Boot heel part
The heel part design with V-shaped grooves and bumps addresses the lack of resilience and comfort in conventional heels by enhancing elastic deformation and friction, ensuring easy heel entry and stability.
Patent Information
- Application Number
- JP2025001645U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Priority Date
- 2025-01-24
- Filing Date
- 2025-05-23
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2035-05-23
AI Technical Summary
Conventional shoe heels lack resilience and comfort at the transition part, making it difficult for individuals with mobility issues to easily slide their heel into the shoe.
A heel part design featuring inward and outward V-shaped concave grooves and bumps on the inner and outer surfaces, respectively, with varying depths and distances that enhance elastic deformation and friction, allowing for improved elastic energy storage and release, and increased friction for stability.
The design provides enhanced resilience, stability, and comfort by increasing the elastic stroke and friction, facilitating easy heel entry and reducing the likelihood of shoe slippage.
Smart Images
Figure 0003252106000001_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field, and particularly relates to the heel part of shoes.
Background Art
[0002] Conventional shoes include a shoe sole and an upper provided on the shoe sole. When wearing the shoes, the heel part of the upper receives the downward pressure of the heel, and when the heel is pushed into the shoe, the heel part deforms. It is necessary to lift the heel part that has deformed so that the heel can smoothly enter the shoe. This is very inconvenient for those who have difficulty bending down. Based on this, the elastic heel part with application number 2022116245747 has made the following improvements. The cross-section of the elastic heel part is generally in the shape of a C-shaped curved surface. The elastic heel part includes an inner surface and an outer surface, and from top to bottom, it includes an entrance part, a transition part, a receiving part, and a bottom part. The edge of the entrance part is a curved surface that slopes from the inner surface towards the outer surface. The transition part is connected to the entrance part and is a curved surface that slopes from the outer surface towards the inner surface direction. The inclination degree of the inner surface of the transition part is greater than the inclination degree of the outer surface of the transition part. The inner surface of the entrance part forms a tread that extends inwards. The receiving part is a curved surface that curves towards the inner surface of the heel part. On the outer surface of the elastic heel part, curves are distributed along the lateral direction of the heel part. Both sides of the elastic heel part further include connecting parts that are strip-shaped structures extending from the entrance part of the heel part towards the shoe sole part. The heel part is integrally formed of an elastic material. The material of the elastic heel part includes any one of rubber foam materials, elastic PU materials, latex foam materials, sponge foam materials, PVC foam, or EVA foam materials. The elastic heel part is integrally press-molded by a mold. When in use, when the foot steps on the tread of the entrance part and is stepped on by the heel, the tread elastically contracts, which is convenient for the foot to slide into the shoe.
[0003] The entrance part, transition part, accommodation part, and bottom part of the above heel part of the shoe are integrally formed by a mold, and since the entrance part, transition part, accommodation part, and bottom part are all made of an elastic material, the elastic deformation amounts of the entrance part, transition part, accommodation part, and bottom part are the same. A curve is provided along the lateral direction of the heel part of the shoe on the outer surface of the transition part, and a plurality of ridges are formed at intervals in the vertical direction on the outer surface. In addition, by providing a protrusion on the inner surface to prevent the shoe from coming off, the hardness at the position of the transition part becomes harder than other parts, so it becomes easier for the foot to enter the shoe. However, such a transition part has an overall block structure, and the difference from the elastic deformation amounts of other parts is small. The transition part is a part that comes into contact with the ankle, and in order to improve the comfort at the ankle, the transition part requires excellent resilience.
[0004] In view of the above circumstances, the present inventor has conducted research and arrived at the present invention.
Summary of the Invention
[0005] The object of the present invention is to provide a heel part of a shoe to solve the problem that the resilience of the transition part of the conventional heel part of the shoe is poor and the comfort of the transition part is not good.
[0006] In order to achieve the above object, the present invention adopts the following technical means. A heel part of a shoe including a heel part main body having an inner surface and an outer surface, The heel part main body sequentially includes an entrance part, a transition part, an accommodation part, and a bottom part that are integrally formed from top to bottom. The entrance part is a curved surface that extends obliquely downward from the outer surface to the inner surface, and the transition part is a curved surface that extends obliquely downward from the inner surface to the outer surface. On the inner surface of the transition part, a plurality of inward concave grooves are formed at intervals in the vertical direction. Between two adjacent inward concave grooves, bumps are formed. At the position corresponding to the inner bumps on the outer surface of the transition part, outward concave grooves are formed. The depth of the outward concave grooves gradually decreases from the central position of the outer wall of the transition part to both ends of the outer wall of the transition part, and finally smoothly transitions to the outer walls of the entrance part and the accommodation part. The inward concave grooves gradually decrease in depth from the central position of the inner wall of the transition part to both ends of the inner wall of the transition part, and finally smoothly transition to the inner walls of the entrance part and the accommodation part, which is the heel part of the shoe.
[0007] The outward concave grooves are outward V-shaped grooves that gradually expand from the inside to the outside. The inward concave grooves are inward V-shaped grooves that taper from the inside to the outside. The inner bumps are V-shaped blocks that gradually expand from the inside to the outside.
[0008] There are four inward concave grooves and three outward concave grooves.
[0009] Between two adjacent outward concave grooves, outward protruding outer bumps are provided. The distance in the vertical direction between two adjacent outer bumps gradually decreases from the central position of the transition part to both ends of the transition part, and finally smoothly transitions to the outer walls of the entrance part and the accommodation part. The distance in the vertical direction between two adjacent inner bumps gradually decreases from the central position of the transition part to both ends of the transition part, and finally smoothly transitions to the inner walls of the entrance part and the accommodation part.
[0010] Between the outward concave groove and the adjacent inward concave groove, a groove wall is formed, and the thickness of the groove wall is 0.8 mm - 1.4 mm.
[0011] The heel part body of the shoe is a TR block, a TPU block, a TPE block or a TPEE block.
[0012] On the bottom surface of the bottom part, an accommodation groove for accommodating the human foot tendon is formed.
[0013] Compared with the prior art, the present invention has the following beneficial effects. 1. In the heel part body of the present invention, wavy concave grooves are provided at the transition parts between the inner surface and the outer surface. When the foot steps on the entrance part and applies a downward pressure to the transition part, the total elastic stroke in the vertical direction of the transition part increases. Therefore, the elastic energy of the transition part can be effectively stored and released, the elastic deformation of the transition part is large, and the restoring force is better.
[0014] 2. The wavy concave grooves increase the roughness of the inner surface of the heel part of the shoe, thereby increasing the frictional force between the heel and the heel part of the shoe, making it difficult for the shoe to come off and ensuring the stability when wearing the shoe.
[0015] 3. When the foot steps on the entrance part and applies a downward pressure to the transition part, the two inner side walls facing each other of the outer concave groove and the two inner side walls facing each other of the inner concave groove move relative to each other until they come into contact with each other. In this case, the transition part is in a compressed state, and the inner surface of the transition part is compressed, so that the distance in the vertical direction of the groove opening of the inner concave groove becomes smaller. As a result, the inner side of the transition part is smoother compared to the released state of the transition part. The transition part is provided with an inclination from the inside to the outside downward, and the heel can quickly enter the shoe. After the heel enters the shoe, the transition part becomes the released state. The inner end part of the inner bump between the two inner concave grooves is thin and the contact area with the heel is small. Therefore, the feeling of the heel against the inner bump is weak, and due to the softness of the transition part, the comfort of wearing the shoe is guaranteed.
Brief Description of the Drawings
[0016]
Figure 1
Figure 2
Figure 3
Figure 4
Embodiments for Carrying out the Invention
[0017] In order to further explain the technical means of the present invention, the following will be described in detail with reference to the drawings.
[0018] As shown in FIGS. 1-4, the heel portion of the shoe includes a heel portion body having an inner surface and an outer surface. The heel portion body includes an inlet portion 1, a transition portion 2, a receiving portion 3, and a bottom portion 4 that are integrally formed in order from top to bottom. The inlet portion 1, the transition portion 2, the receiving portion 3, and the bottom portion 4 are all C-shaped structures. The inlet portion 1 is a curved surface that extends obliquely downward from the outer surface to the inner surface, whereby the heel can easily enter from the inlet portion. The transition portion 2 is a curved surface that extends obliquely downward from the inner surface to the outer surface, whereby the transition portion 2 can fit better around the ankle. The heel portion body is an elastic block such as a TR block, a TPU block, a TPE block, or a TPEE block, that is, the inlet portion 1, the transition portion 2, the receiving portion 3, and the bottom portion 4 are made of the same material. The heel portion body made of an elastic material such as a TR material, TPU, TPE material, or TPEE material has higher resilience and better comfort.
[0019] On the inner surface of the transition part 2, a plurality of inner concave grooves 100 are formed at intervals in the vertical direction. The inner concave grooves 100 are inner V-shaped grooves that taper from the inside to the outside. Between two adjacent inner concave grooves 100, an inner bump 21 protruding inward is formed, that is, the inner bump 21 is a V-shaped block that gradually expands from the inside to the outside. An outer concave groove 200 is provided at a position corresponding to the inner bump 21 on the outer surface of the transition part 2. The outer concave groove 200 is an outer V-shaped groove that gradually expands from the inside to the outside. The depth of the outer concave groove 200 gradually decreases from the central position of the outer wall of the transition part 2 to both ends of the outer wall of the transition part 2, and finally smoothly transitions to the outer walls of the inlet part and the accommodating part. The depth of the inner concave groove 100 gradually decreases from the central position of the inner wall of the transition part 2 to both ends of the inner wall of the transition part 2, and finally smoothly transitions to the inner walls of the inlet part and the accommodating part. Specifically, four inner concave grooves 100 are formed, three outer concave grooves 200 are formed, an outer bump 22 protruding outward is provided between two adjacent outer concave grooves 200, there are two corresponding outer bumps 22, three corresponding inner bumps 21 are provided, the distance in the vertical direction between the two outer bumps 22 gradually decreases from the central position of the transition part to both ends of the transition part, and finally smoothly transitions to the outer walls of the inlet part and the accommodating part, and the distance in the vertical direction between the two inner bumps 21 gradually decreases from the central position of the transition part to both ends of the transition part, and finally smoothly transitions to the inner walls of the inlet part and the accommodating part. Preferably, a groove wall is formed between the outer concave groove 200 and the adjacent inner concave groove 100, and the thickness of the groove wall is 0.8 mm - 1.4 mm. On the bottom surface of the bottom part 4, a receiving groove 300 for receiving the human foot tendon is formed, whereby the bottom part can fit well with the heel and the stability after wearing is improved.
[0020] Compared with the prior art, the present invention has the following beneficial effects. 1. In the heel part body of the present invention, wavy concave grooves are provided at the transition parts between the inner surface and the outer surface. When the foot steps on the entrance part and applies a downward pressure to the transition part, the total elastic stroke in the vertical direction of the transition part increases. As a result, the elastic energy of the transition part can be effectively stored and released, the elastic deformation of the transition part is large, and the restoring force is better.
[0021] 2. The wavy concave grooves increase the roughness of the inner surface of the heel part of the shoe, which increases the frictional force between the heel and the heel part of the shoe, making it difficult to take off the shoe and ensuring the stability when wearing the shoe.
[0022] 3. When the foot steps on the entrance part 1 and applies a downward pressure to the transition part 2, the two inner side walls of the outer concave groove and the two inner side walls of the inner concave groove move relative to each other until they come into contact with each other. In this case, the transition part is in a compressed state, and the inner surface of the transition part is compressed, so that the distance in the vertical direction of the groove opening of the inner concave groove becomes smaller. As a result, the inner side of the transition part is smoother compared to the released state of the transition part. The transition part is provided with an inclination from the inside to the outside downward, and the heel can quickly enter the shoe. After the heel enters the shoe, the transition part becomes the released state. The inner end of the inner bump between the two inner concave grooves is thin and the contact area with the heel is small, so the feeling of the heel against the inner bump is weak, and due to the softness of the transition part, the comfort of wearing the shoe is guaranteed.
[0023] 4. Both ends of the inner bump 21 finally smoothly transition to the inner side wall of the entrance part 1 and the inner side wall of the accommodating part 3, and both ends of the outer bump 22 finally smoothly transition to the outer side wall of the entrance part and the outer side wall of the accommodating part. As a result, it can be smoothly connected to other parts of the shoe, and the traces caused by the joint are reduced.
[0024] The form of the product of the present invention is not limited to the drawings and embodiments of the present invention. Any appropriate changes or modifications made based on the content of the present invention should be included within the protection scope of the present invention.
Claims
1. A heel part of a shoe including a heel part body having an inner surface and an outer surface, the heel part body sequentially includes an inlet part, a transition part, a housing part, and a bottom part integrally formed from top to bottom. The inlet part is a curved surface obliquely extending downward from the outer surface to the inner surface, and the transition part is a curved surface obliquely extending downward from the inner surface to the outer surface. On the inner side surface of the transition part, a plurality of inner concave grooves are formed at intervals in the vertical direction. Between two adjacent inner concave grooves, a bump is formed. At a position corresponding to the inner bump on the outer side surface of the transition part, an outer concave groove is formed. The depth of the outer concave groove gradually decreases from the central position of the outer side wall of the transition part to both ends of the outer side wall of the transition part, and finally smoothly transitions to the outer side walls of the inlet part and the housing part. The depth of the inner concave groove gradually decreases from the central position of the inner side wall of the transition part to both ends of the inner side wall of the transition part, and finally smoothly transitions to the inner side walls of the inlet part and the housing part. The heel part is characterized by this.
2. The outer concave groove is an outer V-shaped groove gradually expanding from inside to outside, the inner concave groove is an inner V-shaped groove tapering from inside to outside, and the inner bump is a V-shaped block gradually expanding from inside to outside. The heel part according to claim 1 is characterized by this.
3. The heel part according to claim 1 is characterized by having 4 inner concave grooves and 3 outer concave grooves.
4. Between two adjacent outer concave grooves, an outer bump protruding outward is provided. The distance between two adjacent outer bumps gradually decreases from the central position of the transition part to both ends of the transition part, and finally smoothly transitions to the outer side walls of the inlet part and the housing part. The distance between two adjacent inner bumps gradually decreases from the central position of the transition part to both ends of the transition part, and finally smoothly transitions to the inner side walls of the inlet part and the housing part. The heel part according to claim 1 is characterized by this.
5. Between the outer concave groove and the adjacent inner concave groove, a groove wall is formed, and the thickness of the groove wall is 0.8 mm - 1.4 mm. The heel part according to claim 1 is characterized by this.
6. The heel part body is a TR block, a TPU block, a TPE block, or a TPEE block. The heel part according to claim 1 is characterized by this.
7. On the bottom surface of the bottom part, a housing groove for accommodating human foot muscles is formed. The heel part according to claim 1 is characterized by this.