Rapid exhaust device for commercial truck seat and automobile seat

Abstract

The utility model provides a rapid exhaust device for a commercial truck seat and an automobile seat, and relates to the technical field of automobile seats. The rapid exhaust device for the commercial truck seat comprises a labyrinth support body, an air valve sliding support and a button. A valve body assembly is arranged in the maze support body, a guide rail is arranged on the outer wall of the maze support body, and the maze support body is sleeved with the air valve sliding support in a sliding mode. An air valve reset elastic piece is arranged between the labyrinth support body and the air valve sliding support, and the compression direction of the air valve reset elastic piece is consistent with the sliding direction of the air valve sliding support. A labyrinth structure is arranged on the labyrinth support body, a labyrinth locking piece matched with the labyrinth structure is arranged on the air valve sliding support, and the labyrinth locking piece can lock or unlock the valve body assembly in the moving process of the air valve sliding support. The button is installed on the air valve sliding support. The automobile seat comprises the quick exhaust device for the commercial truck seat. The technical effect of convenient use is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle seats, and more particularly to a quick exhaust device for a commercial truck seat and a vehicle seat. Background Art

[0002] With the progress of the commercial vehicle field, commercial truck driver seats have gradually had shock absorption functions, and most of the current shock absorption principles are related to the air source. The devices applied to quick exhaust on the market are mainly divided into the following types: an exhaust structure for a control valve for quickly adjusting the height of a seat, which uses three air ports, and the valve stem reciprocates in the valve body to control air intake and exhaust to achieve the function of quickly exhausting air to lower the seat. Or, a switch is used to adjust the air intake and exhaust ports of the air valve, and the valve stem and air plug are controlled. When the switch is opened, the inflation air plug blocks the inflation joint, and the exhaust joint quickly discharges air to achieve the same function of quickly exhausting air. Or, a quick exhaust structure used on a truck seat that also uses a switch to control air intake and exhaust. When the switch is opened, the valve stem is affected by the movement of the opened switch and moves along the valve body away from the switch, and the air plug is pushed open by the valve stem to achieve the function of quickly exhausting air.

[0003] However, in the prior art, continuous manual force is required until the gas is exhausted during the process of unlocking and exhausting, which is laborious and inconvenient for the operation of the occupant. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a quick exhaust device for a commercial truck seat and a vehicle seat to alleviate the technical problem of inconvenient use in the prior art.

[0005] In a first aspect, an embodiment of the utility model provides a quick exhaust device for a commercial truck seat, including a labyrinth bracket body, a valve sliding bracket, and a button;

[0006] A valve body assembly is arranged inside the labyrinth bracket body, a guide rail is arranged on the outer wall of the labyrinth bracket body, the valve sliding bracket is slidably sleeved on the labyrinth bracket body, and a guide groove adapted to the guide rail is arranged inside the valve sliding bracket;

[0007] An air valve return elastic member is arranged between the labyrinth bracket body and the valve sliding bracket, and the compression direction of the air valve return elastic member is consistent with the sliding direction of the valve sliding bracket;

[0008] The labyrinth bracket body has a labyrinth structure, and a labyrinth locking member adapted to the labyrinth structure is arranged on the valve sliding bracket, and the labyrinth locking member can lock or unlock the valve body assembly during the movement of the valve sliding bracket;

[0009] The button is installed on the valve sliding bracket.

[0010] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation manner of the first aspect. Among them, the valve body assembly includes a valve body box, an air valve air plug, an air plug return spring, a valve needle, and an end cover;

[0011] A control channel is provided in the valve body box along its length direction. An air inlet channel and an exhaust channel are provided in the valve body box. Both the air inlet channel and the exhaust channel are connected to the control channel. A sealing seat is provided in the control channel at the position of the exhaust channel;

[0012] End covers are provided at both ends of the valve body box. The air valve air plug is inserted into the control channel from the left side of the valve body box. The air plug return spring is located between the end cover and the air valve air plug. The valve needle is inserted into the control channel from the right side of the valve body box. The valve needle can abut against the air valve air plug;

[0013] The air valve sliding bracket has a tail piece that can drive the valve needle.

[0014] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation manner of the first aspect. Among them, a convex ring is provided on the outer wall of the valve needle. Sealing rings are sleeved on both sides of the convex ring on the valve needle. The sealing rings on the valve needle can slide-seal with the inner wall of the control channel.

[0015] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation manner of the first aspect. Among them, a valve needle return spring is sleeved on the valve needle. One end of the valve needle return spring abuts against the sealing seat, and the other end abuts against the convex ring.

[0016] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation manner of the first aspect. Among them, a connection seat for connecting to a seat is provided on the valve body box.

[0017] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation manner of the first aspect. Among them, the labyrinth locking member includes a stop point sliding seat, a labyrinth stop point slider, and the tail piece;

[0018] The stop point sliding seat is fixed on the labyrinth bracket body. The tail piece is located at the bottom of the stop point sliding seat;

[0019] The labyrinth stop point slider is slidably installed on the stop point sliding seat. The protrusion at the bottom of the labyrinth stop point slider can fall into the labyrinth structure.

[0020] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation manner of the first aspect. Among them, the above-mentioned labyrinth structure includes a left slideway, a right slideway, a locking island and a guiding island;

[0021] The guiding island and the locking island are located between the left slideway and the right slideway. The guiding island is located at one end of the left slideway and the right slideway, and the other ends of the left slideway and the right slideway are connected to each other;

[0022] The protrusion is triangular.

[0023] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation manner of the first aspect. Among them, the connected end of the left slideway and the right slideway is closer to the button.

[0024] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation manner of the first aspect. Among them, the air valve return elastic member adopts a return spring.

[0025] In a second aspect, an embodiment of the present utility model provides an automotive seat, including a mounting base, an outer guard plate and the commercial vehicle seat quick exhaust device;

[0026] The labyrinth bracket body of the commercial vehicle seat quick exhaust device is installed on the mounting base, and the mounting base is installed on the outer guard plate.

[0027] Beneficial effects:

[0028] The present utility model provides a commercial vehicle seat quick exhaust device, including a labyrinth bracket body, an air valve sliding bracket and a button; a valve body assembly is arranged inside the labyrinth bracket body, a guide rail is arranged on the outer wall of the labyrinth bracket body, the air valve sliding bracket is slidably sleeved on the labyrinth bracket body, and a guide groove adapted to the guide rail is arranged inside the air valve sliding bracket; an air valve return elastic member is arranged between the labyrinth bracket body and the air valve sliding bracket, and the compression direction of the air valve return elastic member is consistent with the sliding direction of the air valve sliding bracket; the labyrinth bracket body has a labyrinth structure, and a labyrinth locking member adapted to the labyrinth structure is arranged on the air valve sliding bracket, and the labyrinth locking member can lock or unlock the valve body assembly during the movement of the air valve sliding bracket; the button is installed on the air valve sliding bracket.

[0029] Specifically, when the user needs to exhaust the seat, the user presses the button, and the button drives the valve sliding bracket to move towards the maze bracket body. During the movement, the valve sliding bracket will compress the valve return elastic member. During this process, the maze locking member on the valve sliding bracket interacts with the maze structure on the maze bracket body. Thus, after the user presses the button and releases it, the valve sliding bracket retracts, enabling the maze locking member thereon to trigger the valve body assembly. Moreover, the retraction distance of the valve sliding bracket is greater than the pressing distance, so that the maze locking member can always trigger the valve body assembly, enabling the valve body assembly to maintain the exhaust state. During the exhaust process, the user does not need to keep pressing the button. When the exhaust is completed, the user presses the button again to keep the valve body assembly closed.

[0030] The present utility model provides an automotive seat, including a mounting base, an outer guard plate, and a commercial vehicle seat quick exhaust device; the maze bracket body of the commercial vehicle seat quick exhaust device is mounted on the mounting base, and the mounting base is mounted on the outer guard plate. The automotive seat has the above-mentioned advantages compared with the prior art, which will not be elaborated here. Description of the Drawings

[0031] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic structural diagram of the commercial vehicle seat quick exhaust device provided by the embodiment of the present utility model;

[0033] Figure 2 It is an axonometric view of the commercial vehicle seat quick exhaust device provided by the embodiment of the present utility model;

[0034] Figure 3 It is a cross-sectional view of the commercial vehicle seat quick exhaust device provided by the embodiment of the present utility model;

[0035] Figure 4 It is a partial cross-sectional view when the commercial vehicle seat quick exhaust device provided by the embodiment of the present utility model is exhausting;

[0036] Figure 5 It is a schematic diagram of the maze bracket body and the valve body assembly in the commercial vehicle seat quick exhaust device provided by the embodiment of the present utility model;

[0037] Figure 6 It is a schematic diagram of the maze bracket body in the commercial vehicle seat quick exhaust device provided by the embodiment of the present utility model;

[0038] Figure 7 Schematic diagram of the air valve sliding bracket in the quick exhaust device for commercial vehicle seats provided by the embodiment of the present utility model;

[0039] Figure 8 Schematic diagram of the labyrinth locking part in the quick exhaust device for commercial vehicle seats provided by the embodiment of the present utility model;

[0040] Figure 9 Schematic diagram of the movement of the protrusion during the unlocking process in the quick exhaust device for commercial vehicle seats provided by the embodiment of the present utility model.

[0041] Icon:

[0042] 100 - Labyrinth bracket body; 101 - Guide rail; 110 - Valve body assembly; 111 - Valve body box; 112 - Air valve air block plug; 113 - Air block plug return spring; 114 - Valve needle; 1141 - Convex ring; 1142 - Valve needle return spring; 115 - End cover; 116 - Control channel; 117 - Intake channel; 118 - Exhaust channel; 119 - Sealing seat; 120 - Labyrinth structure; 121 - Left slideway; 122 - Right slideway; 123 - Locking island; 124 - Guide island; 130 - Connecting seat; 140 - Plug;

[0043] 200 - Air valve sliding bracket; 201 - Air valve return elastic part; 210 - Labyrinth locking part; 211 - Stop point sliding seat; 212 - Labyrinth stop point slider; 2121 - Protrusion; 213 - Tail piece;

[0044] 300 - Button;

[0045] - Outer guard plate. Detailed implementation manners

[0046] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0047] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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. Therefore, it should not be construed as a limitation to the present utility model.

[0048] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically and clearly defined.

[0049] In the present utility model, unless otherwise clearly specified and defined, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0050] The following further describes the present utility model in detail through specific embodiments in conjunction with the drawings.

[0051] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9As shown in the figure, this embodiment provides a rapid exhaust device for a commercial vehicle seat, which includes a labyrinth bracket body 100, a valve sliding bracket 200, and a button 300. A valve body assembly 110 is arranged inside the labyrinth bracket body 100. A guide rail 101 is arranged on the outer wall of the labyrinth bracket body 100. The valve sliding bracket 200 is slidably sleeved on the labyrinth bracket body 100, and a guide groove adapted to the guide rail 101 is arranged inside the valve sliding bracket 200. A valve reset elastic member 201 is arranged between the labyrinth bracket body 100 and the valve sliding bracket 200, and the compression direction of the valve reset elastic member 201 is consistent with the sliding direction of the valve sliding bracket 200. A labyrinth structure 120 is provided on the labyrinth bracket body 100, and a labyrinth locking member 210 adapted to the labyrinth structure 120 is arranged on the valve sliding bracket 200. During the movement of the valve sliding bracket 200, the labyrinth locking member 210 can lock or unlock the valve body assembly 110. The button 300 is installed on the valve sliding bracket 200.

[0052] Specifically, when the user needs to exhaust the seat, the user presses the button 300, and the button 300 drives the valve sliding bracket 200 to move towards the labyrinth bracket body 100. During the movement, the valve sliding bracket 200 will compress the valve reset elastic member 201. During this process, the labyrinth locking member 210 on the valve sliding bracket 200 interacts with the labyrinth structure 120 on the labyrinth bracket body 100. Thus, after the user releases the button 300, the valve sliding bracket 200 retracts, so that the labyrinth locking member 210 thereon can trigger the valve body assembly 110. Moreover, the retraction distance of the valve sliding bracket 200 is greater than the pressing distance, so that the labyrinth locking member 210 can always trigger the valve body assembly 110, so that the valve body assembly 110 can maintain the exhaust state. During the exhaust process, the user does not need to keep pressing the button 300 all the time. When the exhaust is completed, the user presses the button 300 again to keep the valve body assembly 110 closed.

[0053] Among them, the valve reset elastic member 201 adopts a reset spring.

[0054] Among them, the valve body assembly 110 is fixed on the labyrinth bracket body 100 through a pin 140.

[0055] See Figure 1 - Figure 9As shown, in an alternative solution of this embodiment, the valve body assembly 110 includes a valve body box 111, an air valve plugging bolt 112, a plugging bolt return spring 113, a valve needle 114, and an end cap 115; a control channel 116 is provided in the valve body box 111 along its length direction, an air inlet channel 117 and an exhaust channel 118 are provided in the valve body box 111, both the air inlet channel 117 and the exhaust channel 118 are connected to the control channel 116, and a sealing seat 119 is provided in the control channel 116 at the position of the exhaust channel 118; end caps 115 are provided at both ends of the valve body box 111, the air valve plugging bolt 112 is inserted into the control channel 116 from the left side of the valve body box 111, the plugging bolt return spring 113 is located between the end cap 115 and the air valve plugging bolt 112, the valve needle 114 is inserted into the control channel 116 from the right side of the valve body box 111, and the valve needle 114 can abut against the air valve plugging bolt 112; the air valve sliding bracket 200 has a tail piece 213 that can drive the valve needle 114.

[0056] Among them, a connecting seat 130 for connecting the seat 130 is provided on the valve body box 111. The valve body box 111 can be installed on the installation base of the seat through the connecting seat 130.

[0057] See Figure 1 - Figure 9 As shown, in an alternative solution of this embodiment, a convex ring 1141 is provided on the outer wall of the valve needle 114, sealing rings are sleeved on both sides of the valve needle 114 where the convex ring 1141 is located, and the sealing rings on the valve needle 114 can slide-seal with the inner wall of the control channel 116.

[0058] Among them, a valve needle return spring 1142 is sleeved on the valve needle 114, one end of the valve needle return spring 1142 abuts against the sealing seat 119, and the other end abuts against the convex ring 1141.

[0059] See Figure 1 - Figure 9 As shown, in an alternative solution of this embodiment, the labyrinth locking member 210 includes a stop point sliding seat 211, a labyrinth stop point slider 212, and a tail piece 213; the stop point sliding seat 211 is fixed on the labyrinth bracket body 100, and the tail piece 213 is located at the bottom of the stop point sliding seat 211; the labyrinth stop point slider 212 is slidably installed on the stop point sliding seat 211, and the protrusion 2121 at the bottom of the labyrinth stop point slider 212 can fall into the labyrinth structure 120.

[0060] Among them, the labyrinth structure 120 includes a left slideway 121, a right slideway 122, a locking island 123, and a guiding island 124; the guiding island 124 and the locking island 123 are located between the left slideway 121 and the right slideway 122, the guiding island 124 is located at one end of the left slideway 121 and the right slideway 122, and the other ends of the left slideway 121 and the right slideway 122 are connected to each other; the protrusion 2121 is triangular.

[0061] Wherein, one end where the left slideway 121 and the right slideway 122 are connected to each other is closer to the button 300.

[0062] Specifically, when the button 300 is pressed to make the air valve sliding bracket 200 slide along the guide rail 101 on the outer wall of the labyrinth bracket body 100, the labyrinth locking member 210 on the air valve sliding bracket 200 moves synchronously, and the labyrinth blocking point slider 212 on the blocking point slide seat 211 can slide within the labyrinth structure 120. In the initial state without air exhaust, the protrusion 2121 at the bottom of the labyrinth blocking point slider 212 is located within the locking island 123, so that the air valve sliding bracket 200 cannot move relative to the labyrinth bracket body 100. When the user moves the labyrinth bracket body 100 by pressing the button 300, the protrusion 2121 at the bottom of the labyrinth blocking point slider 212 can move from the locking island 123 to the guiding island 124, and the protrusion 2121 slides into the right slideway 122 under the action of the guiding island 124. Then the user releases the button 300, and the air valve sliding bracket 200 resets under the action of the air valve reset elastic member 201. At the same time, the protrusion 2121 slides with the air valve sliding bracket 200 to one end where the left slideway 121 and the right slideway 122 are connected. At this time, the tail flap 213 can abut against the valve needle 114, so that the valve needle 114 pushes the air valve air-blocking plug 112 to move, so that the air valve air-blocking plug 112 no longer blocks the control channel 116, and the air inlet channel 117 and the air exhaust channel 118 are communicated. At this time, under the action of the air valve reset elastic member 201, the tail flap 213 can always abut against the valve needle 114, so as to keep the air exhaust unobstructed.

[0063] When the user presses the button 300 again, the protrusion 2121 slides with the air valve sliding bracket 200 into the left slideway 121. Then when the user releases the button 300, the air valve sliding bracket 200 resets under the action of the air valve reset elastic member 201. At this time, the protrusion 2121 slides from the left slideway 121 into the locking island 123. At this time, the tail flap 213 does not tightly abut against the valve needle 114, and the valve needle 114 resets under the action of the valve needle reset spring 1142, and the air valve air-blocking plug 112 resets under the action of the air-blocking plug reset spring 113, so that the air valve air-blocking plug 112 re-blocks the control channel 116 and blocks the air inlet channel 117 and the air exhaust channel 118.

[0064] This embodiment provides an automotive seat, including a mounting base, an outer guard plate, and a commercial vehicle seat rapid exhaust device; the labyrinth bracket body 100 of the commercial vehicle seat rapid exhaust device is installed on the mounting base, and the mounting base is installed on the outer guard plate.

[0065] Specifically, compared with the prior art, the automotive seat has the advantages of the above-mentioned commercial vehicle seat rapid exhaust device, which will not be elaborated here.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A commercial truck seat quick exhaust device, characterized in that: include: A labyrinth support body (100), a valve sliding support (200) and a button (300); A valve body assembly (110) is arranged in the labyrinth support body (100), a guide rail (101) is arranged on the outer wall of the labyrinth support body (100), the air valve sliding support (200) is slidably mounted on the labyrinth support body (100), and a guide groove adapted to the guide rail (101) is arranged in the air valve sliding support (200); An air valve reset elastic member (201) is provided between the labyrinth support body (100) and the air valve sliding support (200), and the compression direction of the air valve reset elastic member (201) is consistent with the sliding direction of the air valve sliding support (200); The labyrinth support body (100) is provided with a labyrinth structure (120), and the air valve sliding support (200) is provided with a labyrinth locking member (210) adapted to the labyrinth structure (120), so that the labyrinth locking member (210) can lock or unlock the valve body assembly (110) during the movement of the air valve sliding support (200); The button (300) is mounted on the air valve sliding bracket (200).

2. The commercial truck seat quick exhaust device according to claim 1, characterized in that: The valve body assembly (110) comprises a valve body box (111), an air valve air plug (112), an air plug return spring (113), a valve needle (114) and an end cover (115); A control channel (116) is provided in the valve body box (111) along its length direction, an air intake channel (117) and an air exhaust channel (118) are provided in the valve body box (111), both the air intake channel (117) and the air exhaust channel (118) are connected to the control channel (116), and a sealing seat (119) is provided in the control channel (116) at the location of the air exhaust channel (118); The end covers (115) are provided at both ends of the valve body box (111); the air valve gas plug (112) is inserted into the control channel (116) from the left side of the valve body box (111); the gas plug return spring (113) is located between the end cover (115) and the air valve gas plug (112); the valve needle (114) is inserted into the control channel (116) from the right side of the valve body box (111); and the valve needle (114) can abut against the air valve gas plug (112); The air valve sliding bracket (200) is provided with a tail baffle (213) capable of driving the valve needle (114).

3. The commercial truck seat quick exhaust device according to claim 2, characterized in that: The outer wall of the valve needle (114) is provided with a convex ring (1141), and sealing rings are sleeved on both sides of the convex ring (1141) on the valve needle (114). The sealing ring on the valve needle (114) can be slidably sealed with the inner wall of the control channel (116).

4. The commercial truck seat quick exhaust device according to claim 3, characterized in that: The valve needle (114) is sleeved with a valve needle return spring (1142), one end of the valve needle return spring (1142) abuts against the sealing seat (119), and the other end abuts against the convex ring (1141).

5. The commercial truck seat quick exhaust device according to claim 2, characterized in that: The valve body box (111) is provided with a connecting seat (130) for connecting to a seat (130).

6. The commercial truck seat quick exhaust device according to claim 2, characterized in that: The labyrinth locking member (210) comprises a stop point sliding seat (211), a labyrinth stop point sliding block (212) and the tail stopper (213); The stop point slide seat (211) is fixed on the labyrinth support body (100), and the tail stop sheet (213) is located at the bottom of the stop point slide seat (211); The labyrinth stop point slider (212) is slidably mounted on the stop point slide seat (211), and the protrusion (2121) at the bottom of the labyrinth stop point slider (212) can fall into the labyrinth structure (120).

7. The commercial truck seat quick exhaust device according to claim 6, characterized in that: The maze structure (120) comprises a left slideway (121), a right slideway (122), a locking island (123) and a guide island (124); The guide island (124) and the locking island (123) are located between the left slideway (121) and the right slideway (122); the guide island (124) is located at one end of the left slideway (121) and the right slideway (122); and the other ends of the left slideway (121) and the right slideway (122) are connected to each other; The protrusion (2121) is triangular in shape.

8. The commercial truck seat quick exhaust device according to claim 7, characterized in that: One end where the left slideway (121) and the right slideway (122) are connected to each other is closer to the button (300).

9. The commercial truck seat quick exhaust device according to any one of claims 1 to 8, characterized in that: The air valve reset elastic member (201) is a reset spring.

10. A car seat, characterized in that: It comprises a mounting base, an outer guard plate and a commercial truck seat quick exhaust device as claimed in any one of claims 1 to 9; The labyrinth support body (100) of the commercial truck seat quick exhaust device is mounted on the mounting base, and the mounting base is mounted on the outer guard plate.

Images