Chassis bushing, vehicle chassis and vehicle

Abstract

The utility model provides a chassis lining, a vehicle chassis and a vehicle, and relates to the technical field of vehicle parts, the chassis lining comprises an inner core, a rubber sleeve, a heating element and a shell, the rubber sleeve is sleeved outside the inner core, the shell is sleeved outside the rubber sleeve, the heating element is arranged inside the rubber sleeve, and the heating element is arranged inside the rubber sleeve. The heating element is used for heating the rubber sleeve to adjust the rigidity of the rubber sleeve. The inner core, the rubber sleeve and the shell are sequentially arranged in a sleeved mode from inside to outside so that the damping and buffering effects of a common chassis lining can be achieved. Due to the fact that the heating element is arranged in the rubber sleeve, the rubber bushing can be heated through the heating element, the rubber sleeve is kept at the proper temperature all the time, namely, the chassis bushing has the proper rigidity and does not become soft or hard along with changes of the external environment temperature, and therefore it is guaranteed that a vehicle has good NVH performance and VD performance all the time; and the riding comfort of a driver and passengers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, and in particular to a chassis bushing, a vehicle chassis and a vehicle. Background Art

[0002] Chassis bushings are an important component of a vehicle's chassis, effectively reducing vibration excitation caused by uneven road surfaces and improving ride comfort for drivers and passengers. Existing chassis bushings are typically equipped with shock-absorbing rubber. Due to the high temperature sensitivity of shock-absorbing rubber, the stiffness of the shock-absorbing rubber, or chassis bushing, changes at different ambient temperatures. Specifically, as the ambient temperature rises, the chassis bushing softens, resulting in an increase in the vehicle's NVH (Noise, Vibration, and Harshness) performance and a decrease in VD (Vibration Damping) performance. As the ambient temperature drops, the chassis bushing stiffens, reducing the vehicle's NVH performance and improving VD performance. This makes it impossible to ensure that the vehicle consistently maintains optimal NVH and VD performance at different ambient temperatures, resulting in a poor ride experience for drivers and passengers. Utility Model Content

[0003] The utility model aims to solve the technical problem that the existing chassis bushing has poor applicability to different driving environment temperatures.

[0004] In the first aspect, the utility model provides a chassis bushing, comprising an inner core, a rubber sleeve, a heating element and an outer shell, wherein the rubber sleeve is sleeved on the outside of the inner core, the outer shell is sleeved on the outside of the rubber sleeve, and the heating element is arranged inside the rubber sleeve, and the heating element is used to heat the rubber sleeve to adjust the stiffness of the rubber sleeve.

[0005] Optionally, the heating element is an electric heating wire.

[0006] Optionally, the heating wire is arranged in a spiral shape along the circumference of the rubber sleeve.

[0007] Optionally, the chassis bushing further includes a temperature detection device and a controller, wherein the controller is electrically connected to the two temperature detection devices respectively, wherein one of the temperature detection devices is used to detect the temperature of the rubber sleeve, and the other temperature detection device is used to detect the ambient temperature.

[0008] Optionally, the chassis bushing further includes a current detection device, which is electrically connected to the controller and is used to detect the current of the heating wire.

[0009] Optionally, the heating element and the rubber sleeve are vulcanized into one body.

[0010] Optionally, a first limiting structure is provided on the circumferential outer wall of the inner core, and a second limiting structure is provided on the circumferential inner wall of the rubber sleeve, and the inner core is mounted in cooperation with the rubber sleeve via the first limiting structure and the second limiting structure.

[0011] Optionally, an axial end face of the inner core is provided with a limiting protrusion protruding along its axial direction, and the inner core is used for limited assembly with vehicle body related components through the limiting protrusion.

[0012] In a second aspect, the present invention provides a vehicle chassis, comprising the above-mentioned chassis bushing.

[0013] In a third aspect, the present invention provides a vehicle comprising the above-mentioned vehicle chassis.

[0014] The chassis bushing, vehicle chassis, and vehicle of the present invention have at least the following advantages over the prior art:

[0015] The inner core, rubber sleeve and outer shell are sequentially mounted from the inside to the outside to achieve the shock absorption and buffering effects of an ordinary chassis bushing. Since a heating element is provided inside the rubber sleeve, the heating element can be used to heat the rubber sleeve so that the rubber sleeve is always kept at a suitable temperature, thereby achieving real-time adjustment of the stiffness of the chassis bushing, so that it is always kept at a suitable stiffness and will not become soft or hard with changes in the external ambient temperature, thereby ensuring that the vehicle always has good NVH performance and VD performance, and improving the riding comfort of the driver and passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the exploded structure of a chassis bushing according to an embodiment of the present utility model;

[0017] Figure 2 This is a partial structural diagram of a chassis bushing according to an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the chassis bushing stiffness adjustment according to an embodiment of the present utility model.

[0019] Description of reference numerals:

[0020] 1. Inner core; 11. First limiting structure; 12. Limiting protrusion; 2. Rubber sleeve; 3. Heating element; 4. Outer shell; 5. Temperature detection device; 6. Controller; 7. Current detection device. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0022] In the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "matched" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; they may refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0023] In addition, it should be noted that in the description of the present invention, it should be noted that the terminology in each embodiment, such as "upper", "lower", "front", "back" and other words indicating direction, are only for simplifying the description of the positional relationship based on the drawings in the specification, and do not mean that the components and devices referred to must be operated in accordance with the specific directions and defined operations and methods and structures in the specification. Such directional nouns do not constitute a limitation on the present invention.

[0024] like Figure 1-Figure 2 As shown, a chassis bushing according to an embodiment of the present invention includes an inner core 1, a rubber sleeve 2, a heating element 3 and an outer shell 4. The rubber sleeve 2 is sleeved on the outside of the inner core 1, the outer shell 4 is sleeved on the outside of the rubber sleeve 2, and the heating element 3 is arranged inside the rubber sleeve 2. The heating element 3 is used to heat the rubber sleeve 2 to adjust the stiffness of the rubber sleeve 2.

[0025] Specifically, the rubber sleeve 2 and outer shell 4 are both hollow cylindrical structures. The outer shell 4 is sleeved onto the outer core 1, with the rubber sleeve 2 positioned between the inner core 1 and the outer shell 4. The rubber sleeve 2 is made of rubber and can be squeezed and deformed, allowing the inner core 1 to move axially and radially relative to the outer shell 4. The inner core 1 can be connected to movable components on the vehicle chassis, such as the rocker arms and control arms of the suspension system, while the outer shell 4 can be connected to the vehicle frame. This allows the rubber sleeve 2 to effectively cushion the movement of the suspension system, thereby reducing the impact of vibration and impact on the vehicle body.

[0026] The rubber sleeve 2 is made of rubber material, and its rigidity changes at different temperatures. The heating element 3 can heat the rubber sleeve 2.

[0027] In this embodiment, the inner core 1, the rubber sleeve 2 and the outer shell 4 are sequentially arranged from the inside to the outside to achieve the shock absorption and buffering effect of an ordinary chassis bushing; and since a heating element 3 is provided inside the rubber sleeve 2, the heating element 3 can be used to heat the rubber sleeve 2, so that the rubber sleeve 2 is always maintained at a suitable temperature, thereby achieving real-time adjustment of the stiffness of the chassis bushing, so that it is always maintained at a suitable stiffness and will not become soft or hard with changes in the external ambient temperature, thereby ensuring that the vehicle always has good NVH performance and VD performance, and improving the riding comfort of the driver and passengers.

[0028] like Figure 2 As shown, optionally, the heating element 3 is an electric heating wire.

[0029] In this embodiment, the heating wire is connected to a power source via a wire. The heating wire is a metal wire that generates heat when energized. Specifically, by passing different currents through the heating wire, the heating wire can generate different amounts of heat. Specifically, when the ambient temperature is low, the current flowing through the heating wire is increased, thereby raising the temperature of the rubber sleeve 2 and reducing the impact of ambient temperature changes on the stiffness of the rubber sleeve 2, i.e., the chassis bushing, thereby ensuring the vehicle's NVH performance. When the ambient temperature is high, the current flowing through the heating wire is reduced, thereby lowering the temperature of the rubber sleeve 2 and reducing the impact of ambient temperature changes on the stiffness of the rubber sleeve 2, i.e., the chassis bushing, thereby ensuring the vehicle's VD performance.

[0030] In some other embodiments, the heating element 3 may also be a resistance heater or the like.

[0031] like Figure 2 As shown, optionally, the heating wire is arranged in a spiral shape along the circumference of the rubber sleeve 2.

[0032] In this embodiment, the heating wire is extended in a spiral shape, that is, the heating wire can be distributed relatively evenly inside the rubber sleeve 2, and only one heating wire is used. After the heating wire is energized, the rubber sleeve 2 is heated more evenly, ensuring that the stiffness changes at various locations of the rubber sleeve 2 are consistent.

[0033] In other embodiments, the heating wire may also be in other bending shapes, such as an S-shape.

[0034] like Figure 2-Figure 3 As shown, optionally, the chassis bushing further includes a temperature detection device 5 and a controller 6, wherein the controller 6 is electrically connected to the two temperature detection devices 5, one of the temperature detection devices 5 is used to detect the temperature of the rubber sleeve 2, and the other temperature detection device 5 is used to detect the ambient temperature.

[0035] In this embodiment, the temperature detection device 5 can be a temperature sensor, one of which can be embedded in the wall of the rubber sleeve 2 or attached to the wall surface of the rubber sleeve 2 to detect the temperature of the rubber sleeve 2, and the other temperature sensor can be installed at a corresponding position on the vehicle body to detect the current ambient temperature of the vehicle. The temperature sensor transmits the collected temperature signal to the controller 6, and the heating temperature of the rubber sleeve 2 is adjusted by the controller 6 to realize automatic adjustment of the stiffness of the chassis bushing. It has a high degree of intelligence and is easy to adjust, ensuring that the chassis bushing can better adapt to different driving environments.

[0036] In addition, the controller 6 can also be connected to the car camera. According to the driving road status information collected by the car camera, that is, the flatness and bumpiness of the road surface, the current flowing through the heating wire is adjusted to change the temperature of the rubber sleeve 2 and the stiffness of the chassis bushing. Specifically, when the road surface is relatively bumpy, the current of the heating wire is increased to make the rubber sleeve 2 heat up and soften, so that the chassis bushing can better buffer the vibration excitation of the road surface.

[0037] like Figure 3 As shown, optionally, the chassis bushing further includes a current detection device 7 , which is electrically connected to the controller 6 , and is used to detect the current of the heating wire.

[0038] In this embodiment, the controller 6 adjusts the heating wire current based on the signals collected by each temperature sensor, and a current detection device 7 is added to monitor the heating wire current in real time, thereby further fine-tuning the heating wire current and improving the control accuracy of the heating wire current. Here, the current detection device 7 can be a current sensor.

[0039] Optionally, the heating element 3 and the rubber sleeve 2 are vulcanized into one body.

[0040] In this embodiment, the inner core 1 and the outer shell 4 are first processed, and the outer shell 4 is sleeved on the outside of the inner core 1, and the heating element 3 is placed between the inner core 1 and the outer shell 4. Afterwards, the combination of the inner core 1, the heating element 3 and the outer shell 4 is placed in a vulcanization furnace, and rubber material is injected between the inner core 1 and the outer shell 4, and vulcanized under high temperature and high pressure. The rubber material forms a rubber sleeve 2, thereby vulcanizing the heating element 3 and the rubber sleeve 2 into one. Compared with other assembly methods of the heating element 3 and the rubber sleeve 2, the connection strength between the heating element 3 and the rubber sleeve 2 is improved without affecting the external shape of the rubber sleeve 2.

[0041] like Figure 1 As shown, optionally, a first limiting structure 11 is provided on the circumferential outer wall of the inner core 1, and a second limiting structure is provided on the circumferential inner wall of the rubber sleeve 2, and the inner core 1 is installed in cooperation with the rubber sleeve 2 through the first limiting structure 11 and the second limiting structure.

[0042] In this embodiment, one of the first limiting structure 11 and the second limiting structure is a protrusion and the other is a groove. The cooperation between the protrusion and the groove is utilized to improve the assembly stability of the inner core 1 and the rubber sleeve 2 and prevent the two from axially separating.

[0043] like Figure 1 As shown, optionally, an axial end face of the inner core 1 is provided with a limiting protrusion 12 protruding along its axial direction, and the inner core 1 is used for limiting assembly with vehicle body related components through the limiting protrusion 12.

[0044] In this embodiment, a conical stopper protrusion 12 is provided at one end of the inner core 1. The inner core 1 can be connected to relevant components of the suspension system. These components may be provided with stopper holes. The inner core 1 is inserted into the stopper holes using the stopper protrusion 12 to achieve a stoppered assembly between the inner core 1 and the suspension system. This allows the chassis bushing to be connected to the suspension system without the need for an additional connecting bracket, simplifying chassis bushing installation. Furthermore, the stopper protrusion 12 is integrally formed with the inner core 1, simplifying processing.

[0045] Another embodiment of the present invention provides a vehicle chassis comprising the aforementioned chassis bushing. The inner core 1 can be connected to movable components on the vehicle chassis, such as the rocker arms and control arms of the suspension system, while the outer shell 4 can be connected to the vehicle frame. This allows the rubber sleeve 2 to effectively cushion the movement of the suspension system, thereby reducing the impact of vibration and shock on the vehicle body. The advantages of this vehicle chassis over the prior art are the same as those of the aforementioned chassis bushing and will not be repeated here.

[0046] Another embodiment of the present invention provides a vehicle comprising the above-mentioned vehicle chassis. The advantages of the vehicle over the prior art are the same as those of the above-mentioned vehicle chassis, and thus will not be described again.

[0047] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A chassis bushing, characterized in that: The invention comprises an inner core (1), a rubber sleeve (2), a heating element (3) and an outer shell (4), wherein the rubber sleeve (2) is sleeved on the outer surface of the inner core (1), the outer shell (4) is sleeved on the outer surface of the rubber sleeve (2), and the heating element (3) is arranged inside the rubber sleeve (2). The heating element (3) is used to heat the rubber sleeve (2) to adjust the rigidity of the rubber sleeve (2).

2. The chassis bushing according to claim 1, characterized in that The heating element (3) is an electric heating wire.

3. The chassis bushing according to claim 2, characterized in that The heating wire is arranged in a spiral shape along the circumference of the rubber sleeve (2).

4. The chassis bushing according to claim 2, characterized in that It also includes a temperature detection device (5) and a controller (6), wherein the controller (6) is electrically connected to the two temperature detection devices (5), one of the temperature detection devices is used to detect the temperature of the rubber sleeve (2), and the other temperature detection device (5) is used to detect the ambient temperature.

5. The chassis bushing according to claim 4, characterized in that It also includes a current detection device (7), which is electrically connected to the controller (6) and is used to detect the current of the heating wire.

6. The chassis bushing according to claim 1, characterized in that The heating element (3) and the rubber sleeve (2) are vulcanized into one body.

7. The chassis bushing according to claim 1, characterized in that A first limiting structure (11) is provided on the circumferential outer wall of the inner core (1), and a second limiting structure is provided on the circumferential inner wall of the rubber sleeve (2). The inner core (1) is mounted in cooperation with the rubber sleeve (2) via the first limiting structure (11) and the second limiting structure.

8. The chassis bushing according to claim 1, wherein: An axial end face of the inner core (1) is provided with a limiting protrusion (12) protruding along its axial direction, and the inner core (1) is used for limiting assembly with vehicle body related components through the limiting protrusion (12).

9. A vehicle chassis, characterized in that: The invention comprises a chassis bushing according to any one of claims 1 to 8.

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

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