External power supply type electric inflator

Abstract

The utility model relates to an external power supply type electric inflator, which comprises a shell, an inflator pump and a control module, the inflator pump is arranged in the shell and can be driven by electric power to inflate and deflate, the control module comprises a circuit board, a power supply interface, a starting switch and a pressure sensor, the circuit board is arranged in the shell and is electrically connected with the inflator pump, and the pressure sensor is electrically connected with the power supply interface. The power supply interface is electrically connected with the circuit board and can be connected with an external power source to supply power to the circuit board, the starting switch is connected with the circuit board and can be operated to control the circuit board to supply power to the inflator pump so as to drive the inflator pump, and the pressure sensor is electrically connected with the circuit board and arranged on the circuit board and in the sensing space. The sensing space is defined by a top cover of the inflator pump and the circuit board. By means of the power supply interface, built-in batteries can be omitted, the doubt that the batteries are damaged due to high temperature when placed on a vehicle is avoided, relevant specifications of the batteries do not need to be considered when passing through customs, and carrying is more convenient.

Description

Technical Field

[0001] The utility model relates to an electric air pump, in particular to an external power supply type electric air pump. Background Art

[0002] An electric air pump is an electric pump that uses electricity to drive the pump and provide gas power, so it can inflate items such as tires and basketballs. Compared with traditional inflation equipment such as air pumps that require manual operation, electric air pumps can inflate air by simply pressing a button, which is easier to operate.

[0003] Existing electric air pumps usually have a rechargeable battery inside. When the power of the rechargeable battery is used up, the electric air pump can be connected to a power source for charging, so that the electric air pump can be carried with you when you go out for convenient use. However, the disadvantage of existing electric air pumps is that since the rechargeable battery is set inside, the following problems may occur when you carry it out:

[0004] 1. If you need to go through customs to take a specific means of transportation when going out, you must pay attention to the relevant regulations when passing through customs for the rechargeable batteries in the existing electric air pumps, which is inconvenient to carry;

[0005] 2. When the outdoor temperature is high, the temperature inside vehicles such as cars and motorcycles will also rise. If the existing electric air pump is placed in a high temperature place in such vehicles, the rechargeable battery inside may be damaged by the high temperature, or even dangerous. Utility Model Content

[0006] In order to solve the problems encountered when carrying the existing electric air pump outside, the purpose of the utility model is to provide an external power supply electric air pump that omits the internal battery, thereby solving the problems of portability and safety.

[0007] The utility model solves the technical problem of an external power supply type electric air pump, which comprises:

[0008] a housing;

[0009] an air pump disposed in the housing and comprising a chamber, and an input channel and an output channel communicating the interior of the chamber with the exterior of the housing, the air pump being electrically driven to allow gas to enter the interior of the chamber through the input channel and flow out from the output channel; and

[0010] A control module is disposed in the housing and includes

[0011] a circuit board electrically connected to the air pump;

[0012] a power supply interface electrically connected to the circuit board and capable of being connected to an external power source to provide power to the circuit board; and

[0013] A start switch connected to the circuit board and capable of being operated to control the circuit board to provide power to the air pump, thereby driving the air pump;

[0014] The control module includes a pressure sensor, which is electrically connected to the circuit board and is arranged on the circuit board, and is arranged in a sensing space. The air pump includes a top cover, which is in contact with the circuit board. The sensing space is formed by the top cover and the circuit board. The sensing space is connected to the interior of the chamber of the air pump. The sensor can sense the pressure in the sensing space and transmit pressure information to the circuit board accordingly. The pressure sensor is arranged on the circuit board.

[0015] The technical means of the present invention can achieve improved effects in that: the external power supply type electric air pump proposed by the present invention can supply power to the circuit board that controls the operation of the electric air pump through the power supply interface that can be connected to the external power source. Thereby, the electric air pump can omit the design of a built-in battery. When it is carried out and placed in a car, there will be no concerns about high temperature causing battery damage. When passing through customs, there is no need to consider battery-related carrying regulations. Compared with existing electric air pumps with built-in rechargeable batteries, it is more convenient to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional appearance diagram of a preferred embodiment of the utility model.

[0017] Figure 2 This is an exploded view of a preferred embodiment of the present invention with the outer shell omitted.

[0018] Figure 3 It is a partial cross-sectional view of a preferred embodiment of the utility model.

[0019] Figure 4 The following is a circuit block diagram of a preferred embodiment of the present utility model.

[0020] Figure 5 This is a diagram of the inflatable usage state of a preferred embodiment of the utility model.

[0021] Figure 6 This is a schematic diagram of a preferred embodiment of the utility model when not in use. DETAILED DESCRIPTION

[0022] In order to understand the technical features and practical effects of the utility model in detail and to realize the utility model according to the content of the new model, the preferred embodiment shown in the figure is further described in detail as follows:

[0023] like Figures 1 to 3As shown, a preferred embodiment of the external power supply electric air pump of the utility model comprises a housing 10, an air pump 20 and a control module 30. The air pump 20 is disposed in the housing 10 and can perform inflation or deflation operations. The control module 30 is disposed in the housing 10 and serves as the core of power and signal transmission and control in the electric air pump.

[0024] like Figure 1 As shown, the housing 10 includes a shell 11, and an input opening 12 and an output opening 13 penetrating the shell 11. The shell 11 is surrounded by an internal space for arranging the air pump 20 and the control module 30. The input opening 12 and the output opening 13 are reserved for gas to enter and exit the air pump 20. The shell 11 is further penetrated by several other openings, so that some components of the control module 30 can be set on or protrude from the surface of the shell 10 for user operation or connection with other external components.

[0025] like Figure 2 and Figure 3 As shown, the air pump 20 includes a chamber 21, an input channel 22 and an output channel 23. A space 211 is formed inside the chamber 21 to accommodate gas. The input channel 22 is connected to the space 211 and the outside of the housing 10 to allow gas to flow into the space 211 of the chamber 21. The output channel 23 is also connected to the space 211 and the outside of the housing 10 to allow gas to flow out of the space 211 of the chamber 21. The air pump 20 can be driven by electricity to provide a gas pressure difference, so that the gas can flow from the input channel 22 into the space 211 and flow out from the output channel 23.

[0026] like Figure 2 and Figure 3 As shown, specifically, the air pump 20 includes a top cover 24, the chamber 21 and a driver 25 from top to bottom. The input channel 22 and the output channel 23 are provided through the top cover 24. The top cover 24 covers an opening formed by the space 211 of the chamber 21, and the space 211 is sealed. The space 211 is only communicated with the outside through the input channel 22 and the output channel 23. Figure 1 As shown, the input channel 22 and the output channel 23 are respectively arranged toward the input opening 12 and the output opening 13 of the housing 10, and are respectively communicated with the input opening 12 and the output opening 13, so as to be connected to the outside of the housing 10. The driver 25 is connected to the bottom of the chamber 21 and can be driven by electricity to provide a pressure difference as described above.

[0027] like Figures 2 to 4As shown, the control module 30 includes a circuit board 31, a power supply interface 32 and a start switch 33. The circuit board 31 is disposed in the housing 10 and is electrically connected to the air pump 20. Figure 2 and Figure 3 As shown, specifically, the driver 25 of the air pump 20 is provided with at least one power supply pin 251, and the circuit board 31 can be connected to at least one power supply pin 251 of the driver 25 via at least one cable, wherein the cable can transmit power and signals, so that the circuit board 31 can provide power to the air pump 20 and control the operation of the air pump 20.

[0028] like Figures 2 to 4 As shown, the power supply interface 32 and the start switch 33 are both electrically connected to the circuit board 31, wherein the circuit board 31 can receive external power through the power supply interface 32, and the start switch 33 can be operated by the user to control the circuit board 31 to provide power to the air pump 20. Specifically, the power supply interface 32 is arranged toward one of the aforementioned openings of the housing 11, so that the external power source can be electrically connected to the power supply interface 32 through the opening, and the start switch 33 is placed through the other aforementioned opening, so that it can be operated by the user. The start switch 33 specifically adopts a button that can be pressed. In other embodiments, the start switch 33 can also be a knob or a rocker switch.

[0029] The external power supply type electric air pump of the utility model can be carried by the user when going out. When the user wants to use the electric air pump, the power supply interface 32 is connected to an external power source. Figure 5 As shown, a mobile power source 90 can be used as the external power source, and connected to the power supply interface 32 through an adapter 91 on a power cord. The power cord can be an accessory extending from the mobile power source 90, or can be an independent component plugged into the mobile power source 90. Figure 2 and Figure 3 As shown, the power supply interface 32 and the adapter 91 can be specifically a USB-C type socket and a USB-C type plug respectively, so that they can be plugged into each other to achieve the effect of transmitting power; in other embodiments, the power supply interface 32 can also adopt other types of connection methods, such as a USB-A type socket, a USB-B type socket, or other connection ports. As long as the power supply interface 32 can be connected to the corresponding adapter 91, the external power source can provide power to the circuit board 31 through the power supply interface 32. The form of the power supply interface 32 is not limited to the preferred embodiment of the utility model.

[0030] When the adapter 91 is plugged into the power supply interface 32, the mobile power supply 90 provides power to the circuit board 31, so that the circuit board 31 is activated and can control the operation of the electric air pump. For example, if it is desired to inflate, the output channel 23 is first connected to the space to be inflated, and then the start switch 33 is operated to control the circuit board 31 to provide power to the air pump 20, thereby driving the air pump 20. After pressing the start switch 33, it is sensed by the circuit board 31, and the circuit board 31 then connects the circuit connected to the cable and the power supply pin 251, so that power can be supplied to the driver 25 through the above circuit, providing pressure to the gas, so that the gas can enter the interior of the chamber 21 from the outside through the input channel 22, and enter the space to be inflated through the output channel 23, thereby achieving the inflation effect.

[0031] If the air is over-inflated or deflation is required in other occasions, the input channel 22 is connected to the space to be deflated, and then the start switch 33 is pressed to control the circuit board 31 to provide power to the air pump 20 to drive the air pump 20. In this way, the gas can enter the interior of the chamber 21 from the space to be deflated through the input channel 22 and be discharged to the outside through the output channel 23 to achieve the deflation effect.

[0032] The external power supply type electric air pump proposed in the utility model can use the external power source to supply power to the circuit board 31 for controlling the operation of the electric air pump through the power supply interface 32 that can be connected to the external power source. Thereby, the electric air pump can omit the design of a built-in battery. When it is carried out and placed in a car, there will be no concerns about high temperature causing battery damage. When passing through customs, there is no need to consider battery-related carrying regulations. Compared with existing electric air pumps with built-in rechargeable batteries, it is more convenient to carry.

[0033] Further, if Figures 2 to 4 As shown, in a preferred embodiment of the present invention, the control module 30 further includes a pressure sensor 34, the pressure sensor 34 is electrically connected to the circuit board 31, and is disposed in a sensing space 40, as shown in FIG. Figure 3 As shown, the sensing space 40 is connected with the space 211 of the chamber 21 of the air pump 20, whereby the pressure sensor 34 can sense the pressure of the sensing space 40 and transmit a pressure information to the circuit board 31 accordingly. Since the sensing space 40 is connected with the space 211 inside the chamber 21, and the space 211 inside the chamber 21 is connected with the space to be deflated or inflated through the input channel 22 or the output channel 23, the circuit board 31 can obtain the pressure value inside the chamber 21 and the pressure value of the space to be deflated or inflated according to the pressure information, and control the inflation or deflation accordingly, or display the pressure value.

[0034] For example, Figures 2 to 4 As shown, the control module 30 may also include a display 35, which is electrically connected to the circuit board 31 and can be observed from the outside of the shell 10. In a preferred embodiment of the utility model, the display 35 is located in an aforementioned opening of the shell 11 and is flush with the surface of the shell 10 so that it can be observed. The circuit board 31 can obtain the internal pressure of the chamber 21 based on the aforementioned pressure information, and control the display 35 to display the internal pressure of the chamber 21 for the user to confirm the current deflation or inflation status.

[0035] In other embodiments, the display 35 may protrude from the surface of the housing 10, or be completely located inside the housing 10, and may be observed through the opening of the shell 11. Alternatively, the shell 10 may also be transparent. The above embodiments may allow the display 35 to be observed by the user from the outside of the housing 10 to achieve a display effect.

[0036] Furthermore, in a preferred embodiment of the present invention, the control module 30 further includes a display switch button 36, which is electrically connected to the circuit board 31 and can be operated to transmit a switch signal to the circuit board 31. The circuit board 31 can perform calculations based on the pressure information and control the display 35 to display different pressure values ​​based on the switch signal. Specifically, pressure can be expressed in different units, such as pound-force per square inch (psi), kilogram force per square centimeter (kgf / cm 2 ), kilopascal (kPa) or bar. After receiving the pressure information from the pressure sensor 34, the circuit board 31 can further calculate the pressure value of the deflated or inflated space in different units through the built-in calculation formula. When using it, the user can operate the display switch button 36 as needed to make the circuit board 31 control the display 35 to display the pressure value of one of the units.

[0037] like Figures 2 to 4As shown, the control module 30 may also include at least one adjusting button 37, and the adjusting button 37 is electrically connected to the circuit board 31 and can be operated to set a target pressure for the circuit board 31. After the circuit board 31 obtains the internal pressure of the chamber 21 according to the aforementioned pressure information, the circuit board 31 can determine whether the internal pressure of the chamber 21, that is, whether the pressure of the space to be deflated or inflated reaches the target pressure, so as to determine whether the circuit board 31 continues to supply power to the air pump 20. Thereby, the user can first operate the adjusting button 37 to pre-set the target value of deflation or inflation on the circuit board 31, and then operate the start switch 33 to drive the air pump 20, and cooperate with the pressure sensor 34 to inflate or deflate the target object to the target pressure.

[0038] In the preferred embodiment of the present invention, the control module 30 includes two adjusting buttons 37, and the display switch button 36 and each of the adjusting buttons 37 are in the form of buttons. The display switch button 36 and the two adjusting buttons 37 are arranged on the circuit board 31, and each passes through an opening of the housing 11 and protrudes out of the housing 10, so as to be pressed and sensed by the circuit board 31. The two adjusting buttons 37 can increase and decrease the target pressure respectively. In other embodiments, the display switch button 36 and the adjusting buttons 37 can also be knobs or other forms, which are not limited to the preferred embodiment of the present invention.

[0039] In addition, if Figure 2 and Figure 3 As shown, the pressure sensor 34 is arranged on the circuit board 31, and the top cover 24 of the air pump 20 is provided with a ring column portion on one side, and the top cover 24 is in contact with the circuit board 31 with the ring column portion, and the sensing space 40 is formed by the ring column portion of the top cover 24 and the circuit board 31. Compared with directly setting the pressure sensor 34 inside the chamber 21, the cable connecting the circuit board 31 to the pressure sensor 34 can be omitted, the installation operation is relatively simple, and subsequently only the circuit board 31 and the air pump 20 need to be separated, and the pressure sensor 34 can be removed from the circuit board 31 for maintenance, which is convenient to operate.

[0040] like Figure 6 As shown in the preferred embodiment of the present invention, the housing 10 is further provided with a receiving space 14 and an outer cover 15. The receiving space 14 is located at the bottom of the housing 10 and is separated from the air pump 20 and the control module 30. The receiving space 14 is connected to the outside of the housing 10 through an opening. The electric air pump further includes an air needle 50. Figure 5 As shown, the inflation needle 50 can be connected to the input channel 22 or the output channel 23, and can be used to inflate and deflate various balls. Figure 6As shown, the inflation needle 50 can be accommodated in the accommodating space 14 when not in use, and the outer cover 15 is combined with the opening of the accommodating space 14 to confine the inflation needle 50 in the accommodating space 14 for storage, thereby preventing the inflation needle 50 from falling and making it convenient to carry the inflation needle 50 together.

[0041] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any person with ordinary knowledge in the technical field can make equivalent embodiments by partial changes or modifications to the technical content disclosed in the utility model without departing from the scope of the technical solution of the utility model, and they still fall within the scope of the technical solution of the utility model without departing from the technical solution of the utility model.

Claims

1. An external power supply electric air pump, characterized in that: Include: a housing; an air pump disposed in the housing and comprising a chamber, an input channel and an output channel communicating the interior of the chamber with the exterior of the housing, the air pump being electrically driven to allow gas to enter the interior of the chamber through the input channel and flow out from the output channel; as well as A control module is disposed in the housing and includes a circuit board electrically connected to the air pump; a power supply interface electrically connected to the circuit board and capable of being connected to an external power source to provide power to the circuit board; as well as A start switch connected to the circuit board and capable of being operated to control the circuit board to provide power to the air pump, thereby driving the air pump; The control module includes a pressure sensor, which is electrically connected to the circuit board and arranged on the circuit board, and is arranged in a sensing space. The air pump includes a top cover, which abuts against the circuit board. The sensing space is formed by the top cover of the air pump and the circuit board, and is connected to the interior of the chamber of the air pump. The sensor can sense the pressure in the sensing space and transmit pressure information to the circuit board accordingly. The pressure sensor is arranged on the circuit board.

2. The external power supply type electric air pump according to claim 1, characterized in that: The control module includes a display, which is electrically connected to the circuit board and can be observed from the outside of the housing. The circuit board can control the display according to the pressure information so that the display displays the internal pressure of the chamber.

3. The external power supply type electric air pump according to claim 2, characterized in that: The control module includes a display switching button, which is electrically connected to the circuit board and can be operated to transmit a switching signal to the circuit board. The circuit board can calculate pressure values ​​in different units based on the pressure information and control the display to display one of the pressure values ​​in one unit based on the switching signal.

4. The external power supply type electric air pump according to any one of claims 1 to 3, characterized in that: The control module includes at least one adjusting button, which is electrically connected to the circuit board and can be operated to set a target pressure for the circuit board. The circuit board can obtain the internal pressure of the chamber based on the pressure information and determine whether the internal pressure of the chamber reaches the target pressure to decide whether to continue to supply power to the air pump.

5. The external power supply type electric air pump according to any one of claims 1 to 3, characterized in that: The shell is provided with a accommodating space and an outer cover. The accommodating space is separated from the air pump and the control module and is connected to the outside of the shell through an opening. The electric air pump also includes an air needle, which can be connected to one of the input channel and the output channel and can be accommodated in the accommodating space. The outer cover is detachably combined with the opening, so as to confine the air needle in the accommodating space.

Images