Nut shield capable of early warning of looseness of wheel nut, wheel and vehicle

Abstract

The utility model belongs to the technical field of vehicle auxiliary equipment, and discloses a nut shield capable of early warning wheel nut looseness, a wheel and a vehicle, the nut shield capable of early warning wheel nut looseness comprises a connecting beam and at least two shield structures, each shield structure is sleeved on the corresponding wheel nut and can rotate along with the wheel nut, and the connecting beam is connected with the at least two shield structures. The connecting beam is connected between the side walls of the two protective cover structures, a containing cavity is formed in the connecting beam, liquid with striking colors is contained in the containing cavity, and the connecting beam is configured to be capable of being torn under the action of rotating pulling force of the protective cover structures so that the liquid can leak out. According to the nut shield provided by the utility model, a driver can timely perceive that the wheel nut looses at an early stage in a striking manner, so that fastening operation is carried out, accidents caused by loosening of the wheel nut are prevented, and the driving safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle auxiliary equipment, in particular to a nut guard, a wheel and a vehicle capable of early warning of loosening of wheel nuts. Background Art

[0002] The wheels of a vehicle are usually connected and fixed with multiple wheel bolts and wheel nuts. During long-term driving, the wheel nuts will experience a decline in tightening force due to factors such as the vehicle's own load, wheel rotation, and road excitation. If the wheel nuts are not tightened in time, it may cause the wheel nuts to fall off, the wheel bolts to break, and other faults, affecting the normal driving of the vehicle and even causing traffic accidents.

[0003] Currently, manual regular inspections are usually used to eliminate the hidden dangers of loose wheel nuts. However, the loosening of wheel nuts is relatively slight in the early stages, and it is difficult for the driver to detect it in time. Continuing to drive at this time will cause the wheel nuts to loosen quickly, and the probability of loosening of the remaining nuts will also increase. Therefore, the driver is required to regularly tighten the wheel nuts one by one for inspection, which is time-consuming, labor-intensive, and inefficient.

[0004] Therefore, there is an urgent need to provide a nut guard, road and vehicle that can provide early warning of loose wheel nuts to solve the above problems. Utility Model Content

[0005] The first purpose of the utility model is to provide a nut guard that can warn of loose wheel nuts at an early stage, so that the driver can promptly notice the early loosening of the wheel nuts in a conspicuous manner, so that the driver can perform tightening operations in time to prevent accidents.

[0006] The second purpose of the present utility model is to provide a wheel, which, by adopting the above-mentioned nut guard that can warn of loose wheel nuts in an early stage, can make the driver notice in a conspicuous manner when the wheel nuts are loose in an early stage, so as to perform tightening operations and prevent accidents.

[0007] The third object of the present invention is to provide a vehicle that improves driving safety by adopting the above-mentioned wheels.

[0008] To achieve this purpose, the present invention adopts the following technical solutions:

[0009] Nut guards that provide early warning of loose wheel nuts, including:

[0010] At least two shield structures, each shield structure is sleeved on a corresponding wheel nut and can rotate with the wheel nut;

[0011] A connecting beam is connected between the side walls of the two shield structures. A receiving cavity is provided in the connecting beam, and the receiving cavity contains a brightly colored liquid. The connecting beam is configured to be able to tear under the rotational tension of the shield structure to allow the liquid to leak out.

[0012] As an optional solution, the shield structure includes:

[0013] An inner shield, wherein a first matching hole adapted to the wheel nut is formed on the inner shield, and the inner shield is sleeved on the wheel nut through the first matching hole and can rotate with the wheel nut;

[0014] The outer shield is provided with a second matching hole that is adapted to the outer periphery of the inner shield. The outer shield is sleeved on the inner shield through the second matching hole and can rotate with the inner shield. The connecting beam is connected between the side walls of the two outer shields.

[0015] As an optional solution, a first clamping structure is provided on the outer peripheral side wall of the inner shield, and a second clamping structure is provided on the hole wall of the second matching hole, and the second clamping structure is clamped and matched with the first clamping structure;

[0016] And / or, a first fine serration structure is provided on the outer peripheral side wall of the inner shield, and a second fine serration structure is provided on the hole wall of the second matching hole, and the second fine serration structure is engaged with the first fine serration structure.

[0017] As an optional solution, the first fine serration structure first cooperates with one end of the second fine serration structure to form a first inclined tip with a guiding function, and the second fine serration structure first cooperates with one end of the first fine serration structure to form a second inclined tip with a guiding function.

[0018] As an optional solution, an inner convex barb structure that cooperates with the outer periphery of the wheel nut is provided on the hole wall of the first matching hole.

[0019] As an optional solution, the liquid is an oily liquid.

[0020] As an optional solution, fracture weakening grooves are provided on the outer walls at both ends of the connecting beam along its length direction.

[0021] As an optional solution, a liquid injection port and an exhaust port communicating with the accommodating cavity are provided on the connecting beam, and the liquid injection port and the exhaust port are located at the same end of the connecting beam.

[0022] Wheels, including:

[0023] A wheel body, on which a plurality of wheel nuts are evenly spaced along the circumference;

[0024] The nut guard that can warn of loose wheel nuts at an early stage is sleeved on the wheel nuts.

[0025] A vehicle comprising the above-mentioned wheels.

[0026] Beneficial effects of the utility model:

[0027] The present invention provides a nut shield that can provide an early warning of loose wheel nuts. The shield can be mounted on the outside of the wheel nuts. When the wheel nuts become loose in the early stage, the shield structure will be driven to rotate, and the connecting beam will be torn under the rotational tension of the shield structure. After the connecting beam is torn, the eye-catching liquid in the accommodating cavity will leak out and then splash onto the wheel and tire as the wheel rotates. After the driver stops the car, he will find the eye-catching liquid on the wheel and tire, and he will be aware of the early loosening of the wheel nuts in time, and can tighten the loose nuts in time. It can be seen that the nut shield provided by the present invention can make the driver aware of the early loosening of the wheel nuts in a conspicuous manner, so that the driver can tighten the nuts in time to prevent accidents caused by the loosening of the wheel nuts.

[0028] The utility model also provides a wheel, which adopts the above-mentioned nut guard that can warn of loose wheel nuts in an early stage, so that the driver can promptly notice the early loosening of the wheel nuts in a conspicuous manner, thereby performing tightening operations to prevent accidents.

[0029] The utility model also provides a vehicle that adopts the above-mentioned wheel, which can make the driver notice in time in a conspicuous manner when the wheel nut is loose at an early stage, so that the driver can perform a tightening operation to prevent accidents and improve driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the cooperation between the nut guard provided by the present invention and the wheel nut on the wheel body;

[0031] Figure 2 This is a structural diagram of the nut guard provided by the utility model;

[0032] Figure 3 This is an exploded view of the nut guard provided by the utility model;

[0033] Figure 4 This is a front view of the nut guard provided by the utility model;

[0034] Figure 5 yes Figure 4 Cross-sectional view at the middle BB;

[0035] Figure 6 yes Figure 4 A partial enlarged view of point A in the middle;

[0036] Figure 7 yes Figure 5 A partial enlarged view of point C in the middle.

[0037] In the picture:

[0038] 10. Nut guard; 20. Wheel nut; 30. Wheel body;

[0039] 1. Shield structure; 11. Inner shield; 111. First matching hole; 112. First clamping structure; 113. First serration structure; 114. First inclined tip; 115. Inner convex barb structure; 12. Outer shield; 121. Second matching hole; 122. Second clamping structure; 123. Second serration structure; 124. Second inclined tip; 2. Connecting beam; 21. Liquid filling port; 22. Exhaust port; 23. Fracture weak groove; 24. Accommodating cavity. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0041] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0044] The wheels of a vehicle are typically connected and secured with multiple wheel bolts and wheel nuts 20. During long-term driving, the wheel nuts 20 can experience a loss of tightening force due to factors such as the vehicle's own load, the rotation of the wheels, and the excitation of the road surface. Failure to tighten the wheel nuts 20 promptly can lead to malfunctions such as the wheel nuts 20 falling off or the wheel bolts breaking, affecting the normal operation of the vehicle and even causing a traffic accident. Currently, manual regular inspections are commonly used to eliminate the hidden dangers of loose wheel nuts 20. However, the loosening of wheel nuts 20 is relatively subtle in the early stages, making it difficult for the driver to detect it in time. Continuing to drive at this time will cause the wheel nuts 20 to loosen quickly, and the probability of loosening of the remaining nuts will also increase. Therefore, the driver needs to regularly tighten the wheel nuts 20 one by one to check, which is time-consuming, labor-intensive, and inefficient.

[0045] For this reason, Figure 1 and Figure 2 As shown, this embodiment provides a nut guard 10 that can warn of loose wheel nuts in an early stage, hereinafter referred to as the nut guard 10, including a connecting beam 2 and at least two guard structures 1, each guard structure 1 is sleeved on a corresponding wheel nut 20 and can rotate with the wheel nut 20, the connecting beam 2 is connected between the side walls of the two guard structures 1, and a receiving cavity 24 (such as Figure 5 As shown), the accommodating cavity 24 contains a liquid with a striking color, such as red, blue or green, and the connecting beam 2 is configured to be able to tear under the rotational tension of the shield structure 1 to allow the liquid to leak out.

[0046] In some related technologies, whether the wheel nut 20 is loose is determined only by observing the fracture of the connecting beam 2. However, when the wheel nut 20 is loose in the early stage, the connecting beam 2 may only have some minor tears, which are not easy to detect by naked eye observation. However, the nut shield 10 provided in this embodiment, when in use, the two shield structures 1 connected to the connecting beam 2 are respectively sleeved on the corresponding wheel nuts 20. When the wheel nut 20 is loose in the early stage, it will drive the shield structure 1 to rotate. At this time, the connecting beam 2 will be subjected to tension and bending moment. When the force exceeds the strength limit of the connecting beam 2, it will cause the connecting beam 2 to tear. After the connecting beam 2 is torn, the eye-catching liquid in the accommodating cavity 24 will leak out and then be splashed onto the wheel and tire as the wheel rotates. After the driver stops the car and finds the eye-catching liquid on the wheel and tire, he can promptly realize that the wheel nut 20 has loosened in the early stage and tighten the loose nut in time. It can be seen that the nut guard 10 can make the driver notice in a conspicuous manner when the wheel nut 20 is loosened in the early stage, so that the driver can perform tightening operations to prevent the loosening of the wheel nut 20 from causing accidents.

[0047] In addition, the nut guard 10 provided in this embodiment is directly installed on the wheel nut 20, does not affect any performance of the vehicle, can be installed and used before or after the vehicle leaves the factory, does not require special equipment, can be installed manually, and is easy to install. Moreover, the guard structure 1 can cover the outside of the wheel nut 20 to prevent the wheel nut 20 from being directly exposed to the outside. It is beautiful and has a certain waterproof protection function, which can prevent the wheel nut 20 from being damaged.

[0048] In an optional embodiment, the brightly colored liquid in the accommodating chamber 24 can be selected as an oily liquid, such as ink, oily color paste, etc. This can prevent the liquid from being washed away by rainwater on rainy days and causing failure to issue an alarm. After the driver notices it, he can wipe it off with soapy water during maintenance or car washing.

[0049] Further, if Figure 2 As shown, the connecting beam 2 is provided with an injection port 21 and an exhaust port 22 that communicate with the accommodating cavity 24. The injection port 21 and the exhaust port 22 are located at the same end of the connecting beam 2. A brightly colored liquid can be injected into the accommodating cavity 24 through the injection port 21. If there is air inside the accommodating cavity 24, injection will be difficult. Therefore, the exhaust port 22 can exhaust the air inside the accommodating cavity 24 during injection. Since the injection port 21 and the exhaust port 22 are located at the same end of the connecting beam 2, liquid will hardly leak from the exhaust port 22 during injection, which will not affect normal injection. After the liquid is injected, the injection port 21 and the exhaust port 22 can be sealed with glue.

[0050] In this embodiment, if Figure 2As shown, the connecting beam 2 has fracture-weakened grooves 23 formed on its outer walls at both ends along its length. Specifically, the connecting beam 2 has fracture-weakened grooves 23 formed on opposite sides of its width at each end along its length. Fracture of the connecting beam 2 occurs preferentially at the fracture-weakened grooves 23, making it more susceptible to fracture when the shield structure 1 rotates.

[0051] In another optional embodiment, the connecting beam 2 can be configured such that the width near the ends is smaller than the width in the middle, which can also make the connecting beam 2 easier to break near the ends. In another optional embodiment, the connecting beam 2 can be configured as a gradient structure, with the width gradually decreasing from the middle to the ends, which can also make the connecting beam 2 easier to break near the ends.

[0052] It should be noted that the number of wheel nuts 20 on each wheel is generally 4, 5, 6, 8, or 10, and the number of the shield structures 1 can be two or more, for example Figure 2 As shown in FIG, two shield structures 1 and one connecting beam 2 are included. When the number of shield structures 1 is greater than two, the number of connecting beams 2 increases accordingly.

[0053] In this embodiment, if Figure 1 and Figure 2 As shown, the nut guard 10 comprises two guard structures 1 and a connecting beam 2. The connecting beam 2 is connected to the two guard structures 1 at both ends, allowing it to be assembled onto two adjacent wheel nuts 20 during use. When the number of wheel nuts 20 is even, one nut guard 10 can be assembled onto each pair of adjacent wheel nuts 20, providing a warning of looseness for each wheel nut 20. Because the two guard structures 1 and the connecting beam 2 form a minimum unit, less material is used, effectively reducing operational costs. Furthermore, assembly onto two adjacent wheel nuts 20 is relatively easy.

[0054] In another optional embodiment, three shield structures 1 may be provided, with a connecting beam 2 provided between any two adjacent shield structures 1. The arrangement of the three shield structures 1 matches the arrangement of the wheel nuts 20 on the wheel, so that one nut shield 10 can simultaneously cover three wheel nuts 20. Of course, in other embodiments, the number of shield structures 1 may be set to four, five, or more according to actual needs, which will not be repeated here.

[0055] like Figures 1 to 3As shown, the shield structure 1 includes an inner shield 11 and an outer shield 12. The inner shield 11 is provided with a first matching hole 111 adapted to the wheel nut 20. The inner shield 11 is sleeved on the wheel nut 20 through the first matching hole 111 and can rotate with the wheel nut 20. The outer shield 12 is provided with a second matching hole 121 adapted to the outer periphery of the inner shield 11. The outer shield 12 is sleeved on the inner shield 11 through the second matching hole 121 and can rotate with the inner shield 11. The connecting beam 2 is connected between the side walls of the two outer shields 12. It should be noted that Figure 1 In the figure, since the outer shield 12 blocks the inner shield 11 and the wheel nuts 20 , for illustration purposes, the corresponding numbers of the inner shield 11 and the wheel nuts 20 point to the structures blocked inside the outer shield 12 .

[0056] During use, first sleeve the two inner shields 11 onto the corresponding wheel nuts 20 respectively, and then sleeve the two outer shields 12 onto the outside of the corresponding inner shields 11 respectively. When the wheel nuts 20 become loose early, the inner shield 11 will be driven to rotate, and when the inner shield 11 rotates, the outer shield 12 will be driven to rotate. Due to the tension and bending moment of the outer shield 12, the connecting beam 2 will be torn. After the connecting beam 2 is torn, the eye-catching liquid in the accommodating cavity 24 will leak out, and then be splashed onto the wheels and tires as the wheels rotate. After the driver stops the car and finds the eye-catching liquid on the wheels and tires, he can promptly realize that the wheel nuts 20 have become loose early, and tighten the loose nuts in time.

[0057] In an alternative embodiment, the inner shield 11 is made of a plastic material such as nylon. The first mating hole 111 of the inner shield 11 is a hexagonal hole that is compatible with the wheel nut 20. The outer ring of the inner shield 11 is circular, resulting in an overall shape of an outer circle and an inner hexagon. The outer shield 12 is made of a transparent hard plastic material such as acrylic. The second mating hole 121 of the outer shield 12 is a round hole that is compatible with the outer shape of the inner shield 11. The two outer shields 12 are connected to the connecting beam 2 as a whole, and the overall shape resembles a dumbbell.

[0058] Further, if Figure 1 As shown, the connecting beam 2 and the two outer shields 12 are an integrally formed structure, which can form a connection relationship between the connecting beam 2 and the outer shields 12 during the molding process, without the need for subsequent connection and assembly, and the structure is simple.

[0059] In an optional embodiment, if Figure 3 As shown, the wall of the first mating hole 111 is provided with an inner convex barb structure 115 that mates with the outer periphery of the wheel nut 20. The wheel nut 20 extends into the first mating hole 111 and is then fixedly engaged by the inner convex barb structure 115 in the first mating hole 111 to prevent the inner shield 11 from falling off.

[0060] In an optional embodiment, if Figure 5and Figure 7 As shown, a first clamping structure 112 is provided on the outer peripheral side wall of the inner shield 11, and a second clamping structure 122 is provided on the hole wall of the second matching hole 121. The second clamping structure 122 is clamped and matched with the first clamping structure 112. Specifically, as Figure 7 As shown, the first snap-fitting structure 112 is a raised snap-fitting structure, and the second snap-fitting structure 122 is a raised structure with a snap-fitting slot formed in the middle, in which the snap-fitting slot is snapped. The slopes of the first snap-fitting structure 112 and the second snap-fitting structure 122 are for easy installation, and the vertical surfaces of the first snap-fitting structure 112 and the second snap-fitting structure 122 cooperate to form a locking effect to prevent it from falling off.

[0061] In an optional embodiment, if Figure 4 and Figure 6 As shown, a first fine serration structure 113 is provided on the outer peripheral side wall of the inner shield 11, and a second fine serration structure 123 is provided on the hole wall of the second mating hole 121. The second fine serration structure 123 meshes with the first fine serration structure 113. The serrations of the first fine serration structure 113 and the second fine serration structure 123 are staggered and engaged with each other, thereby achieving a circumferential locking of the inner shield 11 and the outer shield 12, preventing the inner shield 11 and the outer shield 12 from rotating circumferentially relative to each other.

[0062] In the related solutions of the prior art, the inner shield 11 is not provided, but only the outer shield 12 is provided. The outer shield 12 is provided with a hexagonal inner hole so as to be fitted over the wheel nut 20. When the wheel nut 20 is loosened, the outer shield 12 can rotate under the drive of the wheel nut 20, and the connecting beam 2 can break under the action of the rotational tension of the outer shield 12, thereby providing a warning of the loosening of the wheel nut 20. However, since the two outer shields 12 are connected by the connecting beam 2, after the wheel nut 20 is tightened, it is necessary to ensure that the angular positions of the hexagonal inner holes of the two outer shields 12 are completely aligned with the angular positions of the corresponding wheel nuts 20 before the two outer shields 12 can be respectively fitted over the corresponding wheel nuts 20, which makes installation relatively difficult.

[0063] In order to solve the above problem, in an optional embodiment, as Figure 3As shown, one end of the first serration structure 113 first mates with the second serration structure 123 to form a first, inclined, guiding tip 114. The other end of the second serration structure 123 first mates with the first serration structure 113 to form a second, inclined, guiding tip 124. Since the inner shield 11 is a single piece, and the two outer shields 12 are integral with the connecting beam 2, during use, the two inner shields 11 are first sleeved onto their corresponding wheel nuts 20, and then the two outer shields 12 are sleeved onto the outer surfaces of their corresponding inner shields 11. Firstly, the first and second serration structures 113 and 123 have a large number of serrations. Furthermore, the guiding first, inclined, and second inclined tips 124 at the ends of the first and second serration structures 113, as well as the inherent deformability of the plastic components, ensure that the outer and inner shields 12 can be sleeved together regardless of the angle of the wheel nuts 20 after tightening, making installation relatively easy.

[0064] like Figure 1 As shown, this embodiment further provides a wheel, comprising a wheel body 30 and the aforementioned nut guards 10. A plurality of wheel nuts 20 are evenly spaced along the circumference of the wheel body 30, and the nut guards 10 are sleeved over the wheel nuts 20. The number of nut guards 10 can be set based on the specific number of wheel nuts 20 on the wheel body 30, and is not specifically limited herein.

[0065] When the wheel nut 20 becomes loose early, it will drive the shield structure 1 to rotate. At this time, the connecting beam 2 will be subjected to tension and bending moment. When the force exceeds the strength limit of the connecting beam 2, it will cause the connecting beam 2 to tear. After the connecting beam 2 tears, the eye-catching liquid in the accommodating cavity 24 will leak out, and then be splashed onto the wheel and tire as the wheel rotates. After the driver stops the car and finds the eye-catching liquid on the wheel and tire, he can realize in time that the wheel nut 20 has loosened early, and tighten the loose nuts in time.

[0066] It can be seen that the wheel provided in this embodiment, by providing the above-mentioned nut guard 10, can make the driver notice in a conspicuous manner when the wheel nut 20 is loosened in the early stage, so as to perform tightening operations to prevent the loosening of the wheel nut 20 and cause accidents.

[0067] This embodiment also provides a vehicle, comprising a vehicle body with the aforementioned wheels mounted thereon. The wheel body 30 is connected to the vehicle body via wheel bolts and wheel nuts 20, which drive the wheel body 30 to rotate and thereby propel the vehicle body. The vehicles in this embodiment include, but are not limited to, freight vehicles, special vehicles, and engineering vehicles.

[0068] The vehicle provided in this embodiment, by being provided with the above-mentioned wheels, can promptly let the driver notice in a conspicuous manner when the wheel nuts 20 become loose in the early stage, so that the driver can perform tightening operations, thereby preventing accidents caused by the loosening of the wheel nuts 20 and improving driving safety.

[0069] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. The nut guard can warn of loose wheel nuts at an early stage, which is characterized by: include: At least two shield structures (1), each shield structure (1) is sleeved on a corresponding wheel nut (20) and can rotate along with the wheel nut (20); A connecting beam (2) is connected between the side walls of the two shield structures (1). A receiving cavity (24) is provided in the connecting beam (2). The receiving cavity (24) contains a brightly colored liquid. The connecting beam (2) is configured to be able to tear under the rotational tension of the shield structure (1) to allow the liquid to leak out.

2. The nut guard capable of early warning of loose wheel nuts according to claim 1, characterized in that: The shield structure (1) comprises: An inner shield (11), wherein a first matching hole (111) adapted to the wheel nut (20) is formed on the inner shield (11), and the inner shield (11) is sleeved on the wheel nut (20) through the first matching hole (111) and can rotate along with the wheel nut (20); An outer shield (12) is provided with a second matching hole (121) adapted to the outer periphery of the inner shield (11); the outer shield (12) is sleeved on the inner shield (11) through the second matching hole (121) and can rotate with the inner shield (11); the connecting beam (2) is connected between the side walls of the two outer shields (12).

3. The nut guard capable of early warning of loose wheel nuts according to claim 2, characterized in that: A first clamping structure (112) is provided on the outer peripheral side wall of the inner shield (11), a second clamping structure (122) is provided on the hole wall of the second matching hole (121), and the second clamping structure (122) is clamped and matched with the first clamping structure (112); And / or, a first fine serration structure (113) is provided on the outer peripheral side wall of the inner shield (11), a second fine serration structure (123) is provided on the hole wall of the second matching hole (121), and the second fine serration structure (123) is meshed with the first fine serration structure (113).

4. The nut guard capable of early warning of loose wheel nuts according to claim 3, characterized in that: One end of the first fine sawtooth structure (113) first cooperates with the second fine sawtooth structure (123) to form a first inclined tip (114) with a guiding function, and the second fine sawtooth structure (123) first cooperates with the first fine sawtooth structure (113) to form a second inclined tip (124) with a guiding function.

5. The nut guard capable of early warning of loose wheel nuts according to claim 2, characterized in that: An inner convex barb structure (115) that cooperates with the outer periphery of the wheel nut (20) is provided on the hole wall of the first matching hole (111).

6. The nut guard capable of early warning of loose wheel nuts according to any one of claims 1 to 5, characterized in that: The liquid is an oily liquid.

7. The nut guard capable of early warning of loose wheel nuts according to any one of claims 1 to 5, characterized in that: The connecting beam (2) is provided with fracture weakening grooves (23) on the outer walls at both ends along the length direction thereof.

8. The nut guard capable of early warning of loose wheel nuts according to any one of claims 1 to 5, characterized in that: The connecting beam (2) is provided with a liquid injection port (21) and an exhaust port (22) that are in communication with the accommodating cavity (24); the liquid injection port (21) and the exhaust port (22) are located at the same end of the connecting beam (2).

9. A wheel, characterized in that include: A wheel body (30), wherein a plurality of wheel nuts (20) are evenly spaced and arranged along the circumference of the wheel body (30); The nut guard capable of providing an early warning of loose wheel nuts as described in any one of claims 1 to 8 is sleeved on the wheel nut (20).

10. A vehicle, characterized in that Comprising the wheel as claimed in claim 9.

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