Electromagnetic valve and double-valve structure for automobile seat air bag waist support

Abstract

The utility model discloses an electromagnetic valve for an automobile seat air bag waist support, and relates to the technical field of automobile seat air bag waist supports, one end of a valve body is provided with an air source interface, and the other end of the valve body is provided with an air bag interface and an air outlet; a cavity is formed in the valve body, an iron core is fixed to the position, close to the air source connector, in the cavity, an iron column is movably arranged in the cavity, a first channel penetrates through the iron core, a second channel is formed between the iron column and the inner wall of the cavity, one end of the first channel can be communicated with the air source connector through a one-way valve, and the other end of the first channel can be communicated with the second channel. The second channel can communicate with the air bag connector and the air outlet, and an iron core spring is arranged between the iron column and the iron core. A solenoid is arranged at the position, close to the cavity, of the valve body. The utility model further discloses a double-valve structure for the automobile seat air bag waist support, the double-valve structure comprises a controller and two electromagnetic valves for the automobile seat air bag waist support, and the two electromagnetic valves for the automobile seat air bag waist support are both electrically connected with the controller.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seat air bag lumbar support, in particular to a solenoid valve and a double valve structure for an automobile seat air bag lumbar support. Background Art

[0002] Cars are an indispensable means of transportation for people to travel. In order to reduce fatigue caused by long-term car riding, lumbar supports are often installed on car seats.

[0003] At present, the lumbar support installed on car seats on the market is mainly an air bag lumbar support. Users can adjust the shape of the air bag lumbar support by inflating and deflating the air bag so that the car seat back fits their own waist and back, playing a supporting role, thereby improving the comfort of the car seat.

[0004] However, the inflation valve and deflation valve of the existing air bag waist support are usually separately arranged, and the structure is relatively complicated. In addition, when the user adjusts the shape of the air bag waist support, it is necessary to operate the inflation valve (such as an umbrella-shaped one-way valve) separately to connect with an external inflation pump to inflate the air bag waist support, or operate the deflation valve (such as a normally closed valve) separately to deflate the air bag waist support, which is inconvenient to use. Utility Model Content

[0005] The utility model aims to provide a solenoid valve and a double valve structure for a car seat air bag lumbar support to solve the problems existing in the above-mentioned prior art, which is used for inflating and deflation of the air bag lumbar support and has a simple structure and is easy to use.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] The utility model provides a solenoid valve for an air bag lumbar support of an automobile seat, comprising a valve body, one end of the valve body being provided with an air source interface, and the other end being provided with an air bag interface and an air outlet, the air source interface being used to connect an air pump, and the air bag interface being used to connect an air bag lumbar support; a cavity being provided within the valve body, an iron core being fixed at a position in the cavity close to the air source interface, and an iron column being movably provided in the cavity, a first channel being passed through the iron core, a second channel being formed between the iron column and the inner wall of the cavity, one end of the first channel being able to be communicated with the air source interface through a one-way valve, and the other end being able to be communicated with the air source interface through a one-way valve, and the other end being able to be communicated with the air source interface through a one-way valve. The valve body is provided with a solenoid, which is close to the cavity. When the solenoid is not energized, the iron column is separated from the iron core, the air outlet is closed, and the first channel is opened so that the air source interface can be connected to the air bag interface; when the solenoid is energized, the iron column is magnetically attracted to the iron core, the air outlet is opened, and the first channel is closed so that the air bag interface can be connected to the air bag interface.

[0008] Preferably, a first rubber pad is provided at one end of the iron column, and a second rubber pad is provided at the other end, the first rubber pad is used to close the air outlet, and the second rubber pad is used to close the first channel.

[0009] Preferably, the air inlet end of the one-way valve is used to connect to the air pump, and the air outlet end of the one-way valve can be communicated with the first channel. A plug is provided inside the one-way valve, and a one-way valve spring is provided between the plug and the air outlet end of the one-way valve, so that the plug can close or open the air inlet end of the one-way valve.

[0010] Preferably, a rubber sealing ring is provided inside the air inlet end of the one-way valve.

[0011] Preferably, the iron core spring is disposed in the first channel, and one end of the iron core spring abuts against the air outlet end of the one-way valve, and the other end abuts against the second rubber pad.

[0012] Preferably, a first sealing ring is sleeved on the iron core, and a second sealing ring is sleeved on the one-way valve.

[0013] Preferably, the solenoid is a structure formed by enameled wire spirally wrapped around the valve body.

[0014] Preferably, the solenoid valve for the lumbar support of an automobile seat airbag further comprises an iron shell, which is arranged on the valve body and can cover the solenoid.

[0015] The utility model also provides a double valve structure for a car seat air bag lumbar support, comprising a controller and the above-mentioned solenoid valve for the car seat air bag lumbar support, wherein two solenoid valves for the car seat air bag lumbar support are provided, and both of the two solenoid valves for the car seat air bag lumbar support are electrically connected to the controller, and the controller is used to control the two solenoid valves for the car seat air bag lumbar support to inflate and deflate the two air bag lumbar supports.

[0016] Preferably, the controller is a PCB board, the two car seat airbag lumbar supports are mounted on the PCB board, and the PCB board can be controlled by mechanical buttons.

[0017] Compared with the prior art, the utility model has achieved the following technical effects:

[0018] The utility model provides an electromagnetic valve for a lumbar support of an automobile seat air bag, comprising a valve body, one end of the valve body being provided with an air source interface, and the other end being provided with an air bag interface and an air outlet; a cavity being provided in the valve body, an iron core being fixed at a position close to the air source interface in the cavity, and an iron column being movably provided in the cavity, a first channel running through the iron core, a second channel being formed between the iron column and the inner wall of the cavity, one end of the first channel being able to communicate with the air source interface through a one-way valve, and the other end being able to communicate with the second channel, the second channel being able to communicate with the air bag interface and the air outlet, an iron core spring being provided between the iron column and the iron core, and a spring spring being provided on the valve body close to the cavity A solenoid is arranged; when the air bag waist support needs to be inflated, the air pump is connected to the air source interface, and the air bag waist support is connected to the air bag interface. At this time, the solenoid is in an unpowered state, the iron column is separated from the iron core, and the air outlet is closed, and the first channel is opened so that the air source interface can be connected to the air bag interface, and the air pump is turned on to inflate the air bag waist support; when the air bag waist support needs to be deflated, the solenoid is energized to generate a magnetic field. Under the action of the magnetic field, the iron column is magnetically attracted to the iron core, and the air outlet is opened, and the first channel is closed so that the air bag interface is connected to the air outlet. At this time, the high-pressure gas in the air bag waist support can be discharged from the air outlet to realize the deflation process. The utility model is used for inflating and deflation of the air bag waist support, and has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of a solenoid valve for a lumbar support of an automobile seat airbag provided in the first embodiment of the utility model from a first angle;

[0021] Figure 2 A second angle schematic diagram of the electromagnetic valve for the lumbar support of the automobile seat airbag provided in the first embodiment of the utility model;

[0022] Figure 3 A third angle schematic diagram of the electromagnetic valve for the lumbar support of the automobile seat airbag provided in the first embodiment of the utility model;

[0023] Figure 4 A cross-sectional view of a solenoid valve for a lumbar support of an automobile seat airbag provided in Embodiment 1 of the utility model;

[0024] Figure 5 A schematic diagram of the first angle of the iron column provided in the first embodiment of the utility model;

[0025] Figure 6 for Figure 5 Sectional view of AA in the middle;

[0026] Figure 7 A second angle schematic diagram of the iron column provided in the first embodiment of the utility model;

[0027] Figure 8 A third angle schematic diagram of the iron column provided in the first embodiment of the utility model;

[0028] Fig. 9 A schematic diagram of an iron core provided in Embodiment 1 of the present utility model;

[0029] Fig.10 for Fig. 9 Cross-sectional view of the middle BB;

[0030] Fig.11 A schematic diagram of the inflating state of the electromagnetic valve for the lumbar support of the automobile seat airbag provided in the first embodiment of the utility model;

[0031] Fig.12 A schematic diagram of the deflation state of the electromagnetic valve for the lumbar support of the automobile seat air bag provided in the first embodiment of the utility model;

[0032] Fig.13 A schematic diagram of a double valve structure for a lumbar support of an automobile seat air bag provided in the second embodiment of the utility model from a first angle;

[0033] Fig.14 A second angle schematic diagram of the double valve structure for the lumbar support of an automobile seat air bag provided in the second embodiment of the utility model;

[0034] Fig.15 A third angle schematic diagram of the double valve structure for the lumbar support of an automobile seat air bag provided in the second embodiment of the utility model;

[0035] Fig.16A driving circuit diagram of a solenoid valve and an air source of a double-valve structure for a lumbar support of an automobile seat airbag provided in the second embodiment of the utility model;

[0036] Fig.17 A solenoid valve protection circuit diagram of a double-valve structure for a lumbar support of an automobile seat airbag provided in the second embodiment of the utility model;

[0037] Fig.18 An air source protection circuit diagram of a double valve structure for a lumbar support of an automobile seat air bag provided in the second embodiment of the utility model;

[0038] Fig.19 This is a circuit test point diagram of a double valve structure for a car seat airbag lumbar support provided in Example 2 of the utility model.

[0039] In the figure: 1-valve body, 2-air source interface, 3-air bag interface, 4-air outlet, 5-iron core, 501-iron core spring, 502-first sealing ring, 6-iron column, 601-first rubber pad, 602-second rubber pad, 7-one-way valve, 701-plug, 702-one-way valve spring, 703-rubber sealing ring, 704-second sealing ring, 8-solenoid, 9-iron shell, 10-PCB board. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] The utility model aims to provide a solenoid valve and a double valve structure for a car seat air bag lumbar support to solve the problems existing in the prior art. The utility model is used for inflating and deflating the air bag lumbar support and has a simple structure and is easy to use.

[0042] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0043] Embodiment 1

[0044] like Figure 1-Figure 4As shown, this embodiment provides a solenoid valve for an air bag lumbar support for an automobile seat, comprising a valve body 1, one end of the valve body 1 is provided with an air source interface 2, and the other end is provided with an air bag interface 3 and an air outlet 4, the air source interface 2 is used to connect an air pump, the air bag interface 3 is used to connect an air bag lumbar support, and the air outlet 4 is connected to the outside air; a cavity is provided in the valve body 1, an iron core 5 is fixed at a position near the air source interface 2 in the cavity, and an iron column 6 is movably provided in the cavity, a first channel runs through the iron core 5, a second channel is formed between the iron column 6 and the inner wall of the cavity, one end of the first channel can be connected to the air source interface 2 through a one-way valve 7, and the other end can be connected to the second channel The second channel can be connected with the air bag interface 3 and the air outlet 4, and an iron core spring 501 is arranged between the iron column 6 and the iron core 5; a solenoid 8 is arranged on the valve body 1 near the cavity, and the solenoid 8 is a structure formed by spirally winding the valve body 1 with enameled wire. When the enameled wire is energized, the solenoid 8 generates a magnetic field; when the solenoid 8 is not energized, the iron column 6 is separated from the iron core 5, and the air outlet 4 is closed, and the first channel is opened so that the air source interface 2 can be connected with the air bag interface 3; when the solenoid 8 is energized, under the action of the magnetic field, the iron column 6 is magnetically attracted to the iron core 5, and the air outlet 4 is opened, and the first channel is closed, so that the air bag interface 3 is connected with the air outlet 4.

[0045] In this embodiment, if Figure 5-Figure 8 As shown, a first rubber pad 601 is provided at one end of the iron column 6, and a second rubber pad 602 is provided at the other end. The first rubber pad 601 is used to close the air outlet 4, and the second rubber pad 602 is used to close the first channel. Specifically, the iron column 6 is made of pure iron and has magnetism in a magnetic field. Both ends of the iron column 6 are provided with card holes, and the two card holes are respectively clamped to the first rubber pad 601 and the second rubber pad 602. The rubber material facilitates sealing the channel.

[0046] In this embodiment, if Figure 9-10 As shown, the air inlet end of the one-way valve 7 (i.e., the air source interface 2) is used to connect to the air pump, and the air outlet end of the one-way valve 7 can be connected to the first channel. A plug 701 is provided in the one-way valve 7, and a one-way valve spring 702 is provided between the plug 701 and the air outlet end of the one-way valve 7, so that the plug 701 can close or open the air inlet end of the one-way valve 7.

[0047] Furthermore, a rubber sealing ring 703 is provided in the air inlet end of the one-way valve 7; when in use, when the gas flows from bottom to top, the one-way valve spring 702 contracts under the action of the gas pressure, and a gap is opened between the plug 701 and the rubber sealing ring 703, so that the gas can pass through the air outlet end of the one-way valve 7. When the gas flows from top to bottom, the plug 701 and the rubber sealing ring 703 fit more closely, so that the gas cannot pass through the one-way valve 7, thereby realizing the function of the one-way valve 7 to allow the gas to pass in one direction only.

[0048] In this embodiment, the iron core spring 501 is disposed in the first channel, and one end of the iron core spring 501 abuts against the air outlet end of the one-way valve 7 , and the other end abuts against the second rubber pad 602 .

[0049] In this embodiment, a first sealing ring 502 is sleeved on the iron core 5 , and a second sealing ring 704 is sleeved on the one-way valve 7 .

[0050] In this embodiment, the solenoid valve for the lumbar support of the automobile seat airbag also includes an iron shell 9, which is arranged on the valve body 1 and can cover the solenoid 8; the iron shell 9 in this embodiment has two functions, the first is to gather the magnetic field, and the second is that the enameled wire will generate heat when it is energized, and the iron shell 9 can play a role in heat dissipation.

[0051] The working process of the electromagnetic valve for the automobile seat airbag lumbar support provided in this embodiment is as follows:

[0052] When using this valve to inflate the air bag lumbar support, Fig.11 As shown (the direction of the arrow in the figure indicates the direction of gas flow), the solenoid 8 is in an unpowered state, the iron column 6 is separated from the iron core 5, and under the action of the iron core spring 501, the first rubber pad 601 on the top of the iron column 6 closes the air outlet 4, and the second rubber pad 602 at the bottom of the iron column 6 is separated from the first channel, so that the air source interface 2 can be connected with the air bag interface 3, and the air pump is turned on, and the air pump introduces gas to the air inlet end of the one-way valve 7 (i.e., the air source interface 2), and the gas enters the air bag waist support through the air bag interface 3 to realize the inflation process.

[0053] When using this valve to deflate the air bag lumbar support, Fig.12 As shown (the direction of the arrow in the figure indicates the direction of gas flow), the solenoid 8 is in an energized state, generating a magnetic field. Under the action of the magnetic field, the iron column 6 compresses the iron core spring 501 and is magnetically attracted to the iron core 5. The first rubber pad 601 on the top of the iron column 6 is separated from the air outlet 4, and the second rubber pad 602 at the bottom of the iron column 6 closes the first channel, so that the air bag interface 3 is connected to the air outlet 4. At this time, the high-pressure gas in the air bag waist support can pass through the air outlet 4 to realize the deflation process.

[0054] Embodiment 2

[0055] The double valve structure for the automobile seat air bag lumbar support provided in this embodiment includes a controller and the above-mentioned solenoid valve for the automobile seat air bag lumbar support. Two solenoid valves for the automobile seat air bag lumbar support are provided. The two solenoid valves for the automobile seat air bag lumbar support are electrically connected to the controller. The controller is used to control the two solenoid valves for the automobile seat air bag lumbar support to inflate and deflate the two air bag lumbar supports.

[0056] Furthermore, the controller is a PCB board 10, and the two car seat airbag lumbar supports are both installed on the PCB board 10, and the PCB board 10 can be controlled by mechanical buttons.

[0057] The working principle of the PCB board 10 is briefly described as follows:

[0058] 1) Fig.16 This is the driving circuit diagram of the solenoid valve and gas source. According to the different requirements of the control working conditions, Schottky diodes are used for directional control. Since Schottky diodes have unidirectional conductivity, different driving circuits can be executed independently without crosstalk.

[0059] 2) Fig.17 This is the solenoid valve protection circuit diagram. When the solenoid valve is working, it will store a certain amount of energy and generate reverse electromotive force. This part of energy and reverse electromotive force may cause damage to the solenoid valve itself and the circuits nearby. Therefore, it is necessary to release the energy and reverse electromotive force in a directional manner after the solenoid valve finishes working. The diode in the figure performs this protection function.

[0060] 3) Fig.18 This is the air source protection circuit diagram. The air source will store a certain amount of energy and generate reverse electromotive force when working. This energy and reverse electromotive force may cause damage to the air pump itself and the nearby circuits. Therefore, it is necessary to release the energy and reverse electromotive force in a directional manner after the air source finishes working. The diode in the figure performs this protection function.

[0061] 4) Fig.19 This is a circuit test point diagram. When debugging or monitoring a circuit, the circuit's operating status and operating data can be obtained through the circuit test points.

[0062] In summary, the technical advantages of the solenoid valve and double valve structure for the lumbar support of the automobile seat airbag provided by the utility model are:

[0063] First, it has a simple structure, good reliability and low cost.

[0064] Second, the highly integrated design is small in size and easy to install; each air pipe joint adopts a snap-on design, which is firmly fixed and not easy to fall off.

[0065] Third, direct control by mechanical buttons replaces the complex control components of the CPU, which reduces the cost of electrical appliances.

[0066] Fourth, the outer shell adds a heat dissipation structure to effectively reduce the temperature of the solenoid valve during use and increase the product life.

[0067] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A solenoid valve for a car seat airbag lumbar support, characterized in that: The invention comprises a valve body, one end of which is provided with an air source interface, and the other end is provided with an air bag interface and an air outlet, wherein the air source interface is used to connect an air pump, and the air bag interface is used to connect an air bag waist support; a cavity is provided in the valve body, an iron core is fixed at a position close to the air source interface in the cavity, and an iron column is movably provided in the cavity, a first channel runs through the iron core, a second channel is formed between the iron column and the inner wall of the cavity, one end of the first channel can be communicated with the air source interface through a one-way valve, and the other end can be communicated with the second channel, The second channel can be communicated with the air bag interface and the air outlet, and an iron core spring is arranged between the iron column and the iron core; a solenoid is arranged on the valve body at a position close to the cavity, and when the solenoid is not energized, the iron column is separated from the iron core, and the air outlet is closed, and the first channel is opened so that the air source interface can be communicated with the air bag interface; when the solenoid is energized, the iron column is magnetically attracted to the iron core, and the air outlet is opened, and the first channel is closed so that the air bag interface is communicated with the air outlet.

2. The solenoid valve for lumbar support of automobile seat airbag according to claim 1, characterized in that: A first rubber pad is disposed at one end of the iron column, and a second rubber pad is disposed at the other end thereof. The first rubber pad is used to close the air outlet, and the second rubber pad is used to close the first channel.

3. The solenoid valve for lumbar support of automobile seat airbag according to claim 2, characterized in that: The air inlet end of the one-way valve is used to connect to the air pump, and the air outlet end of the one-way valve can be communicated with the first channel. A plug is arranged inside the one-way valve, and a one-way valve spring is arranged between the plug and the air outlet end of the one-way valve, so that the plug can close or open the air inlet end of the one-way valve.

4. The solenoid valve for lumbar support of automobile seat airbag according to claim 3, characterized in that: A rubber sealing ring is arranged inside the air inlet end of the one-way valve.

5. The solenoid valve for lumbar support of automobile seat airbag according to claim 3, characterized in that: The iron core spring is arranged in the first channel, and one end of the iron core spring abuts against the air outlet end of the one-way valve, and the other end of the iron core spring abuts against the second rubber pad.

6. The solenoid valve for lumbar support of automobile seat airbag according to claim 1, characterized in that: The iron core is sleeved with a first sealing ring, and the one-way valve is sleeved with a second sealing ring.

7. The solenoid valve for lumbar support of automobile seat airbag according to claim 1, characterized in that: The solenoid is a structure formed by enameled wire spirally wrapped around the valve body.

8. The solenoid valve for lumbar support of automobile seat airbag according to claim 1, characterized in that: The electromagnetic valve for the lumbar support of the automobile seat air bag further comprises an iron shell, which is arranged on the valve body and can cover the solenoid.

9. A double valve structure for a lumbar support of an automobile seat airbag, characterized in that: It comprises a controller and a solenoid valve for a lumbar support of an automobile seat air bag as claimed in any one of claims 1 to 8, wherein two solenoid valves for the lumbar support of an automobile seat air bag are provided, and both of the two solenoid valves for the lumbar support of an automobile seat air bag are electrically connected to the controller, and the controller is used to control the two solenoid valves for the lumbar support of an automobile seat air bag to inflate and deflate the two air bag lumbar supports.

10. The double valve structure for lumbar support of automobile seat airbag according to claim 9, characterized in that: The controller is a PCB board, and the two car seat airbag lumbar supports are both installed on the PCB board, and the PCB board can be controlled by mechanical buttons.

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