CN214464815U

CN214464815U - Miniature air pump

Info

Publication number: CN214464815U
Application number: CN202023043912.7U
Authority: CN
Inventors: 戚付生; 刘杰; 伍开贵; 胡凯
Original assignee: Guangdong Shiqi Manufacturing Co ltd
Current assignee: Guangdong Shiqi Manufacturing Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-10-22
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses a miniature air pump, including casing, pendulum rod and motor. The casing is internally provided with a bag body, the bag body separates the interior of the casing into an air inlet chamber and an air pumping chamber which are arranged at intervals, the casing is further provided with an air outlet communicated with the air pumping chamber, a bag cavity of the bag body is arranged between the air inlet chamber and the air pumping chamber and is communicated with the air pumping chamber, and the bag body is further provided with a ventilation flap positioned in the bag cavity. The swing rod is provided with a connecting part which is accommodated in the bag cavity, the connecting part is provided with a pump air hole which is respectively communicated with the air inlet cavity and the bag cavity, the connecting part is also provided with an annular boss which is arranged around the periphery of the pump air hole, and the ventilating valve is abutted against the annular boss to block the pump air hole. The motor is in transmission connection with the swing rod through a transmission mechanism and is used for driving the swing rod to swing. The connecting sealing performance of the ventilation valve of the air pump is improved, so that the air pump is more stable during air pumping.

Description

Miniature air pump

Technical Field

The utility model relates to an air pump technical field especially relates to miniature air pump.

Background

The existing miniature air pump has the defects of unstable pumping air, insufficient pumping air quantity and the like, and the main reason is that the movable part is not sealed tightly by the ventilation flap, namely, when the miniature air pump is inflated, air enters from the pumping air hole of the movable part and extrudes the ventilation flap to open the ventilation flap so as to open an air flow path; however, in the conventional micro air pump, due to a machining error or a structure, the movable part is not tightly sealed by the ventilation flap, so that the conventional micro air pump has the defects of unstable air pumping, insufficient air pumping amount and the like.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a miniature air pump, which improves the connection sealing performance of the ventilation valve of the air pump, thereby ensuring that the air pump is more stable when pumping air.

The purpose of the utility model is realized by adopting the following technical scheme:

a miniature air pump comprising:

the air pump comprises a shell, wherein a bag body is arranged in the shell, the bag body divides the interior of the shell into an air inlet chamber and an air pumping chamber which are arranged at intervals, the shell is also provided with an air outlet communicated with the air pumping chamber, a bag cavity of the bag body is arranged between the air inlet chamber and the air pumping chamber, the bag cavity is communicated with the air pumping chamber, and the bag body is also provided with a ventilation flap positioned in the bag cavity;

the swing rod is provided with a connecting part which is accommodated in the bag cavity, the connecting part is provided with a pump air hole which is respectively communicated with the air inlet cavity and the bag cavity, the connecting part is also provided with an annular boss which is arranged around the periphery of the pump air hole, and the ventilation flap is abutted against the annular boss so as to block the pump air hole;

and the motor is in transmission connection with the swing rod through a transmission mechanism and is used for driving the swing rod to swing.

Furthermore, the bag cavity is communicated with the air pumping chamber through an air pumping channel of the shell, and the shell is connected with a one-way valve flap which is elastically plugged and connected with the air pumping channel; the pumping chamber is communicated with the air outlet.

Further, the pumping chamber comprises a gas collecting chamber and a horizontal gas flow passage, and the gas collecting chamber, the horizontal gas flow passage and the gas outlet are communicated in sequence; the bag cavity is communicated with the gas collection cavity of the pumping cavity through the pumping channel of the shell, and the one-way valve clack is accommodated in the gas collection cavity.

Furthermore, two gas collecting chambers and two horizontal gas channels are arranged, and the two gas collecting chambers are respectively communicated with the gas outlet through one horizontal gas channel; the two air collecting chambers are arranged in a centrosymmetric manner by taking the axis of the shell as the center.

Furthermore, the motor is arranged right below the shell, the transmission mechanism comprises an eccentric wheel in driving connection with the motor, and a connecting rod with the bottom end connected to the eccentric wheel, and the top end of the connecting rod is connected with the swing rod; air inlet chamber, bag chamber, pump air chamber overlap in order along the high direction of plumb and arrange, on the casing with the utricule butt encloses the conch wall of bag chamber does the roof of bag chamber, the roof is sunken upwards in order to form and encircles the annular groove of stepping down of the circumference extension of the axis of eccentric wheel, the annular groove of stepping down is used for dodging the utricule.

Further, the shell comprises a lower shell, an upper shell, a base and an upper cover which are sequentially overlapped and arranged along the vertical height direction; the top of the bag body is positioned between the upper shell and the base and is extruded by the upper shell and the base; the pumping channel is arranged on the base.

Furthermore, the top of the upper shell is provided with a positioning groove, the top of the bag body is matched with the positioning groove and is contained in the positioning groove, and the bottom of the bag body penetrates through the upper shell downwards.

Further, the upper cover covers the base to form the pumping chamber, the horizontal side wall of the pumping chamber belongs to a part of the upper cover, the top of the upper cover protrudes upwards to form an air outlet nozzle, and the air outlet nozzle is arranged at the air outlet.

Furthermore, the miniature air pump also comprises a plurality of fixing screws, and the screws sequentially penetrate through the upper cover, the base, the upper shell and the lower shell.

Further, the air inlet of the shell is arranged on the lower shell and located at the joint of the motor and the lower shell, and the air inlet extends along the horizontal direction until being communicated with the air inlet cavity.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the connecting part of the swing rod is accommodated in the capsule cavity of the capsule body, so that the connecting part of the swing rod is extruded by the elasticity of the capsule body, and the connecting part between the connecting part and the capsule body is sealed.

2. Through setting up annular boss at connecting portion, during machining, only need guarantee that the terminal surface of annular boss have high-quality plane degree and roughness can, only need the terminal surface of finish machining annular boss promptly, can improve the leakproofness of the flap to the pump gas pocket of ventilating to make the air pump more stable when the pump gas.

Drawings

FIG. 1 is a schematic structural view of a micro air pump according to the present invention; wherein the dotted line is a gas flow diagram;

FIG. 2 is an exploded view of the micro air pump shown in FIG. 1;

FIG. 3 is an assembly view of the micro air pump shown in FIG. 2;

fig. 4 is a schematic diagram of the position relationship between the bladder and the swing link shown in fig. 1;

FIG. 5 is another perspective view of FIG. 4;

fig. 6 is a schematic structural view of the upper cover shown in fig. 1, wherein a dotted line is a gas flow diagram.

In the figure: 1. a housing; 11. an air intake chamber; 12. a pumping chamber; 121. a gas collection chamber; 122. a horizontal gas flow channel; 13. an air outlet; 14. an annular abdicating groove; 15. a lower case; 16. an upper shell; 161. positioning a groove; 17. a base; 171. a pumping channel; 18. an upper cover; 181. an air outlet nozzle; 19. an air inlet; 2. a capsule body; 21. a capsule cavity; 22. a ventilation flap; 3. a swing rod; 31. a connecting portion; 311. a pump air hole; 312. an annular boss; 4. a motor; 5. a transmission mechanism; 51. an eccentric wheel; 52. a connecting rod; 6. a one-way valve flap; 7. and (4) screws.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used herein, "vertical," "horizontal," "left," "right," and similar expressions are for purposes of illustration only and do not represent the only embodiments.

Unless defined otherwise, all 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. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1-3 show a micro air pump according to a preferred embodiment of the present invention, which mainly includes a housing 1, a swing rod 3 and a motor 4.

Install utricule 2 in the casing 1, utricule 2 will the inside partition of casing 1 becomes air inlet chamber 11 and the pump air chamber 12 that mutual interval set up, casing 1 still seted up with the gas outlet 13 of pump air chamber 12 intercommunication, the bag cavity 21 of utricule 2 is established air inlet chamber 11 with between the pump air chamber 12, bag cavity 21 with pump air chamber 12 intercommunication, utricule 2 still is equipped with and is located the flap 22 of ventilating in the bag cavity 21 (see fig. 5).

The swing link 3 has a connecting portion 31 accommodated in the bag cavity 21, the connecting portion 31 is provided with a pump air hole 311 respectively communicating the air intake chamber 11 and the bag cavity 21, the connecting portion 31 is further provided with an annular boss 312 (see fig. 4) arranged around the periphery of the pump air hole 311, and the ventilation flap 22 abuts against the annular boss 312 to seal the pump air hole 311.

The motor 4 is in transmission connection with the swing rod 3 through a transmission mechanism 5 and is used for driving the swing rod 3 to swing.

When the air pump is used for inflating, the motor 4 drives the transmission mechanism 5, and the transmission mechanism 5 drives the swing rod 3 to swing, so that the bag body 2 is compressed or stretched, and the air pump is realized.

By accommodating the connecting portion 31 of the swing link 3 in the cavity 21 of the capsule body 2, the connecting portion 31 of the swing link 3 is pressed by the capsule body 2 by means of the elasticity of the capsule body 2, so that the connecting portion between the connecting portion 31 and the capsule body 2 is sealed. Through setting up annular boss 312 at connecting portion 31, during machining, only need guarantee that the terminal surface of annular boss 312 has high-quality plane degree and roughness can, only need finish machining annular boss 312's terminal surface promptly, can improve the leakproofness of the flap 22 of ventilating to pump gas hole 311 to make the air pump more stable when the pump gas.

As a further preferred embodiment: referring to fig. 1 and 2, the air bag cavity 21 is communicated with the pumping chamber 12 through a pumping passage 171 of the housing 1, and the housing 1 is connected with a one-way valve flap 6 elastically plugging and connecting with the pumping passage 171; the pumping chamber 12 communicates with the outlet port 13. Through addding check valve clack 6 and carrying out the non return to gas to improve the effect of pump gas, can understand, at this moment, as gas from bag chamber 21 crowded into pump gas chamber 12, along with the closing of check valve clack 6, the atmospheric pressure of pump gas chamber 12 risees, and gas can only discharge to gas outlet 13.

As a further preferred embodiment: referring to fig. 1 and 6, the pumping chamber 12 includes a gas collecting chamber 121 and a horizontal gas flow passage 122, and the gas collecting chamber 121, the horizontal gas flow passage 122 and the gas outlet 13 are sequentially communicated; the air collecting chamber 121 of the air pumping chamber 12 is communicated with the air pocket 21 through an air pumping passage 171 (see fig. 2) of the housing 1, and the check valve flap 6 is accommodated in the air collecting chamber 121. With such an arrangement, when the one-way valve flap 6 is opened, the smoothness of the air outlet 13 is not affected by excessive deformation because the one-way valve flap 6 is located in the air collection chamber 121, and the smoothness of the air outlet 13 can be ensured by performing transition through the horizontal air flow passage 122.

As a further preferred embodiment: two gas collecting chambers 121 and two horizontal gas flow channels 122 are arranged, and the two gas collecting chambers 121 are respectively communicated with the gas outlet 13 through one horizontal gas flow channel 122; the two gas collecting chambers 121 are arranged in a central symmetry with the axis of the housing 1 as the center. With this arrangement, when one of the air collecting chambers 121 fails, it is ensured that the micro air pump can also temporarily operate for a period of time without being directly damaged.

As a further preferred embodiment: the motor 4 is installed right below the shell 1, the transmission mechanism 5 comprises an eccentric wheel 51 in driving connection with the motor 4, and a connecting rod 52 with the bottom end connected to the eccentric wheel 51, and the top end of the connecting rod 52 is connected with the swing rod 3; the air inlet cavity 11, the bag cavity 21 and the air pumping cavity 12 are sequentially arranged in an overlapped mode in the vertical height direction, the shell 1 is abutted to the bag body 2 and is enclosed to form the shell wall of the bag cavity 21, the top wall is upwards sunken to form an annular yielding groove 14 which surrounds the circumferential extension of the axis of the eccentric wheel 51, and the annular yielding groove 14 is used for yielding the bag body 2. By the arrangement, the height of the shell 1 can be compressed, the swing rod 3 is abduced through the annular abducent groove 14, and the swing of the swing rod 3 can be prevented from structurally interfering with the shell 1.

As a further preferred embodiment: the housing 1 includes a lower case 15, an upper case 16, a base 17, and an upper cover 18, which are sequentially stacked in the vertical height direction. The top of the capsule 2 is positioned between the upper shell 16 and the base 17 and is pressed by the upper shell 16 and the base 17, so that the connection of the capsule 2 is ensured to have high sealing performance; the pumping passage 171 is provided in the base 17.

As a further preferred embodiment: referring to fig. 2, in order to improve the sealing performance of the capsule 2, a positioning groove 161 is provided at the top of the upper shell 16, the top of the capsule 2 is fitted into the positioning groove 161 and is accommodated in the positioning groove 161, and the bottom of the capsule 2 passes through the upper shell 16 downward.

As a further preferred embodiment: the upper cover 18 covers the base 17 to form the pumping chamber 12, the horizontal side wall of the pumping chamber 12 belongs to a part of the upper cover 18, the top of the upper cover 18 protrudes upwards to form an air outlet 181, and the air outlet 13 is arranged on the air outlet 181. Is connected with an external air bag through the air outlet nozzle 181 so as to ensure a reliable connection relationship.

As a further preferred embodiment: in order to facilitate the assembly of the micro air pump, the micro air pump further comprises a plurality of fixing screws 7, and the screws 7 sequentially penetrate through the upper cover 18, the base 17, the upper shell 16 and the lower shell 15.

As a further preferred embodiment: in order to improve the smoothness of air intake, the air inlet 19 of the housing 1 is arranged on the lower shell 15 and located at the joint of the motor 4 and the lower shell 15, and the air inlet 19 extends along the horizontal direction until being communicated with the air intake chamber 11.

The utility model discloses a miniature air pump is concrete during operation, under the drive of motor 4, eccentric wheel 51 rotates and drives the bottom rotation of connecting rod 52, and the bottom swing of connecting rod 52 is followed at the top of connecting rod 52 for pendulum rod 3 makes iterative swing motion, thereby makes connecting portion 31 in turn between rising and decline, and then makes the utricule 2 of holding connecting portion 31 compress repeatedly and stretch, thereby changes the volume of utricule 2 in order to realize the pump gas. As shown in fig. 1, when the air enters the air inlet chamber 11 from the air inlet 19, the volume of the bag body 2 is expanded to reduce the air pressure of the bag cavity 21, so that the air pressure of the air inlet chamber 11 is higher than the air pressure of the bag cavity 21, the ventilation flap 22 is opened, when the air pressure of the bag cavity 21 is equal to the air pressure of the air inlet chamber 11, the ventilation flap 22 is closed, the bag body 2 is pressed along with the swing of the swing rod 3, the air pressure of the bag cavity 21 is increased to push the one-way valve flap 6 upwards, the air enters the air pumping chamber 12, when the air pressure of the air pumping chamber 12 is equal to the air pressure of the bag cavity 21, the one-way valve flap 6 is closed, and the air is filled into the external air bag through the air outlet 13; under the swing of the swing rod 3, the volume of the capsule cavity 21 is expanded again, and the air pressure is reduced again, and the process is repeated.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. Miniature air pump, its characterized in that includes:

2. The miniature air pump of claim 1 wherein said bladder and said pumping chamber are in communication via a pumping channel of said housing, said housing being connected to a one-way flap in resilient sealing connection with said pumping channel; the pumping chamber is communicated with the air outlet.

3. The micro air pump according to claim 2, wherein the pumping chamber comprises a gas collecting chamber and a horizontal gas flow passage, and the gas collecting chamber, the horizontal gas flow passage and the gas outlet are sequentially communicated; the bag cavity is communicated with the gas collection cavity of the pumping cavity through the pumping channel of the shell, and the one-way valve clack is accommodated in the gas collection cavity.

4. The micro air pump according to claim 3, wherein there are two of the air collecting chambers and the horizontal air flow passages, and the two air collecting chambers are respectively communicated with the air outlet through one of the horizontal air flow passages; the two air collecting chambers are arranged in a centrosymmetric manner by taking the axis of the shell as the center.

5. The miniature air pump according to claim 2, wherein said motor is mounted directly below said housing, said transmission mechanism comprises an eccentric wheel drivingly connected to said motor, and a connecting rod having a bottom end connected to said eccentric wheel, and a top end connected to said swing link; air inlet chamber, bag chamber, pump air chamber overlap in order along the high direction of plumb and arrange, on the casing with the utricule butt encloses the conch wall of bag chamber does the roof of bag chamber, the roof is sunken upwards in order to form and encircles the annular groove of stepping down of the circumference extension of the axis of eccentric wheel, the annular groove of stepping down is used for dodging the utricule.

6. The micro air pump according to claim 2, wherein the housing includes a lower housing, an upper housing, a base, and an upper cover, which are sequentially stacked in a vertical height direction; the top of the bag body is positioned between the upper shell and the base and is extruded by the upper shell and the base; the pumping channel is arranged on the base.

7. The micro air pump according to claim 6, wherein a positioning groove is formed at the top of the upper casing, the top of the capsule is fitted into the positioning groove and is accommodated in the positioning groove, and the bottom of the capsule passes through the upper casing downwards.

8. The micro air pump according to claim 6, wherein the upper cover covers the base to form the pumping chamber, a horizontal side wall of the pumping chamber is a part of the upper cover, a top of the upper cover protrudes upward to form an air outlet nozzle, and the air outlet is provided at the air outlet nozzle.

9. The micro air pump according to claim 6, further comprising a plurality of fixing screws, wherein the screws sequentially pass through the upper cover, the base, the upper case and the lower case.

10. The miniature air pump of claim 6 wherein said inlet port of said housing is located at said lower housing at the junction of said motor and said lower housing, said inlet port extending horizontally until communicating with said inlet chamber.