Anti-fatigue metal elastic sheet structure with long reinforcing ribs

Abstract

The utility model discloses an anti-fatigue metal elastic sheet structure with a long reinforcing rib, which comprises a metal elastic sheet main body, the metal elastic sheet main body is provided with a fixed end and a free end, and the surface of the metal elastic sheet main body is provided with at least one long reinforcing rib along the length direction in an extending manner. Two ends of the long reinforcing rib are respectively connected with the fixed end and the free end, and the length of the long reinforcing rib is greater than two thirds of the length of the metal elastic sheet main body. Stress is dispersed through the long reinforcing ribs, stress concentration is reduced through the transition fillets, the anti-fatigue performance is remarkably improved through cooperation of the force unloading holes and the corrugated structure, and the service life is prolonged. The reinforcing ribs and the main body are integrally formed and reasonable in section design, the overall strength is enhanced, and the strength and elasticity are balanced through symmetrical layout and thickness parameters. The nickel-phosphorus alloy plating layer at the contact part improves the wear resistance and the conductivity, and the mounting hole reinforcing boss ensures the stable mounting.

Description

Technical Field

[0001] This utility model relates to the field of metal spring technology, specifically to a fatigue-resistant metal spring structure with elongated reinforcing ribs. Background Technology

[0002] Metal springs, as key components in electronics, mechanics, and other fields, must withstand repeated bending and compression loads over long periods. Their fatigue resistance and structural stability directly affect equipment reliability. In existing technologies, traditional springs are mostly single-plate structures, prone to stress concentration under load, especially in the transition area between the fixed and free ends. This leads to fatigue fracture after prolonged use and a short service life. Furthermore, conventional springs struggle to balance strength and elasticity. Simply increasing thickness to improve strength results in decreased elasticity, failing to meet the deformation requirements of precision equipment; conversely, reducing thickness to achieve high elasticity leads to insufficient structural strength and a tendency for permanent deformation. Utility Model Content

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides a fatigue-resistant metal spring sheet structure with long reinforcing ribs, which can effectively solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A fatigue-resistant metal spring sheet structure with a long reinforcing rib includes a metal spring sheet body, the metal spring sheet body having a fixed end and a free end, and at least one long reinforcing rib extending along the length direction on the surface of the metal spring sheet body, the two ends of the long reinforcing rib being connected to the fixed end and the free end respectively, and the length of the long reinforcing rib being greater than two-thirds of the length of the metal spring sheet body.

[0006] The elongated reinforcing ribs are symmetrically arranged along the longitudinal central axis of the metal spring body, and the width of the elongated reinforcing ribs gradually narrows from the fixed end to the free end.

[0007] As a further description of the above technical solution, the cross-sectional shape of the elongated reinforcing rib is rectangular, trapezoidal, or inverted T-shaped, and the height of the elongated reinforcing rib is 1.5-3 times the thickness of the metal spring sheet body.

[0008] As a further description of the above technical solution, the elongated reinforcing rib is integrally formed with the metal spring body, and the two sides of the elongated reinforcing rib form a transition rounded corner with the metal spring body, the radius of the transition rounded corner being 0.5-2mm.

[0009] As a further description of the above technical solution, a plurality of stress-relieving holes are symmetrically arranged on both sides of the elongated reinforcing rib on the metal spring body, and the stress-relieving holes are evenly distributed along the length direction of the metal spring body.

[0010] As a further description of the above technical solution, the surface of the elongated reinforcing rib is provided with at least one corrugated structure extending along its length direction, the peak height of the corrugated structure being 0.2-0.8 mm and the wavelength being 1-3 mm.

[0011] As a further description of the above technical solution, the free end of the metal spring body is provided with a contact portion, and the surface of the contact portion is covered with a nickel-phosphorus alloy plating layer, the thickness of which is 5-15μm.

[0012] As a further description of the above technical solution, the fixed end of the metal spring body is provided with a mounting hole, and the edge of the mounting hole is provided with a reinforcing boss, the height of which is 0.3-1mm.

[0013] As a further description of the above technical solution, the thickness of the metal spring body is 0.1-0.5mm, and the thickness of the long reinforcing rib is 0.2-0.8mm.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The fatigue-resistant metal spring sheet structure with elongated reinforcing ribs of this utility model has at least one of the following beneficial effects during use:

[0016] By using long reinforcing ribs to disperse stress and rounded corners to reduce stress concentration, combined with stress-relieving holes and a corrugated structure, fatigue resistance is significantly improved, extending service life. The reinforcing ribs are integrally molded with the main body, and the rational cross-sectional design enhances overall strength; their symmetrical layout and thickness parameters balance strength and elasticity. A nickel-phosphorus alloy plating on the contact area improves wear resistance and conductivity, while reinforced bosses in the mounting holes ensure stable installation. This overall structure solves the problems of fatigue and difficulty in balancing strength and elasticity inherent in traditional spring clips, making it suitable for high-precision, high-frequency operating scenarios. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a fatigue-resistant metal spring sheet structure with elongated reinforcing ribs according to the present invention.

[0018] Figure 2 This is a schematic diagram of the first side view of a fatigue-resistant metal spring sheet structure with elongated reinforcing ribs according to the present invention.

[0019] Figure 3 This is a schematic diagram of the second side of a fatigue-resistant metal spring sheet structure with elongated reinforcing ribs according to the present invention.

[0020] Numbering on the map:

[0021] 1. Metal spring body; 2. Long reinforcing rib; 3. Free end; 4. Fixed end; 5. Contact part; 6. Force relief hole; 7. Corrugated structure; 8. Reinforcing boss; 9. Mounting hole; 10. Transition fillet. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-3 As shown, this utility model provides a fatigue-resistant metal spring sheet structure with an elongated reinforcing rib 2, including a metal spring sheet body 1. The metal spring sheet body 1 has a fixed end 4 and a free end 3. At least one elongated reinforcing rib 2 is provided on the surface of the metal spring sheet body 1 along its length direction. The two ends of the elongated reinforcing rib 2 are respectively connected to the fixed end 4 and the free end 3, and the length of the elongated reinforcing rib 2 is greater than two-thirds of the length of the metal spring sheet body 1.

[0024] The long reinforcing rib 2 extends along the length of the metal spring body 1, connecting the fixed end 4 and the free end 3 at both ends. When the spring is subjected to bending deformation, the reinforcing rib can disperse the stress along its own length, preventing stress concentration in a certain area. Its symmetrical arrangement along the longitudinal central axis ensures balanced stress on both sides of the spring, preventing skewing or damage caused by uneven stress. The width gradually narrows from the fixed end 4 to the free end 3 because the free end 3 experiences greater stress and more significant deformation during operation. This design allows for more reasonable stress dispersion at the free end 3, improving the overall bending resistance of the spring.

[0025] The elongated reinforcing rib 2 is symmetrically arranged along the longitudinal central axis of the metal spring body 1, and the width of the elongated reinforcing rib 2 gradually narrows from the fixed end 4 to the free end 3.

[0026] The integral molding of the reinforcing ribs and the main body of the spring ensures the firmness of the connection. The design of reinforcing ribs with different cross-sectional shapes and heights, as well as the reinforcing boss 8, enhances the structural strength of each part of the spring, enabling the spring to withstand greater external forces without easily deforming or being damaged.

[0027] The elongated reinforcing ribs 2 are symmetrically arranged along the longitudinal central axis, ensuring balanced force on both sides of the spring sheet and preventing skewing or damage caused by uneven force, thus guaranteeing the stability of the spring sheet during operation. The thickness parameters of the elongated reinforcing ribs 2 and the design of the corrugated structure 7 optimize the elastic properties of the spring sheet while ensuring its strength, enabling it to better adapt to deformation requirements during operation and improving its working efficiency.

[0028] Furthermore, the elongated reinforcing rib 2 has a rectangular, trapezoidal, or inverted T-shaped cross-section, and its height is 1.5-3 times the thickness of the metal spring sheet body 1. The cross-sectional shape of the elongated reinforcing rib 2—rectangular, trapezoidal, or inverted T-shaped—serves differently when the spring sheet is under stress. A rectangular cross-section provides more uniform strength support; a trapezoidal cross-section allows stress to transition more smoothly from the spring sheet body to the reinforcing rib; and an inverted T-shaped cross-section enhances the connection stability between the reinforcing rib and the spring sheet body. Its height, being 1.5-3 times the thickness of the metal spring sheet body 1, is a proportionate design that significantly improves the structural strength while ensuring a certain degree of elasticity in the spring sheet, making it less prone to permanent deformation under large external forces.

[0029] Furthermore, the elongated reinforcing rib 2 is integrally formed with the metal spring body 1, and the two side edges of the elongated reinforcing rib 2 form a transition fillet 10 with the metal spring body 1, the radius of which is 0.5-2mm.

[0030] The elongated reinforcing rib 2 is integrally formed with the metal spring body 1, ensuring no connection gaps between the two and avoiding breakage under stress due to weak connections, thus enhancing the overall structural stability of the spring. The transition fillet 10 between the two edges of the reinforcing rib and the spring body has a radius of 0.5-2mm, allowing for a smooth stress transition at the connection point and reducing stress concentration. Because stress concentration easily occurs at right-angle connections, the transition fillet 10 effectively disperses this stress, thereby improving the fatigue resistance of the spring.

[0031] Furthermore, the metal spring body 1 is symmetrically provided with multiple stress-relieving holes 6 on both sides of the elongated reinforcing rib 2, and the stress-relieving holes 6 are evenly distributed along the length direction of the metal spring body 1. When the spring body undergoes bending deformation, the stress-relieving holes 6 can release some stress through their own deformation, further reducing stress accumulation on the spring body, avoiding fatigue damage caused by long-term stress concentration, and improving the fatigue life of the spring.

[0032] Furthermore, the surface of the elongated reinforcing rib 2 is provided with at least one corrugated structure 7 extending along its length. The corrugated structure 7 has a crest height of 0.2-0.8 mm and a wavelength of 1-3 mm. When the spring is subjected to stress and deformation, the corrugated structure 7 can absorb part of the impact force through its own compression and extension, increasing the elastic deformation capacity of the reinforcing rib, thereby further improving the impact resistance and fatigue resistance of the spring.

[0033] Furthermore, the free end 3 of the metal spring body 1 is provided with a contact portion 5, the surface of which is covered with a nickel-phosphorus alloy plating layer with a thickness of 5-15 μm. The nickel-phosphorus alloy has good wear resistance and conductivity. When the spring contacts other components, the plating layer reduces wear on the contact portion 5, extends its service life, and ensures good conductivity, thus guaranteeing the reliability of the spring's electrical contact.

[0034] Furthermore, the fixed end 4 of the metal spring body 1 is provided with a mounting hole 9, and the edge of the mounting hole 9 is provided with a reinforcing boss 8, the height of which is 0.3-1mm.

[0035] Furthermore, the thickness of the metal spring body 1 is 0.1-0.5 mm, and the thickness of the elongated reinforcing rib 2 is 0.2-0.8 mm. This thickness design ensures that the spring has sufficient elasticity to meet its deformation requirements during operation, while also ensuring that the spring as a whole has a certain structural strength, making it less prone to damage during long-term use.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fatigue-resistant metal spring sheet structure with elongated reinforcing ribs, characterized in that: The device includes a metal spring body, which has a fixed end and a free end. At least one long reinforcing rib is provided on the surface of the metal spring body along its length direction. The two ends of the long reinforcing rib are respectively connected to the fixed end and the free end, and the length of the long reinforcing rib is greater than two-thirds of the length of the metal spring body. The elongated reinforcing ribs are symmetrically arranged along the longitudinal central axis of the metal spring body, and the width of the elongated reinforcing ribs gradually narrows from the fixed end to the free end.

2. The fatigue-resistant metal spring sheet structure with elongated reinforcing ribs according to claim 1, characterized in that: The cross-sectional shape of the elongated reinforcing rib is rectangular, trapezoidal, or inverted T-shaped, and the height of the elongated reinforcing rib is 1.5-3 times the thickness of the metal spring sheet body.

3. The fatigue-resistant metal spring sheet structure with elongated reinforcing ribs according to claim 1, characterized in that: The elongated reinforcing rib is integrally formed with the metal spring body, and the two sides of the elongated reinforcing rib form a transition rounded corner with the metal spring body, the radius of which is 0.5-2mm.

4. The fatigue-resistant metal spring sheet structure with elongated reinforcing ribs according to claim 1, characterized in that: Multiple stress-relieving holes are symmetrically arranged on both sides of the long reinforcing rib on the metal spring body, and the stress-relieving holes are evenly distributed along the length direction of the metal spring body.

5. The fatigue-resistant metal spring sheet structure with elongated reinforcing ribs according to claim 1, characterized in that: The surface of the elongated reinforcing rib is provided with at least one corrugated structure extending along its length, the corrugated structure having a peak height of 0.2-0.8 mm and a wavelength of 1-3 mm.

6. The fatigue-resistant metal spring sheet structure with elongated reinforcing ribs according to claim 1, characterized in that: The free end of the metal spring body is provided with a contact portion, and the surface of the contact portion is covered with a nickel-phosphorus alloy plating layer with a thickness of 5-15 μm.

7. The fatigue-resistant metal spring sheet structure with elongated reinforcing ribs according to claim 1, characterized in that: The fixed end of the metal spring body is provided with a mounting hole, and the edge of the mounting hole is provided with a reinforcing boss, the height of which is 0.3-1mm.

8. The fatigue-resistant metal spring sheet structure with elongated reinforcing ribs according to claim 1, characterized in that: The thickness of the metal spring body is 0.1-0.5mm, and the thickness of the long reinforcing rib is 0.2-0.8mm.

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