Inflator pump with pressure relief protection structure

Abstract

The utility model discloses an inflator pump with a pressure relief protection structure. The inflator pump comprises a pump body, an upper cover, a buckling groove, a safety buckle and the pressure relief protection structure. The upper cover and the pump body form a sealed inflation chamber, and an inflation nozzle is arranged at the bottom; a buckling groove and a safety buckle enhance the connection strength of the upper cover and the pump body and prevent the upper cover from popping up due to overlarge air pressure; the pressure relief protection structure is composed of a pressure relief opening, a pressure relief nut, a pressure relief noise reduction sponge, a pressure relief spring and a pressure relief sealing plug, and safe pressure relief under abnormal air pressure is achieved through mechanical design. The method can effectively avoid the overhigh air pressure risk caused by the failure of ECU control logic, remarkably improves the safety and reliability of equipment, and is suitable for a massage air bag and other scenes needing to be inflated for a long time.

Description

Technical Field

[0001] This utility model relates to the technical field of air pumps, and in particular to an air pump with a pressure relief protection structure. Background Technology

[0002] In modern inflatable devices, air pumps are widely used as core components in various scenarios, such as massage devices, medical devices, and inflation devices. However, most air pumps on the market currently have certain safety hazards in their design, especially in the absence of pressure relief components. If the electronic control unit (ECU) of the entire machine fails, the internal air pressure of the inflation chamber may become too high, potentially causing the massage air bag or other inflatable objects to burst. This situation not only affects the normal use of the device but may also pose a potential safety threat to the user. In existing technologies, although some air pumps attempt to mitigate this problem by adding electronic protection measures, the electronic components themselves may be prone to failure or malfunction, and cannot completely prevent accidents caused by excessive air pressure. Therefore, there is an urgent need for a design scheme that can provide additional safety protection at the mechanical level to ensure that excessive air pressure can be effectively released in extreme situations, thereby protecting the safety of the device and the user. This invention aims to solve the above problems by introducing a mechanical pressure relief protection structure to provide more reliable safety protection for the air pump, while improving the overall stability and service life of the device. Utility Model Content

[0003] The purpose of this invention is to provide an air pump with a pressure relief protection structure to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An air pump with a pressure relief protection structure includes a pump body and a top cover structure, a snap-fit ​​groove and a safety buckle design, and a pressure relief protection structure. Wherein:

[0006] The pump body is the core component of the air pump. A sealed top cover is fixedly installed on its top, forming a sealed inflation chamber with the pump body for storing and discharging gas. An inflation nozzle, communicating with the bottom of the top cover, is used to inject gas into the target object. Furthermore, the volume of the inflation chamber is determined by the structural dimensions of the pump body and the top cover to meet the gas requirements of specific application scenarios.

[0007] Specifically, to prevent the top cover from violently expanding and popping out when the internal air pressure abnormally increases, the air pump has corresponding fastening grooves on the top surface of the top cover and the bottom of the pump body extending outwards. After the top cover is fixed to the pump body, multiple safety buckles are additionally provided, with both ends of the safety buckles abutting against the corresponding fastening grooves on the top cover and the pump body, respectively. The design of the safety buckles enhances the connection strength between the top cover and the pump body through physical connection, thereby avoiding safety hazards caused by excessive air pressure.

[0008] Furthermore, the pressure relief protection structure is one of the core innovations of this utility model, and its specific implementation is as follows:

[0009] The pressure relief protection structure includes a pressure relief port, a pressure relief nut, a pressure relief and noise-absorbing sponge, a pressure relief spring, and a pressure relief sealing plug. The pressure relief port is located on the top surface of the upper cover and is an upwardly extending, integrally molded structure with internal threads on its inner wall. The pressure relief nut is a through-hole structure, fixed to the inner wall of the pressure relief port via a threaded connection, and a porous pressure relief and noise-absorbing sponge is fixedly connected to its inner wall. The function of the pressure relief and noise-absorbing sponge is to reduce the noise generated during gas flow through its porous structure, thereby optimizing the user experience.

[0010] Specifically, the pressure relief spring is located at the bottom of the pressure relief nut, with its two ends abutting against the top of the pressure relief sealing plug and the bottom of the pressure relief nut, respectively. Under normal operating conditions, the pressure relief sealing plug is tightly pressed against the gas passage between the pressure relief port and the inflation chamber by the pressure of the pressure relief spring, maintaining a closed state. When the gas pressure in the inflation chamber exceeds the preset pressure value of the pressure relief spring, the gas overcomes the pressure of the pressure relief spring, pushing open the pressure relief sealing plug and allowing the gas to escape through the pressure relief port, thereby achieving the pressure relief function.

[0011] Furthermore, the spring constant of the pressure relief spring is precisely set according to the requirements of the actual application scenario to ensure that the pressure relief sealing plug can be opened in time when the air pressure rises abnormally. The pressure relief sealing plug is made of a material with high wear resistance and high sealing performance to ensure that it can maintain good sealing performance during long-term use.

[0012] Specifically, the internal thread of the pressure relief port and the external thread of the pressure relief nut are precision-machined to ensure a tight and stable connection between them. The thickness and porosity of the pressure relief and sound-absorbing sponge are optimized to reduce noise without affecting gas flow efficiency.

[0013] Furthermore, the working principle of the air pump is as follows:

[0014] S1: Under normal use, the air pressure in the inflation chamber is low. The pressure relief sealing plug remains closed under the pressure of the pressure relief spring to prevent gas leakage.

[0015] S2: Once the air pressure in the inflation chamber rises abnormally and exceeds the preset pressure value of the pressure relief spring, the gas overcomes the pressure of the pressure relief spring, pushes open the pressure relief sealing plug, and the gas is discharged through the pressure relief port, thereby effectively reducing the internal air pressure.

[0016] S3: After the pressure relief is completed, the gas pressure drops to the normal range, and the pressure relief sealing plug returns to the closed state under the pressure of the pressure relief spring, ensuring that the air pump resumes normal operation.

[0017] Specifically, the air pump, through the aforementioned mechanical safety structure design, achieves safety protection against excessive air pressure in the event of ECU control logic failure. The cooperation between the safety latch and the latching groove further enhances the overall safety of the equipment, ensuring user safety even in extreme circumstances.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] By adding a mechanical safety structure, including a pressure relief port, pressure relief nut, pressure relief noise-absorbing sponge, pressure relief spring, and pressure relief sealing plug, a safe pressure relief function is achieved when the internal air pressure of the air pump is abnormal. The pressure relief noise-absorbing sponge reduces the noise generated during pressure relief through its porous structure, improving the user experience. The design of the safety buckle and the snap-fit ​​groove enhances the connection strength between the top cover and the pump body through a physical connection, avoiding safety hazards caused by excessive air pressure. In addition, the elastic coefficient of the pressure relief spring and the material selection of the pressure relief sealing plug are precisely designed to ensure the reliability and durability of the device.

[0020] In particular, this invention is suitable for scenarios requiring prolonged inflation, such as massage airbags, and possesses significant technical advantages and application value. The air pump, through its mechanical safety structure design, significantly improves the safety and reliability of the device, providing users with a more reassuring user experience. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of this utility model ignoring the top cover;

[0023] Figure 3 This is a cross-sectional view of the present invention.

[0024] Attached image annotations:

[0025] 1. Pressure relief port; 2. Pressure relief nut; 3. Pressure relief and noise reduction sponge; 4. Pressure relief spring; 5. Pressure relief sealing plug; 6. Inflation chamber; 7. Safety buckle; 8. Fastening groove; 9. Top cover; 10. Pump body. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When the number of elements is referred to as "multiple," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings:

[0030] An air pump with a pressure relief protection structure, the specific implementation of which is described in conjunction with the attached... Figure 1 To be continued Figure 3 Detailed explanation follows. (Attached) Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention, attached. Figure 2 To omit the internal structure diagram after the top cover is attached. Figure 3 This is a sectional view, clearly showing the structure and assembly relationship of the various components inside the air pump. The following will provide a comprehensive description, from the overall structure to the specific operating principle, using the components corresponding to the numbers in the attached diagram.

[0031] The air pump of this invention includes a pump body 10 and a top cover 9. The top cover 9 is installed on top of the pump body 10 in a sealed manner, and the two together form a sealed air chamber 6. The design volume of the air chamber 6 is determined by the geometric dimensions of the pump body 10 and the top cover 9 to meet the gas storage and output requirements of the target application scenario. An air inlet is provided at the bottom of the top cover 9, which communicates with the top cover 9 and is used to deliver gas into the target object, such as a massage air bag or other devices that require inflation. To prevent the top cover 9 from expanding violently or even popping out due to excessive internal air pressure, fastening grooves 8 are provided on the top surface of the top cover 9 and the bottom of the pump body 10 extending outward. These fastening grooves 8 are correspondingly positioned and evenly distributed. After the top cover 9 is fixed to the pump body 10, multiple safety buckles 7 are additionally provided. The two ends of these safety buckles 7 abut against the fastening grooves 8 on the top cover 9 and the pump body 10, respectively. The safety buckle 7 enhances the connection between the top cover 9 and the pump body 10 through a physical connection, thereby avoiding safety hazards caused by excessive air pressure.

[0032] The core innovation lies in the design of the pressure relief protection structure, which mainly includes a pressure relief port 1, a pressure relief nut 2, a pressure relief and noise-absorbing sponge 3, a pressure relief spring 4, and a pressure relief sealing plug 5. The pressure relief port 1 is located on the top surface of the upper cover 9 and is an upward-extending, one-piece molded structure with internal threads on its inner wall. The pressure relief nut 2 is a through-hole structure, fixed to the inner wall of the pressure relief port 1 via a threaded connection, and a porous pressure relief and noise-absorbing sponge 3 is fixedly connected to its inner wall. The function of the pressure relief and noise-absorbing sponge 3 is to reduce noise generated during gas flow through its porous structure, while ensuring smooth gas flow. The pressure relief spring 4 is located at the bottom of the pressure relief nut 2, with its two ends abutting against the top of the pressure relief sealing plug 5 and the bottom of the pressure relief nut 2, respectively. Under normal operating conditions, the pressure relief sealing plug 5 is tightly pressed against the gas passage between the pressure relief port 1 and the inflation chamber 6 by the pressure of the pressure relief spring 4, maintaining a closed state. When the air pressure in the inflation chamber 6 exceeds the preset pressure value of the pressure relief spring 4, the gas overcomes the pressure of the pressure relief spring 4 and pushes open the pressure relief sealing plug 5, allowing the gas to be discharged through the pressure relief port 1, thereby achieving the pressure relief function. After the pressure relief is completed, the gas pressure drops to the normal range, and the pressure relief sealing plug 5 returns to the closed state under the pressure of the pressure relief spring 4, ensuring that the air pump resumes normal operation.

[0033] The specific operation process of the air pump is as follows: S1 Under normal use, the pump body 10 generates gas through an internal mechanical or electric drive device and delivers it to the inflation chamber 6. At this time, the air pressure in the inflation chamber 6 is low, and the pressure relief sealing plug 5 tightly presses against the gas passage between the pressure relief port 1 and the inflation chamber 6 under the pressure of the pressure relief spring 4 to prevent gas leakage. S2 Once the air pressure in the inflation chamber 6 rises abnormally, for example, due to the failure of the whole machine ECU control logic causing continuous gas input, the air pressure in the inflation chamber 6 will gradually increase. When the air pressure exceeds the preset pressure value of the pressure relief spring 4, the gas overcomes the pressure of the pressure relief spring 4 and pushes open the pressure relief sealing plug 5, allowing the gas to be discharged through the pressure relief port 1. S3 During the depressurization process, the pressure relief and noise reduction sponge 3 reduces the noise generated during gas flow through its porous structure, optimizing the user experience. As the gas is discharged, the air pressure in the inflation chamber 6 gradually drops to the normal range, and the pressure relief sealing plug 5 returns to the closed state under the pressure of the pressure relief spring 4, ensuring that the air pump resumes normal operation.

[0034] Furthermore, the elastic coefficient of the pressure relief spring 4 is precisely set according to the needs of the actual application scenario. For example, in the scenario of application in massage airbags, the elastic coefficient of the pressure relief spring 4 is designed to open the pressure relief sealing plug 5 in time when the air pressure reaches a certain threshold, thereby avoiding the risk of the massage airbag being burst by excessive air pressure. The pressure relief sealing plug 5 is made of a material with high wear resistance and high sealing performance, such as silicone or fluororubber, to ensure that it can maintain good sealing performance during long-term use. The internal thread of the pressure relief port 1 and the external thread of the pressure relief nut 2 are precision-machined to ensure that the connection between the two is tight and stable. The thickness and porosity of the pressure relief sound-absorbing sponge 3 are optimized to reduce noise without affecting the gas flow efficiency.

[0035] The design of the safety buckle 7 and the locking groove 8 further enhances the overall safety of the equipment. The number and distribution of the safety buckles 7 are precisely calculated to ensure user safety even in extreme situations. For example, in certain high-risk applications, the number of safety buckles 7 or their distribution can be adjusted to improve the equipment's pressure resistance. Furthermore, the safety buckles 7 are made of high-strength plastic or metal to ensure they will not fail due to aging or fatigue during long-term use.

[0036] This invention is applicable to scenarios requiring prolonged inflation, such as massage airbags and medical air mattresses. In these applications, the air pump typically needs to operate continuously for extended periods, thus placing high demands on the safety and reliability of the equipment. By adding a mechanical safety structure, including a pressure relief port 1, a pressure relief nut 2, a pressure relief and noise-absorbing sponge 3, a pressure relief spring 4, and a pressure relief sealing plug 5, a safe pressure relief function is achieved in case of abnormal internal air pressure in the air pump. This design not only improves the safety of the equipment but also significantly enhances the user experience. For example, in the application scenario of massage airbags, users do not need to worry about the airbag rupturing due to excessive air pressure, thus allowing them to use the equipment with greater peace of mind.

[0037] In summary, this utility model significantly improves the safety and reliability of the air pump through the design of a mechanical safety structure. The core components of the pressure relief protection structure include a pressure relief port 1, a pressure relief nut 2, a pressure relief and noise-absorbing sponge 3, a pressure relief spring 4, and a pressure relief sealing plug 5. These components work together to promptly activate the pressure relief function when the air pressure abnormally increases. The design of the safety buckle 7 and the locking groove 8 enhances the connection strength between the upper cover 9 and the pump body 10 through a physical connection, avoiding safety hazards caused by excessive air pressure. The technical solution of this utility model is not only suitable for scenarios requiring long-term inflation but also has significant technical advantages and application value, providing users with a safer and more reliable user experience.

[0038] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An air pump with a pressure relief protection structure, characterized in that: The device includes a pump body (10), a top cover (9), a snap-fit ​​groove (8), a safety buckle (7), and a pressure relief protection structure. The pump body (10) and the top cover (9) cooperate to form a sealed inflation chamber (6). The bottom of the top cover (9) is provided with an inflation nozzle that communicates with the inflation chamber (6). The snap-fit ​​groove (8) is respectively provided on the top surface of the top cover (9) and the bottom of the pump body (10) extending outward. The two ends of the safety buckle (7) abut against the corresponding snap-fit ​​groove (8) of the top cover (9) and the pump body (10). The pressure relief protection structure includes a pressure relief port (1), a pressure relief nut (2), a pressure relief and noise reduction sponge (3), a pressure relief spring (4), and a pressure relief sealing plug (5).

2. The air pump as described in claim 1, characterized in that: The pressure relief port (1) is located on the top surface of the upper cover (9) and is an integrally formed structure extending upward, with internal threads on its inner wall.

3. The air pump as described in claim 2, characterized in that: The pressure relief nut (2) has a through-hole structure and is fixed to the inner wall of the pressure relief port (1) by threaded connection, and a porous pressure relief and sound-absorbing sponge (3) is fixedly connected to its inner wall.

4. The air pump as described in claim 1, characterized in that: The pressure relief spring (4) is located at the bottom of the pressure relief nut (2), with its two ends abutting against the top of the pressure relief sealing plug (5) and the bottom of the pressure relief nut (2), respectively.

5. The air pump as described in claim 4, characterized in that: Under normal working conditions, the pressure relief sealing plug (5) is pressed tightly against the gas passage between the pressure relief port (1) and the inflation chamber (6) by the pressure of the pressure relief spring (4).

6. The air pump as described in claim 1, characterized in that: The number of the safety buckles (7) is multiple and evenly distributed, and their material is high-strength plastic or metal.

7. The air pump as described in claim 1, characterized in that: The thickness and porosity of the pressure relief and sound-absorbing sponge (3) are optimized to reduce the noise generated during gas flow.

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