Inflatable seat cushion with waist cushion

Abstract

The utility model relates to the technical field of inflatable seat cushions, in particular to an inflatable seat cushion with a waist cushion, which comprises an inflatable bin made of flexible materials, the inflatable bin comprises a first supporting portion and a second supporting portion which are connected through a communication channel, and when pressure borne by the first supporting portion is larger than that borne by the second supporting portion, the waist cushion is arranged in the inflatable bin. And gas in the first supporting part with high pressure flows into the second supporting part with low pressure through the communicating channel. Self-adaptive supporting is achieved, flowing of air between the first supporting part and the second supporting part is utilized, the waist supporting strength can be automatically adjusted according to the sitting posture and weight distribution of the human body, and more fit and comfortable supporting experience is provided; the waist support optimization is realized, and the gas flows from the first support part to the second support part of the waist, so that the waist support part is bulged, enough support force is provided for the waist, a good sitting posture can be kept, and the fatigue of the waist can be relieved.

Description

Technical Field

[0001] This utility model relates to the field of inflatable seat cushion technology, specifically an inflatable seat cushion with a lumbar support. Background Technology

[0002] Existing inflatable lumbar support cushions are limited by the material they are wrapped in, resulting in insufficient overall firmness and support for the lower back. To achieve good support, they need to be fully inflated, which places higher demands on the inflation device, increases costs, and makes storage inconvenient.

[0003] First, there is a contradiction between material and support. Traditional inflatable lumbar supports are limited by the characteristics of flexible materials (such as PVC and rubber film), resulting in insufficient overall rigidity after inflation. They need to be inflated to a high pressure to provide effective support. Second, the combination of existing technologies is prone to problems with the lack of dynamic adjustment. Most existing products adopt a fixed compartmentalized air chamber design (such as patent CN215604433U), which cannot automatically adjust the gas distribution according to changes in body pressure. While some lumbar support cushions achieve support through independent airbags (such as patent CN220676266U), they require manual operation of the air pump for adjustment, making it impossible to respond in real time to changes in sitting posture. Furthermore, there are issues with cost and convenience. To achieve sufficient support, existing technologies require high-pressure inflation devices (such as the external air storage device or compressor in patent CN105029953A), increasing product costs. Additionally, high inflation makes the cushion bulky and prone to creases and air leaks when folded for storage. Existing technologies also have structural design flaws; some solutions add independent lumbar support components to the outside of the cushion (such as the inflatable lumbar pillow in patent CN207416625U), but this split structure compromises the overall integrity of the cushion, making the lumbar support component prone to shifting and misalignment when the user sits down.

[0004] Therefore, this utility model provides an inflatable lumbar support cushion that, when the user sits down, causes most of the air in the cushion to move to the added part due to pressure, resulting in the part bulging and bending under high pressure to support the user's waist. Utility Model Content

[0005] In response to the problems of material inconsistencies and lack of dynamic adjustment, as well as structural design defects in existing technologies, an inflatable seat cushion with a lumbar support has been designed.

[0006] The technical solution adopted by this utility model to solve its technical problem is: an inflatable seat cushion with a lumbar support, comprising an inflatable chamber made of flexible material, wherein the inflatable chamber comprises a first support part and a second support part connected by a connecting channel, wherein when the pressure on the first support part is greater than that on the second support part, the gas in the first support part with greater pressure flows into the second support part with less pressure through the connecting channel.

[0007] Preferably, an air inlet is provided in the center of one side of the second support portion, and the air inlet is designed as a one-way sealed structure.

[0008] Preferably, the outer side of the air chamber is heat-sealed and formed with multiple sealing strips extending to the middle of the first support portion, so that after the cushion is inflated, an uneven contact surface is formed and the pressure on the air chamber is distributed.

[0009] Preferably, the middle part of the first support has multiple irregularly shaped perforated sections that conform to ergonomics, and the edges of the perforated sections are formed by hot pressing.

[0010] Preferably, a flow-limiting valve is provided in the connecting channel, which is configured such that when the first support is pressurized, the speed at which air flows into the second support is greater than the speed at which air flows into the first support when the second support is pressurized.

[0011] Preferably, the second support portion has at least one compacted portion formed by hot pressing in the middle.

[0012] Preferably, an auxiliary pressure strip is provided at the connection between the first support part and the second support part to strengthen the connection and assist bending. If the bending part is filled with air, it is inconvenient to bend. The auxiliary pressure strip is formed by hot pressing and sealing, which reduces the bending difficulty of the first support part and the second support part and enhances the strength of the bending part.

[0013] Preferably, the outer surface of the first support portion and / or the second support portion is provided with at least one transverse and / or longitudinal reinforcing rib.

[0014] The beneficial effects of this utility model are:

[0015] (1) This utility model realizes adaptive support. By utilizing the flow of gas between the first support part and the second support part, it can automatically adjust the lumbar support strength based on the human sitting posture and weight distribution, providing a more fitting and comfortable support experience.

[0016] (2) This utility model achieves lumbar support optimization. By allowing gas to flow from the first support part to the second support part of the waist, the lumbar support part bulges up, providing sufficient support for the waist, which helps maintain good sitting posture and reduce waist fatigue.

[0017] (3) This utility model realizes the rapid inflow and slow outflow of gas through the design of only the first support part, the second support part and the connecting channel. The structure is relatively simple and the support strength can change rapidly with pressure, making it highly adaptable. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 A schematic diagram of an inflatable seat cushion with a lumbar support in its inflated, folded state, provided by this utility model.

[0020] Figure 2 A schematic diagram of the inflatable folded state of an inflatable seat cushion with a lumbar support provided by this utility model;

[0021] Figure 3 A top sectional view of an inflatable seat cushion with a lumbar support provided by this utility model;

[0022] Figure 4 for Figure 3 Enlarged view of point A;

[0023] Figure 5 A cross-sectional lower view of an inflatable seat cushion with a lumbar support provided by this utility model;

[0024] Figure 6 for Figure 5 Enlarged view of point B;

[0025] Figure 7 This utility model provides a schematic diagram of the reinforcing rib structure of an inflatable seat cushion with a lumbar support.

[0026] In the diagram: 1. Inflation chamber; 11. Second support section; 12. First support section; 2. Inflation port; 3. Hollowed-out section; 4. Connecting channel; 5. Compacting section; 6. Sealing strip section; 7. Reinforcing rib; 8. Auxiliary strip section. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] Example 1: As Figures 1-7 As shown, the present invention provides an inflatable seat cushion with a lumbar support, comprising an air chamber 1 made of flexible material. The air chamber 1 includes a first support part 12 and a second support part 11 connected by a connecting channel 4. When the pressure on the first support part 12 is greater than that on the second support part 11, the gas in the first support part 12 with greater pressure flows into the second support part 11 with less pressure through the connecting channel 4.

[0029] Specifically, an air inlet 2 is provided in the center of one side of the second support part 11. The air inlet 2 is designed as a one-way sealing structure. The waist support part is subjected to less pressure (compared to the buttocks). The air inlet 2 is located here to reduce wear of the one-way sealing structure and air leakage caused by frequent compression.

[0030] In this embodiment, the inflation port 2 is designed similarly to the inflation port of a swimming ring. It typically employs a one-way valve or sealing device to allow gas to enter while preventing leakage. The specific principle is as follows:

[0031] Utilizing a one-way valve structure: when the air pump is inserted, the valve is opened, allowing air to enter the swimming ring; after the pump is removed, the valve automatically closes, using internal air pressure to achieve a seal; for example, the plastic sheet or rubber sheet at the bottom of the inflation port will stick together when there is no external force, preventing air from escaping;

[0032] Auxiliary sealing measures are used: After inflation, the cap (such as a rotating cap or rubber stopper) needs to be closed manually to further enhance the seal; some designs will have a leak-proof plastic plate at the base of the inflation port, which needs to be pinched tightly during inflation to ensure airtightness; this dual protection mechanism not only facilitates inflation operation, but also maintains air pressure stability when the seat is in use.

[0033] When deflation is required, it is usually necessary to manually press or use other tools to hold the valve plate of the one-way valve open to allow the air inside the swimming ring to escape. For example, you can insert your finger or a toothpick into the inflation hole to press the valve plate inward, or some swimming rings have a special deflation button on the inflation port. Pressing the button will open the valve plate and release the air. The existing technology known to those skilled in the art can be directly applied to this utility model and will not be described in detail here.

[0034] Specifically, the outer side of the air chamber 1 is heat-sealed and formed with multiple sealing strips 6 extending to the middle of the first support part 12, so that after the seat cushion is inflated, an uneven contact surface is formed, which enhances the friction with the buttocks and disperses the pressure on the air chamber 1.

[0035] Specifically, the first support part 12 has multiple irregularly shaped perforated sections 3 in the middle that conform to ergonomics. The edges of the perforated sections 3 are formed by hot pressing and sealing. The perforated sections 3 are breathable and prevent stuffiness, thus increasing comfort.

[0036] Specifically, a flow-limiting valve is installed in the connecting channel 4. This valve is configured such that when the first support part 12 is pressurized, the airflow rate into the second support part 11 is greater than the airflow rate into the first support part 12 when the second support part 11 is pressurized. The second support part 11 experiences greater pressure, causing air to slowly flow into the first support part 12, thus ensuring the stability of the waist support. Differential airflow control is achieved through valve structure optimization, preventing rapid gas backflow from interfering with the support effect. This embodiment provides the following... Figure 4 The specific structural design of the flow limiting valve shown can be replaced by other structures that can perform or are similar to this flow limiting valve.

[0037] Specifically, an auxiliary pressure strip 8 is provided at the connection between the first support part 12 and the second support part 11 to strengthen the connection and assist bending. If the bending part is filled with air, it is inconvenient to bend. The auxiliary pressure strip 8 can effectively reduce the difficulty of bending the first support part 12 and the second support part 11, facilitate bending, and enhance the strength of the bending part, making the bending part less likely to break.

[0038] Specifically, the second support part 11 has at least one compacted part 5 formed by hot pressing in the middle, so that the second support part 11 will not fit tightly against the user's waist, thus increasing breathability.

[0039] Example 2: Based on Example 1, the outer surface of the first support part 12 and / or the second support part 11 is provided with at least one transverse and / or longitudinal reinforcing rib 7 to increase structural stability and prevent the air chamber 1 from being excessively deformed under pressure.

[0040] Working principle: Initial state reference Figure 1 and Figure 2 During use, the air chamber 1 is inflated through the air inlet 2. Air first enters the second support section 11, and then gradually flows into the second support section 11 through the connecting channel 4. The state after being fully inflated is as follows: Figure 1 As shown, if the lumbar support function is needed, the inflatable seat cushion with lumbar support is placed on a chair with a backrest. The second support part 11 is folded upward so that it forms a right angle or obtuse angle with the first support part 12. When the user sits on the first support part 12, the weight of the human body is applied to the first support part 12, causing the gas inside the first support part 12 to flow into the second support part 11, which is under less pressure. At this time, the pressure inside the second support part 11 will also increase, thus providing better support for the user's waist. Even if the user moves their body, the gas inside the second support part 11 will not flow back to the first support part 12 quickly because the flow-limiting valve is set inside the connecting channel 4, ensuring the support effect. When it is necessary to deflate and store the device, the air in the inflation port 2 can be opened, allowing the gas inside the first support part 12 to flow back into the second support part 11 and out of the inflation chamber 1, achieving rapid deflation and storage.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An inflatable seat cushion with a lumbar support comprising an inflatable pocket (1) made of a flexible material, characterized in that: The air-filled chamber (1) comprises a first support part (12) and a second support part (11) connected by a communication channel (4), when the first support part (12) is under greater pressure than the second support part (11), the gas in the first support part (12) under greater pressure flows into the second support part (11) under smaller pressure through the communication channel (4).

2. An air type cushion with a waist pad according to claim 1, wherein: The second support part (11) is centrally provided with an air inlet (2) on one side, and the air inlet (2) is designed as a one-way sealing structure.

3. An air-filled seat cushion with a waist pad according to claim 1, wherein: The outer side of the air-filled chamber (1) is hot-pressed and formed into a plurality of sealing pressure strip parts (6) extending to the middle of the first support part (12), so that after the cushion is inflated, a concave-convex contact surface is formed to disperse the pressure borne by the air-filled chamber (1).

4. An air-filled seat cushion with a waist pad according to claim 3, wherein: The middle of the first support part (12) is provided with a plurality of annular irregular hollow parts (3) conforming to human mechanics, and the edges of the hollow parts (3) are hot-pressed and formed.

5. An air-filled seat cushion with a waist pad according to claim 1, wherein: The communication channel (4) is provided with a flow limiting valve, which is arranged so that the speed of air flowing into the second support part (11) when the first support part (12) is under pressure is greater than the speed of air flowing into the first support part (12) when the second support part (11) is under pressure.

6. An air-filled seat cushion with a waist pad according to claim 1, wherein: The middle of the second support part (11) is hot-pressed to form at least one compacted part (5).

7. An air-filled seat cushion with a waist pad according to claim 3, wherein: The connection between the first support part (12) and the second support part (11) is provided with an auxiliary pressure strip part (8) for reinforcing the connection and assisting in bending, and the auxiliary pressure strip part (8) is hot-pressed and formed, which reduces the bending difficulty of the first support part (12) and the second support part (11) and enhances the strength of the bending part.

8. An air-filled seat cushion with a lumbar support according to claim 7, wherein: The outer surface of the first support part (12) and / or the second support part (11) is provided with at least one transverse and / or longitudinal reinforcing rib (7).

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