Front sole wide-toe shoe tree

Abstract

The utility model relates to a shoe production tool, in particular to a half sole wide-toe shoe tree which comprises a shoe tree body, the shoe tree body comprises a toe area and a heel area, and the width of the heel area is gradually increased from back to front. The outer contour line of the projection of the toe area on the horizontal plane comprises a first arc segment, a second arc segment, a third arc segment and a fourth arc segment, the radian of the third arc segment is larger than that of the first arc segment, the radian of the first arc segment is larger than that of the second arc segment, and the radian of the fourth arc segment is larger than that of the third arc segment. The radian of the second arc section is larger than that of the fourth arc section. By means of the shoe tree, it can be guaranteed that the widest size of an inner cavity of a shoe is located at the toe root position of the half sole, it is guaranteed that the toes have enough activity space, and meanwhile the toe area is limited by the outer contour line of the projection of the toe area on the horizontal plane. The appearance aesthetic feeling of the shoes can be improved, and the wearing comfort of the shoes after long-time exercise is relatively good.

Description

Technical Field

[0001] The utility model relates to a shoe production tool, in particular to a forefoot wide-toe shoe last. Background Art

[0002] In order to improve the aesthetics of the shoe shape, the head of the traditional shoe last is designed to be pointed without considering ergonomics. When shoes are made with this type of shoe last, the toes are squeezed together during use, affecting the wearing comfort. In severe cases, the toes may even suffer bruises or black spots due to mutual squeezing and friction.

[0003] A Chinese invention patent application with publication number CN102438479A discloses a shoe last for shoemaking, which has a first convex portion and a concave-convex portion. The first convex portion is formed on one side of the top end of the forefoot portion of the shoe last and is curved and protrudes forward and upward corresponding to the shape of a human big toe, and the concave-convex portion is curved forward corresponding to the convex shapes of the second to fifth toes of a human foot. Although this shoe last can prevent the toes from being squeezed together when the shoes are used, the shoes produced using this shoe last may have a concave-convex structure on the outer surface of the upper, affecting the aesthetics. In addition, after long-term exercise (such as the second half of a marathon), a person's toes will swell, and the presence of the above-mentioned concave-convex structure will cause discomfort to the movement of the toes, thereby affecting wearing comfort.

[0004] In view of this, the present inventor conducted an in-depth study on the structure of the shoe last, which resulted in this case. Utility Model Content

[0005] The purpose of the utility model is to provide a forefoot wide-toe shoe last which helps to improve the aesthetic appearance of shoes and has relatively good wearing comfort after long-term exercise.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A forefoot wide-toe shoe last includes a shoe last body, the shoe last body including a toe area and a heel area connected in sequence, the toe area is located at a position corresponding to the five toes of a human foot, the width of the heel area gradually increases from back to front, the outer contour line of the projection of the toe area on the horizontal plane includes a first arc segment, a second arc segment, a third arc segment and a fourth arc segment that are smoothly connected in sequence, the end of the first arc segment connected to the second arc segment is located at a position where the above-mentioned outer contour line corresponds to the fourth toe of the human foot, the end of the second arc segment connected to the third arc segment is located at a position where the above-mentioned outer contour line corresponds to the first toe of the human foot, the curvature of the third arc segment is greater than the curvature of the first arc segment, the curvature of the first arc segment is greater than the curvature of the second arc segment, the curvature of the second arc segment is greater than the curvature of the fourth arc segment, and each arc segment is convex in a direction away from the toe area.

[0008] As an improvement of the present invention, it further comprises an imitation insole body detachably connected to the lower surface of the shoe last body.

[0009] As an improvement of the present invention, a toe extension block is fixedly connected to the imitation insole body and is fitted on the side of the toe area away from the heel area.

[0010] As an improvement of the present invention, the thickness of the imitation insole body and / or the toe extension block is 4-5 mm.

[0011] As an improvement of the present invention, the imitation insole body and the shoe last body are connected by adhesive bonding or magnetic attraction.

[0012] As an improvement of the present invention, a positioning structure is provided between the imitation insole body and the shoe last body.

[0013] By adopting the above solution, the utility model has the following beneficial effects:

[0014] 1. Since the width of the heel area gradually increases from the back to the front, the widest dimension of the shoe cavity can be ensured to be located at the base of the toes in the forefoot, ensuring that the toes have sufficient space for movement. At the same time, by limiting the outer contour line of the toe area projected on the horizontal plane, it helps to improve the aesthetic appearance of the shoe and make the shoe relatively comfortable to wear after long-term exercise.

[0015] 2. By providing the imitation insole body, shoes without insoles and shoes with insoles can share the same shoe last body, which helps to reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the shoe last body structure of the forefoot wide-toe shoe last of the present invention;

[0017] Figure 2 This is a schematic diagram of the outer contour structure of the wide-toed forefoot shoe last of the present invention projected on a horizontal plane. To facilitate description of the positions within each arc segment, the figure illustrates the outer contour of a human foot. The positional relationship between the outer contour of the human foot and the outer contour of the shoe last is the same as the positional relationship between the sole of a foot worn in the inner cavity of a shoe produced using the shoe last and the inner contour of the shoe.

[0018] Figure 3 This is a schematic diagram of the matching structure of the shoe last body and the imitation shoe insole block in the present utility model.

[0019] The corresponding symbols in the figure are as follows:

[0020] 10- shoe last body; 11- toe area;

[0021] 12- heel area; 21- first arc segment;

[0022] 22-second arc segment; 23-third arc segment;

[0023] 24- fourth arc segment; 30- imitation insole body;

[0024] 31- Toe extension piece. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1-Figure 3 As shown, this embodiment provides a forefoot wide-toe shoe last, including a shoe last body 10. The shoe last body 10 includes a toe area 11 and a heel area 12 that are integrally connected in sequence. The toe area 11 is located at a position corresponding to the five toes of a human foot. It should be noted that there is a smooth transition between the toe area 11 and the heel area 12, and there is no clear dividing line between the two. The separation between the two is roughly located at a position corresponding to the base of the forefoot toes. In addition, for ease of explanation, in this embodiment, the direction toward the toe of the shoe last is the front of each component, and the corresponding other side is the rear of each component. The side of the shoe last facing the position corresponding to the big toe in the width direction is the inner side of the shoe, and the corresponding other side is the outer side of the shoe.

[0027] The width of the heel region 12 (since the width of the heel region 12 varies at different heights, the width mentioned in this embodiment refers to the maximum width of the heel region 12) gradually increases from the back to the front, so that the maximum width of the shoe last is located at the boundary between the toe region 11 and the heel region 12, ensuring that the toes have sufficient room to move. It should be noted that ensuring sufficient room for the toes to move is not uniform, and the rate of change of the width from the back to the front can be determined according to actual needs to ensure that the heel region 12 can form a curve on the inner side of the shoe, thereby allowing the shoe upper to better wrap the foot.

[0028] The outer contour line of the projection of the toe area 11 on the horizontal plane includes a first arc segment 21, a second arc segment 22, a third arc segment 23 and a fourth arc segment 24 that are smoothly connected in sequence, wherein the projection on the horizontal plane refers to the projection of the shoe last on the horizontal surface when the bottom surface of the shoe last is placed face down on the horizontal surface. One end where the first arc segment 21 is connected to the second arc segment 22 is located at a position where the above-mentioned outer contour line corresponds to the fourth toe of the human foot, one end where the second arc segment 22 is connected to the third arc segment 23 is located at a position where the above-mentioned outer contour line corresponds to the first toe (i.e., the thumb) of the human foot, and one end where the third arc segment 23 is connected to the fourth arc segment 24 is located at a position where the above-mentioned outer contour line corresponds to the joint of the first toe of the human foot. In addition, the curvature of the third arc segment 23 is greater than that of the first arc segment 21, the curvature of the first arc segment 21 is greater than that of the second arc segment 22, the curvature of the second arc segment 22 is greater than that of the fourth arc segment 24, and each arc segment is convex in the direction away from the toe area. The specific curvature value can be determined according to actual needs. Since the curvature of the third arc segment 23 is the smallest, a larger bend angle can be formed near the front side of the first toe of the human foot, ensuring the beautiful shape of the shoe head, and the curvature of the fourth arc segment 24 is the largest, which helps to improve the comfort of the first toe of the foot after wearing the shoe. Through the coordination of each arc segment, the outer contour line of the projection of the toe area 11 on the horizontal plane is relatively flat, which makes the tip of the shoe relatively wide and thick, effectively avoiding the toes being squeezed together, and better wearing comfort.

[0029] Taking into account that some shoes will be equipped with insoles in the shoe cavity in order to improve the comfort during natural walking, and some shoes will be designed with a structure without insoles in order to improve the wrapping of the shoes during running and prevent the shoes from moving relative to the feet during running, different shoe lasts need to be used for production. In this embodiment, the shoe last body 10 is designed to be a shoe last for producing shoes without insoles, that is, the shoe last body 10 can be used to produce shoes without insoles when used independently. At the same time, the shoe last provided in this embodiment also includes an imitation insole body 30 detachably connected to the lower surface of the shoe last body 10. The thickness of the imitation insole body 30 is 4-5mm. When it is necessary to produce shoes with insoles, it is only necessary to detachably connect the imitation insole body 30 to the lower surface of the shoe last body 10. The specific connection structure between the two can be a conventional structure, such as an adhesive connection or a magnetic connection, etc., which will not be described in detail here.

[0030] Preferably, the imitation insole body 30 is fixedly connected with a toe extension block 31 which is attached to the side of the toe area 11 away from the heel area 12. The thickness of the toe extension block 31 is 4-5 mm, which can further increase the space for toe movement when producing shoes with insoles.

[0031] In addition, a positioning structure is provided between the imitation insole body 30 and the shoe last body 10. Specifically, a plurality of positioning grooves (not shown in the figure) are provided on the bottom surface of the shoe last body 10, and a plurality of positioning columns (not shown in the figure) that match the positioning grooves one-to-one are fixedly connected to the upper side of the imitation insole body 30 to achieve corresponding connection.

[0032] The present invention has been described in detail above with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the above embodiments. Those skilled in the art can make various modifications to the present invention based on the existing technology, and all of these modifications fall within the scope of protection of the present invention.

Claims

1. A forefoot wide-toe shoe last, comprising a shoe last body, characterized in that: The shoe last body includes a toe area and a heel area which are connected in sequence as a whole. The toe area is located at a position corresponding to the five toes of the human foot. The width of the heel area gradually increases from the back to the front. The outer contour line of the projection of the toe area on the horizontal plane includes a first arc segment, a second arc segment, a third arc segment and a fourth arc segment which are smoothly connected in sequence. The end where the first arc segment is connected to the second arc segment is located at a position where the above-mentioned outer contour line corresponds to the fourth toe of the human foot. The end where the second arc segment is connected to the third arc segment is located at a position where the above-mentioned outer contour line corresponds to the first toe of the human foot. The curvature of the third arc segment is greater than that of the first arc segment, the curvature of the first arc segment is greater than that of the second arc segment, the curvature of the second arc segment is greater than that of the fourth arc segment, and each arc segment is convex in a direction away from the toe area.

2. The wide-toe forefoot shoe last according to claim 1, characterized in that: It also includes an imitation insole body detachably connected to the lower surface of the shoe last body.

3. The wide-toe forefoot shoe last according to claim 2, characterized in that: The imitation insole body is fixedly connected with a toe extension block which is attached to the side surface of the toe area away from the heel area.

4. The wide-toe forefoot shoe last according to claim 3, characterized in that: The imitation insole body and / or the toe extension block have a thickness of 4-5 mm.

5. The wide-toe forefoot shoe last according to any one of claims 2 to 4, characterized in that: The imitation insole body and the shoe last body are connected by adhesive bonding or magnetic attraction.

6. The wide-toe forefoot shoe last according to any one of claims 2 to 4, characterized in that: A positioning structure is provided between the imitation insole body and the shoe last body.

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