CN215350496U - Pneumatic massage system of gas circuit control valve chamber structure and vehicle seat - Google Patents
Pneumatic massage system of gas circuit control valve chamber structure and vehicle seat Download PDFInfo
- Publication number
- CN215350496U CN215350496U CN202120109541.3U CN202120109541U CN215350496U CN 215350496 U CN215350496 U CN 215350496U CN 202120109541 U CN202120109541 U CN 202120109541U CN 215350496 U CN215350496 U CN 215350496U
- Authority
- CN
- China
- Prior art keywords
- air
- control valve
- pneumatic
- port
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Massaging Devices (AREA)
Abstract
The application discloses pneumatic massage system of gas circuit control valve room structure and vehicle seat. The method comprises the following steps: the pneumatic port is arranged between the gas circuit control valve body and the gas pipeline, and the air leakage port is arranged at the communication position of the gas circuit control valve body and the external atmosphere; the pneumatic port and the air leakage port are both internally provided with a micro-hole reducing structure. The pneumatic port is used as a gas path structure for communicating the gas path control valve body with a gas path, the air release port is used as a gas path structure for communicating the gas path control valve body with the external atmosphere, and the pneumatic port or the air release port is provided with at least one micro-hole reducing structure to change the diameter of the gas path and inhibit the flow of gas when a pneumatic cavity is inflated, so that the gas path interface is prevented from generating resonance and surge, the noise is effectively reduced, and the silent inflation effect is realized; or the porous air-permeable damping body and the micro-hole reducing structure are used simultaneously, the pipeline aperture of the pneumatic opening and the air leakage opening is changed, the airflow flow of the pneumatic cavity during inflation is inhibited, and the effect of mute inflation is realized.
Description
Technical Field
The present disclosure generally relates to the technical field of pneumatic massage devices, and more particularly to a pneumatic massage system for an air passage control valve chamber structure and a vehicle seat.
Background
The pneumatic massage system of the vehicle seat is composed of an air source body, an air path control valve group, a massage air bag body group and an air path group connected between the control valve group and the massage air bag body. A plurality of massage air bag bodies, namely pneumatic components, which are arranged in an array inside the seat. The seat passenger is subjected to programmed pneumatic extrusion of the bag body, so that the body massage effect is achieved. Each path of massage air bag body (one or more than one) forms a pneumatic route through the air pipeline and the air channel control valve. The plurality of pneumatic routes form a pneumatic massage system of the seat.
The gas circuit control valve group is a two-position three-way valve body (can be an electromagnetic acting valve formed by an electromagnetic coil or an SMA memory alloy body acting valve), and is used for inflating and exhausting the massage air bag body. When the massage air bag body is inflated, high-speed airflow of the air source body enters the valve chamber through the inner cavity of the massage valve body (from the air inlet of the valve body) and is output to the air pipeline and the massage air bag body through the pneumatic port of the valve body, and at the moment, the high-speed airflow easily generates pneumatic resonance and noise in the inner cavity and the pneumatic port of the valve body; and when the massage air bag body is deflated, the air flows in the opposite direction, the air flows back into the valve chamber through the pneumatic port and is exhausted outwards (to the atmosphere) through the deflation port of the control valve, and at the moment, pneumatic resonance and noise can be generated. In the prior art, a felt cushion type cladding and a silencing sheath are usually adopted to cover a shell of the pneumatic control valve group, so that the effects of sealing and isolating noise are achieved.
However, the noise reduction method still has the defects of poor noise reduction effect, large volume and inconvenience for spatial arrangement; therefore, improvements are desired in the existing valve chamber structure.
Disclosure of Invention
In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide an air passage control valve chamber structure and a pneumatic massage system for a vehicle seat, which effectively suppress the airflow rate when a massage air bag body is inflated, avoid resonance and surge of an air passage connecting port, reduce pneumatic noise, and realize a silent inflation effect, and are simple in structure and easy to implement.
In a first aspect, the present application provides a gas path control valve chamber structure, comprising: the pneumatic valve comprises a valve control actuating body, an air inlet, an air path control valve body and a pneumatic cavity communicated with the air path control valve body through an air pipeline; further comprising: the pneumatic valve comprises an air path control valve body, an air pipeline, at least one pneumatic port and an air leakage port, wherein the pneumatic port is arranged between the air path control valve body and the air pipeline; the valve controls the action of the actuating body, so that the air inlet, the pneumatic cavity and the pneumatic port are communicated with each other, the inflation channel is communicated, and the air leakage port is closed at the moment; or the control valve body acts to enable the air leakage port, the pneumatic cavity and the pneumatic port air path to be communicated, the air leakage channel is communicated, and at the moment, the air inlet is closed; the pneumatic port and/or the air leakage port are/is provided with at least one micro-hole reducing structure.
According to the technical scheme provided by the embodiment of the application, the micro-hole reducing structure is a transition through hole structure or an additionally-arranged embedded part structure.
According to the technical scheme that this application embodiment provided, pneumatic mouth perhaps the spacious pipe diameter department of disappointing mouth and the connected trachea internal diameter's sectional area is the pipeline sectional area of micropore reducing structure is 6 at least times.
According to the technical scheme provided by the embodiment of the application, the sectional area of the effective flow passage of the micro-hole reducing structure is less than or equal to 0.3 square millimeter, and the effective length of the effective flow passage is 0.5 millimeter to 3.0 millimeters.
According to the technical scheme provided by the embodiment of the application, the pneumatic port and/or the air leakage port are/is provided with a porous breathable damping body.
According to the technical scheme provided by the embodiment of the application, the end part of the air leakage opening is provided with an overflow diffusion area, and the effective sectional area of the air leakage opening is at least 5 times of the effective sectional area of the micro-hole reducing structure.
According to the technical scheme provided by the embodiment of the application, the tail end of the overflow diffusion area is provided with a silencing body.
In a second aspect, the present application provides a pneumatic massage system for a vehicle seat, comprising: the massage air bag comprises an air source body, a massage air bag body group and an electromagnetic action valve communicated with an air passage of the massage air bag body group; the electromagnetic action valve is the gas circuit control valve chamber structure.
In a third aspect, the present application provides a pneumatic massage system for a vehicle seat, comprising: the air source body, the massage air bag body group and the SMA memory alloy body acting valve are communicated with the air passage of the massage air bag body group; the SMA memory alloy body acting valve is the gas circuit control valve chamber structure.
In summary, the present technical solution specifically discloses a specific structure of a gas circuit control valve body chamber structure. The pneumatic port is used as a gas path structure for communicating the gas path control valve body with a gas path, the air release port is used as a gas path structure for communicating the gas path control valve body with the external atmosphere, and at least one micro-hole reducing structure is designed at the pneumatic port or the air release port to change the pipeline aperture at the pneumatic port or the air release port and inhibit the airflow flow of the pneumatic cavity during inflation, so that resonance and surge at the gas path interface are avoided, the noise is effectively reduced, and the silent inflation effect is realized; or a porous air-permeable damping body is additionally arranged at the pneumatic port and/or the air leakage port and is used together with the micro-hole reducing structure, so that the pipeline apertures at the pneumatic port and the air leakage port are further changed, the airflow flow of the pneumatic cavity during inflation is inhibited, and the effect of mute inflation is realized.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1, 2 and 3 are schematic structural diagrams of a valve chamber structure when an air path control valve body is an SMA memory alloy body acting valve.
Fig. 4, 5 and 6 are schematic structural views of the valve chamber structure when the gas circuit control valve body is an electromagnetic acting valve.
Reference numbers in the figures: 1. a gas circuit control valve body; 2. an air line; 3. a pneumatic cavity; 4. a pneumatic port; 5. an air escape opening; 6. a micro-hole reducing structure; 7. a porous air permeable damping body; 8. a sound deadening body; 9. an overflow diffusion region; 10. valve control of the rotor; 11. an air inlet; 12. and memorizing the alloy wires.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
Please refer to fig. 1, which is a schematic structural diagram of a first embodiment of an air passage control valve chamber structure provided in the present application, including: the pneumatic control valve comprises a valve control actuating body 10, an air inlet 11, an air path control valve body 1 and a pneumatic cavity 3 communicated with the air path control valve body 1 through an air pipeline 2; further comprising: the gas circuit control valve comprises at least one pneumatic port 4 arranged between the gas circuit control valve body 1 and the gas pipeline 2 and a gas leakage port 5 arranged at the communication part of the gas circuit control valve body 1 and the external atmosphere; the valve control actuating body 10 acts to enable the air inlet 11, the pneumatic cavity 3 and the pneumatic port 4 to be communicated in an air path, an inflation channel is communicated, and at the moment, the air leakage port 5 is closed; or the control valve body 10 acts to enable the air leakage port 5, the pneumatic cavity 3 and the pneumatic port 4 to be communicated with each other in an air path, the air leakage channel is communicated, and at the moment, the air inlet 11 is closed; the pneumatic port 4 and/or the air leakage port 5 are/is provided with at least one micro-hole reducing structure 6.
In this embodiment, the pneumatic port 4 is used as a gas path structure for communicating the gas path control valve body 1 with the gas path 2, the gas release port 5 is used as a gas path structure for communicating the gas path control valve body 1 with the external atmosphere, and at least one micro-hole diameter-changing structure 6 is designed at the pneumatic port 4 or the gas release port 5 to change the aperture of the gas path at the pneumatic port 4 or the gas release port 5 and suppress the flow of gas when the pneumatic cavity 3 is inflated, so that resonance and surge at the gas path interface are avoided, noise is effectively reduced, and a silent inflation effect is realized;
wherein, the micro-hole reducing structure 6 can also extend to the outside of the pneumatic port 4 or the air leakage port 5;
the micro-hole diameter-changing structure 6 is a transition through hole structure, in particular a transition through hole structure between a micro-hole and a hollow hole; or the micro-hole reducing structure 6 is an additionally-arranged embedded part structure, namely, additionally-arranged reducing parts form the micro-hole reducing structure 6, and the material of the micro-hole reducing structure can be a metal reducing pipeline or a nonmetal reducing pipeline.
The micro-hole reducing structure 6 is a local thinning structure in the extending direction of the gas path, and is beneficial to realizing the processing of a process structure, wherein the sectional area of an effective flow passage is less than or equal to 0.3 square millimeter, and the length of a pipeline ranges from 0.5 millimeter to 3.0 millimeter;
the cross-sectional area of the pipeline of the micro-hole reducing structure 6 is not less than 1:6 relative to the cross-sectional area of the air-moving opening 4 or the air-release opening 5 and the inner diameter of the connected air pipe, namely, the cross-sectional area of the air-moving opening 4 or the air-release opening 5 and the inner diameter of the connected air pipe is 6 times larger than the cross-sectional area of the pipeline of the micro-hole reducing structure 6.
In any preferred embodiment, said pneumatic port 4 and/or said air escape port 5 are provided with a porous air-permeable damping body 7.
In this embodiment, the porous air-permeable damping body 7 is disposed at the pneumatic port 4 and/or the air leakage port 5, and the porous air-permeable damping body 7 and the micro-hole diameter-changing structure 6 are used simultaneously, so as to further achieve the noise reduction effect;
wherein the porous, air-permeable damping body 7 is of the type, optionally, for example, a sponge block, a bundle of porous capillaries or a porous sintered body; the porous sintered body may be made of a metal material or a non-metal material.
The pneumatic opening or the air release opening can be only provided with the multi-hole air-permeable damping body 7, the total effective air-permeable area of the multi-hole air-permeable damping body 7 is not less than 1:6 of the open pipe diameter of the pneumatic opening 4 or the air release opening 5 and the sectional area of the inner diameter of the connected air pipe, and the multi-hole air-permeable damping body 7 replaces the micro-hole reducing structure 6 under the condition, so that the same noise reduction effect is achieved.
In any preferred embodiment, the end of the bleed orifice 5 is provided with an overflow diffusion zone 9.
In this embodiment, the overflow diffusion area 9 is disposed at the end of the air release opening 5, and is used for making the gas flowing out of the air release opening 5 flow into the sound-deadening body 8 in a relatively low pressure state, and then diffusing the gas into the external atmosphere;
and the effective sectional area of the overflow diffusion zone 9 is at least 5 times of the effective sectional area of the micro-hole reducing structure 6.
In any preferred embodiment, the end of the overflow diffusing zone 9 is provided with a sound deadening body 8.
In this embodiment, the silencer 8 is disposed at the end of the overflow diffusion region 9 to further avoid resonance and surge at the gas path interface, so as to ensure a good silent inflation effect;
here, the type of the noise damper 8 may be a sponge, an air-permeable felt, a porous air-permeable rubber body, or the like; further, when the overflow diffusing area 9 is not provided, the muffler body 8 may be provided in the air release opening 5.
Wherein, the valve control valve body 10 is a movable structure in the valve body, such as the valve core structure in fig. 4, 5 and 6, and the pneumatic sealing body in fig. 1, 2 and 3;
when the gas circuit control valve body 1 is an SMA memory alloy body acting valve,
as shown in fig. 1, a first path of the three-path air guide module of the SMA memory alloy actuated valve is provided with an air inlet, a second path thereof is provided with a first air nozzle and a second air nozzle, and a third path thereof is provided with an air outlet, wherein the first air nozzle and the second air nozzle are equivalent to the pneumatic port 4, and the air outlet is equivalent to the air outlet 5;
embedding the micropore reducing structure 6 into a first air nozzle and a second air nozzle of a second passage of the SMA memory alloy body acting valve, and embedding the porous air-permeable damper 7 into an air leakage port of a third passage of the SMA memory alloy body acting valve; when the pneumatic cavity 3 is inflated, the pneumatic sealing body in the valve chamber opens the air path of the pneumatic port (at the moment, the exhaust port is closed), the airflow from the air source enters the valve chamber through the air inlet, the airflow passes through the pneumatic port of the SMA memory alloy actuating valve and the micro-hole reducing structure 6 to be output out of the valve chamber, and the airflow is inflated to the pneumatic cavity 3 through the pipeline, so that silent inflation is realized;
as shown in fig. 2, based on the actuation valve of fig. 1, the second passage of the SMA memory alloy actuation valve is provided with an air outlet nozzle corresponding to the pneumatic port 4;
embedding the micro-hole reducing structure 6 into an air outlet nozzle of an SMA memory alloy body acting valve, when the pneumatic cavity 3 is inflated, a memory alloy wire 12 in the valve chamber acts to pull a sealing colloid, so that an air leakage opening is closed, airflow from an air source body enters the valve chamber through an air inlet, and the airflow passes through a pneumatic opening of the SMA memory alloy body acting valve and an output valve chamber of the micro-hole reducing structure 6 and is inflated to the pneumatic cavity 3 through a pipeline, so that silent inflation is realized;
as shown in fig. 3, based on the actuation valve of fig. 2, the actuation valve of SMA memory alloy body controls the opening and closing of the air inlet and the air outlet by using the bidirectional elastic sealing body,
when the pneumatic cavity 3 is inflated, the memory alloy wire 12 in the valve chamber acts to pull the bidirectional elastic sealing body, so that the air leakage port is closed, the airflow from the air source enters the valve chamber through the air inlet, the airflow passes through the pneumatic port of the SMA memory alloy actuating valve and the micro-hole reducing structure 6 to be output out of the valve chamber, and the air is inflated to the pneumatic cavity 3 through the pipeline, so that silent inflation is realized;
when the air is exhausted to the outside atmosphere, the air from the pneumatic cavity 3 is exhausted to the control valve through the air pipe, enters the valve chamber through the pneumatic port, is output out of the valve chamber through the micro-hole reducing structure 6 and the air leakage port, and is exhausted to the atmosphere space outside the valve chamber, so that silent exhaust is realized;
in the same way, the method for preparing the composite material,
when the gas circuit control valve body 1 is an electromagnetic action valve, the pneumatic port of the electromagnetic action valve is connected with an air tap, and at the moment, the micro-hole reducing structure 6 or the porous air-permeable damping body 7 is embedded into the air tap, so that the noise reduction effect can be realized;
as shown in fig. 4, the micro-hole diameter-changing structure 6 is respectively embedded into the air tap and the air leakage port of the electromagnetic action valve;
as shown in fig. 5, the micro-hole diameter-changing structure 6 is embedded into the air tap of the electromagnetic action valve, and then the micro-hole diameter-changing structure 6 in the air tap and the valve body form an integrated structure;
as shown in fig. 6, the porous air-permeable damping body 7 is inserted into the air nozzle and the air release opening of the solenoid actuated valve, respectively.
The valve chamber structure is suitable for pneumatic massage, pneumatic waist support, pneumatic seat posture adjustment and pneumatic seat hardness adjustment in the field of vehicle seats.
In the above examples, the pneumatic port and the air release port are both provided with the micro-hole diameter-changing structures 6, and the micro-hole diameter-changing structures 6 may also be separately provided at the pneumatic port or the air release port.
Example two
A pneumatic massage system for a vehicle seat, comprising: the massage air bag comprises an air source body, a massage air bag body group and an electromagnetic action valve communicated with an air passage of the massage air bag body group; the electromagnetic action valve is a gas circuit control valve chamber structure in the above embodiment.
In the embodiment, the electromagnetic actuating valve adopts a gas path control valve chamber structure, and the pneumatic massage system utilizes the massage air bag body group to be communicated with the gas path of the gas path control valve chamber structure; specifically, a pneumatic port 4 of the air passage control valve chamber structure is communicated with the massage air bag group through an air passage 2, and an air inlet 11 is communicated with an air source air passage; and the gas circuit control valve chamber structure and the massage air bag group can be directly communicated or communicated through a pipeline.
EXAMPLE III
A pneumatic massage system for a vehicle seat, comprising: the air source body, the massage air bag body group and the SMA memory alloy body acting valve are communicated with the air passage of the massage air bag body group; the SMA memory alloy body acting valve is an air passage control valve chamber structure in the embodiment.
In the embodiment, the SMA memory alloy body actuating valve adopts an air passage control valve chamber structure, and the pneumatic massage system utilizes the massage air bag body group to be communicated with an air passage of the air passage control valve chamber structure; specifically, a pneumatic port 4 of the air passage control valve chamber structure is communicated with the massage air bag group through an air passage 2, and an air inlet 11 is communicated with an air source air passage; and the gas circuit control valve chamber structure and the massage air bag group can be directly communicated or communicated through a pipeline.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (9)
1. An air passage control valve chamber structure comprising: the gas path control valve comprises a valve control valve body (10), a gas inlet (11), a gas path control valve body (1) and a pneumatic cavity (3) communicated with the gas path control valve body (1) through a gas pipeline (2); it is characterized by also comprising: the pneumatic valve comprises at least one pneumatic port (4) arranged between the gas path control valve body (1) and the gas pipeline (2) and a gas leakage port (5) arranged at the communication part of the gas path control valve body (1) and the outside atmosphere; the valve control actuating body (10) acts to enable the air inlet (11), the pneumatic cavity (3) and the pneumatic port (4) to be communicated with an air passage, an inflation channel is communicated, and at the moment, the air leakage port (5) is closed; or the control valve body (10) acts to enable the air leakage port (5), the pneumatic cavity (3) and the pneumatic port (4) to be communicated with the air path, the air leakage channel is communicated, and at the moment, the air inlet (11) is closed; the pneumatic port (4) and/or the air leakage port (5) are/is provided with at least one micro-hole reducing structure (6).
2. The gas path control valve chamber structure according to claim 1, wherein the micro-hole diameter-changing structure (6) is a transition through hole structure or an additional insert structure.
3. The air passage control valve chamber structure according to claim 1, wherein the cross-sectional area of the air port (4) or the air release port (5) at the open pipe diameter and the inner diameter of the connected air pipe is at least 6 times of the pipe cross-sectional area of the micro-hole reducing structure (6).
4. The air passage control valve chamber structure according to claim 1, wherein the effective flow passage of the micro-hole diameter-changing structure (6) has a cross-sectional area less than or equal to 0.3 mm, and an effective length of 0.5 mm to 3.0 mm.
5. An air passage control valve chamber structure according to claim 1, characterized in that said air port (4) and/or said air release port (5) is provided with a porous air-permeable damper body (7).
6. An air passage control valve chamber structure according to claim 1, characterized in that the end of the air release opening (5) is provided with an overflow diffusion area (9) and the effective cross-sectional area thereof is at least 5 times of the effective cross-sectional area of the micro-hole reducing structure (6).
7. A gas path control valve chamber structure according to claim 6, characterized in that the end of the overflow diffusing area (9) is provided with a sound deadening body (8).
8. A pneumatic massage system for a vehicle seat, comprising: the massage air bag comprises an air source body, a massage air bag body group and an electromagnetic action valve communicated with an air passage of the massage air bag body group; the electromagnetic action valve is a gas circuit control valve chamber structure as claimed in any one of claims 1 to 7.
9. A pneumatic massage system for a vehicle seat, comprising: the air source body, the massage air bag body group and the SMA memory alloy body acting valve are communicated with the air passage of the massage air bag body group; the SMA memory alloy body actuating valve is an air passage control valve chamber structure as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120109541.3U CN215350496U (en) | 2021-01-15 | 2021-01-15 | Pneumatic massage system of gas circuit control valve chamber structure and vehicle seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120109541.3U CN215350496U (en) | 2021-01-15 | 2021-01-15 | Pneumatic massage system of gas circuit control valve chamber structure and vehicle seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215350496U true CN215350496U (en) | 2021-12-31 |
Family
ID=79621182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120109541.3U Active CN215350496U (en) | 2021-01-15 | 2021-01-15 | Pneumatic massage system of gas circuit control valve chamber structure and vehicle seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215350496U (en) |
-
2021
- 2021-01-15 CN CN202120109541.3U patent/CN215350496U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20070120401A1 (en) | Series of components for a vehicle seat | |
| CN215350496U (en) | Pneumatic massage system of gas circuit control valve chamber structure and vehicle seat | |
| CN109723926A (en) | A kind of combined type Gas Exhausting Muffle | |
| WO2021135527A1 (en) | Softness/stiffness adjusting apparatus for use in vehicle seat, vehicle seat, and vehicle | |
| CN107476913A (en) | A kind of engine relief valve air exhaust muffler device | |
| CN111284378A (en) | Waist support control system integrating control part and air pump | |
| CN104999893B (en) | A kind of in-car air-pressure balancing device with silencing function | |
| CN214248405U (en) | Combined type solenoid valve group with concentrated gas leakage structure | |
| CN211737261U (en) | Vehicle exhaust silencer and vehicle | |
| WO2016082111A1 (en) | Noise reduction structure of supercharger | |
| CN214295699U (en) | Pneumatic massage utricule, pneumatic massage system and car seat | |
| CN112066039A (en) | Pneumatic control valve device, pneumatic control valve group and pneumatic control assembly | |
| WO2020088547A1 (en) | Active noise reduction distribution box, air conditioner pipeline system, and air conditioner | |
| CN217683396U (en) | Mute electromagnetic valve and air bag equipment | |
| CN111671277A (en) | Air bag type mute intelligent pillow | |
| CN214305457U (en) | Pressure equalizing valve and oxygen generator applying same | |
| CN113910999B (en) | Integrated valve pump assembly device and pneumatic adjusting system for automobile seat | |
| CN218408724U (en) | Solenoid valve subassembly and medical instrument | |
| CN219013456U (en) | Novel electromagnetic valve with improved air valve air release structure | |
| CN217793756U (en) | Massage armchair gasbag structure of making an uproar that falls | |
| CN220384715U (en) | Controller and bed using same | |
| CN212307448U (en) | Air bag type mute intelligent pillow | |
| CN116439972A (en) | Air bag noise reduction structure of massage chair | |
| CN218038568U (en) | Noise reduction system for pillow and liftable pillow | |
| CN219969482U (en) | Pneumatic control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |