Pump and valve integrated device

Abstract

This utility model belongs to the technical field of air pumps for automotive seats, specifically relating to an integrated pump and valve device. This integrated pump and valve device includes: an air pump with an air inlet at one corner of its end cap; an air pipe vertically connected to the air pump inlet via an air inlet, with the air outlet facing upwards; a pressure measuring port along one side of the end cap corner on the air pipe, connected to a pressure sensor; and an exhaust port along the other side of the end cap corner on the air pipe, connected to a solenoid valve; the air inlet, exhaust port, pressure measuring port, and exhaust port are interconnected. In this integrated pump and valve device, the pressure sensor can be constantly connected to the air pipe, which in turn is constantly connected to the air bag. This ensures that the pressure sensor and the air bag are always in the same gas environment, so that the air pressure obtained at the pressure sensor is consistent with the air pressure inside the air bag, whether the air pump is inflating or deflating the air bag.

Description

Technical Field

[0001] This utility model belongs to the technical field of air pumps for automotive seats, specifically relating to an integrated pump and valve device. Background Technology

[0002] The pneumatic lumbar support pump and valve integrated machine for automobile seats disclosed in CN110030175B adopts the following air circuit structure: with an air pump as the base, a solenoid valve is first set on the end cover of the air pump, and then a gas channel for gas to enter the air bag and gas to exit the air bag is set on the solenoid valve. The gas pumped out by the air pump first passes through the gas passage at the solenoid valve, and the gas after passing through the solenoid valve enters the air bag through the gas channel.

[0003] Because part of the air path is handled by the solenoid valve, an additional wiring harness is needed to create the air passage. This increases the size of the solenoid valve and reduces the available space above the air pump end cap for the gas passage. There is no space in the gas passage to connect a branch to the pressure sensor, meaning the pressure sensor can only connect to the air passage at the solenoid valve. This results in the following: when inflating the air bag, the gas pumped by the air pump first passes through the air passage, where its pressure is captured by the pressure sensor, before entering the gas passage and then the air bag. During inflation, the pressure sensor is located at a relatively high pressure source. Conversely, when deflating, the gas is directly discharged through the gas passage, with very little reaching the pressure sensor, making it almost impossible for the sensor to capture the pressure of this airflow. Therefore, the actual inflation pressure and residual pressure after deflation obtained by the pump-valve integrated machine for automotive seat pneumatic lumbar support deviate from their true values.

[0004] Therefore, this application proposes an integrated pump and valve device. Utility Model Content

[0005] The purpose of this invention is to provide a pump-valve integrated device to solve the technical problem that the actual inflation pressure of the air bag and the residual air pressure after the air bag is deflated in the current pump-valve integrated machine for pneumatic lumbar support of automobile seats deviate from their true values.

[0006] To solve the above-mentioned technical problems, this utility model provides an integrated pump and valve device, comprising: an air pump with an air port at one corner of its end cap; an air pipe that is vertically inserted into the air pump port through an air inlet, with the air outlet facing upwards; a pressure measuring port along one side of the end cap corner on the air pipe, the pressure measuring port being connected to a pressure sensor; and an exhaust port along the other side of the end cap corner on the air pipe, the exhaust port being connected to a solenoid valve; the air inlet, exhaust port, pressure measuring port, and exhaust port are connected together.

[0007] Furthermore, a one-way valve is provided in the air inlet of the air pump.

[0008] Furthermore, the pressure measuring port is positioned close to the air outlet; the exhaust port is positioned close to the air inlet.

[0009] Furthermore, the solenoid valve includes: a solenoid valve body, which is sealed to the exhaust port through an exhaust port interface, and is adapted to separate the plug on the valve core from the exhaust port interface when energized, so that the exhaust port can be connected to the outside.

[0010] Furthermore, the solenoid valve body is mounted on a circuit board; the pressure sensor is mounted on the circuit board.

[0011] Furthermore, the air tube is provided with a circuit board connection hole; the circuit board is connected to the air tube through the circuit board connection hole via a connector; the air tube is squeezed into the air pump port through the air inlet and forms a squeeze connection with the air pump port.

[0012] Furthermore, the end cap is provided with several circuit board limiting protrusions.

[0013] The beneficial effects of this utility model are that the integrated pump and valve device of this utility model adopts an air pipe with an air inlet, an air outlet, a pressure measuring port and an exhaust port. After the air pipe is vertically inserted into the air pump port at one corner of the end cover of the air pump, a pressure sensor can be set along one side of the corner and a solenoid valve can be set along the other side of the corner. Therefore, the pressure sensor in this integrated pump and valve device can be constantly connected to the air pipe, and the air pipe is constantly connected to the air bag. In this way, the pressure sensor and the air bag are always in the same gas environment. Whether the air pump is inflating the air bag or the air bag is deflating, the air pressure obtained at the pressure sensor is consistent with the air pressure inside the air bag. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is an exploded view of the integrated pump and valve device of this utility model;

[0016] Figure 2 This is a perspective view of the air pipe of the integrated pump and valve device of this utility model;

[0017] Figure 3 This is a schematic diagram of the integrated pump and valve device of this utility model. Figure 1 ;

[0018] Figure 4 This is a schematic diagram of the integrated pump and valve device of this utility model. Figure 2 ;

[0019] Figure 5 This is a schematic diagram of the integrated pump and valve device of this utility model. Figure 3 ;

[0020] In the picture:

[0021] Air pump 100, end cap 110, air pump port 120, circuit board limiting boss 130, air pipe 200, air inlet 210, air outlet 220, pressure measuring port 230, exhaust port 240, circuit board connection hole 250, pressure sensor 300, solenoid valve 400, solenoid valve body 410, exhaust port interface 420, valve core 430, plug 440, one-way valve 500, circuit board 600, connector 610. Detailed Implementation

[0022] 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.

[0023] Example

[0024] like Figure 1 As shown, this utility model provides a pump-valve integrated device, including: an air pump 100, with an air pump port 120 opened at one corner of its end cap 110; and an air pipe 200, combined with... Figure 2 It is vertically inserted into the air pump port 120 through the air inlet 210, so that the air outlet 220 faces upward; for example Figure 2 As shown, the trachea 200 is provided with a pressure measuring port 230 along one side of the end cap 110 at that corner. Figure 1 Pressure sensor 300 is connected to pressure test port 230; for example Figure 2 As shown, the air pipe 200 is provided with an exhaust port 240 along the other side of the end cap 110 at that corner. Figure 1 The exhaust port 240 is connected to a solenoid valve 400; the air inlet 210, air outlet 220, pressure measuring port 230 and exhaust port 240 are connected.

[0025] This utility model's integrated pump and valve device employs an air pipe 200 with an air inlet 210, an air outlet 220, a pressure measuring port 230, and an exhaust port 240. The air pipe 200 is vertically inserted into the air pump port 120 at one corner of the end cap 110 of the air pump 100. A pressure sensor 300 can be installed along one side of this corner, and a solenoid valve 400 can be installed along the other side of this corner. Therefore, the pressure sensor 300 in this integrated pump and valve device can be constantly connected to the air pipe 200, and the air pipe 200 is constantly connected to the air bag. In this way, the pressure sensor 300 and the air bag are always in the same gas environment. Whether the air pump 100 is inflating the air bag or deflating the air bag, the air pressure obtained at the pressure sensor 300 is consistent with the air pressure inside the air bag.

[0026] The air outlet 220 is used to connect to the air bag.

[0027] like Figure 4 As shown, a one-way valve 500 is provided in the air pump port 120. The one-way valve 500 is opened by the airflow when the air pump 100 is pumping air, and returns to the closed state after the air pump 100 stops pumping air. Since the exhaust port 240 is also closed by the solenoid valve 400 when it is not energized, the air bag can be kept pressurized.

[0028] In this embodiment, as Figure 2 and Figure 3 As shown, the pressure measuring port 230 is positioned close to the air outlet 220; the exhaust port 240 is positioned close to the air inlet 210. This arrangement ensures that the pressure measuring port 230 is far from the air inlet 210 and the exhaust port 240, resulting in a stable airflow at the pressure measuring port 230 during both the inflation and deflation processes of the air bag.

[0029] like Figure 4 As shown, in this embodiment, the solenoid valve 400 may include: a solenoid valve body 410, which is sealed to the exhaust port 240 through an exhaust port interface 420, and is adapted to separate the plug 440 on the valve core 430 from the exhaust port interface 420 when energized, so that the exhaust port 240 is connected to the outside, thereby allowing the air bag to vent.

[0030] like Figure 4 As shown, the solenoid valve body 410 can be mounted on a circuit board 600; the pressure sensor 300 can also be mounted on the circuit board 600.

[0031] like Figure 2 As shown, the air pipe 200 may be provided with a circuit board connection hole 250; combined with Figure 3The circuit board 600 is connected to the air tube 200 via the circuit board connection hole 250 through the connector 610; the air tube 200 is squeezed into the air pump port 120 through the air inlet 210 and forms a squeeze connection with the air pump port 120. In this way, the pressure sensor 300, the solenoid valve 400, and the circuit board 600 controlling the pressure sensor 300 and the solenoid valve 400 are integrated with the air tube 200 and can be installed on the end cap 110 of the air pump 100.

[0032] like Figure 5 and Figure 1 As shown, the end cap 110 may be provided with several circuit board limiting bosses 130. These are used to guide the circuit board 600 when the integrated air tube 200, pressure sensor 300, solenoid valve 400, and circuit board 600 are installed onto the end cap 110 of the air pump 100. Simultaneously, the circuit board limiting bosses 130 may also be provided with limiting protrusions to align with corresponding limiting holes on the circuit board 600, resulting in a more secure installation.

[0033] In summary, the integrated pump and valve device of this utility model adopts an air pipe 200 with an air inlet 210, an air outlet 220, a pressure measuring port 230, and an exhaust port 240. The air pipe 200 is vertically inserted into the air pump port 120 at one corner of the end cap 110 of the air pump 100. A pressure sensor 300 can be set along one side of this corner, and a solenoid valve 400 can be set along the other side of this corner. Therefore, the pressure sensor 300 in this integrated pump and valve device can be constantly connected to the air pipe 200, and the air pipe 200 is constantly connected to the air bag. In this way, the pressure sensor 300 and the air bag are always in the same gas environment. Whether the air pump 100 is inflating the air bag or deflating the air bag, the air pressure obtained at the pressure sensor 300 is consistent with the air pressure inside the air bag.

[0034] 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.

[0035] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0036] 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 pump-valve integrated device, characterized by, include: An air pump (100) has an air pump port (120) at one corner of its end cap (110). The air tube (200) is vertically inserted into the air pump port (120) through the air inlet (210) so that the air outlet (220) faces upward; The trachea (200) is provided with a pressure measuring port (230) along one side of the corner of the end cap (110), and a pressure sensor (300) is connected to the pressure measuring port (230). The air pipe (200) is provided with an exhaust port (240) along the other side of the corner of the end cap (110), and the exhaust port (240) is connected to a solenoid valve (400). The air inlet (210), air outlet (220), pressure measuring port (230) and exhaust port (240) are connected.

2. The pump-valve integrated device according to claim 1, characterized in that, The air pump port (120) is equipped with a one-way valve (500).

3. The pump-valve integrated device according to claim 1, characterized in that, The pressure measuring port (230) is positioned close to the air outlet (220); The exhaust port (240) is positioned close to the air inlet (210).

4. The pump-valve integrated device according to claim 3, characterized in that, The solenoid valve (400) includes: The solenoid valve body (410) is sealed to the exhaust port (240) through the exhaust port interface (420), and is adapted to separate the plug (440) on the valve core (430) from the exhaust port interface (420) when energized, so that the exhaust port (240) can communicate with the outside.

5. The pump-valve integrated device according to claim 4, characterized in that, The solenoid valve body (410) is mounted on a circuit board (600); The pressure sensor (300) is mounted on the circuit board (600).

6. The pump-valve integrated device according to claim 5, characterized in that, The air pipe (200) is provided with a circuit board connection hole (250); The circuit board (600) is connected to the air pipe (200) via a connector (610) through a circuit board connection hole (250); The air pipe (200) is squeezed into the air pump port (120) through the air inlet (210) and forms a squeeze connection with the air pump port (120).

7. The pump-valve integrated device according to claim 6, characterized in that, The end cap (110) is provided with several circuit board limiting bosses (130).

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