Pneumatic pump and valve integrated device capable of reducing noise

Abstract

According to the pneumatic pump and valve integrated device capable of reducing noise, a first space is formed in a shell, one or two circulation openings communicating with the first space are formed in the shell, mounting cavities are formed in the positions, corresponding to the circulation openings, of the shell, the mounting cavities communicate with the circulation openings, and porous silencing bodies are arranged in the mounting cavities; a pump-valve integrated structure is further arranged in the first space, when the first space is provided with one circulation opening, the pump-valve integrated structure sucks air and exhausts air through the circulation opening, and when the first space is provided with two circulation openings, the pump-valve integrated structure sucks air through one circulation opening and exhausts air through the other circulation opening; during air suction and air exhaust, sound waves are reflected and refracted through the porous silencing body, and the noise reduction effect is achieved.

Description

Technical Field

[0001] This application relates to the field of automotive seat technology, and more specifically to a noise-reducing integrated pneumatic pump and valve device. Background Technology

[0002] With the advancement of technology, the demand for car seat comfort is increasing, and car seat massage systems have emerged. A car seat massage system includes multiple air bags and pneumatic devices. The pneumatic devices control the inflation and deflation of the air bags to achieve the massage function.

[0003] The existing pneumatic device includes a housing and a pump-valve integrated unit located inside the housing. The pump-valve integrated unit includes a valve body and a pump body that communicate with the air bag. The housing has a first flow opening. When the air bag is inflated, the pump body draws air from the first flow opening and inflates the air bag through the valve body. When the air bag deflates, the gas in the air bag is discharged from the vent in the valve body through the first flow opening.

[0004] In the existing technology, the noise from gas entering and exiting the first flow opening is relatively large. When the pump is working, the noise will also be transmitted from the first flow opening, further increasing the noise and reducing the passenger experience. Summary of the Invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide a noise-reducing integrated pneumatic pump and valve device, comprising:

[0006] A housing, wherein a first space is formed inside the housing, and one or two flow openings communicating with the first space are provided on the housing, and an installation cavity is provided on the housing corresponding to the flow opening, the installation cavity communicating with the flow opening;

[0007] A sound-absorbing body is disposed inside the mounting cavity, and the sound-absorbing body has a porous structure.

[0008] The pump and valve integrated structure is disposed in the first space. When it has one flow opening, the pump and valve integrated structure draws in air and exhausts air through the flow opening. When it has two flow openings, the pump and valve integrated structure draws in air through one of the flow openings and exhausts air through the other flow opening.

[0009] According to the technical solution provided in the embodiments of this application, the housing includes an upper housing and a lower housing that snaps into the upper housing along a first direction, and the lower housing includes a first housing and a second housing along a second direction; the upper housing and the lower housing snap together to form a first space; the first housing and the second housing are fastened together, and their fastening ends respectively have a first fastening end and a second fastening end, the first fastening end and the second fastening end at least partially overlap, for closing the first space; and the first housing and the second housing are fastened together by a snap-fit ​​structure.

[0010] According to the technical solution provided in the embodiments of this application, both the first snap-fit ​​end and the second snap-fit ​​end are single-walled shells, and the first snap-fit ​​end is placed inside the second snap-fit ​​end.

[0011] According to the technical solution provided in the embodiments of this application, the second fastening end has a first groove on the side near the first fastening end, and the first fastening end is placed in the first groove to form a second space with the second fastening end.

[0012] According to the technical solution provided in the embodiments of this application, the second fastening end includes a second outer wall and a second inner wall. The second inner wall is provided with an inner wall opening, which communicates with the first space and the second space. When there is a flow opening, the flow opening is provided on the second outer wall, and the first space, the inner wall opening, the second space, and the flow opening form a flow channel.

[0013] According to the technical solution provided in the embodiments of this application, the flow opening is located at the bottom of the second housing, and the inner wall opening and the flow opening are arranged opposite to each other.

[0014] According to the technical solution provided in the embodiments of this application, the flow opening and the inner wall opening are located at the bottom of the second housing, and the flow opening and the inner wall opening are staggered.

[0015] According to the technical solution provided in the embodiments of this application, the flow opening is located at the bottom of the second housing, and the inner wall opening is located in the middle of the second inner wall.

[0016] According to the technical solution provided in the embodiments of this application, when there are two flow openings, the other flow opening is located at the bottom of the second housing. The pump with the integrated pump-valve structure has an air intake nozzle, and the air intake nozzle is connected to a vent pipe. The vent pipe extends from the flow opening at the end away from the pump.

[0017] According to the technical solution provided in the embodiments of this application, a silencer is provided inside the vent pipe corresponding to the mounting cavity.

[0018] In summary, this application proposes a noise-reducing integrated pneumatic pump and valve device. A first space is formed inside the housing. One or two flow openings communicating with the first space are provided on the housing. A mounting cavity is provided on the housing corresponding to each flow opening, communicating with the flow opening. A porous silencer is provided inside the mounting cavity. The first space also contains an integrated pump and valve structure. When there is one flow opening, the integrated pump and valve structure draws in and exhausts air through that opening. When there are two flow openings, the integrated pump and valve structure draws in air through one flow opening and exhausts air through the other. During both intake and exhaust, the porous silencer reflects and refracts sound waves, achieving noise reduction. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of the noise-reducing integrated pneumatic pump and valve device provided in the embodiments of this application;

[0020] Figure 2 A cross-sectional schematic diagram of a noise-reducing integrated pneumatic pump and valve device provided in an embodiment of this application;

[0021] Figure 3 A bottom view of the noise-reducing integrated pneumatic pump and valve device provided in an embodiment of this application;

[0022] Figure 4 A partial cross-sectional view of the first shell and the shell, wherein the second abutment end is a single-walled shell, provided in the embodiments of this application;

[0023] Figure 5 A partial cross-sectional view of the first shell and the shell, where the second abutment end is a double-walled shell, provided in an embodiment of this application;

[0024] Figure 6 A cross-sectional view of a noise-reducing pneumatic pump and valve integrated device provided in an embodiment of this application, wherein the inner wall opening and the first flow opening are positioned opposite each other.

[0025] Figure 7 A cross-sectional view of a noise-reducing integrated pneumatic pump and valve device provided in an embodiment of this application, wherein the inner wall opening and the first flow opening are misaligned.

[0026] Figure 8 A cross-sectional view of a noise-reducing integrated pneumatic pump and valve device with an inner wall opening located in the middle, provided in an embodiment of this application.

[0027] Figure 9 A schematic diagram of a noise-reducing integrated pneumatic pump and valve device with two flow openings is provided for embodiments of this application.

[0028] Figure 10 for Figure 9 Cross-sectional view;

[0029] Figure 11 An exploded view of the noise-reducing integrated pneumatic pump and valve device provided in the embodiments of this application.

[0030] The text labels in the image represent:

[0031] 1. Housing; 11. First housing; 111. First snap-fit ​​end; 12. Second housing; 121. Second snap-fit ​​end; 122. Boss; 123. Inner wall opening; 124. Flow channel; 125. Second space; 2. Snap-fit ​​structure; 3. Flow opening; 31. Mounting cavity; 4. Silencer; 41. Silencer structure; 5. Flow opening; 6. Vent pipe; 7. Pump and valve integrated structure. Detailed Implementation

[0032] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] As mentioned in the background section, there are technical issues such as... Figure 1-5 and Figure 11 As shown, this application proposes a noise-reducing integrated pneumatic pump and valve device, comprising:

[0035] The housing 1 has a first space inside it, and one or two flow openings 3 are provided on the housing 1 to communicate with the first space. The housing 1 is provided with a mounting cavity 31 corresponding to the flow opening 3, and the mounting cavity 31 is in communication with the flow opening 3.

[0036] The sound-absorbing body 4 is disposed inside the mounting cavity 31 and has a porous structure.

[0037] The pump-valve integrated structure 7 is disposed in the first space. When it has one flow opening 3, the pump-valve integrated structure 7 draws in air and exhausts air through the flow opening 3. When it has two flow openings 3, the pump-valve integrated structure 7 draws in air through one of the flow openings 3 and exhausts air through the other flow opening 3.

[0038] Specifically, the housing has a hollow cylindrical structure at any flow opening 3, the interior of which is an installation cavity 31. The integrated pump-valve structure 7 includes a valve body located at the top of the housing and an air pump located below the valve body. The air pump is used to pressurize atmospheric gas. The valve body is connected to multiple air bags for inflating or deflating the air bags. When the air bags are inflated, the air pump draws in air through the flow opening 3 and pressurizes it to form high-pressure gas, which is then supplied to the valve body to inflate the air bags. The valve body has a vent, which is connected to the flow opening 3. When the air bags are deflated, the gas in the air bags passes through the vent and is discharged through the flow opening 3. Figure 2 As shown, the dashed arrows indicate the airflow direction when the device is inflated, and the solid arrows indicate the airflow direction when it is deflated. The silencer 4 has a porous structure, which reflects and refracts sound waves, thus achieving noise reduction.

[0039] In a preferred embodiment, the housing 1 includes an upper housing and a lower housing that snaps into the upper housing along a first direction, and the lower housing includes a first housing 11 and a second housing 12 along a second direction; the upper housing and the lower housing snap together to form a first space; the first housing 11 and the second housing 12 are fastened together, and their fastening ends respectively have a first fastening end and a second fastening end, the first fastening end 111 and the second fastening end 121 at least partially overlap to close the first space; and the first housing 11 and the second housing 12 are fastened together by a snap-fit ​​structure 2.

[0040] Wherein, the first direction is the up-down direction, and the second direction is the left-right direction; the snap-fit ​​structure 2 includes a first snap-fit ​​end provided on the outer wall of the first housing 11 or the second housing 12, and a second snap-fit ​​end provided on the outer wall of the second housing 12 or the first housing 11. The first snap-fit ​​end is a U-shaped buckle, and the second snap-fit ​​end is a triangular buckle block. The triangular buckle block can be snapped into the U-shaped buckle.

[0041] Optionally, the cross-sections of the first housing 11 and the second housing 12 that are close to each other are rectangular. The cross-sectional area of ​​the first snap-fit ​​end 111 is slightly smaller than the cross-sectional area of ​​the second snap-fit ​​end 121. When the first snap-fit ​​end 111 is placed inside the second snap-fit ​​end 121, the outer wall of the first snap-fit ​​end 111 is in close contact with the inner wall of the second snap-fit ​​end 121. The first housing 11 and the second housing 12 are then fixed by the snap-fit ​​structure 2.

[0042] In a preferred embodiment, both the first snap-fit ​​end 111 and the second snap-fit ​​end 121 are single-walled shells, with the first snap-fit ​​end 111 placed inside the second snap-fit ​​end 121.

[0043] Optionally, the flow opening 3 is located at the bottom of the first housing 11 or the second housing 12, avoiding the first snap-fit ​​end 111 and the second snap-fit ​​end 121.

[0044] In a preferred embodiment, the second snap-fit ​​end 121 has a first groove on the side near the first snap-fit ​​end 111, and the first snap-fit ​​end 111 is placed in the first groove, forming a second space 125 with the second snap-fit ​​end 121.

[0045] The first housing 11 includes a first snap-fit ​​end 111 and a first housing 11 wall disposed on the side of the first snap-fit ​​end 111 away from the second housing 12. The outer diameter of the first snap-fit ​​end 111 is larger than the outer diameter of the first housing 11, so a boss 122 is formed between the first housing 11 wall and the first snap-fit ​​end 111. The end of the second snap-fit ​​end 121 near the first snap-fit ​​end 111 abuts against the boss 122.

[0046] In a preferred embodiment, the second snap-fit ​​end 121 includes a second outer wall and a second inner wall. The second inner wall is provided with an inner wall opening 123, which communicates with the first space and the second space 125. When there is a flow opening 3, the flow opening 3 is provided on the second outer wall, and the first space, the inner wall opening 123, the second space 125, and the flow opening 3 form a flow channel 124.

[0047] Since the second snap-fit ​​end 121 has a first groove, that is, the side of the second snap-fit ​​end 121 near the first snap-fit ​​end 111 is a double-walled shell, the airflow reduces the turbulence and eddy current phenomenon after passing through the flow channel 124, making the speed and pressure changes more stable. Therefore, the second snap-fit ​​end 121 of the double-walled shell will further reduce noise.

[0048] In a preferred embodiment, the flow opening 3 is located at the bottom of the second housing 12, and the inner wall opening 123 and the flow opening 3 are arranged opposite to each other. Figure 6 As shown, the inner wall opening 123 is located directly above the flow opening 3.

[0049] In a preferred embodiment, the flow opening 3 and the inner wall opening 123 are located at the bottom of the second housing 12, and the flow opening 3 and the inner wall opening 123 are staggered; as Figure 7 As shown.

[0050] In a preferred embodiment, the flow opening 3 is located at the bottom of the second housing 12, and the inner wall opening 123 is located in the middle of the second inner wall; as shown Figure 8 As shown.

[0051] In a preferred embodiment, such as Figure 9-10As shown, when there are two flow openings 3, the other flow opening 3 is located at the bottom of the second housing 12. The pump of the integrated pump-valve structure 7 has an air intake nozzle, and the air intake nozzle is connected to a vent pipe 6. The vent pipe 6 extends from the flow opening away from the end of the air pump.

[0052] Optionally, the air pump models corresponding to one flow opening 3 and two flow openings 3 are different. When there are two flow openings 3, the air pump has an air intake nozzle, which draws air to supply air to the valve body. The vent pipe 6 has the same function as the flow channel 124, which can stabilize the airflow and reduce noise. Let the flow opening 3 corresponding to the vent pipe 6 be called the second flow opening, and the other flow opening 3 be called the first flow opening. Optionally, the second flow opening can be set at the second abutment end 121, penetrating the second outer wall and the second inner wall, or it can be set at the second housing 12 at a location other than the second abutment end 121. The vent pipe 6 draws air from the outside through the second flow opening. When the air bag is in a deflated state, the gas in the air bag passes through the deflation port and is discharged through the first flow opening.

[0053] In a preferred embodiment, a silencer 4 is provided inside the vent pipe 6 at the location corresponding to the mounting cavity 31.

[0054] The silencer 4 inside the vent pipe is the same as the silencer 4 inside the first flow opening, and has a porous structure. The silencer 4 and the vent pipe 6 work together to improve the noise reduction effect.

[0055] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A noise-reducing integrated pneumatic pump and valve device, characterized in that, include: The housing (1) forms a first space inside the housing (1), and the housing (1) is provided with one or two flow openings (3) that communicate with the first space. The housing (1) is provided with an installation cavity (31) corresponding to the flow opening (3), and the installation cavity (31) communicates with the flow opening (3). The silencer (4) is located inside the mounting cavity (31) and has a porous structure. The pump-valve integrated structure (7) is located in the first space. When it has one flow opening (3), the pump-valve integrated structure (7) draws in air and exhausts air through the flow opening (3). When it has two flow openings (3), the pump-valve integrated structure (7) draws in air through one of the flow openings (3) and exhausts air through the other flow opening (3).

2. The noise-reducing integrated pneumatic pump and valve device according to claim 1, characterized in that, The housing (1) includes an upper housing and a lower housing that snaps into the upper housing along a first direction. The lower housing includes a first housing (11) and a second housing (12) that snap into each other along a second direction. The upper housing and the lower housing snap into each other to form the first space. The first housing (11) and the second housing (12) snap into each other, and their snap-in ends have a first snap-in end (111) and a second snap-in end (121) respectively. The first snap-in end (111) and the second snap-in end (121) overlap at least partially to close the first space. The first housing (11) and the second housing (12) snap into each other through a snap-in structure (2).

3. The noise-reducing integrated pneumatic pump and valve device according to claim 2, characterized in that, Both the first snap-fit ​​end (111) and the second snap-fit ​​end (121) are single-walled shells, with the first snap-fit ​​end (111) placed inside the second snap-fit ​​end (121).

4. The noise-reducing integrated pneumatic pump and valve device according to claim 2, characterized in that, The second snap-fit ​​end (121) has a first groove on the side near the first snap-fit ​​end (111), and the first snap-fit ​​end (111) is placed in the first groove, forming a second space (125) with the second snap-fit ​​end (121).

5. The noise-reducing integrated pneumatic pump and valve device according to claim 4, characterized in that, The second snap-fit ​​end (121) includes a second outer wall and a second inner wall. The second inner wall is provided with an inner wall opening (123). The inner wall opening (123) communicates with the first space and the second space (125). When there is a flow opening (3), the flow opening (3) is provided on the second outer wall. The first space, the inner wall opening (123), the second space (125), and the flow opening (3) form a flow channel (124).

6. The noise-reducing integrated pneumatic pump and valve device according to claim 5, characterized in that, The flow opening (3) is located at the bottom of the second housing (12), and the inner wall opening (123) and the flow opening (3) are arranged opposite to each other.

7. The noise-reducing integrated pneumatic pump and valve device according to claim 5, characterized in that, The flow opening (3) and the inner wall opening (123) are located at the bottom of the second housing (12), and the flow opening (3) and the inner wall opening (123) are staggered.

8. The noise-reducing integrated pneumatic pump and valve device according to claim 5, characterized in that, The flow opening (3) is located at the bottom of the second housing (12), and the inner wall opening (123) is located in the middle of the second inner wall.

9. The noise-reducing integrated pneumatic pump and valve device according to claim 5, characterized in that, When there are two flow openings (3), the other flow opening (3) is located at the bottom of the second housing (12). The pump of the integrated pump-valve structure (7) has an air intake nozzle, which is connected to a vent pipe (6). The vent pipe (6) extends from the flow opening (3) away from the pump end.

10. The noise-reducing integrated pneumatic pump and valve device according to claim 9, characterized in that, The vent pipe (6) is provided with the sound-absorbing body (4) inside the corresponding part of the mounting cavity (31).

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