A biomimetic discontinuous skeleton structure coil spring

Abstract

The utility model relates to reel spring technical field discloses a kind of bionic discontinuous framework structure reel spring, including reel spring body, spring body at least two independent spring modules, each the spring module is a segment of elastic rigid piece, its both ends are provided with flexible connecting part, each spring module is sequentially head-to-tail series connection by flexible connecting part, adjacent two spring modules are articulated by shaft pin and there is gap, form discontinuous flexible hinge structure, adjacent spring module can relatively rotate and change shape, the structure increases the flexibility of spring radial while guaranteeing torque transmission capacity, so that it can better adapt to slight misalignment and impact load, if fracture occurs, only need to replace single spring piece, save cost.

Description

Technical Field

[0001] This utility model relates to the field of coil spring technology, and in particular to a biomimetic discontinuous skeleton structure coil spring. Background Technology

[0002] A coil spring (also known as a clockwork spring or spiral spring) is a key mechanical component that stores and releases energy based on the elastic deformation of a metal strip. It is typically made of a single, continuous, integral steel strip. The technical drawbacks of this one-piece structure are: during the repeated winding and releasing cycles, bending stress is entirely concentrated within the spring strip itself, and the stress cannot be effectively dispersed. This results in high stress concentration in localized areas, typically at the inner fixing point, the outer hook, or at minor surface imperfections. Prolonged stress concentration easily leads to metal fatigue, ultimately causing the spring to crack and fracture at these points of concentration.

[0003] In actual cable winding and unwinding devices, changes in the cable's own weight, as well as the impact caused by sudden speed changes during winding and unwinding, will apply uneven additional loads to the spring, significantly accelerating the fatigue process of the spring and shortening its service life.

[0004] Therefore, existing integral coil springs generally suffer from problems such as short fatigue life due to stress concentration, sensitivity to impact loads, and insufficient reliability. This not only increases the frequency of equipment maintenance and the cost of replacing parts, but may also lead to equipment downtime and safety hazards due to sudden spring breakage. Utility Model Content

[0005] The purpose of this utility model is to provide a biomimetic discontinuous skeleton structure coil spring, which adopts distributed force and flexible buffering, thereby reducing the failure rate of coil spring, reducing costs and increasing efficiency, and improving overall work efficiency.

[0006] This utility model is achieved through the following solution: A biomimetic discontinuous skeleton structure coil spring includes a coil spring body, which includes at least two independent spring modules. Each spring module has a flexible connecting part at both ends. The spring modules are connected in series end to end through the flexible connecting parts to form a discontinuous flexible hinge structure.

[0007] Furthermore, the flexible connection includes a groove disposed at the end of the spring module and connects adjacent spring modules via a hinge mechanism.

[0008] Furthermore, the trough body includes serpentine troughs, wavy troughs, or zigzag troughs.

[0009] Furthermore, the hinge mechanism includes a pin connection structure for enabling rotational connection between adjacent spring modules.

[0010] Furthermore, the spring module has a hollowed-out groove that runs through its upper and lower surfaces in the thickness direction, and the hollowed-out groove is arranged at a preset interval along the length direction of the spring module.

[0011] Furthermore, multiple hollowed-out slots are arranged on the spring module to form an upper row of holes and a lower row of holes.

[0012] Furthermore, the upper and lower hole groups are asymmetrically distributed.

[0013] Furthermore, reinforcing ribs are provided between the upper and lower hole groups.

[0014] Furthermore, reinforcing ribs are arranged on one surface of the spring module and protrude from the surface, extending along the length of the spring module.

[0015] Furthermore, the spring body is wound into a disc shape in the installed state.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. Instead of using a single long spring steel strip, multiple spring modules are connected in series, distributing the total torque originally borne by a single spring to multiple spring plates. The stress borne by each spring plate is significantly reduced, and if a breakage occurs, only a single spring plate needs to be replaced, saving costs.

[0017] 2. Drawing inspiration from the structural morphology of animal spines, the traditional continuous steel strip is designed as a discontinuous structure. This structure increases the radial flexibility of the spring while ensuring torque transmission capability, making it more adaptable to minor misalignment and impact loads.

[0018] 3. The hollowed-out grooves of the spring plate provide space for stress release, preventing stress from accumulating infinitely inside the material. On the other hand, it reduces the weight of the spring itself, indirectly reducing inertial force. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the flexible hinge structure of the spring module of this utility model; Figure 2 This is a schematic diagram of the overall winding of the coil spring of this utility model; Figure 3 This is a schematic diagram showing the details of the hinge structure of this utility model; Figure label: 10-Spring body; 100-Spring module; 110-Reinforcing rib; 200-Connecting part; 210-Serpentine groove; 220-Shaft pin; 300-Hollowed groove; 310-Upper row of holes; 320-Lower row of holes. Detailed Implementation

[0020] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0021] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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 component 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 utility model.

[0023] Furthermore, the terms "first," "second," etc., 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. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0024] Example 1: like Figure 1 and Figure 2 As shown, this embodiment provides a biomimetic discontinuous skeleton structure coil spring, including a coil spring body 10. The spring body 10 includes at least two independent spring modules 100. Each spring module 100 is a section of elastic rigid sheet with flexible connecting portions 200 at both ends. The spring modules 100 are connected in series end to end through the flexible connecting portions 200. A serpentine groove 210 is formed on the flexible connecting portion 200. Two adjacent opposing serpentine grooves 210 are hinged by a pin 220. There is a certain gap between the two opposing staggered serpentine grooves 210, forming a discontinuous flexible hinge structure. The flexible connecting portion 200 allows adjacent spring modules 100 to rotate and deform relative to each other.

[0025] In this embodiment, the design of the bending and staggered shape of the connecting portion 200 creates a locally flexible elastic region in the solid material of the spring module 100, thereby allowing the expected stress release to occur in this area when subjected to force. With this structure, adjacent spring modules 100 can rotate relative to each other about the axis of the pivot pin 220.

[0026] Example 2: This embodiment further optimizes the structure of the spring module based on Embodiment 1.

[0027] like Figure 3 As shown, the main body of the spring module 100 is provided with multiple hollow slots 300, which are arranged at uniform preset intervals along the length direction of the spring module 100. Specifically, the hollow slots 300 are arranged in the upper row of the spring module 100 to form an upper row of holes 310, and arranged in the lower row of the spring module 100 to form a lower row of holes 320. The upper row of holes 310 and the lower row of holes 320 are asymmetrically distributed in the width direction of the spring module 100. The hollow slots are made by laser cutting or precision stamping, which guides the stress to be effectively redistributed within the module, significantly reducing the possibility of stress concentration leading to spring breakage.

[0028] The grooves at both ends of the connecting part 200 can also be wavy grooves or zigzag grooves, which serve a similar purpose to serpentine grooves, both being to connect the front and rear spring modules 100 and provide better flexibility in the direction of force.

[0029] Example 3: This embodiment further optimizes the structure of the spring module based on embodiment 2.

[0030] A reinforcing rib 110 extending along the length of the spring module is provided between the upper row of holes 310 and the lower row of holes 320. It is only provided on one side of the spring body to enhance the overall structural strength of the spring module.

[0031] The above embodiments are all planar flexible hinges, which allow the spring to have a small adaptive angle at the inner end, avoiding purely rigid bending. When subjected to impact loads, energy can be effectively absorbed and dissipated through the progressive deformation of multiple joints, exhibiting buffering and overload resistance capabilities, effectively avoiding stress concentration, and significantly improving the service life and reliability of the coil spring.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A biomimetic discontinuous skeleton structure coil spring, characterized in that: The spring includes a coil spring body (10), which includes at least two independent spring modules (100). Each spring module (100) has a flexible connecting part (200) at both ends. Each spring module (100) is connected in series through the flexible connecting part (200) to form a non-continuous flexible hinge structure.

2. The biomimetic discontinuous skeleton structure coil spring as described in claim 1, characterized in that, The flexible connection part (200) includes a groove disposed at the end of the spring module (100) and is connected to the adjacent spring module (100) by a hinge mechanism.

3. A biomimetic discontinuous skeleton structure coil spring as described in claim 2, characterized in that, The groove includes a serpentine groove (210), a wavy groove, or a zigzag groove.

4. A biomimetic discontinuous skeleton structure coil spring as described in claim 2, characterized in that, The hinge mechanism includes a pin (220) connection structure for achieving a rotational connection between adjacent spring modules (100).

5. A biomimetic discontinuous skeleton structure coil spring as described in claim 1, characterized in that, The spring module (100) has a hollowed-out groove (300) that runs through its upper and lower surfaces in the thickness direction. The hollowed-out groove (300) is arranged at a preset interval along the length direction of the spring module (100).

6. A biomimetic discontinuous skeleton structure coil spring as described in claim 5, characterized in that, Multiple hollow slots (300) are arranged on the spring module (100) to form an upper row of holes (310) and a lower row of holes (320).

7. A biomimetic discontinuous skeleton structure coil spring as described in claim 6, characterized in that, The upper row of holes (310) and the lower row of holes (320) are asymmetrically distributed.

8. A biomimetic discontinuous skeleton structure coil spring as described in claim 6, characterized in that, A reinforcing rib (110) is provided between the upper row of holes (310) and the lower row of holes (320).

9. A biomimetic discontinuous skeleton structure coil spring as described in claim 8, characterized in that, The reinforcing rib (110) is arranged on one surface of the spring module (100) and protrudes from the surface, extending along the length direction of the spring module (100).

10. A biomimetic discontinuous skeleton structure coil spring as described in claim 1, characterized in that, The spring body is wound into a disc shape in the installed state.

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