Anti-fracture extension spring

Abstract

The utility model relates to the technical field of springs, in particular to an anti-fracture extension spring which is characterized in that a plurality of connecting grooves are formed in the top of a top plate, connecting rods are arranged in the connecting grooves, a spring body is arranged at the bottom of the top plate, a bottom plate is arranged at the bottom of the spring body, and two limiting assemblies are arranged on the two sides of the spring body. According to the anti-fracture extension spring, the tensile amount is accurately controlled, the structural stability is enhanced, fracture is effectively prevented, the use safety is improved, and the anti-fracture extension spring is convenient to install and maintain and has good universality.

Description

Technical Field

[0001] This utility model relates to the field of spring technology, and more specifically, to a fracture-resistant tension spring. Background Technology

[0002] In the fields of mechanical engineering and various equipment manufacturing, tension springs, as a basic elastic element, are widely used in many devices that require elastic force, buffering, or reset functions. However, traditional tension springs often face the risk of breakage due to factors such as overstretching, fatigue wear, or external impact during actual use. Once a tension spring breaks, it not only affects the normal operation of the equipment but may even cause safety accidents, resulting in serious economic losses and personal injuries. Although some optimized designs for tension springs have emerged in existing technologies, there are still many shortcomings in preventing breakage. For example, some designs attempt to solve the breakage problem simply by increasing the strength of the spring material, but this method is often limited by the performance bottlenecks of the material itself and may increase production costs and processing difficulties; some designs use simple limiting structures, but these limiting structures are mostly single-function, unable to accurately control the spring's extension, and cannot effectively adapt to the usage requirements under different working conditions. Utility Model Content

[0003] In view of this, this utility model addresses the shortcomings of the prior art by proposing a fracture-resistant tension spring, aiming to solve at least one of the problems mentioned in the background art.

[0004] This utility model provides a fracture-resistant tension spring, comprising: a top plate, the top of which is provided with a plurality of connecting grooves, and a connecting rod is provided inside the connecting groove, the two ends of the connecting rod being fixedly connected to the inner wall of the connecting groove respectively;

[0005] A spring is disposed at the bottom of the top plate, and the top of the spring is fixedly connected to the bottom of the top plate;

[0006] A base plate is disposed at the bottom of the spring, and the top of the base plate is fixedly connected to the bottom of the spring;

[0007] Two limiting components are provided, which are disposed on both sides of the spring. The top and bottom of the two limiting components are fixedly connected to the bottom of the top plate and the top of the bottom plate, respectively.

[0008] In some embodiments, the outer diameter of the top plate matches the outer diameter of the bottom plate.

[0009] In some embodiments, the connecting rod coincides with the transverse axis of the connecting groove.

[0010] In some embodiments, the spring coincides with the centerline of the top plate and the bottom plate.

[0011] In some embodiments, the transverse cross-section of both the top plate and the bottom plate is rectangular.

[0012] In some embodiments, the limiting component includes:

[0013] The top of the first limiting post is fixedly connected to the bottom of the top plate, and the bottom of the first limiting post is fixedly connected to the first limiting plate.

[0014] The first sleeve has a first opening at its top and a second limiting plate fixedly connected to its bottom. The first limiting post extends into the interior of the first sleeve, and the side wall of the first limiting plate is slidably connected to the inner wall of the first sleeve.

[0015] In some embodiments, the limiting component further includes:

[0016] The bottom of the second limiting post is fixedly connected to the top of the base plate;

[0017] The second sleeve is disposed at the top of the second limiting post. The bottom of the second sleeve is fixedly connected to the top of the second limiting post. The top of the second sleeve is provided with a second opening. The first sleeve extends into the interior of the second sleeve, and the second limiting plate is slidably connected to the inner wall of the second sleeve.

[0018] In some embodiments, the first limiting post has a plurality of first through holes arranged at intervals along the length direction of the first limiting post, and the first sleeve has a plurality of second through holes corresponding to the plurality of first through holes. The first sleeve is fixedly connected to the first limiting post by a limiting rod passing through the first through holes and the second through holes in sequence.

[0019] In some embodiments, the inner diameter of the first opening matches the outer diameter of the first limiting post, the first limiting post is slidably connected to the first opening, and the inner diameter of the first opening is smaller than the outer diameter of the first limiting plate.

[0020] The outer diameter of the first sleeve matches the inner diameter of the second opening, and the first sleeve is slidably connected to the second opening. The inner diameter of the second opening is smaller than the outer diameter of the second limiting plate.

[0021] In some embodiments, a handle is fixedly connected to the side wall of the first sleeve.

[0022] Compared with existing technologies, the advantages of this invention are as follows: Through a unique limiting component design, the maximum extension of the spring can be precisely limited. The first sleeve slides in conjunction with the first limiting post and can be fixed by a limiting rod passing through the corresponding through hole. This structure allows for flexible adjustment of the spring's upper extension limit according to actual needs, preventing the spring from reaching or exceeding its elastic limit due to overstretching, thus greatly reducing the risk of spring breakage due to overstretching. The limiting component is symmetrically arranged on both sides of the spring with the spring as the axis, and its top and bottom are fixedly connected to the top plate and bottom plate respectively, forming a stable support and limiting frame. During spring operation, this frame effectively constrains the spring's deformation, preventing irregular twisting or bending when subjected to external forces, further enhancing the overall structural stability of the spring and reducing the possibility of breakage due to uneven deformation and local stress concentration. Multiple connecting grooves and connecting rods on the top plate make the connection between the top plate and other components more stable and reliable. The two ends of the connecting rod are fixedly connected to the inner wall of the connecting groove, ensuring that the top plate will not easily shift or deform when subjected to external force, thereby ensuring the stability and safety of the entire tension spring device during operation and reducing the risk of safety accidents that may be caused by loosening or failure of the connection parts.

[0023] The above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0024] Other features and aspects of this disclosure will become clearer from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 A front view of the anti-breakage tension spring provided in an embodiment of this utility model;

[0027] Figure 2 A top view of the anti-breakage tension spring provided in an embodiment of this utility model;

[0028] Figure 3 A partial enlarged view of the anti-breakage tension spring provided in an embodiment of this utility model;

[0029] Figure 4 A partially enlarged view of the anti-breakage tension spring provided in an embodiment of this utility model.

[0030] The components are: 1. Top plate; 2. Connecting groove; 3. Connecting rod; 4. Spring; 5. Base plate; 6. First limiting post; 7. First limiting plate; 8. First sleeve; 9. First opening; 10. Second limiting plate; 11. Second limiting post; 12. Second sleeve; 13. Second opening; 14. First through hole; 15. Second through hole; 16. Limiting rod; 17. Handle. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0032] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 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.

[0033] 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[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] See Figure 1-4 As shown, a breakage-resistant tension spring according to an embodiment of this application includes:

[0036] The top plate 1 has multiple connecting grooves 2 on its top. A connecting rod 3 is installed inside the connecting groove 2, and the two ends of the connecting rod 3 are fixedly connected to the inner wall of the connecting groove 2 respectively.

[0037] Spring 4 is disposed at the bottom of the top plate 1, and the top of spring 4 is fixedly connected to the bottom of the top plate 1;

[0038] A base plate 5 is disposed at the bottom of the spring 4, and the top of the base plate 5 is fixedly connected to the bottom of the spring 4;

[0039] Two limiting components are provided, which are disposed on both sides of the spring 4. The top and bottom of the two limiting components are fixedly connected to the bottom of the top plate 1 and the top of the bottom plate 5, respectively.

[0040] In some specific embodiments, the outer diameter of the top plate 1 matches the outer diameter of the bottom plate 5.

[0041] In some specific embodiments, the connecting rod 3 coincides with the transverse axis of the connecting groove 2.

[0042] In some specific embodiments, the spring 4 coincides with the centerline of the top plate 1 and the bottom plate 5.

[0043] In some specific embodiments, the transverse cross-sections of the top plate 1 and the bottom plate 5 are both rectangular structures.

[0044] In some specific embodiments, the limiting component includes:

[0045] The top of the first limiting post 6 is fixedly connected to the bottom of the top plate 1, and the bottom of the first limiting post 6 is fixedly connected to the first limiting plate 7.

[0046] The first sleeve 8 has a first opening 9 at its top, and a second limiting plate 10 is fixedly connected to the bottom of the first sleeve 8. The first limiting post 6 extends into the interior of the first sleeve 8, and the side wall of the first limiting plate 7 is slidably connected to the inner wall of the first sleeve 8.

[0047] In some specific embodiments, the limiting component further includes:

[0048] The bottom of the second limiting post 11 is fixedly connected to the top of the base plate 5;

[0049] The second sleeve 12 is disposed on the top of the second limiting post 11. The bottom of the second sleeve 12 is fixedly connected to the top of the second limiting post 11. The top of the second sleeve 12 is provided with a second opening 13. The first sleeve 8 extends into the interior of the second sleeve 12, and the second limiting plate 10 is slidably connected to the inner wall of the second sleeve 12.

[0050] In some specific embodiments, the first limiting post 6 is provided with a plurality of first through holes 14 arranged at intervals along the length direction of the first limiting post 6, and the first sleeve 8 is provided with a plurality of second through holes 15 corresponding to the plurality of first through holes 14. The first sleeve 8 is fixedly connected to the first limiting post 6 by means of a limiting rod 16 passing through the first through holes 14 and the second through holes 15 in sequence.

[0051] In some specific embodiments, the inner diameter of the first opening 9 matches the outer diameter of the first limiting post 6, the first limiting post 6 is slidably connected to the first opening 9, and the inner diameter of the first opening 9 is smaller than the outer diameter of the first limiting plate 7.

[0052] The outer diameter of the first sleeve 8 matches the inner diameter of the second opening 13. The first sleeve 8 is slidably connected to the second opening 13. The inner diameter of the second opening 13 is smaller than the outer diameter of the second limiting plate 10.

[0053] In some specific embodiments, a handle 17 is fixedly connected to the side wall of the first sleeve 8.

[0054] Working principle:

[0055] When it is necessary to reduce the tension of spring 4, pull out the limiting rod 16, push the first sleeve 8 upward with the handle 17 so that the second limiting plate 10 is close to the top of the second sleeve 12, and then insert the limiting rod 16 into the first through hole 14 and the second through hole 15 in sequence to fix the first sleeve 8 and the first limiting post 6.

[0056] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A breakage-resistant tension spring, characterized in that, include: The top plate has multiple connecting grooves on its top, and connecting rods are installed inside the connecting grooves. The two ends of the connecting rods are fixedly connected to the inner wall of the connecting grooves respectively. A spring is disposed at the bottom of the top plate, and the top of the spring is fixedly connected to the bottom of the top plate; A base plate is disposed at the bottom of the spring, and the top of the base plate is fixedly connected to the bottom of the spring; Two limiting components are provided, which are disposed on both sides of the spring. The top and bottom of the two limiting components are fixedly connected to the bottom of the top plate and the top of the bottom plate, respectively.

2. The anti-breakage tension spring according to claim 1, characterized in that, The outer diameter of the top plate matches the outer diameter of the bottom plate.

3. The anti-breakage tension spring according to claim 2, characterized in that, The connecting rod coincides with the transverse axis of the connecting groove.

4. The anti-breakage tension spring according to claim 3, characterized in that, The spring coincides with the centerline of the top plate and the bottom plate.

5. A fracture-resistant tension spring according to claim 4, characterized in that, Both the top plate and the bottom plate have rectangular cross-sections.

6. The anti-breakage tension spring according to claim 5, characterized in that, The limiting component includes: The top of the first limiting post is fixedly connected to the bottom of the top plate, and the bottom of the first limiting post is fixedly connected to the first limiting plate. The first sleeve has a first opening at its top and a second limiting plate fixedly connected to its bottom. The first limiting post extends into the interior of the first sleeve, and the side wall of the first limiting plate is slidably connected to the inner wall of the first sleeve.

7. A fracture-resistant tension spring according to claim 6, characterized in that, The limiting component also includes: The bottom of the second limiting post is fixedly connected to the top of the base plate; The second sleeve is disposed at the top of the second limiting post. The bottom of the second sleeve is fixedly connected to the top of the second limiting post. The top of the second sleeve is provided with a second opening. The first sleeve extends into the interior of the second sleeve, and the second limiting plate is slidably connected to the inner wall of the second sleeve.

8. The anti-breakage tension spring according to claim 7, characterized in that, The first limiting post has a plurality of first through holes arranged at intervals along its length. The first sleeve has a plurality of second through holes corresponding to the plurality of first through holes. The first sleeve is fixedly connected to the first limiting post by passing through the first through holes and the second through holes in sequence via a limiting rod.

9. A fracture-resistant tension spring according to claim 8, characterized in that, The inner diameter of the first opening matches the outer diameter of the first limiting post, the first limiting post is slidably connected to the first opening, and the inner diameter of the first opening is smaller than the outer diameter of the first limiting plate. The outer diameter of the first sleeve matches the inner diameter of the second opening, and the first sleeve is slidably connected to the second opening. The inner diameter of the second opening is smaller than the outer diameter of the second limiting plate.

10. A fracture-resistant tension spring according to claim 9, characterized in that, A handle is fixedly connected to the side wall of the first sleeve.

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