Air bag type mute pillow and manufacturing method thereof

Abstract

The invention discloses an air bag type mute pillow and a manufacturing method thereof, and belongs to the technical field of pillows. The air bag type mute pillow comprises a head pillow part and a neck pillow part which are integrally formed, a first folding air bag is embedded in the head pillow part and the neck pillow part, a second folding air bag is embedded in the neck pillow part, the first folding air bag is arranged on the peripheral side of the second folding air bag in a surrounding mode, and pressure sensors are arranged on the top of the first folding air bag and the top of the second folding air bag. The bottom of the first folding air bag and the bottom of the second folding air bag are each provided with an inflation and deflation assembly, and the pressure sensors are electrically connected with the inflation and deflation assemblies. The inflation and deflation assembly comprises an air pipe, a noise reduction assembly is arranged in the air pipe, the air pipe is connected to the bottom of the first folding air bag and the bottom of the second folding air bag in a penetrating mode through the noise reduction assembly, the noise reduction assembly comprises a flow guide part and a noise reduction part, and the noise reduction part surrounds the peripheral side of the flow guide part. Noise and air leakage risks are reduced, durability and reliability of the pillow are improved, and sleep experience of a user is guaranteed.

Description

Technical Field

[0001] The present application relates to an airbag type silent pillow and a manufacturing method thereof, belonging to the technical field of pillows. Background Art

[0002] A latex pillow is a pillow made of latex. Latex is a natural material, which has breathability and hygroscopicity, and high resilience, but does not have the characteristic of memory. Therefore, the latex pillow conforms to long-term sleep habits and can give users a more comfortable experience.

[0003] An airbag pillow has one or more airbags inside. By adjusting the amount of gas in the airbag, it can be used by people in different sleeping postures (supine, side lying or prone), which helps to relieve the pressure on the head and neck and reduce the discomfort or pain caused by maintaining a bad posture for a long time. When the existing airbag pillow adjusts the height, due to factors such as too high inflation pressure of the airbag and air flow back in the air path, obvious air flow noise is generated in the air path, affecting human sleep. In order to achieve a better silent effect, usually the internal structure of the airbag is improved. However, the complex internal structure increases the connection points of the airbag, and it is easy to have a situation where the seal is not tight at the connection position, resulting in an increased risk of air leakage. Summary of the Invention

[0004] In order to solve the above problems, an airbag type silent pillow and a manufacturing method thereof are provided, which not only reduce noise but also reduce the risk of air leakage, improve the durability and reliability of the pillow, and ensure the sleep experience of users.

[0005] The technical solution adopted by the present invention is as follows:

[0006] According to one aspect of the present application, an airbag type silent pillow is provided, including a latex pillow core. The latex pillow core includes a headrest part and a neckrest part which are integrally formed. The headrest part and the neckrest part are internally embedded with a first folding airbag. The neckrest part is internally embedded with a second folding airbag. The first folding airbag surrounds the second folding airbag. Pressure sensors are arranged at the tops of the first folding airbag and the second folding airbag. Inflation and deflation components are arranged at the bottoms of the first folding airbag and the second folding airbag. The pressure sensors are electrically connected to the inflation and deflation components;

[0007] The inflation and deflation component includes an air pipe. A noise reduction component is arranged inside the air pipe. The air pipe is connected to the bottoms of the first folding airbag and the second folding airbag through the noise reduction component. The noise reduction component includes a diversion part and a sound absorption part. The sound absorption part surrounds the diversion part.

[0008] Optionally, the sound absorption part includes a sound absorption chamber, sound absorption cotton and a sound absorption plate. The sound absorption plate covers the mouth of the sound absorption chamber so that the sound absorption cotton is filled in the sound absorption chamber. Through holes are arranged on the sound absorption plate.

[0009] Optionally, both ends of the flow guiding part are in the shape of grooves. The flow guiding part includes a flow guiding column and a curved flow guiding sheet. The flow guiding sheets are uniformly arranged on the outer periphery of the flow guiding column, and one end of the flow guiding sheet far away from the flow guiding column is connected to the sound absorption plate.

[0010] Optionally, the air charging and discharging assembly further includes an air pump and a control valve. One end of the air pipe far away from the noise reduction assembly is connected to the air pump, and the control valve is connected in series on the air pipe.

[0011] Optionally, a main control circuit board is arranged in the air pump, and the main control circuit board is electrically connected to the control valve and the pressure sensor respectively.

[0012] Optionally, a conversion module for air charging and discharging is installed in the control valve. The conversion module includes an air charging valve and an air deflation valve, and the main control circuit board is electrically connected to the air charging valve and the air deflation valve respectively.

[0013] According to another aspect of the present application, there is provided a manufacturing method of the airbag type silent pillow described in any one of the above, including the following steps:

[0014] (1) Dispersing mesoporous silica in tetrahydrofuran at 40 - 60 °C and refluxing for 4 - 8 h to obtain a mixed solution A;

[0015] (2) Dissolving polyurethane and nitrile rubber with a mass ratio of 1:(1 - 2) in tetrahydrofuran, then adding the mixed solution A, stirring at room temperature for 4 - 8 h, and then stirring at 40 - 60 °C for 5 - 10 h to obtain a mixed solution B;

[0016] (3) Dissolving 0.8 - 1.5 wt% sulfur, 4 - 6 wt% zinc oxide, 0.3 - 0.7 wt% stearic acid, and 1 - 2 wt% compound vulcanization accelerator in tetrahydrofuran, ultrasonically treating for 3 - 8 min, and then adding to the mixed solution B, stirring at 40 - 60 °C for 20 - 40 min to obtain a mixed solution C;

[0017] (4) Casting the mixed solution C into a glass petri dish, vacuum drying at 50 - 65 °C for 4 - 8 h, then carrying out mixing at room temperature, and molding by pressing at 140 - 150 °C to obtain a first folding airbag and a second folding airbag;

[0018] (5) Connecting the first folding airbag and the second folding airbag to the pressure sensor and the air charging and discharging assembly respectively, and then assembling them in the latex pillow core to obtain the airbag type silent pillow.

[0019] Optionally, the addition amount of the mesoporous silica is 3 - 8 wt%.

[0020] Optionally, the mesoporous silica is prepared by the following method:

[0021] Dissolve cetyltrimethylammonium bromide in a mixed solution of ethanol, ammonia water and distilled water with a volume ratio of (1.5 - 1.8):(1.1 - 1.3):1, and stir at 25 - 40 °C for 1 - 3 h; then add tetraethyl orthosilicate and continue stirring until a sol is formed; age the sol at 90 - 105 °C for 20 - 30 h, and then add it to a mixed solution of ethanol and hydrochloric acid with a volume ratio of (8 - 10):1 at 55 - 70 °C and stir for 20 - 30 h, and then filter, wash and dry to obtain mesoporous silica.

[0022] Optionally, the mass ratio of cetyltrimethylammonium bromide to tetraethyl orthosilicate is 1:(1.5 - 3).

[0023] Optionally, the compound vulcanization accelerator is accelerator ZDC and accelerator MBT with a mass ratio of 1:(1 - 2).

[0024] In this application, "room temperature" refers to 20 - 30 °C.

[0025] The beneficial effects of this application include but are not limited to:

[0026] 1. The airbag type silent pillow of this application can provide targeted support according to different parts of the human body by setting the first folding airbag and the second folding airbag; by setting the pressure sensor and the air charging and discharging component, the function of intelligently adjusting the softness and hardness of the airbag according to the user's needs is realized, which is convenient to use and can adapt to different sleeping postures; by setting the noise reduction component, the noise generated when gas enters and exits the airbag is effectively reduced, and the overall silent effect is improved, which is beneficial to creating a quiet and comfortable sleeping environment; among them, the diversion part can direct the flowing gas in the diameter direction, and has the effect of allowing noise to enter the sound absorption part without hindering the gas flow, so as to achieve the purpose of noise reduction.

[0027] 2. The manufacturing method of the airbag type silent pillow of this application refluxes mesoporous silica (2 - 50 nm) in tetrahydrofuran to ensure the uniform dispersion of mesoporous silica and maximize its sound absorption specific surface area; the synergistic effect of the polyurethane / nitrile rubber composite matrix enables the airbag to withstand repeated inflation and deflation deformation and extends its service life; the combination of a suitable ratio of vulcanization aids and a low-temperature vulcanization process avoids the destruction of the mesoporous structure, and a cross-linked network is formed after vulcanization, endowing the airbag with excellent resistance to permanent deformation; after casting, compression molding is carried out, which not only avoids the agglomeration of mesoporous silica, but also enables the molecular chains to be closely arranged, removes bubbles, and forms a defect-free homogeneous structure, thereby improving the airtightness of the airbag; the latex and airbag composite structure takes into account the support and silent requirements of the pillow, realizes highly adaptive adjustment, and improves the user experience.

[0028] 3. Manufacturing method of the airbag type silent pillow of the present application. The first folding airbag and the second folding airbag are made of a polyurethane / nitrile rubber composite material containing mesoporous silica with sound insulation and support performance. By adjusting the preparation process, the sound absorption performance of the composite material can be significantly improved, making it suitable for application scenarios that require high-efficiency sound insulation. In addition, the polyurethane / nitrile rubber composite material containing mesoporous silica also has good elastomer properties. Due to the presence of polyurethane, the tensile strength, antioxidant property, and weather resistance of the airbag are improved. The addition of nitrile rubber enhances the thermal stability and solvent resistance of polyurethane. The hydroxyl groups on the added mesoporous silica have strong interfacial interactions (hydrogen bond interactions) with the amide groups on polyurethane and the cyano groups on nitrile rubber, increasing the intermolecular compatibility, thereby significantly improving the mechanical properties of the airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0030] Figure 1 It is a schematic structural diagram of the airbag type silent pillow according to an embodiment of the present application.

[0031] Figure 2 It is a schematic side cross-sectional view of the airbag type silent pillow according to an embodiment of the present application.

[0032] Figure 3 It is a schematic connection structure diagram of the first folding airbag according to an embodiment of the present application.

[0033] Figure 4 It is a schematic structural diagram of the flow guiding part according to an embodiment of the present application.

[0034] Figure 5 It is a schematic structural diagram of the control valve according to an embodiment of the present application.

[0035] List of components and reference numerals:

[0036] 1. Headrest part, 2. Neckrest part, 3. First folding airbag, 4. Second folding airbag, 5. Pressure sensor, 6. Air pipe, 7. Sound insulation chamber, 8. Sound insulation cotton, 9. Sound insulation board, 10. Flow guiding column, 11. Flow guiding piece, 12. Air pump, 13. Control valve, 14. Main control circuit board, 15. Inflation valve, 16. Deflation valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The endpoints and any values within the ranges disclosed in this document are not limited to the exact ranges or values. These ranges or values should be understood to include values close to these ranges or values. For numerical ranges, the endpoint values of each range, between the endpoint values of each range and individual point values, and between individual point values can be combined with each other to obtain one or more new numerical ranges, and these numerical ranges should be considered to be specifically disclosed in this document.

[0038] For those not specified in the examples, they are carried out according to conventional conditions or conditions recommended by the manufacturer. For raw materials or instruments not specified in the manufacturer, they are all conventional products that can be obtained through commercial purchase.

[0039] As Figures 1-5 shown, the present application provides an airbag type silent pillow, including a latex pillow core. The latex pillow core includes a headrest part 1 and a neckrest part 2 which are integrally formed. The first folding airbag 3 is embedded in the headrest part 1 and the neckrest part 2, and the second folding airbag 4 is embedded in the neckrest part 2. The first folding airbag 3 surrounds the second folding airbag 4 on the peripheral side, and can provide targeted support according to different parts of the human body; pressure sensors 5 are arranged at the tops of the first folding airbag 3 and the second folding airbag 4, and air charging and discharging components are arranged at the bottoms of the first folding airbag 3 and the second folding airbag 4. The pressure sensors 5 are electrically connected to the air charging and discharging components, realizing the function of intelligently adjusting the softness and hardness of the airbag according to user needs, being convenient to use, and being able to adapt to different sleeping postures;

[0040] The air charging and discharging component includes an air pipe 6. A noise reduction component is arranged in the air pipe 6. The air pipe 6 is connected to the bottoms of the first folding airbag 3 and the second folding airbag 4 through the noise reduction component, effectively reducing the noise generated when gas enters and exits the airbag, improving the overall silent effect, and being beneficial to creating a quiet and comfortable sleeping environment; the noise reduction component includes a diversion part and a sound absorption part. The sound absorption part surrounds the diversion part on the peripheral side. The diversion part can direct the flowing gas in the diameter direction, enabling the noise to enter the sound absorption part without hindering the gas flow, so as to achieve the purpose of noise reduction.

[0041] Further, the sound absorption part includes a sound absorption chamber 7, a sound absorption cotton 8 and a sound absorption plate 9. The sound absorption plate 9 covers the opening of the sound absorption chamber 7 so that the sound absorption cotton 8 is filled in the sound absorption chamber 7. Through holes are arranged on the sound absorption plate 9; it can enable sound waves to enter the sound absorption chamber 7 and be reflected and attenuated multiple times in the sound absorption cotton 8, thereby reducing noise.

[0042] In the present application, the material of the sound absorption cotton 8 can be at least one of glass wool, polyester fiber cotton and rock wool. The present application does not limit the material of the sound absorption cotton 8, and it can be selected according to actual needs.

[0043] Furthermore, both ends of the flow guiding part are in the shape of grooves. The flow guiding part includes a flow guiding column 10 and a curved flow guiding piece 11. The flow guiding pieces 11 are evenly arranged on the outer periphery of the flow guiding column 10. One end of the flow guiding piece 11 far from the flow guiding column 10 is connected to the sound absorption plate 9; the structure is stable, which can guide the gas to flow in the flow guiding part and prevent the gas from hitting the flow guiding part when flowing in, thus generating noise.

[0044] Furthermore, the inflation and deflation assembly further includes an air pump 12 and a control valve 13. One end of the air pipe 6 far from the noise reduction assembly is connected to the air pump 12. The control valve 13 is connected in series on the air pipe 6; the air pump 12 inflates or deflates the airbag through the air pipe 6, and the control valve 13 precisely adjusts the air flow to ensure that the airbag can quickly and stably reach the target pressure, improving the user experience.

[0045] Furthermore, a main control circuit board 14 is arranged in the air pump 12. The main control circuit board 14 is electrically connected to the control valve 13 and the pressure sensor 5 respectively; the main control circuit board 14 can receive the data of the pressure sensor 5 in real time, precisely adjust the inflation and deflation operations of the air pump 12 and the gas flow direction, flow rate, etc. through the control valve 13, and dynamically adjust the airbag pressure to ensure that the pillow always provides the best support.

[0046] Furthermore, a conversion module for inflation and deflation is installed in the control valve 13. The conversion module includes an inflation valve 15 and a deflation valve 16. The main control circuit board 14 is electrically connected to the inflation valve 15 and the deflation valve 16 respectively; the main control circuit board 14 can intelligently switch the working states of the inflation valve 15 and the deflation valve 16 according to the data of the pressure sensor 5, and quickly adjust the airbag pressure to ensure that the height and hardness of the pillow always adapt to the user's needs.

[0047] When pressure is applied to the top of the first folding airbag 3 and / or the second folding airbag 4, the pressure sensor 5 transmits a piezoelectric signal to the main control circuit board 14. The main control circuit board 14 analyzes the piezoelectric signal and drives the inflation and deflation assembly to work. During inflation, the conversion module on the control valve 13 rotates to connect the inflation valve 15 with the air pipe 6. The air pump 12 works to transport gas into the first folding airbag 3 and / or the second folding airbag 4. When the pressure sensor 5 senses that the pressure disappears and deflation is required, the conversion module on the control valve 13 rotates to connect the deflation valve 16 with the air pipe 6. The air pump 12 stops working, and the gas in the first folding airbag 3 and / or the second folding airbag 4 is released.

[0048] During the operation of the airbag - type multifunctional pillow, the air pump 12 provides air source and transports gas to the first folding airbag 3 and the second folding airbag 4 through the air pipe 6. The pressure sensor 5 detects the pressures of the first folding airbag 3 and the second folding airbag 4 in real - time and transmits signals to the main control circuit board 14. The main control circuit board 14 analyzes the signals according to the preset logic and issues control instructions to drive the opening and closing of the inflation valve 15 or the deflation valve 16, so that the gas enters or exits the first folding airbag 3 and the second folding airbag 4 through the noise - reduction component, thereby realizing the adjustment of the air pressure in the first folding airbag 3 and the second folding airbag 4 to adapt to the depth of the cervical physiological curve, enabling the human body to be fully relaxed in a quiet environment and being beneficial to improving the sleep quality.

[0049] In this application, the preset logic in the main control circuit board 14 is prior art and will not be described in detail here.

[0050] The manufacturing method of the airbag - type silent pillow will be further described below with reference to the examples and comparative examples.

[0051] Example 1

[0052] A manufacturing method of an airbag - type silent pillow includes the following steps:

[0053] (1) Dissolve cetyltrimethylammonium bromide in a mixed solution of ethanol, ammonia water and distilled water with a volume ratio of 1.5:1.1:1, and stir at 25 °C for 1 h; then add tetraethyl orthosilicate and continue stirring until a sol is formed; age the sol at 90 °C for 20 h, then add it to a mixed solution of ethanol and hydrochloric acid with a volume ratio of 8:1 at 55 °C and stir for 20 h, and then filter, wash and dry to obtain mesoporous silica.

[0054] (2) Disperse 3 wt% mesoporous silica in tetrahydrofuran at 40 °C and reflux for 4 h to obtain a mixed solution A.

[0055] (3) Dissolve polyurethane and nitrile rubber with a mass ratio of 1:1 in tetrahydrofuran, then add the mixed solution A, stir at room temperature for 4 h, and then stir at 40 °C for 5 h to obtain a mixed solution B.

[0056] (4) Dissolve 0.8 wt% sulfur, 4 wt% zinc oxide, 0.3 wt% stearic acid, 0.5 wt% accelerator ZDC and 0.5 wt% accelerator MBT in tetrahydrofuran and ultrasonically treat for 3 min, then add them to the mixed solution B and stir at 40 °C for 20 min to obtain a mixed solution C.

[0057] (5) Cast the mixed solution C into a glass petri dish, vacuum - dry at 50 °C for 4 h, then carry out mixing at room temperature and mold at 140 °C to obtain the first folding airbag and the second folding airbag.

[0058] (6) Connect both the first folded airbag and the second folded airbag to a pressure sensor and an inflation / deflation assembly, and then assemble them inside a latex pillow core to obtain an airbag type silent pillow;

[0059] Among them, the mass ratio of cetyltrimethylammonium bromide to tetraethyl orthosilicate is 1:1.5.

[0060] Example 2

[0061] A manufacturing method of an airbag type silent pillow, comprising the following steps:

[0062] (1) Dissolve cetyltrimethylammonium bromide in a mixed solution of ethanol, ammonia water and distilled water with a volume ratio of 1.8:1.3:1, and stir at 40 °C for 3 h; then add tetraethyl orthosilicate and continue stirring until a sol is formed; age the sol at 105 °C for 30 h, and then add it to a mixed solution of ethanol and hydrochloric acid with a volume ratio of 10:1 at 70 °C and stir for 30 h, and then filter, wash and dry to obtain mesoporous silica;

[0063] (2) Disperse 8 wt% mesoporous silica in tetrahydrofuran at 60 °C and reflux for 8 h to obtain a mixed solution A;

[0064] (3) Dissolve polyurethane and nitrile rubber with a mass ratio of 1:2 in tetrahydrofuran, then add the mixed solution A, stir at room temperature for 8 h, and then stir at 60 °C for 10 h to obtain a mixed solution B;

[0065] (4) Dissolve 1.5 wt% sulfur, 6 wt% zinc oxide, 0.7 wt% stearic acid, 0.7 wt% accelerator ZDC and 1.3 wt% accelerator MBT in tetrahydrofuran and ultrasonically treat for 8 min, then add it to the mixed solution B and stir at 60 °C for 40 min to obtain a mixed solution C;

[0066] (5) Cast the mixed solution C into a glass petri dish, vacuum dry at 65 °C for 8 h, then carry out mixing at room temperature, and mold at 150 °C to obtain the first folded airbag and the second folded airbag;

[0067] (6) Connect both the first folded airbag and the second folded airbag to a pressure sensor and an inflation / deflation assembly, and then assemble them inside a latex pillow core to obtain an airbag type silent pillow;

[0068] Among them, the mass ratio of cetyltrimethylammonium bromide to tetraethyl orthosilicate is 1:3.

[0069] Example 3

[0070] A manufacturing method of an airbag type silent pillow, comprising the following steps:

[0071] (1) Dissolve cetyltrimethylammonium bromide in a mixed solution of ethanol, ammonia water, and distilled water with a volume ratio of 1.7:1.2:1, and stir at 30 °C for 2 h; then add tetraethyl orthosilicate and continue stirring until a sol is formed; age the sol at 100 °C for 24 h, and then add it to a mixed solution of ethanol and hydrochloric acid with a volume ratio of 9:1 at 60 °C and stir for 24 h. After filtration, washing, and drying, mesoporous silica is obtained;

[0072] (2) Disperse 5 wt% mesoporous silica in tetrahydrofuran at 50 °C and reflux for 6 h to obtain a mixed solution A;

[0073] (3) Dissolve polyurethane and nitrile rubber with a mass ratio of 1:1.5 in tetrahydrofuran, then add the mixed solution A, stir at room temperature for 6 h, and then stir at 50 °C for 8 h to obtain a mixed solution B;

[0074] (4) Dissolve 1.2 wt% sulfur, 5 wt% zinc oxide, 0.5 wt% stearic acid, 0.6 wt% accelerator ZDC, and 0.9 wt% accelerator MBT in tetrahydrofuran and ultrasonically treat for 5 min, then add it to the mixed solution B and stir at 50 °C for 30 min to obtain a mixed solution C;

[0075] (5) Pour the mixed solution C into a glass petri dish, vacuum dry at 60 °C for 6 h, then carry out mixing at room temperature, and mold at 145 °C to obtain the first folded airbag and the second folded airbag;

[0076] (6) Connect both the first folded airbag and the second folded airbag to a pressure sensor and an inflation / deflation assembly, and then assemble them inside a latex pillow core to obtain an airbag type silent pillow;

[0077] Among them, the mass ratio of cetyltrimethylammonium bromide to tetraethyl orthosilicate is 1:2.

[0078] Comparative Example 1

[0079] A manufacturing method of an airbag type silent pillow, comprising the following steps:

[0080] (1) Disperse 5 wt% silica in tetrahydrofuran at 50 °C and reflux for 6 h to obtain a mixed solution A;

[0081] (2) Dissolve polyurethane and nitrile rubber with a mass ratio of 1:1.5 in tetrahydrofuran, then add the mixed solution A, stir at room temperature for 6 h, and then stir at 50 °C for 8 h to obtain a mixed solution B;

[0082] (3) Dissolve 1.2 wt% sulfur, 5 wt% zinc oxide, 0.5 wt% stearic acid, 0.6 wt% accelerator ZDC, and 0.9 wt% accelerator MBT in tetrahydrofuran, ultrasonically treat for 5 min, then add to the mixture B, and stir at 50 °C for 30 min to obtain mixture C;

[0083] (4) Cast mixture C into a glass petri dish, vacuum dry at 60 °C for 6 h, then carry out mixing at room temperature, and mold at 145 °C to obtain the first folding airbag and the second folding airbag;

[0084] (5) Connect both the first folding airbag and the second folding airbag to a pressure sensor and a charging and discharging assembly, and then assemble them inside a latex pillow core to obtain an airbag type silent pillow;

[0085] Among them, the mass ratio of cetyltrimethylammonium bromide to tetraethyl orthosilicate is 1:2.

[0086] Comparative Example 2

[0087] The difference from Example 3 is that step (5) is as follows:

[0088] Carry out mixing of mixture C at room temperature, and mold at 145 °C to obtain the first folding airbag and the second folding airbag.

[0089] Test the mechanical properties, airtightness, and sound insulation performance of the first folding airbag and the second folding airbag in Examples 1 - 3 and Comparative Examples 1 - 2, and the results are shown in Table 1.

[0090] Airtightness test: Fill a certain pressure of air, such as 0.2 MPa, into the first folding airbag and the second folding airbag, observe whether the pressure data table shows stability. If there is no leakage in the airbag after 30 min, the detection is qualified. If the display is lower than 0.2 MPa, it indicates that the airtightness of the airbag is unqualified.

[0091] Table 1

[0092] Test number Tensile strength MPa Elongation at break % Air tightness Sound insulation performance db Example 1 16.5 372 Qualified 36.1 Example 2 17.2 366 Qualified 35.3 Example 3 18.4 358 Qualified 33.6 Comparative example 1 13.6 405 Qualified 48.4 Comparative example 2 7.8 441 Unqualified 52.0

[0093] As can be seen from Table 1, the airbag type silent pillow prepared by the manufacturing method of the airbag type silent pillow of the present application not only achieves a silent effect and creates a quiet and comfortable sleep environment, but also has good airtightness, improves the durability and reliability of the pillow, thus meeting the user's needs.

[0094] As described above, these are only embodiments of the present application. The protection scope of the present application is not limited by these specific embodiments, but is determined by the claims of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the technical idea and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An airbag type silent pillow, characterized in that, The latex pillow core includes an integrally formed headrest portion and a neckrest portion, wherein the headrest portion and the neckrest portion are embedded with a first folded airbag, and the neckrest portion is embedded with a second folded airbag, wherein the first folded airbag is arranged around the second folded airbag, and pressure sensors are arranged on the tops of the first folded airbag and the second folded airbag, and inflation and deflation components are arranged on the bottoms of the first folded airbag and the second folded airbag, and the pressure sensor is electrically connected to the inflation and deflation components; The inflation and deflation assembly includes an air pipe, in which a noise reduction assembly is arranged, through which the air pipe is connected to the bottom of the first folding airbag and the second folding airbag, and the noise reduction assembly includes a guide part and a silencer part, and the silencer part is arranged around the guide part.

2. The airbag type silent pillow according to claim 1, characterized in that, The muffler part comprises a muffler chamber, muffler cotton and a muffler plate. The muffler plate cover is arranged at the mouth of the muffler chamber so that the muffler cotton can be filled in the muffler chamber. The muffler plate is provided with through holes.

3. The airbag type silent pillow according to claim 2, wherein Both ends of the guide part are groove-shaped. The guide part includes a guide column and a curved guide plate. The guide plates are evenly arranged on the outer periphery of the guide column. One end of the guide plate away from the guide column is connected to the silencer plate.

4. The airbag type silent pillow according to claim 1, wherein, The inflation and deflation assembly also includes an air pump and a control valve. One end of the air pipe away from the noise reduction assembly is connected to the air pump, and the control valve is connected and arranged on the air pipe.

5. The airbag type silent pillow according to claim 4, characterized in that A main control circuit board is arranged in the air pump, and the main control circuit board is electrically connected to the control valve and the pressure sensor respectively.

6. The manufacturing method of the airbag type silent pillow according to any one of claims 1-5, characterized in that, The following steps are involved: (1) dispersing mesoporous silica in tetrahydrofuran at 40-60° C. and reflux for 4-8 hours to obtain a mixed solution A; (2) dissolving polyurethane and nitrile rubber in a mass ratio of 1:(1-2) in tetrahydrofuran, then adding mixed solution A, stirring at room temperature for 4-8 hours, and then stirring at 40-60° C. for 5-10 hours to obtain mixed solution B; (3) 0.8-1.5 wt% sulfur, 4-6 wt% zinc oxide, 0.3-0.7 wt% stearic acid, and 1-2 wt% composite vulcanization accelerator are dissolved in tetrahydrofuran and ultrasonically treated for 3-8 min, then added to mixed solution B, and stirred at 40-60° C. for 20-40 min to obtain mixed solution C; (4) Casting the mixed solution C into a glass culture dish, vacuum drying at 50-65° C. for 4-8 h, then kneading at room temperature, and compression molding at 140-150° C. to obtain a first folded airbag and a second folded airbag; (5) The first folding airbag and the second folding airbag are connected to the pressure sensor and the inflation and deflation assembly, and then assembled in a latex pillow core to obtain an airbag-type silent pillow.

7. The manufacturing method of the airbag type silent pillow according to claim 6, characterized in that, The added amount of the mesoporous silica is 3-8 wt %.

8. The manufacturing method of the airbag type silent pillow according to claim 6, characterized in that, The mesoporous silica is prepared by the following method: Cetyltrimethylammonium bromide is dissolved in a mixed solution of ethanol, ammonia water and distilled water with a volume ratio of (1.5 - 1.8):(1.1 - 1.3):1, and stirred at 25 - 40 °C for 1 - 3 h; then tetraethyl orthosilicate is added and stirring is continued until a sol is formed; the sol is aged at 90 - 105 °C for 20 - 30 h, and then added to a mixed solution of ethanol and hydrochloric acid with a volume ratio of (8 - 10):1 at 55 - 70 °C and stirred for 20 - 30 h, and then filtered, washed and dried to obtain mesoporous silica.

9. The manufacturing method of the airbag type silent pillow according to claim 8, characterized in that, The mass ratio of the cetyltrimethylammonium bromide to the tetraethyl orthosilicate is 1:(1.5 - 3).

10. The manufacturing method of the airbag type silent pillow according to claim 6, characterized in that, The compound vulcanization accelerator is accelerator ZDC and accelerator MBT with a mass ratio of 1:(1 - 2).

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