Pneumatic waist support massage system for automobile seat

Abstract

The invention discloses an automobile seat pneumatic waist support massage system, which relates to the technical field of automobile manufacturing, and comprises an inflation shell, a middle shell, a buffer shell, a plurality of massage units and a plurality of waist support units, a hollow cavity is formed in the inflation shell, and a massage deflation cavity, a waist support inflation cavity and a waist support deflation cavity are formed between the middle shell and the buffer shell; each massage unit comprises a massage air bag, a massage valve and a massage ventilation cavity communicated with the hollow cavity, a massage air outlet is formed in each massage ventilation cavity, and the massage valves are used for controlling opening and closing of the massage inflation openings and the massage air outlets; each waist support unit comprises a waist support air bag and a waist support ventilation cavity communicated with the waist support air bag, the waist support ventilation cavities are formed in the middle shell and communicated with a waist support inflation cavity through waist support inflation openings, waist support deflation openings are formed in the waist support ventilation cavities, and waist support inflation valves are arranged on the waist support inflation openings. And a waist support deflation valve is arranged on the waist support deflation port. The driving comfort is improved; and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and particularly to a pneumatic lumbar support massage system for automobile seats. Background Art

[0002] With the increase in the number of automobiles and the improvement of people's living standards, more and more attention is paid to the driving comfort of automobiles. Among them, the lumbar support and massage of the seat are important functions for automobile comfort.

[0003] In traditional lumbar support massage systems, there are few massage points, which affects the driving comfort of drivers; the solenoid valves in the lumbar support massage system heat up severely due to excessive air pressure, affecting the service life of the solenoid valves and the lumbar support massage system; the direct control circuit and LIN communication are not compatible, and the installation size is too large, resulting in inconvenient installation. Summary of the Invention

[0004] The purpose of the present invention is to provide a pneumatic lumbar support massage system for automobile seats to solve the problems existing in the above-mentioned prior art and improve the driving comfort of drivers and the service life of the lumbar support massage system.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The present invention provides a pneumatic lumbar support massage system for automobile seats, including an inflatable shell, an intermediate shell, a buffer shell, a plurality of massage units and a plurality of lumbar support units; a sealed hollow cavity is arranged in the inflatable shell, and a high-pressure air inlet communicating with the hollow cavity is arranged on the inflatable shell, and the high-pressure air inlet is connected with an air pump; the inflatable shell and the buffer shell are respectively hermetically connected with the intermediate shell, and the intermediate shell is located between the inflatable shell and the buffer shell; a massage air release cavity, a lumbar support inflation cavity and a lumbar support air release cavity are formed between the intermediate shell and the buffer shell, the lumbar support inflation cavity communicates with the hollow cavity, and both the massage air release cavity and the lumbar support air release cavity communicate with the outside air;

[0007] Each of the massage units includes a massage air bag, a massage valve and a massage ventilation cavity communicating with the massage air bag, the massage ventilation cavity is arranged in the intermediate shell, a massage inflation port is arranged on the inflatable shell corresponding to each of the massage ventilation cavities, the massage ventilation cavity communicates with the hollow cavity through the massage inflation port, a massage air release port facing the corresponding massage inflation port and communicating with the massage air release cavity is arranged on the massage ventilation cavity, and the massage valve is used to control the opening and closing of the massage inflation port and the massage air release port;

[0008] Each of the lumbar support units includes a lumbar support airbag and a lumbar support ventilation cavity communicating with the lumbar support airbag. The lumbar support ventilation cavity is arranged in the middle shell. A lumbar support inflation port is provided on the middle shell corresponding to each lumbar support ventilation cavity. The lumbar support ventilation cavity communicates with the lumbar support inflation cavity through the lumbar support inflation port. A lumbar support deflation port communicating with the lumbar support deflation cavity is provided on the lumbar support ventilation cavity. A lumbar support inflation valve is provided on the lumbar support inflation port, and a lumbar support deflation valve is provided on the lumbar support deflation port.

[0009] Preferably, the massage valve, the lumbar support inflation valve, and the lumbar support deflation valve each include a valve body bracket, a top column, a drive wire, and a spring. The drive wire can contract in the energized state. The valve body bracket is provided with a through hole, two fixed shafts, and two pins. The fixed shafts are located between the two pins, and the through hole is located between the two fixed shafts. Both ends of the drive wire are electrically connected to the two pins one by one. The drive wire passes through the top column and bypasses the two fixed shafts, and the drive wire is generally in a W shape as a whole. The top column passes through the through hole and is slidably matched with the through hole. The spring is sleeved on the top column. One end of the spring abuts against the step on the top column, and the other end abuts against the valve bracket. A plug cover is provided on the valve body bracket. The top column and the plug cover in the massage valve are coaxial with the massage inflation port and the massage deflation port, and one end of the plug cover in the massage valve is used to block the massage inflation port, and the other end is used to block the massage deflation port. One end of the plug cover in the lumbar support inflation valve is used to block the massage inflation port, and one end of the plug cover in the lumbar support deflation valve is used to block the massage deflation port.

[0010] It further includes a PCB circuit board. Each of the pins is electrically connected to the PCB circuit board. The PCB circuit board is electrically connected to a power supply. The PCB circuit board is used to realize the energization and de-energization of each drive wire. The drive wire is made of a nickel-titanium alloy memory wire that contracts when energized.

[0011] Preferably, rubber pads are fixedly provided at both the end of the plug cover in the massage valve for blocking the massage inflation port and the end for blocking the massage deflation port. A rubber pad is fixedly provided at the end of the plug cover in the lumbar support inflation valve for blocking the lumbar support inflation port, and a rubber pad is fixedly provided at the end of the plug cover in the lumbar support deflation valve for blocking the lumbar support deflation port.

[0012] Preferably, the massage valve, the lumbar support inflation valve, the lumbar support deflation valve, and the PCB circuit board are all arranged between the middle shell and the buffer shell. The plug cover in the massage valve is located between the middle shell and the inflation shell, and the top column in the massage valve passes through the massage deflation port.

[0013] Preferably, a LIN communication module is provided on the PCB circuit board.

[0014] Preferably, the middle shell is also provided with massage interfaces corresponding to the massage ventilation cavities one by one. The massage interfaces communicate with the corresponding massage ventilation cavities, and the massage air bags communicate with the massage interfaces in the same massage unit through connecting tubes.

[0015] Preferably, a connection cavity is provided inside the middle shell. One end of the connection cavity communicates with the lumbar support inflation cavity. A lumbar support air outlet is provided on the inflation shell, and the hollow cavity communicates with the lumbar support inflation cavity through the lumbar support air outlet.

[0016] The present invention has achieved the following technical effects compared with the prior art:

[0017] The pneumatic lumbar support massage system for an automobile seat of the present invention can effectively improve the driving comfort of the driver and the service life of the lumbar support massage system.

[0018] Specifically, in the massage valve, the lumbar support inflation valve and the lumbar support deflation valve of the present invention, the principle of the driving wire being energized and heated to shrink is used to change the position of the ejector rod, thereby controlling the opening and closing of the corresponding air ports, solving the problem of heat generation during long-term use of traditional solenoid valves, and the structures of the massage valve, the lumbar support inflation valve and the lumbar support deflation valve are simple, small in size and convenient to install.

[0019] Furthermore, as many massage air bags and lumbar support air bags as needed can be set in the pneumatic lumbar support massage system for an automobile seat of the present invention, which can meet the usage requirements;

[0020] Furthermore, during the use of the pneumatic lumbar support massage system for an automobile seat of the present invention, the inflation and deflation of each massage air bag and each lumbar support air bag can be controlled through the PCB circuit board. Therefore, a variety of massage modes can be combined, which is convenient to use;

[0021] Furthermore, while buffering the deflated gas, the buffer shell can achieve a silencing effect, with low working noise, thereby improving the user experience;

[0022] Furthermore, a LIN communication module is provided on the PCB circuit board, that is, it has a dual-channel mode of a direct control circuit and LIN communication. Adding a LIN communication mode on the basis of the traditional direct control circuit can be applicable to more new automobile seat electronic control systems. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Structural schematic diagram of the pneumatic lumbar support massage system for an automotive seat of the present invention;

[0025] Figure 2 Partial structural schematic diagram of the pneumatic lumbar support massage system for an automotive seat of the present invention;

[0026] Figure 3 Structural schematic diagram of the inflatable shell in the pneumatic lumbar support massage system for an automotive seat of the present invention;

[0027] Figure 4 For Figure 3 A - A sectional view of

[0028] Figure 5 Structural schematic diagram of the middle shell in the pneumatic lumbar support massage system for an automotive seat of the present invention;

[0029] Figure 6 Structural schematic diagram of the middle shell in the pneumatic lumbar support massage system for an automotive seat of the present invention;

[0030] Figure 7 Structural schematic diagram of the buffer shell in the pneumatic lumbar support massage system for an automotive seat of the present invention;

[0031] Figure 8 Structural schematic diagram of the massage valve in the pneumatic lumbar support massage system for an automotive seat of the present invention;

[0032] Figure 9 Structural schematic diagram of the massage valve in the pneumatic lumbar support massage system for an automotive seat of the present invention;

[0033] Figure 10 Partial structural schematic diagram of the pneumatic lumbar support massage system for an automotive seat of the present invention;

[0034] Figure 11 Partial structural schematic diagram of the pneumatic lumbar support massage system for an automotive seat of the present invention;

[0035] Among them, 1. Inflatable shell; 2. Massage airbag; 3. Lumbar support airbag; 4. Air pump; 5. Intermediate shell; 6. Buffer shell; 7. PCB circuit board; 8. Massage interface; 9. Massage valve; 10. Lumbar support inflation valve; 11. Lumbar support deflation valve; 12. Massage deflation cavity; 13. Lumbar support inflation cavity; 14. Lumbar support deflation cavity; 15. High-pressure air inlet; 16. Massage inflation port; 17. Lumbar support air outlet; 18. Lumbar support interface; 19. Connection port; 20. Connection cavity; 21. Massage ventilation cavity; 22. Massage deflation port; 23. Lumbar support inflation port; 24. Lumbar support deflation port; 25. Fixed shaft; 26. Pin; 27. Lumbar support ventilation cavity; 28. Valve body bracket; 29. Spring; 30. Thrust post; 31. Plug cover; 32. Rubber pad; 33. Driving wire. Detailed implementation manner

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] The purpose of the present invention is to provide a pneumatic lumbar support massage system for an automobile seat to solve the problems existing in the above-mentioned prior art and improve the driving comfort of the driver and the service life of the lumbar support massage system.

[0038] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0039] As Figures 1-11 shown, this embodiment provides a pneumatic lumbar support massage system for an automobile seat, including an inflatable shell 1, an intermediate shell 5, a buffer shell 6, a plurality of massage units and a plurality of lumbar support units; a sealed hollow cavity is provided inside the inflatable shell 1, and a high-pressure air inlet 15 communicating with the hollow cavity is provided on the inflatable shell 1, and the high-pressure air inlet 15 is connected to an air pump 4; the inflatable shell 1 and the buffer shell 6 are respectively hermetically connected to the intermediate shell 5, and the intermediate shell 5 is located between the inflatable shell 1 and the buffer shell 6; a massage deflation cavity 12, a lumbar support inflation cavity 13 and a lumbar support deflation cavity 14 are formed between the intermediate shell 5 and the buffer shell 6, the lumbar support inflation cavity 13 communicates with the hollow cavity, and both the massage deflation cavity 12 and the lumbar support deflation cavity 14 communicate with the outside air;

[0040] Each massage unit includes a massage airbag 2, a massage valve 9, and a massage ventilation cavity 21 communicated with the massage airbag 2. The massage ventilation cavity 21 is arranged in the middle shell 5. A massage inflation port 16 is arranged on the inflation shell 1 corresponding to each massage ventilation cavity 21. The massage ventilation cavity 21 communicates with the hollow cavity through the massage inflation port 16. A massage deflation port 22 is arranged on the massage ventilation cavity 21, which is opposite to the corresponding massage inflation port 16 and communicated with the massage deflation cavity 12. The massage valve 9 is used to control the opening and closing of the massage inflation port 16 and the massage deflation port 22;

[0041] Each lumbar support unit includes a lumbar support airbag 3 and a lumbar support ventilation cavity 27 communicated with the lumbar support airbag 3. The lumbar support ventilation cavity 27 is arranged in the middle shell 5. A lumbar support inflation port 23 is arranged on the middle shell 5 corresponding to each lumbar support ventilation cavity 27. The lumbar support ventilation cavity 27 communicates with the lumbar support inflation cavity 13 through the lumbar support inflation port 23. A lumbar support deflation port 24 communicated with the lumbar support deflation cavity 14 is arranged on the lumbar support ventilation cavity 27. A lumbar support inflation valve 10 is arranged on the lumbar support inflation port 23, and a lumbar support deflation valve 11 is arranged on the lumbar support deflation port 24.

[0042] In this embodiment, the massage valve 9, the lumbar support inflation valve 10, and the lumbar support deflation valve 11 have the same structure. The massage valve 9, the lumbar support inflation valve 10, and the lumbar support deflation valve 11 all include a valve body bracket 28, a top column 30, a driving wire 33, and a spring 29. The driving wire 33 can contract in the energized state. The valve body bracket 28 is provided with a through hole, two fixed shafts 25, and two pins 26. The fixed shafts 25 are located between the two pins 26, and the through hole is located between the two fixed shafts 25. The two ends of the driving wire 33 are electrically connected to the two pins 26 one by one. The driving wire 33 passes through the top column 30 and bypasses the two fixed shafts 25, and the driving wire 33 is integrally in a W shape. The top column 30 passes through the through hole and is slidably matched with the through hole. The spring 29 is sleeved on the top column 30. One end of the spring 29 abuts against the step on the top column 30, and the other end abuts against the valve bracket. A plug 31 is arranged on the valve body bracket 28; the top column 30 and the plug 31 in the massage valve 9 are coaxial with the massage inflation port 16 and the massage deflation port 22, and one end of the plug 31 in the massage valve 9 is used to block the massage inflation port 16, and the other end is used to block the massage deflation port 22; one end of the plug 31 in the lumbar support inflation valve 10 is used to block the massage inflation port 16, and one end of the plug 31 in the lumbar support deflation valve 11 is used to block the massage deflation port 22;

[0043] The pneumatic lumbar support massage system of the vehicle seat in this embodiment further includes a PCB circuit board 7. Each pin 26 is electrically connected to the PCB circuit board 7, and the PCB circuit board 7 is electrically connected to a power supply. The PCB circuit board 7 is used to realize the on-off of each drive wire 33. The drive wire 33 that can generate heat and shorten its length in the energized state is a mature existing product, and the specific working principle of the drive wire 33 will not be elaborated in this embodiment. In this embodiment, the drive wire 33 adopts a nickel-titanium alloy memory wire that contracts when energized, which is also called a NiTi drive wire and a titanium wire that contracts when energized, and can be directly purchased in the market.

[0044] In this embodiment, rubber pads 32 are fixedly provided at both ends of the plug 31 in the massage valve 9 for blocking one end of the massage inflation port 16 and for blocking one end of the massage deflation port 22; rubber pads 32 are fixedly provided at one end of the plug 31 in the lumbar support inflation valve 10 for blocking the lumbar support inflation port 23, and rubber pads 32 are fixedly provided at one end of the plug 31 in the lumbar support deflation valve 11 for blocking the lumbar support deflation port 24.

[0045] In this embodiment, the massage valve 9, the lumbar support inflation valve 10, the lumbar support deflation valve 11 and the PCB circuit board 7 are all arranged between the middle shell 5 and the buffer shell 6; the plug 31 in the massage valve 9 is located between the middle shell 5 and the inflation shell 1, and the ejector pin 30 in the massage valve 9 passes through the massage deflation port 22.

[0046] In this embodiment, a LIN communication module is provided on the PCB circuit board 7.

[0047] In this embodiment, massage interfaces 8 corresponding to the massage ventilation cavities 21 one by one are further provided on the middle shell 5. The massage interfaces 8 are communicated with the corresponding massage ventilation cavities 21, and the massage air bags 2 are communicated with the massage interfaces 8 in the same massage unit through connecting pipes.

[0048] In this embodiment, a connection cavity 20 is arranged in the middle shell 5. One end of the connection cavity 20 is communicated with the lumbar support inflation cavity 13 through a connection port 19 on the middle shell 5. A lumbar support air outlet 17 is provided on the inflation shell 1, and the hollow cavity is communicated with the lumbar support inflation cavity 13 through the lumbar support air outlet 17.

[0049] The working principle of the pneumatic lumbar support massage system of the vehicle seat in this embodiment is as follows:

[0050] First, the air pump 4 is turned on to form high-pressure gas in the hollow cavity of the inflation shell 1. The PCB circuit board 7 controls each massage valve 9, lumbar support inflation valve 10, and lumbar support deflation valve 11 to be opened or closed on time according to a preset program to realize the inflation and deflation of each massage air bag 2 and each lumbar support air bag 3.

[0051] The inflation process of the massage airbag 2 is as follows: The PCB circuit board 7 energizes the drive wire 33 in the massage valve 9. After the drive wire 33 is energized, it generates heat and contracts in length. When the drive wire 33 contracts, the drive ejector 30 moves toward the massage air release port 22 against the elastic force of the spring 29 and closes the massage air release port 22. At the same time, a gap is formed between the plug 31 and the massage air inflation port 16. As Figure 10 shown, the high-pressure gas in the hollow cavity enters the corresponding massage airbag 2 through the massage air inflation port 16, the massage ventilation cavity 21, the massage interface 8, and the pipeline.

[0052] The deflation process of the massage airbag 2 is as follows: The PCB circuit board 7 stops energizing the drive wire 33 in the massage valve 9. The drive wire 33 gradually cools down and expands to restore its original shape. When the drive wire 33 expands due to cooling, the spring 29 drives the ejector 30 to move toward the massage air inflation port 16 and closes the massage air inflation port 16. At the same time, a gap is formed between the plug 31 and the massage air release port 22. As Figure 11 shown, the high-pressure gas in the massage airbag 2 enters the massage air release cavity 12 through the pipeline, the massage interface 8, the massage ventilation cavity 21, and the massage air release port 22, and is discharged into the external air through the massage air release cavity 12.

[0053] The inflation process of the lumbar support airbag 3 is as follows: The PCB circuit board 7 energizes the drive wire 33 in the lumbar support inflation valve 10. After the drive wire 33 is energized, it generates heat and contracts. When the drive wire 33 contracts, the drive ejector 30 moves away from the lumbar support air inflation port 23 against the elastic force of the spring 29 and opens the lumbar support air inflation port 23. The high-pressure gas in the hollow cavity enters the lumbar support inflation cavity 13 through the lumbar support air outlet 17, the connection cavity 20, and the connection port 19. The high-pressure gas in the lumbar support inflation cavity 13 enters the corresponding lumbar support airbag 3 through the lumbar support air inflation port 23, the lumbar support ventilation cavity 27, the lumbar support interface 18, and the pipeline.

[0054] The deflation process of the lumbar support airbag 3 is as follows: The PCB circuit board 7 energizes the drive wire 33 in the lumbar support deflation valve 11. After the drive wire 33 is energized, it generates heat and contracts. When the drive wire 33 contracts, the drive ejector 30 moves away from the lumbar support air release port 24 against the elastic force of the spring 29 and opens the lumbar support air release port 24. The high-pressure gas in the lumbar support airbag 3 enters the lumbar support deflation cavity 14 through the pipeline, the lumbar support interface 18, the lumbar support ventilation cavity 27, and the lumbar support air release port 24, and is discharged into the external air through the lumbar support deflation cavity 14.

[0055] In the present invention, specific examples are used to illustrate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An automotive seat pneumatic lumbar support massage system, characterized in that: It includes an inflatable shell, an intermediate shell, a buffer shell, a plurality of massage units and a plurality of lumbar support units; a sealed hollow cavity is arranged in the inflatable shell, and a high-pressure air inlet communicated with the hollow cavity is arranged on the inflatable shell, and the high-pressure air inlet is connected with an air pump; the inflatable shell and the buffer shell are respectively hermetically connected with the intermediate shell, and the intermediate shell is located between the inflatable shell and the buffer shell; a massage air release cavity, a lumbar support inflation cavity and a lumbar support air release cavity are formed between the intermediate shell and the buffer shell, the lumbar support inflation cavity is communicated with the hollow cavity, and both the massage air release cavity and the lumbar support air release cavity are communicated with the external air; Each of the massage units includes a massage air bag, a massage valve and a massage ventilation cavity communicated with the massage air bag. The massage ventilation cavity is arranged in the intermediate shell, and a massage inflation port is arranged on the inflatable shell corresponding to each of the massage ventilation cavities. The massage ventilation cavity is communicated with the hollow cavity through the massage inflation port. A massage air release port which is opposite to the corresponding massage inflation port and communicated with the massage air release cavity is arranged on the massage ventilation cavity. The massage valve is used for controlling the opening and closing of the massage inflation port and the massage air release port; Each of the lumbar support units includes a lumbar support air bag and a lumbar support ventilation cavity communicated with the lumbar support air bag. The lumbar support ventilation cavity is arranged in the intermediate shell, and a lumbar support inflation port is arranged on the intermediate shell corresponding to each of the lumbar support ventilation cavities. The lumbar support ventilation cavity is communicated with the lumbar support inflation cavity through the lumbar support inflation port. A lumbar support air release port communicated with the lumbar support air release cavity is arranged on the lumbar support ventilation cavity. A lumbar support inflation valve is arranged on the lumbar support inflation port, and a lumbar support air release valve is arranged on the lumbar support air release port.

2. The pneumatic lumbar support massage system for vehicle seats according to claim 1, wherein: The massage valve, the lumbar support inflation valve and the lumbar support air release valve all include a valve body bracket, a top column, a driving wire and a spring. The driving wire can contract in the energized state. The valve body bracket is provided with a through hole, two fixed shafts and two pins. The fixed shafts are located between the two pins, and the through hole is located between the two fixed shafts. The two ends of the driving wire are electrically connected to the two pins one by one. The driving wire passes through the top column and bypasses the two fixed shafts, and the driving wire is integrally in a W shape. The top column passes through the through hole and is slidably matched with the through hole. The spring is sleeved on the top column. One end of the spring abuts against the step on the top column, and the other end abuts against the valve support. A plug cover is arranged on the valve body bracket; the top column and the plug cover in the massage valve are coaxial with the massage inflation port and the massage air release port, and one end of the plug cover in the massage valve is used for blocking the massage inflation port and the other end is used for blocking the massage air release port; one end of the plug cover in the lumbar support inflation valve is used for blocking the massage inflation port, and one end of the plug cover in the lumbar support air release valve is used for blocking the massage air release port; It further includes a PCB circuit board. Each of the pins is electrically connected to the PCB circuit board, and the PCB circuit board is electrically connected to a power supply. The PCB circuit board is used to realize the on / off of each driving wire; the driving wire is made of a nickel-titanium alloy memory wire that shrinks when electrified.

3. The pneumatic lumbar massage system for vehicle seats according to claim 2, characterized in that: Rubber pads are fixedly provided at both ends of the plug cap in the massage valve for blocking one end of the massage air inlet and for blocking one end of the massage air outlet; a rubber pad is fixedly provided at one end of the plug cap in the lumbar support inflation valve for blocking the lumbar support air inlet, and a rubber pad is fixedly provided at one end of the plug cap in the lumbar support deflation valve for blocking the lumbar support air outlet.

4. The pneumatic lumbar support massage system for a vehicle seat according to claim 2, characterized in that: The massage valve, the lumbar support inflation valve, the lumbar support deflation valve and the PCB circuit board are all arranged between the middle shell and the buffer shell; the plug cap in the massage valve is located between the middle shell and the inflation shell, and the ejector pin in the massage valve passes through the massage air outlet.

5. The pneumatic lumbar massage system for vehicle seats according to claim 2, characterized in that: A LIN communication module is provided on the PCB circuit board.

6. The pneumatic lumbar support massage system for automotive seats according to claim 1, wherein: The middle shell is further provided with massage interfaces corresponding to the massage ventilation cavities one by one. The massage interfaces are communicated with the corresponding massage ventilation cavities, and the massage air bags are communicated with the massage interfaces in the same massage unit through connecting pipes.

7. The pneumatic lumbar support massage system for vehicle seats according to claim 1, wherein: A connection cavity is arranged in the middle shell. One end of the connection cavity is communicated with the lumbar support inflation cavity. The inflation shell is provided with a lumbar support air outlet, and the hollow cavity is communicated with the lumbar support inflation cavity through the lumbar support air outlet.

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