Constant-pressure alarm inflator

Abstract

The utility model discloses a constant pressure alarm inflator, which relates to the inflator field and comprises a base, the top end of the base is provided with a cylinder body, an air storage cylinder and an air outlet pipe from right to left in sequence, the bottom ends of the cylinder body, the air storage cylinder and the air outlet pipe penetrate through the top end of the base and are provided with a plurality of air delivery pipes, and check valves are arranged between the air outlet pipe and the air delivery pipes; a rubber bowl is arranged in the cylinder body, a first piston rod is arranged at the top end of the rubber bowl, a second piston rod is arranged in the first piston rod, a handle is arranged at the top end of the second piston rod, and the first piston rod and the second piston rod are connected through a limiting piece. An internal thread is arranged in the top end of the air cylinder, a matched constant pressure piece is arranged on one side of the internal thread, and an alarm box is arranged on the side, close to the top end of the air outlet pipe, of the base. The inflating device can meet the requirements of different users for comfort during inflating, and can buzz to remind the users to stop inflating when the pressure reaches a critical value, so that the safety of the users is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of air pumps, and more specifically, to a constant-pressure alarm air pump. Background Art

[0002] An air pump, also known as an air compressor, is a tool that inhales air into a storage area through a pumping operation and then injects or replenishes the air required for various tires and some balls through a pushing method. It is essentially a simple mechanical device that works based on the principle of air pressure difference. With the increasing awareness of environmental protection among people, more and more people choose to ride bicycles as a means of travel. As an essential tool for bicycle maintenance, an air pump can ensure that the bicycle tires maintain an appropriate air pressure, thereby reducing the riding resistance, improving the riding efficiency, and promoting green travel. During the inflation process, users need to constantly stop to check the air pressure. Too much or too little air pressure will affect the comfort, safety, and service life of the tires, posing certain potential safety hazards. Users of different heights cannot maintain a natural posture when using an air pump. Excessive bending or raising of the arms will cause greater fatigue. However, the existing constant-pressure alarm air pumps on the market can only automatically alarm to prompt users to stop inflating, and cannot improve the comfort of users.

[0003] For example, the Chinese patent with the authorization announcement number CN211116460U discloses a new type of air pump, which includes an inflation mechanism, an alarm mechanism, and a pressure relief mechanism. The inflation mechanism includes an air delivery pipe, a cylinder body, a piston rod, and a handle. The alarm mechanism includes a protective box, a battery box, a rechargeable battery, and a battery cover. The protective box is fixedly installed on the right side of the cylinder body, and the battery box is nested on the front of the protective box.

[0004] Although this constant-pressure alarm air pump can automatically alarm to prompt users to stop inflating, for users of different heights, they cannot maintain a natural posture when using the air pump. Excessive bending or raising of the arms will cause greater fatigue.

[0005] Regarding the problems in the related art, no effective solution has been proposed yet. Content of the Utility Model

[0006] Regarding the problems in the related art, the present utility model proposes a constant-pressure alarm air pump to overcome the above-mentioned technical problems existing in the existing related art.

[0007] To this end, the specific technical solution adopted by the present utility model is as follows:

[0008] A constant-pressure alarm air pump includes a base. At the top of the base, a cylinder body, an air storage cylinder, and an air outlet pipe are sequentially arranged from right to left. At the bottom of the cylinder body, the air storage cylinder, and the air outlet pipe, several air pipes penetrate through the top of the base, and a check valve is arranged between the air outlet pipe and the air pipes; an elastic bowl is arranged inside the cylinder body, a first piston rod is arranged at the top of the elastic bowl, a second piston rod is arranged inside the first piston rod, a handle is arranged at the top of the second piston rod, and the first piston rod and the second piston rod are connected by a limiting member. A storage groove matching the limiting member is arranged at the top of the cylinder body; internal threads are arranged inside the top of the air storage cylinder, and a constant-pressure member matching the internal threads is arranged on one side of the internal threads. An alarm box is arranged on the top side of the base close to the air outlet pipe, and an alarm mechanism is arranged inside the alarm box.

[0009] Further, in order to prevent the base from separating from the ground when the handle is pulled upward and avoid affecting the use of the air pump, a rotating shaft is inserted through one side of the base close to the cylinder body, and foot pedals are arranged at both ends of the rotating shaft.

[0010] Further, in order to be able to flexibly adjust the overall length of the piston rod according to the heights of different people, ensure that users maintain a natural posture when using the air pump, reduce the fatigue caused by bending over or raising the arm, and improve the comfort of using the air pump, a notch matching the limiting member is opened on one side of the top of the first piston rod; a number of limiting grooves matching the limiting member are opened on the outer circumference of the second piston rod from top to bottom; the limiting member includes support columns symmetrically arranged on the outer side of the top of the first piston rod, a rotating shaft is arranged in the middle of the support columns, and an active member matching the first piston rod and the second piston rod is connected between the two rotating shafts; the active member includes a long plate arranged between the rotating shafts, a long rod matching the limiting groove is arranged at the top of the long plate, and a fixing rod matching the notch is arranged at the bottom of the long plate.

[0011] Further, in order to be able to flexibly adjust the air storage capacity of the air storage cylinder according to the required air pressure of different tires and set corresponding alarm critical values to ensure that it always remains within a safe and appropriate air pressure range during the inflation process, the constant-pressure member includes a compression rod arranged inside the air storage cylinder, an external thread meshing with the internal thread is arranged on the outer side of the bottom end of the compression rod, a sealing gasket is arranged on the outer side of the middle of the compression rod, and a gear is arranged on the outer side of the top end of the compression rod.

[0012] Further, in order to prompt the user to stop inflating when the pressure reaches through a beeping sound, ensure that the air is not pressed by hand every time to check whether the inflation is sufficient, and prevent the tire from bursting due to excessive inflation, the alarm mechanism includes a pressure sensor arranged at the bottom end inside the alarm box and matching the air pipe, an alarm is arranged at the top of the pressure sensor, a storage battery is arranged at the top of the alarm, and a buzzer is arranged at the top of the storage battery.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1) With the combined action of the cylinder body, air storage cylinder, air outlet pipe, air delivery pipe, check valve, limit member, constant pressure member and alarm mechanism, the utility model can meet the comfort requirements of different users when inflating, and at the same time can ensure that it always remains within a safe and appropriate air pressure range during the inflation process, and emits a beeping sound to remind the user to stop inflating when the pressure reaches the critical value, thus ensuring the safety of the user.

[0015] 2) Under the action of the limit member, the overall length of the piston rod can be flexibly adjusted according to the height of different people, ensuring that the user maintains a natural posture when using the air pump, reducing the fatigue caused by bending down or raising the arm, and improving the comfort of using the air pump.

[0016] 3) With the combined action of the constant pressure member and the alarm mechanism, the air storage capacity of the air storage cylinder can be flexibly adjusted according to the air pressure requirements of different tires, and the corresponding alarm critical value can be set. When the pressure reaches, the user is reminded to stop inflating through a beeping sound, ensuring that the user does not have to press by hand every time to check whether the inflation is sufficient, and ensuring that it always remains within a safe and appropriate air pressure range during the inflation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 FIG. 1 is a schematic structural diagram of a constant pressure alarm air pump according to an embodiment of the present utility model;

[0019] Figure 2 FIG. 2 is a schematic cross-sectional view of a constant pressure alarm air pump according to an embodiment of the present utility model;

[0020] Figure 3 FIG. 3 is a schematic cross-sectional view of a constant pressure alarm air pump from another angle according to an embodiment of the present utility model;

[0021] Figure 4 is Figure 3 a partial enlarged view of part A in FIG.

[0022] In the figure:

[0023] 1. Base; 2. Cylinder body; 3. Air storage cylinder; 4. Air outlet pipe; 5. Air delivery pipe; 6. Check valve; 7. Rubber bowl; 8. Piston rod 1; 801. Notch; 9. Piston rod 2; 901. Limit groove; 10. Handle; 11. Limiting member; 1101. Support column; 1102. Rotating shaft; 1103. Movable member; 1104. Long board; 1105. Long rod; 1106. Fixed rod; 12. Storage groove; 13. Internal thread; 14. Constant pressure member; 1401. Compression rod; 1402. External thread; 1403. Sealing gasket; 1404. Gear; 15. Alarm box; 16. Alarm mechanism; 17. Rotating shaft; 18. Foot pedal ring; 19. Pressure sensor; 20. Alarm; 21. Battery; 22. Buzzer. Detailed implementation manners

[0024] To further illustrate each embodiment, the present utility model provides drawings. These drawings are a part of the disclosure of the present utility model, mainly used to illustrate the embodiments, and can be combined with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0025] According to an embodiment of the present utility model, a constant pressure alarm air pump is provided.

[0026] Now, the present utility model will be further described in combination with the drawings and specific implementation manners. As Figures 1-4 shown, the constant pressure alarm air pump according to an embodiment of the present utility model includes a base 1. The top of the base 1 is sequentially provided with a cylinder body 2, an air storage cylinder 3, and an air outlet pipe 4 from right to left. The bottom ends of the cylinder body 2, the air storage cylinder 3, and the air outlet pipe 4 penetrate through the top of the base 1 and are provided with a plurality of air delivery pipes 5. A check valve 6 is provided between the air outlet pipe 4 and the air delivery pipes 5. Inside the cylinder body 2, there is a rubber bowl 7. The top of the rubber bowl 7 is provided with a piston rod 1. Inside the piston rod 1, there is a piston rod 2. The top of the piston rod 2 is provided with a handle 10. The piston rod 1 and the piston rod 2 are connected by a limiting member 11. The top of the cylinder body 2 is provided with a storage groove 12 that cooperates with the limiting member 11. Inside the top of the air storage cylinder 3, there is an internal thread 13. On one side of the internal thread 13, there is a cooperating constant pressure member 14. On the top side of the base 1 near the air outlet pipe 4, there is an alarm box 15. Inside the alarm box 15, there is an alarm mechanism 16.

[0027] With the above technical solutions, the utility model can meet the comfort requirements of different users when inflating, and at the same time ensure that it always remains within a safe and appropriate air pressure range during the inflation process. When the pressure reaches the critical value, it emits a beeping sound to remind the user to stop inflating, thus ensuring the safety of the user. Under the action of the limiting member 11, the overall length of the piston rod can be flexibly adjusted according to the height of different people, ensuring that the user maintains a natural posture when using the air pump, reducing the fatigue caused by bending down or raising the arm, and improving the comfort of using the air pump. Under the combined action of the constant pressure member 14 and the alarm mechanism 16, the air storage capacity of the air storage cylinder can be flexibly adjusted according to the air pressure requirements of different tires, and the corresponding alarm critical value is set. The user is reminded to stop inflating when the pressure reaches by a beeping sound, ensuring that the air is not checked manually every time to ensure that it always remains within a safe and appropriate air pressure range during the inflation process.

[0028] In one embodiment, for the base 1, a rotating shaft 17 is inserted through one side of the base 1 close to the cylinder body 2, and foot pedals 18 are arranged at both ends of the rotating shaft, so as to prevent the base 1 from separating from the ground when the handle 10 is pulled upward, avoiding affecting the use of the air pump.

[0029] In one embodiment, for the limiting member 11, a notch 801 matching the limiting member 11 is formed on one side of the top end of the piston rod one 8; a plurality of limiting grooves 901 matching the limiting member 11 are formed on the outer circumference of the piston rod two 9 from top to bottom; the limiting member 11 includes support columns 1101 symmetrically arranged on the outer side of the top end of the piston rod one 8, a rotating shaft 1102 is arranged in the middle of the support column 1101, and an active member 1103 matching the piston rod one 8 and the piston rod two 9 is connected between the two groups of rotating shafts 1102; the active member 1103 includes a long plate 1104 arranged between the rotating shafts 1102, a long rod 1105 matching the limiting groove 901 is arranged at the top end of the long plate 1104, and a fixing rod 1106 matching the notch 801 is arranged at the bottom end of the long plate 1104, so that the overall length of the piston rod can be flexibly adjusted according to the height of different people, ensuring that the user maintains a natural posture when using the air pump, reducing the fatigue caused by bending down or raising the arm, and improving the comfort of using the air pump.

[0030] The working principles of the first piston rod 8, the second piston rod 9 and the limiting member 11 are as follows: In the initial state, the limiting member 11 is located within the storage groove 12. When using the air pump, the first piston rod 8 and the second piston rod 9 are lifted by the handle 10, and then a force is applied to press the long board 1104. At this time, under the combined action of the rotating shaft 1102 and the support column 1101, the long board 1104 rotates stably. At this time, the long rod 1105 disengages from one of the limiting grooves 901, and the fixed rod 1106 enters the notch 801. According to the different heights of the users, the second piston rod 9 is adjusted to an appropriate position, and then a force is applied to press the long board 1104 again. The fixed rod 1106 disengages from the notch 801, and the long rod 1105 enters one of the limiting grooves 901 for limiting, thus realizing the adjustment of the length of the air pump.

[0031] In one embodiment, for the constant pressure member 14, the constant pressure member 14 includes a compression rod 1401 disposed inside the air storage cylinder 3. An external thread 1402 meshing with the internal thread 13 is disposed on the outer side of the bottom end of the compression rod 1401. A sealing gasket 1403 is disposed on the outer side of the middle portion of the compression rod 1401. A gear 1404 is disposed on the outer side of the top end of the compression rod 1401. Thus, the air storage capacity of the air storage cylinder 3 can be flexibly adjusted according to the air pressure requirements of different tires, and corresponding alarm critical values are set to ensure that it always remains within a safe and appropriate air pressure range during the inflation process.

[0032] It should be explained that the sealing gasket 1403 is made of rubber. Rubber is a material with elasticity and flexibility, usually made of natural rubber or synthetic rubber. Rubber has good elasticity and can return to its original shape after being stressed. Rubber materials also have characteristics such as anti-aging, heat resistance, oil resistance, and chemical corrosion resistance, which can make the entire air storage cylinder 3 form a closed space. This is prior art and will not be elaborated here.

[0033] The working principle of the constant pressure member 14 is as follows: In the initial state, the compression rod 1401 is rotated. Under the combined action of the internal thread 13, the external thread 1402 and the gear 1404, the compression rod 1401 can be adjusted to the required air pressure height. Under the action of the sealing gasket 1403, it can be ensured that the interior of the entire air storage cylinder 3 is in a sealed environment during the entire rotation process.

[0034] In one embodiment, for the alarm mechanism 16, the alarm mechanism 16 includes a pressure sensor 19 disposed at the bottom end inside the alarm box 15 and cooperating with the air delivery pipe 5. An alarm 20 is disposed at the top end of the pressure sensor 19. A storage battery 21 is disposed at the top end of the alarm 20. A buzzer 22 is disposed at the top end of the storage battery 21. Thus, the user is prompted by the buzzer sound to stop inflating when the pressure is reached, ensuring that it is not necessary to check whether the inflation is sufficient by pressing with the hand each time during inflation, and preventing the tire from bursting due to over-inflation.

[0035] It should be noted that the pressure sensor 19 is a device for measuring the pressure of liquids or gases, and generally consists of several main components, namely a sensing element, a housing, circuit components, an output interface, and a calibration device; the sensing element is the core part of the pressure sensor, usually composed of piezoelectric materials, strain gauges, diaphragms, etc., and can sense pressure changes and convert them into electrical signals; the housing protects the sensing element, usually made of metal or plastic materials, with good sealing performance to prevent the leakage of liquids or gases; the circuit components include an amplifier and a signal processing circuit, which are used to amplify and process the weak electrical signals generated by the sensing element so as to output signals that meet the requirements; the output interface is used to transmit the processed signals to external devices, which can usually be analog signals or digital signals; the calibration device is used to calibrate the pressure sensor to ensure the accuracy and reliability of its measurement; the alarm 20 is a device for detecting specific events and giving alarms, and mainly consists of a sensor, a control unit, an alarm output device, a power supply, and a housing; the sensor is the core part of the alarm, responsible for detecting specific physical quantities or environmental changes, such as temperature sensors for fire alarms, smoke sensors, gas sensors such as carbon monoxide, natural gas, etc.; the control unit is used to process the signals transmitted by the sensor and analyze whether the alarm conditions are met; the control unit usually includes a microcontroller or a processor; once the alarm output device detects an abnormal situation, the control unit will trigger the alarm output device, and common output methods include sound alarms such as buzzers or speakers, and visual alarms such as LED lights to attract attention; the power supply provides the required electrical energy for the alarm, which may be battery-powered or connected to a power cord; the housing protects the internal components, usually made of durable plastic or metal materials, and is designed to be easy to install and use; the buzzer 22 is an electronic device for emitting sound signals, and the main components of the buzzer usually include a sound source element, a housing, circuit components, and an input port; the sound source element is the core part of the buzzer, usually a piezoelectric ceramic or an electromagnetic vibrator, responsible for converting electrical signals into sound waves; the housing is used to protect the internal components, and the housing material is generally plastic or metal, and the design also helps the propagation of sound; the circuit components include resistors, capacitors, and other electronic components, which are used to control the working state and sound frequency of the buzzer; the input port is used to connect the power supply and the signal source, usually pins or terminals, so as to transmit electrical signals to the buzzer; the electrical connection between the pressure sensor 19, the alarm 20, the storage battery 21, and the buzzer 22 is prior art and will not be elaborated here.

[0036] To facilitate the understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below.

[0037] In actual application, in the initial state, the user lifts the first piston rod 8 and the second piston rod 9 through the handle 10. Under the action of the limiting member 11, the second piston rod 9 is adjusted to adapt to the user's height. Subsequently, the air outlet pipe 4 is connected to the valve of the tire. The user holds the handle 10 with hand and steps on the foot pedal ring 18 with foot at the same time. The foot pedal ring 18 can prevent the base 1 from separating from the ground when the handle 10 is pulled upward, thus avoiding affecting the use of the air pump. Then, the user first pulls the handle 10 upward forcefully and then presses the handle 10 downward. At this time, the check valve 6 at the connection of the air outlet pipe 4 and the air delivery pipe is opened, and the air pressure passes through the cylinder body 2, the air storage cylinder 3, the air delivery pipe 5, the check valve 6 and the air outlet pipe 4 into the tire. The pressure sensor 19 senses the pressure during inflation. When the pressure is high, the alarm 20 will control the buzzer 22 to emit a beeping sound, prompting the user to stop inflating, ensuring that the user does not need to press by hand every time to check whether the inflation is sufficient and preventing the tire from bursting due to excessive inflation.

[0038] The working principles of the first piston rod 8, the second piston rod 9, the limiting member 11, the constant pressure member 14 and the alarm mechanism 16 are as shown above.

[0039] In summary, by virtue of the above technical solutions of the present utility model, the present utility model, under the combined action of the cylinder body 2, the air storage cylinder 3, the air outlet pipe 4, the air delivery pipe 5, the check valve 6, the limiting member 11, the constant pressure member 14 and the alarm mechanism 16, can meet the comfort requirements of different users during inflation, and at the same time can ensure that the air pressure is always maintained within a safe and appropriate range during the inflation process, and emits a beeping sound to remind the user to stop inflating when the pressure reaches the critical value, ensuring the safety of the user; under the action of the limiting member 11, the overall length of the piston rod can be flexibly adjusted according to the height of different people, ensuring that the user maintains a natural posture when using the air pump, reducing the fatigue caused by bending over or raising the arm, and improving the comfort of using the air pump; under the combined action of the constant pressure member 14 and the alarm mechanism 16, the air storage capacity of the air storage cylinder can be flexibly adjusted according to the air pressure requirements of different tires, and the corresponding alarm critical value is set, and the buzzer sound is used to prompt the user to stop inflating when the pressure reaches, ensuring that the user does not need to press by hand every time to check whether the inflation is sufficient and ensuring that the air pressure is always maintained within a safe and appropriate range during the inflation process.

[0040] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection" and the like shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0041] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A constant-pressure alarm inflator, comprising a base (1), characterized in that, At the top of the base (1), a cylinder body (2), an air storage cylinder (3), and an air outlet pipe (4) are sequentially arranged from right to left. At the bottom of the cylinder body (2), the air storage cylinder (3), and the air outlet pipe (4), a plurality of air delivery pipes (5) penetrate through the top of the base (1), and a check valve (6) is arranged between the air outlet pipe (4) and the air delivery pipes (5). Inside the cylinder body (2), a rubber bowl (7) is arranged. At the top of the rubber bowl (7), a first piston rod (8) is arranged. Inside the first piston rod (8), a second piston rod (9) is arranged. At the top of the second piston rod (9), a handle (10) is arranged. The first piston rod (8) and the second piston rod (9) are connected by a limiting member (11). At the top of the cylinder body (2), a storage groove (12) is arranged which is matched with the limiting member (11). Inside the top of the air storage cylinder (3), an internal thread (13) is arranged. On one side of the internal thread (13), a pressure setting member (14) which is matched is arranged. On the top side of the base (1) close to the air outlet pipe (4), an alarm box (15) is arranged. Inside the alarm box (15), an alarm mechanism (16) is arranged.

2. The constant-pressure alarm air pump according to claim 1, wherein On one side of the base (1) close to the cylinder body (2), a rotating shaft (17) is inserted. At both ends of the rotating shaft, foot pedals (18) are arranged.

3. The constant-pressure alarm air pump according to claim 1, characterized in that, On one side of the top of the first piston rod (8), a notch (801) which is matched with the limiting member (11) is opened.

4. The constant-pressure alarm air pump according to claim 3, characterized in that, On the outer circumference of the second piston rod (9), a plurality of limiting grooves (901) which are matched with the limiting member (11) are opened from top to bottom.

5. The constant-pressure alarm air pump according to claim 4, characterized in that, The limiting member (11) includes support columns (1101) symmetrically arranged on the outer side of the top of the first piston rod (8). In the middle of the support columns (1101), a rotating shaft (1102) is arranged. Between the two groups of rotating shafts (1102), an active member (1103) which is matched with the first piston rod (8) and the second piston rod (9) is connected.

6. The constant-pressure alarm air pump according to claim 5, characterized in that, The active member (1103) includes a long plate (1104) arranged between the rotating shafts (1102). At the top of the long plate (1104), a long rod (1105) which is matched with the limiting groove (901) is arranged. At the bottom of the long plate (1104), a fixing rod (1106) which is matched with the notch (801) is arranged.

7. The constant-pressure alarm inflator according to claim 1, characterized in that, The pressure setting member (14) includes a compression rod (1401) arranged inside the air storage cylinder (3). On the outer side of the bottom of the compression rod (1401), an external thread (1402) which is meshed with the internal thread (13) is arranged. On the outer side of the middle of the compression rod (1401), a sealing gasket (1403) is arranged. On the outer side of the top of the compression rod (1401), a gear (1404) is arranged.

8. The constant-pressure alarm inflator according to claim 1, characterized in that, The alarm mechanism (16) includes a pressure sensor (19) disposed at the bottom end inside the alarm box (15) and cooperating with the gas transmission pipe (5). At the top of the pressure sensor (19), there is an alarm (20). At the top of the alarm (20), there is a storage battery (21). At the top of the storage battery (21), there is a buzzer (22).

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