CN214450482U - Pressure relief valve and buffer device for pressure relief and energy absorption of automobile seat backrest - Google Patents
Pressure relief valve and buffer device for pressure relief and energy absorption of automobile seat backrest Download PDFInfo
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- CN214450482U CN214450482U CN202022654439.XU CN202022654439U CN214450482U CN 214450482 U CN214450482 U CN 214450482U CN 202022654439 U CN202022654439 U CN 202022654439U CN 214450482 U CN214450482 U CN 214450482U
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Abstract
The utility model discloses a relief valve and buffer for car seat back pressure release energy absorption, the relief valve comprises pressure release blast pipe, seal ring, pressure release valve pipe, spring and lid, can open automatically when the pressure release threshold value is above in the air pocket by atmospheric pressure in the air pocket, realizes the automatic pressure release exhaust to the air pocket, has simple structure, the reliability is high, advantage with low costs. Buffer can be used to the pressure release energy-absorbing of car seat back, promptly: by adopting the air bag provided with the pressure release valve, the closed pressure release valve can ensure that the air bag provides stable backrest support for passengers when the automobile normally runs, and high-pressure air in the air bag can be exhausted through the opened pressure release valve under the action of impact force of the passengers when the automobile collides with the rear end, so that the impact energy of the passengers on the seat backrest is absorbed, and the buffer protection of the passengers when the automobile collides with the rear end is realized.
Description
Technical Field
The utility model relates to a car seat's safety device, specific relief valve and buffer that are used for car seat back pressure release to inhale energy that says so.
Background
When the automobile is in rear-end collision, most of impact energy is absorbed by the deformation of a seat framework in the traditional seat structure;
however, since the seat frame is very rigid, the impact between the occupant and the seat back is very large, and the risk of injury to the occupant is very high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a pressure relief valve and a buffer device for pressure relief and energy absorption of a backrest of an automobile seat are provided.
Solve above-mentioned technical problem, the utility model discloses the technical scheme who adopts as follows:
the utility model provides a relief valve for car seat back pressure release energy-absorbing which characterized in that includes: the pressure relief device comprises a pressure relief exhaust pipe, a sealing washer, a pressure relief valve pipe, a spring and a cover body; the air inlet of the pressure relief exhaust pipe is communicated with the air bag; the pressure relief valve pipe is connected by the pressure release pipe and seals the board and constitute, seal the board and seal the gas outlet of pressure release pipe, the pipe wall of pressure release pipe is equipped with disappointing hole, seal ring suit is in outside the pressure release pipe, the pressure release pipe is followed the gas outlet of pressure release blast pipe insert and with the lumen sliding fit of pressure release blast pipe, the lid with pressure release blast pipe fixed connection, the spring supports the top the lid with seal between the board for: and under the action of the spring force of the spring, the sealing plate presses the sealing washer on the air outlet of the pressure relief exhaust pipe.
Preferably: the outer wall of the pressure relief exhaust pipe at the air inlet is provided with a connecting sheet, and the connecting sheet is positioned in the air bag and is fixedly bonded with the inner wall of the air bag.
Preferably: the cover body is formed by connecting a cover plate and a plurality of clamping pieces which are arranged at intervals, a boss is arranged on the outer wall of the pressure relief exhaust pipe, each clamping piece of the cover body is respectively connected with the boss of the pressure relief exhaust pipe in a clamping mode, the sealing washer, the pressure relief valve pipe and the spring are located in the inner cavity of the cover body, and the spring is abutted against the cover plate and the sealing plate. Therefore, after the high-pressure gas is discharged from the air leakage hole of the pressure relief pipe, the high-pressure gas is discharged to the outside through the space between the two adjacent buckling pieces.
A cushioning device for pressure relief and energy absorption of a seat back of an automobile comprises: the air bag and a pressure release valve arranged on the air bag; the automobile seat back pressure relief energy absorption device is characterized in that the pressure relief valve is used for relieving pressure and absorbing energy of the automobile seat back so that: the pressure release valve is closed when the air pressure in the air bag is smaller than a preset pressure release threshold value, and is opened when the air pressure in the air bag is higher than the pressure release threshold value.
Therefore, the air bag, the pipe cavity of the pressure relief exhaust pipe and the pipe cavity of the pressure relief pipe are communicated in sequence. Referring to fig. 7, atmospheric pressure in the air pocket is less than when the predetermined pressure release threshold value, and high-pressure gas is right in the air pocket the pressure of sealing plate is less than the spring force of spring, makes seal ring keeps being compressed tightly by the sealing plate on the gas outlet of pressure release blast pipe, the pressure release pipe is pressed into in the lumen of pressure release blast pipe and both hug closely mutually, the order the hole of loosing heart of pressure release pipe is by pressure release blast pipe shutoff, at this moment, the relief valve is in the off-state, high-pressure gas in the air pocket can not take place to leak. Referring to fig. 8, as the air pressure in the air bag rises, the pressure of the high-pressure gas in the air bag on the sealing plate overcomes the spring force of the spring, so that the pressure relief valve pipe is gradually ejected by the air pressure until the air pressure in the air bag is above the pressure relief threshold, the air release hole of the pressure relief pipe is ejected to the outside of the pipe cavity of the pressure relief exhaust pipe, at this time, the pressure relief valve is in an open state, and the high-pressure gas in the air bag sequentially passes through the pipe cavity of the pressure relief exhaust pipe, the pipe cavity of the pressure relief pipe and the air release hole of the pressure relief pipe to be discharged to the outside, so that the air exhaust of the air bag is realized.
And selecting the rigidity of the spring according to the value requirements of the initial air pressure and the pressure relief threshold of the air bag.
The pipe wall of the pressure relief pipe can be provided with a plurality of air release holes which are arranged around the axis of the pressure relief pipe at intervals so as to accelerate the exhaust speed.
Therefore, the utility model discloses a buffer can be applied to the pressure release energy-absorbing of car seat back, also promptly:
the air bag is arranged in the seat back, when the automobile runs normally, the air pressure in the air bag is smaller than a pressure relief threshold value, and the pressure relief valve is kept closed, so that the air bag with stable air pressure can provide stable back support for passengers; when the automobile has rear-end collision, the passenger impacts the seat backrest backwards to compress the air bag, the air pressure in the air bag rises along with the air bag, and the pressure relief valve is opened when the air pressure in the air bag rises above the pressure relief threshold, so that the high-pressure air in the air bag is discharged through the pressure relief valve under the action of the impact force of the passenger, the impact energy of the passenger on the seat backrest is absorbed, and the buffer protection of the passenger when the automobile has rear-end collision is realized; and when the automobile collides at a medium and low speed, the automobile seat framework can be prevented from deforming through pressure relief, energy absorption and buffering of the air bag, and the automobile seat framework is favorable for reducing the maintenance cost of the automobile.
Preferably: the air pressure of the air bag when the air bag is not compressed is recorded as initial air pressure, the value of the initial air pressure is between 0.15MPa and 0.3MPa, the value of the pressure relief threshold value is between 0.25MPa and 0.35MPa, the value of the pressure relief threshold value is larger than that of the initial air pressure, and the value difference value is between 0.05MPa and 0.1 MPa.
Through experimental, according to the value mode of above-mentioned initial atmospheric pressure and pressure release threshold value, can satisfy when supporting the passenger's back, ensure the utility model discloses play the effect of buffering protection to the passenger in the collision accident of most car rear-end collisions.
Preferably: the high-pressure gas in the air bag can be air, but preferably, a gas with higher density than air, such as carbon dioxide, is used to increase the impact energy of the occupant on the seat back, which can be absorbed when the air bag discharges the high-pressure gas.
Preferably: the inner wall of the air bag is provided with a plurality of pull belts at uniform intervals, so that the air bag can keep the shape of the air bag per se under the condition that high-pressure gas is filled in the air bag, and the risk of breakage is reduced.
The pressure relief valve may be disposed at any position on the airbag as long as a sufficient space is secured for venting the pressure relief valve, but it is generally not recommended that the pressure relief valve face the backrest foam of the seat backrest so as not to affect the comfort of the backrest of the occupant. The shape of the air pocket is not limited, and a square or an oval shape is preferable.
Compared with the prior art, the utility model discloses following beneficial effect has:
first, the utility model discloses a relief valve by pressure release blast pipe, seal ring, pressure release valve pipe, spring and lid are constituteed can be opened when the pressure release threshold value is above automatic at the atmospheric pressure in the air pocket, realizes having simple structure, the reliability is high, advantage with low costs to the automatic pressure release exhaust of air pocket.
Second, the utility model discloses a buffer can be used for the pressure release energy-absorbing of car seat back, promptly: by adopting the air bag provided with the pressure release valve, the closed pressure release valve can ensure that the air bag provides stable backrest support for passengers when the automobile normally runs, and high-pressure air in the air bag can be exhausted through the opened pressure release valve under the action of impact force of the passengers when the automobile collides with the rear end, so that the impact energy of the passengers on the seat backrest is absorbed, and the buffer protection of the passengers when the automobile collides with the rear end is realized.
Third, the utility model discloses the value mode of initial atmospheric pressure and pressure release threshold value that adopts can be when satisfying to support the passenger back, ensures the utility model discloses a buffer plays the effect of buffer protection to the passenger in most car collision accidents that knocks into the back.
Drawings
The invention will be described in further detail with reference to the following drawings and specific embodiments:
FIG. 1 is a schematic structural view of a car seat with a cushion device of the present invention installed thereon;
FIG. 2 is a schematic structural view of the car seat without the buffering device of the present invention;
FIG. 3 is a schematic view of the buffering device of the present invention in a normal driving state;
FIG. 4 is a schematic view of the buffer device of the present invention in a rear-end collision of an automobile;
fig. 5 is an exploded view of the structure of the buffering device of the present invention;
fig. 6 is an exploded view of a cross-sectional structure of the pressure release valve of the present invention;
fig. 7 is a cross-sectional view of the pressure relief valve of the present invention when closed;
fig. 8 is a cross-sectional view of the pressure relief valve of the present invention when opened.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and the accompanying drawings to help those skilled in the art to better understand the concept of the present invention, but the scope of the claims of the present invention is not limited to the following embodiments, and all other embodiments obtained without creative work for those skilled in the art will fall within the scope of the present invention without departing from the scope of the present invention.
Example one
As shown in fig. 5 to 8, the utility model discloses a relief valve for car seat back pressure release energy-absorbing, a serial communication port, include: the pressure relief device comprises a pressure relief exhaust pipe 3-1, a sealing washer 3-2, a pressure relief valve pipe 3-3, a spring 3-4 and a cover body 3-5; the air inlet 3-1a of the pressure relief exhaust pipe 3-1 is communicated with the air bag 2; the pressure relief valve pipe 3-3 is formed by connecting a pressure relief pipe 3-3-1 and a sealing plate 3-3-2, the sealing plate 3-3-2 seals an air outlet of the pressure relief pipe 3-3-1, a gas release hole 3-3-1b is formed in the pipe wall of the pressure relief pipe 3-3-1, a sealing washer 3-2 is sleeved outside the pressure relief pipe 3-3-1, the pressure relief pipe 3-3-1 is inserted from the air outlet 3-1b of the pressure relief exhaust pipe 3-1 and is in sliding fit with a pipe cavity of the pressure relief exhaust pipe 3-1, the cover body 3-5 is fixedly connected with the pressure relief exhaust pipe 3-1, and the spring 3-4 is abutted between the cover body 3-5 and the sealing plate 3-3-2, such that: under the action of the spring force of the spring 3-4, the sealing plate 3-3-2 presses the sealing washer 3-2 on the air outlet 3-1b of the pressure relief exhaust pipe 3-1.
The above is a basic implementation manner of the first embodiment, and further optimization, improvement and limitation may be performed on the basis of the basic implementation manner:
preferably: the outer wall of the pressure relief exhaust pipe 3-1 at the air inlet 3-1a is provided with a connecting sheet 3-1-1, and the connecting sheet 3-1-1 is positioned in the air bag 2 and is fixedly bonded with the inner wall of the air bag 2.
Preferably: the cover body 3-5 is formed by connecting a cover plate 3-5-1 and a plurality of clamping pieces 3-5-2 arranged at intervals, a boss 3-1-2 is arranged on the outer wall of the pressure relief exhaust pipe 3-1, each clamping piece 3-5-2 of the cover body 3-5 is respectively connected with the boss 3-1-2 of the pressure relief exhaust pipe 3-1 in a clamping mode, the sealing washer 3-2, the pressure relief valve pipe 3-3 and the spring 3-4 are all located in the inner cavity of the cover body 3-5, and the spring 3-4 abuts against the space between the cover plate 3-5-1 and the sealing plate 3-3-2. Therefore, after being discharged from the air release hole 3-3-1b of the pressure release pipe 3-3-1, the high-pressure gas is discharged to the outside through the space between the two adjacent buckling pieces 3-5-2.
Example two
As shown in fig. 1 to 4, the second embodiment discloses a buffer device for pressure relief and energy absorption of a backrest of an automobile seat, which includes: an air bag 2 and a pressure release valve 3 mounted on the air bag 2; the pressure release valve 3 is the pressure release valve for the pressure release and energy absorption of the backrest of the automobile seat in the first embodiment, so that: the pressure release valve 3 is closed when the air pressure in the air bag 2 is smaller than a preset pressure release threshold value, and is opened when the air pressure in the air bag 2 is higher than the pressure release threshold value.
Therefore, the air bag 2, the pipe cavity of the pressure relief exhaust pipe 3-1 and the pipe cavity of the pressure relief pipe 3-3-1 are communicated in sequence. Referring to fig. 7, when the air pressure in the air bag 2 is smaller than a preset pressure relief threshold, the pressure of the high-pressure gas in the air bag 2 on the sealing plate 3-3-2 is smaller than the spring force of the spring 3-4, so that the sealing washer 3-2 is kept pressed by the sealing plate 3-3-2 on the air outlet 3-1b of the pressure relief exhaust pipe 3-1, the pressure relief pipe 3-3-1 is pressed into the pipe cavity of the pressure relief exhaust pipe 3-1 and is tightly attached to the pipe cavity, the air release hole 3-3-1b of the pressure relief pipe 3-3-1 is blocked by the pressure relief exhaust pipe 3-1, and at this time, the pressure relief valve 3 is in a closed state, and the high-pressure gas in the air bag 2 cannot leak. Referring to fig. 8, as the air pressure in the air bag 2 increases, the pressure of the high-pressure air in the air bag 2 on the sealing plate 3-3-2 overcomes the spring force of the spring 3-4, so that the pressure relief valve pipe 3-3 is gradually ejected by air pressure until the air pressure in the air bag 2 is above the pressure relief threshold value, the air release hole 3-3-1b of the pressure release pipe 3-3-1 is ejected out of the pipe cavity of the pressure release exhaust pipe 3-1, at this time, the pressure release valve 3 is in an open state, and high-pressure gas in the air bag 2 is discharged to the outside through the tube cavity of the pressure release exhaust pipe 3-1, the tube cavity of the pressure release pipe 3-3-1 and the air release hole 3-3-1b of the pressure release pipe 3-3-1 in sequence, so that the air bag 2 is exhausted.
And selecting the rigidity of the spring according to the value requirements of the initial air pressure and the pressure relief threshold of the air bag 2.
The pipe wall of the pressure relief pipe 3-3-1 can be provided with a plurality of air release holes 3-3-1a which are arranged around the axis of the pressure relief pipe 3-3-1 at intervals so as to accelerate the exhaust speed.
Therefore, the utility model discloses a buffer can be applied to the pressure release energy-absorbing of car seat back, also promptly:
the air bag 2 is arranged in the seat back 1, when the automobile runs normally, the air pressure in the air bag 2 is smaller than a pressure relief threshold value, and the pressure relief valve 3 is kept closed, so that the air bag 2 with stable air pressure can provide stable back support for passengers; when the automobile has rear-end collision, the passenger impacts the seat back 1 backwards to compress the air bag 2, the air pressure in the air bag 2 rises along with the air pressure, and the pressure relief valve 3 is opened until the air pressure in the air bag 2 rises above a pressure relief threshold, so that the high-pressure air in the air bag 2 is exhausted through the pressure relief valve 3 under the action of the impact force of the passenger, the impact energy of the passenger on the seat back 1 is absorbed, and the buffer protection of the passenger during the rear-end collision of the automobile is realized; and when the automobile collides at a medium and low speed, the automobile seat framework can be prevented from deforming through the pressure relief, energy absorption and buffering of the air bag 2, and the automobile seat framework is favorable for reducing the maintenance cost of the automobile.
The above is the basic implementation manner of the second embodiment, and further optimization, improvement and limitation can be made on the basis of the basic implementation manner:
preferably: the air pressure of the air bag 2 when not compressed is recorded as initial air pressure, the value of the initial air pressure is between 0.15Mpa and 0.3Mpa, the value of the pressure relief threshold is between 0.25Mpa and 0.35Mpa, the value of the pressure relief threshold is larger than that of the initial air pressure, and the value difference is between 0.05Mpa and 0.1 Mpa.
Through experimental, according to the value mode of above-mentioned initial atmospheric pressure and pressure release threshold value, can satisfy when supporting the passenger's back, ensure the utility model discloses play the effect of buffering protection to the passenger in the collision accident of most car rear-end collisions.
Preferably: the high-pressure gas in the airbag 2 may be air, but it is preferable to use a gas having a higher density than air, such as carbon dioxide, in order to increase the impact energy of the occupant on the seat back 1 when the high-pressure gas is discharged from the airbag 2.
Preferably: the inner wall of the air bag 2 is provided with a plurality of drawstrings at regular intervals so that the air bag 2 can keep the shape of itself under the condition that the air bag is filled with high-pressure gas and the risk of breakage is reduced, and the drawstrings can be arranged in the air bag 2 by sewing, bonding and the like.
The relief valve 3 may be provided at any position on the airbag 2 as long as a sufficient space is secured for the relief valve 3 to vent, but it is generally not recommended that the relief valve 3 face the back foam 1-2 of the seat back 1 so as not to affect the back comfort of the occupant. The shape of the gas bag 2 is not limited, and a square or an oval shape is preferable.
In addition, the air bag 2 may be provided in the seat back 1 in the following structure:
the seat backrest 1 comprises a backrest framework 1-1 and a backrest foaming body 1-2 arranged in front of the backrest framework 1-1, a steel wire mesh 1-3 is hung on the backrest framework 1-1, the air bag 2 is arranged between the backrest foaming body 1-2 and the steel wire mesh 1-3, a plastic partition plate is arranged between the air bag 2 and the steel wire mesh 1-3, so that the air bag 2 is prevented from being partially clamped into the steel wire mesh 1-3, and the risk of damage to the air bag 2 is reduced.
The inflation inlet 2-1 of the air bag 2 is connected with an air pump through an inflation hose. Therefore, after the air bag 2 loses air in a rear-end collision accident or is used for a long time and the air pressure does not reach the standard, the air bag 2 can be inflated again through the air pump, so that the air bag can be used repeatedly, and the maintenance cost of the automobile is reduced; further, by designing the shape of the bag 2, the bag 2 can be used as a pneumatic waist support.
Or, an inflation switch 4 and an inflation pipeline are installed on the seat back 1, and the inflation switch 4 is connected with an inflation port 2-1 of the air bag 2 through the inflation pipeline. Therefore, the inflation switch 4 can be externally connected with an air pump to inflate the air bag 2.
The present invention is not limited to the above-mentioned embodiments, and according to the above-mentioned contents, according to the common technical knowledge and conventional means in the field, without departing from the basic technical idea of the present invention, the present invention can also make other equivalent modifications, replacements or changes in various forms, all falling within the protection scope of the present invention.
Claims (7)
1. The utility model provides a relief valve for car seat back pressure release energy-absorbing which characterized in that includes: the pressure relief device comprises a pressure relief exhaust pipe (3-1), a sealing gasket (3-2), a pressure relief valve pipe (3-3), a spring (3-4) and a cover body (3-5); the air inlet (3-1a) of the pressure relief exhaust pipe (3-1) is communicated with the air bag (2); the pressure relief valve pipe (3-3) is formed by connecting a pressure relief pipe (3-3-1) and a sealing plate (3-3-2), the sealing plate (3-3-2) seals the gas outlet of the pressure relief pipe (3-3-1), the pipe wall of the pressure relief pipe (3-3-1) is provided with a gas leakage hole (3-3-1b), the sealing washer (3-2) is sleeved outside the pressure relief pipe (3-3-1), the pressure relief pipe (3-3-1) is inserted from the gas outlet (3-1b) of the pressure relief exhaust pipe (3-1) and is in sliding fit with the pipe cavity of the pressure relief exhaust pipe (3-1), and the cover body (3-5) is fixedly connected with the pressure relief exhaust pipe (3-1), the spring (3-4) is pressed between the cover body (3-5) and the sealing plate (3-3-2) so that: under the action of the spring force of the spring (3-4), the sealing plate (3-3-2) presses the sealing washer (3-2) onto the air outlet (3-1b) of the pressure relief exhaust pipe (3-1).
2. The pressure relief valve for pressure relief and energy absorption of the automobile seat backrest according to claim 1, characterized in that: the outer wall of the pressure relief exhaust pipe (3-1) at the air inlet (3-1a) is provided with a connecting sheet (3-1-1), and the connecting sheet (3-1-1) is positioned in the air bag (2) and is fixedly bonded with the inner wall of the air bag (2).
3. The pressure relief valve for pressure relief and energy absorption of the automobile seat backrest according to claim 1 or 2, characterized in that: the cover body (3-5) is formed by connecting a cover plate (3-5-1) and a plurality of clamping pieces (3-5-2) which are arranged at intervals, a boss (3-1-2) is arranged on the outer wall of the pressure relief exhaust pipe (3-1), each clamping piece (3-5-2) of the cover body (3-5) is respectively connected with the boss (3-1-2) of the pressure relief exhaust pipe (3-1) in a clamping mode, the sealing washer (3-2), the pressure relief valve pipe (3-3) and the spring (3-4) are located in an inner cavity of the cover body (3-5), and the spring (3-4) abuts against the space between the cover plate (3-5-1) and the sealing plate (3-3-2).
4. A cushioning device for pressure relief and energy absorption of a seat back of an automobile comprises: an air bag (2) and a pressure relief valve (3) mounted on the air bag (2); characterized in that the pressure relief valve (3) is the pressure relief valve for automobile seat backrest pressure relief energy absorption of any one of claims 1 to 3, so that: the pressure relief valve (3) is closed when the air pressure in the air bag (2) is smaller than a preset pressure relief threshold value, and is opened when the air pressure in the air bag (2) is higher than the pressure relief threshold value.
5. The cushioning device for pressure relief and energy absorption of the automobile seat backrest according to claim 4, characterized in that: the air pressure of the air bag (2) when not compressed is recorded as initial air pressure, the value of the initial air pressure is between 0.15MPa and 0.3MPa, the value of the pressure relief threshold value is between 0.25MPa and 0.35MPa, the value of the pressure relief threshold value is larger than that of the initial air pressure, and the value difference is between 0.05MPa and 0.1 MPa.
6. The cushioning device for decompression and energy absorption of the automobile seat backrest according to claim 4 or 5, characterized in that: the high-pressure gas in the air bag (2) adopts gas with density higher than that of air.
7. The cushioning device for decompression and energy absorption of the automobile seat backrest according to claim 4 or 5, characterized in that: the inner wall of the air bag (2) is uniformly provided with a plurality of pull belts at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022654439.XU CN214450482U (en) | 2020-11-16 | 2020-11-16 | Pressure relief valve and buffer device for pressure relief and energy absorption of automobile seat backrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022654439.XU CN214450482U (en) | 2020-11-16 | 2020-11-16 | Pressure relief valve and buffer device for pressure relief and energy absorption of automobile seat backrest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214450482U true CN214450482U (en) | 2021-10-22 |
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ID=78182735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022654439.XU Active CN214450482U (en) | 2020-11-16 | 2020-11-16 | Pressure relief valve and buffer device for pressure relief and energy absorption of automobile seat backrest |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214450482U (en) |
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2020
- 2020-11-16 CN CN202022654439.XU patent/CN214450482U/en active Active
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