Supporting pad and integrally blow-molded multi-connected air spring

Abstract

The utility model discloses an integrated blow-molded multi-connected air spring and a support pad, the multi-connected air spring is composed of a plurality of spring units which are blow-molded at one time, the plurality of spring units are mutually communicated through communicating pipes, one of the plurality of spring units is provided with a blow-molding port, each spring unit comprises a body part, a plurality of air holes, a plurality of air holes and a plurality of air holes, the body part is suitable for connecting a plurality of spring units into a whole, and the communicating pipe is combined on the body part; the telescopic part is suitable for generating elastic deformation, and the telescopic part is combined on the upper side and / or the lower side of the body part. According to the utility model, the multi-connected air spring is manufactured by adopting an integrated blow molding process, and the limitation of traditional vertical blow molding is broken through. The multiple spring units are formed through one-time blow molding, so that the spring units are connected more tightly and naturally, and the defects possibly generated due to multiple times of forming and subsequent connection are avoided. In the blow molding process, the material can flow and fill more uniformly.

Description

Technical Field

[0001] This utility model relates to the field of air spring technology, and in particular to a support pad and an integrally blow-molded multi-air spring. Background Technology

[0002] In the field of elastic support devices, air springs are widely used in many products due to their excellent elasticity and adjustability, such as support pads, car seats, and industrial shock absorption equipment. However, existing air spring technology has revealed a series of problems that urgently need to be solved in practical applications, which seriously affect the performance, production efficiency, and service life of air springs.

[0003] From the perspective of blow molding, most existing air springs are blow molded vertically. This vertical blow molding method is suitable for producing air springs with complex structures. However, the complex material flow direction and filling situation during vertical blow molding result in excessive creases and complex expansion joints. These expansion joints can combine to form support pads with large variations in support height, but this blow molding method can only be adapted to the formation of a single air spring structure.

[0004] Existing air springs have significant limitations in their manufacturing processes. Currently, the common traditional airbag production method involves manufacturing each airbag individually and then attaching the next airbag via welding or other connection methods. This manufacturing method is not only complex but also has many drawbacks. During the welding process, the precision and stability of the welding process are difficult to guarantee completely, easily leading to sealing problems at the connection points. Once a poor seal occurs, gas will leak from the connection, causing the air spring to be unable to maintain stable internal pressure, thus affecting its support performance. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a support pad and an integrally blow-molded multi-air spring.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] One-piece blow-molded multi-stage air springs, suitable for support pads.

[0008] The multi-unit air spring is composed of multiple spring units formed by one-time blow molding. These multiple spring units are interconnected by a connecting tube, and one of the multiple spring units is provided with a blow molding port. Each spring unit includes:

[0009] A body portion adapted to connect multiple spring units into one unit, the connecting tube being coupled to the body portion; and

[0010] A telescopic portion adapted to produce elastic deformation, said telescopic portion being attached to the upper and / or lower side of the body portion.

[0011] Furthermore, the multi-stage air spring has three or more spring units, wherein the telescopic portions disposed on one side of the body portion of a single spring unit do not exceed three, in order to prevent the multi-stage air spring from tipping over during use.

[0012] Furthermore, the body portion is configured as a straight wall, having a first straight wall section extending in the vertical direction to provide a stable support foundation for the spring unit.

[0013] Furthermore, the telescopic portion is configured in a corrugated shape and is adapted to undulate along its axis to change the support height of the spring unit.

[0014] Furthermore, the telescopic part is attached to the upper / lower side of the main body, and a support part for increasing the support performance of the spring unit is provided on the upper / lower side of the telescopic part.

[0015] Furthermore, the support portion has a second straight wall section extending in the vertical direction to provide stable support.

[0016] Furthermore, the telescopic portion is attached to the upper and lower sides of the main body, and the surface of the telescopic portion is flat to provide stable support.

[0017] Furthermore, the plurality of spring units are arranged horizontally, and a parting line is located at the middle of the multi-air spring in the vertical direction. The parting line extends horizontally to symmetrically divide the multi-air spring into two parts.

[0018] Furthermore, the blow molding nozzle is disposed on the side of the connection starting end of the body portion.

[0019] A support pad having the aforementioned multi-air spring.

[0020] Due to the adoption of the above technical solutions, this utility model has the following beneficial effects:

[0021] 1. This utility model utilizes a one-piece blow molding process to manufacture multi-unit air springs, overcoming the limitations of traditional vertical blow molding. By blow molding multiple spring units in a single operation, the connection between each spring unit is tighter and more natural, avoiding defects that may arise from multiple molding processes and subsequent connections. During the blow molding process, the material can flow and fill more evenly, effectively reducing creases in the telescopic section and improving its quality and service life. Simultaneously, the one-piece blow molding process allows for better control over the dimensional accuracy and shape consistency of each spring unit, ensuring the stable and reliable performance of the entire multi-unit air spring.

[0022] 2. This utility model features a rationally designed telescopic section for the spring unit. No more than three telescopic sections are configured on a single side of the main body. This design effectively prevents the multi-unit air spring from tipping over during use, improving the product's stability. Furthermore, the spring unit can employ different combinations of telescopic sections according to actual needs.

[0023] 3. This utility model's integrated blow-molded multi-unit air spring is formed into a single integrated structure through a one-time blow molding process. The various spring units are interconnected via connecting pipes, forming an organic whole. This integrated structure not only improves the overall strength and stability of the multi-unit air spring but also facilitates smoother gas flow between the individual spring units, ensuring consistent gas pressure within each unit. During use, the integrated structure effectively reduces malfunctions caused by connection issues, improving product reliability and lifespan, and providing users with a more stable and reliable support experience. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this utility model, and are not intended to limit this utility model.

[0025] Figure 1 This is a first perspective structural diagram of the first embodiment of the present utility model.

[0026] Figure 2 This is a second perspective structural diagram of the first embodiment of the present utility model.

[0027] Figure 3 This is a plan view of the first embodiment of the present utility model.

[0028] Figure 4 This is a cross-sectional structural diagram of the first embodiment of this utility model.

[0029] Figure 5 This is a three-dimensional structural diagram of the second embodiment of this utility model.

[0030] Figure 6 This is a plan view of the second embodiment of the present invention.

[0031] Figure label:

[0032] In the figure, 100. Spring body; 200. Spring unit; 210. Main body; 211. First straight wall section; 220. Telescopic part; 221. First telescopic part; 222. Upper telescopic part; 223. Lower telescopic part; 230. Support part; 231. Second straight wall section; 300. Connecting pipe; 400. Blow molding nozzle. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0034] 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.

[0035] Unless otherwise defined, the technical or scientific terms used in this patent document shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model 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. They are only for the convenience of describing this utility model 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 utility model.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0038] Please see Figure 1 , Figure 2This utility model relates to a support pad and an integrally blow-molded multi-unit air spring. The multi-unit air spring includes multiple spring units 200, a connecting pipe 300, and a blow molding port 400, and the entire multi-unit air spring is manufactured through a one-time blow molding process. The multiple spring units 200 are interconnected by the connecting pipe 300, allowing gas to circulate within each spring unit, thereby achieving pressure balance and coordinated operation. The blow molding port 400 is located on the body part 210 of one of the spring units and is used to introduce gas during the blow molding process to form an air spring with a specific shape and structure. The spring unit 200 is the basic component of the multi-unit air spring, including the body part 210 and the telescopic part 220. The body part 210 serves to connect the multiple spring units 200, and the connecting pipe 300 is firmly attached to the body part 210; the telescopic part 220 is the key part that realizes the elastic deformation of the spring unit, and can undulate along its axis according to changes in external pressure, thereby changing the support height of the spring unit to meet the needs of the support pad in different usage scenarios. In this embodiment, the body portion 210 is configured as a straight wall, having a first straight wall section 211 extending vertically. This straight wall structure provides a stable support foundation for the spring units. When the multi-air spring is subjected to vertical pressure, the first straight wall section 211 can effectively disperse and transmit the pressure, preventing the spring units from tilting or deforming, thereby ensuring the overall stability of the multi-air spring. The body portions 210 of multiple spring units 200 are interconnected via a connecting pipe 300. In actual manufacturing, the connecting pipe 300 and the body portion 210 are integrally formed in a blow molding mold, ensuring the connection strength and sealing between them. The telescopic portion 220 is configured as a corrugated shape, which allows the telescopic portion to undulate along its axis. When the multi-air spring is subjected to external pressure, the corrugated structure of the telescopic portion 220 will compress or expand, thereby changing the support height of the spring unit. To prevent the multi-air spring from tipping over during use, no more than three telescopic portions are configured on one side of the body portion 210 of a single spring unit. Excessive telescopic extension sections can cause uneven stress distribution on the spring unit, potentially leading to tipping. Limiting the number of telescopic extension sections ensures the spring unit remains stable under various operating conditions, improving the reliability and safety of multi-stage air springs.

[0039] Please see Figure 3 , Figure 4In this embodiment, the spring unit includes a body portion 210 and a first telescopic portion 221 attached to the upper side of the body portion, and the number of the first telescopic portion 221 is one. A support portion 230 is disposed on the upper side of the first telescopic portion 221. The support portion 230 has a second straight wall section 231 extending in the vertical direction. The second straight wall section 231 can enhance the support performance of the support portion 230. When subjected to pressure, the second straight wall section 231 can effectively transmit the pressure to the body portion 210, further improving the stability of the spring unit.

[0040] Please see Figure 5 , Figure 6 In other embodiments, the telescopic portions can also be combined with the upper and lower sides of the body portion 210, that is, the spring unit includes the body portion 210, an upper telescopic portion 222 combined with the upper side of the body portion, and a lower telescopic portion 223 combined with the lower side of the body portion. The surfaces of the upper telescopic portion 222 and the lower telescopic portion 223 are both flat, and this configuration of telescopic portions on both sides enables the spring unit to have good elasticity and support performance in both vertical directions.

[0041] Multiple spring units 200 are interconnected via connecting pipes 300, which can be connected in various ways. For example, multiple spring units 200 can be arranged horizontally and connected in a straight line via the connecting pipes 300, in which case the length direction of the connecting pipes 300 is consistent with the straight-line arrangement direction. The diameter of the connecting pipes 300 is designed according to actual requirements. Generally, to ensure that gas can flow quickly and evenly among the spring units 200, the diameter of the connecting pipes 300 cannot be too small.

[0042] The blow nozzle 400 is positioned on the side of the starting end of the body 210. This positioning facilitates the introduction and distribution of gas during the blow molding process. During blow molding, gas is introduced through the blow nozzle 400, allowing it to quickly and evenly fill each spring unit 200 along the connecting pipe 300, forming a complete multi-air spring structure. The central axis of the blow nozzle 400 is orthogonal to the axial direction of the connecting pipe 300. This arrangement further optimizes the gas flow path, ensuring a more uniform gas distribution within each spring unit 200. A parting line (not shown in the figure) is located at the midpoint of the multi-air spring in the vertical direction. This parting line extends horizontally to symmetrically divide the multi-air spring into two parts. The parting line design is necessary for the blow molding process. During mold manufacturing, the mold is divided into upper and lower parts. During blow molding, plastic raw material is placed into the mold cavity, and then gas is introduced to cause it to expand and solidify. The parting line is positioned at the midpoint of the multi-section air spring's vertical direction. This ensures the structural symmetry of the spring unit and reduces its impact on performance. To further minimize the parting line's influence on the product's appearance and performance, the wall thickness at the parting line can be appropriately increased, for example, by 1.2-1.5 times. This design ensures structural integrity and sealing after blow molding, while also making the parting line less noticeable and improving the product's appearance.

[0043] Furthermore, this utility model also discloses a support pad incorporating the aforementioned multi-air spring. In the support pad, the multi-air spring serves as the core support component, providing stable support through its adjustable support performance. When the support pad needs to support objects of varying weights, the support height of the multi-air spring can be adjusted to accommodate different loads. For example, when placing a heavier object, more gas is added to the multi-air spring, increasing its support height and thus improving the support pad's load-bearing capacity; when placing a lighter object, some gas is released, lowering the support height of the multi-air spring and making the support pad softer and more comfortable. In addition, the integrated structure and synchronized inflation / deflation function of the multi-air spring make the operation of the support pad simpler and improve the user experience.

[0044] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model 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 utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A one-piece blow-molded multi-stage air spring, suitable for supporting pads, characterized in that: The multi-unit air spring is composed of multiple spring units formed by one-time blow molding. These multiple spring units are interconnected by a connecting tube, and one of the multiple spring units is provided with a blow molding port. Each spring unit includes: A body portion adapted to connect multiple spring units into one unit, the connecting tube being coupled to the body portion; and A telescopic portion adapted to produce elastic deformation, said telescopic portion being attached to the upper and / or lower side of the body portion.

2. The multi-stage air spring according to claim 1, characterized in that, The multi-link air spring has three or more spring units, wherein the telescopic portions disposed on one side of the body of a single spring unit do not exceed three, in order to prevent the multi-link air spring from tipping over during use.

3. The multi-stage air spring according to claim 2, characterized in that, The main body is configured as a straight wall, having a first straight wall section extending in the vertical direction to provide a stable support foundation for the spring unit.

4. The multi-stage air spring according to claim 2, characterized in that, The telescopic portion is configured in a corrugated shape and is adapted to undulate along its axis to change the support height of the spring unit.

5. The multi-stage air spring according to claim 3 or 4, characterized in that, The telescopic part is attached to the upper / lower side of the main body, and a support part for increasing the support performance of the spring unit is provided on the upper / lower side of the telescopic part.

6. The multi-stage air spring according to claim 5, characterized in that, The support portion has a second straight wall section extending in the vertical direction to provide stable support.

7. The multi-stage air spring according to claim 3 or 4, characterized in that, The telescopic part is attached to the upper and lower sides of the main body, and the surface of the telescopic part is flat to provide stable support.

8. The multi-stage air spring according to claim 1, characterized in that, The plurality of spring units are arranged horizontally, and a parting line is located at the middle of the multi-air spring in the vertical direction. The parting line extends horizontally to symmetrically divide the multi-air spring into two parts.

9. The multi-stage air spring according to claim 1, characterized in that, The blow molding nozzle is located on the side of the connection start end of the main body.

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

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