Memory alloy wire air valve group of automobile seat

Abstract

The utility model belongs to the technical field of automobile seat air valves, and particularly relates to an automobile seat memory alloy wire air valve group. The memory alloy wire air valve set of the automobile seat comprises an air bin, a main partition plate is arranged on a bin bottom plate of the air bin, and an air channel chamber is defined by the main partition plate and the bin side wall; a plurality of n-shaped partition plates are arranged in the air channel chamber, the two ends of each n-shaped partition plate are connected with the main partition plate, and each n-shaped partition plate is in a nesting doll shape which is gradually enlarged from inside to outside, so that a plurality of air channels are separated in the air channel chamber; the main partition plate is provided with air inlet holes and air outlet holes which are communicated with the air channels, the air inlet holes are located in one side of the main partition plate, and the air outlet holes are located in the other side of the main partition plate. The auxiliary partition plate is connected with the main partition plate and the bin side wall of the air bin so that the air inlet hole can be separated into a public air inlet chamber, and the air outlet hole can be separated into a public air outlet chamber. According to the air valve set, the number of the needed partition plates is smaller when the number of the air cavities is the same, and the size of the air valve set can be smaller.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive seat air valves, and particularly relates to a shape memory alloy wire air valve group for automotive seats. Background Art

[0002] A patent with publication number CN115126902A discloses an automotive seat air valve aiming to reduce the overall volume of the air valve. After actual use, it is found that as long as the air flow passes through the shape memory alloy wire, there is a risk of temperature fluctuation of the shape memory alloy wire, for example, when the frequency of air flow adjustment is too fast.

[0003] Currently, the structures of air valve groups that use shape memory alloy wires and the air flow does not pass through the shape memory alloy wires are mostly shown in the patent with publication number CN221437825U. The principle is to separate the chamber where the shape memory alloy wire is located from the air chamber through a sealing structure at the valve body. However, currently, such air valve groups all adopt multiple juxtaposed air chambers, and a pair of shape memory alloy wire valves are arranged in each air chamber. A partition is required between adjacent air chambers. Even if the distance between the shape memory alloy wire valves is minimized, it is still inevitable that the partition occupies space, making it difficult to further reduce the volume of the air valve group. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide a shape memory alloy wire air valve group for automotive seats to solve the technical problem that in the current air valve group that separates the shape memory alloy wire from the air chamber, a partition is necessary between the air chambers, resulting in difficulty in further reducing the volume of the air valve group.

[0005] To solve the above technical problem, the present utility model provides a shape memory alloy wire air valve group for automotive seats, including: an air storage chamber, a main partition is provided on the bottom plate of the chamber to enclose an air passage chamber with the chamber side wall; a plurality of U-shaped partitions are provided in the air passage chamber, and both ends of each U-shaped partition are connected to the main partition and are in a nested shape that gradually increases from the inside to the outside to separate a plurality of air passages in the air passage chamber; air pipes corresponding to the air passages are provided on the side wall of the air storage chamber, and each air pipe penetrates into the air passage chamber and is communicated with the corresponding air passage; intake holes and exhaust holes communicated with each air passage are opened on the main partition, and each intake hole is located on one side of the main partition, and each exhaust hole is located on the other side of the main partition; a secondary partition, which is connected to the main partition and the side wall of the air storage chamber to separate the intake holes into a common intake chamber and the exhaust holes into a common exhaust chamber.

[0006] Furthermore, an intake valve body conduit corresponding to the intake hole is provided on the side wall of the common air intake chamber; an intake valve body is provided in the intake valve body conduit, and the intake valve body is sealed and matched with the inner wall of the intake valve body conduit; an intake hole plug is provided at the head end of each intake valve body, and an intake hanging groove is provided at the tail end to hang the intake memory alloy wire; each intake valve body is connected to an intake spring to be pushed toward the corresponding intake hole by the intake spring, so that the intake hole plug keeps the intake hole normally closed.

[0007] Furthermore, an exhaust valve body conduit corresponding to the exhaust hole is provided on the side wall of the common exhaust chamber; an exhaust valve body is provided in the exhaust valve body conduit, and the exhaust valve body is sealed and matched with the inner wall of the exhaust valve body conduit; an exhaust hole plug is provided at the head end of each exhaust valve body, and an exhaust hanging groove is provided at the tail end to hang the exhaust memory alloy wire; each exhaust valve body is connected to an exhaust spring to be pushed toward the corresponding exhaust hole by the exhaust spring, so that the exhaust hole plug keeps the exhaust hole normally closed.

[0008] Furthermore, an air intake channel is opened on the side wall of the common air intake chamber to connect with the air intake buffer bin; a support ring is provided in the air intake buffer bin; a limit column and an air intake buffer hole are provided in the inner area of the support ring; a buffer spring is passed through the limit column, sealed with the limit column, and limited by the limit column to abut against the support ring to separate the air intake buffer hole from the air intake channel, and is suitable for deforming when air flow is pumped into the air intake buffer hole, generating a gap with the support ring, so that the air intake buffer hole and the air intake channel are restored to be connected.

[0009] Furthermore, an air pump nozzle is provided on the side wall of the air bin and is communicated with the air inlet buffer hole.

[0010] Furthermore, a detection nozzle is provided on the side wall of the air inlet buffer chamber, which is connected to the air pressure detection chamber; and a pressure sensor is provided in the air pressure detection chamber.

[0011] Furthermore, an exhaust passage is provided on the compartment cover plate surrounding the common exhaust chamber.

[0012] Furthermore, each of the airways is provided with airway silencer cotton.

[0013] Furthermore, exhaust channel silencer cotton is provided in the exhaust channel.

[0014] The beneficial effects of the present utility model are as follows. The present utility model aims to solve the technical problem that in the current air valve group that separates the shape memory alloy wire from the air chamber, a partition must be used to separate the air chambers, resulting in difficulty in further reducing the volume of the air valve group. The air valve group of the automotive seat shape memory alloy wire of the present utility model adopts a method of arranging a number of inverted U-shaped partitions in the air passage chamber to separate the required air passages in the air passage chamber. The inverted U-shaped partitions only occupy the internal space of the air passage chamber and will not squeeze the air passages with relatively small space requirements. At the same time, the air inlet holes can be opened on one side of the main partition enclosing the air passage chamber, and the exhaust holes can be opened on the other side. Only one sub-partition is needed to separate all the air inlet holes in the common air inlet chamber and all the exhaust holes in the common exhaust chamber, thus achieving fewer partitions required when the number of air chambers is the same, and enabling the volume of the air valve group to be smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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 the specific embodiments or the prior description. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a schematic structural view of the air valve group of the automotive seat shape memory alloy wire of the present utility model;

[0017] Figure 2 is a cross-section of the air valve group of the automotive seat shape memory alloy wire of the present utility model Figure 1 ;

[0018] Figure 3 is a cross-section of the air valve group of the automotive seat shape memory alloy wire of the present utility model Figure 2 ;

[0019] Figure 4 is a cross-section of the air valve group of the automotive seat shape memory alloy wire of the present utility model Figure 3 ;

[0020] Figure 5 is a cross-section of the air valve group of the automotive seat shape memory alloy wire of the present utility model Figure 4 ;

[0021] Figure 6 is a cross-section of the air valve group of the automotive seat shape memory alloy wire of the present utility model Figure 5 ;

[0022] In the figure:

[0023] air storage chamber 100, main partition 110, air inlet hole 111, exhaust hole 112, sub-partition 120,

[0024] Airway chamber 200, U-shaped partition 210, airway 220, airway sound-absorbing cotton 221,

[0025] Trachea 300,

[0026] Common intake chamber 410, intake passage 411, common exhaust chamber 420, exhaust passage 421, exhaust passage sound-absorbing cotton 422,

[0027] Intake valve body conduit 511, intake valve body 512, intake hole plug 513, intake hanging groove 514, intake shape memory alloy wire 515, intake spring 516,

[0028] Exhaust valve body conduit 521, exhaust valve body 522, exhaust hole plug 523, exhaust hanging groove 524, exhaust shape memory alloy wire 525, exhaust spring 526,

[0029] Intake buffer chamber 600, support ring 610, limit post 620, intake buffer hole 630, buffer spring piece 640, air pump nozzle 650, detection nozzle 660, air pressure detection chamber 670, pressure sensor 680. Detailed implementation mode

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Embodiment

[0032] As Figure 1 shown, the present utility model provides an automotive seat shape memory alloy wire air valve group, including: air chamber 100, combined with Figure 2 , a main partition 110 is provided on the bottom plate of the chamber to form an airway chamber 200 with the chamber side wall; in this embodiment, the main partition 110 is an L-shaped plate; it should be noted that, referring to Figure 1 , the chamber cover plate of the air chamber 100 also forms the airway chamber 200, and the same applies to the subsequent common intake chamber 410, common exhaust chamber 420, and intake buffer chamber 600; as Figure 2 shown, several U-shaped partitions 210 are provided in the airway chamber 200, and both ends of each U-shaped partition 210 are connected to the main partition 110 and are in a nested doll shape that gradually increases from the inside to the outside to separate several airways 220 in the airway chamber 200; in this embodiment, there are two U-shaped partitions 210, separating three airways 220 in the airway chamber 200; as Figure 2As shown, on the side wall of the air chamber 100, there is an air pipe 300 corresponding to the air duct 220, and each air pipe 300 penetrates into the air duct chamber 200 and is communicated with the corresponding air duct 220; in this embodiment, there are three air pipes 300; as Figure 2 and Figure 3 shown, on the main partition 110, there are air inlet holes 111 and air outlet holes 112 communicated with the respective air ducts 220, and each air inlet hole 111 is located on one side of the main partition 110, and each air outlet hole 112 is located on the other side of the main partition 110; as Figure 2 shown, there is a secondary partition 120, which is connected to the main partition 110 and the side wall of the air chamber 100, so as to separate the air inlet holes 111 into the common air inlet chamber 410 and separate the air outlet holes 112 into the common air outlet chamber 420.

[0033] This automotive seat memory alloy wire air valve group adopts the method of arranging several U-shaped partitions 210 in the air duct chamber 200 to separate the required air ducts 220 in the air duct chamber 200. The U-shaped partitions 210 only occupy the internal space of the air duct chamber 200 and will not squeeze the air ducts 220 with less space requirements. At the same time, the air inlet holes 111 can be opened on one side of the main partition 110 surrounding the air duct chamber 200, and the air outlet holes 112 can be opened on the other side. Only one secondary partition 120 can separate all the air inlet holes 111 into the common air inlet chamber 410 and separate all the air outlet holes 112 into the common air outlet chamber 420. Thus, when the number of air cavities is the same, the number of partitions required is less, and the volume of the air valve group can be smaller.

[0034] As Figure 3 shown, on the side wall of the air chamber surrounding the common air inlet chamber 410, there is an air inlet valve body conduit 511 corresponding to the air inlet hole 111; in each air inlet valve body conduit 511, there is an air inlet valve body 512, and the air inlet valve body 512 is in sealing cooperation with the inner wall of the air inlet valve body conduit 511; in this embodiment, the way of the air inlet valve body 512 being in sealing cooperation with the inner wall of the air inlet valve body conduit 511 is interference fit; at the head end of each air inlet valve body 512, there is an air inlet hole plug 513, and at the tail end, there is an air inlet hanging groove 514 to hang the air inlet memory alloy wire 515; each air inlet valve body 512 is connected to an air inlet spring 516 to be pushed by the air inlet spring 516 towards the corresponding air inlet hole 111, so that the air inlet hole plug 513 normally closes the air inlet hole 111. When the air inlet memory alloy wire 515 is triggered and deformed, it can pull the corresponding air inlet valve body 512 backward, so that the corresponding air inlet hole plug 513 is separated from the corresponding air inlet hole 111, and the gas in the common air inlet chamber 410 enters the corresponding air inlet hole 111, and then enters the corresponding airbag through the corresponding air pipe 300, so as to inflate.

[0035] As Figure 4As shown in the figure, an exhaust valve body conduit 521 corresponding to the exhaust hole 112 is provided on the side wall of the bin enclosing the common exhaust chamber 420; an exhaust valve body 522 is provided in each of the exhaust valve body conduits 521, and the exhaust valve body 522 is in sealing cooperation with the inner wall of the exhaust valve body conduit 521; in this embodiment, the sealing cooperation mode between the exhaust valve body 522 and the inner wall of the exhaust valve body conduit 521 is interference fit; the head end of each exhaust valve body 522 is provided with an exhaust hole plug 523, and the tail end is provided with an exhaust hanging groove 524 to hang the exhaust shape memory alloy wire 525; each exhaust valve body 522 is connected to an exhaust spring 526 to be pushed by the exhaust spring 526 towards the corresponding exhaust hole 112, so that the exhaust hole plug 523 normally closes the exhaust hole 112. When the exhaust shape memory alloy wire 525 is triggered and deformed, it can pull the corresponding exhaust valve body 522 backward, separate the corresponding exhaust hole plug 523 from the corresponding exhaust hole 112, and enable the gas in the corresponding air bag to enter the common exhaust chamber 420 through the corresponding air pipe 300 and be discharged outside the air valve group, thereby discharging gas.

[0036] After inflation is completed, all the intake holes 111 and all the exhaust holes 112 are blocked by the intake hole plug 513 and the exhaust hole plug 523 respectively to achieve pressure holding.

[0037] As Figure 2 shown, an intake channel 411 is formed on the side wall of the bin enclosing the common intake chamber 410 to communicate with the intake buffer bin 600; combined with Figure 5 , a support ring 610 is provided in the intake buffer bin 600; a limiting post 620 and an intake buffer hole 630 are provided in the inner area of the support ring 610; combined with Figure 2 and Figure 6 ( Figure 5 the buffer spring piece 640 in is hidden), the buffer spring piece 640 is threaded on the limiting post 620, is in sealing cooperation with the limiting post 620, and is limited by the limiting post 620 to abut against the support ring 610 to cut off the intake buffer hole 630 from the intake channel 411, and is adapted to deform when there is air flow pumped into the intake buffer hole 630, generate a gap with the support ring 610, and restore the communication between the intake buffer hole 630 and the intake channel 411, and then enter the common intake chamber 410. In this embodiment, the buffer spring piece 640 can but is not limited to be a rubber ring.

[0038] As Figure 5 shown, an air pump nozzle 650 is provided on the side wall of the air bin 100, which is communicated with the intake buffer hole 630.

[0039] As Figure 5 and Figure 4As shown, a detection nozzle 660 is provided on the side wall of the intake buffer bin 600, which is communicated with a pneumatic pressure detection bin 670; a pressure sensor 680 is provided in the pneumatic pressure detection bin 670, which can be used to detect the air pressure during intake.

[0040] As Figure 2 and Figure 1 shown, an exhaust passage 421 is opened on the bin cover plate surrounding the common exhaust chamber 420.

[0041] As Figure 5 shown, airway sound-absorbing cotton 221 is provided in each airway 220 to reduce the noise during inflation.

[0042] As Figure 5 shown, exhaust passage sound-absorbing cotton 422 is provided in the exhaust passage 421 to reduce the noise during deflation.

[0043] In summary, the memory alloy wire air valve group of the automotive seat of the present application adopts the method of arranging a plurality of U-shaped partition plates 210 in the airway chamber 200 to partition the required airways 220 in the airway chamber 200. The U-shaped partition plates 210 only occupy the internal space of the airway chamber 200 and will not squeeze the airways 220 with less space requirements. At the same time, the intake holes 111 can be opened on one side of the main partition plate 110 surrounding the airway chamber 200, and the exhaust holes 112 can be opened on the other side. Only one auxiliary partition plate 120 is needed to separate all the intake holes 111 in the common intake chamber 410 and all the exhaust holes 112 in the common exhaust chamber 420, so that when the number of air cavities is the same, the number of partition plates required is less, and the volume of the air valve group can be smaller.

[0044] In the embodiments provided in the present application, it should be understood that the disclosed systems and devices can be implemented in other ways. The embodiments described above are only illustrative. For example, the division of the mechanism is only a logical function division, and there can be other division methods in actual implementation. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0045] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 should not be construed as a limitation of the present invention.

[0046] Based on the above-mentioned ideal embodiments of the present utility model as inspiration, through the above description, those skilled in the relevant art can, without departing from the technical idea of the present utility model, make various changes and modifications. The technical scope of the present utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An air valve group of a memory alloy wire for an automobile seat, characterized in that, Comprising: An air chamber (100), on the bottom plate of which a main partition (110) is provided to enclose an air passage chamber (200) with the chamber side wall; A number of U-shaped partitions (210) are provided in the air passage chamber (200), and both ends of each U-shaped partition (210) are connected to the main partition (110), and are in a nested doll shape that gradually increases from the inside to the outside, so as to separate a number of air passages (220) in the air passage chamber (200); On the chamber side wall of the air chamber (100), air pipes (300) corresponding to the air passages (220) are provided, and each air pipe (300) penetrates into the air passage chamber (200) and is communicated with the corresponding air passage (220); On the main partition (110), air inlet holes (111) and air outlet holes (112) communicated with the air passages (220) are opened, and each air inlet hole (111) is located on one side of the main partition (110), and each air outlet hole (112) is located on the other side of the main partition (110); A secondary partition (120), which is connected to the main partition (110) and the chamber side wall of the air chamber (100), so as to separate the air inlet holes (111) into a common air inlet chamber (410), and separate the air outlet holes (112) into a common air outlet chamber (420).

2. The memory alloy wire air valve group for an automotive seat according to claim 1, wherein On the chamber side wall enclosing the common air inlet chamber (410), an air inlet valve body conduit (511) corresponding to the air inlet hole (111) is provided; An air inlet valve body (512) is provided in each air inlet valve body conduit (511), and the air inlet valve body (512) is in sealed cooperation with the inner wall of the air inlet valve body conduit (511); At the head end of each air inlet valve body (512), an air inlet hole plug (513) is provided, and at the tail end, an air inlet hanging groove (514) is provided to hang the air inlet memory alloy wire (515); Each air inlet valve body (512) is connected to an air inlet spring (516), so as to be pushed by the air inlet spring (516) towards the corresponding air inlet hole (111), so that the air inlet hole plug (513) normally closes the air inlet hole (111).

3. The memory alloy wire air valve group for an automotive seat according to claim 1, wherein On the chamber side wall enclosing the common air outlet chamber (420), an air outlet valve body conduit (521) corresponding to the air outlet hole (112) is provided; An air outlet valve body (522) is provided in each air outlet valve body conduit (521), and the air outlet valve body (522) is in sealed cooperation with the inner wall of the air outlet valve body conduit (521); At the head end of each air outlet valve body (522), an air outlet hole plug (523) is provided, and at the tail end, an air outlet hanging groove (524) is provided to hang the air outlet memory alloy wire (525); Each air outlet valve body (522) is connected to an air outlet spring (526), so as to be pushed by the air outlet spring (526) towards the corresponding air outlet hole (112), so that the air outlet hole plug (523) normally closes the air outlet hole (112).

4. The memory alloy wire air valve group for an automotive seat according to claim 1, wherein On the chamber side wall enclosing the common air inlet chamber (410), an air inlet passage (411) is opened to communicate with an air inlet buffer chamber (600); A support ring (610) is provided in the intake buffer chamber (600); A limit post (620) and an intake buffer hole (630) are provided in the area inside the ring of the support ring (610); A buffer spring piece (640) is sleeved on the limit post (620), is in sealing cooperation with the limit post (620), and is limited by the limit post (620) to abut against the support ring (610), so as to cut off the intake buffer hole (630) from the intake passage (411), and is adapted to deform when air flow is pumped into the intake buffer hole (630), generating a gap with the support ring (610), so that the intake buffer hole (630) is restored to communicate with the intake passage (411).

5. The memory alloy wire air valve group for an automotive seat according to claim 4, wherein An air pump nozzle (650) is provided on the side wall of the air chamber (100), and is communicated with the intake buffer hole (630).

6. The memory alloy wire air valve group for an automotive seat according to claim 4, wherein A detection nozzle (660) is provided on the side wall of the intake buffer chamber (600), and is communicated with a pressure detection chamber (670); A pressure sensor (680) is provided in the pressure detection chamber (670).

7. The memory alloy wire air valve group for an automotive seat according to claim 1, wherein An exhaust passage (421) is formed in the chamber cover plate enclosing the common exhaust chamber (420).

8. The memory alloy wire air valve group for automotive seat according to claim 1, wherein An airway sound-absorbing cotton (221) is provided in each of the airways (220).

9. The memory alloy wire air valve group for an automotive seat according to claim 7, characterized in that, An exhaust passage sound-absorbing cotton (422) is provided in the exhaust passage (421).

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