Double-hardness rubber-coated heel lift for heel

Abstract

The utility model provides a double-hardness rubber-coated heel lift for a heel, which comprises an inner hard support body and an outer soft elastic body, a plurality of connecting columns used for being assembled with the heel are arranged on the surface of the assembling end of the hard support body, and a plurality of through holes are formed in the surface, at least partially contacted with the soft elastic body, of the hard support body. The diameter of the through hole in the surface of the end, provided with the connecting column, of the hard supporting body is larger than that of the through hole in the surface of the other end of the hard supporting body, the through hole is a stepped hole, protrusions staggered with the through hole are arranged on the bottom face of the hard supporting body, a double-layer sawtooth-shaped surrounding edge is arranged on the outer edge of the hard supporting body, and sawteeth on the upper layer and sawteeth on the lower layer are arranged in a staggered mode. The soft elastic body wraps the bottom face and the side wall of the hard supporting body and is inserted and meshed into an integrated structure, the heel lift structure is high in stability, the fusion degree of the hard supporting body and the soft elastic body is high, and the delaminating phenomenon is not prone to occurring.

Description

Technical Field

[0001] The utility model relates to the field of shoe accessories, in particular to a double-hardness rubber-coated upper leather for heels. Background Art

[0002] The heel, as one of the primary stress points during walking, is the fastest-wearing part of the shoe's sole and plays a crucial role in comfort. Therefore, existing plastic heels, especially those of women's shoes, utilize an auxiliary accessory, commonly known as a top lift or top piece, attached to the heel body to contact the ground.

[0003] Currently, the upper leather of heels is mainly made of high-hardness rubber or other high-hardness elastomer materials, which cannot meet the characteristics of anti-slip, quietness, high wear resistance, etc., and cannot meet the increasingly high standards of the current consumer market;

[0004] In addition, the existing double-hardness rubber-coated upper leather, such as publication number: CN119423451B, still has the risk of falling off on small heels. By optimizing the upper leather structure design, the bonding strength between the hard support body and the soft elastomer is enhanced, effectively reducing the risk of falling off. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a double-hardness rubber-coated upper leather for the heel.

[0006] To achieve the above-mentioned object, the technical solution adopted by the present invention is: a double-hardness rubber-coated upper leather for shoe heels, characterized in that it includes an inner hard support body and an outer soft elastic body, and the surface of the assembly end of the hard support body has a plurality of connecting columns for assembly with the heel;

[0007] The surface of the hard support body that at least partially contacts the soft elastic body has a plurality of through holes, wherein the through holes are located on one end surface of the hard support body provided with the connecting column, and the through holes have a larger aperture than the through holes on the other end surface, and the through holes are stepped holes;

[0008] The bottom surface of the rigid support body is provided with a protrusion or a groove which is misaligned with the through hole;

[0009] The outer edge of the rigid support body is provided with a double-layer serrated edge, with the upper and lower layers of serrations arranged in a staggered manner;

[0010] The soft elastic body covers the bottom surface and side periphery of the hard support body and intersperses and bites into an integrated structure;

[0011] Beneficial effects of the present invention: The present invention provides a double-hardness rubber-coated leather piece for heels, which enhances the bonding strength between the hard support body and the soft elastic body by optimizing the structural design of the hard support body, thereby effectively reducing the risk of falling off.

[0012] The utility model also has the characteristics of simple structure, convenient processing and easy assembly, and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the hard support structure of the utility model Figure 1 ;

[0016] Figure 3 This is a schematic diagram of the rigid support structure of the utility model Figure 2 ;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the present utility model. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the embodiments do not limit the present invention in any form.

[0019] like Figure 1-4 As shown:

[0020] A double-hardness rubber-coated upper leather for heels, characterized in that it includes an inner hard support body 100 and an outer soft elastomer 200, wherein the hard support body 100 and the soft elastomer 200 are made of the same material with different hardnesses, and the assembly end surface of the hard support body 100 has a plurality of connecting columns 110 for assembling with the heel, and the soft elastomer 200 is injection-molded to cover the bottom and side of the hard support body 100 and interspersed and bitten into an integrated structure. 0 and the soft elastomer 200 can effectively ensure that the two are highly integrated during injection molding to avoid delamination. The connecting column 110 is used to connect and fix the top leather and the bottom of the heel. The connecting column 110 and the hard support body 100 are integrally injection molded. The soft elastomer 200 in this embodiment adopts an injection molding method in which the bottom and side surfaces cover the hard support body 100, so that the bottom and side surfaces of the soft elastomer 200 are integrated with the hard support body 100 after injection molding, so that the two have higher tightness after injection molding and are not easy to delaminate.

[0021] The surface of the hard support body 100 that is at least partially in contact with the soft elastomer 200 has several through holes 120. The purpose of setting the through holes 120 in the hard support body 100 is to facilitate the injection material to enter the through holes 120 during the injection molding of the soft elastomer 200. After cooling, the soft elastomer 200 is formed and fused into one with the hard support body 100. By setting the through holes 120, the contact area between the soft elastomer 200 and the hard support body 100 is increased, thereby improving the fusion effect and the firmness after fusion.

[0022] The through hole 120 is located on the surface of one end of the hard support body 100 and is provided with a connecting column 110. The aperture of the through hole 120 is larger than the aperture of the through hole 120 on the other end surface. The through hole 120 is a stepped hole or a tapered hole. In this embodiment, a stepped hole with a larger aperture at the top and a smaller aperture at the bottom is used. The purpose of using a stepped hole or a tapered hole is to further improve the fusion firmness of the soft elastomer 200 and the hard support body 100. Even if grease or other contaminants enter during the injection molding process, resulting in a low degree of fusion between the soft elastomer 200 and the hard support body 100, direct delamination and separation of the soft elastomer 200 and the hard support body 100 will not occur.

[0023] The bottom surface of the hard support body 100 is provided with a protrusion 140 or a groove 141 that is offset from the through hole 120. The provision of the protrusion 140 or the groove 141 increases the contact area between the soft elastic body 200 and the hard support body 100, thereby improving the fusion effect and the firmness after fusion.

[0024] The outer edge of the hard support body 100 is provided with a serrated edge 130. The serrated edge 130 is also provided to increase the contact area between the hard support body 100 and the soft elastomer 200, so that the soft elastomer 200 is more firmly connected and fused with the hard support body 100 during secondary injection molding.

[0025] The outer edge of the hard support body 100 has two layers of serrated edges 130, and the serrations of the upper and lower layers of serrated edges 130 are staggered. The purpose of setting the two layers of serrated edges 130 with staggered serrations is to enable the hard support body 100 and the soft elastic body 200 to bite into each other, thereby further improving the fusion and firmness.

[0026] The hard support body 100 is made of a material with a Shore hardness of 85A (or Shore hardness of 60D) or above. Available materials include rubber-plastic materials or composite modified materials. The preferred materials are CPU, TPU, carbon fiber, PA, PA composite carbon fiber and TPU composite PA. Because the hard support body 100 plays the role of supporting and connecting the heel, its material must have both a certain toughness to resist impact and a hardness to play a supporting role.

[0027] The injection molding temperature of the rigid support body 100 is between 170 degrees Celsius and 280 degrees Celsius. In this embodiment, the injection molding temperature is preferably 215 degrees Celsius.

[0028] The soft elastic body 200 is made of a rubber-plastic elastomer material with a Shore hardness of 78A to 40A, preferably TPU.

[0029] Since the soft elastic body 200 needs to meet the requirements of anti-slip, quietness, wear resistance, etc., it is made of a soft elastic material with low hardness and high wear resistance.

[0030] The injection molding temperature of the soft elastomer 200 is between 150 degrees Celsius and 185 degrees Celsius, and the injection molding temperature in step 2 is preferably 185 degrees Celsius.

[0031] The TPU material in this embodiment is thermoplastic polyurethane elastomer rubber, which is an environmentally friendly new elastomer material.

[0032] The utility model provides a double-hardness rubber-coated upper leather for heels. The upper leather has a strong structural stability, a high degree of fusion between the hard support body and the soft elastomer, and is not prone to delamination. In addition, a special injection molding process and structure are used, so even if grease or other contaminants enter during the injection molding process, the upper leather will not delaminate. The upper leather combines the firmness and ease of use of the hard elastomer with the high anti-slip, shock-resistant, quiet, and high wear-resistant properties of the soft elastomer outer layer and floor layer.

[0033] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0034] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A double-hardness rubber-coated upper leather for heels, characterized in that: It comprises an inner hard support body (100) and an outer soft elastic body (200), wherein the assembly end surface of the hard support body (100) has a plurality of connecting columns (110) for assembly with the heel; The surface of the hard support body (100) that is at least partially in contact with the soft elastic body (200) has a plurality of through holes (120), wherein the through holes (120) located on one end surface of the hard support body (100) provided with the connecting column (110) have a larger aperture than the through holes (120) on the other end surface, and the through holes (120) are stepped holes; A protrusion (140) is provided on the bottom surface of the hard support body (100) and is misaligned with the through hole (120); The outer edge of the rigid support body (100) is provided with a double-layer serrated edge (130), with the upper and lower layers of serrations being arranged in a staggered manner; The soft elastic body (200) covers the bottom surface and side periphery of the hard support body (100) and is interlaced and bitten into an integrated structure.

2. The double-hardness rubber-coated upper leather for heels according to claim 1, characterized in that: A groove (141) offset from the through hole (120) is provided on the bottom surface of the hard support body (100).

3. The double-hardness rubber-coated upper leather for heels according to claim 1, characterized in that: The hard support body (100) and the soft elastic body (200) are made of the same material.

4. The double-hardness rubber-coated upper leather for heels according to claim 1, characterized in that: The protrusion (140) on the bottom surface of the hard support body (100) is a cylindrical protrusion.

5. The double-hardness rubber-coated upper leather for heels according to claim 2, characterized in that: The groove (141) on the bottom surface of the hard support body (100) is a rectangular parallelepiped groove.

6. The double-hardness rubber-coated upper leather for heels according to any one of claims 1 to 5, characterized in that: The hard support body (100) is made of a rubber-plastic material having a Shore hardness of 85A or above or a Shore hardness of 60D or above.

7. The double-hardness rubber-coated upper leather for heels according to any one of claims 1 to 5, characterized in that: The soft elastic body (200) is made of a rubber-plastic material with a Shore hardness of 78A to 40A.

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