CN213501974U - Negative pressure air bag and negative pressure air bag waist support - Google Patents
Negative pressure air bag and negative pressure air bag waist support Download PDFInfo
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- CN213501974U CN213501974U CN202021757025.3U CN202021757025U CN213501974U CN 213501974 U CN213501974 U CN 213501974U CN 202021757025 U CN202021757025 U CN 202021757025U CN 213501974 U CN213501974 U CN 213501974U
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Abstract
A negative pressure air bag and a negative pressure air bag waist support are provided, wherein the negative pressure air bag comprises an air bag foam core, an air bag and a mechanical valve; the air bag foam core is arranged in the air bag, and the air bag is connected with the mechanical valve and is communicated with the outside of the air bag through the mechanical valve; the protective sleeve is arranged outside the negative pressure air bag, and the negative pressure air bag which is provided with the air bag protective sleeve is fixed on the framework of the chair seat through the hasp and serves as a negative pressure air bag waist support. The negative pressure air bag of the utility model has simple structure, light weight and easy operation when in use; the negative pressure air bag waist support meets the adjustment requirements of different body sizes, and improves the comfort of maintaining sitting postures for a long time; the waist support overcomes the defects of complex structure, heavy weight and high cost of a mechanical or electromagnetic waist support, has the advantages of convenient inflation and deflation operation and high reliability, and has light weight.
Description
Technical Field
The utility model relates to the field of assembly technique, especially, relate to a negative pressure gasbag and negative pressure gasbag waist holds in palm.
Background
The seat is an important appliance in work and life, and not only needs to meet basic use requirements, but also needs to be designed for pursuing aesthetic property and comfort so as to fully relieve physical fatigue of people in use. When the chair is in a normal sitting position, the lumbar vertebra part of the spine is convex forwards, the sacrum is concave backwards, and the curved surface modeling of the chair back is adapted to the shape of the spine of a human body, so that the chair has the best supporting effect. Since the sitting posture requirements of different body sizes and the adjustment of the body posture in different states can cause damage to the body which keeps the sitting posture for a long time, the waist support needs to be adjusted adaptively.
The waist support of the existing seat can be divided into two types, one type is an adjustable waist support, when the seat is designed, a back cushion or a seat back is designed to be attached to a body so as to support the waist and relieve the stress of the waist, but the waist support can not meet the body requirements of all people because the waist support can not be adjusted; one type of the adjustable waist support comprises an external waist support, a mechanical waist support and a positive pressure air bag waist support, wherein the external waist support is fixed in shape, adjustable in vertical position and unadjustable in size, and is separated from the seat, so that the whole appearance and harmony are poor; the mechanical waist support can be adjusted manually or electrically, the structural design is complex, the weight is heavy, and the electromagnetic compatibility is also considered in the electric adjustment; when the positive pressure air bag waist support is inflated manually, the inflation speed is low, the operation is complex, and the problem of electromagnetic compatibility also needs to be considered when the positive pressure air bag waist support is inflated electrically.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a negative pressure gasbag and negative pressure gasbag waist holds in palm to solve the aforementioned problem that exists among the prior art.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a negative pressure air bag comprises an air bag foam core, an air bag and a mechanical valve; the air bag foam core is made of high-resilience materials, is arranged in the air bag and supports the air bag to expand through self-resilience; the mechanical valve is connected with the air bag, the air bag is communicated with the external environment, and the air circulation between the air bag and the outside is controlled by opening and closing the mechanical valve.
Preferably, the air bag is provided with an air tap, the mechanical valve is connected with a locking female joint, and the air tap is connected with the locking female joint through a hose; the size of the interface of the mechanical valve is consistent with that of the lock female joint, and the mechanical valve is connected by winding a raw material belt; the hose is made of polyurethane flame-retardant materials, and the size of the hose is consistent with that of the air faucet and the locking female joint.
Preferably, the air bag foam core is made of high-resilience polyurethane foam materials through a wire cutting machine and a profile cutting machine frame.
Preferably, the airbag is made of a fabric with the characteristics of flame retardance, air tightness and high strength, and the fabric is welded by a high-frequency ultrasonic welding machine.
Preferably, the pressure-sensitive device is further included, and the pressure-sensitive device controls the opening and closing of the mechanical valve; when the pressure difference value between the air pressure in the air bag and the air pressure of the external environment exceeds a preset pressure difference value, the pressure sensing device controls the mechanical valve to be opened and controls the air inlet or the air outlet of the air bag until the pressure sensing device detects that the pressure difference value between the air pressure in the air bag and the air pressure of the external environment is smaller than or equal to the preset pressure difference value, and the pressure sensing device controls the mechanical valve to be closed.
Preferably, the airbag protection sleeve is arranged outside the airbag and closely sleeved on the outer surface of the airbag.
The utility model provides a negative pressure gasbag waist holds in palm, includes the negative pressure gasbag, still includes the gasbag protective sheath, be provided with the hasp on the gasbag protective sheath, through the hasp will be equipped with the gasbag protective sheath the negative pressure gasbag is fixed in on the seat skeleton.
Preferably, the gasbag protective sheath adopts fire-retardant and high strength's cloth to utilize the double seam line to sew, the back of gasbag protective sheath is sealed the department and is adopted the fire-retardant hasp of 50mm width to seal, and through two the hasp will negative pressure gasbag waist holds in the palm and is fixed in on the seat skeleton.
Preferably, the mechanical valve is fixed to the side of the seat frame.
Preferably, the negative pressure air bag waist support can bear the pressure difference of 100 kilopascals at most.
The utility model has the advantages that: the negative pressure air bag of the utility model has simple structure, light weight and easy operation when in use; the pressure sensing device can ensure that the negative pressure air bag can be suitable for the environment with any atmospheric pressure; the negative pressure air bag waist support meets the adjustment requirements of different body sizes, and improves the comfort of maintaining sitting postures for a long time; the waist support overcomes the defects of complex structure, heavy weight and high cost of a mechanical or electromagnetic waist support, has the advantages of convenient inflation and deflation operation and high reliability, and has light weight.
Drawings
FIG. 1 is a schematic view of the overall structure of a waist support of a negative pressure air bag;
in the figure: 1-gasbag foam core, 2-gasbag, 3-gasbag protective sheath, 4-hose, 5 lock female joint, 6-mechanical valve, 7-hasp.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.
A negative pressure air bag is shown in figure 1, and comprises an air bag foam core 1, an air bag 2 and a mechanical valve 6, wherein the air bag foam core 1 is made of high-resilience materials, is arranged inside the air bag 2, and supports the air bag 2 to expand outwards through self-resilience; the air bag 2 is welded by a high-frequency ultrasonic welding machine to form a closed cavity; the mechanical valve 6 is connected with the air bag 2, the air bag 2 is communicated with the external environment, and the air circulation between the air bag 2 and the external environment is controlled by opening and closing the mechanical valve 6; when the pressure on the air bag 2 disappears, the resilience force of the air bag foam core 1 supports the air bag 2 to expand outwards, the mechanical valve 6 is opened, air flows into the air bag 2, and the compressed air bag 2 is accelerated to expand and expand.
The negative pressure air bag further comprises a pressure sensing device, a pressure sensing part in the pressure sensing device detects the air pressure difference between the air bag 2 and the external environment, and an execution part in the pressure sensing device controls the opening and closing of the mechanical valve 6; the pressure sensing device is provided with an air pressure difference threshold value inside and outside the air bag 2, when the air bag 2 is pressurized, the air pressure inside the air bag 2 is increased, the pressure sensing device detects that the air pressure difference inside and outside the air bag 2 is greater than the air pressure difference threshold value, the pressure sensing device controls the mechanical valve 6 to be opened, the air inside the air bag 2 flows out, and the mechanical valve 6 is closed until the pressure sensing device detects that the air pressure difference inside and outside the air bag 2 is smaller than the air pressure difference threshold value; when the pressure on the air bag 2 disappears, the resilience force of the air bag foam core 1 enables the air bag 2 to expand, the air pressure value inside the air bag 2 becomes small, the pressure sensing device detects that the air pressure difference between the inside and the outside of the air bag 2 is larger than the air pressure difference threshold value, the pressure sensing device controls the mechanical valve 6 to be opened, air flows into the air bag 2, and the mechanical valve 6 is closed until the pressure sensing device detects that the air pressure difference between the inside and the outside of the air bag 2 is smaller than the air pressure difference threshold value.
An air faucet is arranged on the air bag 2, threads on the mechanical valve 6 are connected with a locking female connector 5, and the air faucet is connected with the locking female connector 5 through a hose 4 so as to connect the air bag and the mechanical valve.
Negative pressure gasbag still includes gasbag protective sheath 3, gasbag protective sheath 3 install in outside the gasbag, it is right gasbag 2 plays the guard action, can prevent gasbag 2 is by sharp-pointed article fish tail, works as atmospheric pressure in the gasbag 2 is higher than during the outer atmospheric pressure of gasbag 2, 2 expansions of gasbag, gasbag protective sheath 3 can offset the partial pressure of gasbag avoids the destruction of pressure differential to 2 material strength of gasbag, welding strength, bonding strength.
The air bag foam core 1 is made of a high-resilience polyurethane foam material and is processed by a linear cutting machine and a profiling cutting machine; the air faucet is bonded on the cloth of the air bag 2 by glue; the pressure sensing device is a mechanical sensing device and is fixed between the air bag 2 and the atmosphere; the airbag protection sleeve 3 is patched using double stitches.
The working principle of the negative pressure air bag is as follows: the negative pressure air bag is pressed and compressed through external force, the air bag foam core 1 is compressed, the mechanical valve is opened to exhaust air outwards until the air pressure difference between the inside and the outside of the air bag is smaller than an air pressure difference threshold value, and the mechanical valve is closed; when the external force disappears, the air bag foam core 1 begins to rebound automatically, the mechanical valve 6 opens air to enter the air bag 2 until the air bag is fully expanded, the air pressure difference between the inside and the outside of the air bag is smaller than the air pressure difference threshold value, and the mechanical valve is closed. The negative pressure air bag is controlled by the mechanical valve 6 to be adjusted so as to meet the requirements of users and meet the use requirements of all users.
The utility model provides a negative pressure gasbag waist holds in palm adopts the theory of operation of above-mentioned negative pressure gasbag the back sewing of gasbag protective sheath 3 has hasp 7, utilizes hasp 7 is right gasbag protective sheath 3 seals, and through hasp 7 is fixed in on the seat skeleton.
A rated pressure difference value is set in the pressure sensing device in advance, when the air pressure difference between the inside and the outside of the negative pressure air bag exceeds the rated pressure difference value, the pressure sensing device automatically controls the mechanical valve 6 to be opened so that the air bag 2 is communicated with the atmosphere, air in and out of the air bag is achieved, and when the air pressure difference between the inside and the outside of the negative pressure air bag is smaller than the rated pressure difference value, the pressure sensing device controls the mechanical valve 6 to be closed.
Examples
In the negative pressure air bag waist support in the embodiment, the air bag foam core 1 is made of high-resilience polyurethane foam material by a wire cutting machine and a contour cutting machine; the airbag 2 adopts cloth with the characteristics of flame retardance, air tightness and high strength, and the cloth is welded into a closed cavity by a high-frequency ultrasonic welding machine; the size of an interface of the mechanical valve 6 is consistent with that of the lock female joint 5, the mechanical valve 6 is connected by winding a raw material belt, and the mechanical valve 6 is fixed on the side face of the seat framework; the hose 4 is made of polyurethane flame-retardant materials, and the size of the hose is consistent with that of the air faucet and the locking female joint 5; the air bag protective sleeve 3 is formed by sewing flame-retardant and high-strength cloth through double sewing threads, two flame-retardant hasps 7 with the width of 50mm are sewn at the sealing position of the back to seal, and the negative pressure air bag waist support is fixed on the framework of the seat through the hasps 7. The negative pressure air bag can bear the pressure difference of 100 kilopascals, and meanwhile, the requirement of the air tightness of the whole device can be met.
Through adopting the utility model discloses an above-mentioned technical scheme has obtained following profitable effect:
the negative pressure air bag of the utility model has simple structure, light weight and easy operation when in use; the pressure sensing device can ensure that the negative pressure air bag can be suitable for the environment with any atmospheric pressure; the negative pressure air bag waist support meets the adjustment requirements of different body sizes, and improves the comfort of maintaining sitting postures for a long time; the waist support overcomes the defects of complex structure, heavy weight and high cost of a mechanical or electromagnetic waist support, has the advantages of convenient inflation and deflation operation and high reliability, and has light weight.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be viewed as the protection scope of the present invention.
Claims (10)
1. A negative pressure air bag is characterized by comprising an air bag foam core, an air bag and a mechanical valve; the air bag foam core is made of high-resilience materials, is arranged in the air bag and supports the air bag to expand through self-resilience; the mechanical valve is connected with the air bag, the air bag is communicated with the external environment, and the air circulation between the air bag and the outside is controlled by opening and closing the mechanical valve.
2. The negative-pressure air bag according to claim 1, wherein an air tap is mounted on the air bag, the mechanical valve is connected with a locking female connector, and the air tap is connected with the locking female connector through a hose; the size of the interface of the mechanical valve is consistent with that of the lock female joint, and the mechanical valve is connected by winding a raw material belt; the hose is made of polyurethane flame-retardant materials, and the size of the hose is consistent with that of the air faucet and the locking female joint.
3. The negative pressure airbag of claim 1, wherein the airbag foam core is constructed using a high resilience polyurethane foam material with a wire cutter and a contour cutter frame.
4. The negative pressure airbag according to claim 1, wherein the airbag is made of a cloth material having characteristics of flame retardancy, airtightness and high strength, and the cloth material is welded by a high frequency ultrasonic welding machine.
5. The negative pressure air bag according to claim 1, further comprising a pressure sensing device that controls the opening and closing of the mechanical valve; when the pressure difference value between the air pressure in the air bag and the air pressure of the external environment exceeds a preset pressure difference value, the pressure sensing device controls the mechanical valve to be opened and controls the air inlet or the air outlet of the air bag until the pressure sensing device detects that the pressure difference value between the air pressure in the air bag and the air pressure of the external environment is smaller than or equal to the preset pressure difference value, and the pressure sensing device controls the mechanical valve to be closed.
6. The negative pressure airbag of claim 1, further comprising an airbag protective cover, wherein the airbag protective cover is mounted on the exterior of the airbag, and the airbag protective cover is tightly sleeved on the exterior surface of the airbag.
7. A negative pressure gasbag waist support is characterized by comprising the negative pressure gasbag and a gasbag protective sleeve according to any one of claims 1 to 5, wherein a hasp is arranged on the gasbag protective sleeve, and the negative pressure gasbag sleeved with the gasbag protective sleeve is fixed on a seat framework through the hasp.
8. The negative-pressure air bag waist support according to claim 7, wherein the air bag protective sleeve is made of flame-retardant and high-strength cloth and sewn by double sewing threads, a back sealing part of the air bag protective sleeve is sealed by a flame-retardant hasp with a width of 50mm, and the negative-pressure air bag waist support is fixed on the seat framework through the two hasps.
9. The negative pressure air bag lumbar support according to claim 7, wherein said mechanical valve is fixed to the side of said seat frame.
10. The negative pressure air bag lumbar support according to claim 7, wherein said negative pressure air bag lumbar support is capable of withstanding a pressure differential of up to 100 kilopascals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021757025.3U CN213501974U (en) | 2020-08-20 | 2020-08-20 | Negative pressure air bag and negative pressure air bag waist support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021757025.3U CN213501974U (en) | 2020-08-20 | 2020-08-20 | Negative pressure air bag and negative pressure air bag waist support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213501974U true CN213501974U (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021757025.3U Active CN213501974U (en) | 2020-08-20 | 2020-08-20 | Negative pressure air bag and negative pressure air bag waist support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213501974U (en) |
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2020
- 2020-08-20 CN CN202021757025.3U patent/CN213501974U/en active Active
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