CN216381761U - Air pump overflow noise reduction device, miniature air pump and pneumatic adjusting system - Google Patents

Abstract

The application provides device, miniature air pump and pneumatic governing system of making an uproar falls in air pump overflow, includes: a gas distribution layer; the silencing upper cover is provided with at least one overflow through hole and at least one air outlet; the exhaust passage is positioned inside the cavity of the upper silencing cover, and gas output by the gas distribution layer enters the exhaust passage and is communicated with an external gas device through the gas outlet; the mounting through hole is positioned on the silencing upper cover and is provided with an air inlet port and an air outlet port, and the air inlet port is communicated with the exhaust channel; the overflow silencing channel is also positioned in the cavity of the silencing upper cover, one end of the overflow silencing channel is communicated with the air leakage port, and the other end of the overflow silencing channel is communicated with the external gas environment through the overflow through hole; and the overflow valve is used for controlling the communication or the closing of the exhaust channel and the overflow silencing channel. This application makes overflow arrangement further release, and the gas of overflow simultaneously is discharged through the labyrinth passage of overflow path, further reduces the air current noise.

Description

Air pump overflow noise reduction device, miniature air pump and pneumatic adjusting system

Technical Field

The application belongs to the technical field of air pumps, and in particular relates to an air pump overflow noise reduction device, a miniature air pump and a pneumatic adjusting system.

Background

At present, functional components on most vehicles are all driven by an air pump, but in the air supply process of the air pump, when the air supply element reaches the maximum pressure of the pump, the air pump can generate a phenomenon of noise increase due to pressure build-up, and in order to solve the problem, an overflow device can be additionally arranged on the air pump, but the airflow noise during overflow is too large, and the airflow sound can cause discomfort for a user.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defects or shortcomings in the prior art, the present application aims to provide an air pump overflow noise reduction device, a micro air pump and a pneumatic adjustment system.

In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

in a first aspect, an air pump overflow noise reduction device comprises: a gas distribution layer; the silencing upper cover is provided with at least one overflow through hole and at least one air outlet; the exhaust passage is positioned inside the cavity of the upper silencing cover, and gas output by the gas distribution layer enters the exhaust passage and is communicated with an external gas device through the gas outlet; the mounting through hole is positioned on the silencing upper cover and is provided with an air inlet port and an air outlet port, and the air inlet port is communicated with the exhaust channel; the overflow silencing channel is also positioned in the cavity of the silencing upper cover, one end of the overflow silencing channel is communicated with the air leakage port, and the other end of the overflow silencing channel is communicated with the external gas environment through the overflow through hole; the overflow valve is positioned in the mounting through hole, is provided with an air inlet end matched with the air inlet port and an air leakage end matched with the air leakage port, and is used for controlling the communication or the closing of the exhaust channel and the overflow silencing channel.

According to the technical scheme provided by the embodiment of the application, the overflow silencing passage is a single cavity; or, the overflow silencing passage is a zigzag and winding gas path passage; or, the overflow silencing passage is a labyrinth-shaped gas passage.

According to the technical scheme provided by the embodiment of the application, silencing cotton is arranged in the overflow silencing channel.

According to the technical scheme provided by the embodiment of the application, the overflow valve comprises a sealing ring, a valve core, a spring and an end cover which are sequentially matched and connected along a first direction; wherein,

the side wall of the valve core is annularly provided with a clamping piece, the sealing ring is sleeved on the valve core and is abutted against one end of the clamping piece, the spring is sleeved on the valve core, and one end of the spring is abutted against the other end of the clamping piece;

the end cover is hermetically arranged in the mounting through hole, and the other end of the spring is abutted with the end cover;

the first direction is relatively close to the gas distribution layer to relatively far away from the silencing upper cover.

According to the technical scheme provided by the embodiment of the application, the air inlet port is positioned at the bottom of the mounting through hole or on the peripheral side wall of the bottom; the air leakage port is located on the peripheral side wall of the mounting through hole.

According to the technical scheme provided by the embodiment of the application, at least one groove structure is arranged on the peripheral side wall of the clamping piece; the outer side wall of the end cover is annularly provided with a clamping brim, and the clamping brim is clamped with the mounting through hole.

According to the technical scheme provided by the embodiment of the application, the exhaust channel is a winding or labyrinth air path channel, the starting end of the exhaust channel is an air inlet cavity, and the air inlet cavity is communicated with the gas output by the gas distribution layer.

According to the technical scheme provided by the embodiment of the application, the upper silencing cover and the gas distribution layer are in sealed connection, preferably in ultrasonic welding connection.

In a second aspect, a miniature air pump comprises the air pump overflow noise reduction device, wherein one end of the air distribution layer is connected with a plunger of the air pump, and the other end of the air distribution layer is connected with the silencing upper cover.

In a third aspect, a pneumatic adjusting system for a car seat comprises the above-mentioned micro air pump, and further comprises at least one air bag body, a valve body, and an air pipe, wherein the air of the micro air pump is supplied to the air bag body through the air pipe and the valve body, and the air bag body is installed in the car seat.

The application has the following beneficial effects:

the application device of making an uproar falls in air pump overflow cover overflow, installed overflow valve and overflow passageway additional on current overflow arrangement's amortization upper cover, when the inside gas pressure of exhaust passage too big the back-open overflow valve gets into the overflow passageway and discharges to the air from the exhaust hole, the setting up of overflow valve makes overflow arrangement further release pressure, partial pressure unloads, prevent that gas pressure is too big in the amortization upper cover, the gas of on the other hand overflow passes through the labyrinth passage discharge of overflow passageway, further reduce the air current noise. After the components of the overflow valve are assembled in sequence, the overflow valve begins to overflow when the pressure reaches the overflow pressure, the overflowed gas cannot be directly discharged into the air but is discharged into the air through the vent hole after passing through a long and narrow tortuous channel, and the noise generated by the air flow during the overflow can be eliminated by the long and narrow tortuous channel.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural diagram of an overflow noise reduction device according to the present application;

FIG. 2 is a front view of the silencing top cover according to the present application;

FIG. 3 is a schematic view of the cross-sectional structure A-A of FIG. 2 of the present application;

FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 2 of the present application;

FIG. 5 is a schematic view of a main sectional structure of a silencing upper cover in a closed state of an overflow valve;

FIG. 6 is a schematic view of a main sectional structure of a silencing upper cover in an open state of an overflow valve;

FIG. 7 is a schematic top view of the silencing top cover of the present application;

FIG. 8 is a schematic cross-sectional view of the present application taken along line C-C of FIG. 7;

FIG. 9 is a schematic cross-sectional view taken along line D-D of FIG. 7 of the present application;

FIG. 10 is a schematic view of the cross-sectional structure E-E of FIG. 8 of the present application;

FIG. 11 is a schematic view of the cross-sectional F-F structure of FIG. 8 of the present application;

FIG. 12 is a rear view of the silencing top cover according to the present application;

FIG. 13 is a schematic view of the cross-sectional structure G-G of FIG. 12;

fig. 14 is a schematic view of the installation structure of the noise reduction cotton.

Description of reference numerals:

1. a silencing upper cover; 11. a first card slot; 12. a groove;

2. mounting a through hole; 21. an air inlet port; 22. a venting port; 23. a first diameter changing part; 24. A second diameter changing part;

3. an overflow valve; 301. an air inlet end; 302. a gas release end;

31. an end cap; 32. a spring; 33. a valve core; 34. a seal ring;

331. a fastener;

4. an overflow silencing channel; 5. an overflow through hole; 6. a gas supply nozzle;

7. an exhaust passage; 71. an air inlet cavity; 72. an air outlet;

8. a gas distribution layer; 81. a second card slot; 82. a convex brim; 83. an air inlet;

9. silencing cotton.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are illustrative of the relevant application and are not limiting of the application. It should be noted that, for the convenience of description, only the portions relevant to the application are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

An air pump overflow noise reduction device comprising: a gas distribution layer 8; the upper silencing cover 1 is provided with at least one overflow through hole 5 and at least one air outlet 72; the exhaust passage 7 is positioned inside the cavity of the silencing upper cover 1, and the gas output by the gas distribution layer 8 enters the exhaust passage 7 and is communicated with an external gas device through the gas outlet 72; a mounting through hole 2 located on the silencing upper cover 1, the mounting through hole 2 having an air inlet port 21 and an air outlet port 22, the air inlet port 21 communicating with the exhaust passage 7; the overflow silencing channel 4 is also positioned in the cavity of the silencing upper cover 1, one end of the overflow silencing channel is communicated with the air leakage port 22, and the other end of the overflow silencing channel is communicated with the external gas environment through the overflow through hole 5; and the overflow valve 3 is positioned in the installation through hole 2, is provided with an air inlet end 301 matched and connected with the air inlet port 21 and an air outlet end 302 matched and connected with the air outlet port 22, and is used for controlling the communication or the closing of the exhaust channel 7 and the overflow silencing channel 4.

Referring specifically to fig. 1-4, the air outlet 72 is used for supplying air and is connected to an external air supply device. Preferably, the air outlet 72 is connected with an air supply nozzle 6, and the air nozzle structure of the air supply nozzle 6 is conveniently connected with an external air device. When the external air-using device or the air-using element reaches the maximum pressure of the pump, the air pump generates a phenomenon of noise increase due to the pressure build-up. This application has set up installation through-hole 2 on amortization upper cover 1, has set up simultaneously with the exhaust passage 7 of outside gas device intercommunication and with the overflow amortization passageway 4 of outside gaseous environment intercommunication. When the gas enters the exhaust channel 7 of the upper silencing cover 1 and is exhausted through the gas outlet 72, when the gas pressure is too high, the gas can push the overflow valve 3 open to enter the overflow silencing channel 4, and the overflow valve 3 plays a role in controlling the communication or closing of the exhaust channel 7 and the overflow silencing channel 4 and adjusting the maximum output of the air pump. The detailed process refers to fig. 4, wherein the solid line arrows in fig. 4 indicate the air flow direction of the exhaust passage 7, and the broken line arrows indicate the air flow direction of the overflow silencing passage 4. When the air pressure in the exhaust channel 7 is higher than the safety value of the overflow valve 3, the overflow valve 3 is opened, the air inlet end 301 is far away from the air inlet port 21, the air outlet end 302 is far away from the air outlet port 22, the exhaust channel 7 is communicated with the overflow silencing channel 4, and the air in the exhaust channel 7 is discharged to the external environment through the air inlet port 21, the air outlet port 22, the silencing overflow channel 4 and the overflow through hole 5; when the atmospheric pressure in the exhaust passage 7 is less than during the safe value of overflow valve 3, overflow valve 3 closed, inlet end 301 with inlet port 21 is pressed close to, lose heart 302 with it is far pressed close to lose heart port 22, and exhaust passage 7 and overflow amortization passageway 4 are closed, and exhaust passage 7 is isolated with amortization overflow passage 4, overflow through-hole 5 gas circuit. When the pressure is overlarge, a part of gas enters the overflow channel and is discharged through the overflow through hole 5, and the noise generated by the overlarge pressure is further reduced. The speed and pressure of the gas after passing through the overflow silencing channel 4 are reduced, and then the gas is discharged to the external environment through the overflow through hole 5, so that the effect of reducing the noise of the overflow gas flow is realized.

Preferably, the overflow silencing passage 4 is a single cavity; or, the overflow silencing passage 4 is a zigzag and winding gas path passage; or, the overflow silencing passage 4 is a labyrinth-shaped gas passage.

Specifically, in an embodiment of the present application, as shown in fig. 3 and 4, the overflow silencing passage 4 is of a labyrinth type, and the overflow through hole 5 is relatively far away from the communication between the overflow passage and the exhaust passage, and the narrow and long tortuous passage will eliminate the noise generated by the air flow during overflow.

Preferably, a silencing cotton 9 is arranged in the overflow silencing passage 4.

Specifically, as shown in fig. 11, 13, and 14, the noise reduction cotton 9 has a noise reduction function, which further improves the noise reduction effect described in the present application and also has a foreign matter prevention function.

In a preferred embodiment of the present application, the sound-absorbing cotton 9 is a noise-reducing sponge or a foreign-object-preventing sponge.

Preferably, the overflow valve 3 comprises a sealing ring 34, a valve core 33, a spring 32 and an end cover 31 which are sequentially matched along a first direction; the side wall of the valve core 33 is annularly provided with a clamping piece 331, the sealing ring is sleeved on the valve core 33 and is abutted against one end of the clamping piece 331, and the spring 32 is sleeved on the valve core 33 and is abutted against the other end of the clamping piece 331; the end cover 31 is hermetically installed in the installation through hole 2, and the other end of the spring 32 is abutted with the end cover 31; the first direction is a direction relatively close to the gas distribution layer 8 to a direction relatively far away from the silencing upper cover 1.

Referring to fig. 6, fig. 6 is a schematic structural diagram of an open state of the relief valve, when the gas pressure inside the exhaust passage is too high, the gas pushes against the sealing ring 34 of the relief valve 3 to move toward the end cover, so that the clamping member 331 pushes against the spring 32 to contract, and drives the valve core 33 to move toward the end cover, and the gas enters the installation through hole 2 from the exhaust passage 7 and enters the gas release port 22 from the gas inlet port 21 of the installation through hole 2, and further enters the overflow silencing passage 4 communicated therewith, thereby achieving the effects of pressure relief and noise reduction; as shown in fig. 5, fig. 5 is a schematic structural diagram of the closed state of the relief valve, when the gas pressure is normal, the spring 32 is reset, the valve core 33 moves in the direction away from the end cover, and the exhaust passage 7 and the relief silencing passage 4 are not communicated under the combined action of the elastic force of the spring 32 and the sealing ring 34.

Specifically, in an embodiment of the present application, the end cap 31 is provided with a cavity in a direction relatively far away from the sound-deadening upper cap 1, and one end of the spring 32 extends into the cavity. The cavity provides a space for the spring 32 to contract and expand. The design of the sealing ring 34 enables the overflow valve 3 to be tightly pressed and in interference fit with the installation through hole 2, and when the pump body works normally and the pressure of gas generated by the pump body does not exceed the set value of the overflow valve, gas leakage cannot be generated from the position of the overflow valve 3.

Preferably, the air inlet port 21 is located at the bottom or on the bottom peripheral side wall of the mounting through hole 2; the air leakage port 22 is located on the peripheral side wall of the mounting through hole 2.

In one embodiment of the present application, as shown in fig. 5 and 6, the inlet port 21 is located at the bottom of the mounting through-hole 2 to facilitate the overpressure gas of the exhaust channel 7 to enter the overflow channel. The air release port 22 is located on the peripheral side wall of the mounting through hole 2, so that the gas discharged from the exhaust channel 7 can be conveniently discharged into the overflow silencing channel 4.

Specifically, the air inlet port 21 may also be located on the peripheral side wall of the mounting through hole 2, so as to facilitate the exhaust of the exhaust channel.

Preferably, the retainer 331 is formed integrally with the valve body 33.

Specifically, the integrally formed clip 331 and the valve element 33 are convenient to install and are not easy to fall off.

Preferably, the peripheral side wall of the clip 331 is provided with at least one groove structure.

As shown in fig. 5-6, the groove structure of the catch 331 facilitates airflow therethrough. Specifically, the clearance between the clamping piece 331 and the installation through hole 2 can be as small as possible, and the groove structure is used as a path for gas overflow, so that the shaking amount of the valve core in the overflow action process is reduced. Preferably, the groove structure is in a step shape, so that air flow can pass through the overflow valve 3 conveniently when the overflow valve is opened.

Preferably, the mounting through hole 2 has a first diameter-changing part 23 and a second diameter-changing part 24 arranged along a first direction; wherein, the first diameter-changing part 23 has a conical surface with a diameter gradually increasing along the first direction.

Specifically, the first direction is a direction relatively close to the gas distribution layer 8 to a direction relatively far from the silencing upper cover 1. Referring to fig. 5 or fig. 6 specifically, the first reducing portion 23 facilitates the connection between one end of the valve core 33 and the clamping member 331 and the installation through hole 2, and the conical surface makes the connection between the sealing ring 34 and the installation hole 2 tighter and prevents air leakage. The second reducing portion 24 facilitates the connection between the clamping member 331 and the valve core 33, and facilitates the gas to overflow and enter the overflow silencing passage 4 when the overflow valve 3 is in an open state, i.e., when the overflow silencing passage 4 is communicated with the exhaust passage 7.

Preferably, the outer side wall of the end cover 31 is annularly provided with a clamping brim, and the clamping brim is connected with the mounting through hole 2 in a clamping manner.

Specifically, the overflow valve 3 and the silencing upper cover 1 are connected and fastened and are not easy to fall off.

Preferably, the exhaust passage 7 is a meandering or labyrinth air passage, and the starting end thereof is an air inlet chamber 71, and the air inlet chamber 71 is communicated with the gas output by the gas distribution layer 8.

Specifically, as shown in fig. 3 and 4, the gas is noise-reduced through the zigzag or labyrinth exhaust passage 7 and then led to the external air device through the gas outlet 72.

Specifically, an air inlet 83 is arranged on the air distribution layer 8, and the air inlet 83 corresponds to the air inlet cavity 71. As shown in fig. 1, the gas distribution layer 8 collects gas from the gas inlet 83 into the gas inlet chamber 71 of the silencing upper cover 1, and enters the gas outlet channel 7 through the gas inlet chamber 71.

Preferably, the sound-deadening upper cover 1 and the gas distribution layer 8 are hermetically connected, preferably ultrasonically welded.

Specifically, the sealing connection between the silencing upper cover 1 and the gas distribution layer 8 ensures that no gas leaks between the two. The ultrasonic welding connection is more stable, firm and durable.

In this application embodiment, the lateral wall of amortization upper cover 1 is equipped with first draw-in groove 11, the lateral wall is equipped with second draw-in groove 81 around the distribution layer 8, first draw-in groove 11 aligns the setting with second draw-in groove 81 and connects this device joint on the air pump.

Specifically, as shown in fig. 1, 2 and 7, the first locking groove 11 and the second locking groove 81 facilitate quick alignment and installation of the air distribution layer 8 and the noise reduction upper cover 1, and are used for locking the device on the air pump.

In a preferred embodiment of the present invention, the side wall of the sound-deadening upper cover 1 is provided with a groove 12 recessed in a direction away from the gas distribution layer 8, and the side wall of the gas distribution layer 8 is provided with a convex brim 82 clamped with the groove 12.

Specifically, the groove 12 and the convex eaves 82 facilitate quick alignment and installation of the air distribution layer 8 and the noise reduction upper cover 1, and work efficiency is improved.

The miniature air pump comprises the air pump overflow noise reduction device, one end of the air distribution layer 8 is connected with a plunger of the air pump, and the other end of the air distribution layer is connected with the silencing upper cover 1.

Referring to fig. 4 and fig. 7-13, the air inlet chamber 71 is connected to the air inlet 83, and the air enters the silencing upper cover 1; the air outlet 72 communicates with the air supply nozzle 6, from which the air exits the sound-deadening upper cover 1 and enters the air supply element. The air inlet cavity 71 and the air outlet 72 are close to each other, but are communicated through the long and narrow labyrinth type exhaust passage 7, so that the noise of the air pump is reduced.

The utility model provides a pneumatic governing system of car seat, includes the above a miniature air pump still includes at least one gasbag body, valve body, trachea, the gasbag body is supplied with via trachea, valve body to the gas of miniature air pump, the gasbag body is installed in car seat.

Specifically, pneumatic control on most vehicles at present all adopts the air pump drive, the application car seat pneumatic control system the miniature air pump that contains the air current and fall the device of making an uproar has adopted, effectively reduces the noise in the air pump use, and then provides the environment of comfortable silence relatively for the driver.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the application referred to in the present application is not limited to the embodiments with a particular combination of the above-mentioned features, but also encompasses other embodiments with any combination of the above-mentioned features or their equivalents without departing from the scope of the application. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (11)

1. The utility model provides an air pump overflow noise reduction device which characterized in that includes:

a gas distribution layer (8);

the silencing upper cover (1) is provided with at least one overflow through hole (5) and at least one air outlet (72);

the exhaust passage (7) is positioned inside the cavity of the silencing upper cover (1), and gas output by the gas distribution layer (8) enters the exhaust passage (7) and is communicated with an external gas device through the gas outlet (72);

the mounting through hole (2) is positioned on the silencing upper cover (1), the mounting through hole (2) is provided with an air inlet port (21) and an air outlet port (22), and the air inlet port (21) is communicated with the exhaust channel (7);

the overflow silencing channel (4) is also positioned in the cavity of the silencing upper cover (1), one end of the overflow silencing channel is communicated with the air leakage port (22), and the other end of the overflow silencing channel is communicated with the external gas environment through the overflow through hole (5);

the overflow valve (3) is positioned in the installation through hole (2), and is provided with an air inlet end (301) matched and connected with the air inlet port (21) and an air leakage end (302) matched and connected with the air leakage port (22) for controlling the communication or the closing of the exhaust channel (7) and the overflow silencing channel (4).

2. An air pump overflow noise reduction device according to claim 1, wherein the overflow noise reduction channel (4) is a single cavity;

or, the overflow silencing passage (4) is a zigzag and winding gas path passage;

or the overflow silencing passage (4) is a labyrinth-shaped gas passage.

3. Air pump overflow noise reduction device according to claim 1, characterized in that a noise reduction cotton (9) is arranged in the overflow noise reduction channel (4).

4. An air pump overflow noise reduction device according to any one of claims 1-3, wherein the overflow valve (3) comprises a sealing ring (34), a valve core (33), a spring (32) and an end cover (31) which are sequentially matched along a first direction; wherein,

the side wall of the valve core (33) is annularly provided with a clamping piece (331), the sealing ring is sleeved on the valve core (33) and is abutted against one end of the clamping piece (331), the spring (32) is sleeved on the valve core (33), and one end of the spring is abutted against the other end of the clamping piece (331);

the end cover (31) is hermetically arranged in the mounting through hole (2), and the other end of the spring (32) is abutted with the end cover (31);

the first direction is the direction from being relatively close to the gas distribution layer (8) to being relatively far away from the silencing upper cover (1).

5. An air pump overflow noise reduction device according to claim 4, wherein the air inlet port (21) is located at the bottom of the mounting through hole (2) or on the peripheral side wall of the bottom; the air leakage port (22) is located on the peripheral side wall of the installation through hole (2).

6. An air pump overflow noise reduction device according to claim 4, wherein the peripheral side wall of the clip (331) is provided with at least one groove structure; the outer side wall of the end cover (31) is annularly provided with a clamping brim, and the clamping brim is connected with the mounting through hole (2) in a clamping mode.

7. An air pump overflow noise reduction device according to claim 1, wherein the exhaust passage (7) is a winding or labyrinth air passage, the starting end of the air passage is an air inlet cavity (71), and the air inlet cavity (71) is communicated with the air output by the air distribution layer (8).

8. An air pump overflow noise reduction device according to claim 1,

the upper silencing cover (1) is hermetically connected with the gas distribution layer (8).

9. An air pump overflow noise reduction device according to claim 8,

the sealing connection is ultrasonic welding.

10. A miniature air pump, characterized in that, comprising an air pump overflow noise reduction device as claimed in any one of claims 1-9, one end of the air distribution layer (8) is connected with the plunger of the air pump, and the other end is connected with the noise reduction upper cover (1).

11. A pneumatic adjusting system for car seat, comprising a micro air pump of claim 10, further comprising at least one air bag body, a valve body, and an air pipe, wherein the air of the micro air pump is supplied to the air bag body via the air pipe and the valve body, and the air bag body is installed in the car seat.

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