CN117297226A - Force line guide piece, midsole and shoe - Google Patents

Abstract

The invention relates to the field of shoe manufacturing, in particular to a sole, in particular to a force line guide for a midsole, a midsole with the guide and a shoe with the midsole. The present invention provides a force line guide for a midsole comprising a rigid body mountable to an upper surface of the midsole, the rigid body having a posterior lateral portion corresponding to a plantar lateral region and an anterior medial portion corresponding to a plantar anterior plantar region. The utility model also provides a midsole, including the midsole body with the plantar profile modeling, midsole body upper surface installs as above the line of force guide, and the stereoplasm body of line of force guide is harder than midsole body. There is also provided a shoe comprising a midsole, the midsole being as described above. The shoe can provide better support for the sole of a user, so that the foot of the user is not easy to shake when the user walks or runs when wearing the shoe, the foot is not easy to sprain, and the foot of the user is not easy to damage.

Description

Force guides, midsoles and shoes

Technical field

The present invention relates to the field of shoe manufacturing, in particular to shoe soles, and specifically to a force line guide for a midsole, a midsole having the guide and a shoe having the midsole.

Background technique

The midsole of existing shoe soles is usually made using a foaming process. During the foaming process, production personnel can add different ratios of regulators/foaming agents to different areas of the midsole as needed to shape the midsole. The hardness of each part is different, and the hardness of all parts inside the same part is basically the same. An existing midsole has a heel buffer at its rear portion, which corresponds to the heel area of the sole of the user's foot; the remaining part of the midsole is a support portion, which is harder than the heel buffer and is located at the center of the midsole. The front and middle parts correspond to the lateral area, arch area and forefoot area of the user's sole. When a user with a normal foot shape walks or runs in shoes, the heel area of the foot usually lands first, and then the lateral area, arch area and forefoot area of the foot land, until the entire sole of the foot lands. During this process, the heel cushioning part of the midsole is soft, which can better cushion the heel area of the foot that lands first, preventing the heel area of the foot from landing hard, making the heel area of the foot less likely to pinch the foot, and making the foot feel It is more comfortable; the support part of the midsole is hard, which can support the outer area, arch area and forefoot area after landing, thereby reducing foot shaking and increasing stability, making it difficult for users to walk or run. Sprained feet. However, shoes supported by the existing midsoles still have foot wobbles, especially when some users with pronated feet wear such shoes (people with pronated feet usually exhibit foot valgus and foot swaying). Flat), there is a high risk of sprained feet, which can easily cause foot injuries to the user and is not safe enough.

Contents of the invention

The technical problem to be solved by the present invention is to provide a line of force guide for the midsole, a midsole with the guide and a shoe with the midsole, which can provide a better fit for the sole of the user's foot. Good support can prevent the user's feet from shaking, spraining the feet, and causing damage to the user's feet when walking or running in the shoes.

The inventor found that for users with normal foot shape, although the process from the heel area of the foot landing first to the complete landing of the entire foot lasts very short, the three areas of the lateral plantar area, arch area and forefoot area The landing time of areas is first and last, and the landing time of various places in the same area is also first and last. The support forces required in areas with different landing times are not exactly the same. Some of the areas that require more support force are the main stress-bearing parts, while other areas require more support force. Some areas that require less support are non-primary (secondary) stress-bearing parts. However, the hardness of the supporting part of the existing midsole is basically the same everywhere, and the supporting force provided to the lateral plantar area, arch area and forefoot area is basically the same. It is easy to cause the lateral plantar area, arch area and In the three areas including the forefoot area and the forefoot area, the main stress-bearing parts that require greater support force do not receive sufficient support, while the non-primary (secondary) stress-bearing parts that require smaller support force receive less support force. It often causes sprained feet. The uneven force in these three areas is the reason why existing shoes have foot wobbles, which brings the risk of sprained feet and causes damage to the user's feet, which is not safe enough. The inventor also found that when a user walks, the heel area of the foot will land first, then the lateral area of the foot will land from back to front, from outside to inside, and then it will be the inner area of the forefoot area of the foot to land (front). The outer area of the plantar area lands together with the inner area of the forefoot area, but the inner area of the forefoot area is the main force-bearing part), while the arch area almost does not land at all, that is, it lands on the heel area of the foot. Finally, the main force-bearing parts of the remaining areas of the foot are from the lateral area to the medial area of the forefoot area, and the main force-bearing parts together form the plantar force line. For users with pronated feet, the collapse of the arch of the foot causes a (slight) deviation of the plantar force line. This pronated foot shape is supported by the existing midsole with basically the same hardness everywhere. At the same time, there is also uneven force on the plantar force line, causing the foot to shake and damage the foot.

Based on the above findings, the present invention provides a force line guide for a midsole, which includes a hard body that can be installed on the upper surface of the midsole. The hard body has a posterior lateral portion corresponding to the lateral area of the sole and a front portion corresponding to the front of the sole. The anteromedial part of the medial area of the plantar region.

Wherein, the anteromedial portion of the hard body has a first metatarso-toe portion corresponding to the user's first metatarso-toe region located in the medial area of the fore metatarsal region of the sole of the foot.

Wherein, the first metatarsophalangeal part is wedge-shaped, and the inner part of the first metatarsophalangeal part is thicker than the outer part.

Wherein, the first metatarsal toe portion is partially hollowed out.

Wherein, the thickness of the hard body is 2-5 mm, and/or the hardness of the hard body is 80-85HA.

Wherein, the hard body is in the shape of a flat plate or an upwardly arched arc.

The present invention also provides a midsole, which includes a midsole body that is shaped like the sole of the foot. The force line guide as described above is installed on the upper surface of the midsole body. The hard body of the force line guide is harder than the midsole body.

Wherein, the projection of the rear outer part of the force line guide to the upper surface of the midsole body is located in the area of the outer part of the middle part of the midsole body, and the projection of the front inner part of the force line guide to the upper surface of the midsole body It is located in the area on the inner side of the front part of the midsole body.

Wherein, a recess is formed on the upper surface of the midsole body, and the force line guide is accommodated in the recess, and its edge smoothly transitions to the upper surface of the midsole body.

The present invention also provides a shoe, including a midsole, the midsole being as described above.

Beneficial effects: The hard body of the force line guide corresponds to the inner area from the lateral area of the user's foot to the forefoot area. After the force line guide is installed on the upper surface of the midsole, its hard body corresponds to the lateral area of the foot. , the main force-bearing part of the forefoot area, that is, corresponding to the plantar force line, then after the heel area lands, the hard body can be sequentially from the lateral area of the sole to the inner area of the forefoot area. The main stress-bearing parts provide sufficient support, while the softer midsole body provides a small amount of support and cushioning for non-main stress-bearing parts such as the arch area of the foot and the lateral areas of the forefoot area. The force-bearing parts in the three areas of the lateral plantar area, arch area and forefoot area are evenly stressed compared to the prior art, which makes it less likely to cause the foot to shake, sprain the foot, and cause damage to the user's foot. causing damage to the body. For users with pronated feet, although their plantar force line is (slightly) deviated from the normal foot shape due to arch collapse, the force line guide can still cope with this deviation of the plantar force line. In most areas, it can also provide sufficient support for the offset plantar force line. Moreover, since the hard body of the force line guide is harder than the midsole body, the deformation amount of the hard body when pressed is smaller than that of the midsole body. Therefore, the hard body can bulge relative to the midsole body during the process of being pressed and lift up. Since the hard body corresponds to the plantar force line of a user with a pronated foot, the hard body can guide the deviated plantar force line when lifting the foot of a user with a pronated foot. The plantar force line of the foot is guided in the direction of the plantar force line of the normal foot shape, playing a certain orthopedic effect.

Description of drawings

Figure 1 is a schematic structural diagram of the midsole.

Figure 2 is a schematic diagram of the structure of the human foot.

Figure 3 is a schematic diagram of the structure of the midsole corresponding to the sole of a human foot.

FIG. 4 is a schematic cross-sectional view along the direction A-A in FIG. 1 .

FIG. 5 is a schematic cross-sectional view along the B-B direction in FIG. 1 .

Figure 6 is a schematic top view of the force line guide.

Figure 7 is a schematic structural diagram of the force line guide from a bottom view.

Symbol Description:

1-midsole; 11-midsole body; 111-dimple; 2-force guide; 21-hard body; 211-posterior lateral part; 212-anteromedial part; 213-middle part; 22-first metatarsal Toe; 221-the medial part of the first metatarsal toe; 222-the lateral part of the first metatarsal toe; 223-hollow; 3-sole; 31-lateral area; 32-foreplantar area; 321-first metatarsal Toe area; 33-heel area; 34-arch area.

Detailed ways

The invention will be further described in detail below in conjunction with specific embodiments.

The shoe sole includes an outsole, an orthopedic midsole and an insole arranged from the outside to the inside. The structures and principles of the outsole and the insole are conventional technologies and will not be described in detail here. As shown in Figure 1, the midsole 1 has a midsole 1 body 11 that is shaped like the sole of a human foot 3 (see Figure 2), and is made using a foaming process; the midsole 1 body 11 is tested using a C-type Shore hardness tester. Hardness measurement shows that the hardness of the body 11 of the midsole 1 is 50-53HC.

The upper surface of the body 11 of the midsole 1 is provided with dimples 111 (see Figure 4). The force line guide 2 has a hard body 21. The hard body 21 is installed above the midsole 1 body 11 and is accommodated in the pit 111. See Figure 4. The edge of the hard body 21 is in contact with the midsole 1 body 11. The upper surface has a smooth transition, and there is no obvious step between the edge and the upper surface. The force line guide 2 is a plastic part. The hard body 21 of the force line guide 2 has a thickness of 2 to 5 mm and is harder than the body 11 of the midsole 1. Use a type A Shore hardness tester to measure the hardness of the hard body 21. The measured hardness of the hard body 21 is 80 to 85 HA (degrees). See Figures 6 and 7. The hard body 21 has a rear lateral portion 211 and a front medial portion 212. The rear lateral portion 211 and the front medial portion 212 are connected by an arc-shaped middle portion 213. See Figure 3. The rear lateral portion 211 extends toward the midsole. The projection of the upper surface of the body 11 is located in the outer area of the middle part of the body 11 of the midsole 1, corresponding to the outer area 31 of the user's sole 3 (see Figure 2); the projection of the front inner part 212 to the upper surface of the body 11 of the midsole 1 is The area located on the inner side of the front body 11 of the midsole 1 corresponds to the inner area of the forefoot area 32 of the user's sole 3 . The front medial portion 212 of the hard body 21 is integrally formed with a first metatarsal toe portion 22 extending forward. The first metatarsal toe portion 22 has the same material and hardness as the hard body 21 and corresponds to the front of the user's foot 3 The first metatarsophalangeal area 321 in the medial area of the plantar area 32. In other embodiments, the first metatarsophalangeal portion 22 and the hard body 21 can be changed into separate types. In this embodiment, the hard body 21 of the force line guide 2 is in the shape of a flat plate; in other embodiments, the hard body 21 can be changed into a slightly upwardly arched arc shape.

When a user with a normal foot shape walks or runs in the shoe, the heel of the sole 3 of the foot first lands on the ground and steps on the rear of the midsole 1 body 11, and the rear of the midsole 1 body 11 deforms and sinks under pressure, acting as a buffer. , to prevent the user's sole 3 heel area 33 from landing hard, making the user's feet more comfortable; after the sole 3 heel area 33 lands, it is the turn of the sole 3 lateral area 31 and the forefoot area 32 to land in sequence. During this process The arch area 34 of the foot almost does not touch the ground at all. The lateral area 31 of the sole 3 and the inner area of the forefoot area 32 of the sole 3, especially the area corresponding to the first metatarsal toe area 321, are the main stress-bearing parts. These main stress-bearing parts are common. The force lines of the sole 3 are formed, and the force line guides 2 corresponding to these parts are harder than the midsole 1 body 11 and can guide the outer surface of the sole 3 during the landing of the outer area 31 and the forefoot area 32 in sequence. The main stress-bearing parts of the area 31 and the forefoot area 32 provide better support, making it less likely for the user to sprain their feet, and less likely to cause damage to the user's feet, which is safer. Although the outer area of the forefoot area 32 of the sole 3 lands with the inner area, the force is weak and is not the main force-bearing part; because the outer area of the front part of the midsole 1 body 11 corresponds to the forefoot area 32 of the sole 3 The outer area of the foot 3 is softer in hardness than the force line guide 2, so it can provide a small amount of support for the outer area of the forefoot area 32 of the sole 3 as a non-main stress-bearing part, and will not be affected by the force line guide 2. Being so hard and painful not only makes the non-main force-bearing parts of the sole 3 of the user feel more comfortable, but also further avoids sprained feet, reduces injuries, and is safer. In addition, when the force line guide 2 provides better support for the main force-bearing parts of the sole 3 lateral area 31 and the forefoot area 32, it will also move the parts at the main force-bearing parts. The pressure is guided to the first metatarsal toe area 321 in the inner area of the forefoot metatarsal area 32 of the foot 3. The first metatarsal toe portion 22 of the force line guide 2 corresponding to the first metatarsal toe area 321 is wedge-shaped, see Figure 5, the first metatarsal toe area The inner part 221 of the toe part 22 is thicker than the outer part 222, so the first metatarsophalangeal area 321 of the user's sole 3, which is the main force-bearing part, steps on the wedge-shaped surface of the first metatarsophalangeal part 22 of the force line guide 2 When part of the force is removed, it is not easy to hit the ground hard and the feet are not easily pinched; the first metatarsal toe portion 22 has a certain hardness. On this basis, the first metatarsal toe portion 22 is partially hollowed out 223, so it can be used when the pressure is too large. The sinking deformation further prevents the user's first metatarsal toe area 321 from landing hard, making the user's sole 3 more comfortable when landing. Preferably, the force line guide 2 may not be provided with the first metatarsal toe portion 22, and the hard body 21 alone is enough to provide better support for the main stress-bearing parts of the user's sole 3, but there will be insufficient The first metatarsal toe area 321 of the sole 3 is insufficient due to hard contact with the ground.

For users with pronated feet, although their plantar 3 force lines are (slightly) deviated from the normal foot shape due to the collapse of the arch, the force line guide 2 can still cope with this deviation. It can also provide sufficient support to the main stress-bearing parts of the shifted plantar force line. Moreover, since the hard body 21 of the force line guide 2 is harder than the body 11 of the midsole 1, the deformation amount of the hard body 21 when pressed is smaller than that of the body 11 of the midsole 1, so the hard body 21 can relatively move during the process of being pressed. The body 11 of the midsole 1 is convex upward to lift up the sole 3 of a user with a pronated foot. Since the hard body 21 corresponds to the force line of the sole 3 of a normal foot shape, it lifts up the sole 3 of a user with a pronated foot. It can guide the deviated plantar 3 force lines and guide the deviated plantar 3 force lines in the direction of the normal foot shape, thus playing a certain orthopedic role.

In this embodiment, the hard body 21 of the force line guide 2 is accommodated in the recess 111 on the upper surface of the body 11 of the midsole 1 for installation. In other embodiments, the midsole 1 body 11 may not be provided with the dimples 111 , and instead, the hard body 21 of the force line guide 2 may be directly fixed to the upper surface of the midsole 1 body 11 by bonding for installation.

The above descriptions are only embodiments of the present invention and do not limit the scope of patent protection. Non-substantive changes or substitutions made by those skilled in the art on the basis of the invention will still fall within the scope of patent protection.

Claims (10)

1. A force line guide for a midsole, characterized in that it includes a hard body that can be installed on the upper surface of the midsole. The hard body has a posterolateral portion corresponding to the lateral area of the foot and a portion corresponding to the forefoot area. The anteromedial part of the medial region. 2. The line of force guide as claimed in claim 1, wherein the anteromedial portion of the hard body has a first metatarso-toe area corresponding to the user's first metatarsophalangeal area located in the inner area of the front plantar area of the foot. Metatarsophalangeal part. 3. The line of force guide according to claim 2, wherein the first metatarsal toe portion is wedge-shaped, and the inner portion of the first metatarsal toe portion is thicker than the outer portion. 4. The line of force guide as claimed in claim 2, wherein the first metatarsal toe portion is partially hollowed out. 5. The force line guide according to claim 1, wherein the thickness of the hard body is 2-5 mm, and/or the hardness of the hard body is 80-85HA. 6. The force line guide according to claim 1, wherein the hard body is in the shape of a flat plate or an upwardly arched arc. 7. The midsole includes a midsole body that is shaped like the sole of the foot, and is characterized in that the upper surface of the midsole body is equipped with a force line guide as described in any one of claims 1 to 6, and the hard force line guide is The body is harder than the midsole body. 8. The midsole according to claim 7, wherein the projection of the rear outer portion of the force line guide onto the upper surface of the midsole body is located in an area of the outer portion of the middle portion of the midsole body, and the force line The projection of the front inner part of the guide piece onto the upper surface of the midsole body is located in the area of the inner part of the front part of the midsole body. 9. The midsole according to claim 7, wherein the upper surface of the midsole body is provided with a recess, the force line guide is accommodated in the recess, and its edge is smooth with the upper surface of the midsole body. transition. 10. Shoes, including a midsole, characterized in that the midsole is as described in any one of claims 7 to 9.