Compression spring with variable cross-section and high resistance to deformation

Abstract

This utility model discloses a deformation-resistant, long-life compression spring with a variable cross-section, relating to the field of spring technology. It improves upon traditional compression springs, which mostly employ a single cross-section design, meaning each coil of the spring has the same diameter. While this design is simple to manufacture, it is prone to deformation and fatigue fracture under prolonged stress in practical applications. This includes the spring body and the upper and lower bases located at both ends of the spring body. In this utility model, when external force is applied to the spring body, the variable cross-section design results in a more uniform force distribution, reducing the maximum stress value at a single point and thus improving the spring body's resistance to deformation. Simultaneously, the presence of elastic support members helps balance the force field within the entire spring body, maintaining good rigidity even under high pressure, reducing creep and minimizing the likelihood of spring body breakage during use.

Description

Technical Field

[0001] This utility model relates to the field of springs, and in particular to a deformation-resistant, long-life compression spring with a variable cross-section. Background Technology

[0002] Compression springs are helical springs that withstand axial pressure. They are made of elastic materials and deform under external force, returning to their original shape after the force is removed. The cross-section of the material used is mostly circular, but rectangular and multi-strand steel wire are also used. There is a certain gap between the coils of a compression spring. When subjected to external load, the spring contracts and deforms, storing deformation energy.

[0003] Traditional compression springs mostly use a single cross-section design, meaning that each coil of the spring has the same diameter. Although this design is simple to manufacture, it is prone to deformation and fatigue fracture due to long-term stress in practical applications, which seriously affects the working performance and safety of the equipment. Therefore, a deformation-resistant, long-life compression spring with a variable cross-section is proposed. Utility Model Content

[0004] To address the issue that traditional compression springs mostly employ a single-section design, where each coil of the spring has the same diameter, while simple to manufacture, this design is prone to deformation and fatigue fracture under prolonged stress in practical applications. This invention provides a deformation-resistant, long-life compression spring with a variable cross-section.

[0005] This utility model provides a deformation-resistant, long-life compression spring with a variable cross-section, employing the following technical solution:

[0006] A variable cross-section, deformation-resistant, long-life compression spring includes a spring body and an upper base and a lower base disposed at both ends of the spring body. The spring body is made of several round steel wires with different cross-sections spirally wound. An elastic support is disposed between the upper base and the lower base. The elastic support is disposed inside the spring body. A circular through groove is opened inside the lower base. A disassembly plate is threadedly connected to the inner wall of the circular through groove opened inside the lower base.

[0007] By adopting the above technical solution, when an external force is applied to the spring body, the force distribution is more uniform due to the multi-section design of the spring body, which reduces the maximum stress value at a single point, thereby improving the spring body's ability to resist deformation. At the same time, the presence of the elastic support helps to balance the force field within the entire spring body, maintaining good rigidity even under high pressure, reducing the creep of the spring body, and reducing the possibility of spring body breaking during use.

[0008] Optionally, the disassembly plate has an internal mounting groove, and a sliding rod is fixedly installed on the inner wall of the mounting groove. A sliding block is slidably connected to the outer surface of the sliding rod. A tension spring is fixedly installed on one side of the sliding block. One end of the tension spring is fixedly connected to the inner wall of the mounting groove. A limit rod is fixedly installed on the side of the sliding block near the tension spring. The inner wall of the circular through groove inside the lower base has an annular limit groove that communicates with the outside. The limit rod is adapted to the annular limit groove.

[0009] By adopting the above technical solution, when the elastic support needs to be replaced later, the staff only needs to control the movement of the sliding block. The sliding block can drive the limit rod to move and stretch the tension spring, so that the limit rod is separated from the annular limit groove on the lower base. Then the staff can unscrew the disassembly plate to take out the elastic support for replacement.

[0010] Optionally, the upper and lower surfaces of the elastic support are fixedly equipped with locking blocks, and the inner sides of the upper and lower bases are provided with locking slots that are compatible with the locking blocks.

[0011] By adopting the above technical solution, the card block and card slot can increase the contact area between the elastic support and the upper and lower bases, making the elastic support more stable during use.

[0012] Optionally, a slider is fixedly installed on one side of the limiting rod, and a groove adapted to the slider is provided inside the disassembly plate.

[0013] By adopting the above technical solution, the slider and the groove can limit the movement range of the limit rod, and at the same time, the movement of the limit rod can be made more stable.

[0014] Optionally, a rubber sealing gasket is provided on the inner wall of the circular through groove inside the lower base, and the rubber sealing gasket is located on the outside of the disassembly plate.

[0015] By adopting the above technical solution, the rubber sealing gasket can keep the disassembly plate in a relatively sealed environment, reduce the impact of the external environment on the disassembly plate, and extend the service life of the disassembly plate.

[0016] Optionally, the outer surface of the spring body is provided with an anti-corrosion layer.

[0017] By adopting the above technical solution, the anti-corrosion layer can increase the anti-corrosion performance of the spring body.

[0018] Optionally, a push plate is fixedly installed on one side of the sliding block, and an elongated sliding hole is provided on the outer side of the disassembly plate, with the push plate extending through to the outside of the elongated sliding hole.

[0019] By adopting the above technical solution, the push plate can facilitate the movement of the sliding block by the staff.

[0020] Optionally, the outer side of the rubber sealing gasket is provided with an inner groove, a pull tab is fixedly installed on the inner wall of the inner groove provided inside the rubber sealing gasket, and an elastic rope is fixedly installed on the inner side of the rubber sealing gasket, the elastic rope being fixedly connected to the inner wall of the circular through groove.

[0021] By adopting the above technical solution, the pull tab allows workers to easily remove the rubber sealing gasket, and the elastic rope can limit the rubber sealing gasket, reducing the possibility of the rubber sealing gasket falling or being lost.

[0022] In summary, this utility model has the following beneficial effects:

[0023] 1. In this utility model, when an external force is applied to the spring body, the force distribution is more uniform due to the multi-section design of the spring body, which reduces the maximum stress value at a single point, thereby improving the spring body's ability to resist deformation. At the same time, the presence of the elastic support helps to balance the force field within the entire spring body, maintaining good rigidity even under high pressure, reducing the creep of the spring body, and also reducing the possibility of the spring body breaking during use.

[0024] 2. In use, the limiting rod is connected to the annular limiting groove with the help of the tension spring, which makes the connection of the disassembly plate more stable and reduces the possibility of loosening during use. When the elastic support needs to be replaced later, the staff only needs to push the push plate to separate the limiting rod from the annular limiting groove on the lower base. Then the staff can unscrew the disassembly plate to take out the elastic support for replacement. Attached Figure Description

[0025] Figure 1 This is a frontal cross-sectional structural diagram of the present invention.

[0026] Figure 2 This is a utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0027] Figure 3 This is a utility model Figure 1 Enlarged structural diagram at point B.

[0028] Figure 4 This is a schematic diagram of the structure of the rubber sealing gasket of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Spring body; 2. Upper base; 3. Lower base; 4. Elastic support; 5. Disassembly plate; 6. Sliding rod; 7. Sliding block; 8. Tension spring; 9. Limiting rod; 10. Locking block; 11. Slider; 12. Rubber sealing gasket; 13. Anti-corrosion layer; 14. Push plate; 15. Pulling plate; 16. Elastic rope. Detailed Implementation

[0031] The following description, in conjunction with the embodiments of this utility model, includes appendices. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] Please refer to Figure 1 A variable cross-section, deformation-resistant, long-life compression spring includes a spring body 1 and an upper base 2 and a lower base 3 disposed at both ends of the spring body 1. The outer surface of the spring body 1 is provided with an anti-corrosion layer 13, which is made of epoxy resin-based composite material, ensuring both the adhesion of the coating and enhancing the anti-corrosion performance.

[0033] Please refer to Figure 1 The spring body 1 is made of several round steel wires with different cross-sections spirally wound together. The round steel wires are made of high-quality carbon structural steel to ensure good elasticity and wear resistance. The diameter of the spring body 1 is smaller at both ends and gradually increases in the middle. When an external force is applied to the spring body 1, the variable cross-section design makes the force distribution more uniform, reducing the maximum stress value at a single point, thereby improving the spring body 1's resistance to deformation. An elastic support 4 is provided between the upper base 2 and the lower base 3. The elastic support 4 is located inside the spring body 1 and is made of shape memory alloy, which can quickly return to its initial state, preventing permanent deformation. The presence of the elastic support 4 helps to balance the force field within the entire spring body 1, maintaining good rigidity even under high pressure, reducing the creep of the spring body 1, and reducing the possibility of breakage during use.

[0034] Please refer to Figure 1 The lower base 3 has a circular through groove inside, and a disassembly plate 5 is threadedly connected to the inner wall of the circular through groove inside the lower base 3. A locking block 10 is fixedly installed on both the upper and lower surfaces of the elastic support 4. The inner sides of the upper base 2 and the lower base 3 are provided with locking grooves that fit the locking block 10. The locking block 10 and the locking grooves increase the contact area between the elastic support 4 and the upper base 2 and lower base 3, making the elastic support 4 more stable during use.

[0035] Please refer to Figure 1 and Figure 2 The disassembly plate 5 has an internal mounting groove. A sliding rod 6 is fixedly installed on the inner wall of the mounting groove. A sliding block 7 is slidably connected to the outer surface of the sliding rod 6. A tension spring 8 is fixedly installed on one side of the sliding block 7. One end of the tension spring 8 is fixedly connected to the inner wall of the mounting groove. A limit rod 9 is fixedly installed on the side of the sliding block 7 near the tension spring 8. The inner wall of the circular through groove inside the lower base 3 has an annular limit groove that communicates with the outside. The limit rod 9 is adapted to the annular limit groove. In use, the limit rod 9 is connected to the annular limit groove with the cooperation of the tension spring 8, which makes the connection of the disassembly plate 5 more stable and reduces the possibility of loosening during use. When the elastic support 4 needs to be replaced later, the operator only needs to control the movement of the sliding block 7. The sliding block 7 can drive the limit rod 9 to move and stretch the tension spring 8, so that the limit rod 9 is separated from the annular limit groove on the lower base 3. Then the operator can unscrew the disassembly plate 5 to remove the elastic support 4 for replacement.

[0036] Please refer to Figure 1 and Figure 2 A slider 11 is fixedly installed on one side of the limiting rod 9. A groove adapted to the slider 11 is opened inside the disassembly plate 5. The slider 11 and the groove can limit the movement range of the limiting rod 9 and make the limiting rod 9 move more smoothly. A push plate 14 is fixedly installed on one side of the sliding block 7. An elongated sliding hole is opened on the outer side of the disassembly plate 5. The push plate 14 extends through the elongated sliding hole, and the push plate 14 can facilitate the operator to push the sliding block 7 to move.

[0037] Please refer to Figure 1 , Figure 3 and Figure 4 A rubber sealing gasket 12 is installed on the inner wall of the circular through groove inside the lower base 3. The rubber sealing gasket 12 is located on the outside of the disassembly plate 5. The rubber sealing gasket 12 can keep the disassembly plate 5 in a relatively sealed environment, reduce the impact of the external environment on the disassembly plate 5, and extend the service life of the disassembly plate 5. An inner groove is opened on the outer side of the rubber sealing gasket 12. A pull tab 15 is fixedly installed on the inner wall of the inner groove of the rubber sealing gasket 12. An elastic rope 16 is fixedly installed on the inner side of the rubber sealing gasket 12. The elastic rope 16 is fixedly connected to the inner wall of the circular through groove. The pull tab 15 can facilitate the removal of the rubber sealing gasket 12 by the staff, and the elastic rope 16 can limit the rubber sealing gasket 12 to prevent it from falling off and being lost.

[0038] The implementation principle of this utility model is as follows: Through the design of the spring body 1, upper base 2, lower base 3, elastic support 4, disassembly plate 5, sliding rod 6, sliding block 7, tension spring 8, limiting rod 9, locking block 10, slider 11, rubber sealing gasket 12, anti-corrosion layer 13, push plate 14, pull plate 15 and elastic rope 16, when an external force is applied to the spring body 1, the force distribution is more uniform due to the multi-section design of the spring body 1, which reduces the maximum stress value at a single point, thereby improving the ability of the spring body 1 to resist deformation. At the same time, the presence of the elastic support 4 helps to balance the force field inside the entire spring body 1, and can maintain good rigidity even under high pressure, reducing the creep of the spring body 1 and reducing the possibility of the spring body 1 breaking during use.

[0039] During use, the limiting rod 9, in cooperation with the tension spring 8, connects with the annular limiting groove, making the connection of the disassembly plate 5 more stable and reducing the possibility of loosening during use. When the elastic support 4 needs to be replaced later, the operator only needs to push the push plate 14 to control it. The push plate 14 can drive the sliding block 7 to move. The sliding block 7, in cooperation with the slider 11 and the sliding groove, can drive the limiting rod 9 to move and stretch the tension spring 8, so that the limiting rod 9 separates from the annular limiting groove on the lower base 3. After that, the operator can unscrew the disassembly plate 5 to remove the elastic support 4 for replacement.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 long life compression spring with variable cross section and resistance to deformation, comprising a spring body (1) and an upper seat (2) and a lower seat (3) arranged at the ends of the spring body (1), characterized in that: The spring body (1) is made of several round steel wires with different cross sections spirally wound. An elastic support (4) is provided between the upper base (2) and the lower base (3). The elastic support (4) is located inside the spring body (1). A circular through groove is opened inside the lower base (3). A disassembly plate (5) is threadedly connected to the inner wall of the circular through groove opened inside the lower base (3).

2. A compression spring of variable cross-section according to claim 1, characterized in that: The disassembly plate (5) has an installation groove inside. A sliding rod (6) is fixedly installed on the inner wall of the installation groove inside the disassembly plate (5). A sliding block (7) is slidably connected to the outer surface of the sliding rod (6). A tension spring (8) is fixedly installed on one side of the sliding block (7). One end of the tension spring (8) is fixedly connected to the inner wall of the installation groove. A limit rod (9) is fixedly installed on the side of the sliding block (7) near the tension spring (8). The inner wall of the circular through groove inside the lower base (3) has an annular limit groove that communicates with the outside. The limit rod (9) is adapted to the annular limit groove.

3. A long life compression spring of variable cross section against deformation as claimed in claim 1 wherein: The upper and lower surfaces of the elastic support (4) are fixedly equipped with a locking block (10), and the inner sides of the upper base (2) and the lower base (3) are provided with a locking groove that matches the locking block (10).

4. The deformation-resistant, long-life compression spring with a variable cross-section according to claim 2, characterized in that: A slider (11) is fixedly installed on one side of the limiting rod (9), and a groove adapted to the slider (11) is opened inside the disassembly plate (5).

5. A deformation-resistant, long-life compression spring with a variable cross-section according to claim 1, characterized in that: The inner wall of the circular through groove inside the lower base (3) is provided with a rubber sealing gasket (12), and the rubber sealing gasket (12) is located on the outside of the disassembly plate (5).

6. The deformation-resistant, long-life compression spring with a variable cross-section according to claim 1, characterized in that: The outer surface of the spring body (1) is provided with an anti-corrosion layer (13).

7. A deformation-resistant, long-life compression spring with a variable cross-section according to claim 2, characterized in that: A push plate (14) is fixedly installed on one side of the sliding block (7), and a long sliding hole is opened on the outer side of the disassembly plate (5), and the push plate (14) extends through to the outside of the long sliding hole.

8. A deformation-resistant, long-life compression spring with a variable cross-section according to claim 5, characterized in that: The outer side of the rubber sealing gasket (12) is provided with an inner groove. A pull tab (15) is fixedly installed on the inner wall of the inner groove of the rubber sealing gasket (12). An elastic rope (16) is fixedly installed on the inner side of the rubber sealing gasket (12). The elastic rope (16) is fixedly connected to the inner wall of the circular through groove.

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