Air bag assembly and air bag pump
By incorporating shock-resistant and dispersion layers as buffer components at the bends of the U-shaped airbag, the airbag wear problem was solved, resulting in better sealing and extended service life.
Patent Information
- Application Number
- CN202423169963.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The bends of the U-shaped airbag suffer severe wear due to the intense relative motion between the fluid and the wall, affecting its service life and sealing performance.
A buffer element is provided at the bend of the U-shaped bladder, including an impact-resistant layer and a dispersion layer. The impact-resistant layer is made of high-hardness rubber, and the dispersion layer is made of soft rubber. The internal structure has a porous structure to buffer and disperse the impact force of the fluid.
It enhances the wear and stress resistance of the U-shaped airbag bend, improves sealing, extends service life, and reduces friction.
Smart Images
Figure CN223498098U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of pump body equipment technology, specifically relating to a wind bag assembly and a wind bag pump. Background Technology
[0002] Airbag pumps, as a type of non-contact, seal-free pump with strong self-priming ability and low maintenance cost, are widely used. Airbag pumps now mostly use a U-shaped airbag; the U-shaped structure enhances the airbag's suction force on the liquid, enabling it to more effectively overcome gravity and pipeline resistance, thereby improving the pump's self-priming capability.
[0003] However, the reciprocating motion inside the U-shaped airbag causes relative motion between the fluid and the airbag wall. This relative motion is more intense at the corners and bends of the U-shape; especially at the bends of the outer wall, the fluid comes into contact with the airbag more quickly and directly, and the stress is more concentrated. This friction leads to wear on the airbag wall material. Prolonged wear may thin the airbag wall, or even cause perforation, thus affecting the airbag's service life and sealing performance, leading to liquid or gas leaks. Utility Model Content
[0004] To address the aforementioned issues, this application proposes an airbag assembly and an airbag pump. This airbag assembly effectively enhances the wear and stress resistance at the bending corners of the U-shaped airbag, thereby improving the airbag's sealing performance.
[0005] The specific technical solution of this application is as follows:
[0006] An airbag assembly includes a U-shaped airbag body and an airbag body buffer.
[0007] The bladder buffer is disposed on the outer wall of the bend of the U-shaped bladder to buffer the pressure from the fluid.
[0008] The bladder cushioning component is an elastic cushioning pad; the cushioning pad includes an impact-resistant layer that contacts the outer wall of the U-shaped bladder bend and a dispersion layer disposed outside the impact-resistant layer that contacts the fluid.
[0009] Both the impact-resistant layer and the dispersion layer have porous structures inside.
[0010] Optionally, the impact-resistant layer may be made of any of the following materials: fluororubber, polyurethane rubber, neoprene rubber, or nitrile rubber.
[0011] Optionally, the dispersion layer is a dispersion layer made of any of the following materials: natural rubber, styrene-butadiene rubber, silicone rubber, butadiene rubber, or foamed rubber.
[0012] Optionally, the number of pores inside the impact-resistant layer is less than the number of pores inside the dispersion layer.
[0013] Optionally, the pore diameter inside the impact-resistant layer is smaller than the pore diameter inside the dispersion layer.
[0014] Optionally, the thickness of the impact-resistant layer is 1-3 times the thickness of the dispersion layer.
[0015] Optionally, the U-shaped bladder has a groove at its bend, and the bladder buffer has a buckle that matches the groove, so that the bladder buffer is connected to the U-shaped bladder through the groove and the buckle.
[0016] Furthermore, the groove shape at the bend of the end of the U-shaped bladder is sickle-shaped with the opening facing downwards; the groove shape at the bend of the bottom is block-shaped.
[0017] Optionally, the outer sides of both ends of the bladder buffer are provided with reinforcing parts, and the material of the reinforcing ribs is the same as that of the U-shaped bladder.
[0018] Furthermore, the shape of the reinforcing rib includes wavy and arc-shaped.
[0019] On the other hand, this application also provides a wind bag pump, including: a pump body, a partition disposed in the center of the pump body; the pump body is divided into two symmetrical first working chambers and second working chambers by the partition; the first working chamber and the second working chamber are respectively equipped with the above-mentioned wind bag assembly; and gas phase fluid chamber and liquid phase fluid chamber are respectively disposed on both sides of the wind bag assembly.
[0020] The beneficial effects that this application may produce include, but are not limited to:
[0021] 1. The buffer component of the U-shaped capsule, located at the bend of its outer wall, combines an outer impact-resistant layer and an inner dispersion layer, which can not only provide impact resistance and wear resistance, but also better absorb and disperse impact force.
[0022] The porous structure in the bladder cushioning component allows fluid to flow through these pores when the U-shaped bladder is subjected to fluid impact, providing auxiliary cushioning. This structure also reduces the weight of the bladder cushioning component. When subjected to impact, the air is compressed, absorbing some energy, and due to the compressibility of the gaseous fluid, the bladder cushioning component has better elastic recovery capabilities. This further disperses the stress on the curved part of the U-shaped windproof bladder, preventing stress concentration and reducing friction on the curved area, thus preventing wear.
[0023] 2. Furthermore, the number of pores inside the impact-resistant layer is less than the number of pores inside the dispersion layer. In this structure, when subjected to fluid impact, the relatively fewer pores in the outermost layer first bear and disperse part of the impact force. As the impact force penetrates deeper, more pores participate in the buffering process, gradually absorbing and dissipating energy, which can better cope with impacts of different intensities and reduce friction on the wind bag. Attached Figure Description
[0024] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0025] Figure 1 This is a schematic diagram of the overall structure of the wind bag pump in this application;
[0026] Figure 2 for Figure 1 Enlarged view of Part A (Schematic diagram of the overall structure of the wind bag assembly of this application);
[0027] Figure 3 This is a schematic diagram of the structure of a partial component of the windshield assembly of this application.
[0028] List of components and reference numerals:
[0029] 1. U-shaped capsule, 2. capsule buffer, 201. impact-resistant layer, 202. dispersion layer, 203. slot, 204. buckle, 3. liquid phase fluid cavity, 4. gas phase fluid cavity, 5. first working cavity, 6. second working cavity, 7. porous structure. Detailed Implementation
[0030] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.
[0031] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0032] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.
[0033] Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0036] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.
[0037] As a specific implementation method, such as Figure 1-3 As shown. A wind bag assembly includes a U-shaped bag body 1 and a bag body buffer 2; the bag body buffer 2 is disposed on the outer wall of the bend of the U-shaped bag body 1 to buffer the pressure from the fluid.
[0038] The bladder cushioning component 2 is an elastic cushioning pad; the cushioning pad includes an impact-resistant layer 201 that contacts the outer wall of the bend of the U-shaped bladder 1 and a dispersion layer 202 disposed outside the impact-resistant layer 201 and in contact with the fluid.
[0039] Both the impact-resistant layer 201 and the dispersion layer 202 have porous structures 7 inside.
[0040] In this embodiment, the impact-resistant layer 201 in the bladder cushioning component 2 is made of polyurethane rubber; the dispersion layer 202 is made of butadiene rubber; the hardness of the impact-resistant layer 201 is higher than that of the dispersion layer 202.
[0041] refer to Figure 1 A wind bag pump includes: a pump body and a partition disposed in the center of the pump body; the pump body is divided by the partition into two symmetrical first working chambers 5 and second working chambers 6; the first working chambers 5 and second working chambers 6 are respectively equipped with the aforementioned wind bag assembly; and gas phase fluid chambers 4 and liquid phase fluid chambers 3 are respectively disposed on both sides of the wind bag assembly.
[0042] In the specific operation process, such as Figure 1 In the illustrated airbag pump, when the U-shaped airbags in the first working chamber 5 and the second working chamber 6 reciprocate and expand, relative motion occurs between the fluid and the airbag wall (the gas in the gas phase fluid chamber 4 and the liquid in the liquid phase fluid chamber 3 will respectively generate relative motion with the airbag wall). The outermost layer - the impact-resistant layer 201 - can use rubber with higher hardness to provide initial impact resistance and wear resistance; the inner layer - the dispersion layer 202 - uses softer rubber to better absorb and disperse impact forces.
[0043] The porous structure 7 allows air to flow through these pores at the bend of the U-shaped capsule 1 when subjected to fluid impact, providing auxiliary cushioning. Simultaneously, this structure reduces the weight of the capsule buffer 2. When subjected to impact, the air is compressed, absorbing some energy, and due to the compressibility of air, the capsule buffer 2 exhibits better elastic recovery.
[0044] In a preferred embodiment, the impact-resistant layer 201 is made of any of the following materials: fluororubber, polyurethane rubber, neoprene rubber, or nitrile rubber. These rubbers have high chemical resistance and high hardness. The dispersion layer 202 is made of any of the following materials: natural rubber, styrene-butadiene rubber, silicone rubber, butadiene rubber, or foamed rubber. These rubbers are relatively soft and have low hardness. This ensures that the hardness of the impact-resistant layer 201 is higher than that of the dispersion layer 202, thereby better achieving the impact resistance and wear resistance at the bend of the U-shaped bladder 1, and absorbing and dispersing impact forces.
[0045] In a preferred embodiment, the number of pores inside the impact-resistant layer 201 is less than the number of pores inside the dispersion layer 202. In this structure, when subjected to fluid impact, the relatively fewer pores in the outermost layer initially absorb and disperse part of the impact force. As the impact penetrates deeper, more pores participate in the buffering process, gradually absorbing and dissipating energy, thus better coping with impacts of varying intensities and reducing friction on the airbag.
[0046] like Figure 2-3 As shown, in a preferred embodiment, the pore diameter inside the impact-resistant layer 201 is smaller than the pore diameter inside the dispersion layer 202. In this case, the outer layer—the impact-resistant layer 201—that comes into contact with the fluid uses smaller pores to initially filter high-frequency, low-amplitude vibrations and impacts; the inner layer—the dispersion layer 202—uses larger pores to handle the relatively low-frequency but large-amplitude impact forces remaining after the outer layer's buffering. This layered structure allows for more targeted buffering of impacts of different amplitudes.
[0047] In a preferred embodiment, the thickness of the impact-resistant layer 201 is 1-3 times the thickness of the dispersion layer 202. This results in better stress dispersion.
[0048] In a preferred embodiment, the U-shaped bladder 1 has a groove 203 at its bend, and the bladder buffer 2 has a buckle 204 that matches the groove 203. The groove 203 and buckle 204 connect the bladder buffer 2 to the U-shaped bladder 1. Further, the groove 203 at the bend of the U-shaped bladder 1 is sickle-shaped with its opening facing downwards; the groove 203 at the bend of the bottom is block-shaped. An adhesive coating is provided at each position within the groove 203 to enhance the firmness of the groove 203 and buckle 204. Several grooves 203 are provided, and their shapes can be sickle-shaped or block-shaped. Figure 3 The curved sections on both sides are designed with a downward-facing sickle shape. The bottom curved section uses a combination of block-like components for the best overall stability.
[0049] In a preferred embodiment, the outer sides of both ends of the bladder buffer 2 are further provided with reinforcing parts; the shape of the reinforcing ribs includes wavy and arc-shaped.
[0050] Reinforcing ribs can effectively disperse stress and improve the stress concentration resistance of the airbag. Among them, wave-shaped reinforcing ribs can disperse stress in multiple directions. Arc-shaped reinforcing ribs can guide the force along their arc trajectory, so that the force on the object can be more evenly distributed throughout the entire structure, reducing local stress concentration at the bend; thus improving the wear resistance and stress resistance at the bend of the U-shaped airbag 1.
[0051] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.
[0052] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. A wind bag assembly, characterized in that, Includes a U-shaped capsule and capsule cushioning components; The bladder buffer is disposed on the outer wall of the bend of the U-shaped bladder to buffer the pressure from the fluid. The bladder cushioning component is an elastic cushioning pad; the cushioning pad includes an impact-resistant layer that contacts the outer wall of the U-shaped bladder bend and a dispersion layer disposed outside the impact-resistant layer that contacts the fluid. Both the impact-resistant layer and the dispersion layer have porous structures inside.
2. The airbag assembly according to claim 1, characterized in that, The impact-resistant layer is an impact-resistant layer made of any of the following materials: Fluororubber, polyurethane rubber, chloroprene rubber, nitrile rubber.
3. The airbag assembly according to claim 1, characterized in that, The dispersion layer is a dispersion layer made of any of the following materials: Natural rubber, styrene-butadiene rubber, silicone rubber, butadiene rubber, and foamed rubber.
4. The airbag assembly according to claim 1, characterized in that, The number of pores inside the impact-resistant layer is less than the number of pores inside the dispersion layer.
5. The airbag assembly according to claim 1, characterized in that, The pore diameter inside the impact-resistant layer is smaller than the pore diameter inside the dispersion layer.
6. The airbag assembly according to claim 1, characterized in that, The thickness of the impact-resistant layer is 1-3 times the thickness of the dispersion layer.
7. The airbag assembly according to claim 1, characterized in that, The U-shaped bladder has a groove at its bend, and the bladder buffer has a buckle that matches the groove. The groove and buckle are used to connect the bladder buffer to the U-shaped bladder.
8. The airbag assembly according to claim 7, characterized in that, The groove at the curved end of the U-shaped capsule is sickle-shaped with the opening facing downwards; the groove at the curved bottom is block-shaped.
9. The airbag assembly according to claim 1, characterized in that, The outer sides of both ends of the bladder buffer are also provided with reinforcing parts; the shape of the reinforcing parts includes wavy and arc-shaped.
10. A wind-bag pump, characterized in that, include: The pump body has a partition in the center; the pump body is divided into two symmetrical working chambers, a first working chamber and a second working chamber, by the partition; the first working chamber and the second working chamber are respectively equipped with the air bag assembly as described in claim 1; and gas phase fluid chamber and liquid phase fluid chamber are respectively arranged on both sides of the air bag assembly.