Tire nut capable of increasing number of threads without heightening nut and hub structure

Abstract

The utility model relates to a tire nut capable of increasing the number of threads without heightening the nut, which comprises a nut and a deformation gasket, a thin-wall ring with the thickness smaller than that of the nut is formed at one end of the nut, and the outer wall of the thin-wall ring is cylindrical; an inner hole of the deformation gasket is provided with a linear cylindrical hole section and an expanded hole section which are distributed from top to bottom, the linear cylindrical hole section is clamped on the outer wall of the thin-wall ring, the lower end of the thin-wall ring penetrates through the linear cylindrical hole section and extends into the expanded hole section, and inner threads are arranged on the inner wall of the nut and the inner wall of the thin-wall ring. The internal thread of the thin-wall ring extends into the deformation gasket, and when the nut is locked on the wheel rim through the bolt, the center of the deformation gasket is stressed and is downwards bent and deformed, so that the lower end face of the deformation gasket is tightly attached to the wheel rim. By the adoption of the internal riveting structure, the height of the tire nut does not need to be increased, the internal threads of the thin-wall ring stretch into the deformation gasket, the number of the threads of the tire nut is increased, locking pressure is distributed to more threads, pressure borne by each thread can be effectively reduced, and durability of the tire nut is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to a tire nut and wheel hub structure that increases the number of threads without increasing the height of the nut. Background Technology

[0002] Threaded connections are the main fastening method for automotive parts assembly, offering good connection reliability and disassembly capability. However, for tire nut parts that require repeated high-intensity disassembly, durability needs to be a key consideration.

[0003] Due to the influence of manufacturing processes and fitting clearances, the threads of the nut cannot be guaranteed to be completely perpendicular to the clamping contact surface. However, tire nuts are required to be tightly fitted to the rim end face after tightening to achieve uniform clamping pressure. Tire nut technology has evolved from external riveting to internal riveting. For example, a combined tire nut with publication number CN203594665U is an externally riveted tire nut, comprising a nut and a movable washer. The outer wall of the nut has a circular protruding ring, and the upper end of the movable washer has a rivet ring that can be riveted to the circular protruding ring, achieving external riveting between the two. The drawback of this nut structure is that, due to the external riveting, the rivet ring is exposed, making it susceptible to damage from external forces during use, leading to separation between the nut and the washer. Furthermore, the bottom of the washer is flat, meaning this nut structure cannot provide sufficient clamping force to the rim.

[0004] To overcome the shortcomings of externally riveted tire nuts, internally riveted tire nuts have been developed. For example, a reinforced tire nut with publication number CN204178763U includes a nut and a movable washer. A post ring is located at the bottom of the nut, which can be riveted to the inner hole of the washer, achieving internal riveting and overcoming the shortcomings of externally riveted tire nuts: "During use, they are easily damaged by external forces, causing the nut and washer to detach." However, the bottom of the washer in the reinforced tire nut of CN204178763U is flat, and the number of threads on the nut is insufficient, meaning that this nut structure cannot provide enough clamping force for the wheel.

[0005] Further developments have emerged, such as those attached to the instruction manual. Figure 1The tire nut with an internal riveting structure has a thin-walled ring machined into it. This ring passes through the inner hole of the washer and is flanged but not completely clamped, preventing the washer from detaching from the nut while allowing it to rotate and slightly wiggle, thus forming the tire nut assembly. During the machining of the thin-walled ring, the inner hole is also enlarged. The nut is threaded before riveting with the washer, but due to the enlarged inner hole, threads cannot be machined at the thin-walled ring location. This prevents damage to the threads during the flange riveting process, resulting in no threads at the flange riveting location. A common solution to increase the durability of tire nuts is to increase the number of threads, distributing the locking pressure across more threads and effectively reducing the pressure on each thread. However, since there are no threads at the flange riveting location, increasing the number of threads is usually achieved by increasing the nut's height. Increasing the tire nut's height requires a corresponding increase in the length of the matching wheel bolts, leading to increased steel consumption. Furthermore, in special applications, such as fixed-width disc wheels, increased wheel bolt length will prevent proper assembly. Utility Model Content

[0006] To address the aforementioned problems and increase the durability of tire nuts, this invention provides a tire nut and wheel hub structure that increases the number of threads without increasing the nut height.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A tire nut that increases the number of threads without increasing the nut height includes a nut 1 and a deformation washer 2. One axial end of the deformation washer 2 is movably riveted to the axial end of the nut, and the nut 1 can rotate relative to the deformation washer 2. An annular notch is formed on the outer wall of the nut 1 near the deformation washer 2, forming a thin-walled ring 11 with a thickness less than the thickness of the nut 1. The outer wall of the thin-walled ring 11 is cylindrical. One axial end of the deformation washer 2 can be engaged within the annular notch of the nut 1. The inner hole of the deformation washer 2 has a straight cylindrical hole section 21 and an enlarged diameter hole section 22 distributed from top to bottom. The hole of the enlarged diameter hole section 22... The diameter is larger than the diameter of the straight cylindrical hole section 21. An annular retaining platform is formed between the straight cylindrical hole section 21 and the enlarged diameter hole section 22. The straight cylindrical hole section 21 is stuck on the outer wall of the thin-walled ring 11. The lower end of the thin-walled ring 11 passes through the straight cylindrical hole section 21 and extends into the enlarged diameter hole section 22. The outwardly turned edge at the bottom of the thin-walled ring 11 forms an annular retaining edge that engages with the annular retaining platform. Internal threads are provided on the inner wall of the nut 1 and the inner wall of the thin-walled ring 11. The internal thread of the thin-walled ring 11 extends into the deformation washer 2. When the nut 1 is locked in the wheel by bolts, the center of the deformation washer 2 is subjected to force and deforms downward, so that the lower end face of the deformation washer 2 is tightly fitted with the wheel.

[0009] As a preferred embodiment, it is further defined that the bottom of the deformation washer 2 is provided with an upwardly protruding umbrella-shaped buckle 23. When the deformation washer 2 contacts the wheel, the inner part of the umbrella-shaped buckle 23 of the deformation washer 2 separates from the wheel. When the locking nut 1 is tightened, the deformation washer 2 deforms downward, and the entire umbrella-shaped buckle 23 is flattened so that the entire surface contacts the wheel.

[0010] As a preferred embodiment, the buckle angle of the umbrella-shaped buckle 23 is further defined as 1°-2°.

[0011] As a preferred embodiment, it is further defined that an upper conical locking surface is provided at the annular notch of the nut 1, and a lower conical locking surface is provided around the inner hole at the top of the deformation washer 2 to support and cooperate with the upper conical locking surface.

[0012] This invention also provides a wheel hub structure that increases the number of threads without increasing the height of the nut, including a nut, a deformation washer, a bolt, a rim, a hub, and a brake component. The brake component has a mounting plate, and the hub has a receiving plate that fits against the mounting plate after assembly. The mounting plate has a first mounting hole for the bolt to pass through, the receiving plate has a second mounting hole for the bolt to pass through, and the rim has a third mounting hole for the bolt to pass through. During assembly, the bolt passes through the first mounting hole, the second mounting hole, the third mounting hole, and the deformation washer in sequence, and then is threaded into the nut, making the rim and the receiving plate fit tightly. One axial end of the deformation washer is movably riveted to one axial end of the nut, and the nut can rotate relative to the deformation washer. An annular notch is formed on the lower outer wall of the nut, so that the lower end of the nut has a thickness less than A thin-walled ring with a thickness equal to that of a nut has a cylindrical outer wall. The upper end of a deformation washer can be engaged within the annular notch of the nut. The inner bore of the deformation washer has straight cylindrical sections and an enlarged diameter section distributed from top to bottom. The diameter of the enlarged diameter section is larger than the diameter of the straight cylindrical section. An annular retaining platform is formed between the straight cylindrical section and the enlarged diameter section. The straight cylindrical section is engaged on the outer wall of the thin-walled ring. The lower end of the thin-walled ring extends through the straight cylindrical section into the enlarged diameter section. The outwardly turned edge at the bottom of the thin-walled ring forms an annular retaining edge that engages with the annular retaining platform. Internal threads are provided on both the inner wall of the nut and the inner wall of the thin-walled ring. The internal threads of the thin-walled ring extend into the deformation washer. When the nut is tightened onto the wheel by bolts, the center of the deformation washer is subjected to downward concave deformation, causing the lower end face of the deformation washer to fit tightly against the wheel.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This technical solution does not require increasing the height of the tire nut. By utilizing the thin-walled ring of the nut, the number of threads in the tire nut is increased, and the locking pressure is distributed to more threads. This can effectively reduce the pressure on each thread and increase the durability of the tire nut.

[0015] 2. To achieve internal threads in the thin-walled ring and a straight section in the inner hole of the deformation washer, the thin-walled ring of the nut is kept in place during the flanging and riveting process to prevent it from being stretched. The flanging and riveting process will force deformation on the end face of the thin-walled ring of the nut. The nut thread is machined after riveting without damaging the internal thread.

[0016] 3. The nut contacts the deformation washer near the center. After the tire nut is tightened, the center of the washer is subjected to force and deforms downwards. The end face of the deformation washer is reversed in an umbrella shape with a reversal angle of 1°-2°, ensuring that the deformation washer contacts the entire surface of the rim after the tire nut is tightened. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the existing internal riveting thin-walled ring tire nut structure;

[0018] Figure 2 This is a perspective view of the tire nut of this utility model;

[0019] Figure 3 This is a cross-sectional view of the tire nut of this utility model;

[0020] Figure 4 This is a cross-sectional view of the deformation washer of the tire nut of this utility model;

[0021] Figure 5 yes Figure 4 A 5:1 enlarged view at point X;

[0022] Figure 6 This is a schematic diagram of the structure of the tire nut of this utility model applied to the axle of a drum-type wheel hub;

[0023] Figure 7 This is a schematic diagram of the tire nut of this utility model applied to the axle of a disc wheel hub. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0025] As attached Figure 2 To be continued Figure 5As shown, this utility model discloses a tire nut that increases the number of threads without increasing the nut height. It includes a nut 1 and a deformation washer 2. One axial end of the deformation washer 2 is movably riveted to the axial end of the nut, and the nut 1 can rotate relative to the deformation washer 2. An annular notch is formed on the outer wall of the nut 1 near the deformation washer 2, forming a thin-walled ring 11 with a thickness less than the nut 1's thickness. The outer wall of the thin-walled ring 11 is cylindrical. One axial end of the deformation washer 2 can be engaged within the annular notch of the nut 1. The inner hole of the deformation washer 2 has a straight cylindrical hole section 21 and an enlarged diameter hole section 22 distributed from top to bottom. The diameter of section 22 is larger than that of the straight cylindrical section 21. An annular retaining platform is formed between the straight cylindrical section 21 and the enlarged diameter section 22. The straight cylindrical section 21 is held on the outer wall of the thin-walled ring 11. The lower end of the thin-walled ring 11 passes through the straight cylindrical section 21 and extends into the enlarged diameter section 22. The outwardly turned edge at the bottom of the thin-walled ring 11 forms an annular retaining edge that engages with the annular retaining platform. Internal threads are provided on the inner wall of the nut 1 and the inner wall of the thin-walled ring 11. The internal thread of the thin-walled ring 11 extends into the deformation washer 2. When the nut 1 is locked in the wheel by bolts, the center of the deformation washer 2 is subjected to force and deforms downward, so that the lower end face of the deformation washer 2 is tightly fitted with the wheel.

[0026] By adopting the above internal riveting structure, it is not necessary to increase the height of the tire nut. The inner wall of the thin-walled ring 11 of the nut 1 is utilized. The internal thread of the thin-walled ring 11 extends into the deformation washer 2, which increases the number of threads of the tire nut and distributes the locking pressure to more threads. This can effectively reduce the pressure on each thread and increase the durability of the tire nut.

[0027] The inner hole of the deformation washer has a straight section, namely the straight cylindrical hole section 21. The straight cylindrical hole section 21 is stuck on the outer wall of the thin-walled ring 11, which keeps the thin-walled ring from being stretched during the flanging and riveting process. The flanging and riveting process will force the end face of the thin-walled ring to deform. After riveting, the nut thread is machined without damaging the internal thread.

[0028] See Figure 3-5 The deformation washer 2 has an upwardly protruding umbrella-shaped buckle 23 at its bottom. When the deformation washer 2 contacts the rim, the inner part of the umbrella-shaped buckle 23 separates from the rim. When the nut 1 is tightened, the deformation washer 2 deforms downward, and the entire umbrella-shaped buckle 23 is flattened, making its entire surface contact the rim. Since the nut contacts the deformation washer near its center, after the tire nut is tightened, the center of the washer is subjected to downward force and deforms concavely, flattening the umbrella-shaped buckle at the end face of the deformation washer, ensuring that the deformation washer contacts the entire surface of the rim after the tire nut is tightened. The buckle angle of the umbrella-shaped buckle 23 is 1°-2°.

[0029] See appendix Figure 3An upper conical retaining surface is provided at the annular notch of the nut 1, and a lower conical retaining surface is provided around the inner hole at the top of the deformation washer 2 to support and cooperate with the upper conical retaining surface. This facilitates the axial connection between the nut 1 and the deformation washer 2.

[0030] See Figure 6-7 This utility model also discloses a hub structure that increases the number of threads without increasing the height of the nut, including a nut 1, a deformation washer 2, a bolt 3, a rim (not shown), a hub 4, and a brake component 5. The brake component 5 is provided with a mounting plate 51. The hub 4 has a receiving plate 41 that fits against the mounting plate 51 after assembly. The mounting plate 51 is provided with a first mounting hole for the bolt 3 to pass through. The receiving plate 41 is provided with a second mounting hole for the bolt 3 to pass through. The rim is provided with a third mounting hole for the bolt 3 to pass through. During assembly, the bolt 3 passes through the first mounting hole, the second mounting hole, the third mounting hole, and the deformation washer 2 in sequence and is threadedly connected to the nut 1, so that the rim and the receiving plate 41 are tightly fitted. One axial end of the deformation washer 2 is movably riveted to one axial end of the nut, and the nut 1 can rotate relative to the deformation washer 2. An annular notch is provided on the lower outer wall of the nut 1, so that the lower end of the nut 1 has a thickness less than that of the nut. A thin-walled ring 11 with a thickness of 1 mm has a cylindrical outer wall. The upper end of the deformation washer 2 can be engaged in the annular notch of the nut 1. The inner hole of the deformation washer 2 has a straight cylindrical hole section 21 and an enlarged diameter hole section 22 distributed from top to bottom. The diameter of the enlarged diameter hole section 22 is larger than the diameter of the straight cylindrical hole section 21. An annular retaining platform is formed between the straight cylindrical hole section 21 and the enlarged diameter hole section 22. The straight cylindrical hole section 21 is engaged on the outer wall of the thin-walled ring 11. The lower end of the thin-walled ring 11 passes through the straight cylindrical hole section 21 and extends into the enlarged diameter hole section 22. The outwardly turned edge at the bottom of the thin-walled ring 11 forms an annular retaining edge that engages with the annular retaining platform. Internal threads are provided on both the inner wall of the nut 1 and the inner wall of the thin-walled ring 11. The internal thread of the thin-walled ring 11 extends into the deformation washer 2. When the nut 1 is tightened onto the wheel rim by bolts, the center of the deformation washer 2 is subjected to downward force and deforms, causing the lower end face of the deformation washer 2 to fit tightly against the wheel rim. Using the above internal riveting structure, it is not necessary to increase the height of the tire nut. By utilizing the inner wall of the thin-walled ring 11 of the nut 1, and having the internal thread of the thin-walled ring 11 extend into the deformation washer 2, the number of threads on the tire nut is increased, distributing the locking pressure across more threads. This effectively reduces the pressure on each thread and increases the durability of the tire nut. The inner hole of the deformation washer has a straight section, namely the straight cylindrical hole section 21. The straight cylindrical hole section 21 is stuck on the outer wall of the thin-walled ring 11, which keeps the thin-walled ring from being stretched during the flanging and riveting process. The flanging and riveting process will force the end face of the thin-walled ring to deform. After riveting, the nut thread is machined without damaging the internal thread.

[0031] The deformation washer 2 has an upwardly protruding umbrella-shaped buckle 23 at its bottom. When the deformation washer 2 contacts the wheel hub, the inner part of the umbrella-shaped buckle 23 separates from the wheel hub. When the locking nut 1 is tightened, the deformation washer 2 deforms downward, and the entire umbrella-shaped buckle 23 is flattened so that the entire surface contacts the wheel hub. The buckle angle of the umbrella-shaped buckle 23 is 1°-2°.

[0032] An upper conical locking surface is provided at the annular notch of the nut 1, and a lower conical locking surface is provided around the inner hole at the top of the deformation washer 2 to support and cooperate with the upper conical locking surface.

[0033] Appendix Figure 6 The brake component 5 mentioned above is a brake drum, with attachments. Figure 7 The braking component 5 mentioned above is a brake disc.

[0034] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any modifications or variations made by those skilled in the art, without departing from the scope of the utility model's technical solution, using the disclosed technical content, are equivalent embodiments of this utility model. Therefore, all equivalent changes made based on the concept of this utility model without departing from its technical solution should be covered within the protection scope of this utility model.

Claims

1. A tire nut that increases the number of threads without increasing the nut height, comprising a nut (1) and a deformation washer (2), wherein one axial end of the deformation washer (2) is movably riveted to the axial end of the nut, and the nut (1) can rotate relative to the deformation washer (2), characterized in that: The nut (1) is provided with an annular gap on the outer wall of the end close to the deformation washer (2), so that the end of the nut (1) forms a thin-walled ring (11) with a thickness smaller than that of the nut (1), and the outer wall of the thin-walled ring (11) is cylindrical; the axial end of the deformation washer (2) can be clamped in the annular gap of the nut (1), the inner hole of the deformation washer (2) has a straight cylindrical hole section (21) and a diameter expansion hole section (22) distributed from top to bottom, the hole diameter of the diameter expansion hole section (22) is larger than that of the straight cylindrical hole section (21), and an annular clamping table is formed between the straight cylindrical hole section (21) and the diameter expansion hole section (22); the straight cylindrical hole section (21) is clamped on the outer wall of the thin-walled ring (11), the lower end of the thin-walled ring (11) extends into the diameter expansion hole section (22) through the straight cylindrical hole section (21), and the outward flanging at the bottom of the thin-walled ring (11) forms an annular clamping edge clamped on the annular clamping table; the inner wall of the nut (1) and the inner wall of the thin-walled ring (11) are both provided with internal threads, the internal threads of the thin-walled ring (11) extend into the deformation washer (2), and the nut (1) is locked by a bolt, so that the deformation washer (2) is deformed downward and curved under the force in the center of the wheel, so that the lower end surface of the deformation washer (2) is closely attached to the wheel.

2. A tire nut for increasing the number of threads without increasing the height of the nut as claimed in claim 1, wherein An umbrella-shaped reverse buckle (23) is arranged on the bottom of the deformation washer (2) and protrudes upward; when the deformation washer (2) contacts the wheel, the inner side of the umbrella-shaped reverse buckle (23) of the deformation washer (2) is separated from the wheel; when the nut (1) is locked, the deformation washer (2) is deformed downward, and the entire umbrella-shaped reverse buckle (23) is flattened so that the entire surface contacts the wheel.

3. A tire nut for increasing the number of threads without increasing the height of the nut as claimed in claim 1, wherein The reverse buckle angle of the umbrella-shaped reverse buckle (23) is 1°-2°.

4. The tire nut of claim 1, wherein, An upper conical clamping surface is arranged at the annular gap of the nut (1), and a lower conical clamping surface is arranged at the top end of the deformation washer (2) and supports the upper conical clamping surface.

5. A hub structure for increasing the number of threads without increasing the height of the nut, comprising a nut (1), a deformation washer (2), a bolt (3), a rim, a hub (4), a brake member (5), wherein the brake member (5) is provided with a mounting disc (51), the hub (4) is provided with a receiving disc (41) which is fitted to the mounting disc (51), the mounting disc (51) is provided with a first assembly hole for the bolt (3) to pass through, the receiving disc (41) is provided with a second assembly hole for the bolt (3) to pass through, the rim is provided with a third assembly hole for the bolt (3) to pass through, and when assembled, the bolt (3) passes through the first assembly hole, the second assembly hole, the third assembly hole, the deformation washer (2) in sequence and is threadedly connected with the nut (1) so that the rim is tightly attached to the receiving disc (41), one axial end of the deformation washer (2) and one axial end of the nut are movably riveted together, and the nut (1) can rotate relative to the deformation washer (2), characterized in that: The nut (1) is provided with an annular gap on the outer wall of the end close to the deformation washer (2), so that the end of the nut (1) forms a thin-walled ring (11) with a thickness smaller than that of the nut (1), and the outer wall of the thin-walled ring (11) is cylindrical; the axial end of the deformation washer (2) can be clamped in the annular gap of the nut (1), the inner hole of the deformation washer (2) has a straight cylindrical hole section (21) and a diameter expansion hole section (22) distributed from top to bottom, the hole diameter of the diameter expansion hole section (22) is larger than that of the straight cylindrical hole section (21), and an annular clamping table is formed between the straight cylindrical hole section (21) and the diameter expansion hole section (22); the straight cylindrical hole section (21) is clamped on the outer wall of the thin-walled ring (11), the lower end of the thin-walled ring (11) extends into the diameter expansion hole section (22) through the straight cylindrical hole section (21), and the outward flanging at the bottom of the thin-walled ring (11) forms an annular clamping edge clamped on the annular clamping table; the inner wall of the nut (1) and the inner wall of the thin-walled ring (11) are both provided with internal threads, the internal threads of the thin-walled ring (11) extend into the deformation washer (2), and the nut (1) is locked by a bolt, so that the deformation washer (2) is deformed downward and curved under the force in the center of the wheel, so that the lower end surface of the deformation washer (2) is closely attached to the wheel.

6. The wheel structure according to claim 5, wherein The bottom of the deformation washer (2) is provided with an umbrella-shaped reverse buckle (23) protruding upward. When the deformation washer (2) is in contact with the wheel hub, the inner side of the umbrella-shaped reverse buckle (23) of the deformation washer (2) is separated from the wheel hub. When the lock nut (1) is locked, the deformation washer (2) is deformed downward, and the entire umbrella-shaped reverse buckle (23) is flattened so that the entire surface is in contact with the wheel hub.

7. The hub structure according to claim 5, wherein The reverse buckle angle of the umbrella-shaped reverse buckle (23) is 1°-2°.

8. The hub structure according to claim 5, wherein An upper conical clamping surface is arranged at the annular gap of the nut (1), and a lower conical clamping surface is arranged at the top end of the deformation washer (2) around the inner hole and cooperates with the upper conical clamping surface for support.

9. The hub structure according to claim 5, wherein The brake member (5) is a brake drum or a brake disc.

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