Outdoor shoes assisting in going downhill

Abstract

The outdoor shoe comprises a shoe sole, a half sole air bag cushion is installed on the half sole portion of the shoe sole, the half sole air bag cushion comprises a first air bag portion used for buffering and a second air bag portion corresponding to a metatarsophalangeal joint area applied by a foot stepping on the ground, and the second air bag portion has a first state and a second state. Under the natural condition, the pressure value of the second state is larger than that of the first state, the second air bag part is converted into the second state from the first state before stepping on the ground, the internal pressure of the second air bag part is dynamically increased to be suitable for stepping-on springback, and the second air bag part is in the first state when going down the mountain. The second air bag part capable of adjusting the pressure of the half sole is arranged on the half sole, the first air bag part is used for buffering at the buffering position of the half sole during climbing or walking on the flat ground, the rebound resilience of the half sole is improved by dynamically increasing the pressure of the second air bag part before stepping on the ground, and the half sole touches the ground synchronously during climbing. The second air bag part is in the first state to reduce the pressure, and the cushioning effect is achieved.

Description

Technical Field

[0001] The invention relates to outdoor shoes for assisting descent. Background Art

[0002] "It's easier to climb up than to descend" describes the objective phenomenon of mountaineering. From a professional perspective, descending a mountain is significantly different from walking on flat ground. First, when descending a mountain, gravitational potential energy is converted into kinetic energy, and the human body has a tendency to rush forward. From a physical perspective, it is very dangerous to have the center of gravity positioned forward. Therefore, when descending a mountain, avoid walking in a straight line. Usually, an S-shaped route is adopted to prevent the gravitational potential energy from being converted too quickly and exceeding the frictional resistance provided by the feet. Even so, the leg muscles and joints will be subjected to a greater impact than on flat ground. Second, to prevent the body from rushing forward, the center of gravity cannot shift forward when descending a mountain. The body should be slightly tilted back, and the heel and forefoot generally touch the ground at the same time. The thumb and pinky toe areas of the forefoot should also touch the ground at the same time. The purpose is to increase the contact area and improve the frictional resistance to balance the body's forward rush. This is completely different from the order of heel first and forefoot second when walking on flat ground.

[0003] When considering the use of going downhill, the requirements of going uphill also need to be considered. When going uphill, work needs to be done to overcome the potential energy of gravity, which requires more energy than walking on flat ground. Therefore, the issue of energy recovery needs to be considered. The rebound material used as a power assist is very different from the cushioning material. When walking, the driving force is mainly applied to the area between the big toe and the little toe, that is, the forefoot. Existing mountaineering shoes mainly solve the problems of anti-slip and ankle protection. For example, the publication number CN107224030A is titled "Anti-slip Shoe Based on Gravity Control". There is a lack of targeted solutions for how to buffer impact force and enhance stability. In particular, when going uphill, the higher energy consumption requires improving the rebound performance of the forefoot to save physical strength. With the unique gait of going downhill, the forefoot and heel land on the ground simultaneously, and the forefoot also needs to be cushioned. This is inconsistent with the existing use of cushioning materials for the heel and power-assisted rebound materials for the forefoot. Summary of the Invention

[0004] In view of the above shortcomings, the object of the present invention is to provide an outdoor shoe that assists in going downhill.

[0005] To this end, the present invention provides an outdoor shoe for assisting in mountain descent, comprising a sole, wherein a forefoot airbag cushion is installed on the forefoot portion of the sole, the forefoot airbag cushion comprising a first airbag portion for cushioning and a second airbag portion corresponding to the metatarsophalangeal joint area where the foot pushes off the ground, the second airbag portion comprising a first state and a second state, the pressure value of the second state being greater than that of the first state under natural conditions, the second airbag portion dynamically increasing its internal pressure from the first state to the second state before pushing off the ground for rebound upon pushing off the ground, and the second airbag portion being in the first state when going downhill.

[0006] Furthermore, it includes a one-way air inlet channel, the two ends of which are respectively connected to the first airbag part and the second airbag part. When the sole of the foot applies pressure to the first airbag part, the first airbag part intakes air to the second airbag part through the one-way air inlet channel, so that the second airbag part changes from the first state to the second state.

[0007] Furthermore, it also includes a reflux channel, the two ends of which are respectively connected to the first airbag part and the second airbag part, so that when the foot is lifted, the gas in the second airbag part enters the first airbag part through the reflux channel, so that the second airbag part changes from the second state to the first state.

[0008] Furthermore, the reflux channel is an elastic pipe, and the lower surface of the second airbag part on the upper and lower sides of the elastic pipe and the sole body below the second airbag part are fixed with clips, and the fixed clips are used to close the elastic pipe under force.

[0009] Furthermore, the first airbag portion includes a first cavity communicated with the one-way air inlet channel and the reflux channel and a second cavity independent of the first cavity, wherein the second cavity is provided with an appropriate amount of gas for buffering.

[0010] Furthermore, the first airbag portion has multiple independent second cavities; the multiple second cavities are arranged together and in the middle of the first airbag portion, and the first cavity is arranged outside the second cavity area; or the second cavity is dispersed in the first cavity.

[0011] Furthermore, the sole is provided with a resistance device cooperating with the insole, and the resistance device increases the contact area with the insole or increases the force to reduce the sliding of the foot relative to the sole.

[0012] Furthermore, the sole includes a midsole, and a cushioning airbag is provided at the heel of the sole. The cushioning airbag is connected to an airbag pressure cover above the cushioning airbag, and the airbag pressure cover is fixed to the lower surface of the midsole. The airbag pressure cover extends toward the arch of the foot and fixes a push rod. The push rod is provided with a rack, and the rack is provided in a fixed box. The fixed box is provided with a gear that rotates with the rack. The gear is coaxially connected to a cylinder. A connecting part is fixed on the cylinder, and the connecting part extends out of the box from a reserved opening of the box. The end of the connecting part is connected to a transversely arranged plate. A pad is fixed above the plate, and the pad passes through the hole on the midsole so that the upper surface of the pad cooperates with the lower surface of the pad bottom. The plate and the pad are arranged at positions corresponding to the arch of the foot.

[0013] Furthermore, the contact surface between the pad body and the pad bottom is serrated or concave-convex.

[0014] Furthermore, an arch pad is provided on the bottom of the pad.

[0015] The beneficial technical effects of the present invention are:

[0016] (1) The present invention provides an outdoor shoe for assisting in going downhill. The forefoot airbag cushion is provided with a first airbag portion for cushioning and a second airbag portion corresponding to the metatarsophalangeal joint area of ​​the foot pushing off the ground. The second airbag portion includes a first state and a second state. An airbag with a certain pressure is a good cushioning structure. Its cushioning effect is better than that of general EVA sole materials. When the pressure value of the airbag is increased, the rebound ability of the airbag can be significantly improved. The present invention provides a second airbag portion with adjustable pressure at the forefoot. When walking uphill or on flat ground, the first airbag portion is used for cushioning at the forefoot cushioning position, and the rebound resilience is improved by dynamically increasing the pressure of the second airbag portion before pushing off the ground. When going downhill, the forefoot touches the ground synchronously, and the second airbag portion is in the first state to reduce its pressure, thereby achieving a shock absorbing effect.

[0017] (2) When going downhill, theoretically, it is best to have the forefoot and heel touch the ground at the same time. However, due to the complexity of the terrain, center of gravity, and posture, it is very likely that the heel will touch the ground first. At this time, the contact area is significantly smaller than the theoretical situation. Although the anti-skid performance of the soles of mountaineering shoes is specially enhanced, the soles and the ground may not slide, but there will be a forward rush between the soles of the feet and the soles. At this time, the forefoot and the soles are not firmly stepped on, which is easy to slip, causing the center of gravity to lose balance and fall. The risk of falling when going downhill is much greater than walking on flat ground. In a specific embodiment of the present invention, by setting a resistance device at the arch position, when the heel is stepped on, the resistance device will generate a force between the bottom of the pad and the sole of the foot, thereby increasing the friction between the sole of the foot and the bottom of the pad and reducing the possibility of slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the setting of the sole airbag;

[0019] Figure 2 is a schematic diagram of the arrangement of the first airbag unit;

[0020] Figure 3 is a schematic diagram of the arrangement of the second airbag unit;

[0021] Figure 4 A schematic diagram of a second cavity arrangement;

[0022] Figure 5 This is a schematic diagram of the bottom;

[0023] Figure 6 Schematic diagram of the setting of the heel cushioning airbag and resistance device.

[0024] Explanation of the accompanying drawings: 1. sole; 2. forefoot airbag cushion; 201. first airbag part; 202. second airbag part; 203. first cavity; 204. second cavity; 3. cushioning airbag; 4. one-way air inlet channel; 5. return channel; 6. clip; 7. bottom pad; 8. midsole; 9. airbag pressure cover; 10. push rod; 11. box body; 13. rack; 14. gear; 15. connecting part; 16. plate body; 17. pad body. DETAILED DESCRIPTION

[0025] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0026] Reference Figures 1 to 4As shown, the present invention provides an outdoor shoe for assisting in mountain descent, comprising a sole 1, a forefoot airbag cushion 2 being installed on the forefoot portion of the sole 1, the forefoot airbag cushion 2 comprising a first airbag portion 201 for cushioning and a second airbag portion 202 corresponding to the metatarsophalangeal joint area for applying force when the foot pushes off the ground, the second airbag portion 202 comprising a first state and a second state, under natural conditions, a pressure value of the second airbag portion in the second state is greater than that in the first state, the second airbag portion 202 dynamically increases its internal pressure from the first state before pushing off the ground to be suitable for rebounding from pushing off the ground, and the second airbag portion 202 is in the first state when going downhill. When walking on flat ground, there is actually a certain difference between the metatarsophalangeal joint area and the forefoot cushioning area. The cushioning area when the forefoot steps down is slightly further back. The first airbag section 201 of this embodiment is arranged between the arch of the foot and the second airbag section 202. The forefoot airbag cushion 2 is pre-formed from a rubber material and then fixed to the sole 1. The bottom pad 7 is fixed on top of the forefoot airbag cushion and can be fixed by gluing or other methods. The main body of the sole 1 is formed of materials such as EVA and PU. The first airbag section 201 and the second airbag section 202 are connected by two pipes, one of which is provided with a one-way valve (not shown in the figure) to form a one-way air inlet channel 4. When the first airbag section 201, which serves as a cushion, is deformed by force when the foot steps down, the pressure in the first airbag section 201 increases, and the gas in the first airbag section 201 flows to the second airbag section 202. Another pipe is made of elastic material and passes under the bottom of the second airbag section 202. A plastic cushioning layer is provided at the bottom of the second airbag section 202, and two plastic clips 6 are provided below the cushioning layer. The elastic pipe passes between the clips 6. When the sole of the foot steps down, the second airbag section 202 is compressed and squeezes the clips 6, closing the return channel 5 formed by the elastic pipe. This prevents gas from flowing from the second airbag section 202 to the first airbag section 201 during the transition from the stepping-down cushioning stage to the lifting of the rear of the forefoot during push-off. This keeps the first airbag cushion in the second state, allowing the sole 1 to provide sufficient rebound force. When the forefoot is fully lifted, the return channel 5 is restored, and the gas flows back to the first airbag section 201. After the gas in the first airbag section 201 flows into the second airbag section 202, the air pressure in the first airbag section 201 decreases. Excessively low air pressure obviously reduces the cushioning effect. Increasing the pressure in the first airbag section 201 by returning the gas improves its cushioning ability. When going downhill, the first airbag section 201 and the second airbag section 202 of the forefoot are stepped down synchronously, and the first airbag section 201 and the second airbag section 202 are subjected to basically the same pressure. Therefore, the first airbag section 201 and the second airbag section 202 will not produce an obvious pressure difference, and the pre-charged pressure value of the first airbag section 201 and the second airbag section 202 is suitable for cushioning when going downhill, that is, the pre-charged pressure value is slightly higher than the cushioning pressure value required for walking on flat ground. For example, the initial pressure value of the first airbag section 201 and the second airbag section 202 is slightly greater than the standard atmospheric pressure. The pressure value of the second airbag section 202 in the second state can be approximately 1.2 to 1.5 standard atmospheric pressures, and it reaches a pressure value of 2 to 3 standard atmospheric pressures after stepping on the pressure.

[0027] In the above embodiment, when the foot steps down, the gas in the first airbag portion 201 flows into the second airbag portion 202, thereby reducing the peak air pressure of the first airbag portion 201 during impact, and failing to achieve the preset cushioning effect. Figure 3 As shown, an improved technical solution is that the first airbag portion 201 includes a first cavity 203 connected to the one-way air inlet channel 4 and the return channel 5, and a second cavity 204 independent of the first cavity 203. The second cavity 204 is provided with an appropriate amount of gas for buffering. The first airbag portion 201 has multiple independent second cavities 204; the second airbag can be cylindrical, and the airbag walls of adjacent second cavities 204 are shared, such as a regular hexagon. The second cavities 204 of the airbag are arranged together to form a honeycomb shape and are located in the middle of the first airbag portion 201, and the first cavity 203 is located outside the second cavity 204 area. Figure 4 As shown, the second cavities 204 can also be grouped, with one or more second cavities 204 being provided as a group, and each group of second cavities 204 being spaced apart to form a structure dispersed in the first cavities 203. Since the gas in the second cavities 204 does not participate in the flow, a good buffering effect can be ensured.

[0028] In the above embodiment, referring to Figure 5 and Figure 6As shown, the sole 1 is provided with a resistance device that cooperates with the insole 7. The resistance device increases the contact area with the insole 7 or increases the force to reduce the sliding of the foot relative to the sole 1. Specifically, the sole 1 includes a midsole 8, a cushioning airbag 3 is provided at the heel of the sole 1, and an airbag pressure cover 9 is connected above the cushioning airbag 3. The airbag pressure cover is made of a plastic sheet, and the airbag pressure cover 9 is fixed to the lower surface of the midsole 8. The airbag pressure cover 9 extends toward the arch of the foot, and a plastic push rod 10 is fixed to its lower surface. The push rod 10 is provided with a rack 13, and the rack 13 is arranged in a plastic fixing box, and the fixing box is fixed in the sole 1, wherein a gear 14 is provided for rotating with the rack 13. The gear 14 is coaxially connected to the cylinder, and a connecting part 15 is fixed on the cylinder. The connecting part 15 can be a rod or a plate. The connecting part 15 extends out of the reserved opening of the box body 11, and the end of the connecting part 15 is connected to a transversely arranged plate body 16. A pad body 17 is fixed above the plate body 16. The pad body 17 is made of the same material as the sole 1. The pad body 17 passes through the hole on the midsole 8 so that the upper surface of the pad body 17 cooperates with the lower surface of the insole 7, and the plate body 16 and the pad body 17 are arranged at the position corresponding to the arch of the foot. The resistance device is mainly used to increase the stability of hiking shoes. After the heel is stepped on, the cushioning airbag deforms and cushions, the push rod moves downward a short distance, the rack drives the gear to rotate, and drives the connecting part to rotate, the plate body rotates upward by a certain angle, driving the pad body 17 upward, and applying a force to the arch of the foot that is stepped on downward, actively increasing the force between the bottom of the foot 7 and the bottom of the foot at the arch position, improving frictional resistance, and preventing the sole of the foot and the bottom of the foot 7 from slipping. Of course, this technical solution can also be replaced by another airbag, which is connected to the cushioning airbag, and gas is injected into the cushioning airbag after the cushioning airbag is pressurized. Generally, the bottom of the foot 7 can be fixed to the sole 1, and some are not fixed. In this embodiment, the contact surface between the pad body 17 and the bottom of the foot 7 can also be serrated or concave-convex to prevent slippage between the two. In order to increase the friction between the arch of the foot and the bottom of the foot 7, the bottom of the foot 7 is provided with an arch pad. After the pad body 17 actively applies pressure upward, it can make the arch of the foot better fit with the bottom of the foot 7.

Claims

1. An outdoor shoe for assisting descent, comprising a sole, characterized in that: A forefoot airbag cushion is installed on the forefoot part of the sole, and the forefoot airbag cushion includes a first airbag part for cushioning and a second airbag part corresponding to the metatarsophalangeal joint area of ​​the foot pushing off the ground. The second airbag part includes a first state and a second state. Under natural conditions, the pressure value of the second state is greater than that of the first state. The second airbag part changes from the first state to the second state before pushing off the ground to dynamically increase its internal pressure for pushing off the ground rebound. The second airbag part is in the first state when going downhill.

2. The outdoor shoe for assisting descent according to claim 1, characterized in that: It includes a one-way air inlet channel, the two ends of which are respectively connected to the first airbag part and the second airbag part. When the sole of the foot applies pressure to the first airbag part, the first airbag part inhales air into the second airbag part through the one-way air inlet channel, so that the second airbag part changes from the first state to the second state.

3. The outdoor shoe for assisting descent according to claim 2, characterized in that: It also includes a reflux channel, the two ends of which are respectively connected to the first airbag part and the second airbag part, so that when the foot is lifted, the gas in the second airbag part enters the first airbag part through the reflux channel, so that the second airbag part changes from the second state to the first state.

4. The outdoor shoe for assisting descent according to claim 3, characterized in that: The reflux channel is an elastic pipe, and fixed clips are provided on the lower surface of the second air bag portion on the upper and lower sides of the elastic pipe and on the sole body below the second air bag portion. The fixed clips are used to close the elastic pipe under force.

5. The outdoor shoe for assisting descent according to any one of claims 1 to 4, characterized in that: The first airbag portion includes a first cavity communicating with the one-way air inlet channel and the reflux channel and a second cavity independent of the first cavity, wherein a proper amount of gas for buffering is provided in the second cavity.

6. The outdoor shoe for assisting descent according to claim 5, characterized in that: The first airbag portion has a plurality of independent second cavities; A plurality of second cavities are arranged together and in the middle of the first airbag portion, the first cavity is arranged outside the second cavity area; or the second cavities are dispersed in the first cavity.

7. The outdoor shoe for assisting descent according to any one of claims 1 to 4, characterized in that: The sole is provided with a resistance device matched with the insole. The resistance device increases the contact area with the insole or increases the force to reduce the sliding of the foot relative to the sole.

8. The outdoor shoe for assisting descent according to claim 7, characterized in that: The sole includes a midsole, a cushioning airbag is provided at the heel portion of the sole, an airbag pressure cover is connected above the cushioning airbag, the airbag pressure cover is fixed to the lower surface of the midsole, the airbag pressure cover extends toward the arch of the foot and fixes a push rod, the push rod is provided with a rack, the rack is provided in a fixing box, the fixing box is provided with a gear that rotates in coordination with the rack, the gear is coaxially connected to a cylinder, a connecting part is fixed on the cylinder, the connecting part extends out of the reserved opening of the box body, the end of the connecting part is connected to a transversely arranged plate body, a pad body is fixed above the plate body, the pad body passes through the hole on the midsole so that the upper surface of the pad body cooperates with the lower surface of the pad bottom, and the plate body and the pad body are arranged at positions corresponding to the arch of the foot.

9. The outdoor shoe for assisting descent according to claim 8, characterized in that: The contact surface between the pad body and the pad bottom is tooth-shaped or concave-convex.

10. The outdoor shoe for assisting descent according to claim 9, characterized in that: An arch pad is provided on the pad bottom.

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