阅读说明：本技术 一种微型电动气泵 (Miniature electric air pump ) 是由 黄春结 陈红岩 吴志强 叶彬 刘检荣 肖磊 颜长林 颜君 卢友浪 游广海 雷秀芳 于 2021-08-26 设计创作，主要内容包括：本发明公开了一种微型电动气泵,涉及气泵技术领域,其技术方案要点是：包括电机以及气囊座,所述壳体内设有驱动盘,所述气囊座内设有带有多个气囊腔的气囊,所述气囊包括安安装盘以及气囊体,所述气囊腔设于气囊体上,所述驱动盘上设有若干个打气垫,所述安装盘上开设有若干个安装口,且所述安装口的内壁上开设有活动槽,所述气囊体的一端穿过安装口后与驱动盘对位,另一端设置有活动块,所述活动块升降设于活动槽内,且所述活动块与安装口之间设有定位结构。本发明能够在停机状态下使得气囊体处于常态,并能够根据打气需求选用对应数量的气囊体进行打气,满足变量充气的需求,具有提高其使用的便捷性的效果。(The invention discloses a miniature electric air pump, which relates to the technical field of air pumps and adopts the technical scheme that: including motor and gasbag seat, be equipped with the driving-disc in the casing, be equipped with the gasbag that has a plurality of gasbag chambeies in the gasbag seat, the gasbag is including ann mounting disc and the gasbag body, the gasbag chamber is located on the gasbag body, be equipped with a plurality of pad of inflating on the driving-disc, a plurality of installing port has been seted up on the mounting disc, just movable groove has been seted up on the inner wall of installing port, the one end of the gasbag body is counterpointed with the driving-disc after passing the installing port, and the other end is provided with the movable block, movable inslot is located in the movable block lift, just be equipped with location structure between movable block and the installing port. The air bag body inflation device can enable the air bag bodies to be in a normal state in a shutdown state, and can select a corresponding number of air bag bodies for inflation according to inflation requirements, so that the requirement of variable inflation is met, and the air bag inflation device has the effect of improving the convenience of use.)

1. A miniature electric air pump comprises a motor (1), a shell (2), an air bag seat (3), a valve seat (4) and a cover body (5) which are sequentially connected along the axis of the motor (1), an air outlet pipe (51) is arranged on the cover body (5), a cam (6) is installed on an output shaft of the motor (1), a driving disc (7) connected with the cam (6) is arranged in the shell (2), an air bag (8) with a plurality of air bag cavities (81) is arranged in the air bag seat (3), an air valve (41) is arranged in the valve seat (4), the miniature electric air pump is characterized in that the air bag (8) comprises a mounting disc (82) arranged on the air bag seat (3) and a plurality of air bag bodies (83) which are circumferentially distributed on the mounting disc (82), the air bag cavities (81) are arranged on the air bag bodies (83), a plurality of inflating cushions (71) used for extruding the air bag bodies (83) are arranged on the driving disc (7), the inflating cushions (71) are arranged corresponding to the air sac bodies (83) one by one, a plurality of mounting openings (821) corresponding to the air sac bodies (83) one by one are arranged on the mounting disc (82), the axial direction of the mounting port (821) is consistent with the expansion direction of the air bag body (83), a movable groove (822) is arranged on the inner wall of the mounting opening (821), one end of the air bag body (83) passes through the mounting opening (821) and then is aligned with the driving disc (7), a movable block (831) is arranged at the other end, the movable block (831) is arranged in the movable groove (822) along the axial direction of the mounting hole (821) in a lifting way, and a positioning structure (9) used for positioning the movable block (831) on the movable groove (822) is arranged between the movable block (831) and the mounting hole (821), when the movable block (831) is in a movable state, the driving disc (7) drives the airbag body (83) to be positioned in the mounting opening (821) to move in the swinging process; when the movable block (831) is positioned on the movable groove (822), the air bag body (83) is positioned at the mounting opening (821), and one end, far away from the movable block (831), of the air bag body (83) is pulled by the driving disc (7), so that the air bag body (83) can be pressed to perform inflating operation in the swinging process of the driving disc (7).

2. The miniature electric air pump according to claim 1, wherein the positioning structure (9) comprises a first magnetic attraction part (91) disposed on the bottom of the movable block (831) and a first electromagnet (92) disposed on the bottom end of the movable groove (822), the first magnetic attraction part (91) has magnetism for attracting the first electromagnet (92), and when the first electromagnet (92) is energized, the first magnetic attraction part (91) is attracted to the first electromagnet (92) to position the movable block (831) at the bottom end of the movable groove (822).

3. The miniature electric air pump according to claim 2, wherein the middle of the movable groove (822) is provided with a plurality of magnetic attraction parts II (93), the peripheral wall of the movable block (831) is provided with an electromagnet II (94), the magnetic attraction parts II (93) have magnetism for attracting with the electromagnet II (94), when the electromagnet II (94) is energized, the movable block (831) is positioned at the position of the corresponding electromagnet II (94), and the swing of the driving disc (7) can press the air bag bodies (83) for inflating, wherein when the movable blocks (831) of two air bag bodies (83) are respectively positioned at the electromagnet I (92) and the electromagnet II (94), the swing of the driving disc (7) can synchronously press the two air bag bodies (83) for inflating.

4. The miniature electric air pump according to claim 3, wherein a connection terminal (11) is arranged at one end of the motor (1) far away from the housing (2), the first electromagnet (92) and the second electromagnet (94) are both connected with a power-on switch (95), and the power-on switch (95) is electrically connected with the connection terminal (11) and is used for controlling the first electromagnet (92) and the second electromagnet (94) to be switched on and off.

5. The miniature electric air pump according to claim 1, wherein a plurality of balls (832) are rotatably disposed on the peripheral wall of the movable block (831), the balls (832) are uniformly disposed along the circumferential direction of the movable block (831), the movable groove (822) is provided with arc-shaped strips (8221) corresponding to the balls (832) one by one, a cooling air flow channel (8222) is formed between two adjacent arc-shaped strips (8221), and when the movable block (831) moves in the movable groove (822), the balls (832) abut against the end portions of the arc-shaped strips (8221).

6. The miniature electric air pump according to claim 1, wherein one end of the air bag cavity (81) close to the driving disk (7) is provided with a plurality of air inlet holes (811), the air bag cavity (81) is provided with an air passage (711), one end of the air passage (711) is arranged in a staggered manner with the air inlet holes (811), the air bag cavity (81) is provided with an air inlet valve plate (812) for controlling the one-way air inlet of the air inlet holes (811), the output shaft of the motor (1) is provided with an air inlet impeller (12), the shell (2) is provided with an air inlet passage (21) aligned with the air inlet end of the air inlet impeller (12), and the air outlet end of the air inlet impeller (12) is circumferentially surrounded and is respectively arranged in a position opposite to each air bag (71).

7. The miniature electric air pump according to claim 6, wherein the air inlet impeller (12) comprises a rotating base plate (121), an air collecting cover (122) disposed on the rotating base plate (121), and a plurality of arc-shaped blades (123) disposed in the air collecting cover (122), an air guiding groove (124) is formed between two adjacent blades (123), an air inlet cavity (125) is disposed at the air inlet passage (21) of the housing (2) on the base plate (121), the air inlet cavity (125) is communicated with the air guiding groove (124), and each air guiding groove (124) penetrates through the air collecting cover (122) and is disposed on each air pumping cushion (71).

8. The miniature electric air pump according to any one of claims 1 or 2, wherein a clamping structure (10) for fixedly connecting the inflating cushion (71) and the air bag body (83) is arranged between the inflating cushion (71) and the air bag body (83).

9. The miniature electric air pump according to claim 8, wherein the inflating pad (71) is inserted into the bottom of the air bag body (83), the clamping structure (10) comprises a clamping hole (101) formed in the sidewall of the bottom of the air bag body (83) and a buckle (102) formed in the sidewall of the top of the inflating pad (71), the buckle (102) passes through the clamping hole (101) and is clamped on the outer sidewall of the clamping hole (101), and two clamping holes (101) and two buckles (102) are symmetrically arranged.

Technical Field

The invention relates to the technical field of air pumps, in particular to a miniature electric air pump.

Background

An air pump is a device that exhausts air from an enclosed space or adds air from an enclosed space. The miniature air pump is usually an electric air pump, and the air pump generates air pressure under the driving of a motor or a motor by taking electric power as power, so that the miniature air pump can be used for inflation.

If the Chinese patent with the publication number of CN212672034U and the publication date of 20210309 discloses a micro air pump, which comprises a motor, a pump body, a diaphragm plate, a diaphragm, a lower valve plate, a valve and an upper valve plate, wherein the body of the motor is fixedly arranged at one end of the outer side of the pump body, a driving shaft of the motor extends into the pump body, the diaphragm plate is fixedly arranged at the other end of the outer side of the pump body, the diaphragm is pressed on the diaphragm plate by the lower valve plate, the valve is pressed on the lower valve plate by the upper valve plate, the output end of the motor is connected with one end of an eccentric wheel, the eccentric wheel is positioned in the pump body, the other end of the eccentric wheel is connected with a needle roller, one end of the needle roller is hinged with the eccentric wheel, the other end of the needle roller is inserted in a blind hole at the end part of a transmission member, a plurality of extrusion blades are distributed on the circumference of the outer side of the blind hole of the transmission member in an array manner, and after the extrusion blades rotate through the eccentric wheel and the eccentric wheel, and sequentially extruding the diaphragms on the diaphragm plates to complete the reciprocating periodic action of the diaphragms.

The motor drives the eccentric wheel to rotate, so that the eccentric wheel drives the extrusion blade to extrude once, and the extrusion blade extrudes the diaphragm to realize inflation operation. However, even when the device is stopped for use, one blade still extrudes the diaphragm, the service life of the diaphragm is easy to be short due to long-term compression, the inflation quantity is constant when the eccentric wheel rotates at each time, the diaphragms are sequentially and respectively driven to extrude and inflate, the inflation quantity is constant at each time, adjustment cannot be performed according to actual requirements, alternate operation of deflation and inflation may need to be performed for multiple times, the air pressure of an inflated product can meet the requirement, and the use is troublesome.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a miniature electric air pump which can enable air bag bodies to be in a normal state in a shutdown state, can select a corresponding number of air bag bodies for inflation according to inflation requirements, meets the requirement of variable inflation, and has the effect of improving the convenience of use.

In order to achieve the purpose, the invention provides the following technical scheme:

a miniature electric air pump comprises a motor, a shell, an air bag seat, a valve seat and a cover body which are sequentially connected along the axis of the motor, wherein an air outlet pipe is arranged on the cover body, a cam is arranged on an output shaft of the motor, a driving disc connected with the cam is arranged in the shell, an air bag with a plurality of air bag cavities is arranged in the air bag seat, an air valve is arranged in the valve seat, the air bag comprises a mounting disc arranged on the air bag seat and a plurality of air bag bodies circumferentially distributed on the mounting disc, the air bag cavities are arranged on the air bag bodies, a plurality of inflating cushions used for extruding the air bag bodies are arranged on the driving disc, the inflating cushions and the air bag bodies are arranged in a one-to-one correspondence manner, a plurality of mounting ports in one-to-one correspondence with the air bag bodies are arranged on the mounting disc, the axial direction of each mounting port is consistent with the telescopic direction of the air bag bodies, and movable grooves are arranged on the inner wall of the mounting ports, one end of the airbag body passes through the mounting opening and then is aligned with the driving disc, the other end of the airbag body is provided with a movable block, the movable block is arranged in the movable groove in a lifting mode along the axial direction of the mounting opening, a positioning structure used for positioning the movable block on the movable groove is arranged between the movable block and the mounting opening, and when the movable block is in a movable state, the airbag body is driven to move in the mounting opening in the swinging process of the driving disc; when the movable block is positioned on the movable groove, the air bag body is positioned at the mounting opening, and one end, far away from the movable block, of the air bag body is pulled by the driving disc, so that the air bag body can be pressed to perform inflating operation in the swinging process of the driving disc.

Further setting: the positioning structure comprises a first magnetic suction part and a first electromagnet, wherein the first magnetic suction part is arranged on the bottom of the movable block, the first electromagnet is arranged on the bottom of the movable groove, the first magnetic suction part has magnetism used for attracting the first electromagnet, and when the first electromagnet is electrified, the first magnetic suction part is attracted to the first electromagnet so as to position the movable block at the bottom of the movable groove.

Further setting: the middle part of activity groove is provided with a plurality of magnetism portion two of inhaling, be provided with electro-magnet two on the perisporium of movable block, magnetism portion two of inhaling has the magnetism that is used for inhaling mutually with electro-magnet two, when electro-magnet two circular telegram, the movable block location is in the position department of the electro-magnet two that corresponds, just the swing of driving-disc can press the gasbag body and inflate the operation, wherein two when the movable block of the gasbag body is located electro-magnet one and electro-magnet two respectively, the swing of driving-disc can press two gasbag bodies in step and inflate the operation.

Further setting: the one end that the casing was kept away from to the motor is provided with binding post, electro-magnet I all is connected with the circular telegram switch with electro-magnet II, circular telegram switch is connected with binding post electricity to be used for controlling the switching circular telegram and the outage of electro-magnet I and electro-magnet II.

Further setting: rotate on the periphery wall of movable block and be equipped with a plurality of balls, a plurality of balls evenly set up along the movable block circumferencial direction, be provided with on the activity groove with a plurality of balls one-to-one's arc strip, adjacent two form the cooling air flow passageway between the arc strip, when the movable block activity was in the activity inslot, the ball was contradicted in the tip of arc strip.

Further setting: the air bag type air inlet device is characterized in that one end, close to the driving disc, of the air bag cavity is provided with a plurality of air inlet holes, the inflating pad is provided with an air passage, one end of the air passage and the air inlet holes are arranged in a staggered mode, the air bag cavity is provided with an air inlet valve block used for controlling the air inlet holes to admit air in a single direction, an air inlet impeller is arranged on an output shaft of the motor, the shell is provided with an air inlet passage aligned with the air inlet end of the air inlet impeller, and the air outlet end of the air inlet impeller is circumferentially surrounded and is respectively aligned with each inflating pad.

Further setting: the air inlet impeller comprises a rotating bottom plate, an air collecting cover arranged on the rotating bottom plate and a plurality of arc-shaped blades arranged in the air collecting cover, an air guide groove is formed between every two adjacent blades, an air inlet cavity is formed in the position, located on an air inlet channel of the shell, of the bottom plate, the air inlet cavity is communicated with the air guide groove, and the air guide grooves penetrate through the air collecting cover and are respectively arranged on the air inflating cushions.

Further setting: and a clamping structure for fixedly connecting the inflating pad and the air bag body is arranged between the inflating pad and the air bag body.

Further setting: the inflating pad is inserted into the bottom of the air bag body, the clamping structure comprises a clamping hole formed in the side wall of the bottom of the air bag body and a buckle arranged on the side wall of the top of the inflating pad, the buckle penetrates through the clamping hole and is clamped on the outer side wall of the clamping hole, and the clamping hole and the buckle are symmetrically arranged.

Compared with the prior art, the invention has the following advantages by adopting the technical scheme:

1. the movable block is matched with the positioning structure, the air bag body can be switched between inflation operation and non-inflation operation, the air bag body is in a normal state in a shutdown state and is not extruded or stretched by the inflation cushion, the service life of the air bag body is prolonged, meanwhile, the air bag bodies with corresponding quantity can be selected for inflation according to inflation requirements, the variable inflation requirements are met, the operation is easier for micro inflation, and the use convenience is improved;

2. the electromagnet I is matched with the magnetic attraction part I, so that the movable block can be switched between a positioning state and a moving state by switching the power-on state and the power-off state of the electromagnet I, the state of the air bag body can be conveniently adjusted according to requirements, the air bag body is positioned when the air bag body needs to be inflated, and the air bag body moves along with the movable block when the air bag body does not need to be inflated, so that the using requirements under various conditions are met, the structure is simple, the operation is convenient, and the use convenience is improved;

3. through the arrangement of the second electromagnet and the second magnetic absorption part, after one of the air bag bodies is positioned by the first electromagnet, the other air bag body is positioned by the second electromagnet, so that the two air bag bodies are staggered in height, the corresponding inflating cushions can synchronously stretch and compress the air bag bodies, the effect of simultaneously inflating is realized, and the requirement of quick inflating is met;

4. through the arrangement of the wiring terminal, the butt joint of the motor and the power supply is facilitated, the switching on and off of the electromagnet I and the electromagnet II can be conveniently controlled in a matching manner with the connection of the power-on switch, the positioning position of the movable block is conveniently controlled, the use requirement is met, and the convenience in operation is improved;

5. the sliding of the movable block forms point contact through the arranged ball and the arc-shaped strip, so that the friction force is reduced, the smoothness is improved, the heat energy generated by friction can be reduced, the air flow is further utilized to cool in cooperation with the cooling air flow channel, the damage caused by the temperature rise of the air bag is avoided, and the effect of prolonging the service life of the air bag is achieved;

6. through the air inlet impeller and the ventilation channel, the size of air flow entering the air bag cavity can be improved, so that sufficient inflation quantity is provided, and inflation operation is convenient.

Drawings

FIG. 1 is a schematic structural view of a micro electric air pump;

FIG. 2 is an exploded view of the miniature electric air pump;

FIG. 3 is a schematic cross-sectional view of a miniature electric air pump;

FIG. 4 is an enlarged schematic view at A in FIG. 3;

FIG. 5 is an enlarged schematic view at B in FIG. 3;

FIG. 6 is a partial schematic structural view of the mounting plate taken along the radial direction of the mounting opening;

fig. 7 is a schematic connection diagram of the first electromagnet, the second electromagnet, the power-on switch and the connecting terminal.

In the figure: 1. a motor; 11. a wiring terminal; 12. an air intake impeller; 121. a base plate; 122. a wind collecting cover; 123. a blade; 124. a wind guide groove; 125. an air inlet cavity; 13. a controller; 2. a housing; 21. an air intake passage; 3. an air bag seat; 31. a positioning column; 4. a valve seat; 41. an air valve; 5. a cover body; 51. an air outlet pipe; 6. a cam; 7. a drive disc; 71. inflating an air cushion; 711. a vent passage; 8. an air bag; 81. a balloon lumen; 811. an air inlet; 812. an air inlet valve plate; 82. mounting a disc; 821. an installation port; 822. a movable groove; 8221. an arc-shaped strip; 8222. a cooling gas flow channel; 83. a balloon body; 831. a movable block; 832. a ball bearing; 84. a let position port; 9. a positioning structure; 91. a first magnetic part; 92. an electromagnet I; 93. a second magnetic part; 94. an electromagnet II; 95. a power-on switch; 10. a clamping structure; 101. a clamping hole; 102. and (5) buckling.

Detailed Description

The micro electric air pump will be further described with reference to fig. 1 to 7.

The utility model provides a miniature electronic air pump, as shown in figure 1, includes motor 1 and the casing 2 that connects gradually along motor 1 axis, gasbag seat 3, disk seat 4 and lid 5, evenly wears to be equipped with three connecting bolt on lid 5 along its circumferencial direction, and connecting bolt wears to establish disk seat 4 and 3 back threaded connection of gasbag seat on casing 2 in proper order, and wherein casing 2 passes through construction bolt with motor 1 and is connected, overall structure is simple, convenient equipment use.

As shown in fig. 2, a cam 6 is mounted on an output shaft of a motor 1, a driving disc 7 connected with the cam 6 is arranged in a shell 2, a linkage rod is eccentrically mounted on the cam 6, the driving disc 7 is connected with the cam 6 through the linkage rod, and one end of the linkage rod, which is far away from the cam 6, is mounted at the axis of the driving disc 7, so that the cam 6 rotates to drive the driving disc 7 to swing through the linkage rod. An air bag 8 with a plurality of air bag cavities 81 is arranged in the air bag seat 3, an air valve 41 is arranged in the valve seat 4, an air outlet pipe 51 is arranged on the cover body 5, and the air outlet pipe 51 is communicated with the valve seat 4, so that the air bag 8 is pressed to inflate when the driving disc 7 swings, the air valve 41 is used for ventilating and sending the air outlet pipe 51 to the cover body 5, and inflation operation is realized.

As shown in fig. 2, fig. 3 and fig. 4, gasbag 8 is the gasbag body 83 that the circumference distributes on mounting disc 82 including installing mounting disc 82 and a plurality of on gasbag seat 3, gasbag chamber 81 is located on the gasbag body 83, mounting disc 82 and gasbag body 83 are elastic rubber material preparation and form, it inflates pad 71 to be equipped with a plurality of that is used for extrudeing gasbag body 83 on the driving-disc 7, inflate pad 71 and the setting of gasbag body 83 one-to-one, make each gasbag body 83 mutually independent, and inflate pad 71 with its correspondence respectively and cooperate, avoid the deformation of one of them gasbag body 83 to cause the influence to another gasbag body 83, improve the stability of carrying atmospheric pressure. Wherein, inflate pad 71 and peg graft on the gasbag body 83 bottom, and inflate and be provided with between pad 71 and the gasbag body 83 and be used for inflating the joint structure 10 of pad 71 with gasbag body 83 fixed connection to make the swing of inflating pad 71, can drive the gasbag body 83 and stretch and compress, realize the operation of aerifing. The clamping structure 10 comprises a clamping hole 101 formed in the side wall of the bottom of the air bag body 83 and two buckles 102 arranged on the side wall of the top of the inflating pad 71, the buckles 102 penetrate through the clamping holes 101 and are clamped on the outer side wall of the clamping holes 101, the two clamping holes 101 and the two buckles 102 are symmetrically arranged, when the air bag body 83 is installed, the clamping buckles penetrate through the clamping holes 101, the air bag body 83 has deformation capacity, when the air bag body passes through, the clamping holes 101 can be extruded to be enlarged, so that the buckles 102 can pass through, after the buckles 102 pass through, the air bag body 83 is restored, the buckles 102 are clamped at the outer side of the clamping holes 101, so that the inflating pad 71 and the air bag body 83 are installed, when the air bag body is disassembled, only force is applied to deform the clamping holes 101 to be enlarged, the buckles 102 can be removed, the disassembling of the inflating pad 71 and the air bag body 83 is realized, the convenience of disassembling and assembling of the inflating pad 71 and the air bag body 83 is improved, and after the two are installed, the inflating pad 71 can move to drive the air bag body 83 to move, so as to stretch and squeeze the air bag body 83 to realize the inflation operation.

As shown in fig. 2 and 3, the cross section size of the mounting disc 82 of the airbag 8 is consistent with the cross section size of the airbag seat 3, and three positioning columns 31 are uniformly arranged on the airbag seat 3 in the circumferential direction, three abdicating ports 84 which are correspondingly inserted into the positioning columns 31 are formed in the mounting disc 82, and the positioning columns 31 are aligned and inserted into the valve seats 4 and matched with the valve seats, so that the connecting bolts sequentially pass through the cover body 5 during installation, the valve seats 4, the positioning columns 31 and the airbag seat 3 and then are connected onto the shell 2 in a threaded manner, and the upper surface and the lower surface of the mounting disc 82 after installation are respectively abutted onto the valve seats 4 and the airbag seat 3, so that the mounting disc 82 is used for sealing, an additional sealing ring is not needed, the structure is simplified, and the installation and the use are convenient.

As shown in fig. 3 and 4, a plurality of air inlet holes 811 are formed at one end of the air bag cavity 81 close to the driving disc 7, a ventilation channel 711 is formed on the inflating pad 71, the inflating pad 71 is inserted into the bottom of the air bag body 83, and one end of the ventilation channel 711 close to the air inlet holes 811 is arranged in a staggered manner with the air inlet holes 811, so that air can be supplied to the air inlet holes 811 through the ventilation channel 711 during the movement of the inflating pad 71, and air pressure is supplied to the air bag cavity 81 for inflating. Wherein, the air bag cavity 81 is provided with an air inlet valve sheet 812 for controlling the unidirectional air inlet of the air inlet hole 811, the air inlet valve sheet 812 is integrally formed with the air bag body 83 and is consistent with the material of the air bag body 83, when the inflating pad 71 stretches the air bag body 83, the air pressure in the air bag cavity 81 is smaller than the air pressure of the air channel 711, the air inlet valve sheet 812 is opened, so that the air inlet hole 811 is communicated with the air channel 711, the air suction operation of the air bag body 83 is realized, when the inflating pad 71 extrudes the air bag body 83, the air inlet valve sheet 812 is attached to the bottom of the air bag cavity 81, so that the air inlet hole 811 is closed, so that the air in the air bag cavity 81 is sent to the valve seat 4 and then sent out by the cover body 5, the inflating operation is realized, the power when the inflating pad 71 swings is matched, the speed of sending the air into the air bag cavity 81 and sending out from the air bag cavity 81 can be improved, the inflating efficiency is improved, and the air in the air bag cavity 81 is completely exhausted, and the noise is reduced.

As shown in fig. 3 and 5, further, an air inlet impeller 12 is installed on an output shaft of the motor 1, an air inlet channel 21 aligned with an air inlet end of the air inlet impeller 12 is formed on the housing 2, an air outlet end of the air inlet impeller 12 is circumferentially surrounded and is respectively disposed opposite to each of the inflating pads 71, so that the motor 1 drives the cam 6 to rotate and simultaneously drives the air inlet impeller 12 to rotate, so as to send air flow into the housing 2, on one hand, the air channel 711 of the inflating pads 71 is provided with air flow, which facilitates inflating, on the other hand, a buffer air flow space is formed inside the housing 2, and heat energy generated by the swinging of the output shaft of the motor 1, the cam 6 and the driving disk 7 is cooled by the air flow, thereby protecting the structure and prolonging the service life thereof. Specifically, the air intake impeller 12 includes a rotating base plate 121, an air collecting cover 122 disposed on the rotating base plate 121, and a plurality of arc-shaped blades 123 disposed in the air collecting cover 122, an air guiding groove 124 is formed between two adjacent blades 123, the base plate 121 is provided with an air intake cavity 125 at the position of the air intake passage 21 of the casing 2, the air intake cavity 125 is communicated with the air guiding groove 124, each air guiding groove 124 penetrates through the air collecting cover 122 and is disposed at each of the inflating pads 71, so that the structure is compact, when rotating, air flow can be introduced into the guiding groove from the air intake passage 21 through the air intake cavity 125, so that the air flow is delivered to each inflating pad 71 in an aligned manner by guiding of the air guiding groove 124, which facilitates providing air flow to the ventilation passage 711 of the inflating pad 71, and increases the size of the air flow, so as to facilitate inflation operation.

As shown in fig. 3 and 4, a plurality of mounting holes 821 corresponding to the airbag bodies 83 one by one are formed on the mounting disc 82 of the airbag 8, the axial direction of the mounting holes 821 is consistent with the expansion direction of the airbag bodies 83, a movable groove 822 is formed on the inner wall of the mounting holes 821, one end of the airbag body 83 passes through the mounting holes 821 and then aligns with the driving disc 7, a movable block 831 is arranged at the other end of the airbag body, the movable block 831 is arranged in the movable groove 822 in an axial lifting manner along the mounting holes 821, and a positioning structure 9 for positioning the movable block 831 on the movable groove 822 is arranged between the movable block 831 and the mounting holes 821, so that when the movable block 831 is in a movable state, the airbag body 83 can be driven to naturally move in the mounting holes 821 in the swinging process of the driving disc 7, the airbag body 83 is not stretched or compressed at the moment, namely, an inflation effect is not provided, the airbag body 83 can be prevented from being extruded when the vehicle is stopped, and the service life of the airbag body can be prolonged, meanwhile, when the inflation quantity is required to be adjusted to be small, the corresponding number of the air bag bodies 83 can be controlled to be in a movable state according to the requirement, so that the inflation operation of a small amount of gas is provided, and the use convenience is improved; in addition, when the movable block 831 is positioned on the movable groove 822, the airbag body 83 is positioned at the mounting opening 821, and one end of the airbag body 83 far away from the movable block 831 is drawn by the driving disc 7, so that the airbag body 83 can be pressed to perform inflating operation in the swinging process of the driving disc 7. Combine in the installation of inflating pad 71 for the swing of inflating pad 71 is connected with the gasbag body 83 all the time, and the location and the release location through control location structure 9 realize inflating pad 71 to the extrusion or the linkage of the gasbag body 83, conveniently adjust control according to the demand, improve the convenience of operation.

As shown in fig. 3 and 6, in order to improve the sliding smoothness of the movable block 831, a plurality of balls 832 are rotatably disposed on the peripheral wall of the movable block 831, the balls 832 are uniformly disposed along the circumferential direction of the movable block 831, the movable groove 822 is provided with arc-shaped strips 8221 corresponding to the balls 832 one by one, when the movable block 831 moves in the movable groove 822, the balls 832 abut against the end portions of the arc-shaped strips 8221 to form point contact, so as to reduce the contact area, thereby reducing the friction force, making the sliding of the movable block 831 smoother, reducing the heat generated by friction, and protecting the service life of the airbag body 83. Wherein, form cooling air flow channel 8222 between two adjacent arc strips 8221 for the in-process that activity block 831 moved or driving-disc 7 drive the gasbag body 83 and inflate has some air current and circulates through cooling air flow channel 8222, can take away the heat between gasbag body 83 and installing port 821, and in time effective heat dissipation improves its life.

As shown in fig. 3 and 4, specifically, the positioning structure 9 includes a first magnetic attraction portion 91 disposed on the bottom of the movable block 831 and a first electromagnet 92 disposed on the bottom end of the movable slot 822, the first magnetic attraction portion 91 has a magnetic property for attracting with the first electromagnet 92, when the first electromagnet 92 is energized, the first magnetic attraction portion 91 is attracted to the first electromagnet 92, so as to position the movable block 831 at the bottom end of the movable slot 822, so that the air bag body 83 is located at a position closest to the inflating pad 71, thereby facilitating stretching and compressing the inflating pad 71 when swinging. In this embodiment, when the airbag body 83 is located at the position closest to the inflating pad 71, the inflating pad 71 aligned with the airbag body is located at the lower position of the driving disc 7, so that the airbag body 83 is compressed during the swinging process to realize the inflation operation.

As shown in fig. 3 and 4, further, a plurality of magnetic attraction portions two 93 are disposed in the middle of the movable groove 822, an electromagnet two 94 is disposed on the peripheral wall of the movable block 831, the magnetic attraction portions two 93 have magnetism for attracting with the electromagnet two 94, when the electromagnet two 94 is energized, the movable block 831 is located at the position of the corresponding electromagnet two 94, and the driving disc 7 swings to press the airbag 83 for inflation, and at this time, the corresponding inflation pad 71 is located at a high position of the driving disc 7, so that the airbag 83 is compressed during the swinging process, and the inflation operation is achieved. When the movable blocks 831 of the two airbag bodies 83 are respectively positioned at the first electromagnet 92 and the second electromagnet 94, the swing of the driving disk 7 can synchronously press the two airbag bodies 83 for inflating. Through switching the position location of the gasbag body 83 in the activity groove 822, can realize the in-process of driving-disc 7 swing round, drive two gasbag bodies 83 in step and inflate the operation, satisfy quick aerate's operation, improve greatly and aerify efficiency to can adjust according to actual demand is nimble, improve the convenience of operation and use.

As shown in fig. 3, 4 and 7, further, a terminal 11 is disposed at an end of the motor 1 away from the housing 2 so as to be connected to a power supply to supply power to the motor 1, and the terminal 11 is a capacitor terminal 11 with a widened width so as to increase the capacitance thereof, so as to absorb electrical noise through the capacitance, reduce noise and avoid interference with electronic devices. Wherein, electro-magnet 92 and two 94 of electro-magnet all are connected with circular telegram switch 95, circular telegram switch 95 is connected with binding post 11 electricity, and be used for switching circular telegram and the outage of control electro-magnet 92 and two 94 of electro-magnet, the operation end of circular telegram switch 95 is located on the casing 2 outer wall, through control circular telegram switch 95, can control electro-magnet 92 and two 94 switching circular telegrams of electro-magnet or outage simultaneously, conveniently switch the activity of the gasbag body 83 and fix a position, and control the position location of the gasbag body 83, satisfy multiple user demand, improve the convenience of its use. In this embodiment, the power switch 95 may be a button switch or a signal switch, and if the power switch is a button switch, it needs to be pressed by a user, and if the power switch is a signal switch, the signal is connected to the terminal controller 13, and the terminal controller 13 sends an operation instruction to control the power switch to be turned on or off, so that the user can operate and use the power switch more conveniently.

The working principle is as follows: when the air inflation device is used, if normal air supply is needed, the power-on switch 95 is controlled to be turned on, the electromagnets 94 are started, the movable blocks 831 of the air bag bodies 83 are all positioned in the middle of the movable groove 822, so that in the rotating process of the electric cam 6 of the motor 1 and the swinging process of the driving disc 7, the three inflation cushions 71 can be used for sequentially stretching and extruding the air bag bodies 83, the air bag bodies 83 are alternately inflated, and a large inflation amount can be achieved under the condition that the driving disc 7 rotates for one circle; if rapid inflation is needed, the power-on switch 95 is controlled to be turned on, one of the electromagnets 94 is started, the corresponding airbag body 83 is positioned in the middle of the movable groove 822, and the electromagnets 92 are started in the other mounting ports 821, so that the other airbag bodies 83 are positioned at the bottom of the movable groove 822, and therefore the high-position inflation cushion 71 and the low-position inflation cushion 71 of the driving disc 7 can synchronously drive each airbag body 83 to stretch and compress in the synchronous swinging process, and each airbag cavity 81 can synchronously inflate in the one-circle swinging process of the driving disc 7, so that the inflation speed is increased, and the rapid inflation requirement is met; if the air supply amount needs to be reduced, the corresponding number of the electrifying switches 95 are adjusted to be turned off according to the requirement of the air inflation amount, so that the corresponding number of the air bag bodies 83 can naturally move in the mounting port 821, the driving disc 7 can swing without compressing and stretching the air bag bodies 83 which naturally move, namely the air bag bodies 83 which naturally move do not provide air inflation operation, only the air bag bodies 83 which are communicated with the electrifying switches 95 are inflated in the process that the driving disc 7 swings for one circle, the air inflation amount is reduced, and the air inflation requirement with small air inflation amount is met. When the inflation volume reaches the requirement to shut down the miniature electric air pump, each power-on switch 95 is powered off, so that each air bag body 83 naturally moves in the mounting port 821, and the deflection driving disc 7 cannot extrude the air bag body 83, so that the service life of the air bag body is prolonged.

Through the technical scheme, the air bag 83 can be in a normal state and not extruded in a shutdown state, and a corresponding number of air bag 83 can be selected for inflation according to inflation requirements, so that the variable inflation requirements are met, and the convenience in use is improved.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.