Liftable pulley device

Abstract

The utility model relates to a lifting pulley device which comprises a base, at least one containing groove is formed in the base, a pulley is installed in the containing groove, guide holes are formed in the left side wall and the right side wall of the containing groove respectively, the pulley is provided with a wheel shaft penetrating through the guide holes, an upper cover is arranged at an opening of one guide hole, and rails are arranged on the two sides of the base. The two sides of a U-shaped control rod are inserted into the rails respectively, hook parts matched with and limiting the ends of the wheel shafts are arranged on the two sides of the control rod, and a compressed spring is arranged between the rear side wall of the base and the U-shaped control rod. According to the pulley device, the U-shaped control rod is in sliding fit with the track, a compressed spring reset mechanism is combined, and a user only needs to push the control rod to achieve rapid lifting of the pulley; according to the roller shoes, the rollers can be unfolded or folded with one hand without tools such as a screwdriver, a user can easily complete operation in a short time, and the use convenience of the roller shoes is improved.

Description

Technical Field

[0001] This utility model relates to the field of roller shoe pulley components, and in particular to a liftable pulley device. Background Technology

[0002] Heeled shoes, as a novel leisure and entertainment product, have gradually gained popularity in the market in recent years. By installing wheels on the soles, they allow wearers to glide and walk on flat surfaces, combining exercise and entertainment functions. However, existing Heeled shoes have revealed numerous problems during use, seriously affecting user experience and safety.

[0003] Existing roller skate designs have several shortcomings. Firstly, the rollers are not securely fixed, making them prone to loosening or even detaching during use. This not only causes the wearer to lose balance while skating, increasing the risk of falls and injuries, but also potentially hazards to those around them and the environment. Secondly, the installation and removal of the rollers is complex, requiring additional tools, which is time-consuming and laborious, significantly reducing the ease of use of roller skates. Therefore, developing a device that effectively prevents roller loss, simplifies the installation and removal process without tools, and improves the secure fixing of the rollers has become an urgent problem to be solved. Summary of the Invention

[0004] This utility model provides a liftable pulley device to solve the problems of existing pulleys being unstable, time-consuming and laborious to install and disassemble.

[0005] The present invention adopts the following technical solution:

[0006] A liftable pulley device includes a base with at least one receiving groove inside the base. A pulley is installed in the receiving groove. Guide holes are provided on both the left and right side walls of the receiving groove. The pulley is provided with an axle that passes through the guide hole. A cover is provided at the opening of one of the guide holes. The device also includes a U-shaped control rod. Tracks are provided on both sides of the base. The two sides of the U-shaped control rod are respectively inserted into the tracks. Both sides of the control rod are provided with hook portions that cooperate to restrict the ends of the axles. A compression spring is provided between the rear side wall of the base and the U-shaped control rod. When the U-shaped control rod is pushed towards the front end of the base until the ends of the axles disengage from the hook portions, the pulley descends along the guide holes and extends out of the receiving groove opening.

[0007] Furthermore, the base is fitted with a housing, the bottom wall of which has a through hole aligned with the receiving groove, and a sliding groove is provided at the opening of the through hole, with a sliding cover for sealing the through hole disposed in the sliding groove.

[0008] Furthermore, the base is provided with two receiving slots, and the axle passes through the pulleys in the two receiving slots simultaneously.

[0009] Furthermore, the top wall of the guide hole between the aforementioned receiving grooves is provided with a groove, and a reset component for causing the aforementioned wheel axle to descend is provided in the groove.

[0010] Furthermore, the aforementioned reset component is a compression spring or a cylindrical rubber.

[0011] Furthermore, a limiting part is provided in the middle of the aforementioned U-shaped control lever, and the rear end of the aforementioned compression spring is correspondingly abutted against the limiting part.

[0012] Furthermore, a sliding groove is provided at the opening of the aforementioned through hole, and a sliding cover for closing the aforementioned through hole is disposed in the sliding groove.

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

[0014] 1. The pulley device of this application uses a U-shaped control rod to slide with the track, combined with a spring reset mechanism. Users only need to push the control rod to realize the rapid raising and lowering of the pulley. It is easy to operate and does not require the use of screwdrivers or other tools. The pulley can be unfolded or stored with one hand. Users can easily complete the operation in a short time, which improves the convenience of using Heely shoes. Whether it is daily storage or temporary replacement of pulleys, it can be easily handled.

[0015] 2. The mechanical limiting design of the hook and axle in this application, combined with the continuous downward pressure of the reset component on the axle, causes the pulley to automatically pop out when the axle is disengaged from the hook; when the pulley is extended, the hook and axle form a rigid lock, which greatly reduces the risk of the pulley loosening during sliding.

[0016] 3. The through hole on the bottom wall of the housing in this application cooperates with the sliding cover to achieve a sealing protection. When the sliding cover is closed, it can prevent dust and water stains from entering the receiving groove and extend the service life of the device.

[0017] 4. The base and shell of this application can be adapted to various shoe models, which facilitates mass production and personalized customization. It is not only suitable for Heelys, but can also be extended to scenarios such as suitcases and scooters that require lifting wheels, showing significant market potential. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the pulley device of this utility model.

[0019] Figure 2 This is a three-dimensional structural diagram of the base of this utility model.

[0020] Figure 3 This is a top view of the base of this utility model.

[0021] Figure 4 This is a three-dimensional structural diagram of the U-shaped control lever of this utility model.

[0022] Figure 5 This is a schematic diagram of the pulley device of this utility model when it is installed on the sole of a shoe. Detailed Implementation

[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0024] Reference Figures 1-4 A liftable pulley 41 device includes a base 1, which has at least one receiving groove 10. A pulley 41 is installed in the receiving groove 10. Guide holes 101 are provided on both the left and right side walls of the receiving groove 10, extending to the opening of the receiving groove 10. The pulley 41 is provided with an axle 4 passing through the guide hole 101. The pulley 41 is mounted in the receiving groove 10 along the guide hole 101 via the axle 4. The base 1 has two receiving grooves 10, and the axle 4 simultaneously passes through the pulley 41 in both receiving grooves 10. A top cover 31 is provided at the opening of the guide hole 101 in the middle of the base 1. The top cover 31 is connected to the base 1 by screws, effectively preventing the axle 4 from falling off. It also includes a U-shaped control rod 2. The base 1 has rails 11 on both sides. The two sides of the U-shaped control rod 2 are respectively inserted into the rails 11. Both sides of the control rod are provided with hooks 21 that cooperate to restrict the ends of the wheel axle 4. A compression spring 23 is provided between the rear side wall of the base 1 and the U-shaped control rod 2. When the U-shaped control rod 2 is pushed towards the front end of the base 1 until the end of the wheel axle 4 is disengaged from the hooks 21, the wheel axle 4 descends along the guide hole 101, and the pulley 41 descends and extends out of the groove of the receiving groove 10.

[0025] Reference Figure 1 The base 1 is fitted with a housing 3 on its outer side. The bottom wall of the housing 3 is provided with a through hole 30 aligned with the receiving groove 10. A sliding groove 33 is provided at the opening of the through hole 30, and a sliding cover 32 for closing the through hole 30 is disposed in the sliding groove 33.

[0026] Reference Figure 2 , Figure 3 The top wall of the guide hole 101 between the accommodating groove 10 and the accommodating groove 10 is provided with a groove (not shown in the figure). The groove is provided with a reset component 102 for causing the wheel shaft 4 to descend. The reset component 102 is a compression spring or a cylindrical rubber, preferably a compression spring.

[0027] Reference Figures 2-4 A limiting part 22 is provided in the middle of the aforementioned U-shaped control lever 2. The rear end of the aforementioned compression spring 23 is correspondingly abutted against the limiting part 22. The limiting part 22 is U-shaped, which facilitates the limiting of the compression spring 23 and prevents misalignment, ensuring that the U-shaped control lever 2 returns to its normal position. The limiting part 22 is close to the heel of the shoe, and the button 5 is abutted against the limiting part 22. The control lever has a short range of movement, occupies little space, and has a more reasonable structural design.

[0028] Reference Figures 1-5 In use, open the sliding cover 32, press button 5, the U-shaped control lever 2 slides forward along the track 11, the axle 4 disengages from the hook part 21, the spring force of the reset component 102 in the middle of the base 1 restores its deformation, causing the axle 4 to slide down to abut against the upper cover 31, the pulley 41 extends out of the groove of the receiving slot 10, release button 5, the spring force of the compression spring 23 restores its deformation, causing the control lever to reset, so that the outer edge 211 of the hook part 21 aligns with the guide hole 101, the axle 4 abuts against the outer edge 211 of the hook part 21, and the pulley 41 can support rolling. Alternatively, when not in use, press button 5, the hook part 21 deviates from the guide hole 101, lifts the pulley 41 upwards into the receiving slot 10, the end of the axle 4 aligns with the hook part 21, release button 5, the hook part 21 engages with the end of the axle 4, preventing the pulley 41 from extending outwards, and the sliding cover 32 closes. Users can easily complete the operation in a short time, which improves the convenience of using Heely shoes. Whether it is daily storage or temporary replacement of wheels, it can be handled with ease.

[0029] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A liftable pulley device, comprising a base, wherein at least one receiving groove is provided in the base, a pulley is installed in the receiving groove, guide holes are provided on both the left and right side walls of the receiving groove, the pulley is provided with an axle passing through the guide hole, and a top cover is provided at the opening of one of the guide holes, characterized in that: It also includes a U-shaped control rod. The base has rails on both sides, and the two sides of the U-shaped control rod are respectively inserted into the rails. Both sides of the control rod are provided with hooks that cooperate to restrict the ends of the wheel axles. A compression spring is provided between the rear side wall of the base and the U-shaped control rod. When the U-shaped control rod is pushed towards the front end of the base until the ends of the wheel axles are disengaged from the hooks, the pulley descends along the guide hole and extends out of the receiving groove.

2. The liftable pulley device as described in claim 1, characterized in that: The base is fitted with a housing, the bottom wall of which has a through hole aligned with the receiving groove. A sliding groove is provided at the opening of the through hole, and a sliding cover for sealing the through hole is disposed in the sliding groove.

3. The liftable pulley device as described in claim 1, characterized in that: The base has two receiving slots, and the axle passes through the pulleys in the two receiving slots simultaneously.

4. The liftable pulley device as described in claim 3, characterized in that: The top wall of the guide hole between the receiving grooves is provided with a groove, and a reset component for causing the wheel axle to descend is provided in the groove.

5. The liftable pulley device as described in claim 4, characterized in that: The reset component is a compression spring or a cylindrical rubber.

6. The liftable pulley device as described in claim 1, characterized in that: A limiting part is provided in the middle of the U-shaped control rod, and the rear end of the compression spring is correspondingly abutted against the limiting part.

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