Waist support one-way pressure maintaining air inlet nozzle

Abstract

The utility model belongs to the technical field of pneumatic waist support air pressure detection, and particularly relates to a waist support one-way pressure maintaining air inlet nozzle. The waist support one-way pressure maintaining air inlet nozzle comprises an air nozzle seat body, an air inlet hole is formed in the top face of the air nozzle seat body, and a hole is formed in the side wall of the air inlet hole so as to be communicated with an air inlet pipe arranged on one side wall; the air outlet hole is formed beside the air inlet hole, a hole is formed in one side wall of the air outlet hole so as to be communicated with an air outlet pipe arranged on the other side wall of the air outlet hole, and a hole is formed in the other side wall of the air outlet hole so as to be communicated with an air pressure sensor containing groove formed in the bottom face; the one-way gasket is arranged at the opening of the air inlet hole in a covering manner, so that the one-way gasket is opened when air flows out of the opening, and the air inlet hole is communicated with the air outlet hole; an upper sealing assembly; and a lower sealing assembly. According to the air inlet nozzle, the air pressure in the air inlet nozzle can be stable during air bag air pressure detection, and the supporting height of the air bag cannot be reduced due to continuous outflow of air.

Description

Technical Field

[0001] This utility model belongs to the field of pneumatic lumbar support air pressure detection technology, specifically relating to a one-way pressure-maintaining air inlet for lumbar support. Background Technology

[0002] In car seats, the support function of pneumatic lumbar support is achieved by inflating and deflating the air bag in the lumbar support. Specifically, after the air pump is started, it outputs gas, which is transferred through the first section of the air pipe and the air valve, and then enters the corresponding air bag through the second section of the air pipe. After that, the air valve is closed to maintain pressure.

[0003] Since the various functions of the pneumatic lumbar support, such as the aforementioned support function, as well as memory and massage functions, are achieved through the inflation and deflation of air bags, the acquisition of air pressure in the pneumatic lumbar support is crucial. Currently, the air pressure is acquired by setting up an air inlet in the air intake section between the air valve and the air pump. This air inlet contains a gas pressure sensor. However, the current air inlet allows air to flow in both directions. When detecting the air bag pressure, the air valve needs to be opened to connect the air bag to the air inlet. This causes the gas in the air bag to flow back to the air pump after entering the air inlet, making the air pressure in the air inlet unstable and unable to be accurately detected. At the same time, the continuous outflow of gas also reduces the support height of the air bag. Utility Model Content

[0004] The purpose of this invention is to provide a one-way pressure-maintaining air inlet for a lumbar support, in order to solve the technical problem that the air inlet used for testing the air pressure of the air bag of a pneumatic lumbar support is bidirectional, causing the gas inside the air bag to continuously flow out when testing the air pressure.

[0005] To solve the above-mentioned technical problems, this utility model provides a one-way pressure-maintaining air inlet for a waist support, comprising: an air inlet body with an air inlet hole on its top surface and an opening on the side wall of the air inlet hole to communicate with an air inlet pipe disposed on one side wall; an air outlet hole located beside the air inlet hole, with an opening on one side wall of the air outlet hole to communicate with an air outlet pipe disposed on the other side wall, and an opening on the other side wall of the air outlet hole to communicate with a pressure sensor receiving groove located on the bottom surface; a one-way gasket covering the opening of the air inlet hole, which is lifted open when gas flows out of the opening to make the air inlet hole and the air outlet hole connected; an upper sealing assembly covering the top surface of the air inlet body; and a lower sealing assembly disposed on the bottom surface of the air inlet body.

[0006] Furthermore, the top surface of the air nozzle seat has a one-way gasket groove, and the opening of the air inlet is located inside the one-way gasket groove, while the opening of the air outlet is located outside the one-way gasket groove; a one-way gasket mounting post is disposed in the one-way gasket groove; the one-way gasket is disposed on the one-way gasket mounting post, covering the opening of the air inlet and fitting against the bottom of the one-way gasket groove.

[0007] Furthermore, the cross-section of the air intake cavity is fan-shaped, and the cross-section of the air intake pipe is circular; the ratio of the cross-sectional area of ​​the air intake cavity to the cross-sectional area of ​​the air intake pipe is 18-22:95-105.

[0008] Furthermore, the ratio of the cross-sectional area of ​​the air intake cavity to the cross-sectional area of ​​the air intake pipe is 21:100.

[0009] Furthermore, the upper sealing assembly includes: an upper cover plate mounting frame, which is disposed on the top surface of the air nozzle seat, and the one-way gasket and the opening of the air outlet are both located within the frame; and an upper sealing gasket, which is disposed within the upper cover plate mounting frame and has an air vent, so that when the upper cover plate is pressed tightly by being fastened to the upper cover plate mounting frame, air vent space is provided above the one-way gasket and above the opening of the air outlet.

[0010] Furthermore, the top surface of the air nozzle seat is provided with an upper sealing gasket limiting post; the upper sealing gasket has a limiting hole adapted to the upper sealing gasket limiting post.

[0011] Furthermore, the lower sealing assembly includes: a mating hole formed on the bottom surface of the nozzle seat and surrounding the pressure sensor receiving groove; a lower sealing gasket disposed on the bottom surface of the nozzle seat and having a receiving through hole adapted to the pressure sensor receiving groove and a mating through hole adapted to the mating hole; the nozzle seat is adapted to mate with a substrate equipped with a pressure sensor through the mating hole to seal the pressure sensor receiving groove.

[0012] The beneficial effect of this utility model is that it aims to solve the technical problem that the air inlet used in current pneumatic waist support airbag pressure testing is bidirectional, causing the air inside the airbag to continuously flow out during pressure testing. This waist support has a one-way pressure-maintaining air inlet with an air inlet hole on the top surface of the air inlet seat, which is connected to the air inlet pipe. An air outlet hole is opened on one side of the air inlet hole, which is connected to the air outlet pipe and the air pressure sensor receiving groove. The top and bottom surfaces of the air inlet seat are sealed by the upper sealing component and the lower sealing component, respectively. The one-way gasket covering the opening of the air inlet hole is only lifted when gas flows out of the air inlet hole, so that the air inlet hole and the air outlet hole are connected. Thus, airflow can be allowed when the air pump inflates the airbag, and the gas flowing out of the airbag can be intercepted in the air pressure sensor receiving groove when the airbag is testing the air pressure. This achieves stable air pressure in the air inlet during airbag pressure testing and prevents the airbag from reducing its support height due to continuous gas outflow. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is an exploded view of the unidirectional pressure-holding air inlet of the lumbar support of this utility model;

[0015] Figure 2 This is a cross-sectional view of the lumbar support unidirectional pressure-holding air inlet nozzle of this utility model when the upper cover is hidden;

[0016] Figure 3 This is a schematic diagram of the unidirectional pressure-holding air inlet of the lumbar support of this utility model;

[0017] Figure 4 This is a cross-sectional view of the lumbar support one-way pressure-holding air inlet of this utility model;

[0018] Figure 5 This is a schematic diagram of the upper sealing gasket of the unidirectional pressure-holding air inlet of the lumbar support of this utility model;

[0019] In the picture:

[0020] Air nozzle seat 100, air inlet 110, air outlet 120, air pressure sensor receiving groove 130, one-way gasket groove 140, one-way gasket mounting post 150, upper sealing gasket limiting post 160.

[0021] 200mm intake manifold

[0022] 300mm exhaust pipe

[0023] 400 unidirectional gasket

[0024] Upper sealing assembly 500, upper cover plate mounting frame 510, upper sealing gasket 520, vent notch 521, limiting hole 522, upper cover plate 530.

[0025] The lower sealing assembly 600 has a mating hole 610, a lower sealing gasket 620, a receiving through hole 621, and a mating through hole 622. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments implemented by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Example

[0028] like Figure 1 As shown, this utility model provides a one-way pressure-holding air inlet for a lumbar support, including: an air inlet seat 100, the top surface of which has an air inlet hole 110, combined with... Figure 4 Furthermore, an opening is made on the side wall of the air intake 110 to communicate with the air intake pipe 200 disposed on one side wall; an air outlet 120 is opened on one side of the air intake 110, and an opening is made on one side wall of the air outlet 120 to communicate with the air outlet pipe 300 disposed on the other side wall, combined with Figure 2 and Figure 3 An opening is made on the other side wall of the vent 120 to communicate with the pressure sensor receiving groove 130 on the bottom surface; a one-way gasket 400 is placed over the opening of the inlet 110, combined with Figure 4 The inlet hole 110 is opened when gas flows out of the hole, so that the outlet hole 120 is connected to the outlet hole 120; the upper sealing assembly 500 is covered on the top surface of the nozzle seat 100; the lower sealing assembly 600 is disposed on the bottom surface of the nozzle seat 100.

[0029] The unidirectional pressure-maintaining air inlet of this waist support has an air inlet hole 110 on the top surface of the air inlet seat 100, which is connected to the air inlet pipe 200. An air outlet hole 120 is opened on one side of the air inlet hole 110, which is connected to the air outlet pipe 300 and the air pressure sensor receiving groove 130. The top and bottom surfaces of the air inlet seat 100 are sealed by the upper sealing component 500 and the lower sealing component 600, respectively. The unidirectional gasket 400 covering the opening of the air inlet hole 110 is only lifted when gas flows out of the air inlet hole 110, so that the air inlet hole 110 and the air outlet hole 120 are connected. This allows airflow to pass through when the air pump inflates the air bag, and also stops the gas flowing out of the air bag in the air pressure sensor receiving groove 130 when the air bag detects the air pressure. This ensures that the air pressure in the air inlet is stable when the air bag is detected and the air bag does not reduce its support height due to continuous gas outflow.

[0030] In at least one embodiment, the unidirectional gasket 400 is disposed over the opening of the air intake 110 as follows. For example... Figure 1 and Figure 4As shown, the top surface of the air nozzle seat 100 has a one-way gasket groove 140, and the opening of the air inlet 110 is located inside the one-way gasket groove 140, while the opening of the air outlet 120 is located outside the one-way gasket groove 140. A one-way gasket mounting post 150 is disposed in the one-way gasket groove 140. The one-way gasket 400 is disposed on the one-way gasket mounting post 150, covering the opening of the air inlet 110 and fitting against the bottom of the one-way gasket groove 140. With the air inlet 110, air outlet 120, and one-way gasket 400 arranged in this way, [reference needed]. Figure 4 When the air pump inflates the air bag, the pumped airflow enters through the inlet pipe 200 and rushes towards the one-way gasket 400 through the inlet hole 110. This allows the gas to be pushed open and continue through the outlet hole 120, outlet pipe 300, and air valve into the air bag. When the air bag pressure is detected, the gas flowing out of the air bag returns to the outlet hole 120 through the air valve and outlet pipe 300. The gas flowing out of the outlet hole 120 enters the cavity above the one-way gasket 400. The cavity above the one-way gasket 400 and the inlet hole 110 create a pressure difference, which only presses the part of the one-way gasket 400 that is in contact with the one-way gasket groove 140 more tightly. The gas flowing out of the air bag can only enter the pressure sensor receiving groove 130. This achieves the goal of allowing airflow to pass through when the air pump inflates the air bag, and stopping the gas flowing out of the air bag in the pressure sensor receiving groove 130 when the air bag is detected.

[0031] refer to Figure 1 and Figure 4 In order to ensure that the airflow from the air inlet 110 to the one-way gasket 400 can push the one-way gasket 400 open, in at least one embodiment, the cross-section of the air inlet 110 is fan-shaped and the cross-section of the air inlet pipe 200 is circular; the ratio of the cross-sectional area of ​​the air inlet 110 to the cross-sectional area of ​​the air inlet pipe 200 can be 18-22:95-105.

[0032] Preferably, the ratio of the cross-sectional area of ​​the air intake 110 to the cross-sectional area of ​​the air intake pipe 200 can be 21:100.

[0033] like Figure 1 As shown, the upper sealing assembly 500 may include: an upper cover mounting frame 510, which is disposed on the top surface of the air nozzle seat 100, and the one-way gasket 400 and the opening of the air outlet 120 are both located within the frame; and an upper sealing gasket 520, which is disposed within the upper cover mounting frame 510, in conjunction with... Figure 5 It also has a ventilation opening 521 so that when the upper cover 530 is pressed together in the upper cover mounting frame 510, it can be combined with Figure 4 Ventilation space is provided above the one-way gasket 400 and above the opening of the vent hole 120.

[0034] like Figure 1 As shown, the top surface of the air nozzle seat 100 is provided with an upper sealing gasket limiting post 160; as Figure 5 As shown, the upper sealing gasket 520 has a limiting hole 522 that matches the upper sealing gasket limiting post 160. (Combined) Figure 1 and Figure 4 The upper sealing gasket 520 can achieve sufficient and long-lasting sealing performance through the cooperation between the limiting hole 522 and the upper sealing gasket limiting post 160, as well as the pressing of the upper cover plate 530.

[0035] In at least one embodiment, the lumbar support's one-way pressure-holding air inlet and the air pressure sensor can be assembled in stages. When assembled in stages, such as Figure 3 As shown, the lower sealing assembly 600 may include: a mating hole 610, which is formed on the bottom surface of the nozzle seat 100 and surrounds the pressure sensor receiving groove 130; a lower sealing gasket 620, which is disposed on the bottom surface of the nozzle seat 100 and has a receiving through hole 621 adapted to the pressure sensor receiving groove 130 and a mating through hole 622 adapted to the mating hole 610; the nozzle seat 100 is adapted to mate with a substrate on which a pressure sensor is provided through the mating hole 610 to seal the pressure sensor receiving groove 130. The substrate may be a circuit board.

[0036] In at least one embodiment, the air pressure sensor can also be directly assembled with the one-way pressure-holding air inlet of the lumbar support. In this case, the air pressure sensor only needs to be placed on another cover plate, and then the cover plate is used to contact the bottom surface of the air inlet seat 100 to press and seal the lower sealing gasket 620.

[0037] In summary, the lumbar support's one-way pressure-maintaining air inlet has an air inlet hole 110 on the top surface of the air inlet seat 100, which is connected to the air inlet pipe 200. An air outlet hole 120 is located beside the air inlet hole 110, which is connected to the air outlet pipe 300 and the air pressure sensor receiving groove 130. The top and bottom surfaces of the air inlet seat 100 are sealed by the upper sealing assembly 500 and the lower sealing assembly 600, respectively, covering the air inlet hole 110. The one-way gasket 400 at the opening of the 0 is only lifted when gas flows out of the air inlet 110, so that the air inlet 110 and the air outlet 120 are connected. This allows airflow to pass through when the air pump inflates the air bag, and also stops the gas flowing out of the air bag in the air pressure sensor receiving groove 130 when the air bag detects the air pressure. This ensures that the air pressure in the air inlet is stable when the air bag detects the air pressure and that the air bag does not reduce its support height due to continuous gas outflow.

[0038] In the embodiments provided in this application, it should be understood that the disclosed systems and devices can be implemented in other ways. The embodiments described above are merely illustrative. For example, the division of the mechanism is only a logical functional division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A one-way pressure-maintaining air inlet for a lumbar support, characterized in that, include: The air nozzle seat (100) has an air inlet hole (110) on its top surface, and the side wall of the air inlet hole (110) has a hole to communicate with the air inlet pipe (200) provided on one side wall. An air outlet (120) is provided on one side of the air inlet (110), and an opening is provided on one side wall of the air outlet (120) to communicate with an air outlet pipe (300) provided on the other side wall. An opening is provided on the other side wall of the air outlet (120) to communicate with a pressure sensor receiving groove (130) provided on the bottom surface. A one-way gasket (400) is provided at the opening of the air inlet (110) so as to be lifted when gas flows out of the opening, so that the air inlet (110) and the air outlet (120) are connected. Upper sealing assembly (500) covers the top surface of the air nozzle seat (100); The lower sealing assembly (600) is disposed on the bottom surface of the air nozzle seat (100).

2. The lumbar support one-way pressure-maintaining air inlet according to claim 1, characterized in that, The top surface of the air nozzle seat (100) has a one-way gasket groove (140), and the opening of the air inlet (110) is located inside the one-way gasket groove (140), while the opening of the air outlet (120) is located outside the one-way gasket groove (140). A one-way gasket mounting post (150) is disposed in the one-way gasket groove (140); The one-way gasket (400) is disposed on the one-way gasket mounting post (150), covering the opening of the air inlet hole (110) and fitting against the bottom of the one-way gasket groove (140).

3. The lumbar support one-way pressure-holding air inlet according to claim 1, characterized in that, The cross-section of the air intake cavity (110) is fan-shaped, and the cross-section of the air intake pipe (200) is circular; The ratio of the cross-sectional area of ​​the air intake cavity (110) to the cross-sectional area of ​​the air intake pipe (200) is 18-22:95-105.

4. The lumbar support one-way pressure-holding air inlet according to claim 3, characterized in that, The ratio of the cross-sectional area of ​​the air intake cavity (110) to the cross-sectional area of ​​the air intake pipe (200) is 21:

100.

5. The lumbar support one-way pressure-maintaining air inlet according to claim 1, characterized in that, The upper sealing assembly (500) includes: The upper cover mounting frame (510) is disposed on the top surface of the air nozzle seat (100), and the openings of the one-way gasket (400) and the air outlet (120) are both located inside the frame; An upper sealing gasket (520) is disposed within the upper cover mounting frame (510) and has a ventilation notch (521) to provide ventilation space above the one-way gasket (400) and above the opening of the vent hole (120) when the upper cover (530) is pressed in the upper cover mounting frame (510).

6. The lumbar support one-way pressure-maintaining air inlet according to claim 5, characterized in that, The top surface of the air nozzle seat (100) is provided with an upper sealing gasket limiting post (160); The upper sealing gasket (520) has a limiting hole (522) that is adapted to the upper sealing gasket limiting post (160).

7. The lumbar support one-way pressure-holding air inlet according to claim 1, characterized in that, The lower sealing assembly (600) includes: A docking hole (610) is provided on the bottom surface of the air nozzle seat (100) and surrounds the air pressure sensor receiving groove (130); The lower sealing gasket (620) is disposed on the bottom surface of the air nozzle seat (100) and has a receiving through hole (621) adapted to the air pressure sensor receiving groove (130) and a docking through hole (622) adapted to the docking hole (610). The nozzle seat (100) is adapted to dock with the substrate equipped with the pressure sensor through the docking hole (610) to seal the pressure sensor receiving groove (130).

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