaphragm units 161 of the diaphragm body 160. The mounting recess 131 is a portion of the diaphragm body mount for contacting the diaphragm unit to effect assembly of the diaphragm body to the diaphragm body mount.

Fig. 5A illustrates a partial cross-sectional view of a diaphragm body 160 and a diaphragm body mount 130 according to an embodiment of the present invention. Referring to fig. 4 and 5A, the diaphragm unit 161 of the diaphragm body 160 is supported by the mounting recess 131 of the diaphragm body mounting seat 130, and the mounting recess 131 includes a bowl-shaped support portion 132 and a mounting hole 133 provided at the bottom of the bowl-shaped support portion 132. The bowl-shaped support 132 is a support section having a bowl-shaped arc surface in the mounting recess 131.

For example, the mounting hole may have a circular shape, for example, or may also have an elliptical shape. The diameter of the mounting hole can be set according to actual needs, for example.

Fig. 5B shows a partial cross-sectional view of the bowl-shaped support portion 132 of the mounting recess according to an embodiment of the invention. Referring to fig. 5B, the bowl support 132 includes a first surface 1321 facing the diaphragm unit and a second surface 1322 opposite to the first surface 1321; a material cut-away portion 1323 is formed on the second surface 1322 of the bowl support 132 along the periphery of the mounting hole 133.

It should be understood that the first surface and the second surface are intended to distinguish different surfaces of the bowl-shaped support facing the diaphragm unit and facing away from the diaphragm unit, which is not intended to be limiting.

The material cut-out is intended to characterize the structure formed after the material has been partially cut out in the second surface of the bowl-shaped support. It will be appreciated that the material cut-out may for example have the shape of an inverted bevel, or it may have other shapes, depending on the actual requirements. Embodiments of the present invention are not limited by the particular shape of the material cut-out and the manner in which it is formed.

It should be understood that, according to actual needs, the micro fluid pump 100 may further include, for example, a valve seat 140, an upper cover 150 or other components, and as shown in fig. 2A and 2B, the upper cover 150, the valve seat 140, the diaphragm body mounting seat 130, the main housing 120 and the motor 110 are hermetically mounted in sequence, for example, from top to bottom.

Based on the above, the utility model discloses in, the installation concave part through setting up this diaphragm body mount pad has bowl form supporting part and sets up the mounting hole in bowl form supporting part bottom, compare in setting up the technical scheme of dodging the portion in order to dodge the cyst of diaphragm unit surface in the diaphragm body mount pad, in through setting up bowl form supporting part for when miniature fluid pump is in operating condition, prevent that the diaphragm unit of the diaphragm body from appearing the elasticity expansion and arousing the problem that diaphragm unit internal pressure reduces because there is high pressure inside, thereby can improve the pressure that miniature fluid pump output fluid has effectively, improved the working property of this miniature water pump, also be favorable to improving the output stability of this miniature fluid pump, make this miniature fluid pump can continuously stabilize the fluid of output high pressure (for example 10 bar pressure). Simultaneously, through setting up bowl form supporting part, when operating condition, this bowl form supporting part can bear the backpressure who comes from diaphragm unit (its inside has the high pressure) to reduce high-pressure diaphragm unit effectively and to the backpressure of curved bar bracket component, improved the atress condition of curved bar bracket component, also improved miniature fluid pump's life. Furthermore, through the material cutting part formed on the second surface of the bowl-shaped supporting part along the periphery of the mounting hole, the good support of the diaphragm unit can be realized, and meanwhile, in the working process of the micro fluid pump, the bowl-shaped supporting part can effectively avoid structures such as a mounting column and a curved rod transmission assembly at the bottom of the diaphragm unit, so that when the micro fluid pump is in a working state, the diaphragm unit can flexibly perform reciprocating compression and suction movement, and the output stability of the micro fluid pump is further improved.

In some embodiments, referring to fig. 5B, the material cutout 1323 forms a chamfer that gradually increases in a vertical direction away from the diaphragm cell. Wherein the vertical direction is intended to represent a direction perpendicular to the plane of the diaphragm body mount.

Through setting up this material excision portion for deviating from this diaphragm unit gradual increase's chamfer along vertical direction, make along with the increase of the distance with this diaphragm unit, the material that this bowl form supporting part was excised increases, thereby make on having taken into account the basis of this diaphragm unit's good support, when this miniature fluid pump is operating condition, be in reciprocating compression and suction motion period promptly when this diaphragm unit, can dodge the erection column isotructure of diaphragm unit bottom through this material excision portion, thereby make the motion of diaphragm unit can be more nimble.

In some embodiments, the chamfer is a conical surface. Through setting up this chamfer for the conical surface, be favorable to simplifying manufacturing process on the one hand, on the other hand also can better realize the function of dodging of above-mentioned this material excision portion.

In some embodiments, referring to fig. 5A, the diaphragm unit 161 includes a bladder cavity 1611 and a mounting post 1612 at the bottom of the bladder cavity, the bladder cavity 1611 is open above and bowl-shaped, the mounting post 1612 passes through the mounting hole 133, and the bladder cavity 1611 is supported on the bowl-shaped support 132.

The capsule cavity is a section of the diaphragm unit for containing fluid, and the mounting column is a section of the diaphragm unit for realizing assembly with the diaphragm body mounting seat. The mounting post may be cylindrical or prismatic, for example, and embodiments of the present invention are not limited by the specific shape of the mounting post.

The capsule cavity may be made of an elastic material, for example rubber, or it may be made of other materials. The embodiment of the utility model is not limited by the specific material of the capsule cavity.

The capsule chamber may be supported, for example, only partially on the bowl-shaped support, or the capsule chamber may be supported entirely on the bowl-shaped support. The embodiment of the utility model is not limited by the specific joint area and the joint area of the capsule cavity and the bowl-shaped supporting part.

Based on the above, through setting up this diaphragm unit including the sack cavity that is the bowl form and the erection column that is located sack cavity bottom for the bowl form supporting part of installation concave part can with the good adaptation of corresponding diaphragm unit's sack cavity in the diaphragm body mount pad, thereby realize the support to this diaphragm unit's sack cavity better, and be favorable to further improving miniature pump's high-pressure output performance and stability.

With further reference to fig. 5A, in some embodiments, the capsule cavity 1611 of the diaphragm unit 161 includes an arcuate thin-walled portion 1611A and a thickened bottom portion 1611B, the mounting post 1612 is disposed at the thickened bottom portion 1611B, and the bowl-like support 132 supports at least a portion of the arcuate thin-walled portion 1611A.

The bodiness bottom is the district's section that thickness is greater than this arc thin wall portion in the diaphragm unit bag cavity, the embodiment of the utility model discloses a do not receive the restriction of the concrete thickness value that this bodiness bottom adopted.

The bowl support 132 may be described in greater detail as supporting at least a portion of the curved wall 1611A. For example, the bowl-shaped support portion 132 supports only half of the arc-shaped thin wall portion 1611A, or a section of a quarter of the arc-shaped thin wall portion, for example. Alternatively, the bowl-shaped support portion 132 may support the entire arc-shaped thin wall portion 1611A.

Based on the above, on the one hand, including arc thin wall portion and bodiness bottom through the bag cavity that sets up this diaphragm unit for the part that this bag cavity is connected with the erection column has better resistance to compression and tensile strength, is favorable to improving diaphragm unit self life and intensity, and is favorable to preventing this bag cavity by wearing and tearing effectively at the diaphragm unit in-process that carries out reciprocal compression and suction motion. On the other hand, at least one part of the arc-shaped thin wall part is supported by the bowl-shaped supporting part, so that the elastic expansion of the capsule cavity under high pressure can be effectively prevented, the reverse pressure of the capsule cavity under high pressure is borne, the stress condition of the curved rod transmission assembly is improved, and the output of high-pressure fluid is ensured.

In some embodiments, the bowl support supports the arcuate thin wall portion. The arc-shaped thin-wall part is supported by the bowl-shaped supporting part, so that elastic expansion of all sections of the arc-shaped thin-wall part of the bag cavity under high pressure can be better prevented, the reverse pressure of the bag cavity under high pressure can be better borne, the stress condition of the curved rod transmission assembly is improved, and high-pressure fluid can be continuously and stably output.

In some embodiments, the diaphragm body mount is made of plastic, and the diaphragm body is made of rubber. Through setting up this diaphragm body mount pad and this diaphragm body and be plastic and rubber material respectively for the diaphragm body mount pad that the rigid material that has great intensity and rigidity made can well bear the diaphragm body that has less intensity and rigidity, thereby realizes the good joint between the two. And the diaphragm body can be alternately in a compression state and a stretching state in the process of reciprocating compression and suction movement by adopting the elastic rubber material, so that the suction of the fluid and the output of the high-pressure fluid are well realized.

In some embodiments, the plurality of diaphragm units is three diaphragm units and the plurality of mounting holes is three mounting holes. By arranging the three diaphragm units, the high-pressure fluid output of the micro fluid pump can be better realized, and the performance of the micro fluid pump is improved.

In some embodiments, referring to fig. 1, the plurality of diaphragm units is four diaphragm units and the plurality of mounting holes is four mounting holes. The four diaphragm units are arranged, so that high-pressure fluid output of the micro fluid pump can be better realized, and the performance of the micro fluid pump is improved.

In some embodiments, referring to fig. 1, the micro fluid pump further comprises a valve seat 140. The valve seat 140 is sealingly coupled to the diaphragm body mount 130, and the diaphragm body 160 is at least partially sandwiched between the diaphragm body mount 130 and the valve seat 140.

Fig. 6 shows a perspective view of a valve seat 140 according to an embodiment of the invention. Referring to fig. 4 and 6, the diaphragm body mount 130 is further provided with a plurality of first flanges 134 respectively surrounding the mounting recesses 131 and extending toward the valve seat, the valve seat 140 is provided with a plurality of second flanges 144 extending toward the diaphragm body mount 130 at positions corresponding to the plurality of first flanges 134, and the diaphragm units are sandwiched between the respective first and second flanges 134 and 144.

For example, the diaphragm body mount and the valve seat may both be made of a rigid material, e.g. a plastic material, and the diaphragm body may for example be made of a rubber material, so that a less rigid rubber material can be well clamped in the diaphragm body mount and the valve seat having a higher stiffness and rigidity.

For example, the first and second flanges may have a circular shape, or they may have an elliptical shape. It should be understood that embodiments of the present invention are not limited by the specific configurations of the first flange and the second flange.

Based on the above, by providing the diaphragm body mount with the plurality of first flanges that respectively surround the mounting recesses and extend toward the valve seat, and providing the valve seat with the plurality of second flanges that extend toward the diaphragm body mount at positions corresponding to the plurality of first flanges, it is possible to sandwich the diaphragm unit between the corresponding first flanges and second flanges, thereby enabling a hard-to-soft seal structure to be achieved, and achieving good sealing between the valve seat, the diaphragm body, and the diaphragm body mount.

According to another aspect of the present invention, a pressure fluid application apparatus is provided, which comprises a micro fluid pump as described above, and which is capable of having the functions and advantages as described above.

In some embodiments, the device is a coffee maker. The coffee machine may be, for example, an espresso machine, or it may also be an american coffee machine, or it may also be another type of coffee machine. Embodiments of the present invention are not limited by the particular type of coffee maker.

In some embodiments, the coffee maker is an espresso maker. Through using the utility model discloses aforementioned miniature fluid pump for this coffee machine can stabilize the fluid of continuously exporting about 10 bar pressure, thereby can brew pure Italian coffee, makes this Italian coffee machine have good performance.

In some embodiments, the device is a dental prophylaxis device. The fluid pressure applying device may be, for example, a household dental prophylaxis device, or it may also be a medical dental prophylaxis device. The embodiment of the utility model is not limited by the application field of the tooth washing device.

The present invention has been described using specific terms to describe embodiments of the invention. Such as "first/second embodiment," "an embodiment," and/or "some embodiments" means a feature, structure, or characteristic described in connection with at least one embodiment of the invention. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the invention may be combined as appropriate.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The micro fluid pump and the pressure fluid application device proposed by the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and improvements can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations of the various technical features and structures proposed by the present invention can be made without departing from the scope of the present invention.

List of reference numerals

100 micro fluid pump

110 motor

120 main casing

130 diaphragm body mounting base

131 mounting recess

132 bowl-shaped supporting part

1321 first surface

1322 second surface

1323 material cut-out

133 mounting hole

134 first flange

140 valve seat

144 second flange

150 upper cover

160 diaphragm body

161 diaphragm unit

1611A arc thin wall part

1611B thickened bottom

1612 mounting post

170 curved bar transmission assembly

171 eccentric wheel

172 eccentric shaft

173 curved bar support assembly

174 a gear assembly.

Claims (14)

1. A micro fluid pump, comprising:

a motor having a motor shaft extending along an axis;

a main housing connected to the motor and defining an accommodating space;

a diaphragm body mount coupled to the main housing, the diaphragm body mount having a diaphragm body with a plurality of diaphragm units disposed thereon;

a crankshaft drive assembly that receives torque from the motor for rotation and is coupled to the diaphragm body to drive reciprocating compression and suction motions of the diaphragm unit;

the diaphragm body mounting seat is provided with a plurality of mounting concave parts corresponding to the diaphragm units respectively, the diaphragm units are supported on the mounting concave parts, and the mounting concave parts comprise bowl-shaped supporting parts and mounting holes arranged at the bottoms of the bowl-shaped supporting parts;

and wherein the bowl-shaped support comprises a first surface facing the diaphragm unit and a second surface opposite to the first surface; a material cut-out is formed on the second surface of the bowl-shaped support along the periphery of the mounting hole.

2. The micro-fluid pump of claim 1, wherein the material cut-out forms a gradually increasing chamfer facing away from the diaphragm unit in a vertical direction.

3. The micro fluid pump of claim 2, wherein the inverted bevel is a tapered surface.

4. The micro fluid pump as claimed in claim 1, wherein the diaphragm unit comprises a bladder cavity opened at an upper portion thereof and having a bowl shape, and a mounting post at a bottom of the bladder cavity, the mounting post passing through the mounting hole, and the bladder cavity being supported on the bowl-shaped supporting portion.

5. The micro fluid pump of claim 4, wherein the bladder cavity comprises an arcuate thin wall portion and a thickened bottom portion, the mounting post being disposed at the thickened bottom portion, the bowl support supporting at least a portion of the arcuate thin wall portion.

6. The micro fluid pump of claim 5, wherein the bowl support supports the arcuate thin wall portion.

7. The micro fluid pump of claim 1, wherein the diaphragm body mount is plastic and the diaphragm body is rubber.

8. The micro fluid pump of claim 1, wherein the plurality of diaphragm units is three diaphragm units and the plurality of mounting holes is three mounting holes.

9. The micro fluid pump of claim 1, wherein the plurality of diaphragm units is four diaphragm units and the plurality of mounting holes is four mounting holes.

10. The micro fluid pump of claim 1, further comprising:

a valve seat sealingly coupled to a diaphragm body mount, the diaphragm body at least partially sandwiched between the diaphragm body mount and the valve seat;

and wherein the diaphragm body mount is further provided with a plurality of first flanges respectively surrounding the mounting recesses and extending toward the valve seat, the valve seat being provided with a plurality of second flanges extending toward the diaphragm body mount at positions corresponding to the plurality of first flanges, the diaphragm unit being sandwiched between the respective first and second flanges.

11. A pressurized fluid application apparatus, characterized in that it comprises a micro fluid pump according to any one of claims 1 to 10.

12. The apparatus of claim 11, wherein the apparatus is a coffee maker.

13. The apparatus of claim 12, wherein the coffee machine is an espresso machine.

14. The apparatus of claim 11, wherein the apparatus is a dental prophylaxis device.

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