Anti-cracking long-life rubber shoes
By incorporating connecting blocks and grooves, reinforcing blocks, and edging in the rubber shoes, the problem of poor connection strength between the upper and the sole is solved, resulting in a longer service life and higher waterproof performance, while maintaining lightweight and comfort.
Patent Information
- Application Number
- CN202522395511.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-12
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-11-12
AI Technical Summary
The connection between the upper and sole of existing rubber shoes is weak, making them prone to cracking after prolonged wear and affecting their lifespan.
The design employs an embedded connecting block and connecting groove structure, combined with reinforcing blocks and edge binding design, to enhance the connection strength between the upper and the sole. Furthermore, the design of curved surfaces, raised strips, and sliding grooves improves assembly precision and sealing.
It significantly extends the lifespan of rubber shoes, enhances connection reliability and waterproof performance, while maintaining lightweight and comfort, reducing production complexity and improving product consistency.
Smart Images
Figure CN223667355U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to shoes technical field especially is related to a kind of anti-cracking long life rubber shoes. BACKGROUND
[0002] Rubber shoes are shoe products made of rubber for shoe sole or upper, which can be divided into cloth, full rubber shoes and injection molded shoes according to material, and rain boots belong to rubber shoes, which are waterproof shoes made of rubber or plastic. The structure includes upper, sole and accessory parts, and the sole is usually made of natural rubber and styrene-butadiene rubber.
[0003] Rain boots prevent liquid from penetrating through sealing structure, and have high-cylinder shape to enhance protection effect. However, the connection strength between the upper and the sole of the rain boots of the prior art is poor, and the structure is simple, so the shoes are easy to crack after long wearing, which greatly affects the service life of rubber shoes.
[0004] The utility model aims at the above-mentioned technical problem and proposes a corresponding solution. UTILITY MODEL CONTENT
[0005] The utility model aims at overcoming the shortcomings and deficiencies of the prior art, and provides an anti-cracking long life rubber shoe. The utility model optimizes the connection structure of the upper and the sole by embedding the connecting block and the connecting groove, has better connection strength and anti-cracking performance, and prolongs the service life of rubber shoes.
[0006] The utility model adopts the following technical scheme: an anti-cracking long life rubber shoe includes an upper and a sole. The upper is connected to the sole through a connecting block. The connecting block is arranged on the bottom surface of the upper and is integrally formed with the upper. The sole is recessed with a connecting groove matched with the connecting block. The upper includes a toe part and a heel part. One end of the connecting block close to the toe part is wide, and the other end is narrow. The width of the wide end is greater than that of the narrow end, and the thickness of the wide end protruding from the upper is less than that of the narrow end. The end face of the connecting block close to the sole is arc-shaped. The edges on both sides of the arc-shaped face are protruded with protruding strips. The inner walls on both sides of the connecting groove are recessed with sliding grooves matched with the protruding strips.
[0007] The end of the narrow end is further provided with a protruding column, and the diameter of the protruding column is greater than the width of the narrow end.
[0008] The side walls of the connecting block are further provided with at least one arc-shaped protruding block respectively, and the inner walls on both sides of the connecting groove are further provided with at least one arc-shaped limiting groove matched with the arc-shaped protruding block respectively.
[0009] A reinforcing block is further arranged between the upper and the sole, and the upper is further connected to the sole through an edge covering. The edge covering surrounds the outside of the connecting gap between the upper and the sole.
[0010] The heel is provided with a first groove for embedding the reinforcing block, the sole is provided with a second groove for embedding the reinforcing block, one end of the reinforcing block is embedded in the first groove and the other end is embedded in the second groove at the same time, and the edge wrapping is further wrapped outside the reinforcing block.
[0011] At least one plug pin is further protruded in the first groove, at least one plug barrel for inserting the plug pin is arranged in the second groove, at least one through hole is arranged on the reinforcing block, and the plug pin and the plug barrel are respectively inserted into the through hole from both ends to form an inserting cooperation.
[0012] The depth of the plug barrel is greater than the length of the plug pin.
[0013] The material of the reinforcing block is thermoplastic polyurethane elastomer, and the material of the edge wrapping is polyvinyl chloride.
[0014] The beneficial effects of the utility model are as follows: the utility model discloses a connecting block and a connecting groove structure matched on the upper and the sole are integrally formed, the mechanical combination between the upper and the sole is greatly enhanced, the interface cracking problem caused by long-term bending or external force is avoided, the service life of the rubber shoes is significantly prolonged, the connecting block is designed as gradually changing from wide to narrow from the toe to the heel, the stress is more evenly transmitted to the sole according to the ergonomics and the stress law of the foot during walking, the local stress concentration is reduced, the cracking risk is further inhibited, the end face of the connecting block is arranged as an arc surface and provided with convex strips on both sides, cooperates with the sliding groove structure of the inner wall of the connecting groove, not only plays a guiding and positioning role during assembly, ensures accurate alignment, but also forms multiple sealing barriers through concave-convex fitting, effectively prevents liquid from seeping from the upper-sole connecting part, improves the waterproof reliability of the product, and the structure also reduces the production process complexity, is favorable for improving production efficiency and product consistency, enhances the connection reliability while avoiding using too many reinforcing or rigid reinforcing methods, maintains the lightness and flexibility of the rubber shoes, and gives consideration to long service life and comfortable wearing experience. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings obtained according to these drawings without creative labor still belong to the scope of the utility model.
[0016] Figure 1 It is a structural schematic diagram of the anti-cracking long service life rubber shoes of the utility model;
[0017] Figure 2 It is an explosion schematic diagram of the utility model;
[0018] Figure 3 This is a partial schematic diagram of the shoe upper in this utility model;
[0019] Figure 4 This is a schematic diagram of the sole structure in this utility model;
[0020] Figure 5 This is a partially enlarged cross-sectional view of the reinforcing block in this utility model;
[0021] In the diagram, 1-shoe upper, 2-shoe sole, 3-connecting block, 4-connecting groove, 5-toe of shoe, 6-heel of shoe, 7-wide edge, 8-narrow edge, 9-arc surface, 10-protruding strip, 11-sliding groove, 12-protruding column, 13-arc protrusion, 14-arc limiting groove, 15-reinforcing block, 16-edging, 17-first groove, 18-second groove, 19-pin, 20-insertion tube, 21-through hole. Detailed Implementation
[0022] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.
[0023] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.
[0024] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.
[0025] like Figures 1 to 5 As shown, this is an embodiment of the present invention: a crack-resistant, long-life rubber shoe, including an upper 1 and a sole 2. The upper 1 is connected to the sole 2 via a connecting block 3. The connecting block 3 is disposed on the bottom surface of the upper 1 and is integrally formed with the upper 1. The sole 2 has a recessed connecting groove 4 that matches the connecting block 3. The upper 1 includes a toe 5 and a heel 6. The end of the connecting block 3 near the toe 5 is a wide side 7 and the other end is a narrow side 8. The width of the wide side 7 is greater than that of the narrow side 8, and the thickness of the wide side 7 protruding from the upper 1 is less than that of the narrow side 8. The end face of the connecting block 3 near the sole 2 is an arc-shaped surface 9. The edges on both sides of the arc-shaped surface 9 are raised with ridges 10. The inner walls on both sides of the connecting groove 4 are recessed with grooves 11 that match the ridges 10.
[0026] The beneficial effects of such arrangement are as follows: the connecting block integrated with the upper and the connecting groove structure on the sole greatly enhance the mechanical bonding force between the upper and the sole, effectively avoiding the interface cracking problem caused by long-term bending or external force, thereby significantly prolonging the service life of the rubber shoes, the connecting block adopts a gradual design with a wide side near the toe part and a narrow side near the heel part, which conforms to the ergonomics and the stress law of the foot during walking, so that the stress is more evenly transmitted to the sole, reducing local stress concentration and further inhibiting the cracking risk, the end face of the connecting block is provided with an arc surface and protrusions on both sides, cooperating with the sliding groove structure of the inner wall of the connecting groove, not only playing a guiding and positioning role during assembly to ensure accurate alignment, but also forming multiple sealing barriers through concave-convex fitting to effectively prevent liquid from seeping from the upper-sole connection, improving the waterproof reliability of the product, and this structure also reduces the complexity of the production process, which is conducive to improving production efficiency and product consistency, while enhancing connection reliability, avoiding the use of excessive reinforcement or rigid reinforcement methods, maintaining the lightness and flexibility of the rubber shoes, and balancing the long service life and comfortable wearing experience.
[0027] Further arrangement, the end of the narrow side 8 is also provided with a protruding column 12, and the diameter of the protruding column 12 is greater than the width of the narrow side 8.
[0028] The beneficial effects of such arrangement are as follows: the connecting block integrated with the upper and the connecting groove structure on the sole greatly enhance the mechanical bonding force between the upper and the sole, effectively avoiding the interface cracking problem caused by long-term bending or external force, thereby significantly prolonging the service life of the rubber shoes, the connecting block adopts a gradual design with a wide side near the toe part and a narrow side near the heel part, which conforms to the ergonomics and the stress law of the foot during walking, so that the stress is more evenly transmitted to the sole, reducing local stress concentration and further inhibiting the cracking risk, the end face of the connecting block is provided with an arc surface and protrusions on both sides, cooperating with the sliding groove structure of the inner wall of the connecting groove, not only playing a guiding and positioning role during assembly to ensure accurate alignment, but also forming multiple sealing barriers through concave-convex fitting to effectively prevent liquid from seeping from the upper-sole connection, improving the waterproof reliability of the product, and this structure also reduces the complexity of the production process, which is conducive to improving production efficiency and product consistency, while enhancing connection reliability, avoiding the use of excessive reinforcement or rigid reinforcement methods, maintaining the lightness and flexibility of the rubber shoes, and balancing the long service life and comfortable wearing experience.
[0029] Further arrangement, the end of the narrow side 8 is also provided with a protruding column 12, and the diameter of the protruding column 12 is greater than the width of the narrow side 8.
[0030] The beneficial effects of such an arrangement are as follows: by arranging arc-shaped protrusions on both sides of the connecting block to cooperate with the arc-shaped limiting grooves in the connecting groove, lateral mechanical locking force is added to the original up-down fitting, effectively limiting the movement or shaking of the connecting block in any direction in the shoe groove, making the upper and the sole a very stable whole, the arc-shaped protrusions and the limiting grooves will produce a clear resistance change when assembled in place, providing a clear tactile sensation for the assembler, ensuring that each connecting block has been installed in place, greatly improving the consistency and reliability of the assembly quality.
[0031] Further arrangement, the upper 1 and the sole 2 are also clamped with a reinforcing block 15, and the upper 1 is connected with the sole 2 through the edge covering 16, and the edge covering 16 surrounds the outside of the connecting gap between the upper 1 and the sole 2.
[0032] The beneficial effects of such an arrangement are as follows: by adding internal reinforcing blocks and external edge coverings, a triple protection system of "internal reinforcement-main connection-external sealing" is constructed. The reinforcing block as the internal framework significantly enhances the overall rigidity and load-bearing capacity of the upper-sole joint, effectively disperses and absorbs the main stress, while the edge covering as the external sealing layer provides reliable secondary protection, greatly improving the overall durability of the product. The edge covering completely covers and seals the connecting gap between the upper and the sole, fundamentally eliminating the only possible path for liquid to penetrate from the external environment, making the waterproof sealing performance of the product leap forward, far exceeding traditional rain boots that rely solely on glue or structural sealing. The edge covering process integrates the upper and the sole into one, not only physically strengthening the connection and making the structure more stable, but also giving the product a unified, beautiful and smooth appearance, hiding the internal connecting gap and improving the quality of the product.
[0033] Further arrangement, the heel part 6 is provided with a first groove 17 for embedding the reinforcing block 15, the sole 2 is provided with a second groove 18 for embedding the reinforcing block 15, one end of the reinforcing block 15 is embedded in the first groove 17 and the other end is embedded in the second groove 18 at the same time, and the edge covering 16 also surrounds the outside of the reinforcing block 15.
[0034] The beneficial effects of such an arrangement are as follows: by setting the first groove in the heel part and the second groove on the sole, the reinforcing block is accurately positioned and clamped between the upper and the sole, forming a mortise and tenon type three-dimensional support structure. This design tightly integrates the reinforcing block, the upper and the sole into a rigid whole, achieving extraordinary structural integration and stability, greatly improving the impact resistance and anti-deformation ability of the heel part, which is the most vulnerable area. The edge covering also cooperates with the reinforcing block to further disperse stress.
[0035] Further, at least one pin 19 is arranged in the first groove 17, and at least one insertion cylinder 20 is arranged in the second groove 18 for the pin 19 to be inserted into, and at least one through hole 21 is arranged on the reinforcing block 15, and the pin 19 and the insertion cylinder 20 are respectively inserted into the through hole 21 from both ends to form an insertion fit.
[0036] The beneficial effects of such an arrangement are as follows: through the precise insertion fit of the pin, the through hole, and the insertion cylinder, on the basis of the groove fitting, the upper, the reinforcing block, and the sole are provided with absolute reliable radial positioning and rigid connection. This structure ensures that all components are accurately aligned during assembly, and like a "pin", the three are tightly locked into an almost inseparable whole, completely eliminating the possibility of relative displacement or loosening between components, making the structural integrity and rigidity reach the extreme, and the insertion fit structure constitutes the core stress backbone throughout the entire connection part, which can extremely efficiently transmit and resist the huge shear force and torsion force generated during walking and jumping, maximally dispersing local stress to the entire sole and upper, thereby greatly enhancing the mechanical strength and anti-deformation ability of the heel, which is the most critical stress area, and revolutionarily improving the durability.
[0037] Further, the depth of the insertion cylinder 20 is greater than the length of the pin 19.
[0038] The beneficial effects of such an arrangement are as follows: this depth difference design avoids rigid contact between the top end of the pin and the bottom of the insertion cylinder, providing a buffer allowance for processing tolerance and thermal expansion and contraction, effectively eliminating assembly internal stress caused by absolute deadlocking, preventing micro-cracks or structural damage that may occur due to stress concentration during long-term use, improving long-term reliability, and when under pressure, the pin can be further inserted into the insertion cylinder, and the depth difference provides a space for movement, forming a buffering effect.
[0039] Further, the material of the reinforcing block 15 is thermoplastic polyurethane elastomer, and the material of the edge 16 is polyvinyl chloride.
[0040] The beneficial effects of such an arrangement are as follows: thermoplastic polyurethane elastomer (TPU) is a type of elastomer that can be plasticized by heating and dissolved by solvent, with excellent comprehensive properties such as high strength, high toughness, wear resistance, and oil resistance, good processing performance, providing high connection strength while also providing a cushioning effect, and polyvinyl chloride (PVC) has good plasticity, flexibility, and sealing effect, providing perfect external covering and sealing, and through modification, the performance of PVC can be further improved, further ensuring the long service life of the product from the material level.
[0041] The above disclosed is only the preferred embodiment of the present application, of course, cannot be limited by this to limit the scope of the present application, therefore, the equivalent changes made according to the present application claims, still belong to the scope covered by the present application.
Claims
1. A crack-resistant, long-life rubber shoe, comprising an upper (1) and a sole (2), characterized in that: The upper (1) is connected to the sole (2) via a connecting block (3). The connecting block (3) is located on the bottom surface of the upper (1) and is integrally formed with the upper (1). The sole (2) has a recessed connecting groove (4) that matches the connecting block (3). The upper (1) includes a toe (5) and a heel (6). The connecting block (3) has a wide side (7) at one end near the toe (5) and a narrow side (8) at the other end. The width of the wide side (7) is greater than that of the narrow side (8), and the thickness of the wide side (7) protruding from the upper (1) is less than that of the narrow side (8). The end face of the connecting block (3) near the sole (2) is an arc-shaped surface (9). The edges on both sides of the arc-shaped surface (9) are raised with ridges (10). The inner walls on both sides of the connecting groove (4) are recessed with grooves (11) that match the ridges (10).
2. The anti-cracking, long-life rubber shoes according to claim 1, characterized in that: The end of the narrow side (8) is also provided with a protruding post (12), the diameter of which is greater than the width of the narrow side (8).
3. The anti-cracking, long-life rubber shoes according to claim 1, characterized in that: The two side walls of the connecting block (3) are provided with at least one arc-shaped protrusion (13), and the two inner walls of the connecting groove (4) are provided with at least one arc-shaped limiting groove (14) that is adapted to the arc-shaped protrusion (13).
4. The anti-cracking, long-life rubber shoes according to claim 1, characterized in that: A reinforcing block (15) is also sandwiched between the upper (1) and the sole (2), and the upper (1) is also connected to the sole (2) by a binding edge (16), which surrounds the outside of the connection gap between the upper (1) and the sole (2).
5. The anti-cracking, long-life rubber shoes according to claim 4, characterized in that: The heel part (6) is provided with a first groove (17) for the reinforcing block (15) to be embedded, and the sole (2) is provided with a second groove (18) for the reinforcing block (15) to be embedded. One end of the reinforcing block (15) is embedded in the first groove (17) and the other end is simultaneously embedded in the second groove (18). The edging (16) also surrounds the outside of the reinforcing block (15).
6. The anti-cracking, long-life rubber shoes according to claim 5, characterized in that: The first groove (17) also has at least one protruding pin (19), the second groove (18) has at least one insert (20) for the pin (19) to be inserted into, the reinforcing block (15) has at least one through hole (21), and the pin (19) and the insert (20) extend into the through hole (21) from both ends to form an insertion fit.
7. The anti-cracking, long-life rubber shoes according to claim 6, characterized in that: The depth inside the insert (20) is greater than the length of the pin (19).
8. The anti-cracking, long-life rubber shoes according to claim 4, characterized in that: The reinforcing block (15) is made of thermoplastic polyurethane elastomer, and the edging (16) is made of polyvinyl chloride.