A roller device for skateboard sole

Abstract

The application relates to a pulley device for a skateboard sole, which comprises an inner core seat and a pulley assembly, the bottom surface of the inner core seat is provided with two left-right symmetrical grooves, the side walls of the grooves are provided with guide holes aligned with each other, the pulley assembly comprises an axle and two pulleys mounted on the axle, the axle is arranged on the side walls of the grooves along the guide holes and the two ends of the axle extend outward to the inner core seat, and the device further comprises a limiting device which is integrally formed by a control rod and a U-shaped blocking rod, the left and right sides of the U-shaped blocking rod are respectively provided with hook parts matched with the two ends of the axle, the top surface of the inner core seat is provided with a sliding groove, and the control rod extends to the rear side of the inner core seat along the sliding groove. The pulley of the application can be stretched out and retracted for many times, the structure of the guide hole is not deformed, the axle is not prone to loosening, the opening of the guide hole between the two grooves is detachably connected with a fixing piece, the fixing piece prevents the axle from falling off, and the sliding safety factor is high.

Description

Technical Field

[0001] This invention relates to the field of shoe sole technology, and in particular to a pulley device for the sole of a walking shoe. Background Technology

[0002] Heel shoes are unique athletic shoes with a wheel attached to the heel, allowing wearers to skate on the ground with just a few steps. They are also recreational sports shoes that are increasingly popular among modern people. Traditional heel shoes have a relatively simple structure and function, with the wheel and sole being separate parts. This type of shoe has the following drawbacks: 1. The wheel needs to be carried with you and is easily lost, rendering the heel unusable; 2. Installing or removing the wheel requires tools, which is time-consuming and laborious, making them inconvenient; 3. After a period of use, repeated prying and removing of the wheel with tools causes the axle to repeatedly squeeze the groove, easily leading to deformation and wear of the groove. Insufficient friction between the groove and the axle can cause the axle to loosen, and the wheel may even fall off during skating, posing a safety hazard of falls and injuries. Summary of the Invention

[0003] This invention provides a pulley device for the sole of Heely shoes to solve the problems of existing Heely shoes, such as the pulleys being easy to lose, the time-consuming and laborious process of installation and disassembly requiring tools, and the pulleys being easy to loosen and fall off, leading to falls and injuries.

[0004] The present invention adopts the following technical solution:

[0005] A pulley device for the sole of a walking shoe includes an inner core seat and a pulley assembly. The bottom surface of the inner core seat has two symmetrical grooves, and the side walls of the grooves have guide holes aligned with each other. The pulley assembly includes an axle and two pulleys mounted on the axle. The axle is mounted on the side wall of the groove along the guide holes, and both ends of the axle extend outward from the inner core seat. The pulleys are respectively placed in the grooves. A fixing member is detachably connected to the opening of the guide hole between the two grooves. The device also includes a limiting device, which is integrally formed by connecting a control rod and a U-shaped stop rod. The left and right sides of the U-shaped stop rod are respectively provided with hooks that cooperate to limit the ends of the axle. The top surface of the inner core seat has a sliding groove. The control rod extends outward from the rear of the inner core seat along the sliding groove. When the control rod is pushed forward until the hooks disengage from the axle, the pulleys can extend downward from the groove opening.

[0006] Further improvements include a housing with a cavity that extends vertically through the interior. The inner core seat is adapted to be inserted into the cavity. The bottom surface of the housing has two sliding tracks with sliding covers installed in the tracks to cover the openings of the cavity.

[0007] In a further improvement, a first compression spring is installed at the top of the guide hole between the grooves, and the lower end of the first compression spring abuts against the middle of the axle.

[0008] In a further improvement, a protrusion is provided on the rear side wall of the inner core seat, and a downwardly curved baffle is provided at the rear end of the control rod, with a second compression spring connecting the protrusion and the baffle.

[0009] In a further improvement, the aforementioned fastener has a round hole in which a screw is fitted, and the inner core seat has a screw hole groove in the middle. The fastener is connected to the inner core seat by inserting a screw into the screw hole groove.

[0010] In a further improvement, the left and right side walls of the inner core seat are provided with protruding edges, and the two sides of the U-shaped stop bar are abutted against the protruding edges.

[0011] In a further improvement, limiting protrusions are provided on both the left and right side walls of the inner core seat, and notches adapted to the limiting protrusions are provided on both sides of the housing.

[0012] In a further improvement, the aforementioned limiting device is made of metal.

[0013] As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

[0014] 1. The pulley of this application is assembled in the groove. Through the cooperation between the hook part of the limiting device and the wheel axle, the function of switching between flat mode and pulley mode can be realized. The pulley is kept hidden in the sole of the shoe, and it is not easy for the pulley to be lost.

[0015] 2. In this application, after the control lever of the limiting device moves forward until the wheel axle disengages from the hook, the first compression spring restores its deformation, causing the wheel axle to descend and the pulley to extend out of the housing. The second compression spring restores its deformation, causing the hook to return to its original position, and the wheel axle abuts against the outer edge of the hook. Therefore, the extension and retraction of the pulley does not require tools, saving time in finding tools. Moreover, the operation steps are simple and the use is quite convenient.

[0016] 3. The pulley of this application can extend and retract repeatedly without causing structural deformation of the guide hole, and the wheel axle is not easy to loosen. The guide hole opening between the two grooves is detachably connected with a fixing component, which prevents the wheel axle from falling off and ensures a high sliding safety factor. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the pulley device of the present invention.

[0018] Figure 2 This is a schematic diagram of the split structure of the pulley device of the present invention.

[0019] Figure 3 This is a side view schematic diagram of the split structure of the pulley device of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the inner core seat and limiting device of the present invention.

[0021] The components include: inner core seat 1, housing 2, limiting device 3, pulley 4, groove 10, second compression spring 11, protrusion 12, protruding edge 13, limiting protrusion 14, guide hole 101, screw hole groove 102, sliding groove 103, notch 140, cavity 20, sliding track 21, sliding cover 22, fixing piece 23, round hole 230, control rod 31, baffle 311, U-shaped stop bar 32, hook part 321, and wheel axle 41. Detailed Implementation

[0022] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0023] Reference Figures 1 to 3 A pulley device 4 for the sole of a roller shoe includes an inner core seat 1 and a pulley assembly. The bottom surface of the inner core seat 1 has two symmetrical grooves 10. The side walls of the grooves 10 have aligned guide holes 101, and the grooves 10 are connected to each other through the guide holes 101. The pulley assembly includes an axle 41 and two pulleys 4 mounted on the axle 41. The axle 41 is mounted along the guide holes 101 on the side walls of the grooves 10, with both ends of the axle 41 extending outwards from the inner core seat 1. The pulleys 4 are respectively placed inside the grooves 10, with the two grooves 10 separated by... The guide hole 101 is detachably connected to a fixing member 23 and also includes a limiting device 3. The limiting device 3 is integrally formed by connecting a control rod 31 and a U-shaped stop rod 32. The left and right sides of the U-shaped stop rod 32 are respectively provided with hook portions 321 that cooperate to limit the two ends of the wheel axle 41. The top surface of the inner core seat 1 is provided with a sliding groove 103. The control rod 31 extends along the sliding groove 103 to the rear side of the inner core seat 1. When the control rod 31 is pushed forward until the hook portion 321 disengages from the wheel axle 41, the pulley 4 can extend downward from the groove opening of the groove 10.

[0024] Reference Figure 1 , Figure 2 It also includes a housing 2, which has a cavity 20 that runs vertically through the interior. The inner core seat 1 is adapted to be inserted into the cavity 20. There is a gap between the left and right side walls of the inner core seat 1 and the inner side wall of the housing 2. The hook part 321 is inserted into the gap. The bottom surface of the housing 2 is provided with two sliding tracks 21. A sliding cover 22 for covering the opening of the cavity 20 is installed in the sliding track 21. The sliding cover 22 prevents sand and gravel from entering the groove 10, ensuring that the pulley 4 can extend or retract smoothly and can be used normally.

[0025] Reference Figure 2 A first compression spring (not shown in the figure) is installed on the top of the guide hole 101 between the grooves 10 and the grooves 10. The lower end of the first compression spring abuts against the middle of the axle 41. When the first compression spring recovers its deformation, it causes the axle 41 to move downward, and the groove 10 extends outward from the opening of the cavity 20.

[0026] The inner core seat 1 has a protrusion 12 on its rear side wall, and the control rod 31 has a downwardly bent baffle 311 at its rear end. A second compression spring 11 is connected between the protrusion 12 and the baffle 311. The second spring restores its deformation and causes the limiting device 3 to reset.

[0027] Reference Figure 2 , Figure 4 The aforementioned fixing member 23 has a circular hole 230, in which a screw is fitted. The inner core seat 1 has a screw hole groove 102 in the middle. The fixing member 23 is connected to the inner core seat 1 by inserting a screw into the screw hole groove 102. The upper wall of the housing 2 is sandwiched between the fixing member 23 and the inner core seat 1. The fixing member 23 ensures that the wheel axle 41 is not easily dislodged from the guide hole 101. At the same time, the fixing member 23 is detachable, and the guide hole 101 opens downwards, which facilitates the disassembly and assembly of the pulley assembly.

[0028] Reference Figure 2 The inner core seat 1 has protruding edges 13 on both the left and right side walls, and the U-shaped stop bar 32 is abutted against the protruding edges 13 on both sides.

[0029] Reference Figure 2 The inner core seat 1 is provided with limiting protrusions 14 on both the left and right side walls. The housing 2 is provided with notches 140 on both sides that are adapted to the limiting protrusions 14. The cooperation between the limiting protrusions 14 and the notches 140 makes it easy for the inner core seat 1 to accurately locate the cavity 20 for insertion.

[0030] The aforementioned limiting device 3 is made of metal, preferably iron.

[0031] Reference Figures 1 to 4 When gliding, slide the sliding cover 22 forward to open the opening of the cavity 20. Push the control lever 31 forward with your finger until the end of the axle 41 disengages from the hook part 321, releasing the hook part 321 from limiting the axle 41. The elastic force of the first compression spring restoring its deformation causes the axle 41 to slide down onto the fixing member 23. At the same time, the pulley 4 extends downward through the opening of the cavity 20, protruding from the sole. Release your finger, and the elastic force of the second compression spring 11 restoring its deformation causes the limiting device 3 to reset. The hook part 321 aligns with the guide hole 101. When gliding, the user's weight presses down, and the axle 41 moves up to the lower edge of the hook part 321. The hook part 321 prevents the axle 41 from moving upward, ensuring that the pulley 4 protrudes from the sole for normal gliding.

[0032] Continue to refer to Figures 1 to 4When using the flat-bottomed design, push the control lever 31 forward with your right hand until the hook part 321 is misaligned with the guide hole 101. Press the pulley 4 with your left hand to retract it into the groove 10. The wheel axle 41 moves up to the top of the guide hole 101. Release your right hand to release the pushing force on the control lever 31. The elastic force of the second compression spring 11 restoring its deformation causes the limiting device 3 to reset. The wheel axle 41 re-engages into the hook part 321. Release your left hand. The hook part 321 prevents the pulley 4 from popping down. Slide the sliding cover 22 to close the opening of the cavity 20. The operation is simple and convenient.

[0033] In this application, the control rod 31 of the limiting device 3 moves forward until the wheel axle 41 disengages from the hook part 321. The first compression spring restores its deformation, causing the wheel axle 41 to descend and the pulley 4 to extend out of the housing 2. The second compression spring 11 restores its deformation, causing the hook part 321 to return to its original position. The wheel axle 41 abuts against the outer edge of the hook part 321. Therefore, the extension and retraction of the pulley 4 do not require tools, saving time in finding tools. Moreover, the operation steps are simple and the use is quite convenient.

[0034] The above are merely specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A roller device for skateboard sole, comprising an inner core seat and a roller assembly, the bottom surface of the inner core seat is provided with two left-right symmetrical grooves, the side wall of the groove is provided with guide holes aligned with each other, the roller assembly comprises an axle and two rollers mounted on the axle, the axle is erected on the side wall of the groove along the guide hole and the both ends of the axle extend outward to the inner core seat, the rollers are respectively put into the grooves, and a fixing piece is detachably connected at the opening of the guide hole between the two grooves. Also include limiting device, the limiting device is integrally formed by control lever and U-shaped stop lever, the left and right sides of the U-shaped stop lever are respectively provided with hook parts matched with the two ends of the wheel shaft, the top surface of the inner core seat is provided with a sliding groove, the control lever extends to the rear side of the inner core seat along the sliding groove, when the hook parts are separated from the wheel shaft by pushing the control lever forward, the pulley can extend downward from the notch of the groove; Also include a shell, the shell is provided with a cavity in a top-down penetrating structure, the inner core seat is inserted into the cavity, the bottom surface of the shell is provided with two sliding tracks, and a sliding cover for covering the opening of the cavity is installed in the sliding tracks; A first compression spring is installed at the top of the guide hole between the groove and the groove, and the lower end of the first compression spring abuts against the middle part of the wheel shaft; A protrusion is arranged on the rear side wall of the inner core seat, a downwardly bent baffle is arranged at the rear end of the control lever, and a second compression spring is connected between the protrusion and the baffle; The fixing member is provided with a circular hole, a screw is assembled in the circular hole, the middle part of the inner core seat is provided with a screw hole groove, and the fixing member is connected with the inner core seat by inserting the screw into the screw hole groove; Protrusions are arranged on the left and right side walls of the inner core seat; Limiting protrusions are arranged on the left and right side walls of the inner core seat, and notches matched with the limiting protrusions are arranged on the two sides of the shell; When sliding, the sliding cover is slid forward to open the opening of the cavity, the control lever is pushed forward to separate the end of the wheel shaft from the hook part, the limiting of the wheel shaft by the hook part is released, the elastic force of the first compression spring restored from deformation promotes the wheel shaft to slide downward to the fixing member, at the same time, the pulley extends downward through the opening of the cavity, the pulley is exposed outside the sole, the fingers are released, the elastic force of the second compression spring restored from deformation promotes the limiting device to reset, the hook part is aligned with the guide hole, and when the sole slides, the gravity of the person presses downward, the wheel shaft moves upward to abut against the lower edge of the hook part, the hook part prevents the wheel shaft from moving upward, the pulley is exposed outside the sole, and normal sliding is ensured; When using a flat sole, the control lever is pushed forward by the right hand to misalign the hook part with the guide hole, the pulley is retracted into the groove by pressing the pulley with the left hand, the wheel shaft moves upward to the top of the guide hole, the right hand is released, the pushing force on the control lever is released, the elastic force of the second compression spring restored from deformation promotes the limiting device to reset, the wheel shaft is reinserted into the hook part, the left hand is released, the hook part prevents the pulley from popping out downward, the sliding cover is slid to close the opening of the cavity, and the operation is simple and convenient.

2. A wheel assembly for an aggressive shoe sole as defined in claim 1, wherein: The limiting device is made of metal.

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