Inflator pressure automatic detection device

Abstract

The present invention discloses an automatic pressure detection device for an inflator, comprising an inflator and an inflation control module: a first joint of a connecting pipe connected to the inflator is connected to a first pipeline and an air nozzle in sequence to inflate an inflated object (such as a tire); a second joint of the connecting pipe connected to the inflator is connected to a valve core channel element, a regulating valve and a pressure sensor of the inflation control module in sequence, and the pressure sensor is electrically connected to a circuit board; and the flow rate of the valve core channel element is equal to that of the air nozzle, so that the inflation control module can simulate the inflation flow rate of the inflated object; thereby, the air pressure output through the end of the regulating valve can be close to the same as the real air pressure inside the inflated object, and when the air pressure value detected by the pressure sensor reaches a preset inflation value, the circuit board controls the inflator to stop operating, so that the inflator can actually perform the inflation operation according to the air pressure required by the inflated object.

Description

Technical Field

[0001] The invention relates to an automatic pressure detection device for an inflator. Background Art

[0002] As for the working principle of the inflator, it is mainly that the internal electric motor directly drives the crankshaft, causing the crankshaft to rotate, and then drives the connecting rod to make the piston move up and down, so as to cause the cylinder volume to change, and the pressurized gas is compressed and discharged; therefore, during the entire compression stroke, due to the change in cylinder volume, the compressed air passes through a one-way valve (check valve), and a hose outputs the pressurized gas through the air nozzle, so that an object can be inflated.

[0003] In addition, in order to prevent the inflator from over-inflating an object and causing the inflated object to burst or be damaged, the conventional inflator is provided with a pressure gauge and a pressure detector, so that the inflator can inflate an inflated object (such as a tire) according to a preset pressure. During the inflation process, when the pressure detector detects that the gas pressure output by the inflator reaches a preset pressure (i.e., the inflation poundage), the inflator will automatically stop the inflation operation to avoid over-inflation of the inflated object and excessive pressure problems.

[0004] However, the pressure detectors of the inflators with the ability to detect pressure are all installed at the outlet of the inflator. In addition, in actual physical phenomena, the pressure value at the outlet of the inflator must be greater than the pressure of the inflated object (such as a tire) during the instantaneous start-up and the start-up operation. Therefore, when the pressure detector detects that the gas pressure output by the inflator reaches the predetermined pressure (i.e., the number of pounds of air), the pressure detected by the pressure detector is actually only the pressure value at the outlet of the inflator, not the actual pressure value of the inflated object (such as a tire). This situation will inevitably cause a relative difference between the actual pressure of the inflated object and the set pressure value of the pressure gauge after the inflating operation of the inflated object is completed, thereby misleading the inflated pressure value of the inflated object to be the correct pressure value. Therefore, the inflated object is used under insufficient actual inflation pressure, which will affect the use efficiency and safety of the inflated object.

[0005] Therefore, the inflator with the ability to detect pressure is further equipped with a pressure detector at the inflation nozzle of the air outlet pipe, so as to accurately detect the actual pressure of the inflated object, so as to effectively reduce the error value between the actual air pressure of the inflated object and the output air pressure of the inflator; however, the large flow (high pressure) gas output by the inflator will be concentrated at the inflation nozzle to form a physical back pressure phenomenon, resulting in the data detected by the pressure detector installed at the inflation nozzle not being the actual air pressure of the inflated object. For example, if the data detected by the pressure detector at the inflation nozzle increases instantly, the control circuit of the inflator will misjudge that the inflated object has reached the inflation preset value, causing the control circuit to control the inflator to stop operating, resulting in the actual air pressure of the inflated object still not reaching the inflation preset value.

[0006] Therefore, how to provide a device that can accurately inflate an inflatable object is the main issue that the present invention aims to solve. Summary of the invention

[0007] The purpose of the present invention is to provide a purpose for the deficiencies in the prior art.

[0008] The technical solution of the present invention is as follows:

[0009] An automatic pressure detection device for an inflator, characterized by comprising:

[0010] An inflator, which is provided with at least one air outlet port, the air outlet port is connected to a connecting pipe, the connecting pipe includes a first joint and a second joint, the first joint is connected to a first pipeline, the other end of the first pipeline is connected to an air nozzle, the air nozzle is provided with an air nozzle core inside, and the air nozzle is used to connect to a preset inflatable object;

[0011] An inflation control module, comprising a valve core channel element, a regulating valve, a pressure sensor and a circuit board, wherein the valve core channel element is connected to the second joint and makes the gas flow of the valve core channel element equal to the gas flow of the valve core of the valve, the regulating valve is connected to the valve core channel element to preset the gas flow, the pressure sensor is connected to the regulating valve to detect the gas pressure output by the regulating valve, the circuit board is electrically connected to the pressure sensor and the electric motor preset by the inflator, and the circuit board is used to receive the pressure value information detected by the pressure sensor and control the electric motor to start or shut down;

[0012] Part of the gas output by the inflator flows to the first joint of the connecting pipe, the first pipeline and the air nozzle in sequence to inflate the inflatable object. Part of the gas output by the inflator flows to the second joint of the connecting pipe, the valve core channel element, the regulating valve and the pressure sensor in sequence. The circuit board is then used to receive and interpret the pressure information detected by the pressure sensor and control the electric motor to start or shut down.

[0013] As a further solution of the present invention, a connecting joint is further sleeved on the outside of the valve core channel element, one end of the connecting joint is connected to a second pipeline, and the other end of the second pipeline is connected to the second joint to form a communication, so that the valve core channel element and the second joint form a connecting structure that communicates.

[0014] As a further solution of the present invention, the pressure sensor is connected to the end of the regulating valve to detect the gas pressure value output by the regulating valve.

[0015] As a further solution of the present invention, the inflation control module is directly arranged with the inflator in an integrated structure.

[0016] As a further solution of the present invention, the inflation control module is installed on the inflator in an external connection manner.

[0017] Beneficial Effects

[0018] Part of the gas output by the inflator flows to the first joint of the connecting pipe, the first pipeline and the air nozzle in sequence to inflate the inflated object (such as a tire); in addition, part of the gas output by the inflator flows to the second joint of the connecting pipe, the valve core channel element, the control valve and the pressure sensor in sequence, and then the circuit board is used to receive and interpret the pressure information detected by the pressure sensor and control the electric motor to start or shut down; in this way, the flow rate of the valve core channel element of the inflation control module and the air nozzle core of the air nozzle of the inflated object (such as a tire) is equal , so that the inflation control module can simulate the inflation flow of the inflated object; then the regulating valve of the inflation control module can be used to further preset and adjust (limit) the gas flow, so that the air pressure output at the end of the regulating valve can be close to the internal air pressure value of the inflated object; when the air pressure value detected by the pressure sensor of the inflation control module reaches the preset inflation value of the inflated object, the circuit board of the inflation control module can control the inflator to stop operating, so that the inflation function can accurately and precisely perform automatic inflation operations according to the air pressure required by the inflated object. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the automatic pressure detection device of the inflator of the present invention;

[0020] Figure 2It is a schematic diagram of a first embodiment of the automatic pressure detection device for an inflator of the present invention;

[0021] Figure 3 It is a partial enlarged and cross-sectional view of the automatic pressure detection device of the inflator of the present invention;

[0022] Figure 4 It is a schematic diagram of a second embodiment of the automatic pressure detection device of an inflator according to the present invention.

[0023] Description of Reference Numerals

[0024] 1. Inflator;

[0025] 11. Air outlet port;

[0026] 12. Connecting pipe;

[0027] 121, first joint;

[0028] 122, second joint;

[0029] 123, third joint;

[0030] 13. First pipeline;

[0031] 14. Gas nozzle;

[0032] 2. Inflation control module;

[0033] 21. Valve core channel components;

[0034] 22. Control valve;

[0035] 23. Pressure sensor;

[0036] 24. Circuit board;

[0037] 3. Inflatable objects;

[0038] 4. Connecting joints;

[0039] 5. The second pipeline. Specific embodiments

[0040] Now, exemplary embodiments of the present invention will be described in detail, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The embodiments will be described below in order to explain the present general inventive concept by referring to the drawings.

[0041] Please refer to the first to fourth figures, the present invention discloses an automatic pressure detection device for an inflator, including an inflator 1 and an inflation control module 2.

[0042] The inflator 1 (e.g., an electric inflator) is provided with at least one outlet port 11, and the outlet port 11 is connected to a connecting pipe 12, and the connecting pipe 12 includes a first joint 121 and a second joint 122, and the first joint 121 is connected to a first pipeline 13, and the other end (end) of the first pipeline 13 is connected to a nozzle 14, and a nozzle core is provided inside the nozzle 14, and the nozzle 14 is used to connect to a preset inflatable object 3 (e.g., a tire, a ball, etc.). In addition, the connecting pipe 12 further includes a third joint 123, and the third joint 123 is connected to a pressure display device (e.g., a mechanical pressure, an electronic digital pressure display device, not shown in the figure). Since the pressure display device is not a claimed feature of this case, it will not be further discussed.

[0043] The inflation control module 2 includes a valve core channel element 21, a regulating valve 22, a pressure sensor 23 and a circuit board 24 (eg, a control circuit).

[0044] The valve core channel element 21 is connected to the second joint 122 of the connecting pipe 12. For example, a connecting joint 4 may be further sleeved on the outside of the valve core channel element 21, and a second pipeline 5 is connected to one end of the connecting joint 4, and then the other end of the second pipeline 5 is connected to the second joint 122 to form a connection, so that the valve core channel element 21 can be connected to the second joint 122, so that the gas delivered through the second joint 122 can only pass through the valve core channel element 21; the gas flow rate of the valve core channel element 21 is equal to the gas flow rate of the gas nozzle core provided with the gas nozzle 14.

[0045] The regulating valve 22 is connected to the valve core channel element 21. For example, the regulating valve 22 can be connected to the other end of the connecting joint 4, so that the regulating valve 22 can be connected to the valve core channel element 21, so that the gas delivered through the valve core channel element 21 can only pass through the regulating valve 22, and the regulating valve 22 is used to preset and adjust (limit) the output flow of the gas, so as to preset and adjust the gas pressure output through the regulating valve 22.

[0046] The pressure sensor 23 is connected to the control valve 22 . For example, the pressure sensor 23 can be connected to the other end (end) of the control valve 22 , so that the pressure sensor 23 is used to detect the gas pressure value output by the control valve 22 .

[0047] The circuit board 24 is electrically connected to the pressure sensor 23 and the electric motor preset in the inflator 1. The circuit board 24 is used to receive the pressure information detected by the pressure sensor 23 and control the electric motor of the inflator 1 to start or shut down. In addition, the circuit board 24 can set the inflation pressure value of the inflated object 3. In addition, the circuit board 24 can be electrically connected to the power module of the inflator 1 so that the circuit board 24 obtains power to provide power for the operation of the inflator 1.

[0048] The present invention is illustrated by an embodiment: when the inflator 1 is started, part of the gas output by the inflator 1 flows to the first connector 121 of the connecting pipe 12, the first pipeline 13 and the air nozzle 14 in sequence to inflate the inflated object 3 (such as a tire); in addition, part of the gas output by the inflator 1 flows to the second connector 122 of the connecting pipe 12, the second pipeline 5, the valve core channel element 21, the regulating valve 22 and the pressure sensor 23 in sequence, and then the circuit board 24 is used to receive and interpret the pressure information detected by the pressure sensor 23 and control the electric motor of the inflator 1 to start or shut down.

[0049] Therefore, the technical feature of the present invention is that the valve core channel element 21 of the inflation control module 2 is equal to the flow rate of the valve core of the air nozzle 14 provided for the inflated object 3 (such as a tire), so that the inflation control module 2 can simulate the inflation flow rate of the inflated object 3; and then the regulating valve 22 of the inflation control module 2 can be further preset and adjusted (limited) The flow rate of the gas can be made so that the air pressure value output at the end of the regulating valve 22 can be close to the internal air pressure of the inflated object 3; when the air pressure value detected by the pressure sensor 23 of the inflation control module 2 reaches the preset inflation value of the inflated object 3, the circuit board 24 of the inflation control module 2 can control the inflator 1 to stop operating, so that the inflator 1 can accurately perform the inflation operation according to the air pressure required by the inflated object 3.

[0050] Furthermore, the inflation control module 2 can be installed inside the inflator 1 to form an integrated structure with the inflator 1 (as shown in the first figure); or, the inflation control module 2 is installed in the structure of the inflator 1 by external connection (as shown in the fourth figure).

Claims

1. An automatic pressure detection device for an inflator, characterized in that: Included are: An inflator, which is provided with at least one air outlet port, the air outlet port is connected to a connecting pipe, the connecting pipe includes a first joint and a second joint, the first joint is connected to a first pipeline, the other end of the first pipeline is connected to an air nozzle, the air nozzle is provided with an air nozzle core inside, and the air nozzle is used to connect to a preset inflatable object; An inflation control module, comprising a valve core channel element, a regulating valve, a pressure sensor and a circuit board, wherein the valve core channel element is connected to the second joint and makes the gas flow of the valve core channel element equal to the gas flow of the valve core of the valve, the regulating valve is connected to the valve core channel element to preset the gas flow, the pressure sensor is connected to the regulating valve to detect the gas pressure output by the regulating valve, the circuit board is electrically connected to the pressure sensor and the electric motor preset by the inflator, and the circuit board is used to receive the pressure value information detected by the pressure sensor and control the electric motor to start or shut down; Part of the gas output by the inflator flows to the first joint of the connecting pipe, the first pipeline and the air nozzle in sequence to inflate the inflatable object. Part of the gas output by the inflator flows to the second joint of the connecting pipe, the valve core channel element, the regulating valve and the pressure sensor in sequence. The circuit board is then used to receive and interpret the pressure information detected by the pressure sensor and control the electric motor to start or shut down.

2. An automatic inflator pressure detection device as described in claim 1, wherein a connecting joint is sleeved on the outside of the valve core channel element, one end of the connecting joint is connected to a second pipeline, and the other end of the second pipeline is connected to the second joint to form a communication, so that the valve core channel element and the second joint form a connecting structure that communicates.

3. The automatic pressure detection device of an inflator as claimed in claim 1, wherein the pressure sensor is connected to a terminal end of the control valve to detect the gas pressure value output by the control valve.

4. The automatic pressure detection device for an inflator as described in claim 1, wherein the inflation control module is directly integrated with the inflator.

5. The automatic pressure detection device for an inflator as described in claim 1, wherein the inflation control module is externally connected and mounted on the structure of the inflator.

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