A composite sole structure and shoe
By combining the sole, middle, and fixing pads into one unit and using a locking block structure to improve the tightness of the connection, the cracking problem of uneven stress between the soles is solved, resulting in a more stable sole structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG LEJUN NEW MATERIALS CO LTD
- Filing Date
- 2025-10-20
- Publication Date
- 2026-07-28
AI Technical Summary
Existing shoe sole structures are prone to cracking when the stress is uneven between different layers, especially when there are temperature changes or the adhesive strength of the glue weakens, which can lead to separation between the layers.
The composite sole structure integrates the insole, middle insole, and fixing insole into one unit. The lower and upper locking blocks limit the connection in the middle hole, improving the tightness of the connection and preventing slippage and cracking between the insoles.
It enhances the stability of the sole structure, prevents interlayer cracking, and improves service life and safety.
Smart Images
Figure CN224556926U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shoe soles, and more particularly to a composite shoe sole structure and a shoe. Background Technology
[0002] Existing shoe soles can include all the materials that make up the bottom, such as the outsole, midsole, and heel. The main functions of the sole include anti-slip, wear resistance, shock absorption, and cushioning of ground impact, directly affecting wearing comfort, lifespan, and safety. Current shoe sole technology generally involves directly fixing the outsole, midsole, and other multi-layered structures with glue. However, when the force distribution on the foot changes, the forces on the multi-layered sole structure differ. For example, when a user stands on a slope, the different forces between the different layers, coupled with high outdoor temperatures or heat generated by massaging the sole, weaken the adhesive strength, making it easy for the layers to separate and leading to cracks in the sole structure. Utility Model Content
[0003] The purpose of this invention is to propose a composite sole structure that integrates a bottom pad, a middle pad, and a fixing pad into one unit. The lower locking block of the bottom pad and the upper locking block of the fixing pad are simultaneously positioned in the middle hole of the middle pad, which can improve the tightness of the connection between the three components.
[0004] This utility model also proposes a shoe that uses the above-mentioned composite sole structure.
[0005] To achieve this objective, the present invention adopts the following technical solution: A composite sole structure includes: a bottom pad, a middle pad, and a retaining pad; The bottom pad, the middle pad, and the fixing pad are connected as one unit; The upper surface of the bottom pad is provided with a receiving groove; the bottom wall of the receiving groove is provided with a plurality of lower locking blocks along the length direction; the intermediate pad is disposed on the bottom wall of the receiving groove, and the intermediate pad is provided with a plurality of intermediate holes along the length direction; the fixing pad is disposed in the receiving groove and on the upper surface of the intermediate pad; the lower surface of the fixing pad is provided with a plurality of upper locking blocks along the length direction; the lower locking blocks are limited to the intermediate holes, and the upper locking blocks are limited to the intermediate holes.
[0006] Optimally, the outer side of the upper locking block engages with the middle hole; the interior of the upper locking block is provided with a locking slot opening downwards; the lower locking block extends upwards and is confined within the locking slot.
[0007] Alternatively, the lower locking block may have a positioning block on its side; the inner wall of the locking block groove may have a positioning inner groove located above the opening of the locking block groove; the positioning block may be positioned within the positioning inner groove to restrict the lower locking block from moving within the locking block groove.
[0008] Ideally, the upper and lower locking blocks are made of rubber.
[0009] Alternatively, adhesive can be provided between the card slot and the lower card block.
[0010] Alternatively, the upper surface of the fixing pad may be provided with a drip hole, which exposes a portion of the card slot and is used to inject adhesive into the card slot.
[0011] Optimally, the bottom pad, intermediate pad, and fixing pad are made of rubber.
[0012] Optimally, the base pad has a plurality of recesses along its length; the recesses extend horizontally from the lower surface of the base pad to the outer side wall of the base pad.
[0013] Alternatively, two adjacent recesses can be spaced apart to form a void area, with the central hole located above the void area.
[0014] A shoe having the aforementioned composite sole structure.
[0015] Compared with the prior art, one of the above technical solutions has the following beneficial effects: This solution provides a composite sole structure that integrates a bottom pad, a middle pad, and a fixing pad into one unit. The lower locking block of the bottom pad and the upper locking block of the fixing pad are simultaneously positioned within the middle hole of the middle pad, which can improve the tightness of the connection between the three components. This not only improves the stability of the composite sole structure but also prevents the pads from sliding against each other and causing the composite sole structure to separate. This solves the problem of cracking between pads in existing sole structures when the stress directions are different. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of one embodiment of a composite sole structure; Figure 2 This is an exploded structural diagram of one embodiment of the composite sole structure; Figure 3 This is a cross-sectional structural diagram of one embodiment of the composite sole structure; Figure 4 yes Figure 3 Enlarged view of part A in the middle.
[0017] in: Bottom pad 1, middle pad 2, fixing pad 3; receiving groove 11; lower locking block 12; positioning block 13; inner recess 14; empty area 15; middle hole 21; upper locking block 31; locking block groove 32; positioning inner groove 33; drip hole 34. Detailed Implementation
[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "inner side," "outer side," "inner end," "outer end," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis. In the description of this utility model, unless otherwise stated, "multiple" means two or more.
[0020] like Figure 1-4 A composite sole structure includes: a bottom pad 1, a middle pad 2, and a fixing pad 3; The bottom pad 1, the middle pad 2, and the fixing pad 3 are connected as one unit; The upper surface of the bottom pad 1 is provided with a receiving groove 11; the bottom wall of the receiving groove 11 is provided with a plurality of lower locking blocks 12 along the length direction; the intermediate pad 2 is disposed on the bottom wall of the receiving groove 11, and the intermediate pad 2 is provided with a plurality of intermediate holes 21 along the length direction; the fixing pad 3 is disposed in the receiving groove 11 and on the upper surface of the intermediate pad 2; the lower surface of the fixing pad 3 is provided with a plurality of upper locking blocks 31 along the length direction; the lower locking blocks 12 are limited to the intermediate holes 21, and the upper locking blocks 31 are limited to the intermediate holes 21.
[0021] This solution provides a composite sole structure that integrates a bottom pad 1, a middle pad 2, and a fixing pad 3 into one unit. The lower locking block 12 of the bottom pad 1 and the upper locking block 31 of the fixing pad 3 are simultaneously positioned within the middle hole 21 of the middle pad 2, which can improve the tightness of the connection between the three components. This not only improves the stability of the composite sole structure but also prevents the pads from sliding against each other and causing the composite sole structure to separate. This solves the problem of cracking between pads in existing sole structures when the stress directions are different.
[0022] Specifically, the bottom pad 1 is the main part in contact with the ground, and its lower surface may have a certain texture to provide anti-slip properties when in contact with the ground; the upper surface of the bottom pad 1 has a receiving groove 11; the middle pad 2 and the fixing pad 3 are arranged sequentially in the receiving groove 11 from low to high; the bottom pad 1, the middle pad 2 and the fixing pad 3 are connected as one unit, and the three can be connected by known methods, such as conventional glue fixation, sewing fixation or heat fusion fixation; the receiving groove 11 has multiple lower locking blocks 12 along its length; the middle pad 2 has multiple vertically connected intermediate holes 21 along its length; the lower surface of the fixing pad 3 has multiple upper locking blocks 31 along its length; the upper locking blocks 31 and the lower locking blocks 12 are directly engaged with the intermediate holes 21, so that both the bottom pad 1 and the fixing pad 3 are restricted by the middle pad 2; the fixing pad 3 is the position where the user's foot directly or indirectly contacts the ground; when the composite sole structure is on a slope, the fixing pad... The fixed pad 3 and the base pad 1 are subjected to forces in different directions. For example, the foot applies a downward force to the fixed pad 3, while the base pad 1, in order to remain stationary on the slope, is subjected to an upward force from the ground. Conventionally, when the base pad 1 rubs against the ground or when the outdoor surface temperature is high, the adhesive of the base pad 1 is heated, which may reduce the tightness of the connection between the base pad 1, the intermediate pad 2, and the fixed pad 3. In this solution, the base pad 1 and the fixed pad 3 are simultaneously confined to the intermediate hole 21 of the intermediate pad 2. The intermediate hole 21 is distributed along the length of the intermediate pad 2, and multiple intermediate holes 21 are confined by upper locking blocks 31 and lower locking blocks 12 at different positions. This strengthens the fixing stability of the intermediate pad 2 on both the fixed pad 3 and the base pad 1, and can prevent the relative displacement of the fixed pad 3 and the base pad 1 from causing cracking and deformation of the sole structure. This solves the problem of cracking between pads in the existing sole structure when the force directions are different.
[0023] Alternatively, the outer side of the upper locking block 31 is engaged with the middle hole 21; the interior of the upper locking block 31 is provided with a downward-opening locking slot 32; the lower locking block 12 extends upward and is confined within the locking slot 32.
[0024] The upper locking block 31 engages downwards with the middle hole 21, and the inner wall of the middle hole 21 abuts against the outer wall of the upper locking block 31, thus limiting the outer side of the upper locking block 31. The lower locking block 12 passes upwards through the middle hole 21 and extends into the locking slot 32 of the upper locking block 31, and the inner wall of the locking slot 32 abuts against the outer wall of the lower locking block 12, thus limiting the lower locking block 12. In this way, the upper locking block 31 and the lower locking block 12 are limited at multiple angles, thereby preventing the pads from sliding against each other and causing the composite sole structure to separate.
[0025] Alternatively, the lower locking block 12 may have a positioning block 13 on its side; the inner wall of the locking block groove 32 may have a positioning inner groove 33, which is located above the opening of the locking block groove 32; the positioning block 13 may be positioned within the positioning inner groove 33 to restrict the lower locking block 12 from moving within the locking block groove 32.
[0026] The lower locking block 12 is provided with a positioning block 13, which is located on the side of the lower locking block 12; the inner wall of the locking block groove 32 is provided with a positioning inner groove 33, and the opening of the positioning inner groove 33 is horizontally exposed on the inner wall of the locking block groove 32; when the lower locking block 12 extends into the locking block groove 32, the lower locking block 12 will engage the positioning block 13 with the positioning inner groove 33 at the end of its movement. The positioning inner groove 33 has a limiting effect on the positioning block 13, thereby restricting the movement of the positioning block 13 in the locking block groove 32, and thus preventing the positioning block 13 from vertically disengaging from the opening of the locking block groove 32.
[0027] Ideally, the upper locking block 31 and the lower locking block 12 are made of rubber.
[0028] The upper locking block 31 and the lower locking block 12 are made of rubber, which has a certain elasticity and deformation capability. When the lower locking block 12 needs to be engaged with the locking block groove 32, it can deform the positioning block 13 so that the lower locking block 12 and its positioning block 13 can extend into the locking block groove 32 together. The locking block groove 32 of the upper locking block 31 can also be deformed. After the lower locking block 12 moves into the locking block groove 32, the positioning block 13 engages with the positioning inner groove 33 at the moving end, thereby connecting the upper locking block 31 and the lower locking block 12 into one unit.
[0029] Alternatively, adhesive can be provided between the card slot 32 and the lower card block 12.
[0030] After assembly, the upper locking block 31 and the lower locking block 12, in addition to being limited by their own structures, are further connected by adhesive to improve the tightness of the connection. Before assembling the upper locking block 31 and the lower locking block 12 into one piece, a layer of adhesive can be pre-applied to the inner wall of the locking block groove 32 or the outer wall of the lower locking block 12. After the adhesive cures, it can enhance the fixing stability between the two.
[0031] Alternatively, the upper surface of the fixing pad 3 is provided with a drip hole 34, which exposes a partial area of the locking slot 32. The drip hole 34 is used to input adhesive into the locking slot 32.
[0032] The drip hole 34 can expose a local area of the locking block groove 32. The drip hole 34 is preferably a small hole structure, such as the size of a pinhole. The drip hole 34 can be integrally formed on the fixing pad 3, or it can be formed by directly passing the needle of the syringe through the upper surface of the fixing pad 3 later. After the adhesive is placed in the locking block groove 32, it will flow into the locking block groove 32 and thus be distributed between the lower locking block 12 and the locking block groove 32. After the adhesive cures, the connection between the upper locking block 31 and the lower locking block 12 can be further improved.
[0033] Optimally, the bottom pad 1, the middle pad 2, and the fixing pad 3 are made of rubber.
[0034] The composite outsole structure made of rubber provides a stable support structure, protecting the feet from ground impact and injury; the elastic properties of the rubber composite outsole structure can effectively absorb the impact force during walking or sports, reducing damage to the joints; the tread pattern design on the rubber provides excellent grip, especially on wet and slippery surfaces.
[0035] Optimally, the base pad 1 is provided with a plurality of recesses 14 along its length; the recesses 14 extend horizontally from the lower surface of the base pad 1 to the outer side wall of the base pad 1.
[0036] Since the sole pad 1 is made of rubber, the sole pad 1 can be bent; the bending position is mainly concentrated in the concave part 14, which is recessed in the lower surface of the sole pad 1 and extends from the lower surface of the sole pad 1 to the outer wall surface; different concave parts 14 are separated, and the concave part 14 can accommodate the front and rear areas to a certain extent to bend, thereby avoiding the problem of the sole being too hard.
[0037] Alternatively, a gap area 15 can be formed between two adjacent recesses 14, and the intermediate hole 21 is located above the gap area 15.
[0038] The upper locking block 31, the middle hole 21, and the lower locking block 12 are located above the open area 15. The bending mainly occurs in the concave part 14 and will not affect the open area 15. Therefore, the local bending of the composite sole structure will not interfere with the position of the three components.
[0039] A shoe having the aforementioned composite sole structure.
[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A composite sole structure, characterized in that, include: Base pad, middle pad, and fixing pad; The bottom pad, the middle pad, and the fixing pad are connected as one unit; The upper surface of the bottom pad is provided with a receiving groove; the bottom wall of the receiving groove is provided with a plurality of lower locking blocks along the length direction; the intermediate pad is disposed on the bottom wall of the receiving groove, and the intermediate pad is provided with a plurality of intermediate holes along the length direction; the fixing pad is disposed in the receiving groove and on the upper surface of the intermediate pad; the lower surface of the fixing pad is provided with a plurality of upper locking blocks along the length direction; the lower locking blocks are limited to the intermediate holes, and the upper locking blocks are limited to the intermediate holes.
2. The composite sole structure according to claim 1, characterized in that, The outer side of the upper locking block engages with the middle hole; the interior of the upper locking block is provided with a locking slot that opens downwards; the lower locking block extends upwards and is confined within the locking slot.
3. The composite sole structure according to claim 2, characterized in that, The lower locking block has a positioning block on its side; the inner wall of the locking block groove has a positioning inner groove, which is located above the opening of the locking block groove; the positioning block is limited to the positioning inner groove to restrict the lower locking block from moving in the locking block groove.
4. The composite sole structure according to claim 3, characterized in that, The upper and lower locking blocks are made of rubber.
5. A composite sole structure according to claim 2, characterized in that, An adhesive is provided between the card slot and the lower card block.
6. The composite sole structure according to claim 5, characterized in that, The upper surface of the fixing pad is provided with a drip hole, which exposes a partial area of the locking block groove. The drip hole is used to input adhesive into the locking block groove.
7. A composite sole structure according to any one of claims 1-6, characterized in that, The bottom pad, middle pad, and fixing pad are made of rubber.
8. A composite sole structure according to claim 7, characterized in that, The base pad has multiple recesses along its length; the recesses extend horizontally from the lower surface of the base pad to the outer side wall of the base pad.
9. A composite sole structure according to claim 8, characterized in that, An empty area is formed between two adjacent recesses, and the central hole is located above the empty area.
10. A shoe, characterized in that, A composite sole structure as described in any one of claims 1-9 is provided.