An integrated pump valve assembly and a pneumatic adjustment system for a car seat

Abstract

The present application provides an integrated pump-valve assembly and a pneumatic adjustment system for automobile seats, wherein the integrated pump-valve assembly includes a pump body and at least one valve assembly, an air path silencer connection portion is provided between the pump body and the valve assembly; the air path silencer connection portion includes a labyrinth silencer cavity; at least one air inlet and at least one air outlet are provided on the labyrinth silencer cavity; a grille folded air path is provided between the air inlet and the air outlet; the air inlet is docked with the output air port of the pump body; the air outlet is docked with the air inlet port of the valve assembly. According to the technical solution provided in the embodiment of the present application, by providing a silencer cavity between the pump body and the valve assembly, the output airflow of the pump body is decelerated by distributed air resistance by utilizing the grille folded air path on the silencer cavity, thereby realizing the function of reducing noise. Compared with the prior art, it is more suitable for pneumatic massage, pneumatic lumbar support, pneumatic seat posture adjustment, and pneumatic seat hardness adjustment in the field of vehicle seats.

Description

Technical Field

[0001] The present application relates to the technical field of automobile seats, and in particular to an integrated pump-valve assembly and a pneumatic adjustment system for automobile seats. Background Art

[0002] Pneumatic solenoid valves usually use a motor to drive a miniature piston air pump that cyclically actuates multiple rubber valve chambers. When the motor is actuated, each rotation of the motor will drive each rubber valve chamber to squeeze out air in turn. The output airflow is output in the form of surge pulsation in the pipeline. At this time, the airflow output by the air pump often causes surge noise in the output pipeline due to the influence of intermittent airflow surges. The surge airflow, through the pneumatic control valve group connected to the pump body, is prone to resonate in the internal flow channel cavity of the pneumatic control valve group, further aggravating the impact of pneumatic noise and surge.

[0003] Due to the compact space structure inside the vehicle seats, the air pump, air circuit controller and other components cannot be arranged at a distance, which in turn increases the noise interference to the seat occupants. Due to the relatively small space inside the car, especially the increasing number of quieter vehicles such as pure electric vehicles, the occupants are also more sensitive to noise. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide an integrated pump-valve assembly and a pneumatic adjustment system for a car seat.

[0005] In the first aspect, the present application provides an integrated pump-valve assembly, comprising a pump body and at least one valve group, characterized in that: an air path silencer connection portion is provided between the pump body and the valve group; the air path silencer connection portion comprises a labyrinth silencer cavity and at least one air inlet and at least one air outlet; a grille folded air path is provided in the labyrinth silencer cavity; the air inlet is connected to the air outlet air path via the grille folded air path; the air inlet is connected to the output air port of the pump body; and the air outlet is connected to the air inlet port of the valve group.

[0006] Furthermore, a plurality of partition walls with equal or unequal spacing are installed in the labyrinth-type silencing cavity, and the partition walls and the inner wall of the cavity form a grid-shaped folded air path.

[0007] Furthermore, at least one blind air cavity for accommodating air flow is provided in the folded air path of the grid extending along the gas flow direction.

[0008] Furthermore, a blocking low wall is arranged between the partition walls, and the height of the blocking low wall is lower than the partition wall.

[0009] Furthermore, a breathable damping body is installed in the folded air path of the grille.

[0010] Furthermore, the air path silencer connection part also includes an air distribution layer structure; the air distribution layer structure is arranged between the labyrinth silencer cavity and the valve group part; and the air outlet is arranged on the air distribution layer.

[0011] Furthermore, a microporous overflow channel is provided on the gas distribution layer; one end of the microporous overflow channel is connected to the gas distribution layer structure and the interior of the pump body, and the other end is connected to the external atmosphere; the total overflow cross-sectional area of ​​the microporous overflow channel is compared with the cross-sectional area of ​​the exhaust port of the pump body, and the overflow ratio is less than 5%.

[0012] Furthermore, a cover body is arranged on the upper part of the pump body; the cover body includes a top cover, a rubber air cushion, a silencer and a bottom cover; the labyrinth silencer cavity is arranged on the top cover. The silencer and the rubber air cushion are arranged between the top cover and the bottom cover; and the top cover is provided with corresponding vent holes corresponding to the air inlet.

[0013] Furthermore, the valve group part is a solenoid valve or a memory alloy wire control valve.

[0014] In a second aspect, a pneumatic adjustment system for a vehicle seat including an integrated pump-valve assembly includes at least one airbag and a connecting pipeline.

[0015] The advantages and positive effects of this application are:

[0016] This technical solution achieves the function of reducing noise by setting a silencer cavity between the pump body and the valve group, using the grille on the silencer cavity to bend the air path, and decelerating the output airflow of the pump body by distributed air resistance. Compared with the existing technology, it is more suitable for pneumatic massage, pneumatic lumbar support, pneumatic seat posture adjustment, and pneumatic seat hardness adjustment in the field of vehicle seats. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A partial structural schematic diagram of an integrated pump-valve assembly provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of the structure of a labyrinth-type silencing cavity of an integrated pump-valve assembly provided in an embodiment of the present application;

[0019] Figure 3 A schematic diagram of the structure of a labyrinth-type silencing cavity provided with blind cavitation of an integrated pump-valve assembly provided in an embodiment of the present application;

[0020] Figure 4 A partial structural schematic diagram of an integrated pump-valve assembly provided in an embodiment of the present application;

[0021] Figure 5 A schematic diagram of the structure of the gas path silencer connection portion of the integrated pump-valve assembly provided in an embodiment of the present application;

[0022] Figure 6A schematic diagram of the structure of the gas path silencer connection portion of the integrated pump-valve assembly provided in an embodiment of the present application;

[0023] Figure 7 A structural schematic diagram of an assembly diagram of an integrated pump-valve assembly provided in an embodiment of the present application;

[0024] Figure 8 A structural schematic diagram of an assembly diagram of an integrated pump-valve assembly provided in an embodiment of the present application;

[0025] Fig. 9 This is a schematic diagram of the partially enlarged structure of position A of the assembly diagram of the integrated pump-valve assembly provided in an embodiment of the present application.

[0026] The text markings in the figure are as follows: 100-air path silencer connection; 110-labyrinth silencer cavity; 111-air inlet; 112-air outlet; 113-grating folded air path; 114-blind air cavity; 115-partition wall; 116-blocking low wall; 117-damping body; 120-rubber air distribution cushion; 130-silencer cotton; 140-top cover; 141-vent; 200-pump body; 210-bottom cover; 220-air distribution layer structure; 230-micro-gap overflow channel; 300-valve group part. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is described in detail below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present application.

[0028] First, please refer to Figure 1-9 The present embodiment provides an integrated pump-valve assembly, including a pump body 200, a valve group part 300 and an air path silencer connection part 100; the air path silencer connection part 100 is located between the pump body 200 and the valve group part 300, and includes a labyrinth silencer cavity 110 for silencing and reducing noise; the labyrinth silencer cavity 110 is provided with at least one air inlet 111 and at least one air outlet 112; the air outlet 112 is connected to the valve group part 300, and the number of the air outlets 112 corresponds to the number of the valve group part 300; the air inlet 111 is connected to the air outlet of the air pump on the pump body 200, and the number of the air inlet 111 corresponds to the number of the air pump outlets.

[0029] In a preferred embodiment, a grid folded air path 113 is provided between the air inlet 111 and the air outlet 112 ; at least one blind air cavity 114 for accommodating air flow is provided in the grid folded air path 113 along the gas flow direction.

[0030] In a preferred embodiment, the grid folded air path 113 is composed of a plurality of partition walls 115 with equal or unequal spacing.

[0031] Working principle: Since a number of equidistant or unequally spaced partition walls 115 are installed in the labyrinth-type silencer cavity 110 of the air path silencer connection part 100, a grid-shaped folded air path 113 is formed between the partition wall 115 and the inner wall of the air path silencer connection part 100; at least one air inlet 111 and at least one air outlet 112 are arranged in the labyrinth-type silencer cavity 110, and the air inlet 111 and the air outlet 112 are located at both ends of the labyrinth-type silencer cavity 110; the air path silencer connection part 100 is integrated into the micro pump valve assembly, and the air inlet 111 is connected to the pump body. The air output port 200 is docked and the air path is connected, and the air outlet 112 is docked with the air inlet port of the valve group part 300 of the pump-valve assembly and the air path is connected, so that the airflow discharged from the air pump enters the grille folded air path 113 through the air inlet 111, and the airflow continuously turns along the grille folded air path 113 in the labyrinth silencer cavity 110. These turned airflows rub and collide with the partition wall 3 to gradually reduce the flow rate of the airflow, and this cycle is repeated, and finally a smooth airflow flows out through the air outlet 112 and then enters the valve group part 300, and the pneumatic noise is greatly reduced.

[0032] In a preferred embodiment, a low blocking wall 116 may be provided between the partition walls 115 . The height of the low blocking wall 116 is lower than that of the partition walls 115 , which can further improve the noise reduction effect.

[0033] Specifically, by arranging the blocking low wall 116 between the partition walls 115, the cross-sectional area of ​​the grid folded air path 113 can be reduced, the air path resistance of the airflow can be further increased, and the airflow pulsation and surge can be reduced.

[0034] In a preferred embodiment, the partition wall 115 may also be provided with slots for enhancing the noise reduction effect.

[0035] Specifically, the slots may be comb-shaped pores, distributed holes, etc. By arranging the slots on the partition wall 3, the flow path of the airflow in the grille folded air path 113 can be increased, which is beneficial to reducing the airflow velocity and improving the sound-absorbing effect.

[0036] In a preferred embodiment, a breathable damping body 117 may be installed in the grille folding air path 113, which may also improve the noise reduction effect.

[0037] Specifically, the air-permeable damping body 117 can be made of an air-permeable sponge block, a porous felt pad, a sieve-shaped plastic body, etc.

[0038] In a preferred embodiment, the pump body 200 includes a cover body connected to the labyrinth silencer cavity 110; the cover body includes a top cover 140, a rubber air pad 120, silencer cotton 130 and a bottom cover 210; the labyrinth silencer cavity 110 is arranged on the top cover 140; the silencer cotton 130 and the rubber air pad 120 are arranged between the top cover 140 and the bottom cover 210; the top cover 140 is provided with corresponding air vents 141 corresponding to the air inlet 110.

[0039] Please refer to further Figure 2 and Figure 3 In a preferred embodiment, the air path silencer connection part 100 includes a labyrinth silencer cavity 110, an air inlet 111, and an air outlet 112; the labyrinth silencer cavity 110 is in an open state in the direction toward the top cover 140, and is in a closed state in the direction away from the top cover 140; the starting position of the grille bending air path 113 forms the air inlet 111, and a through hole is opened on the closed surface of the labyrinth silencer cavity 110 away from the top cover 140 to form the air outlet 112. The labyrinth silencer cavity 110 is fixedly mounted on the top cover 140 by welding, gluing, or clamping. A vent hole 141 is provided on the top cover, and the vent hole 141 corresponds to the position of the air inlet 111 of the labyrinth silencer cavity 110, and the air path is connected. The gas generated by the pump body 200 enters the labyrinth silencer cavity 110 through the vent hole 141 and the air inlet 111 of the top cover 140, passes through the grille folded air path 113, and the airflow is smooth, and then enters the valve group part 300 through the air outlet 112, reducing the noise generated by the airflow.

[0040] The number of air inlets 111 and air outlets 112 is not limited to Figure 2 and Figure 3 The limit can be set to more than one.

[0041] Please refer to further Figure 4-6In a preferred embodiment, the air path silencer connection part 100 includes a labyrinth silencer cavity 110, an air inlet 111, an air outlet 112, and an air distribution layer structure 220, and the air distribution layer structure 220 is arranged between the labyrinth silencer cavity 110 and the valve group part 300; the labyrinth silencer cavity 110 is in a closed state in the direction adjacent to the top cover 140, and the labyrinth silencer cavity 110 is in an open state in the direction away from the top cover 140 and adjacent to the air distribution layer structure 220; the labyrinth silencer cavity 110 is installed and fixed with the air distribution layer structure 220 by welding, gluing or clamping. A through hole is provided on the closed surface of the labyrinth silencer cavity 110 adjacent to the top cover 140 to form an air inlet 111; a through hole is provided on the air distribution layer structure 220 to form an air outlet 112, and the position of the air outlet 112 is on the grille folded air path 113 and away from the air inlet 111; a vent hole 141 is provided on the top cover, and the vent hole 141 corresponds to the position of the air inlet 111 of the labyrinth silencer cavity 110, and the air paths are connected. The gas generated by the pump body 200 enters the labyrinth silencer cavity 110 through the vent hole 141 and the air inlet 111 of the top cover 140, passes through the grille folded air path 113, and the air flow is stable, and then enters the valve group part 300 through the air outlet 112 of the air distribution layer structure 220, thereby reducing the noise generated by the air flow.

[0042] Please refer to further Figure 8 and Fig. 9 In a preferred embodiment, a microporous overflow channel 230 is provided on the air distribution layer structure 220, one end of the microporous overflow channel 230 is connected with the air distribution layer structure 220, enters the labyrinth silencer cavity 110, and is connected to the inside of the pump body 200, and the other end is connected to the external atmosphere. Compared with the cross-sectional area of ​​the total overflow cross-sectional area of ​​the microporous overflow channel 230 and the cross-sectional area of ​​the air outlet of the pump body 200, the overflow ratio is less than 5%.

[0043] The gas path from the gas distribution layer structure 220 to the front end of the gas inlet of the valve group part 300 is connected, and at least one microporous overflow channel 230 can be opened at any position of the gas distribution layer structure 220 on this part of the entire gas path; when the gas pressure is very high, under the influence of the pressure, the gas velocity through the microporous overflow channel 230 increases, the overflowing gas increases, and the pressure at the gas distribution layer structure 220 and the gas inlet end of the valve group part 300 is adjusted to be stable within a certain range; on the contrary, when the gas pressure is relatively low, the gas velocity through the microporous overflow channel 5 decreases, the overflowing gas volume decreases, and the pressure at the gas distribution layer structure 220 and the gas inlet end of the valve group part 300 is adjusted to be stable within a certain range; the pump body 200 continuously generates gas, which is affected by the microporous overflow channel 230. 0 area, the overflowed gas is limited, the overflowed gas is smaller than the gas generated by the pump body 200, and will not affect the functional actuation of each pneumatic circuit; when actuated, the trickle flowing out of the micropore overflow channel 230 will overflow through the gaps at the gas outlets of each gas path valve group in the valve group part 300, and flow out of the internal space of the valve group part 300 through the gaps on the shell of the valve group part; at this time, the outflowing airflow will also take away the heat generated by the actuation of the valve group part 300, and the discharged hot airflow will flow into the atmosphere inside the vehicle; by controlling the gap size of the micropore overflow channel 230, it will not significantly affect the air supply of the pump body 200 to the valve group part 300, and the overflow amount of the micropore overflow channel 230 is not more than 5% of the air delivery amount of the valve group part 300; in a preferred embodiment, the valve group part 300 can be a solenoid valve or a memory alloy wire control valve.

[0044] Please refer to further Figure 4 In a preferred embodiment, the valve assembly part 300 is a two-position three-way valve body. In this case, the valve body part is externally connected to the airbag body, and this valve body allows the airbag body to only be inflated and deflated.

[0045] Please refer to further Figure 7 In a preferred embodiment, the valve assembly part 300 is a two-position two-way valve and a two-position three-way valve connected in series. The valve assembly part is externally connected to an airbag body so that the airbag body can achieve the function of inflation, deflation and pressure maintenance.

[0046] In a preferred embodiment, the valve assembly 300 is composed of a one-way check valve and a two-position three-way solenoid valve. In this case, the external airbag can also be used to inflate, deflate and maintain pressure. Figure 1 As shown, a one-way check valve is provided between the labyrinth-type silencing cavity 110 and the valve assembly part 300 .

[0047] In the second aspect, this embodiment provides a pneumatic adjustment system for automobile seats including an integrated pump-valve assembly, including at least one airbag and a connecting pipeline. The integrated pump-valve assembly provides gas to the airbag through the connecting pipeline. The pneumatic adjustment system can be a pneumatic lumbar support system, a wing support system, a massage system, a leg support system, or a pneumatic seat hardness adjustment system. This pneumatic adjustment system can also be used in furniture seat products.

[0048] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can also make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. An integrated pump-valve assembly, comprising a pump body (200) and at least one valve assembly (300), characterized in that: An air path silencer connection portion (100) is provided between the pump body portion (200) and the valve assembly portion (300); the air path silencer connection portion (100) comprises a labyrinth silencer cavity (110) and at least one air inlet (111) and at least one air outlet (112); a grille folded air path (113) is provided in the labyrinth silencer cavity (110); the air inlet (111) is in air path communication with the air outlet (112) via the grille folded air path (113); the air inlet (111) is butt-jointed with the air output port of the pump body portion (200); and the air outlet (112) is butt-jointed with the air inlet port of the valve assembly portion (300); A plurality of equidistant or unequally spaced partition walls (115) are installed in the labyrinth-type silencer cavity (110); the partition walls (115) and the inner wall of the labyrinth-type silencer cavity (110) form the grille folded air path (113); and by arranging a low barrier wall (116) between the partition walls (115), the cross-sectional area of ​​the grille folded air path (113) can be reduced, the air path resistance of the airflow can be increased, and the airflow pulsation and surge can be reduced; The gas path silencer connection part (100) further comprises an air distribution layer structure (220); the air distribution layer structure (220) is arranged between the labyrinth silencer cavity (110) and the valve assembly part (300); the air outlet (112) is arranged on the air distribution layer structure (220); The gas distribution layer structure (220) is provided with a microporous overflow channel (230); one end of the microporous overflow channel (230) is in communication with the gas distribution layer structure (220) and the interior of the pump body (200), and one end is in communication with the external atmosphere; when the total overflow cross-sectional area of ​​the microporous overflow channel (230) is compared with the cross-sectional area of ​​the exhaust port of the pump body (200), the overflow ratio is less than 5%.

2. The integrated pump-valve assembly according to claim 1, characterized in that: At least one blind air cavity (114) for accommodating air flow is provided in the grid folded air path (113) along the gas flow direction.

3. The integrated pump-valve assembly according to claim 1, characterized in that: An air-permeable damping body (117) is installed in the grille folding air path (113).

4. The integrated pump-valve assembly according to claim 1, characterized in that: A cover body is arranged on the upper part of the pump body (200); the cover body comprises a top cover (140), a rubber air cushion (120), a sound-absorbing cotton (130) and a bottom cover (210); the labyrinth-type sound-absorbing cavity (110) is arranged on the top cover (140); the sound-absorbing cotton (130) and the rubber air cushion (120) are arranged between the top cover (140) and the bottom cover (210); and the top cover (140) is provided with a corresponding air vent (141) corresponding to the air inlet (110).

5. The integrated pump-valve assembly according to claim 1, characterized in that: The valve group part (300) is a solenoid valve or a memory alloy wire control valve.

6. A pneumatic adjustment system for a car seat comprising the integrated pump-valve assembly according to any one of claims 1 to 5, characterized in that: It includes at least one air bag body and a connecting pipeline.

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