Height control valve for low suspension travel seat and low suspension travel seat

Abstract

The present invention discloses a height control valve for a low suspension travel seat and a low suspension travel seat. The height control valve for a low suspension travel seat comprises a valve body and a valve stem, wherein a valve chamber is arranged in the valve body, and the valve stem can slide axially back and forth in the valve chamber; the valve chamber is provided with a first airflow chamber and a second airflow chamber, the first airflow chamber is connected to an air source, and the second airflow chamber is connected to an airbag; the outer wall of the valve stem is provided with at least one first groove; the valve stem slides different distances in the valve chamber, and the first groove connects the first airflow chamber and the second airflow chamber, or the first groove connects the second airflow chamber and the outside. The height control valve for a low suspension travel seat has a simple structure, convenient installation, and low cost.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to a height control valve for a low suspension travel seat and a low suspension travel seat. Background Art

[0002] The heavy truck seat is equipped with an airbag shock absorbing mechanism, which includes an airbag and a height control valve for controlling the inflation or exhaust of the airbag. The airbag shock absorbing mechanism can realize the height adjustment and suspension adjustment of the heavy truck seat, and has good comfort.

[0003] Light truck seats, light passenger and cargo vehicle seats (such as pickup truck seats), and passenger car seats do not have airbag shock absorption mechanisms, cannot achieve height adjustment and suspension adjustment, and have poor comfort.

[0004] Due to the different spatial designs of heavy truck seats, light truck seats, light passenger and cargo vehicle seats, and passenger car seats, in order to achieve the best comfort for the driver, and considering the possible adjustment states of the seat such as horizontal adjustment, vertical adjustment, and tilt adjustment, the seat design reference point (R point) of heavy truck seats is relatively high, while the R point of light trucks, light passenger and cargo vehicles, and passenger cars is relatively low. It should be noted here that according to the height of the R point, heavy truck seats and other seats with a high R point belong to high suspension travel seats, and light truck seats, light passenger and cargo vehicle seats, and passenger car seats and other seats with a low R point belong to low suspension travel seats. The height adjustment range and suspension height adjustment range of the height adjustment valve for high suspension travel seats cannot meet the height adjustment and suspension requirements of low suspension travel seats. In other words, the height adjustment valve for high suspension travel seats cannot be directly applied to low suspension travel seats. In order to improve the comfort of low suspension travel seats, it is necessary to design a height control valve for the airbag shock absorbing mechanism of low suspension travel seats. Summary of the invention

[0005] In view of the above problems, the present invention is proposed to provide a height control valve for a low suspension stroke seat and a low suspension stroke seat that overcomes the above problems or at least partially solves the above problems.

[0006] According to one aspect of the present invention, a height control valve for a low suspension stroke seat is provided, the height control valve for a low suspension stroke seat comprising a valve body and a valve stem, the valve body being provided with a valve chamber, the valve stem being axially reciprocatingly slidable in the valve chamber; the valve chamber being provided with a first airflow chamber and a second airflow chamber, the first airflow chamber being connected to an air source, and the second airflow chamber being connected to an airbag; the outer wall of the valve stem being provided with at least one first groove; the valve stem sliding different distances in the valve chamber, the first groove connecting the first airflow chamber and the second airflow chamber, or the first groove connecting the second airflow chamber and the outside world.

[0007] Preferably, two sealing rings are provided on the inner wall of the valve chamber, separating a first airflow chamber and a second airflow chamber in the valve chamber; the valve stem slides different distances in the valve chamber, and the first groove spans the first sealing ring to connect the first airflow chamber and the second airflow chamber; the first groove spans the second sealing ring to connect the second airflow chamber and the outside world.

[0008] Preferably, second grooves are respectively provided at two axial ends of the first groove, the first groove is communicated with the second groove, and the width of the second groove is smaller than that of the first groove.

[0009] Preferably, the first groove includes a rectangular groove and a V-shaped groove which are connected to each other, and the V-shaped groove is arranged at two ends of the rectangular groove.

[0010] Preferably, the low suspension travel seat includes a shock absorber upper end cover, a shock absorber base plate, and at least two scissor frame structures are arranged between the shock absorber upper end cover and the shock absorber base plate, the scissor frame structure includes an inner scissor frame and an outer scissor frame, the inner scissor frame and the outer scissor frame are connected by a pin shaft, and the height control valve for the low suspension travel seat is arranged between the shock absorber upper end cover and the shock absorber base plate.

[0011] Preferably, a first rotating connecting member is provided on the valve stem, and the valve stem is rotatably connected to the shock absorber upper end cover, the pin shaft, the inner scissors frame or the outer scissors frame through the first rotating connecting member; a second rotating connecting member is provided on the valve body, and the valve body is rotatably connected to the shock absorber base plate through the second rotating connecting member.

[0012] Preferably, a first fixing device for rotationally connecting to the first rotating connector is provided on the shock-absorbing upper end cover, the inner scissor frame or the outer scissor frame; and a second fixing device for rotationally connecting to the second rotating connector is provided on the shock absorber bottom plate.

[0013] Preferably, two mounting grooves for fixing the sealing ring are arranged on the inner wall of the valve chamber, and the thickness of the mounting grooves is smaller than the thickness of the sealing ring.

[0014] Preferably, an end cover is provided at the end of the valve chamber, and a through hole is provided on the end cover, and the valve stem can axially reciprocate and slide in the valve chamber through the through hole.

[0015] Preferably, a step is provided in the valve chamber, and the first sealing ring is provided on the step; the second sealing ring is provided on the end cover; a support member is provided between the first sealing ring and the second sealing ring, and the thickness of the support member is smaller than the thickness of the sealing ring.

[0016] According to another aspect of the present invention, a low suspension travel seat is provided, which includes a shock absorber upper end cover and a shock absorber base plate, an airbag and a height control valve for the low suspension travel seat as described above are arranged between the shock absorber upper end cover and the shock absorber base plate, and the low suspension travel seat height control valve is used to collect height information between the shock absorber upper end cover and the shock absorber base plate, and control the inflation or deflation of the airbag according to the height information.

[0017] The beneficial effects of the present invention are as follows: the height control valve for a low suspension travel seat is a linear structure, adapted to the structure of the scissor frame, and thus matched with the movement of the scissor frame, and can follow the scissor frame to move to a lower position, not only to collect the height change of the low suspension travel seat, but also to adjust its own working stroke according to the height change, control the inflation or deflation of the airbag, thereby achieving height adjustment or suspension adjustment in the ultra-low stroke of the low suspension travel seat, or achieving height adjustment and suspension adjustment at the same time, and improving the comfort of the low suspension travel seat. In addition, the height control valve for the low suspension travel seat has a simple structure, convenient installation, stable operation, and low cost.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0020] Figure 1 A perspective view of a low suspension travel seat according to one embodiment of the present invention is shown;

[0021] Figure 2A perspective view of a height control valve for a low suspension travel seat according to one embodiment of the present invention is shown;

[0022] Figure 3 An exploded view of a height control valve for a low suspension travel seat according to one embodiment of the present invention is shown;

[0023] Figure 4 A cross-sectional view of a height control valve for a low suspension travel seat according to one embodiment of the present invention is shown;

[0024] Figure 5 A perspective view of a valve stem according to an embodiment of the present invention is shown;

[0025] Description of reference numerals:

[0026] 1. Upper cover of shock absorber;

[0027] 2. Shock absorber base plate;

[0028] 3. Scissor frame mechanism;

[0029] 310, internal scissor frame;

[0030] 320, external scissor rack;

[0031] 330, pin;

[0032] 4. Height control valve for low suspension travel seats;

[0033] 410, valve body;

[0034] 411, valve chamber;

[0035] 411-1, first airflow chamber;

[0036] 411-2, second airflow chamber;

[0037] 411-3, gas source connection port;

[0038] 411-4, airbag connection port;

[0039] 411-5, first sealing ring;

[0040] 411-6, second sealing ring;

[0041] 411-7, end cap;

[0042] 411-8, stairs;

[0043] 411-9, support member;

[0044] 412, second rotating connection member;

[0045] 420, valve stem;

[0046] 421, first groove;

[0047] 422, second groove;

[0048] 423, first rotating connection member;

[0049] 5. The second fixing device. DETAILED DESCRIPTION

[0050] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Figure 1 A perspective view of a low suspension travel seat according to one embodiment of the present invention is shown. Figure 1 As shown, the low suspension travel seat includes a shock absorber upper end cover 1 and a shock absorber base plate 2, an airbag, a low suspension travel seat height control valve 4 and at least two scissor frame structures 3 are arranged between the shock absorber upper end cover 1 and the shock absorber base plate 2, and the low suspension travel seat height control valve 4 is used to control the inflation or exhaust of the airbag to achieve height adjustment or suspension adjustment of the low suspension travel seat, or to achieve height adjustment and suspension adjustment of the low suspension travel seat at the same time, thereby improving the comfort of the low suspension travel seat.

[0054] Here, the structure of the low suspension stroke seat height control valve 4 will be described. Figure 2 A perspective view of a height control valve for a low suspension travel seat according to one embodiment of the present invention is shown. Figure 3 An exploded view of a height control valve for a low suspension travel seat according to one embodiment of the present invention is shown. Figure 4 FIG. 2 shows a cross-sectional view of a height control valve for a low suspension travel seat according to an embodiment of the present invention, Figure 5 FIG. 4 shows a perspective view of a valve stem according to an embodiment of the present invention. Figure 2-5 As shown, the height control valve 4 for a low suspension travel seat includes a valve body 410 and a valve stem 420. A valve chamber 411 is provided in the valve body 410, and the valve stem 420 can axially reciprocate in the valve chamber 411;

[0055] The valve chamber 411 is provided with a first airflow chamber 411-1 and a second airflow chamber 411-2. The first airflow chamber 411-1 is connected to the air source through an air source connection port 411-3, and the second airflow chamber 411-2 is connected to the airbag through an airbag connection port 411-4.

[0056] The outer wall of the valve stem 420 is provided with at least one first groove 421. The valve stem 420 slides different distances in the valve chamber 411. The first groove 421 connects the first airflow chamber 411-1 and the second airflow chamber 411-2 to control the inflation of the airbag; or, the first groove 421 connects the second airflow chamber 411-2 and the outside to control the deflation of the airbag.

[0057] It can be seen that the height control valve for low suspension travel seats is a linear structure, which is adapted to the structure of the scissor frame, so it matches the movement of the scissor frame and can follow the scissor frame to move to a lower position. It can not only collect the height change of the low suspension travel seat, but also adjust its own working stroke according to this height change, control the inflation or deflation of the airbag, so as to achieve height adjustment or suspension adjustment in the ultra-low stroke of the low suspension travel seat, or achieve height adjustment and suspension adjustment at the same time, and improve the comfort of the low suspension travel seat. In addition, the height control valve for low suspension travel seats has a simple structure, convenient installation, stable operation and low cost.

[0058] Further, as Figure 4As shown, two sealing rings are arranged on the inner wall of the valve chamber 411, and the first airflow chamber 411-1 and the second airflow chamber 411-2 are separated in the valve chamber 411; the valve stem 420 slides different distances in the valve chamber 411, and the first groove 421 crosses the first sealing ring 411-5 to connect the first airflow chamber 411-1 and the second airflow chamber 411-2, so as to control the inflation of the airbag; the first groove 421 crosses the second sealing ring 411-6 to connect the second airflow chamber 411-2 and the outside, so as to control the deflation of the airbag. It should be noted here that separating the first airflow chamber and the second airflow chamber in the valve chamber by setting a sealing ring is only one implementation method, and other methods that can separate the first airflow chamber and the second airflow chamber in the valve chamber are all within the protection scope of this application.

[0059] Further, as Figure 5 As shown, the second grooves 422 are respectively disposed at two axial ends of the first groove 421 , the first groove 421 is communicated with the second groove 422 , and the width of the second groove 422 is smaller than that of the first groove 421 .

[0060] When the height of the low suspension travel seat is at the suspended height, the first groove 421 and the second groove 422 are both located in the first airflow cavity 411 - 1 , and at this time, the airbag is neither inflated nor exhausted.

[0061] When the second groove 422 located at the lower part of the first groove 421 crosses the first sealing ring 411-5, trace gas enters the airbag through the second groove 422, and the height of the low suspension travel seat increases slightly; when the second groove 422 located at the upper part of the first groove 421 crosses the second sealing ring 411-6, trace gas is discharged into the atmosphere through the second groove 422, and the height of the low suspension travel seat decreases slightly.

[0062] When the first groove 421 crosses the first sealing ring 411-5, more gas enters the airbag through the first groove 421, and the height of the low suspension travel seat increases significantly; when the first groove 421 crosses the second sealing ring 411-6, more gas is discharged into the atmosphere through the second groove 422, and the height of the low suspension travel seat decreases significantly.

[0063] It can be seen that by providing the first groove 421 and the second groove 422 , the suspension adjustment amplitude changes gradually, thereby further improving the comfort.

[0064] Furthermore, the first groove 421 includes a rectangular groove and a V-shaped groove that are connected to each other, and the V-shaped grooves are arranged at two axial ends of the rectangular groove. The shape of the first groove 421 in a top view can be set to be rectangular in the middle and triangular at both ends.

[0065] When the height of the low suspension travel seat is at the suspended height, the entire structure of the first groove 421 is located in the first airflow chamber 411 - 1 , and at this time, the airbag is neither inflated nor exhausted.

[0066] When the V-shaped groove at the lower part of the second groove 422 crosses the first sealing ring 411-5, trace gas enters the airbag through the second groove 422, and the height of the low suspension travel seat increases slightly; when the V-shaped groove at the upper part of the second groove 422 crosses the second sealing ring 411-6, trace gas is discharged into the atmosphere through the second groove 422, and the height of the low suspension travel seat decreases slightly.

[0067] When the rectangular groove of the first groove 421 crosses the first sealing ring 411-5, more gas enters the airbag through the first groove 421, and the height of the low suspension travel seat increases significantly; when the rectangular groove of the first groove 421 crosses the second sealing ring 411-6, more gas is discharged into the atmosphere through the second groove 422, and the height of the low suspension travel seat decreases significantly.

[0068] It can be seen that by setting the shape of the first groove 421, the suspension adjustment amplitude changes gradually, further improving the comfort.

[0069] Of course, in order to prevent the low suspension travel seat from bottoming out, the number of first grooves 421 can be increased, and the depth of the first grooves 421 can also be changed. The present application does not further limit the number and depth of the first grooves 421. At the same time, in order to meet the suspension adjustment requirements of seats with different low suspension travels, the number of second grooves 422 can be increased, and the depth of the second grooves 422 can also be changed. The present application does not further limit the number and depth of the second grooves 422.

[0070] In summary, the present application can not only adjust the suspension height range of the low suspension travel seat by changing the position, number and depth of the first groove and the second groove, but also adjust the suspension height range of the low suspension travel seat by setting the shape and depth of the first groove.

[0071] Still Figure 1 As shown, the low suspension travel seat includes a shock absorber upper end cover 1, a shock absorber base plate 2, and at least two scissor frame structures 3 are arranged between the shock absorber upper end cover 1 and the shock absorber base plate 2, the scissor frame structure 3 includes an inner scissor frame 310 and an outer scissor frame 320, the inner scissor frame 310 and the outer scissor frame 320 are connected by a pin shaft 330, and a height control valve 4 for the low suspension travel seat is arranged between the shock absorber upper end cover 1 and the shock absorber base plate 2. The height control valve 4 for the low suspension travel seat can not only collect the height change between the shock absorber upper end cover 1 and the shock absorber base plate 2, but also adjust its own working stroke according to the height change, thereby controlling the inflation or deflation of the airbag.

[0072] It can be seen from this that since the height control valve for the low suspension stroke seat is a linear structure, as long as the height control valve 4 for the low suspension stroke seat is set between the shock absorber upper end cover 1 and the shock absorber base plate 2, the height change between the shock absorber upper end cover 1 and the shock absorber base plate 2 can be collected, and its own working stroke can be adjusted according to this height change to control the inflation or deflation of the airbag, thereby realizing the height adjustment or suspension adjustment of the low suspension stroke seat, or realizing height adjustment and suspension adjustment at the same time. It can be seen that the installation position of the low suspension stroke seat height control valve is not restricted, and it is more applicable.

[0073] The installation methods of height control valve for low suspension travel seats mainly include the following:

[0074] The first one is that a first rotating connector 423 is provided on the valve stem 420, and the valve stem 420 is rotatably connected to the shock absorber upper end cover 1 through the first rotating connector 423; a second rotating connector 412 is provided on the valve body 410, and the valve body 410 is rotatably connected to the shock absorber base plate 2 through the second rotating connector 412.

[0075] The second type is that a first rotating connector 423 is provided on the valve stem 420, and the valve stem 420 is rotatably connected to the pin shaft 330 through the first rotating connector 423; a second rotating connector 412 is provided on the valve body 410, and the valve body 410 is rotatably connected to the shock absorber base plate 2 through the second rotating connector 412.

[0076] The third type is that a first rotating connector 423 is provided on the valve stem 420, and the valve stem 420 is rotatably connected to the inner scissor frame 310 or the outer scissor frame 320 through the first rotating connector 423; a second rotating connector 412 is provided on the valve body 410, and the valve body 410 is rotatably connected to the shock absorber base plate 2 through the second rotating connector 412.

[0077] Further, in order to realize the rotatable connection between the valve stem 420 and the shock absorber upper end cover 1, the inner scissor frame 310 or the outer scissor frame 320, a first fixing device (not shown in the figure) for rotatably connecting with the first rotating connection member 423 can be provided on the shock absorber upper end cover 1, the inner scissor frame 310 or the outer scissor frame 320. For example, the first fixing device is a cylindrical protrusion, and the first rotating connection member 423 is rotatably connected with the cylindrical protrusion; in addition, in order to realize the rotatable connection between the valve body 410 and the shock absorber bottom plate 2, a second fixing device 5 for rotatably connecting with the second rotating connection member 412 is provided on the shock absorber bottom plate 2. For example, the second fixing device 5 includes an L-shaped base, and a cylindrical protrusion is provided on the L-shaped base, and the second rotating connection member 412 is rotatably connected with the cylindrical protrusion.

[0078] Further, as Figure 3or Figure 4 As shown, an end cap 411-7 is provided at the end of the valve chamber 411, and a through hole is provided on the end cap 411-7, through which the valve stem 420 can slide axially back and forth in the valve chamber 411. The end cap guides the valve stem to ensure the normal operation of the valve stem.

[0079] Furthermore, in order to better set the sealing ring on the inner wall of the valve chamber 411, two installation grooves for fixing the sealing ring are provided on the inner wall of the valve chamber 411. The thickness of the installation groove is smaller than the thickness of the sealing ring to ensure smooth sliding of the valve stem in the valve chamber.

[0080] Further, as Figure 4 As shown, the sealing ring is set on the inner wall of the valve chamber 411. In addition to setting the installation groove of the sealing ring on the inner wall of the valve chamber 411, it can also be set in the following way: a step 411-8 is set in the valve chamber, and the first sealing ring 411-5 is set on the step 411-8; the second sealing ring 411-6 is set on the end cover 411-7; a support member 411-9 is set between the first sealing ring 411-5 and the second sealing ring 411-6, and the thickness of the support member 411-9 is less than the thickness of the two sealing rings to ensure the smooth sliding of the valve stem in the valve chamber. It should be noted that in actual applications, the setting method of the sealing ring can be selected according to needs, and this application does not further limit the setting method of the sealing ring.

[0081] In summary, the height control valve for low suspension travel seat is a linear structure, which is adapted to the structure of the scissor frame, so it matches the movement of the scissor frame and can follow the scissor frame to move to a lower position. It can not only collect the height change of the low suspension travel seat, but also adjust its own working stroke according to the height change, control the inflation or deflation of the airbag, so as to achieve height adjustment and / or suspension adjustment in the ultra-low travel of the low suspension travel seat, and improve the comfort of the low suspension travel seat. In addition, the height control valve for low suspension travel seat has a simple structure, convenient installation, stable operation and low cost.

[0082] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the scope of protection of the present invention.

Claims

1. A height control valve for a low suspension travel seat, characterized in that: The height control valve for a low suspension travel seat comprises a valve body and a valve stem, wherein a valve chamber is arranged in the valve body, and the valve stem can axially reciprocate in the valve chamber; The valve chamber is provided with a first airflow chamber and a second airflow chamber, the first airflow chamber is connected to the air source, and the second airflow chamber is connected to the airbag; The outer wall of the valve stem is provided with at least one first groove; The valve stem slides different distances in the valve chamber, and the first groove connects the first airflow cavity and the second airflow cavity, or the first groove connects the second airflow cavity and the outside; Two sealing rings are arranged on the inner wall of the valve chamber, and a first airflow cavity and a second airflow cavity are separated in the valve chamber; The valve stem slides different distances in the valve chamber, the first groove spans the first sealing ring to connect the first airflow chamber and the second airflow chamber; the first groove spans the second sealing ring to connect the second airflow chamber and the outside.

2. The height control valve for a low suspension travel seat according to claim 1, characterized in that: Second grooves are respectively disposed at two axial ends of the first groove, the first groove is communicated with the second groove, and a width of the second groove is smaller than a width of the first groove.

3. The height control valve for a low suspension travel seat according to claim 1, characterized in that: The first groove includes a rectangular groove and a V-shaped groove which are connected to each other, and the V-shaped groove is arranged at two ends of the rectangular groove.

4. The height control valve for a low suspension travel seat according to claim 1, characterized in that: The low suspension travel seat includes a shock absorber upper end cover, a shock absorber base plate, and at least two scissor frame structures are arranged between the shock absorber upper end cover and the shock absorber base plate, the scissor frame structure includes an inner scissor frame and an outer scissor frame, the inner scissor frame and the outer scissor frame are connected by a pin shaft, and the height control valve for the low suspension travel seat is arranged between the shock absorber upper end cover and the shock absorber base plate.

5. The height control valve for a low suspension travel seat according to claim 4, characterized in that: The valve stem is provided with a first rotating connection member, and the valve stem is rotatably connected to the upper end cover of the shock absorber, the pin shaft, the inner scissor frame or the outer scissor frame through the first rotating connection member; The valve body is provided with a second rotating connection member, and the valve body is rotatably connected to the shock absorber bottom plate via the second rotating connection member.

6. The height control valve for a low suspension travel seat according to claim 5, characterized in that: The shock absorber upper end cover, the inner scissor frame or the outer scissor frame is provided with a first fixing device for rotationally connecting with the first rotating connecting member; The shock absorber bottom plate is provided with a second fixing device for rotationally connecting with the second rotating connecting member.

7. The height control valve for a low suspension travel seat according to claim 1, characterized in that: Two mounting grooves for fixing the sealing ring are arranged on the inner wall of the valve chamber, and the thickness of the mounting grooves is smaller than the thickness of the sealing ring.

8. The height control valve for a low suspension travel seat according to claim 1, characterized in that: An end cover is provided at the end of the valve chamber, and a through hole is provided on the end cover. The valve stem can axially reciprocate and slide in the valve chamber through the through hole.

9. The height control valve for a low suspension travel seat according to claim 8, characterized in that: A step is provided in the valve chamber, and the first sealing ring is provided on the step; The second sealing ring is arranged on the end cover; A support member is provided between the first sealing ring and the second sealing ring, and a thickness of the support member is smaller than a thickness of the sealing ring.

10. A low suspension travel seat, characterized in that: The low suspension travel seat includes a shock absorber upper end cover and a shock absorber base plate, an airbag and a height control valve for a low suspension travel seat as described in any one of claims 1 to 9 are arranged between the shock absorber upper end cover and the shock absorber base plate, and the low suspension travel seat height control valve is used to collect height information between the shock absorber upper end cover and the shock absorber base plate, and control the inflation or deflation of the airbag according to the height information.

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