Novel high-elasticity shock-absorbing light injection-molded leisure shoes
By designing a new midsole structure, combining EVA material and supercritical foam material for cushioning, the problem of insufficient shock absorption performance in traditional injection-molded casual shoes has been solved, achieving high elasticity and shock absorption effects, and improving wearing comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RUIAN HONGYUAN SHOE IND CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional injection-molded casual shoes are lacking in lightweight, shock absorption, and elasticity, and cannot effectively absorb and disperse the impact force during walking or exercise, affecting wearing comfort and potentially causing joint damage.
A novel midsole structure was designed, including a fixed sole, a compression spring, a cushioning pad, and a fixing pad. These components are bonded and sewn together between the upper and the outsole. The fixed sole is made of soft plastic, while the compression spring and cushioning pad have a double-layer structure, combining an EVA top layer with a supercritical foam bottom layer. The compression spring is secured within the bottom groove, and the fixing pad is sealed to create a high-elasticity shock absorption effect.
The shoes have improved shock absorption and high elasticity, enhanced the foot's wrap-around feel and support strength, improved wearing comfort, and reduced joint pressure, making them suitable for people who exercise or stand or walk for long periods of time.
Smart Images

Figure CN224461180U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of casual shoe technology, specifically to a novel high-elasticity, shock-absorbing, lightweight injection-molded casual shoe. Background Technology
[0002] In today's fast-paced life, people's demands for footwear are becoming increasingly diverse, focusing not only on appearance and design but also on comfort and functionality. As a type of footwear worn frequently in daily life, the performance of casual shoes directly impacts the user's experience. Injection-molded casual shoes, due to their high production efficiency and diverse styles, hold a certain market share. However, traditional injection-molded casual shoes still have many areas for improvement in terms of lightweight design, shock absorption, and elasticity.
[0003] Traditional injection-molded casual shoes struggle to effectively absorb and disperse the impact of walking or exercise. Common injection-molded soles fail to provide sufficient cushioning when facing ground reaction forces, placing significant pressure on the wearer's feet, knees, and other joints. Prolonged exposure to this condition not only reduces comfort but can also potentially damage joints. Insufficient shock absorption is a key factor influencing the choice of shoes, especially for those who enjoy sports or require prolonged standing or walking. Utility Model Content
[0004] Technical problems to be solved
[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a novel high-elasticity, shock-absorbing, lightweight injection-molded casual shoe, which can effectively solve the problems in the existing technology.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] This utility model provides a novel high-elasticity, shock-absorbing, lightweight injection-molded casual shoe, including an upper, a midsole, and an outsole. The midsole is fixed between the outsole and the upper by bonding and sewing. The midsole includes a fixed bottom bonded to the outsole, a compression spring and a cushioning pad disposed on the inner side of the fixed bottom, and a fixed pad bonded to the top of the fixed bottom.
[0008] Furthermore, the fixed base is a soft plastic structure with no top surface, and side grooves are provided at both the front and rear ends of both sides of the fixed base.
[0009] Furthermore, the compression spring is disposed on both sides of the buffer pad, and bottom grooves are provided on both sides of the bottom end of the fixing pad.
[0010] Furthermore, the fixing pad is made of soft plastic, and the compression spring is vertically engaged in the bottom groove.
[0011] Furthermore, the buffer pad has a double-layer structure, with the top layer being EVA material and the bottom layer being supercritical foam material, and the two are fixedly connected by adhesive.
[0012] Furthermore, the length of the bottom groove is greater than the length of the compression spring.
[0013] The technical solution provided by this utility model has the following advantages compared with the known public technology:
[0014] This invention features a novel midsole structure that is fixedly connected to the upper and outsole. The compression springs and cushioning pads within the fixed bottom of the midsole structure can be bonded to the inner side of the outsole and sealed by the fixed pads. The bottom groove structure of the fixed pads can engage with the compression springs on both sides to prevent the springs from shifting or wobbling. The cushioning pad in the middle of the compression springs has a double-layer spliced structure. The upper layer of EVA material, with its soft and elastic properties, cushions the downward pressure on the foot and improves the feeling of being wrapped when pressed down. The supercritical foam material at the bottom is a hard elastic material that can effectively improve the structural friction and support strength, and increase the rebound speed of the bottom and outsole when compressed. The combination of soft and hard materials, along with the compression spring structures on both sides, can improve the shock absorption and high elasticity of this structure. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the midsole and outsole of this utility model;
[0018] Figure 3 This is a structural exploded view of the insole in this utility model;
[0019] Figure 4 This is an exploded view of the structure of the buffer pad and compression spring in this utility model;
[0020] Figure 5 This is a schematic diagram of the bottom structure of the fixing pad in this utility model.
[0021] The numbers in the diagram represent: 1. Upper; 2. Midsole; 21. Support pad; 211. Outsole groove; 22. Support sole; 23. Side groove; 24. Compression spring; 25. Cushioning pad; 3. Outsole. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0023] The present invention will be further described below with reference to the embodiments.
[0024] Example: A novel high-elasticity, shock-absorbing, lightweight injection-molded casual shoe, see attached figure. Figure 1 -Appendix Figure 5 The shoe includes an upper 1, a midsole 2, and an outsole 3. The midsole 2 is fixed between the outsole 3 and the upper 1 by gluing and sewing. The midsole 2 includes a fixed bottom 22 glued to the outsole 3, a compression spring 24 and a cushioning pad 25 disposed on the inner side of the fixed bottom 22, and a fixed pad 21 glued to the top of the fixed bottom 22.
[0025] The fixed bottom 22 is a soft plastic structure without a top surface. Side grooves 23 are provided at both the front and rear ends of the fixed bottom 22. Compression springs 24 are located on both sides of the cushioning pad 25, and bottom grooves 211 are provided on both sides of the bottom end of the fixed pad 21. The fixed pad 21 is made of soft plastic, and the compression springs 24 are vertically inserted into the bottom grooves 211. The cushioning pad 25 has a double-layer structure, with an EVA top layer and a supercritical foam bottom layer, which are bonded together. The length of the bottom groove 211 is greater than the length of the compression spring 24. A novel midsole 2 structure is designed to be fixedly connected to the upper 1 and outsole 3. The compression springs 24 within the fixed bottom 22 of the midsole 2 structure... The cushioning pad 25 structure can be bonded to the inside of the outsole 3 and sealed by the fixing pad 21. In the fixing pad 21, the bottom groove 211 structure at its bottom end can be docked and locked with the compression springs 24 on both sides to prevent the compression springs 24 from shifting or shaking. The cushioning pad 25 in the middle of the compression springs 24 is a double-layer spliced structure. The upper layer of EVA material can use its soft and elastic properties to cushion the downward pressure of the foot and improve the wrapping feeling when pressing down. The supercritical foam material at the bottom is a hard elastic material, which can effectively improve the structural friction and support strength, and improve the rebound speed of the bottom and outsole 3 when compressed. The combination of soft and hard materials, together with the compression springs 24 on both sides, can improve the shock absorption and high elasticity of this structure.
[0026] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.
Claims
1. A novel high-elasticity, shock-absorbing, lightweight injection-molded casual shoe, characterized in that, The shoe includes an upper (1), a midsole (2) and an outsole (3). The midsole (2) is fixed between the outsole (3) and the upper (1) by gluing and sewing. The midsole (2) includes a fixed bottom (22) glued to the outsole (3), a compression spring (24) and a cushioning pad (25) disposed on the inner side of the fixed bottom (22). A fixed pad (21) is glued to the top of the fixed bottom (22).
2. The novel high-elasticity, shock-absorbing, lightweight injection-molded casual shoe according to claim 1, characterized in that, The fixed base (22) is a soft plastic structure with no top surface, and side grooves (23) are provided at both the front and rear ends of both sides of the fixed base (22).
3. The novel high-elasticity, shock-absorbing, lightweight injection-molded casual shoe according to claim 1, characterized in that, The compression spring (24) is disposed on both sides of the buffer pad (25), and the bottom end of the fixing pad (21) is provided with bottom grooves (211) on both sides.
4. A novel high-elasticity, shock-absorbing, lightweight injection-molded casual shoe according to claim 1, characterized in that, The fixing pad (21) is made of soft plastic, and the compression spring (24) is vertically locked in the bottom groove (211).
5. A novel high-elasticity, shock-absorbing, lightweight injection-molded casual shoe according to claim 4, characterized in that, The buffer pad (25) has a double-layer structure, with the top layer being EVA material and the bottom layer being supercritical foam material. The two are fixedly connected by adhesive.
6. A novel high-elasticity, shock-absorbing, lightweight injection-molded casual shoe according to claim 4, characterized in that, The length of the bottom groove (211) is greater than the length of the compression spring (24).