Massage mute micro-pump

Abstract

The utility model discloses a massage mute micro -pneumatic pump, including motor assembly and pump air subassembly, and pump air subassembly contains base, upper cover, at least two compression air bag and air bag fixing frame, and motor assembly contains the motor mount of being connected on base, is installed with motor on motor mount, is equipped with compression cavity in each compression air bag, is equipped with the air outlet chamber between base and upper cover, is equipped with the first gas guide channel for intercommunication compression cavity and air outlet chamber on base, is equipped with the one -way valve A only for gas from compression cavity to the air outlet chamber on first gas guide channel, is equipped with the air inlet chamber between motor mount and base, is equipped with the second gas guide channel of intercommunication air inlet chamber and compression cavity between base and air bag fixing frame, is equipped with the one -way valve B only for gas from air inlet chamber to compression cavity on second gas guide channel, has the advantages such as stable operation, little vibration when operating, low noise.

Description

Technical Field

[0001] This utility model relates to a massage silent miniature air pump. Background Technology

[0002] Miniature air pumps have a wide range of applications, such as miniature air pumps for gas sampling in portable instruments, mobile and handheld devices, and miniature air pumps for outputting compressed air. A motor drives an eccentric structure to move the end of the air bladder up and down, thereby stretching or compressing the air bladder to draw in or expel air.

[0003] Existing micro air pumps have poor structural design, resulting in significant vibration and noise during operation of the guide column. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a massage silent miniature air pump, including a motor assembly and a pumping assembly. The pumping assembly includes a base, a top cover, at least two compressed air bladders, and an air bladder fixing bracket for fixing each compressed air bladder to the base. The motor assembly includes a motor mounting base connected to the base, on which a motor is mounted. Each compressed air bladder has a compression chamber. An air outlet chamber is provided between the base and the top cover. The base has a first air guide channel for connecting the compression chamber and the air outlet chamber. The first air guide channel has a one-way valve A that allows gas to flow only from the compression chamber to the air outlet chamber. An air inlet chamber is provided between the motor mounting base and the base. A second air guide channel is provided between the base and the air bladder fixing bracket for connecting the air inlet chamber and the compression chamber. The second air guide channel has a one-way valve A that allows gas to flow only from the air inlet chamber to the air outlet chamber. A one-way valve B connects the air chamber to the compression chamber. The base is also provided with an air outlet communicating with the air outlet chamber and an air inlet communicating with the air inlet chamber. The output shaft of the motor is provided with a drive assembly that drives each compressed air bladder. The drive assembly includes an eccentric wheel, a connecting shaft, and a squeezing swing block. The eccentric wheel is connected to the output shaft of the motor and has a blind mounting hole. The axis of the blind mounting hole is inclined relative to the rotation axis of the eccentric wheel. One end of the connecting shaft is slidably connected in the blind mounting hole. An elastic ball made of elastic material is provided between the blind mounting hole and the connecting shaft. The squeezing swing block is connected to the other end of the connecting shaft. Each compressed air bladder has a connector at its bottom and a connecting hole corresponding to the connector on the squeezing swing block, so that each compressed air bladder moves with the squeezing swing block.

[0005] As described above, in a massage silent miniature air pump, the eccentric wheel is provided with a positioning structure for positioning the eccentric wheel.

[0006] As described above, a massage silent miniature air pump has a positioning structure comprising a first positioning groove and a second positioning groove disposed on an eccentric wheel. The first positioning groove and the second positioning groove are parallel to each other. The distance between the side of the first positioning groove and the rotation axis of the eccentric wheel is d, where d satisfies: 1.8mm≤d≤2.1mm. The distance between the side of the second positioning groove and the rotation axis of the eccentric wheel is w, where w satisfies: 2.4mm≤w≤2.7mm.

[0007] As described above, in a massage silent miniature air pump, the angle between the axis of the mounting blind hole and the rotation axis of the eccentric wheel is α, where α satisfies: 9°≤α≤13°.

[0008] As described above, a massage silent miniature air pump includes two compressed air bladders symmetrically connected to a base. The output shaft of the motor is located at the symmetrical center of the two compressed air bladders, and the two compressed air bladders are integrally molded from an elastic material.

[0009] Compared with the prior art, the present invention has the following advantages:

[0010] 1. The drive assembly of this utility model includes an eccentric wheel, a connecting shaft, and a squeezing swing block. The eccentric wheel is provided with a blind mounting hole. One end of the connecting shaft is slidably connected in the blind mounting hole. An elastic ball made of elastic material is provided between the blind mounting hole and the connecting shaft. The elastic ball can keep the squeezing swing block and the compression air bag in a tight connection state, reduce the gap between the connecting shaft, the squeezing swing block and the compression air bag, and reduce noise.

[0011] 2. Each compressed air bladder is equipped with a connector at its bottom, and a corresponding connection hole is provided on the extrusion swing block, so that the connector can be tightly embedded in the connection hole. This allows each compressed air bladder to move with the extrusion swing block, resulting in smooth operation, low vibration, and low noise. Attached Figure Description

[0012] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is one of the exploded views of this utility model;

[0015] Figure 3 This is the second exploded view of the present invention;

[0016] Figure 4 This is a top view of the present invention;

[0017] Figure 5 for Figure 4A cross-sectional view along the AA direction marked in the middle;

[0018] Figure 6 This is a three-dimensional sectional view of the upper cover, base, compressed airbag, and airbag fixing frame assembled in this utility model.

[0019] Figure 7 This is a bottom view of the upper cover in this utility model;

[0020] Figure 8 This is a full sectional view of the drive component in this utility model;

[0021] Figure 9 This is a bottom view showing the eccentricity of this utility model. Detailed Implementation

[0022] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] like Figures 1 to 9As shown, this embodiment of a massage silent miniature air pump includes a motor assembly 1 and a pumping assembly 2. The pumping assembly 2 includes a base 21, a top cover 22, at least two compressed air bags 23, and an air bag fixing bracket 24 for fixing the two compressed air bags 23 to the base 21. The two compressed air bags 23 are integrally formed from an elastic material and are symmetrically connected to the base 21. The motor assembly 1 includes a motor mounting base 11 connected to the base 21, and a motor 12 is mounted on the motor mounting base 11. The output shaft of the motor 12 is located between the two compressed air bags. At the symmetrical center of each airbag 23, a compression chamber 201 is provided within each airbag 23. An air outlet chamber 202 is provided between the base 21 and the top cover 22. The base 21 is provided with a first air guide channel 203 for connecting the compression chamber 201 and the air outlet chamber 202. The first air guide channel 203 is provided with a one-way valve A25 that allows gas to flow only from the compression chamber 201 to the air outlet chamber 202. An air inlet chamber 204 is provided between the motor mounting base 11 and the base 21. A second air guide channel 205 is provided between the base 21 and the airbag fixing frame 24 for connecting the air inlet chamber 204 and the compression chamber 201. The second air passage 205 is equipped with a one-way valve B26 that allows gas to flow only from the inlet chamber 204 to the compression chamber 201. The base 21 is also equipped with an outlet 27 communicating with the outlet chamber 202 and an inlet 28 communicating with the inlet chamber 204. The output shaft of the motor 12 is equipped with a drive assembly 13 that drives each compressed air bag 23 to move. The drive assembly 13 includes an eccentric wheel 131, a connecting shaft 132, and a compression swing block 133. The eccentric wheel 131 is connected to the output shaft of the motor 12 and has blind holes for mounting. 1311, the axis of the mounting blind hole 1311 is inclined relative to the rotation axis of the eccentric wheel 131, one end of the connecting shaft 132 is slidably connected in the mounting blind hole 1311, and an elastic ball 134 made of elastic material is provided between the mounting blind hole 1311 and the connecting shaft 132. The compression swing block 133 is connected to the other end of the connecting shaft 132. Each compressed air bag 23 has a connector 231 at the bottom, and the compression swing block 133 has a connecting hole 1331 corresponding to the connector 231, so that each compressed air bag 23 moves with the compression swing block 133. The drive assembly of this invention includes an eccentric wheel, a connecting shaft, and a compression swing block. The eccentric wheel has a blind mounting hole. One end of the connecting shaft is slidably connected to the blind mounting hole. An elastic ball made of elastic material is placed between the blind mounting hole and the connecting shaft. The elastic ball ensures a tight connection between the compression swing block and the compressed air bladder, reducing the gap between the connecting shaft, the compression swing block, and the compressed air bladder, thus reducing noise. Each compressed air bladder has a connector at its bottom, and the compression swing block has corresponding connecting holes, allowing the connector to be tightly embedded in the connecting holes. This enables each compressed air bladder to move with the compression swing block, resulting in smooth operation, low vibration, and low noise.

[0024] In order to facilitate proper positioning of the eccentric wheel during assembly, a positioning structure for positioning the eccentric wheel 131 is provided on the eccentric wheel 131.

[0025] In this embodiment, the positioning structure includes a first positioning groove 1312 and a second positioning groove 1313 disposed on the eccentric wheel 131. The first positioning groove 1312 and the second positioning groove 1313 are parallel to each other. The distance d from the rotation axis of the eccentric wheel 131 to the side of the first positioning groove 1312 is satisfied: 1.8mm≤d≤2.1mm. The distance w from the rotation axis of the eccentric wheel 131 to the side of the second positioning groove 1313 is satisfied: 2.4mm≤w≤2.7mm. The unequal distances of the first positioning groove and the second positioning groove from the rotation axis of the eccentric wheel facilitate accurate orientation, prevent reverse assembly, and improve assembly efficiency.

[0026] In this embodiment, the angle between the axis of the blind hole 1311 and the rotation axis of the eccentric wheel 131 is α, where α satisfies: 9°≤α≤13°; this can reduce the noise of the air pump when it is working.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A massage silent miniature air pump, characterized in that: The system includes a motor assembly (1) and an air pump assembly (2). The air pump assembly (2) includes a base (21), a top cover (22), at least two compressed air bags (23), and an air bag holder (24) for fixing each compressed air bag (23) to the base (21). The motor assembly (1) includes a motor mounting base (11) connected to the base (21), on which a motor (12) is mounted. Each compressed air bag (23) has a compression chamber (201). An air outlet chamber (202) is provided between the base (21) and the top cover (22). The base (21) is provided with a connection for... A first air guide channel (203) is provided between the compression chamber (201) and the outlet chamber (202). The first air guide channel (203) is equipped with a one-way valve A (25) that allows gas to flow only from the compression chamber (201) to the outlet chamber (202). An inlet chamber (204) is provided between the motor mounting base (11) and the base (21). A second air guide channel (205) is provided between the base (21) and the airbag fixing frame (24) connecting the inlet chamber (204) and the compression chamber (201). The second air guide channel (205) is equipped with a one-way valve B that allows gas to flow only from the inlet chamber (204) to the compression chamber (201). 26), the base (21) is also provided with an air outlet (27) communicating with the air outlet chamber (202), the base (21) is also provided with an air inlet (28) communicating with the air inlet chamber (204), the output shaft of the motor (12) is provided with a drive assembly (13) for driving each compressed air bag (23) to move, the drive assembly (13) includes an eccentric wheel (131), a connecting shaft (132), and a compression swing block (133), the eccentric wheel (131) is connected to the output shaft of the motor (12), the eccentric wheel (131) is provided with a mounting blind hole (1311), the mounting blind hole (1311) The axis of the connecting shaft (132) is inclined relative to the rotation axis of the eccentric wheel (131). One end of the connecting shaft (132) is slidably connected in the mounting blind hole (1311). An elastic ball (134) made of elastic material is provided between the mounting blind hole (1311) and the connecting shaft (132). The compression swing block (133) is connected to the other end of the connecting shaft (132). Each compressed air bag (23) has a connector (231) at its bottom. The compression swing block (133) has a connecting hole (1331) that corresponds to the connector (231) one by one, so that each compressed air bag (23) moves with the compression swing block (133).

2. The massage silent miniature air pump according to claim 1, characterized in that: The eccentric wheel (131) is provided with a positioning structure for positioning the eccentric wheel (131).

3. The massage silent miniature air pump according to claim 2, characterized in that: The positioning structure includes a first positioning groove (1312) and a second positioning groove (1313) disposed on the eccentric wheel (131). The first positioning groove (1312) and the second positioning groove (1313) are parallel to each other. The distance between the side of the first positioning groove (1312) and the rotation axis of the eccentric wheel (131) is d, where 1.8mm≤d≤2.1mm. The distance between the side of the second positioning groove (1313) and the rotation axis of the eccentric wheel (131) is w, where 2.4mm≤w≤2.7mm.

4. The massage silent miniature air pump according to claim 1, characterized in that: The angle between the axis of the mounting blind hole (1311) and the rotation axis of the eccentric wheel (131) is α, where 9°≤α≤13°.

5. The massage silent miniature air pump according to claim 1, characterized in that: The pump assembly (2) includes two compressed air bags (23), which are symmetrically connected to the base (21). The output shaft of the motor (12) is located at the symmetrical center of the two compressed air bags (23). The two compressed air bags (23) are integrally formed from elastic material.

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