CN215821621U

CN215821621U - Low-noise air bag

Info

Publication number: CN215821621U
Application number: CN202120949255.8U
Authority: CN
Inventors: 卜祥建; 侯亮; 洪辉能
Original assignee: Xiamen Comfort Science and Technology Group Co Ltd; Xiamen Healthcare Electronic Co Ltd
Current assignee: Xiamen Comfort Science and Technology Group Co Ltd; Xiamen Healthcare Electronic Co Ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2022-02-15
Anticipated expiration: 2031-05-06
Also published as: WO2022233124A1

Abstract

The utility model discloses a low-noise air bag, which is characterized in that sound-absorbing cotton is arranged in an expansion cavity formed by enclosing an air inlet cavity cap and a soft air bag, and a first air inlet hole is formed in the soft air bag, so that air flow enters the soft air bag from the first air inlet hole after penetrating through the sound-absorbing cotton.

Description

Low-noise air bag

Technical Field

The utility model relates to an air bag inflation structure, in particular to a low-noise air bag.

Background

At present, the pneumatic massage of the massage health-care product is a main massage mode, the inflation and deflation of the air bag are controlled through the air pump, the air valve, the air bag and the control system to realize extrusion type massage, namely, the air pump is used for intermittently inflating and deflating the air bag to realize the massage function. In order to meet the requirement of consumers on the comfort level of the massage apparatus, the massage apparatus should have good silencing performance, wherein with the technical progress, driving components such as a motor, an air pump and the like for the massage apparatus can achieve better silencing effect, but the noise generated by the air bag mechanism for the massage apparatus during inflation is still not effectively solved. In addition, the above problems are also present in apparatuses using an airbag such as medical instruments and air beds. In view of this, the present application is specifically made.

SUMMERY OF THE UTILITY MODEL

The utility model provides a low-noise air bag aiming at the defects of the prior art, thereby solving the problem that the existing air bag has large noise while inflating slowly.

The utility model provides a low-noise air bag, which comprises an air tap 1, an air inlet cavity cap 2, sound-absorbing cotton 3 and a soft air bag 5; the air tap 1 is connected with the air inlet cavity cap 2, the sound-absorbing cotton 3 is arranged in an expansion cavity 21 enclosed by the air inlet cavity cap 2 and the soft air bag 5, and a first air inlet 51 is arranged on the soft air bag 5;

after the air flow enters the expansion cavity 21 through the air faucet 1, the air flow enters the soft air bag 5 through the first air inlet 51 after penetrating through the sound-absorbing cotton 3.

By adopting the technical scheme, the utility model can obtain the following technical effects: compared with the prior art, this low noise gasbag through at the inlet chamber cap with be provided with in the inflation cavity that the software gasbag encloses and inhale the sound cotton, be equipped with first inlet port on the software gasbag to make the air current permeate through inhale behind the sound cotton first inlet port gets into inside the software gasbag, this low noise gasbag simple structure makes simple to operate, when guaranteeing gasbag inflation efficiency, can effectively reduce the noise of aerifing.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a low noise airbag according to an embodiment of the present invention;

FIG. 2 is another schematic view of a low noise airbag of FIG. 1;

FIG. 3 is a schematic cross-sectional view of a low noise airbag of FIG. 1;

fig. 4 is a schematic view showing an external structure of a low noise airbag of fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

With reference to fig. 1-4, an embodiment of the present invention provides a low noise airbag, which includes an air faucet 1, an air inlet cap 2, a sound-absorbing cotton 3 and a soft airbag 5; the air tap 1 is connected with the air inlet cavity cap 2, the sound-absorbing cotton 3 is arranged in an expansion cavity 21 enclosed by the air inlet cavity cap 2 and the soft air bag 5, and a first air inlet 51 is arranged on the soft air bag 5;

Wherein, the air tap 1 is connected with the air pipe 11.

According to the low-noise air bag disclosed by the utility model, when air is fed, the flow rate of the gas is reduced after the high-speed airflow enters the expansion cavity through the air nozzle, and the gas enters the soft air bag through the first air inlet after penetrating through the sound-absorbing cotton. The purpose of reducing the inflation noise is achieved through the combined action of the expansion cavity and the sound absorption cotton.

Further, in an example, as shown in fig. 2, since the air flow pushes the sound-absorbing cotton to move slightly, in order to achieve better noise reduction effect of the air bag inflation effect, the expansion cavity 21 is further provided with fixed cylinders 22, and the fixed cylinders 22 are uniformly distributed around the sound-absorbing cotton 3 to prevent the sound-absorbing cotton 3 from moving under the action of the air flow.

As shown in figure 2, the air inlet cavity cap 2 is directly arranged on the outer side of the soft air bag 5 by means of bonding and the like, the soft air bag 5 is provided with an air inlet, and the sound absorption cotton 3 is arranged in the air inlet cavity cap 2.

Further, in another example, as shown in fig. 1, without providing a plurality of fixing columns 22, the sound-absorbing cotton 3 may be fixed by providing an annular pressure plate 4, specifically, the annular pressure plate 4 and the air inlet cap 2 enclose an expansion cavity 21, the annular pressure plate 4 is provided with a second air inlet 41, and the annular pressure plate 4 fixes the sound-absorbing cotton 3 in the expansion cavity 21 to prevent the sound-absorbing cotton 3 from moving under the action of the airflow. Annular pressure disk 4 rigid coupling is in on the software gasbag, specifically accessible hot pressing or mode such as bonding install in 5 inboard of software gasbag, intake chamber cap 2 and annular pressure disk 4 fixed connection, specifically accessible threaded connection is in order to guarantee joint strength and gas tightness.

Of course, in order to make the inflation air flow enter the soft air bag sufficiently, the sound-absorbing cotton 3 is located right above the first air inlet hole 51 or the second air inlet hole 41, as shown in fig. 1-3.

Further, in one example, as shown in fig. 1 and 2, the sound-absorbing cotton 3 is located in the expansion cavity 21 at a distance greater than a preset distance from the air faucet 1. For example, the sound-absorbing cotton is spaced from the air inlet of the air inlet cap 2 by more than 3mm, so that the inflation noise is reduced, and the inflation and exhaust efficiency is ensured.

Further, in one example, as shown in fig. 1 to 3, the radius of the first air intake hole 51 or the second air intake hole 41 is larger than a preset multiple of the radius of the air inlet of the air faucet 1. Specifically, the radius of the first air inlet hole 51 or the second air inlet hole 41 is larger than 1.5 times of the radius of the air inlet of the air faucet 1, so that the air bag inflation noise is obviously reduced on the basis of ensuring the inflation and exhaust efficiency, the structure is simple, and the cost is lower.

In addition, it should be noted that the structure, position and installation relationship of the air inlet cap of the low noise air bag of the present invention, including the sound-absorbing cotton, the air nozzle, the air hole, etc., can be applied not only to massage devices such as massage chairs, but also to mattress products that can use air fluctuation, and all the schemes including the low noise air bag of the present invention are within the protection scope of the present invention.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A low-noise air bag is characterized by comprising an air nozzle (1), an air inlet cavity cap (2), sound-absorbing cotton (3) and a soft air bag (5); the air tap (1) is connected with the air inlet cavity cap (2), the sound-absorbing cotton (3) is arranged in an expansion cavity (21) enclosed by the air inlet cavity cap (2) and the soft air bag (5), and a first air inlet hole (51) is formed in the soft air bag (5);

after the air flow enters the expansion cavity (21) through the air tap (1), the air flow penetrates through the sound absorption cotton (3) and then enters the soft air bag (5) through the first air inlet hole (51).

2. The airbag according to claim 1, wherein the inflatable cavity (21) is further provided with fixing columns (22), and the fixing columns (22) are uniformly distributed around the sound-absorbing cotton (3) to prevent the sound-absorbing cotton (3) from moving under the action of the airflow.

3. The low-noise air bag according to claim 1, further comprising an annular pressure plate (4), wherein the annular pressure plate (4) and the air inlet cavity cap (2) enclose an expansion cavity (21), a second air inlet hole (41) is formed in the annular pressure plate (4), and the sound-absorbing cotton (3) is fixed in the expansion cavity (21) by the annular pressure plate (4).

4. A low noise air bag according to claim 3, wherein said sound-absorbing cotton (3) is positioned directly above said first air intake hole (51) or said second air intake hole (41).

5. A low noise air bag according to claim 3, wherein said sound-absorbing cotton (3) is positioned in said inflatable cavity (21) at a distance from the air tap (1) greater than a preset distance.

6. A low noise air bag according to claim 3, wherein said annular pressure plate (4) is fixed inside said soft air bag (5).

7. A low noise air bag according to claim 4, wherein the radius of the first air intake hole (51) or the second air intake hole (41) is larger than a predetermined multiple of the radius of the air inlet of the air nozzle (1).

8. The low noise air bag according to claim 1, wherein the inlet chamber cap (2) is fixedly connected to the annular pressure plate (4) to secure a connection strength and an air tightness.