Tension spring round hook damage, breakage, and deformation countermeasures

By simply changing the shape of the hook, the durability of the spring is improved.

The most common issue we receive inquiries about regarding springs is the breakage or damage of tension springs. In particular, most cases involve the hook or the part where it catches breaking. Tension springs have a characteristic where stress (load) concentrates at the hook, which can lead to breakage or deformation. The photo shows a spring designed and prototyped by our company in response to inquiries, aimed at preventing breakage. We considered the specifications of the spring to ensure that the stress (load) on the hook does not exceed the material's strength, and we adopted a "large round hook with a bending radius." The spring's force adjustment (spring constant, load) has not been changed. If the durability of the "large round hook with a bending radius" is still insufficient, we recommend adopting a "tapered round hook," although this will slightly increase costs. (Please refer to the related links.) If you are experiencing issues with spring breakage, damage, or deformation, please feel free to consult us. If you send us broken samples, we will propose improvement measures. We look forward to your inquiries. Tsuruoka Spring Co., Ltd. Contact: Ujiie Phone: 0235-22-0407 FAX: 0235-22-0546 Email: web@tohj.com

Contract manufacturing