Sole structure and step voltage prevention insulating shoes

Abstract

The utility model relates to the technical field of insulating shoes, in particular to a sole structure which comprises a sole, and a groove is formed in the bottom of the sole. The flexible rubber body is arranged in the groove body; the electric conductor is arranged in the groove body and matched with the flexible rubber body, and the electric conductor can slide in the groove body in the longitudinal direction. The beneficial effects of the utility model are that the electric conductor and the flexible rubber body insertion strip form a composite sliding unit, the composite sliding unit is arranged in the groove body, when walking, the unit slides along the longitudinal direction in the groove body and is guided by the carbon fiber support plate to prevent transverse deviation, and the elasticity of the flexible rubber body enables the unit to be dynamically compressed and expanded, so that the service life of the unit is prolonged. For example, when the heel falls to the ground, the pressure is concentrated on the heel, and when the heel is pushed away, the pressure is transferred to the front sole. According to the sliding mechanism, mechanical loads are evenly distributed on the shoe sole, local stress concentration is reduced, and therefore the risk of material fatigue or groove body collapse is reduced.

Description

Technical Field

[0001] This utility model relates to the field of insulating shoes, and in particular to a sole structure and an insulating shoe for preventing step voltage. Background Technology

[0002] When a grounding fault occurs in high-voltage equipment, indoor personnel should be at least 4 meters away from the fault point, and outdoor personnel should be at least 8 meters away. This rule is based on the fact that when a grounding fault occurs in electrical equipment, such as when a live conductor in an overhead line breaks and falls to the ground, the grounding current will spread outwards from the grounding point through the grounding device and the earth. This creates a potential distribution area on the earth's surface. Obviously, the potential varies at different locations within this area: the farther away from the grounding point, the more dispersed the current, and the lower the ground potential. When a person walks in this area, a step voltage is generated between their feet. When the step voltage reaches 40-50V, there is a risk of electric shock; in particular, the step voltage may cause a person to fall, further increasing the voltage they are exposed to, and even leading to death by electric shock. In other words, the magnitude of the step voltage is closely related to the distance between the person and the grounding point: the closer the person is to the grounding point, the greater the step voltage; conversely, the farther away, the smaller the step voltage.

[0003] Therefore, to ensure safety, professionals must wear insulated boots when performing maintenance to prevent personal injury caused by step voltage. However, existing insulated boots typically only provide basic insulation.

[0004] Patent application number 2019218585728 discloses an anti-step voltage insulating shoe with electrodes and an alarm module installed on the sole. This design affects the comfort of the insulating shoe and has drawbacks in terms of lifespan and safety during long-term wear. The connecting device on the sole is used to connect the contact electrodes. Although it can be disassembled and replaced when there is significant wear or dirt, its installation and connection use rigid devices such as positioning springs and slots, resulting in a complex structure prone to failure.

[0005] A wearable device for preventing step voltage injury, disclosed in patent application number 2019215780748, detects step voltage data in real time using a voltage detection device and transmits the data to a smart terminal. The smart terminal combines a built-in map, GPS positioning, and step voltage data to generate a location voltage trend map and can set a safety threshold. When the step voltage exceeds the threshold, an alarm is triggered. While this device can determine the direction between the grounding point and the person, guiding non-professionals to evacuate the grounding point promptly and accurately, it has limitations in areas with poor communication signals, such as mountainous areas, enclosed spaces, and basements, and relies on a complex smart terminal system.

[0006] Patent application number 2022228702791 discloses a type of anti-step voltage work shoe. It is designed so that when a worker realizes they have entered a high-voltage danger zone, a first buckle and a second buckle can be interlocked to electrically connect the first and second shoes, thereby preventing step voltage from forming between them. This allows workers to take small steps and calmly leave the high-voltage danger zone, avoiding the potential risks associated with jumping to escape.

[0007] However, when the above-mentioned devices are used, traditional insulated shoes are prone to material fatigue or tank collapse due to uneven load distribution and local stress concentration caused by static conductive elements on the soles; and workers often lack the ability to anticipate and react in time to "realize that they have entered a high-voltage dangerous area". Utility Model Content

[0008] Therefore, the technical problem to be solved by this utility model is that traditional insulating shoes are prone to material fatigue or trough collapse due to uneven load distribution and local stress concentration caused by static conductive elements on the sole.

[0009] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a shoe sole structure, which includes a shoe sole with a groove at the bottom; a flexible rubber body disposed in the groove; and a conductive body disposed in the groove and cooperating with the flexible rubber body, wherein the conductive body can slide longitudinally in the groove.

[0010] In a preferred embodiment of the shoe sole structure of this utility model, a support plate is further provided on the side wall of the groove.

[0011] In a preferred embodiment of the shoe sole structure of this utility model: the groove is a rectangular groove, and the support plate is arranged along the longitudinal extension direction of the groove.

[0012] In a preferred embodiment of the sole structure of this utility model: the side of the support plate extends away from the flexible rubber body.

[0013] In a preferred embodiment of the sole structure of this utility model: the cross-sectional shape of the conductive body is "mountain" shaped, and the protruding structure of the "mountain" shape matches the concave structure of the flexible rubber body.

[0014] The beneficial effects of this utility model are as follows: a conductive body with a "mountain" shaped cross section and a flexible rubber insert form a composite sliding unit, which is placed in the groove. When moving, the unit slides longitudinally in the groove and is guided by a carbon fiber support plate to prevent lateral deviation.

[0015] The elasticity of the flexible rubber body allows it to compress and expand dynamically, adapting to pressure changes in different areas of the sole. For example, when the heel lands, the pressure is concentrated on the heel, and when the foot moves away, the pressure is transferred to the forefoot.

[0016] This sliding mechanism distributes mechanical loads evenly across the sole, reducing localized stress concentrations and thus lowering the risk of material fatigue or groove collapse. Unlike static conductive elements in traditional insulated shoes, this design optimizes load distribution while maintaining electrical functionality through controlled mobility.

[0017] Given that in actual use, there are situations where high-voltage lines suddenly ground and generate step voltage when working near power distribution lines and equipment, staff often lack the ability to anticipate and react in time to "realize that they have entered a high-voltage danger zone".

[0018] To solve the above-mentioned technical problems, this utility model also provides the following technical solution: an anti-step voltage insulating shoe, including a sole structure, a conductive wire with conductive connectors at both ends connected to a conductor; a fixing member for fixing the conductive wire along the human leg; and a voltage detection alarm, which is disposed on the inside of the sole and electrically connected to the conductive wire.

[0019] In a preferred embodiment of the anti-step voltage insulating shoe of this utility model: the conductor is provided with a threaded hole, and the conductive connector of the conductive wire is connected and fixed to the threaded hole by a bolt.

[0020] In a preferred embodiment of the anti-step voltage insulating shoe of this utility model: the fixing component includes a strap, which fixes the conductive wire along the outside of the trouser leg of the lower leg and thigh.

[0021] In a preferred embodiment of the anti-step voltage insulating shoe of this utility model: the voltage detection alarm includes a voltage sensor and an alarm module. The voltage sensor is electrically connected to a conductive wire, and the alarm module triggers an alarm when it detects a voltage of a preset threshold.

[0022] In a preferred embodiment of the anti-step voltage insulating shoe of this utility model: the conductor and the conductive path of the sole are connected by conductive adhesive or riveting structure.

[0023] The beneficial effects of this invention are as follows: by sensing the ground voltage through a conductor, the voltage detection alarm will immediately sound an alarm when the voltage exceeds a safety threshold (such as 12V), providing early risk warning.

[0024] The conductors on the two soles are electrically connected by conductive wires to eliminate the potential difference between the two feet and avoid electric shock caused by step voltage.

[0025] By analyzing the difference in the strength of the alarm signals from the two shoes, the system helps users determine the location of the contact point and guides the evacuation route. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein:

[0027] Figure 1 A cross-sectional view of the shoe sole structure is shown;

[0028] Figure 2 A three-dimensional diagram of the conductive material in the shoe sole structure is shown;

[0029] Figure 3 A schematic diagram of the conductive wires in the anti-step voltage insulating shoe is shown;

[0030] Figure 4 A schematic diagram of the threaded hole of the anti-step voltage insulating shoe is shown. Detailed Implementation

[0031] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0032] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0033] Reference Figure 1-2 This embodiment provides a shoe sole structure, including a shoe sole 1, with a groove 2 formed along the direction from the heel to the toe; a flexible rubber body 3 disposed within the groove 2, having elasticity and suitable for absorbing impact force; a conductive body 4 embedded within the groove 2 and cooperating with the flexible rubber body 3, the conductive body 4 being able to slide longitudinally within the groove 2; and a support plate 5 disposed on the side wall of the groove 2 for reinforcing the structural strength of the groove 2; wherein, the support plate 5 extends towards the inner side of the bottom of the shoe sole 1 to improve the rigidity of the groove 2, and the conductive body 4 and the flexible rubber body 3 dynamically fill the groove 2 during movement to maintain the integrity of the shoe sole structure.

[0034] In this embodiment, the groove 2 is shaped like a "Π", the support plate 5 is made of high-strength carbon fiber, and the lower edge extends outward towards the sole 1. The groove 2 has a certain strength and is not easily deformed, ensuring that the flexible rubber body 3 can be freely compressed and expanded under the pressure of the human body weight, thus ensuring the comfort of the wearer.

[0035] The upper part of the flexible rubber body 3 is strongly bonded to the groove 2, and the lower part (towards the sole 1) is provided with an opening to facilitate easy insertion of the snap-fit ​​part of the conductive body 4 and maintain a certain elastic fastening force. After the conductive body 4 and the flexible rubber body 3 are snapped together, they are connected as a whole. The two side walls of the conductive body 4 along the length direction wrap around the flexible rubber body 3. Under the pressure of the human body weight, the flexible rubber body 3 can be freely compressed and expanded. The conductive body 4 can slide freely in the groove 2 under the drive of the flexible rubber body 3.

[0036] The conductor 4 has a mountain-shaped cross-section, with a mushroom-shaped protrusion in the middle that can be easily inserted into the opening of the flexible rubber body 3. Once inserted, the flexible rubber body 3 holds the mushroom head in place, and the flexible rubber body 3 and the cavity of the conductor 4 are tightly integrated, forming a single unit. The conductor 4 slides freely within the groove 2 as the flexible rubber body 3 moves freely. The end of the conductor 4 near the heel is turned upwards, and the cross-section of the turned-up conductor 4 is a flat strip. The flat surface of the conductor 4 has an internal threaded hole, a matching threaded screw, and a matching anti-loosening washer.

[0037] The "Π"-shaped groove 2 and the high-strength carbon fiber support plate 5 together form the rigid frame of the sole 1. The groove 2 provides space for the flexible rubber body 3 and the conductive body 4 to move, while the flanged design of the support plate 5 enhances the compressive strength, ensuring that the sole 1 can maintain its shape integrity during high-intensity sports activities.

[0038] The elastic cushioning of the flexible rubber body 3 and the sliding mechanism of the conductor 4 form a dynamic filling system. When the wearer applies pressure, the flexible rubber body 3 compresses and drives the conductor 4 to slide, absorbing the impact force; after the pressure is released, the flexible rubber body 3 expands and returns to its original shape, and the conductor 4 returns to its original position. This not only optimizes the cushioning effect but also reduces local wear and extends the service life through the sliding of the conductor 4.

[0039] The "mushroom head" structure and screw hole design of conductor 4 embody assembly flexibility and functionality. The mushroom head facilitates quick installation and ensures a secure connection, while the screw hole structure near the heel allows for additional adjustment or fixation, improving the adaptability and maintainability of sole 1.

[0040] refer to Figure 1-2 In one embodiment provided in this application, the groove 2 is a rectangular groove, and the support plate 5 is disposed on both side walls of the groove 2 along the longitudinal extension direction of the groove 2. The side of the support plate 5 extends away from the flexible rubber body 3 to further enhance the structural strength of the groove 2. The conductor 4 has a "mountain" shaped cross-section, and the protruding structure of the "mountain" matches the concave structure of the flexible rubber body 3 to achieve dynamic engagement between the conductor 4 and the flexible rubber body 3.

[0041] In this embodiment, a rectangular groove is formed in the sole 1 along the direction from the heel to the toe. This design provides space for the subsequent embedding of functional components. The longitudinal layout of the groove 2 follows the natural direction of foot movement, effectively dispersing the impact force from the heel to the forefoot, while also reserving a range of motion for the dynamic filling components.

[0042] A layer of flexible rubber 3 is installed inside the groove 2. This layer is elastic and can absorb the impact force generated during movement. This layer not only acts as a buffer, but also dynamically fills the groove 2 through its elastic deformation, ensuring the structural integrity of the sole 1 under stress.

[0043] The conductor 4 is embedded within the groove 2, and its cross-section is mountain-shaped, forming a matching concave-convex interlocking relationship with the structure of the flexible rubber body 3. The conductor 4 can slide longitudinally within the groove 2. This allows the conductor 4 to dynamically adjust its position during movement, maintaining the stability of the structure.

[0044] Support plates 5 are disposed on both side walls of the groove 2, extending longitudinally along the groove 2, with their sides turned inward toward the bottom of the sole 1. This structure significantly enhances the rigidity and deformation resistance of the groove 2. The support plates 5 not only strengthen the side wall strength of the groove 2, but also further improve the overall structural stability of the sole 1 through the bottom turned-in design, preventing the groove 2 from collapsing or tearing during high-intensity exercise.

[0045] The interlocking and longitudinal sliding design of the conductive body 4 and the flexible rubber body 3 forms a dynamic filling system. This adaptive mechanism can adjust the filling state inside the groove 2 in real time according to the intensity of movement and changes in force, which significantly improves the adaptability and durability of the structure compared to traditional static filling soles 1 (such as pure foam materials).

[0046] Reference Figure 1 and Figure 3 This embodiment provides a shoe sole structure, including a conductor 4 disposed at the heel for contact with the ground; a conductive wire 11 with conductive connectors at both ends, fixed to the conductor 4 by a detachable connection structure; a fastener 12 for fixing the conductive wire 11 along the human leg and fixing the excess part of the conductive wire 11 to the waist; and a voltage detection alarm 6 disposed on the inside of the shoe and electrically connected to the conductive wire 11 for detecting the ground voltage and issuing an alarm signal.

[0047] In this embodiment, the conductor 4 is disposed in the heel area as a medium for direct contact between the sole 1 and the ground, and is used to sense the voltage that may exist on the ground.

[0048] The conductive wire 11 is equipped with conductive connectors at both ends and is fixedly connected to the conductive body 4 at the heel via a detachable connection structure. This detachable design facilitates replacement or maintenance. The cable extends along the human leg and is securely fitted to the leg by the fastener 12, with the excess portion stored and fixed at the waist to prevent loosening or interference with walking.

[0049] The fastener 12 can be a mechanical structure such as a strap, fastener, or elastic sleeve, with an adjustable function to accommodate different body sizes.

[0050] The alarm is located on the inside of the shoe, specifically in the middle of the inside of both feet, and is electrically connected to the conductive wire 11.

[0051] By detecting the ground voltage, an alarm signal is issued when the voltage exceeds a safe threshold (e.g., 12V) to alert users of the potential risk of electric shock.

[0052] The sole 1 has a dedicated groove 2 for embedding a flexible rubber body 3, which is strongly bonded to the sole 1. The flexible rubber body 3 enhances the comfort and cushioning of the sole 1, and may also provide insulation, thus improving overall safety.

[0053] refer to Figure 3-4 As an optional embodiment, the conductor 4 is provided with a threaded hole 41, and the conductive connector of the conductive wire 11 is connected and fixed to the threaded hole 41 by bolts. The fastener 12 includes a strap that fixes the conductive wire 11 along the outside of the trouser leg of the lower leg and thigh. A waist belt fixing structure is used to wrap and fix the excess part of the conductive wire 11 around the waist.

[0054] In this embodiment, the conductor 4 is designed with a threaded hole 41, and the conductive connector of the conductive wire 11 is tightly connected and fixed to the threaded hole 41 by a bolt. This threaded connection method not only ensures the mechanical stability between the conductor 4 and the cable, but also guarantees the reliability of electrical signal transmission. The fit between the bolt and the threaded hole 41 facilitates installation and disassembly, and allows for replacement or adjustment of the cable connector when necessary, providing high flexibility.

[0055] The fastener 12 includes a strap that runs along the outside of the trouser leg and thigh to securely fasten the conductive wire 11 to the leg. The strap is designed to take full advantage of the natural contours of the leg, effectively preventing the cable from shifting or loosening during movement or daily activities. Furthermore, the strap may be made of an adjustable length or elastic material to accommodate different user leg sizes, improving wearing comfort and stability.

[0056] The waist belt fixing structure is used to wrap and secure the excess portion of the conductive wire 11 at the waist. This solves the inconvenience that can arise from excessively long cables, such as tangling or dragging. By neatly storing the excess cable at the waist, not only is the overall system more compact, but the risk of cable damage due to exposure is also reduced, while allowing the user greater flexibility during activity.

[0057] Compared to traditional welding or plug-in methods, threaded connections offer higher mechanical strength and maintainability. The tightening effect of bolts can resist external tensile forces, ensuring that the conductive joint maintains stable contact even under vibration or dynamic environments.

[0058] refer to Figure 3 In some embodiments, the voltage detection alarm 6 includes a voltage sensor and an alarm module. The voltage sensor is electrically connected to the conductive wire 11, and the alarm module triggers an alarm when it detects a voltage at a preset threshold. The alarm module includes a sound alarm and / or a vibration alarm, and the volume of the sound alarm is adjustable. The conductor 4 at the heel is connected to the conductive path of the sole 1 via conductive adhesive or a riveting structure.

[0059] In this embodiment, the voltage sensor monitors the voltage state in the circuit in real time through its electrical connection with the conductive wire 11. This is a highly efficient method for acquiring electrical signals, capable of responding quickly to voltage changes.

[0060] It ensures that voltage anomalies can be detected in a timely manner, making it suitable for scenarios requiring high safety, such as electric shock protection or battery status monitoring in smart footwear products.

[0061] The alarm module includes a sound alarm and / or a vibration alarm, providing a variety of alarm modes to choose from.

[0062] Multimodal alarms (sound + vibration) improve alarm reliability and user experience, especially in noisy environments where vibration alarms can supplement warnings and ensure users don't miss alerts.

[0063] The conductor 4 at the heel is connected to the conductive path of the sole 1 via conductive adhesive or a riveting structure, ensuring stable transmission of electrical signals within the footwear product. This connection method guarantees both mechanical strength and electrical performance. The use of conductive adhesive or riveting structures improves the reliability and durability of the connection, especially under conditions of frequent stress and wear in footwear products, effectively preventing circuit breakage or poor contact. Compared to welding or screwing, this structure is more suitable for connecting flexible materials and complex shapes.

[0064] In summary, when workers are operating near power lines or equipment, a sudden ground fault may cause a step voltage zone (i.e., a potential difference between different points on the ground) to form on the ground. To ensure the safety of workers, insulated shoes equipped with a voltage detection alarm are provided. Their working principle is as follows:

[0065] Scenario 1: Entering the step voltage region

[0066] As workers approach the area of ​​step voltage caused by a grounding fault, the voltage detection alarm 6 on the insulated shoes will detect the potential difference and issue an alarm signal.

[0067] Staff should immediately stop advancing and quickly retreat to a safe area where the alarm signal has disappeared, avoiding entering the dangerous area.

[0068] Scenario 2: Sudden grounding fault

[0069] If a grounding fault suddenly occurs while the worker is already working, causing them to be directly in the step voltage zone, the voltage detection alarm 6 on both insulated shoes will simultaneously issue an alarm signal.

[0070] The metal conductors 4 on the two insulated soles 1 are tightly connected by conductive wires 11, ensuring that the two soles 1 always maintain the same potential. Even if there is a potential difference on the ground, workers will not be electrocuted due to the voltage difference between their feet, greatly reducing the risk of electric shock.

[0071] Secondly, when the voltage detection alarms 6 of both shoes sound simultaneously, the difference in signal strength can be used as a basis for determining the location of the grounding point. The side with the stronger signal indicates that the foot is closer to the grounding fault point, while the side with the weaker signal is farther away from the fault point.

[0072] Staff should calmly move in the direction where the alarm signal is weaker and evacuate the step voltage area in a composed manner to avoid panic leading to misjudgment or falls.

[0073] Additionally, if the alarm signals on both shoes are roughly the same strength, it indicates that the grounding point may be located directly below the worker or be relatively evenly distributed around them. In this case, the worker should take the following steps:

[0074] Lift one foot and stand on one foot to break the step voltage loop.

[0075] Slowly move your body around to detect changes in alarm signals.

[0076] Once you find the direction with the weaker signal, gradually move in that direction until you are out of the danger zone.

[0077] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A sole structure characterized by: The utility model relates to a shoe sole structure with voltage detection alarm function, which comprises the following parts, a shoe sole (1) with a groove (2) in the bottom; a flexible rubber body (3) arranged in the groove (2); a conductive body (4) arranged in the groove (2) and matched with the flexible rubber body (3), wherein the conductive body (4) can slide in the groove (2); a conductive wire (11) with conductive connectors at both ends, wherein the conductive connectors are connected to the conductive body (4); a fixing part (12) for fixing the conductive wire (11); a voltage detection alarm (6) arranged on the inner side of the shoe sole (1) and electrically connected to the conductive wire (11); the voltage detection alarm (6) comprises a voltage sensor and an alarm module, wherein the voltage sensor is electrically connected to the conductive wire (11), and the alarm module triggers an alarm when detecting a voltage at a preset threshold.

2. The sole structure of Claim 1, wherein: a support plate (5) arranged on the side wall of the groove (2), wherein the conductive body (4) is in contact with the side wall of the support plate (5).

3. The sole structure of Claim 2, wherein: the groove (2) is a rectangular groove, and the support plate (5) extends along the longitudinal extension direction of the groove (2).

4. The sole structure of Claim 3, wherein: the side edge of the support plate (5) extends away from the flexible rubber body (3).

5. The sole structure of claim 4, wherein: the cross-sectional shape of the conductive body (4) is "mountain" shaped, and the convex structure of the "mountain" shape is matched with the concave structure of the flexible rubber body (3).

6. A step voltage isolation shoe, characterized by: the shoe sole structure according to any one of claims 1-5, and the conductive body (4) is provided with a threaded hole (41), and the conductive connectors of the conductive wire (11) are connected and fixed to the threaded hole (41) through bolts.

7. The insulating footwear of claim 6, wherein: the fixing part (12) comprises a binding belt for bonding the conductive wire (11).

8. The insulating footwear of claim 7, wherein: the conductive body (4) and the conductive path of the shoe sole (1) are connected through conductive glue or riveting structure.

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