CN215805939U - Contactless seat shock absorption pneumatic control valve based on air pressure balance principle - Google Patents
Contactless seat shock absorption pneumatic control valve based on air pressure balance principle Download PDFInfo
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- CN215805939U CN215805939U CN202122354490.3U CN202122354490U CN215805939U CN 215805939 U CN215805939 U CN 215805939U CN 202122354490 U CN202122354490 U CN 202122354490U CN 215805939 U CN215805939 U CN 215805939U
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Abstract
The utility model relates to the technical field of automobile accessories, and provides a non-contact type seat damping pneumatic control valve based on an air pressure balance principle, which comprises a valve body, a first cavity, a second cavity and a first channel, wherein the first cavity is provided with an air inlet, a first valve core is arranged in the second cavity in a sliding mode to divide the second cavity into a third cavity and a fourth cavity, the second channel is arranged and communicated with the third cavity and the fourth cavity, the first channel is communicated with the first cavity and the third cavity, the fourth cavity is provided with an air outlet, the third cavity is provided with an air bag opening, the second valve core is arranged in the valve body in a sliding mode, one end of the second valve core is provided with a first blocking part, and the first blocking part is arranged in the third cavity. Through above-mentioned technical scheme, the automobile seat for the shock attenuation gasbag fill gassing control among the prior art, its problem of damaging easily has been solved.
Description
Technical Field
The utility model relates to the technical field of automobile accessories, in particular to a non-contact type seat damping pneumatic control valve based on the air pressure balance principle.
Background
Generally, the air bag device for damping the automobile seat has various structures, one mode is the air bag for damping the automobile seat, in the prior art, the whole air bag device for damping the automobile seat adopts the matching of a contact and an actuating mechanism to realize the air bag inflation and deflation control, so that the aim of damping is achieved, the structure is complex, the contact is easy to damage, once the contact is damaged, the whole control system is failed, and the damping cannot be realized.
SUMMERY OF THE UTILITY MODEL
The utility model provides a contactless seat damping pneumatic control valve based on the air pressure balance principle, which solves the problem that an air bag for automobile seat damping in the related technology is easy to damage due to inflation and deflation control.
The technical scheme of the utility model is as follows:
a non-contact type seat damping pneumatic control valve based on the air pressure balance principle comprises
A valve body having a first cavity, a second cavity, and a first passage, the first cavity having an inlet port,
the first valve core is arranged in the second cavity in a sliding mode and divides the second cavity into a third cavity and a fourth cavity, the first valve core is provided with a second channel, the second channel is communicated with the third cavity and the fourth cavity, the first channel is communicated with the first cavity and the third cavity, the fourth cavity is provided with an exhaust port, and the third cavity is provided with an air bag port,
the second valve core is arranged in the valve body in a sliding mode, one end of the second valve core is provided with a first blocking part, the first blocking part is arranged in the third cavity and is close to one end opening of the second channel and one end opening of the first channel, after the second valve core slides, the first blocking part blocks one end of the second channel or one end of the first channel,
and the elastic piece is arranged in the valve body and provides a force required by the first blocking part for blocking one end of the second channel.
As a further technical scheme, the valve body comprises
A first valve body, a second valve body,
and the second valve body is arranged in the first valve body and is provided with the first cavity, the third cavity and the fourth cavity.
As a further technical scheme, the second valve core is arranged in the first channel in a sliding mode, a second blocking portion is further arranged at the other end of the second valve core, the second blocking portion is arranged in the first cavity, and after the second valve core slides, the second blocking portion blocks or cancels the blocking of the other end of the first channel.
As a further technical solution, the first valve body has an annular cavity, the annular cavity is located between the first valve body and the second valve body, the annular cavity communicates the air bag port and the third cavity,
also comprises
And the two sealing rings are positioned between the first valve body and the second valve body and are respectively arranged at two sides of the annular cavity.
As a further technical solution, the first valve body further has an exhaust passage, and the exhaust passage communicates with the exhaust port.
As a further technical proposal, the method also comprises
And one end of the elastic adjusting piece extends out of the second valve body, and the other end of the elastic adjusting piece is abutted to the elastic piece.
As a further technical solution, the sliding direction of the first valve core is parallel to the sliding direction of the second valve core.
As a further technical solution, the cross sections of the first valve core and the second valve core are circular, the diameters of the first channel and the second channel are both smaller than the diameter of the first blocking part, and the diameter of the second blocking part is larger than the diameter of the first channel.
As a further technical solution, the elastic adjustment member, the elastic member, the second valve body, the first valve spool and the second valve spool are coaxial.
As a further technical solution, the elastic adjusting member, the elastic member, the first valve element and the second valve element are arranged in the second valve body in sequence from one end to the other end.
The working principle and the beneficial effects of the utility model are as follows:
in order to solve the problem that an airbag for automobile seat shock absorption in the related art is easy to damage due to inflation and deflation control, the utility model particularly designs a contactless seat shock absorption pneumatic control valve based on the air pressure balance principle, wherein a valve body is provided with a first cavity, a second cavity and a first channel, the first cavity is provided with an air inlet, the air inlet is connected with an air pump, and the air pump can provide pressure with certain air pressure for the first cavity; the first valve core is arranged in the second cavity in a sliding mode and divides the second cavity into a third cavity and a fourth cavity, wherein the first channel is communicated with the first cavity and the third cavity, the first valve core is provided with a second channel, and the second channel is communicated with the third cavity and the fourth cavity; the fourth cavity is provided with an exhaust port, the third cavity is provided with an air bag port, the air bag port is connected with an air bag under the automobile seat, so that the air pressure in the air bag can be communicated with the third cavity, the air pressure of the air pump and the air pressure in the air bag can be connected through the first cavity, the third cavity and the first channel, the air pressure of the air bag can be controlled within a proper range by conveniently controlling the opening and closing of the first channel and the second channel, and when people with different weights use the air bag device for automobile seat shock absorption, different weights can bring different pressures to the air bag, so that the air pressure can be adjusted by the valve, the aim of balancing the air pressure of the air bag and the air pump is fulfilled, and the air bag under the automobile seat can have proper air pressure to provide shock absorption effects for people with different weights in the driving process;
the second valve core is arranged in the valve body in a sliding mode, one end of the second valve core is provided with a first blocking part, the first blocking part is arranged in the third cavity, and after the second valve core slides, the first blocking part can block one end of the second channel and open the first channel or block one end of the first channel and open the second channel; specifically, when the pressure of the air pump is greater than that of the air bag, the pressure of the air pump pushes the first blocking part to open the second channel to move, so that the first blocking part blocks one end of the second channel and simultaneously opens the first channel, the air pressure of the air pump flows into the air bag through the first channel, the third cavity and the air bag opening, the air bag is inflated, and the phenomenon that the damping effect is reduced due to the fact that the air pressure of the air bag is too low is prevented; when the pressure of the air pump is smaller than that of the air bag, the pressure of the air bag can push the first valve core to be far away from the second valve core, the first blocking part and the second valve core can be separated, the second channel is opened, the air pressure of the air bag can be discharged through the second channel, the fourth cavity and the exhaust port at the moment, the air discharge of the air bag is realized, the air pressure of the air bag is reduced, and the air pressure of the air bag tends to be balanced with the air pressure of the air pump.
The gasbag for the car seat shock attenuation among the prior art adopts contact and actuating mechanism's cooperation to realize the inflation and deflation control of gasbag mostly, and this embodiment adopts completely different form, through the fine inflation and deflation control of having realized the gasbag of mechanical structure's valve case, life has obtained fine improvement, uses for a long time also can not harm, has improved the convenience of use, and the shock attenuation effect is also more balanced.
The elastic piece is arranged in the valve body and provides force required by the first blocking part for blocking one end of the second channel, so that the elastic piece plays a role of resetting, and the first blocking part is enabled to continuously block the second channel; specifically, when the pressure of the air bag is greater than the pressure of the air pump, the pressure of the air bag can push the first valve core to be away from the second valve core, the second channel is opened, so that the air pressure of the air bag flows into the second channel and is then discharged through the air outlet; when gasbag pressure is less than air pump pressure, the gasbag need not to exhaust, and the gasbag need be aerifyd, and the power that the elastic component provided makes first stifled portion continuously plug up the second passageway, closes the second passageway to prevent that the air pump from being aerifing to the gasbag, the atmospheric pressure of gasbag can directly lead to atmospheric pressure to run off through second passageway and fourth cavity intercommunication, thereby can't reach the balanced absorbing effect of atmospheric pressure.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a first valve core according to the present invention;
FIG. 3 is a schematic view of a first valve body according to the present invention;
FIG. 4 is a schematic view of a second valve body according to the present invention;
FIG. 5 is a schematic view of the elastic adjustment member according to the present invention;
in the figure: 1. valve body, 101, first cavity, 102, second cavity, 1021, third cavity, 1022, fourth cavity, 1023, exhaust port, 1024, air bag port, 103, first channel, 104, air inlet, 105, first valve body, 106, second valve body, 107, annular cavity, 108, exhaust channel, 2, first valve core, 201, second channel, 3, second valve core, 301, first block part, 302, second block part, 4, elastic component, 5, sealing ring, 6, elastic adjusting component.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.
As shown in fig. 1 to 5, the present embodiment proposes a non-contact type seat shock absorption pneumatic control valve based on the air pressure balance principle, which comprises
A valve body 1 having a first cavity 101, a second cavity 102 and a first passage 103, the first cavity 101 having an inlet 104,
a first valve core 2 slidably disposed in the second cavity 102 to divide the second cavity 102 into a third cavity 1021 and a fourth cavity 1022, the first valve core 2 having a second channel 201, the second channel 201 communicating the third cavity 1021 and the fourth cavity 1022, the first channel 103 communicating the first cavity 101 and the third cavity 1021, the fourth cavity 1022 having an exhaust port 1023, the third cavity 1021 having an air bag port 1024,
a second valve core 3 slidably disposed in the valve body 1, wherein one end of the second valve core is provided with a first blocking portion 301, the first blocking portion 301 is disposed in the third cavity 1021, the first blocking portion 301 is close to one end of the second passage 201 and close to one end of the first passage 103, after the second valve core 3 slides, the first blocking portion 301 blocks one end of the second passage 201 or one end of the first passage 103,
and an elastic member 4 disposed in the valve body 1 to provide a force required for the first blocking portion 301 to block one end of the second passage 201.
In this example, in order to solve the problem that the airbag for damping the shock of the car seat in the related art is easy to damage due to inflation and deflation control, a contactless seat damping pneumatic control valve based on the air pressure balance principle is specially designed, wherein the valve body 1 has a first cavity 101, a second cavity 102 and a first channel 103, the first cavity 101 has an air inlet 104, and the air inlet 104 is connected with an air pump, and the air pump can provide a pressure with a certain air pressure for the first cavity 101; the first valve core 2 is slidably arranged in the second cavity 102 to divide the second cavity 102 into a third cavity 1021 and a fourth cavity 1022, wherein the first channel 103 is communicated with the first cavity 101 and the third cavity 1021, the first valve core 2 is provided with a second channel 201, and the second channel 201 is communicated with the third cavity 1021 and the fourth cavity 1022; the fourth cavity 1022 has an exhaust port 1023, the third cavity 1021 has an air bag port 1024, the air bag port 1024 is connected with an air bag under the automobile seat, so that the air pressure in the air bag can be communicated with the third cavity 1021, and the air pressure of the air pump and the air pressure in the air bag can be connected through the first cavity 101, the third cavity 1021 and the first channel 103, so that the air pressure of the air bag can be controlled within a proper range by controlling the opening and closing of the first channel 103 and the second channel 201 conveniently, and different weights can bring different pressures to the air bag when people with different weights use the air bag device for automobile seat shock absorption, so that the air pressure can be adjusted by the valve, the purpose of air pressure balance between the air bag and the air pump is achieved, and the air bag under the automobile seat can have proper air pressure to provide shock absorption effects for people with different weights in the driving process;
the second valve core 3 is arranged in the valve body 1 in a sliding mode, one end of the second valve core 3 is provided with a first blocking part 301 which is arranged in the third cavity 1021, and after the second valve core 3 slides, the first blocking part 301 can block one end of the second channel 201 and open the first channel 103 or block one end of the first channel 103 and open the second channel 201; specifically, when the pressure of the air pump is greater than the pressure of the air bag, the pressure of the air pump pushes the first blocking portion 301 to open the second channel 201 to move, so that the first blocking portion 301 blocks one end of the second channel 201 and simultaneously opens the first channel 103, the air pressure of the air pump flows into the air bag through the first channel 103, the third cavity 1021 and the air bag opening 1024, the air bag is inflated, and the phenomenon that the air pressure of the air bag is too low to reduce the damping effect is avoided; when the pressure of the air pump is smaller than that of the air bag, the pressure of the air bag pushes the first valve core 2 to be far away from the second valve core 3, the first blocking part 301 and the second valve core 3 are separated, the second channel 201 is opened, the air pressure of the air bag is discharged through the second channel 201, the fourth cavity 1022 and the air outlet 1023, the air discharge of the air bag is achieved, the air pressure of the air bag is reduced, and the air pressure of the air bag tends to be balanced with the air pressure of the air pump.
The gasbag for the car seat shock attenuation among the prior art adopts contact and actuating mechanism's cooperation to realize the inflation and deflation control of gasbag mostly, and this embodiment adopts completely different form, through the fine inflation and deflation control of having realized the gasbag of mechanical structure's valve case, life has obtained fine improvement, uses for a long time also can not harm, has improved the convenience of use, and the shock attenuation effect is also more balanced.
The elastic element 4 is arranged in the valve body 1, provides a force required by the first blocking part 301 for blocking one end of the second channel 201, and plays a role in resetting, so that the first blocking part 301 continuously blocks the second channel 201; specifically, when the pressure of the air bag is greater than the pressure of the air pump, the pressure of the air bag pushes the first valve core 2 to be away from the second valve core 3, the second channel 201 is opened, so that the air pressure of the air bag flows into the second channel 201, and then is discharged through the air outlet 1023; when gasbag pressure is less than air pump pressure, the gasbag need not to exhaust, and the gasbag need inflate, and the power that elastic component 4 provided makes first stifled portion 301 continuously plug up second passageway 201, closes second passageway 201 to prevent that the air pump from being aerifing to the gasbag, the atmospheric pressure of gasbag can directly communicate through second passageway 201 and fourth cavity 1022, lead to atmospheric pressure to run off, thereby can't reach the balanced absorbing effect of atmospheric pressure.
Further, the valve body 1 comprises
The first valve body 105 is provided with a first valve body,
and a second valve body 106 disposed in the first valve body 105 and having the first chamber 101, the third chamber 1021, and the fourth chamber 1022.
In this example, the valve body 1 includes a first valve body 105 and a second valve body 106, the second valve body 106 is disposed in the first valve body 105, and has a first cavity 101, a third cavity 1021, and a fourth cavity 1022, so as to facilitate the production of the whole device, prevent the overall production cost from being too high, and the two-layer structure also facilitates the control of the overall air tightness, prevent air leakage, and thus increase the service life.
Further, the second valve spool 3 is slidably disposed in the first passage 103, and a second blocking portion 302 is further disposed at the other end, the second blocking portion 302 is disposed in the first cavity 101, and after the second valve spool 3 slides, the second blocking portion 302 blocks or unblocks the other end of the first passage 103.
In this example, when the pressure in the first cavity 101 is greater than the pressure in the third cavity 1021, the air pressure in the first cavity 101 acts on the first blocking portion 301 to open the first passage 103, so as to inflate the third cavity 1021, thereby achieving pressurization of the air bag, and in order to avoid unrestrained inflation of the third cavity 1021 and avoid unlimited pressurization of the air bag pressure, the second blocking portion 302 is specially designed, and when the air pressure in the first cavity 101 is greater than the air pressure in the third cavity 1021, the air pressure in the first cavity 101 acts on the first blocking portion 301 through the first passage 103 to drive the second valve element 3 to move away from the first cavity 101 until the second blocking portion 103 moves the first passage 103, so that even if the pressure of the air pump is too large or unstable, the air bag is not blocked by too large stamping.
Further, the first valve body 105 has an annular cavity 107, the annular cavity 107 is located between the first valve body 105 and the second valve body 106, the annular cavity 107 communicates the air bag opening 1024 and the third cavity 1021,
also comprises
Two sealing rings 5 are disposed between the first valve body 105 and the second valve body 106 and respectively disposed at two sides of the annular cavity 107.
In this example, the first valve body 105 has an annular cavity 107 located between the first valve body 105 and the second valve body 106, and the annular cavity 107 communicates with the airbag port 1024 and the third cavity 1021, so that the gas flowing in the third cavity 1021 can first pass through the annular cavity 107 and then enter or leave the airbag, and the gas transmission effect of the whole device is more efficient; two sealing rings 5 are added, both located between the first valve body 105 and the second valve body 106, and respectively arranged on both sides of the annular chamber 107, in order to make the whole device more gas-tight.
Further, the first valve body 105 further has an exhaust passage 108, and the exhaust passage 108 communicates with the exhaust port 1023.
In this example, first valve body 105 also has exhaust passage 108, and exhaust passage 108 communicates exhaust port 1023, can make the gas of going out through exhaust port 1023 discharge through exhaust passage 108, make full use of first valve body 105's space for exhaust efficiency improves.
Further, also comprises
And an elastic adjusting member 6 having one end extending out of the second valve body 106 and the other end abutting against the elastic member 4.
In this embodiment, the reason why the elastic adjusting member 6 has one end extending out of the second valve body 106 and the other end abutting against the elastic member 4 is to adjust the tightness of the elastic member 4 by screwing the elastic adjusting member 6, thereby controlling the force of the first blocking part 301 blocking the second channel 201, facilitating the different inflation and deflation amounts of the air bag when people with different weights apply pressure to the air bag, because of the difference in pressure, the amount of force required for the first blocking portion 301 to block the second passage 201 varies, the amount of air pressure required to be adjusted by a light person is small, therefore, the elastic member 4 is loosened by screwing the elastic adjusting member 6, so that the force of the first blocking part 301 blocking the second channel 201 becomes small, and the amount of the air pressure required to be adjusted by a heavy person is large, a tightening degree of the elastic member 4 is obtained by screwing the elastic adjustment member 6, so that the force of the first blocking portion 301 blocking the second passage 201 becomes large.
Further, the sliding direction of the first spool 2 is parallel to the sliding direction of the second spool 3.
In this embodiment, the sliding direction of the first valve core 2 is parallel to the sliding direction of the second valve core 3, so that the sliding of the first valve core and the second valve core is convenient to control and adjust the air pressure of the air bag, and the using space of the device is saved.
Further, the cross sections of the first valve spool 2 and the second valve spool 3 are circular, the diameters of the first channel 103 and the second channel 201 are both smaller than the diameter of the first blocking portion 301, and the diameter of the second blocking portion 302 is larger than the diameter of the first channel 103.
In this example, the cross sections of the first valve element 2 and the second valve element 3 are circular, which facilitates sliding of the valve elements, the diameters of the first channel 103 and the second channel 201 are both smaller than the diameter of the first blocking portion 301, and the diameter of the second blocking portion 302 is larger than the diameter of the first channel 103, so that the first blocking portion 301 can block the first channel 103 or the second channel 201, and the second blocking portion 302 can block the first channel 103.
Further, the elastic adjustment member 6, the elastic member 4, the second valve body 106, the first valve spool 2, and the second valve spool 3 are coaxial.
In this example, the elastic adjusting part 6, the elastic part 4, the second valve body 106, the first valve core 2 and the second valve core 3 are coaxial, so that the assembly of the whole device is facilitated, the use space is saved, and the use is convenient.
Further, the elastic adjustment member 6, the elastic member 4, the first valve element 2, and the second valve element 3 are disposed in the second valve body 106 in this order from one end to the other end.
In this example, the elastic adjusting member 6, the elastic member 4, the first valve element 2, and the second valve element 3 are provided in the second valve body 106 in this order from one end to the other end, and the positions of the respective workpieces in the second valve body 106 are determined so that they are used in cooperation with each other to control the air pressure of the adjustment air bag.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A contactless seat shock absorption pneumatic control valve based on the air pressure balance principle is characterized by comprising
A valve body (1) having a first cavity (101), a second cavity (102) and a first passage (103), the first cavity (101) having an inlet (104),
a first valve core (2) which is arranged in the second cavity (102) in a sliding mode and divides the second cavity (102) into a third cavity (1021) and a fourth cavity (1022), wherein the first valve core (2) is provided with a second channel (201), the second channel (201) is communicated with the third cavity (1021) and the fourth cavity (1022), the first channel (103) is communicated with the first cavity (101) and the third cavity (1021), the fourth cavity (1022) is provided with an exhaust port (1023), and the third cavity (1021) is provided with an air bag port (1024),
the second valve core (3) is arranged in the valve body (1) in a sliding mode, one end of the second valve core is provided with a first blocking part (301), the first blocking part (301) is arranged in the third cavity (1021), the first blocking part (301) is close to one port of the second channel (201) and one port of the first channel (103), and after the second valve core (3) slides, the first blocking part (301) blocks one end of the second channel (201) or one end of the first channel (103),
and the elastic piece (4) is arranged in the valve body (1) and provides a force required by the first blocking part (301) for blocking one end of the second channel (201).
2. The air pressure balance principle-based contactless seat shock absorption pneumatic control valve according to claim 1, wherein the valve body (1) comprises
A first valve body (105) for closing the valve,
a second valve body (106) disposed within the first valve body (105) having the first cavity (101), the third cavity (1021), and the fourth cavity (1022).
3. The contactless seat shock absorption pneumatic control valve based on the air pressure balance principle according to claim 2, characterized in that the second valve core (3) is slidably disposed in the first passage (103), the other end of the second valve core is further provided with a second blocking portion (302), the second blocking portion (302) is disposed in the first cavity (101), and after the second valve core (3) slides, the second blocking portion (302) blocks or unblocks the other end of the first passage (103).
4. The contactless seat shock absorption pneumatic control valve based on air pressure balance principle according to claim 3, characterized in that the first valve body (105) has an annular cavity (107), the annular cavity (107) is located between the first valve body (105) and the second valve body (106), the annular cavity (107) communicates the air bag port (1024) and the third cavity (1021),
also comprises
And two sealing rings (5) are arranged, are positioned between the first valve body (105) and the second valve body (106), and are respectively arranged at two sides of the annular cavity (107).
5. The contactless seat cushion pneumatic control valve based on the air pressure balance principle according to claim 4, wherein the first valve body (105) further has an exhaust passage (108), and the exhaust passage (108) communicates with the exhaust port (1023).
6. The air pressure balance principle-based non-contact type seat shock absorption pneumatic control valve according to claim 5, further comprising
And one end of the elastic adjusting piece (6) extends out of the second valve body (106), and the other end of the elastic adjusting piece is abutted against the elastic piece (4).
7. The air pressure balance principle-based contactless seat cushion pneumatic control valve according to claim 6, wherein the sliding direction of the first spool (2) is parallel to the sliding direction of the second spool (3).
8. The contactless seat shock absorption pneumatic control valve based on the air pressure balance principle according to claim 7, characterized in that the cross section of the first valve core (2) and the second valve core (3) is circular, the diameter of the first channel (103) and the diameter of the second channel (201) are both smaller than the diameter of the first blocking part (301), and the diameter of the second blocking part (302) is larger than the diameter of the first channel (103).
9. The contactless seat cushion pneumatic control valve based on the air pressure balance principle according to claim 8, characterized in that the elastic adjustment member (6), the elastic member (4), the second valve body (106), the first spool (2), and the second spool (3) are coaxial.
10. The contactless seat shock absorption pneumatic control valve based on the air pressure balance principle according to claim 9, characterized in that the elastic adjustment member (6), the elastic member (4), the first spool (2), and the second spool (3) are provided in the second valve body (106) in this order from one end to the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122354490.3U CN215805939U (en) | 2021-09-27 | 2021-09-27 | Contactless seat shock absorption pneumatic control valve based on air pressure balance principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122354490.3U CN215805939U (en) | 2021-09-27 | 2021-09-27 | Contactless seat shock absorption pneumatic control valve based on air pressure balance principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215805939U true CN215805939U (en) | 2022-02-11 |
Family
ID=80167315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122354490.3U Active CN215805939U (en) | 2021-09-27 | 2021-09-27 | Contactless seat shock absorption pneumatic control valve based on air pressure balance principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215805939U (en) |
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2021
- 2021-09-27 CN CN202122354490.3U patent/CN215805939U/en active Active
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