A wheel hub

Abstract

The application relates to the technical field of wheel hubs, in particular to a vehicle wheel hub, which comprises a hub component group, the outer part of the hub component group is provided with a spoke component group, a quick-connection component group and an adjustable rim component group from near to far. Through the design of the quick-connection component group and the adjustable rim component group, the damaged spoke component group can be quickly replaced without disassembling the wheel hub, and through the cooperation of the outer moving plate, the clamping block and the inserting rod, the dismounting and mounting efficiency of the rim component is further improved.

Description

Technical Field

[0001] This invention relates to the field of wheel hub technology, specifically to a wheel hub. Background Technology

[0002] As a core mobility tool for people with mobility impairments, the safety and reliability of wheelchairs directly affect the user's quality of life. Traditional wheelchair wheels typically use a hub structure similar to that of bicycles, consisting of a rim, hub, and spokes connecting the two. However, existing technology has the following significant drawbacks in practical applications:

[0003] Traditional spokes are fixed to the hub and rim using J-bends and threaded spoke caps. This spoke structure has low strength and is easily bent and damaged when it is bumped, affecting its support for the rim. While using thicker spokes can improve structural strength, it is more inconvenient to install. One end of the spoke is connected to the hub through a J-bend, and the other end needs to be bent to a certain extent during installation so that one end of the spoke can be connected to the spoke cap on the rim. Thicker spokes are not easy to bend, making installation difficult.

[0004] Meanwhile, replacing a single spoke requires disassembling the tire, releasing the valve core, and removing the rubber tire. Wheelchair users (especially those with weak upper limb strength) or caregivers may find it difficult to complete the replacement independently, and frequent tire disassembly can lead to inner tube wear or reduced air tightness. Summary of the Invention

[0005] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a wheel hub to solve the problem mentioned in the background art that the connection between the wheel rim and the spokes in the current conventional wheelchair hubs makes it inconvenient to disassemble and install the spokes without disassembling the entire hub.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a wheel hub, comprising a hub assembly, wherein the hub assembly includes a hub component mounted on a wheelchair frame via an axle, and a spoke nut component mounted on the hub component via a hexagonal groove; wherein: the outer surface of the hub assembly, from near to far, comprises a spoke assembly, a quick-connect assembly, and an adjustable rim assembly; the adjustable rim assembly is used to mount a wheel tire, and the spoke assembly is positioned between the quick-connect assembly and the hub assembly to support the overall hub; the quick-connect assembly... The wheel assembly is detachably connected to the adjustable rim assembly. The adjustable rim assembly is used for angle adjustment of the quick-connect assembly and the spoke assembly. By adjusting the angles of the quick-connect assembly and the spoke assembly, the spoke assembly can be installed and removed while the overall hub is connected to the wheelchair frame. The spoke assembly includes a spoke body and two sets of pressure grooves. The spoke body has a first end thread and a second end thread at both ends. The two sets of pressure grooves are respectively opened on both sides of the spoke body. The pressure grooves are used to clamp the spoke body for rotation, thereby adjusting the tension of the spoke body.

[0007] Preferably, the spoke body is connected to the spoke nut via end thread two, and the spoke body is connected to the nut assembly via end thread one, wherein the thread directions of end thread one and end thread two are opposite.

[0008] Preferably, the quick-connect component assembly includes a nut kit, the end of which is provided with an anti-loosening protrusion, the outside of which is provided with a hexagonal platform, the hexagonal platform slidingly contacting a Y-shaped frame through a hexagonal through groove, the top of which is fixedly connected with an insert rod, the anti-loosening protrusion contacting the Y-shaped frame through a groove, and the Y-shaped frame having a U-groove at the position corresponding to the nut kit.

[0009] Preferably, the adjustable wheel rim assembly includes a sleeve, the sleeve having a locking block, a connecting strip, and an inner spring inside. The side of the sleeve slides against an outer moving plate via a groove. The top of the sleeve is connected to a fixed top support via a rotating shaft. The fixed top support slides against a limit ring via a groove. A mounting ring is fixedly connected to the top of the fixed top support. An outer ring bolt is located inside the mounting ring. A wheel rim is located outside the mounting ring. The mounting ring and the wheel rim are connected by the outer ring bolt. A pull handle is located on the side of the fixed top support, and an inner rod is located inside the fixed top support.

[0010] Preferably, the limiting moving ring has a limiting groove corresponding to the inner rod, the inner ring of the limiting moving ring has a disengagement groove, and the inside of the limiting moving ring is fixedly connected to a handle for moving the limiting moving ring.

[0011] Preferably: the insert rod contacts the sleeve through a slot, the locking block contacts the insert rod through a slot, the locking block slides inside the sleeve through a sliding groove, the inner spring is connected between the sleeve and the connecting strip, the connecting strip slides in contact with the sleeve through a sliding groove, and one end of the connecting strip is fixedly connected to the outer movable plate.

[0012] Preferably, the inner rod is in sliding contact with the fixed top support through a hole, and a spring is sleeved on the outside of the inner rod, with the spring disposed in the fixed top support through a groove, and the spring connecting the inner rod and the fixed top support.

[0013] Preferably, the top of the sleeve component has a groove corresponding to the limiting moving ring, and the sleeve component slides in contact with the limiting moving ring through the groove.

[0014] Preferably, the outer movable plate has anti-slip texture on its surface. When the outer movable plate slides on the sleeve, it can drive the connecting strip and the locking block to move within the sleeve. When the connecting strip moves, it causes the inner spring to store force and contract.

[0015] Preferably, when the handle is pulled and moves toward the fixed top support, the inner rod will disengage from the inserted limiting groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The quick-connect assembly and adjustable rim assembly design allows for easy replacement of damaged spoke assembly without removing the entire wheelchair from the frame. This design significantly reduces maintenance time and workload, improves the wheelchair's usability and maintenance efficiency, and allows for angle adjustment of the quick-connect assembly and spoke assembly by controlling the adjustable rim assembly, making spoke removal and installation more flexible and further enhancing maintenance convenience.

[0018] 2. Through the cooperation of the outer moving plate, the locking block and the insert rod, the wheel rim component can be quickly removed and installed from the wheel hub. This design not only facilitates the replacement and maintenance of the wheel rim, but also improves the versatility and flexibility of the product.

[0019] 3. The groove design provides a reliable clamping position for pliers or other tools. This structure allows the tool to firmly clamp the spokes, facilitating rotational adjustment of the spokes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall explosion structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the spoke component assembly of the present invention;

[0022] Figure 3 This is a schematic diagram of the overall front structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the overall rear structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the quick-connect component assembly of the present invention. Figure 1 ;

[0025] Figure 6 This is a schematic diagram of the quick-connect component assembly of the present invention. Figure 2 ;

[0026] Figure 7 This is a structural schematic diagram of the quick-connect component assembly and the adjustable wheel rim component assembly of the present invention;

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point A;

[0028] Figure 9 This is a cross-sectional structural schematic diagram of the quick-connect component assembly and the adjustable wheel rim component assembly of the present invention;

[0029] Figure 10 This is a schematic cross-sectional view of the present invention;

[0030] Figure 11 For the present invention Figure 10 Schematic diagram of the structure at point B;

[0031] Figure 12 This is a cross-sectional view of the adjustable wheel rim assembly of the present invention.

[0032] Figure 13 This is a schematic diagram of the structure of the limiting and moving ring portion of the present invention;

[0033] Figure 14 For the present invention Figure 13 Schematic diagram of the structure at point C;

[0034] Figure 15 This is a schematic diagram of the quick-connect component assembly and adjustable wheel rim component assembly before partial angle adjustment according to the present invention;

[0035] Figure 16 This is a schematic diagram of the structure of the quick-connect component assembly and the adjustable wheel rim component assembly in the present invention for partial angle adjustment;

[0036] Figure 17 This is a schematic diagram of the quick-connect component assembly and adjustable wheel rim component assembly after partial angle adjustment according to the present invention.

[0037] In the diagram: 100, Hub assembly; 11, Hub component; 12, Spoke nut component; 200, Spoke assembly; 21, Spoke body; 22, Pressure groove; 23, End thread one; 24, End thread two; 300, Quick-connect assembly; 31, Nut kit; 311, Hexagonal platform; 312, Anti-detachment ring; 32, Y-shaped frame; 33, U-groove; 34, Insert rod component; 400, Adjustable rim assembly; 41, Sleeve platform component; 42, Locking block component; 43, Connecting strip; 44, Inner spring component; 45, Outer moving plate; 46, Fixed top support; 47, Limiting moving ring; 471, Limiting groove; 472, Disengagement groove body; 473, Handle; 48, Bracket ring; 49, Rim component; 410, Outer ring bolt; 411, Pull handle; 412, Inner rod component. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] One embodiment of the present invention provides a wheel hub, including a hub component assembly 100, the hub component assembly 100 including a hub component 11 mounted on a wheelchair frame via a wheel axle, the hub component 11 having a spoke nut component 12 mounted via a hexagonal groove, wherein: the outer side of the hub component assembly 100 is provided with a spoke component assembly 200, a quick-connect component assembly 300 and an adjustable rim component assembly 400 from near to far;

[0040] The adjustable rim assembly 400 is used to mount the wheel tire, and the spoke assembly 200 is positioned between the quick-connect assembly 300 and the hub assembly 100 to support the overall wheel hub.

[0041] The quick-connect assembly 300 and the adjustable rim assembly 400 are detachably connected. The adjustable rim assembly 400 is used for angle adjustment of the quick-connect assembly 300 and the spoke assembly 200. By adjusting the angle of the quick-connect assembly 300 and the spoke assembly 200, the spoke assembly 200 can be disassembled and assembled while the entire hub is connected to the wheelchair frame. In actual use, external bumps and knocks can easily cause damage to some spokes in the multiple spoke assembly 200s. When replacing them, the existing technology requires the entire hub to be removed from the wheelchair. Specifically, the disassembly involves disconnecting the hub 11 from the axle. Only after the hub is removed can the damaged spoke assembly 200 be replaced. This operation results in low efficiency in replacing the spoke assembly 200 and is inconvenient for wheelchair users to replace themselves. However, this integrated hub design allows for the replacement of the damaged spoke assembly 200 without disconnecting the hub 11 from the axle when it is damaged.

[0042] The spoke assembly 200 includes a spoke body 21 and two sets of pressure grooves 22. The spoke body 21 has an end thread 23 and an end thread 24 at both ends. The two sets of pressure grooves 22 are respectively opened on both sides of the spoke body 21. The pressure grooves 22 are used to clamp the spoke body 21 for rotation, thereby completing the tension adjustment of the spoke body 21. The spoke assembly 200 designed in this structure has better structural strength due to its thicker structure. Moreover, the spoke body 21 in this spoke assembly 200 is not limited to a specific material and can be made of aluminum, iron, or carbon fiber. Although the structural strength is enhanced, the problems mentioned in the background art will not occur. This is because in this structural design, after the adjustable rim assembly 400 adjusts the angle of the spoke assembly 200 and the quick-connect assembly 300, installation can be performed without bending the spoke assembly 200.

[0043] The spoke body 21 is connected to the spoke nut 12 by end thread 24, and the spoke body 21 is connected to the nut assembly 31 by end thread 23. The thread directions of end thread 23 and end thread 24 are opposite.

[0044] The quick-connect component assembly 300 includes a nut kit 31. The end of the nut kit 31 is provided with an anti-loosening protrusion 312. The outside of the nut kit 31 is provided with a hexagonal platform 311. The hexagonal platform 311 slides in contact with a Y-shaped frame 32 through a hexagonal through groove. The top of the Y-shaped frame 32 is fixedly connected with an insert rod 34. The anti-loosening protrusion 312 contacts the Y-shaped frame 32 through a groove. The Y-shaped frame 32 has a U-groove 33 at the position corresponding to the nut kit 31.

[0045] The adjustable wheel rim assembly 400 includes a mounting bracket 41. The mounting bracket 41 has a locking block 42, a connecting strip 43, and an inner spring 44 inside. The side of the mounting bracket 41 slides in contact with an outer moving plate 45 via a sliding groove. The top of the mounting bracket 41 is connected to a fixed top support 46 via a rotating shaft. The fixed top support 46 slides in contact with a limit moving ring 47 via a sliding groove. The top of the fixed top support 46 is fixedly connected to a mounting bracket ring 48. The mounting bracket ring 48 has an outer ring bolt 410 inside. The outside of the mounting bracket ring 48 is a wheel rim 49. The mounting bracket ring 48 and the wheel rim 49 are connected by the outer ring bolt 410. The side of the fixed top support 46 has a pull handle 411. The inside of the fixed top support 46 has an inner rod 412.

[0046] The limiting moving ring 47 has a limiting groove 471 corresponding to the inner rod 412, and the inner ring of the limiting moving ring 47 has a disengagement groove 472. The inside of the limiting moving ring 47 is fixedly connected to a handle 473 for moving the limiting moving ring 47.

[0047] The insert rod 34 contacts the sleeve 41 through the slot, the locking block 42 contacts the insert rod 34 through the slot, the locking block 42 slides inside the sleeve 41 through the sliding groove, the inner spring 44 is connected between the sleeve 41 and the connecting strip 43, the connecting strip 43 slides in contact with the sleeve 41 through the sliding groove, and one end of the connecting strip 43 is fixedly connected to the outer moving plate 45.

[0048] The inner rod 412 slides in contact with the fixed top support 46 through the hole. A spring is sleeved on the outside of the inner rod 412, and the spring is set in the fixed top support 46 through the groove. The spring connects the inner rod 412 and the fixed top support 46.

[0049] The top of the sleeve 41 is provided with a groove corresponding to the limiting moving ring 47, and the sleeve 41 slides in contact with the limiting moving ring 47 through the groove.

[0050] The outer movable plate 45 has anti-slip texture on its surface. When the outer movable plate 45 slides on the sleeve 41, it can drive the connecting strip 43 and the locking block 42 to move within the sleeve 41. When the connecting strip 43 moves, it will cause the inner spring 44 to store force and contract.

[0051] When the handle 411 is pulled and moves toward the fixed top support 46, the inner rod 412 will disengage from the inserted limiting groove 471.

[0052] Working principle:

[0053] refer to Figure 15As shown, when the spoke body 21 in the spoke assembly 200 is damaged and needs to be replaced, use pliers, vise pliers or other tools that can hold the spoke body 21 to hold the pressure groove 22 of the spoke body 21, and then rotate the spoke body 21. The rotation of the spoke body 21 can adjust the distance between the nut kit 31 and the spoke nut 12 connected at both ends of the spoke body 21, so that the distance between the nut kit 31 and the spoke nut 12 increases, so that the hexagonal platform 311 can slide in the Y-shaped frame 32, so that the anti-detachment cam 312, the hexagonal platform 311 and the nut kit 31 move upward. When the anti-detachment cam 312 is about to approach the limit moving ring 47, the end thread 24 of one end of the spoke body 21 will disengage from the spoke nut 12. At this time, the hexagonal platform 311 and the anti-detachment cam 312 will be located in the U-groove 33.

[0054] refer to Figure 16 and Figure 17 As shown, by pulling the handle 411 away from the fixed top support 46, the handle 411 drives the inner rod 412 out of the limiting groove 471. The spring on the inner rod 412 extends due to its stored force. At the same time, by gripping the handle 473, the limiting moving ring 47 moves, so that the disengagement groove 472 moves exactly to the position of the sleeve 41. At this time, due to the presence of the disengagement groove 472, the limiting moving ring 47 only contacts the fixed top support 46 through the sliding groove, and does not contact the sleeve 41. Then, by releasing the pull of the handle 411, the quick-connect component group 300 and the spoke component group 200 can be angled. Specifically, the top of the sleeve 41 is connected to the fixed top support 46 through the pivot. Figure 17 As shown, at this point, by continuing to rotate the spoke body 21, the spoke assembly 200 can be removed from the quick-connect assembly 300;

[0055] When installing a new spoke assembly 200, the spoke body 21 is directly connected to the nut kit 31 via the end thread 23. Then, the quick-connect assembly 300 and the spoke assembly 200 are adjusted to their initial installation positions via the pivot on the sleeve 41. By resetting the limiting ring 47, the limiting ring 47 will lock the angle of the sleeve 41 by contacting the sleeve 41 and the fixed top support 46 through the sliding groove. After that, the spoke body 21 is reversed so that the end thread 23 can be connected to the spoke nut 12 to complete the replacement and installation of the spoke assembly 200.

[0056] When wheel rim component 49 is damaged, it can be replaced without disassembling the entire wheel hub.

[0057] During replacement, push the outer moving plate 45 on the sleeve 41 to both sides. Pushing the outer moving plate 45 will drive the locking block 42 through the connecting strip 43. The locking block 42 will disengage from the slot of the insert rod 34, and the inner spring 44 will retract. Then the insert rod 34 can disengage from the slot of the sleeve 41. In this way, the quick-connect component group 300 and the adjustable rim component group 400 will be disconnected. After disconnecting the quick-connect component group 300 on each spoke component group 200 from the adjustable rim component group 400, the adjustable rim component group 400 can be directly removed from the overall hub. After disassembly, the wheel rim component 49 can be replaced or maintained, or the rubber tire on the wheel rim component 49 can be replaced or maintained. After replacement, place it in the installation position, move the quick-connect component assembly 300 to insert the insertion rod 34 into the sleeve component 41. During the insertion process, the insertion rod 34 will push open the locking block 42 to retract it. When fully inserted, the locking block 42 will be pushed by the inner spring component 44 and contact the locking groove of the insertion rod 34, thereby completing the connection between the quick-connect component assembly 300 and the adjustable wheel rim component assembly 400, and completing the installation of the adjustable wheel rim component assembly 400.

[0058] In this technology, the spoke assembly 200 has two orientations. During installation, it is only necessary to flip the quick-connect assembly 300 to meet the adjustment and adaptation of the spoke assembly 200 with different installation orientations. Because the connection between the quick-connect assembly 300 and the adjustable rim assembly 400 can still be connected when the quick-connect assembly 300 is flipped, it is applicable to the two sets of spoke assembly 200 with different installation orientations.

[0059] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A wheel hub comprising a hub assembly (100), the hub assembly (100) including a hub component (11) mounted on a wheelchair frame via an axle, the hub component (11) having a spoke nut component (12) mounted via a hexagonal recess, characterized in that: The hub assembly (100) is provided with a spoke assembly (200), a quick-connect assembly (300) and an adjustable rim assembly (400) from near to far on the outside. The adjustable rim assembly (400) is used to mount the wheel tire, and the spoke assembly (200) is positioned between the quick-connect assembly (300) and the hub assembly (100) to support the overall wheel hub. The quick-connect assembly (300) is detachably connected to the adjustable rim assembly (400), and the adjustable rim assembly (400) is used for angle adjustment of the quick-connect assembly (300) and the spoke assembly (200); the spoke assembly (200) can be disassembled and assembled while the overall hub is connected to the wheelchair frame by adjusting the angle of the quick-connect assembly (300) and the spoke assembly (200). The spoke assembly (200) includes a spoke body (21) and two sets of pressure grooves (22). The spoke body (21) has a first end thread (23) and a second end thread (24) at both ends. The two sets of pressure grooves (22) are respectively opened on both sides of the spoke body (21). The pressure grooves (22) are used to clamp the spoke body (21) for rotation, thereby completing the tension adjustment of the spoke body (21). The adjustable wheel rim assembly (400) includes a sleeve (41), which has a locking block (42), a connecting strip (43), and an inner spring (44) inside. The side of the sleeve (41) slides against an outer moving plate (45) via a groove. The top of the sleeve (41) is connected to a fixed top support (46) via a rotating shaft. The fixed top support (46) slides against a limit moving ring (47) via a groove. A mounting ring (48) is fixedly connected to the top of the fixed top support (46). An outer ring bolt (410) is provided inside the mounting ring (48). A wheel rim (49) is provided outside the mounting ring (48). The mounting ring (48) and the wheel rim (49) are connected by the outer ring bolt (410). A pull handle (411) is provided on the side of the fixed top support (46). An inner rod (412) is provided inside the fixed top support (46).

2. The wheel hub according to claim 1, characterized in that: The spoke body (21) is threaded to the spoke nut (12) via end thread two (24), and the spoke body (21) is threaded to the nut assembly (31) via end thread one (23). The thread directions of end thread one (23) and end thread two (24) are opposite.

3. The wheel hub according to claim 1, characterized in that: The quick-connect component assembly (300) includes a nut kit (31), the end of which is provided with an anti-loosening protrusion (312), and the outside of the nut kit (31) is provided with a hexagonal platform (311). The hexagonal platform (311) slides in contact with a Y-shaped frame (32) through a hexagonal through groove. The top of the Y-shaped frame (32) is fixedly connected with a plug rod (34). The anti-loosening protrusion (312) contacts the Y-shaped frame (32) through a groove. The Y-shaped frame (32) has a U-groove (33) at the position corresponding to the nut kit (31).

4. A wheel hub according to claim 1, characterized in that: The limiting moving ring (47) has a limiting groove (471) corresponding to the inner rod (412), and the inner ring of the limiting moving ring (47) has a disengagement groove (472). The inside of the limiting moving ring (47) is fixedly connected to a handle (473) for moving the limiting moving ring (47).

5. A wheel hub according to claim 3, characterized in that: The insert rod (34) contacts the sleeve (41) through a slot, the locking block (42) contacts the insert rod (34) through a slot, the locking block (42) slides inside the sleeve (41) through a sliding groove, the inner spring (44) is connected between the sleeve (41) and the connecting strip (43), the connecting strip (43) slides in contact with the sleeve (41) through a sliding groove, and one end of the connecting strip (43) is fixedly connected to the outer moving plate (45).

6. A wheel hub according to claim 5, characterized in that: The inner rod (412) slides in contact with the fixed top support (46) through a hole. A spring is sleeved on the outside of the inner rod (412), and the spring is set in the fixed top support (46) through a groove. The spring is connected between the inner rod (412) and the fixed top support (46).

7. A wheel hub according to claim 6, characterized in that: The top of the sleeve (41) is provided with a sliding groove corresponding to the limiting moving ring (47), and the sleeve (41) slides in contact with the limiting moving ring (47) through the sliding groove.

8. A wheel hub according to claim 7, characterized in that: The outer movable plate (45) has anti-slip texture on its surface. When the outer movable plate (45) slides on the sleeve (41), it drives the connecting strip (43) and the locking block (42) to move inside the sleeve (41). When the connecting strip (43) moves, it causes the inner spring (44) to store force and contract.

9. A wheel hub according to claim 1, characterized in that: When the handle (411) is pulled toward the fixed top support (46), the inner rod (412) will disengage from the inserted limiting groove (471).

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