Wheel system and vehicle

Abstract

The application discloses a kind of wheel system and vehicle, it is related to automobile parts and safety protection device technical field, wherein the wheel system includes wheel hub, decorative cover and thermal response contact component;Decorative cover is located at the outer side of the wheel hub, and with the rim of the wheel hub rotatably connected, and can be rotated relative to the wheel hub;Thermal response contact component is arranged in the wheel hub or the decorative cover, when temperature exceeds the preset temperature threshold of the thermal response contact component, the wheel hub is drivenly connected with the decorative cover by the thermal response contact component.The application provides a kind of wheel system with simple structure, high reliability, without additional power supply support, and realizes the brake overheating alarm function by mechanical method.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical fields of automobile accessories and safety protection devices, and particularly relates to a wheel system and a vehicle. BACKGROUND

[0002] In some special cases, long-time braking leads to high temperature of brake pads, resulting in heat recession. The direct consequence is the decline of braking performance, the increase of braking distance, and even failure. At present, most modern vehicles are equipped with brake overheating alarm devices to ensure driving safety. However, the traditional brake overheating alarm usually relies on electronic sensors and signal lights. This technology not only needs additional power supply and wiring, increases the complexity of design and maintenance, and has high cost, but also has a decline in reliability and accuracy in extreme environments. SUMMARY

[0003] The main purpose of the present application is to provide a wheel system and a vehicle, which has a simple structure and is reliable, does not need additional power supply, electronic sensors and signal lights, and realizes the brake overheating alarm function through a mechanical method.

[0004] To achieve the above purpose, the present application provides a wheel system, which comprises:

[0005] a hub;

[0006] a decorative cover arranged on the outer side of the hub and rotatably connected with the rim of the hub so as to rotate relative to the hub; and

[0007] a thermal response contact assembly arranged on the hub or the decorative cover, and the hub and the decorative cover are drivingly connected through the thermal response contact assembly when the temperature exceeds a preset temperature threshold of the thermal response contact assembly.

[0008] In an embodiment, the thermal response contact assembly comprises a temperature sensing metal, an elastic member connected with the temperature sensing metal, and a permanent magnet connected with the elastic member, the permanent magnet is arranged on the decorative cover, the temperature sensing metal and the permanent magnet are magnetically attracted and matched to extrude the elastic member, the magnetism of the temperature sensing metal decreases with the increase of temperature, and the temperature sensing metal is in contact with the hub under the action of the elastic member.

[0009] In an embodiment, the permanent magnet is arranged on the edge of the decorative cover, the temperature sensing metal is in contact with the rim of the hub, and the decorative cover rotates under the driving of the hub.

[0010] In an embodiment, the edge of the decorative cover is provided with a mounting seat, the permanent magnet is arranged in the mounting seat, and an installation ring groove is defined between the permanent magnet and the inner wall of the mounting seat, the temperature-sensitive metal is movably arranged in the installation ring groove and covers the permanent magnet, and the elastic member is arranged between the permanent magnet and the temperature-sensitive metal.

[0011] In an embodiment, the temperature-sensitive metal comprises a mounting cylinder and a contact head connected to one end of the mounting cylinder, the contact head is larger than the mounting cylinder, the mounting cylinder is arranged in the installation ring groove, and the contact head abuts against the end face of the mounting seat away from the decorative cover.

[0012] In an embodiment, the radial cross-sectional profile of the contact head is semicircular.

[0013] In an embodiment, the elastic member is a compression spring.

[0014] In an embodiment, the thermal response contact assembly comprises a contact member, a thermal sensitive member connected to the contact member, and a mounting member for mounting the thermal sensitive member and the contact member, the mounting member is arranged in the decorative cover, the thermal sensitive member can change its spatial volume with the increase of temperature, so that the contact member contacts the rim of the wheel hub.

[0015] In an embodiment, the mass distribution of the decorative cover on the circumference is non-uniform, and the thermal response contact assembly is arranged at a position where the mass distribution of the decorative cover is relatively larger.

[0016] The application also provides a vehicle comprising the wheel system as described above.

[0017] In the technical solution of the application, the brake is arranged in the wheel hub, the decorative cover is rotationally connected to the wheel hub, in the normal state, the rotation of the wheel hub does not affect the decorative cover, the wheel hub rotates relative to the decorative cover, the decorative cover is used for aesthetics and protection of the wheel hub, the decorative cover can cover the bolt holes of the wheel hub, preventing dust and dirt from entering the inside of the wheel, and the decorative cover also helps to improve the aerodynamic performance and reduce the wind resistance coefficient; when the temperature of the brake is too high, the thermal response contact assembly responds, when the temperature exceeds the preset temperature threshold, the thermal response contact assembly changes, and the decorative cover and the wheel hub can be contacted, the suspended decorative cover starts to rotate synchronously through the friction force, and an abnormal sound is generated through the rotation of the decorative cover and the friction process to be perceived by a person. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from the structures shown in the drawings without any creative effort.

[0019] Figure 1 Structure schematic diagram of an embodiment of the wheel system provided by the present application;

[0020] Figure 2 Structure schematic diagram of an embodiment of the wheel system provided by the present application; Figure 1 Structure schematic diagram of an embodiment of the wheel system provided by the present application;

[0021] Figure 3 Structure schematic diagram of an embodiment of the wheel system provided by the present application; Figure 2 Structure schematic diagram of an embodiment of the wheel system provided by the present application;

[0022] Figure 4 Structure schematic diagram of an embodiment of the wheel system provided by the present application; Figure 2 Structure schematic diagram of an embodiment of the wheel system provided by the present application;

[0023] Figure 5 Structure schematic diagram of an embodiment of the wheel system provided by the present application. Figure 1 Structure schematic diagram of an embodiment of the wheel system provided by the present application.

[0024] Explanation of the reference signs:

[0025] 100, wheel hub; 110, wheel rim; 120, wheel disc;

[0026] 200, decorative cover; 210, mounting seat; 211, mounting ring groove;

[0027] 300, thermal response contact assembly;

[0028] 310, temperature sensing metal; 311, contact head; 312, mounting cylinder;

[0029] 320, elastic member;

[0030] 330, permanent magnet;

[0031] 400, bearing.

[0032] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0034] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, motion condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0035] In addition, if the embodiments of the present application involve descriptions such as “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, “and / or” or “and / or” appearing throughout the text means that the three parallel schemes include A scheme, or B scheme, or A and B schemes are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0036] Brakes are key components in mechanical motion control. The working principle of brakes is based on the principle of dynamic and static balance in physics, which generates resistance through friction or other means to reduce or eliminate kinetic energy. In the field of automobiles, brakes are particularly important because they are directly related to the safety of driving. Mechanical brakes are the most common type, which rely on mechanical force acting on friction materials to generate braking force. The working principle of brakes is based on the principle of dynamic and static balance in physics, which generates resistance through friction or other means to reduce or eliminate kinetic energy. In the field of automobiles, according to different designs, brakes can be divided into two categories: drum brakes and disc brakes. The rotating element of drum brakes is the brake drum, while the disc brakes use the end face as the working surface. Friction generates heat, and overheating of the brake will lead to thermal decay (high temperature causes the brake disc friction coefficient to decrease and the brake oil to evaporate, reducing brake performance and even failing), and on the other hand, it will also cause the brake pad to be more prone to wear, reducing its service life and affecting driving safety.

[0037] The present application mainly wants to solve the problem that when the temperature of the wheel brake is too high, the decorative cover and the wheel hub are changed from relative rotation to synchronous rotation by the thermal response contact assembly, and the abnormal noise caused by the rotation and friction reminds the personnel of the overheating of the brake system, thereby preventing possible safety hazards.

[0038] Please refer to Figures 1 to 5 In an embodiment of the present application, the wheel system comprises a wheel hub 100, a decorative cover 200 arranged on the wheel hub 100, and a brake arranged in the wheel hub 100. The decorative cover 200 is arranged on the outer side of the wheel hub 100 and is rotationally connected with the rim 120 of the wheel hub 100, and can rotate relative to the wheel hub 100. When the wheel is normally moving, the wheel hub 100 and the decorative cover 200 rotate relative to each other. When the temperature exceeds the preset temperature threshold of the thermal response contact assembly 300, the wheel hub 100 and the decorative cover 200 are drivingly connected through the thermal response contact assembly 300. When the temperature of the brake is too high, the thermal response contact assembly 300 will change, contact and connect the decorative cover 200 and the wheel hub 100, and through the friction force, the originally suspended (relative rotation) decorative cover 200 starts to rotate synchronously with the wheel hub 100. By making the decorative cover 200 rotate synchronously with the wheel hub 100 when the brake is overheated and producing abnormal noise, the driver or relevant personnel can be reminded of the overheating of the brake system, and timely measures can be taken to prevent possible safety hazards. The thermal response contact assembly 300 provides a simple and effective mechanism to respond to the high temperature of the brake, and improves the overall reliability of the wheel system. The decorative cover 200 not only has the functions of being beautiful and protecting the wheel hub 100, but also can cover the bolt holes of the wheel hub 100 to prevent dust and dirt from entering the inside of the wheel, and also helps to improve the aerodynamic performance and reduce the drag coefficient. When the brake is overheated, it can also serve as an overheating reminder device.

[0039] In combination Figure 5 In this embodiment, the decorative cover 200 is rotationally connected with the wheel hub 100 through a bearing 400, the bearing 400 is installed in the middle of the rim 120 of the wheel hub 100, and the center of the decorative cover 200 is fixed at the rim 120 by a bolt; in other embodiments, the two can also be nested to form a rotating shaft structure.

[0040] In an embodiment, the thermal response contact assembly 300 is arranged on the wheel hub 100; the thermal response contact assembly 300 can be arranged on the wheel hub 100 to contact the decorative cover 200 when the temperature rises, and through the friction force, the decorative cover 200 follows the rotation of the wheel, and in order to make the abnormal motion more obvious, the decorative cover 200 can be arranged to be uneven in mass in the rotation direction, to produce eccentric motion; refer to Figure 2In other embodiments, the thermal response contact assembly 300 is arranged on the decorative cover 200, and when the temperature rises, the thermal response contact assembly 300 contacts the wheel hub 100, so that the decorative cover 200 rotates with the wheel. Since the thermal response contact assembly 300 is arranged on the decorative cover 200, the wheel hub 100 does not need to be modified, which can reduce the cost of assembly and processing and improve production efficiency.

[0041] It should be noted that the thermal response contact assembly 300 is a component composed of a temperature-sensitive metal 310, an elastic member 320 connected to the temperature-sensitive metal 310, and a permanent magnet 330 connected to the elastic member 320; and a contact member, a heat-sensitive member connected to the contact member, and a mounting member for mounting the heat-sensitive member and the contact member. The thermal response indicates that the function of the thermal response contact assembly 300 is to respond to changes in temperature; the contact indicates that the thermal response contact assembly 300 will generate contact when the temperature rises, so that the wheel hub 100 and the decorative cover 200 are in transmission.

[0042] In order to more accurately control the response of the thermal response contact assembly 300 when the brake temperature is too high, and to ensure that the decorative cover 200 and the wheel hub 100 can rotate synchronously at the right time, while maintaining the stability and non-interference of this mechanism at low temperatures. In an embodiment, the thermal response contact assembly 300 includes a temperature-sensitive metal 310, an elastic member 320 connected to the temperature-sensitive metal 310, and a permanent magnet 330 connected to the elastic member 320. The permanent magnet 330 is arranged on the decorative cover 200, the temperature-sensitive metal 310 is magnetically attracted to the permanent magnet and presses the elastic member 320, and when the temperature exceeds the preset temperature threshold, the temperature-sensitive metal 310 loses magnetism and contacts the wheel hub 100 under the action of the elastic member 320.

[0043] Referring to Figure 3 In a low-temperature state, the temperature-sensitive metal 310 maintains magnetism and is attracted to the permanent magnet 330 arranged on the decorative cover 200, but due to the pressing action of the elastic member 320, they maintain a certain gap and do not directly contact the wheel hub 100, so that the decorative cover 200 and the wheel hub 100 can rotate relative to each other. In a low-temperature state, due to the magnetic attraction of the temperature-sensitive metal 310 and the permanent magnet 330 and the pressing action of the elastic member 320, the thermal response contact assembly 300 remains stable and does not trigger the synchronous rotation mechanism by mistake. Referring to Figure 4The magnetism of the temperature-sensitive metal 310 decreases with the increase of temperature, and the elastic member 320 is in contact with the hub 100, that is, the elastic force of the elastic member 320 is greater than the magnetic attraction between the temperature-sensitive metal 310 and the permanent magnet 330. At this time, under the action of the elastic member 320, the temperature-sensitive metal 310 moves to the hub 100 and is in contact with it, and through the friction force, the decorative cover 200 starts to rotate synchronously with the hub 100. When the thermal response contact assembly 300 is arranged on the decorative cover 200, a temperature-sensitive metal 310 with a relatively low Curie point can be used. For example, when the heat generated by the brake friction is transmitted to the rim 110, the temperature of the brake has reached a relatively high degree.

[0044] The design of the above-mentioned thermal response contact assembly 300 is relatively simple, easy to maintain and replace, and reduces the maintenance cost. Moreover, this scheme not only solves the problem of overheating of the brake, but also can further expand the function according to the needs, for example, by adjusting the magnetic change range of the temperature-sensitive metal 310 to adapt to the temperature requirements of different vehicle models or different use environments.

[0045] The permanent magnet 330 is arranged at the edge of the decorative cover 200, and the temperature-sensitive metal 310 is in contact with the rim 110 of the hub 100, so that the decorative cover 200 is driven to rotate by the hub 100. By placing the thermal response contact assembly 300 at the edge of the decorative cover 200, it can be more directly exposed to the heat generated by the brake, thereby improving the efficiency of the thermal response. When the brake is overheated, the thermal response contact assembly 300 can reach the preset temperature threshold and respond more quickly. The complexity of installing additional thermal response assemblies on the hub 100 is reduced, thereby simplifying the overall structure of the wheel system. In addition, since the thermal response assembly is directly integrated on the decorative cover 200, the manufacturing and installation costs can be reduced.

[0046] In addition, since the thermal response contact assembly 300 is installed at the edge of the decorative cover 200, the rotation anomaly and friction anomaly caused by the eccentricity of the decorative cover 200 can be more easily perceived by the driver or relevant personnel. This anomaly provides an intuitive overheating reminder method, which helps to discover and handle the overheating problem of the brake in time.

[0047] In further schemes, the thermal response contact assembly 300 can be arranged circumferentially on the decorative cover 200, such as two, three, or even more on the same radius along the circumference; or arranged on different radii; or arranged on different radii, and based on the arrangement of multiple on different radii, arranged in a staggered manner or in different numbers, etc., thereby improving the rotation response and noise to remind the user to perceive.

[0048] Referring to Figures 2 to 4Specifically, the edge of the decorative cover 200 is provided with a mounting seat 210, the permanent magnet 330 is arranged in the mounting seat 210, and the mounting ring groove 211 is defined between the permanent magnet 330 and the inner wall of the mounting seat 210, the temperature-sensitive metal 310 is movably arranged in the mounting ring groove 211 and sleeved with the permanent magnet 330, and the elastic member 320 is arranged between the permanent magnet 330 and the temperature-sensitive metal 310. The permanent magnet 330 is stably mounted in the mounting seat 210 and cooperates with the inner wall of the mounting seat 210 to form the mounting ring groove 211, thereby providing a stable installation environment for the temperature-sensitive metal 310. The temperature-sensitive metal 310 is movably arranged in the mounting ring groove 211, and the mounting ring groove 211 also has a guiding effect, so that the temperature-sensitive metal 310 can freely move within a certain range while maintaining stability.

[0049] The temperature-sensitive metal 310 includes the mounting cylinder 312 and the contact head 311 connected to one end of the mounting cylinder 312, the projection area of the contact head 311 in the axial direction of the mounting cylinder 312 is greater than that of the mounting cylinder 312, the mounting cylinder 312 is arranged in the mounting ring groove 211, and the contact head 311 abuts against the upper end surface of the mounting seat 210. The installation and maintenance of the temperature-sensitive metal 310 are more convenient. The mounting cylinder 312 can be easily placed in the mounting ring groove 211, and the contact head 311 abuts against the upper end surface of the mounting seat 210. This simple installation method can save time and cost and reduce the error rate in the installation process. At the same time, due to the close contact between the contact head 311 and the mounting seat 210, the trouble and complexity in the maintenance process are also reduced.

[0050] Specifically, the radial cross-sectional profile of the contact head 311 is semicircular. On the one hand, the semicircular design of the contact head 311 increases the contact area, thereby improving the sensitivity of temperature sensing. The contact head 311 can capture the change of the ambient temperature more quickly and respond accordingly. On the other hand, the contact area with the hub 100 is also increased, and the semicircular contact head 311 also avoids damaging the hub 100.

[0051] It should be noted that the radial direction refers to the cross-sectional direction parallel to the axial direction.

[0052] Specifically, in the above scheme, the elastic member 320 is configured as a compression spring; in other embodiments, the elastic member 320 can also be configured as other materials with elasticity, such as elastic sheets, rubber, etc.

[0053] In other embodiments, the thermal response contact assembly 300 includes a contact member, a thermal sensitive member connected to the contact member, and a mounting member for mounting the thermal sensitive member and the contact member. The mounting member is arranged in the decorative cover 200. The thermal sensitive member can change its spatial volume as the temperature increases, so that when the preset temperature threshold is exceeded, the contact member is in contact with the rim 110 of the hub 100.

[0054] Specifically, in an embodiment, the heat-sensitive member is configured as an air bag filled with high-thermal-expansion gas, the air bag is made larger by expansion of the gas, and the mounting member can guide the expansion direction of the air bag and push the contact member to move towards the hub 100 to generate contact.

[0055] In another embodiment, the heat-sensitive member is configured as a bimetallic strip laminated by two metals with different thermal expansion coefficients, one end of the bimetallic strip is fixed on the decorative cover 200, and the other end is designed to bend to contact the rim 110 of the hub 100 when the temperature rises.

[0056] Similarly, in order to improve the response of the decorative cover 200 and facilitate user perception, the decorative cover is designed to be uneven in mass on the circumference, i.e., eccentric motion occurs during rotation with the center as the center. Under normal conditions, the decorative cover 200 does not reflect the uneven mass because it rotates (suspends) relative to the hub 100, but when friction transmission makes the decorative cover 200 rotate with the hub 100, the decorative cover 200 causes the wheel to vibrate due to the uneven mass, which is perceived by the driver, and the friction process also produces an abnormal sound, which is perceived by the personnel.

[0057] The present application also provides a vehicle, which comprises a vehicle body and a wheel system, the specific structure of the wheel system is referred to the above embodiments, since the vehicle body adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0058] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, any equivalent structural transformation made under the technical concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A wheel system, characterized in that, include: Wheel hub; A decorative cover is provided on the outside of the wheel hub and is rotatably connected to the rim of the wheel hub, and can rotate relative to the wheel hub; and A thermally responsive contact component is disposed on the wheel hub or the decorative cover. When the brake temperature is too high, the thermally responsive contact component responds. When the temperature exceeds the preset temperature threshold of the thermally responsive contact component, the thermally responsive contact component changes and contacts the decorative cover and the wheel hub. The thermally responsive contact component causes the suspended decorative cover and the wheel hub to rotate synchronously through friction, and generates abnormal noise through the friction process.

2. The wheel system as claimed in claim 1, characterized in that, The thermally responsive contact assembly includes a temperature-sensitive metal, an elastic element connected to the temperature-sensitive metal, and a permanent magnet connected to the elastic element. The permanent magnet is disposed on the decorative cover. The temperature-sensitive metal and the permanent magnet magnetically attract each other to press the elastic element. The magnetism of the temperature-sensitive metal weakens as the temperature rises, and it comes into contact with the wheel hub under the action of the elastic element.

3. The wheel system as described in claim 2, characterized in that, The permanent magnet is located on the edge of the decorative cover, and the temperature-sensitive metal is in contact with the rim of the hub, causing the decorative cover to rotate under the drive of the hub.

4. The wheel system as claimed in claim 2, characterized in that, The decorative cover has a mounting base on its edge. The permanent magnet is located in the mounting base and defines a mounting ring groove with the inner wall of the mounting base. The temperature-sensitive metal is movably embedded in the mounting ring groove and sleeves the permanent magnet. The elastic element is located between the permanent magnet and the temperature-sensitive metal.

5. The wheel system as claimed in claim 4, characterized in that, The temperature-sensitive metal includes a mounting cylinder and a contact head connected to one end of the mounting cylinder. The contact head is larger than the mounting cylinder. The mounting cylinder is located in the mounting annular groove. The contact head abuts against the end face of the mounting base away from the decorative cover.

6. The wheel system as claimed in claim 5, characterized in that, The radial cross-sectional profile of the contact head is semi-circular.

7. The wheel system as claimed in claim 2, characterized in that, The elastic element is a compression spring.

8. The wheel system as claimed in claim 1, characterized in that, The thermal response contact assembly includes a contact element, a thermally sensitive element connected to the contact element, and a mounting element for mounting the thermally sensitive element and the contact element. The mounting element is disposed on the decorative cover. The thermally sensitive element can change its spatial volume as the temperature increases, so that the contact element contacts the rim of the wheel hub.

9. The wheel system as claimed in claim 1, characterized in that, The decorative cover has a non-uniform mass distribution on its circumference, and the thermally responsive contact component is located at a position where the mass distribution of the decorative cover is relatively larger.

10. A vehicle, characterized in that, Includes the wheel system as described in any one of claims 1 to 9.

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