Piezoelectric air pump for pneumatic massage system and pneumatic massage system

Abstract

The utility model relates to the technical field of piezoelectric air pumps, and discloses a piezoelectric air pump and a pneumatic massage system.The piezoelectric air pump shell is characterized in that a containing chamber, an air inlet channel and an exhaust channel are formed in the shell, a circuit board is arranged in the containing chamber, an avoiding hole is formed in the circuit board, and an annular sealing piece is arranged in the avoiding hole; a containing cavity is defined by part of the inner wall of the shell and the annular sealing piece, a piezoelectric vibrator is arranged in the containing cavity, and the containing cavity is communicated with the air inlet channel and the air outlet channel. And the circuit board is electrically connected with the piezoelectric vibrator. Through the mode, the piezoelectric air pump provided by the utility model omits a shell used for independently wrapping the circuit board of the traditional piezoelectric air pump, and shortens the connection path of the circuit board and the piezoelectric vibrator, thereby improving the space utilization rate of the piezoelectric air pump and saving the manufacturing cost.

Description

Technical Field

[0001] This application relates to the technical field of piezoelectric air pumps, and particularly to a piezoelectric air pump for a pneumatic massage system and a pneumatic massage system. Background Art

[0002] Currently, the piezoelectric vibrator and the circuit board of a piezoelectric air pump are respectively arranged in two different housings. The piezoelectric vibrator is connected to the circuit board after passing through the two housings via leads. The separate arrangement of the piezoelectric vibrator and the circuit board requires two housings to accommodate the piezoelectric vibrator and the circuit board respectively, which occupies a large space, and during use and maintenance, it is necessary to disassemble and assemble the two different housings respectively, with cumbersome operations. Summary of the Utility Model

[0003] In view of the problems existing in the background art, the purpose of this application is to provide a piezoelectric air pump for a pneumatic massage system and a pneumatic massage system, so as to solve at least the problems existing in the prior art.

[0004] According to the first aspect of this application, a piezoelectric air pump is provided, including a housing. An accommodation chamber, an air intake passage, and an air exhaust passage are arranged inside the housing. A circuit board is arranged in the accommodation chamber. An avoidance hole is formed in the circuit board. An annular seal is arranged in the avoidance hole. A part of the inner wall of the housing and the annular seal enclose to form a accommodation cavity. A piezoelectric vibrator is arranged in the accommodation cavity. The accommodation cavity is respectively communicated with the air intake passage and the air exhaust passage. The circuit board is electrically connected to the piezoelectric vibrator.

[0005] Optionally, the housing includes a first housing and a second housing. The first housing and the second housing are butted to form the accommodation chamber. Part of the side walls of the first housing and part of the side walls of the second housing respectively clamp the opposite ends of the annular seal. Part of the side walls of the first housing, the annular seal, and part of the side walls of the second housing jointly enclose to form the accommodation cavity.

[0006] Optionally, the annular seal includes a first annular seal and a second annular seal. The first annular seal and the second annular seal jointly clamp the piezoelectric vibrator. The piezoelectric vibrator divides the accommodation cavity into a first piezoelectric cavity and a second piezoelectric cavity.

[0007] Optionally, the first annular seal and the second annular seal jointly clamp the periphery of the piezoelectric vibrator. A wiring portion extends from the periphery of the piezoelectric vibrator. The wiring portion is electrically connected to the circuit board.

[0008] Optionally, the piezoelectric vibrator includes a flexible circuit board, a piezoelectric ceramic and a metal sheet respectively disposed on two sides of the flexible circuit board. The first annular seal and the second annular seal jointly clamp the periphery of the flexible circuit board, and the periphery of the flexible circuit board extends to form the wiring portion.

[0009] Optionally, the wiring portion is welded to the circuit board.

[0010] Optionally, the number of the avoidance holes, the annular seals, the accommodation cavities and the piezoelectric vibrators is at least two and they correspond one by one. One piezoelectric vibrator is disposed in one accommodation cavity. A first series channel is provided in the first housing, and each first piezoelectric cavity is connected in series through the first series channel. A second series channel is provided in the second housing, and each second piezoelectric cavity is connected in series through the second series channel.

[0011] Optionally, the first housing is detachably fixed to the second housing.

[0012] Optionally, the first housing is fixed to the second housing by screwing.

[0013] According to a second aspect of the present application, there is provided a pneumatic massage system including the piezoelectric air pump as described above.

[0014] The beneficial effects of the embodiments of the present application are as follows: Different from the prior art, the piezoelectric air pump provided by the embodiments of the present application includes a housing. An accommodation chamber, an air intake channel and an air exhaust channel are provided inside the housing. A circuit board is provided in the accommodation chamber. An avoidance hole is provided on the circuit board. An annular seal is provided in the avoidance hole. A part of the inner wall of the housing and the annular seal surround to form an accommodation cavity. A piezoelectric vibrator is provided in the accommodation cavity. The accommodation cavity is respectively communicated with the air intake channel and the air exhaust channel. The circuit board is electrically connected to the piezoelectric vibrator. Compared with the conventional piezoelectric air pump in which the piezoelectric vibrator and the circuit board are respectively disposed in two different housings, the housing for separately wrapping the circuit board in the conventional piezoelectric air pump is omitted, and the connection path between the circuit board and the piezoelectric vibrator is shortened, thereby improving the space utilization rate of the structure of the piezoelectric air pump and saving the manufacturing cost. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally denoted by similar reference numerals. In the drawings, the elements or parts do not necessarily draw according to the actual scale.

[0016] Figure 1A perspective view of a piezoelectric pump provided by an embodiment of the present utility model;

[0017] Figure 2 is Figure 1 the exploded view of the piezoelectric pump shown;

[0018] Figure 3 is Figure 1 the schematic diagram of the first housing of the piezoelectric pump shown;

[0019] Figure 4 is Figure 1 a schematic cross-sectional view of the piezoelectric pump shown;

[0020] Figure 5 is Figure 4 the enlarged partial view at position A in Detailed implementation manners

[0021] For the convenience of understanding the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer" and similar expressions used in this specification are only for the purpose of illustration.

[0022] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not used to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0023] In the description of this specification, unless otherwise clearly specified and limited, the terms "connected", "connected", "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0024] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0025] Please refer to Figures 1-4, the piezoelectric air pump 1000 includes a housing 1, a piezoelectric vibrator 2, and a circuit board 3. The housing 1 is provided with a receiving chamber a, an air inlet passage c, and an air outlet passage d. The circuit board 3 is disposed in the receiving chamber a. The circuit board 3 is provided with an avoidance hole 31, and an annular seal 13 is provided in the avoidance hole 31. A part of the inner wall of the housing 1 and the annular seal 13 enclose a receiving cavity b, and the receiving cavity b is respectively communicated with the air inlet passage c and the air outlet passage d. The piezoelectric vibrator 2 is disposed in the receiving cavity b and can vibrate in the receiving cavity b. The circuit board 3 is electrically connected to the piezoelectric vibrator 2, and the circuit board 3 is used to supply power to the piezoelectric vibrator 2 and provide a control signal. In this way, compared with the traditional piezoelectric air pump in which the piezoelectric vibrator and the circuit board are separately arranged, in this application, the circuit board 3 and the piezoelectric vibrator 2 are integrally arranged in the housing 1, eliminating the housing for separately wrapping the circuit board 3 in the traditional piezoelectric air pump, and shortening the connection path between the circuit board 3 and the piezoelectric vibrator 2, thereby improving the space utilization rate of the structure of the piezoelectric air pump 1000 and saving the manufacturing cost.

[0026] For the above-mentioned housing 1, in this embodiment, the housing 1 includes a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are butted to form a receiving chamber a. Part of the inner wall of the first housing 11 and part of the inner wall of the second housing 12 jointly clamp the opposite ends of the annular seal 13. Part of the inner wall of the first housing 11, the annular seal 13, and part of the inner wall of the second housing 12 jointly enclose a receiving cavity b. Specifically, the first housing 11 includes a first substrate 111, a first side enclosure 112, and a first protrusion 113. The first side enclosure 112 is disposed around the periphery of the first substrate 111. The first side enclosure 112 and the first substrate 111 enclose a first groove, and the first protrusion 113 is disposed at the bottom of the first groove. The second housing 12 includes a second substrate 121, a second side enclosure 122, and a second protrusion 123. The second side enclosure 122 is disposed around the periphery of the second substrate 121. The second side enclosure 122 and the second substrate 121 enclose a second groove, and the second protrusion 123 is disposed at the bottom of the second groove. One end of the first side enclosure 112 facing away from the first substrate 111 is connected to one end of the second side enclosure 122 facing away from the second substrate 121. The first substrate 111, the first side enclosure 112, the second substrate 121, and the second side enclosure 122 jointly enclose a receiving chamber a. The surface of the first protrusion 113 facing the second substrate 121 abuts against one end face of the annular seal 13, and the surface of the second protrusion 123 facing the first substrate 111 abuts against the other end face of the annular seal 13. Both ends of the annular seal 13 are respectively abutted against the surfaces of the first protrusion 113 and the second protrusion 123 to realize a sealed connection with the first protrusion 113 and the second protrusion 123. The surface of the first protrusion 113 facing the second substrate 121, the inner side wall of the annular seal 13, and the surface of the second protrusion 123 facing the first substrate 111 jointly enclose a receiving cavity b.

[0027] Further, please refer to Figure 2 , Figure 4 and Figure 5 , in this embodiment, the annular seal 13 includes a first annular seal 131 and a second annular seal 132. The first annular seal 131 and the second annular seal 132 jointly clamp the piezoelectric vibrator 2, and the piezoelectric vibrator 2 divides the accommodation cavity b into a first piezoelectric cavity b1 and a second piezoelectric cavity b2. Specifically, the surface of the first protrusion 113 facing the second protrusion 123 abuts against the end face of one end of the first annular seal 131 facing away from the piezoelectric vibrator 2, the end face of one end of the first annular seal 131 facing the piezoelectric vibrator 2 abuts against the surface of the piezoelectric vibrator 2 facing the first protrusion 113, the surface of the second protrusion 123 facing the first protrusion 113 abuts against the end face of one end of the second annular seal 132 facing away from the piezoelectric vibrator 2, and the end face of one end of the second annular seal 132 facing the piezoelectric vibrator 2 abuts against the surface of the piezoelectric vibrator 2 facing the second protrusion 123. The surface of the first protrusion 113 facing the second substrate 121, the inner side wall of the first annular seal 131, and the surface of the piezoelectric vibrator 2 facing the first protrusion 113 jointly enclose the first piezoelectric cavity b1, and the surface of the second protrusion 123 facing the first substrate 111, the inner side wall of the second annular seal 132, and the surface of the piezoelectric vibrator 2 facing the second protrusion 123 jointly enclose the second piezoelectric cavity b2. While playing a role in sealing connection, the first annular seal 131 and the second annular seal 132 also play a role in fixing the piezoelectric vibrator 2. The first annular seal 131 and the second annular seal 132 can be annular sealing rings, or can be a sealing structure formed by applying a circle of glue to the annular area along the periphery of the first protrusion 113 and / or the second protrusion 123.

[0028] It can be understood that the piezoelectric vibrator 2 is not limited to being arranged to divide the accommodation cavity b into a first piezoelectric cavity b1 and a second piezoelectric cavity b2. For example, in some other embodiments, the annular seal 13 is an integrally formed single component, and the piezoelectric vibrator 2 is fixed to the surface of the first housing 11 facing the accommodation cavity b or the surface of the second housing 12 facing the accommodation cavity b, that is, only one piezoelectric cavity is formed in the accommodation cavity b.

[0029] In order to facilitate the disassembly and assembly of the components of the piezoelectric air pump 1000, further, in some embodiments, the first housing 11 is detachably fixed to the second housing 12. Specifically, in this embodiment, the first housing is screwed and fixed to the second housing. More specifically, the piezoelectric air pump 1000 further includes a locking bolt, and along the direction from the first housing 11 to the second housing 12, the locking bolt screws and fixes the first housing 11 to the second housing 12. It can be understood that in some other embodiments, the first housing 11 and the second housing 12 can also be detachably connected by means of clamping, magnetic attraction, etc.

[0030] For the piezoelectric vibrator 2 described above, refer to Figure 5 , in this embodiment, specifically, the piezoelectric vibrator 2 includes a flexible circuit board 21, and a piezoelectric ceramic 22 and a metal sheet 23 respectively disposed on both sides of the flexible circuit board 21. The first annular seal 131 and the second annular seal 132 jointly clamp the periphery of the flexible circuit board 21.

[0031] In this embodiment, the piezoelectric vibrator 2 further includes a wiring portion (not shown in the figure), which extends from the periphery of the piezoelectric vibrator 2 and is used for electrically connecting to the circuit board 3. Specifically, the wiring portion extends from the abutting portion 213 of the flexible circuit board 21, and the end of the wiring portion away from the abutting portion 213 is welded to the circuit board 3. It can be understood that the wiring portion is not limited to being electrically connected to the circuit board 3 by welding. In some other embodiments, the wiring portion can also be electrically connected to the circuit board 3 by setting a plug for plugging and the like.

[0032] For the above-mentioned circuit board 3, refer to Figures 2-5 , in some embodiments, the circuit board 3 is sleeved on the annular seal 13 through the avoidance hole 31. On the side of the first substrate 111 facing the second substrate 121 and on the side of the second substrate 121 facing the first substrate 111, a first limiting protrusion (not shown in the figure) and a second limiting protrusion (not shown in the figure) are respectively provided. The first limiting protrusion and the second limiting protrusion respectively abut against both side surfaces of the circuit board 3 to limit and fix the circuit board 3.

[0033] It should be understood that the present application does not specifically limit the fixing manner of the circuit board 3. For example, in other embodiments of the present application, the circuit board 3 can also be fixed to the housing 1 by means of snap connection, bolt connection, bonding, etc., which will not be elaborated one by one here.

[0034] Please refer to Figure 4 and Figure 5 , in this embodiment, the first annular seal 131 is accommodated in the avoidance hole 31. Along the direction from the first housing 11 to the second housing 12, the abutting portion 213 and the second annular seal 132 protrude out of the avoidance hole 31, and the end of the wiring portion away from the abutting portion 213 is welded to the surface of the circuit board 3 facing the second housing 12. It can be understood that in some other embodiments, the circuit board 3 can also be configured such that the second annular seal 132 is accommodated in the avoidance hole 31. Along the direction from the second housing 12 to the first housing 11, the abutting portion 213 and the first annular seal 132 protrude out of the avoidance hole 31, and the end of the wiring portion away from the abutting portion 213 is welded to the surface of the circuit board 3 facing the first housing 11; or the abutting portion 213 is accommodated in the avoidance hole 31, and the wiring portion is connected to the circuit board 3 within the avoidance hole 31 or the wiring portion extends from within the avoidance hole 3 to outside the avoidance hole 3 and then is connected to the circuit board 3.

[0035] Please refer to Figure 2 、 Figure 4 and Figure 5 ,In some embodiments, the number of the relief holes 31, the annular seals 13, the accommodating cavities b, and the piezoelectric vibrators 2 is at least two and they correspond to each other one by one. One piezoelectric vibrator 2 is arranged in one accommodating cavity b. The first housing 11 is provided with a first series channel e, and each first piezoelectric cavity b1 is connected in series through the first series channel e. The second housing 12 is provided with a second series channel f, and each second piezoelectric cavity b2 is connected in series through the second series channel f. The intake channel c includes a first intake channel c1 and a second intake channel c2. The first intake channel c1 and the second intake channel c2 are respectively communicated with the first piezoelectric cavity b1 and the second piezoelectric cavity b2 of the accommodating cavity b located at the starting end. The exhaust channel d includes a first exhaust channel d1 and a second exhaust channel d2. The first exhaust channel d1 and the second exhaust channel d2 are respectively communicated with the first piezoelectric cavity b1 and the second piezoelectric cavity b2 of the accommodating cavity b located at the end. Specifically, taking the number of the accommodating cavities b and the piezoelectric vibrators 2 both being two as an example, the number of the first annular seal 131, the second annular seal 132, the first convex portion 113, the second convex portion 123, and the relief holes 31 is both two. One first annular seal 131, one second annular seal 132, one first convex portion 113, and one second convex portion 123 jointly enclose to form one accommodating cavity b. One piezoelectric vibrator 2 is arranged in one accommodating cavity b and divides the accommodating cavity b into a first piezoelectric cavity b1 and a second piezoelectric cavity b2. The two accommodating cavities b are arranged side by side. One end of the first series channel e is communicated with one first piezoelectric cavity b1, and the other end of the first series channel e is communicated with the other first piezoelectric cavity b1. One end of the second series channel f is communicated with one second piezoelectric cavity b2, and the other end of the second series channel f is communicated with the other second piezoelectric cavity b2.

[0036] For the piezoelectric air pump 1000 of the present application, by integrally arranging the circuit board 3 in the accommodating chamber a of the housing 1 and providing the relief holes 31 on the circuit board 3 to avoid the accommodating cavity b, compared with the traditional piezoelectric air pump 1000 in which the piezoelectric vibrator 2 and the circuit board 3 are respectively arranged in two different housings 1, the housing 1 used to separately wrap the circuit board 3 in the traditional piezoelectric air pump is omitted, and the connection path between the circuit board 3 and the piezoelectric vibrator 2 is shortened, thereby improving the space utilization rate of the piezoelectric air pump 1000 and saving the manufacturing cost.

[0037] The embodiment of the present application further provides a pneumatic massage system, including the piezoelectric air pump 1000 in any of the above embodiments. For the structure and function of the piezoelectric air pump 1000, please refer to the above embodiments and will not be elaborated herein one by one.

[0038] The embodiment of the present application further provides a pneumatic massage device, including the pneumatic massage system of any of the above embodiments. Among them, the pneumatic massage device can be a massage chair, a massager, etc.

[0039] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present application.

Claims

1. A piezoelectric pump for a pneumatic massage system, characterized in that: It includes a shell, a accommodating chamber, an air inlet channel and an exhaust channel are arranged inside the shell, a circuit board is arranged in the accommodating chamber, a avoidance hole is opened on the circuit board, an annular seal is arranged in the avoidance hole, part of the inner wall of the shell and the annular seal are combined to form an accommodating chamber, a piezoelectric vibrator is arranged in the accommodating chamber, the accommodating chamber is communicated with the air inlet channel and the exhaust channel respectively, and the circuit board is electrically connected to the piezoelectric vibrator.

2. The piezoelectric pump for a pneumatic massage system according to claim 1, characterized in that: The shell includes a first shell and a second shell, the first shell and the second shell are connected to form the accommodating chamber, the partial inner wall of the first shell and the partial inner wall of the second shell respectively clamp the opposite ends of the annular seal, and the partial inner wall of the first shell, the annular seal and the partial inner wall of the second shell together enclose the accommodating cavity.

3. The piezoelectric pump for a pneumatic massage system according to claim 2, characterized in that: The annular seal comprises a first annular seal and a second annular seal, the first annular seal and the second annular seal jointly clamp the piezoelectric vibrator, and the piezoelectric vibrator divides the accommodating cavity into a first piezoelectric cavity and a second piezoelectric cavity.

4. The piezoelectric pump for a pneumatic massage system according to claim 3, characterized in that: The first annular seal and the second annular seal jointly clamp the periphery of the piezoelectric vibrator. A wiring portion extends from the periphery of the piezoelectric vibrator, and the wiring portion is electrically connected to the circuit board.

5. The piezoelectric pump for a pneumatic massage system according to claim 4, characterized in that: The piezoelectric vibrator includes a flexible circuit board and piezoelectric ceramics and metal sheets respectively arranged on both sides of the flexible circuit board. The first annular seal and the second annular seal jointly clamp the periphery of the flexible circuit board, and the periphery of the flexible circuit board extends to form the wiring portion.

6. The piezoelectric pump for a pneumatic massage system according to claim 5, characterized in that: The connection portion is welded to the circuit board.

7. The piezoelectric pump for a pneumatic massage system according to any one of claims 3 to 6, characterized in that: The number of the avoidance holes, the annular seals, the accommodating chambers and the piezoelectric vibrators are at least two and correspond one to one. One piezoelectric vibrator is arranged in one of the accommodating chambers. A first series channel is arranged in the first shell, and each of the first piezoelectric chambers is connected in series through the first series channel. The second shell is provided with a second series channel, and each of the second piezoelectric chambers is connected in series through the second series channel.

8. The piezoelectric pump for a pneumatic massage system according to any one of claims 2 to 6, characterized in that: The first shell is detachably fixed to the second shell.

9. The piezoelectric pump for a pneumatic massage system according to claim 8, characterized in that: The first shell is screwed and fixed to the second shell.

10. A pneumatic massage system, characterized in that: Comprising a piezoelectric pump as described in any one of claims 1-9.

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