Air spring for supporting pad and supporting pad

Abstract

The utility model belongs to the technical field of air spring manufacturing, and particularly relates to an air spring for a supporting pad and the supporting pad, the air spring for the supporting pad comprises a body which is integrally formed through blow molding, and a closed cavity is defined in the body; the body includes: a telescopic portion configured in a corrugated shape; the base part is used for supporting the telescopic part; wherein the bottom wall of the closed cavity is provided with a blow molding opening communicated with the closed cavity, the base part is provided with an open groove, the blow molding opening is contained in the open groove, and the side wall of the open groove protrudes out of the blow molding opening so that the bottom face of the base part of the air spring can be kept flat. According to the air spring, due to the structural design that the open groove is formed in the base portion of the air spring and the side wall protrudes out of the blow molding opening, the blow molding opening is completely contained in the open groove, and a flat supporting plane is formed on the bottom face of the base portion.

Description

Technical Field

[0001] This utility model relates to the field of air spring technology in support pads, and more specifically to an air spring and support pad for support pads. Background Technology

[0002] In the field of support pads, air springs, as core shock-absorbing support components, are widely used in various support scenarios such as furniture, medical devices, and industrial equipment due to their excellent elastic cushioning performance and adjustable support height. The structural design of air springs directly affects their support stability, shock absorption effect, and installation adaptability. Currently, blow molding, with its advantages of high production efficiency and good structural integrity, has found some application in air spring manufacturing. Air springs manufactured using blow molding typically consist of a body, within which a closed chamber is defined. The support function is achieved through the gas pressure within the chamber. The body structure generally includes a corrugated telescopic section for achieving the telescopic function and a base for supporting the telescopic section.

[0003] Existing blow-molded air springs for support pads have significant structural design flaws. Their enclosed chambers have a blow-molding port on the bottom wall, which is typically exposed or simply treated after molding, while the base structure fails to effectively accommodate this port. Specifically, existing technology lacks a design that incorporates an opening groove in the base, with the groove's sidewall protruding beyond the blow-molding port. This results in the blow-molding port causing bulges or unevenness on the bottom surface of the air spring's base. Due to this unevenness, the air spring may experience unstable support and poor contact with the support surface during installation and use. This not only affects the air spring's shock absorption and support performance but may also lead to uneven stress during use, thus shortening its lifespan. Utility Model Content

[0004] This application provides an air spring with a support pad and a support pad to solve the problems of complex manufacturing and poor support performance of traditional cylindrical springs.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] An air spring for supporting a pad includes a blow-molded, one-piece body defining a closed chamber within the body; the body comprises:

[0007] The telescopic section is configured in a corrugated shape; and

[0008] The base used to support the telescopic part;

[0009] The sealed chamber has a blow-molding orifice communicating with it on its bottom wall, and the base has an opening groove. The blow-molding orifice is received inside the opening groove, and the sidewall of the opening groove protrudes outside the blow-molding orifice so that the bottom surface of the base, which serves as the air spring, remains flat.

[0010] Furthermore, the telescopic portion has an air port configured to allow gas to be introduced to change the support characteristics of the air spring by controlling the gas saturation of the closed chamber.

[0011] Furthermore, the support features include support stiffness and / or support height.

[0012] Furthermore, the bottom end of the blow molding nozzle is closed.

[0013] Furthermore, the opening groove is configured to extend radially along the base.

[0014] Furthermore, the body has a parting line arranged radially thereon, and the body is assembled from the parting line.

[0015] Furthermore, the air inlet is cut by a spring, and an air tube is provided at the outlet of the air inlet.

[0016] Furthermore, there are two air ports, which are axially symmetrically distributed on the telescopic part.

[0017] Furthermore, the base is cylindrical, and the telescopic portion includes a plurality of alternately arranged ribs 131 and grooves.

[0018] A support pad having the aforementioned air spring.

[0019] The beneficial effects of this utility model are:

[0020] (1) This utility model features a structural design that includes an opening groove at the base of the air spring and a sidewall protruding beyond the blow molding opening. Because the sidewall of the opening groove protrudes beyond the blow molding opening, the blow molding opening is completely contained within the opening groove, resulting in a flat support plane on the bottom surface of the base. This design completely eliminates the bottom protrusion caused by traditional blow molding openings, not only achieving a tight fit with the support surface and avoiding shaking and offset during installation, but also enabling standardized arrangement within the support pad, significantly reducing installation difficulty.

[0021] (2) The air spring of this utility model adopts a unique one-piece blow molding process, and the main body is integrally formed through the blow molding port at the bottom of the base. This one-piece molding method fundamentally avoids the sealing problems caused by welding of separate parts, eliminates the microscopic defects that may exist at the welding points, and greatly improves the overall air tightness of the air spring. In addition, the air spring of this utility model adopts a one-piece blow molding process, which reduces the separate injection molding and secondary welding processes of separate parts, greatly simplifies the processing flow, reduces the stringent requirements on mold precision and material flowability, reduces various defects caused by process complexity, improves the product yield, and reduces production costs and production cycle.

[0022] (3) The main body of this utility model has a parting line arranged radially thereon, and is spliced ​​from the parting line. This parting line design provides convenience for production and processing while ensuring the integrity of the air spring structure, facilitates the design and manufacture of molds, and also facilitates product demolding, further optimizing the production process. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a plan view of the present invention;

[0025] Figure 3 This is the first cross-sectional view of the present invention.

[0026] Figure 4 This is the second cross-sectional view of the present invention.

[0027] Figure 5 This is a three-dimensional cross-sectional view of the present invention.

[0028] Figure 6 This is a bottom view of the present invention.

[0029] Explanation of the reference numerals in the figure:

[0030] 100. Body; 110. Enclosed chamber; 120. Base; 121. Blow nozzle; 122. Opening groove; 130. Telescopic part; 131. Rib; 132. Groove; 140. Air vent; 150. Parting line; 200. Air pipe. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] Unless otherwise defined, the technical or scientific terms used in this patent document shall have the ordinary meaning understood by a person skilled in the art to which this application pertains. The terms "first," "second," and similar terms used in this patent specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or its equivalents, and do not exclude other elements or objects. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. These terms are 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, and therefore should not be construed as a limitation of this application.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, features in the following embodiments can be combined with each other.

[0036] Please see Figures 1-5This utility model discloses an air spring for a support pad and a support pad containing the air spring. The entire air spring is axially arranged along an axis and integrally blow-molded, consisting of a body 100. The body 100 defines a closed chamber 110. The body 100 includes two main parts: a base 120 and a telescopic part 130. These parts cooperate to achieve the support and adjustment functions of the air spring. The base 120 is the basic support component of the air spring, supporting the telescopic part 130 and providing a stable installation and support foundation for the entire air spring. In this embodiment, the base 120 is cylindrical and made of a high-strength, high-toughness plastic material, such as polycarbonate (PC) or acrylonitrile-butadiene-styrene copolymer (ABS). This material has good mechanical properties and chemical corrosion resistance, and can withstand certain pressure and external forces, ensuring the stability and reliability of the air spring during use. The telescopic part 130 is configured in a corrugated shape, similar to a universal telescopic duct. This corrugated design gives the telescopic section 130 excellent telescopic performance, allowing it to freely expand and contract along the axial direction when the gas pressure changes, thereby enabling adjustment of the air spring support height and stiffness. The telescopic section 130 is also made of the same or similar plastic material as the base 120 to ensure material consistency and performance stability of the entire body 100.

[0037] To further optimize the structure and performance of the air spring, a blow-molding port 121 communicating with the bottom wall of the enclosed chamber 110 is provided. The base 120 has an opening groove 122, and the blow-molding port 121 is received inside the opening groove 122. The sidewall of the opening groove 122 protrudes beyond the blow-molding port 131, so that the bottom surface of the base serving as the air spring remains flat. The opening groove 122 is configured to extend radially along the base 120, and its shape and size are precisely designed according to the size and shape of the blow-molding port 121. The opening groove 122 provides space for the blow molding nozzle 121 during the blow molding process, preventing the nozzle from protruding from the bottom surface of the base 120 and affecting the fit between the air spring and the support pad or other mounting surfaces. Furthermore, when the air spring is installed on the support pad or other components, it's important to note that this application solves the problem of flatness on the bottom surface of the base 120 by providing the opening groove 122 in the base 120 and accommodating the blow molding nozzle 121 within it, making the sidewall of the opening groove 122 protrude from the blow molding nozzle 121. This design overcomes the limitations of traditional blow molding processes, retaining the advantages of integrated blow molding while achieving perfect flatness of the support surface. In this embodiment, a blow molding nozzle 121 is provided at the bottom end of the base 120, through which the air spring is integrally blow molded. It is important to note that the one-piece blow molding process gives the air spring body 100 high integrity and sealing, reduces gaps between components, effectively prevents gas leakage, and improves the service life and performance stability of the air spring. The blow molding port 121 closes at its bottom after the air spring is formed, ensuring the sealing of the enclosed chamber 110 and preventing gas from escaping from the blow molding port 121. The blow molding port 121 is located at the bottom of the body 100 and is sealed after the air spring is blow molded. The blow molding port 121 is configured to allow adjustment of the wall thickness of the spring body 100 by changing the amount of gas introduced into the body 100. In this embodiment, during the blow molding process, an air tube is inserted into the blow molding port 121 to blow mold the air spring. When the amount of gas introduced is large, the wall thickness of the body 100 is thinner; conversely, when the amount of gas introduced into the body 100 is small, the wall thickness of the body 100 is thicker.

[0038] The telescopic section 130 includes multiple alternating ribs 131 and grooves 132. The arrangement of the ribs 131 and grooves 132 not only enhances the structural strength of the telescopic section 130 but also further optimizes its telescopic performance. The ribs 131 provide support when the telescopic section 130 is subjected to external forces, preventing excessive deformation or damage; the grooves 132 provide space for the telescopic section 130 to expand and contract, allowing for more flexible expansion and contraction. The dimensions, shapes, and distribution of the ribs 131 and grooves 132 are carefully designed to ensure that the telescopic section 130 possesses sufficient strength and stability while meeting the requirements for telescopic performance.

[0039] An air inlet 140 is provided on the telescopic section 130. The air inlet 140 is configured to allow gas to be introduced. By controlling the gas saturation of the closed chamber 110, the support characteristics of the air spring are changed. The support characteristics include support stiffness and / or support height. The air inlet 140 is cut from the spring, and an air tube 200 is disposed at the air inlet 140. The air tube 200 is made of flexible, high-pressure resistant rubber or plastic material. One end of the air tube 200 is tightly connected to the air inlet 140, and the other end is connected to an external air source or gas control device. By introducing or expelling gas into the closed chamber 110 through the air tube 200, the gas pressure and saturation within the closed chamber 110 are changed, thereby adjusting the support height and stiffness of the air spring. For example, when more gas is filled into the closed chamber 110, the gas pressure increases, the upward thrust on the telescopic part 130 increases, the support height of the air spring rises, and the support stiffness also increases accordingly; conversely, when gas is discharged from the closed chamber 110, the gas pressure decreases, the support height of the air spring decreases, and the support stiffness also decreases accordingly.

[0040] In this embodiment, two air ports 140 are configured, and the two air ports 140 are axially symmetrically distributed on the telescopic part 130. This symmetrical distribution design can make the air distribution more uniform in the closed chamber 110, ensuring that the air spring has consistent support performance in all directions, and avoiding the situation where the air spring tilts or the support is unstable due to uneven gas distribution.

[0041] Please see Figure 6 The body 100 has a parting line 150 arranged radially therein, and the body 100 is assembled from the parting line 150. During the blow molding process, the mold is divided into left and right parts with the two ends of the parting line as shown in the figure as the parting direction. After the air spring is formed, the left and right molds separate, leaving the parting line 150 on the body 100. The position and shape of the parting line 150 are precisely designed to ensure that it does not affect the performance and appearance of the air spring. In order to further improve the sealing and aesthetics of the air spring, grinding, polishing or applying sealant can be performed at the parting line 150 to eliminate gaps and unevenness that the parting line 150 may cause.

[0042] This utility model also discloses a support pad having the aforementioned air spring. The main body of the support pad is made of a soft, comfortable material, such as sponge, memory foam, or latex, providing users with a comfortable support and contact experience. The air spring is installed inside the support pad, and its base 120 is fixed to the bottom of the support pad, connected to the main body of the support pad by screws, glue, or clips to ensure a firm connection.

[0043] When using the support cushion, users can adjust the air spring's support height and firmness by injecting or depressing air into the closed chamber 110 of the air spring through the air tube 200 via an external gas control device (such as an air pump or valve) according to their needs and comfort. For example, when used as a seat support cushion, users can adjust the air spring's support firmness according to their weight and sitting posture, making the seat more conform to the body's curves and reducing body pressure; when used as a mattress support cushion, users can adjust the air spring's support height and firmness according to their preference for sleep firmness, creating a personalized sleep experience.

[0044] Meanwhile, because the telescopic part 130 of the air spring has good telescopic performance and corrugated shape design, when the support pad is squeezed or deformed by external force, the telescopic part 130 can telescopically deform accordingly, effectively buffering the external force, reducing the pressure of the support pad on the user's body, and improving the comfort and adaptability of the support pad.

[0045] In addition, the support pad can be equipped with other auxiliary functional components, such as temperature regulation devices and massage devices, to further enhance its functionality and user experience, depending on the actual application scenario. Temperature regulation devices can adjust the surface temperature of the support pad through heating or cooling, providing a more comfortable user environment; massage devices can massage the user's body through vibration, kneading, and other methods to relieve fatigue.

[0046] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An air spring for supporting a pad, comprising a blow-molded integral body, wherein a closed chamber is defined within the body; characterized in that, The body includes: The telescopic section is configured in a corrugated shape; and The base used to support the telescopic part; The sealed chamber has a blow-molding orifice communicating with it on its bottom wall, and the base has an opening groove. The blow-molding orifice is received inside the opening groove, and the sidewall of the opening groove protrudes outside the blow-molding orifice so that the bottom surface of the base, which serves as the air spring, remains flat.

2. The air spring according to claim 1, characterized in that, The telescopic section has an air vent configured to allow gas to be introduced to change the support characteristics of the air spring by controlling the gas saturation of the enclosed chamber.

3. The air spring according to claim 2, characterized in that, The support features are support stiffness and / or support height.

4. The air spring according to claim 1, characterized in that, The bottom end of the blow molding nozzle is closed.

5. The air spring according to claim 1, characterized in that, The opening groove is configured to extend radially along the base.

6. The air spring according to claim 1, characterized in that, The body has a parting line arranged radially thereon, and the body is assembled from the parting line.

7. The air spring according to claim 2, characterized in that, The air inlet is cut by a spring, and an air tube is provided at the outlet of the air inlet.

8. The air spring according to claim 7, characterized in that, The air inlet is configured in two parts, and the two air inlets are axially symmetrically distributed on the telescopic part.

9. The air spring according to claim 1, characterized in that, The base is cylindrical, and the telescopic part includes multiple alternating ribs and grooves.

10. A support pad, characterized in that, The support pad has an air spring as described in any one of claims 1-9.

Images