Automobile vibration reduction magnetic ring device

Abstract

The utility model discloses an automobile vibration reduction magnetic ring device which comprises a vibration reduction magnetic ring device, an iron core ring and a magnetic core ring. An annular groove B is formed in one side of the interior of the vibration reduction magnetic ring device in a penetrating mode, an annular inserting groove A is formed in the other side of the interior of the vibration reduction magnetic ring device in a penetrating mode, a magnetic core ring is inserted into the annular inserting groove A, and an iron core ring is inserted into the annular inserting groove B. The surface of the magnetic core ring is sleeved with a rubber material to form a demagnetizing ring; and the surface of the iron core ring is sleeved with a rubber material to form the shock absorber. A novel structure and function design are used, the functions of a traditional dynamic vibration absorber and a degaussing ring are integrated, the vibration absorption function is achieved, the filtering function of the degaussing ring can be achieved, differentiated innovative products can be provided through the double-mass-block structural design, the wider suppression frequency band or the double-frequency suppression function can be obtained, and the application range is wide. Therefore, a traditional passive dynamic vibration absorber product is replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile chassis vibration reduction devices, in particular to an automobile vibration reduction magnetic ring device. Background Art

[0002] The number and types of electronic devices in new energy vehicles (EV, PHEV) have increased significantly compared to traditional vehicles, especially related power devices will use a large number of IGBT or MOS, more or less there are different degrees of electromagnetic interference. With the rapid development of new energy vehicles in the automotive industry, the problem of electromagnetic interference has become more and more prominent;

[0003] The main source of electromagnetic disturbance is the high-frequency signal generated by the frequent high-speed switching of the control system IGBT or MOS. The electromagnetic noise of the motor control power supply is mainly transmitted through the motor half-axle, resulting in the vehicle EMC (Electromagnetic Compatibility) and EMI (Electromagnetic Interferenc) performance failing to meet the requirements of relevant national laws, regulations and standards. In serious cases, it will affect the working conditions of other devices, causing functional failure and even driving safety issues.

[0004] The existing dynamic vibration absorber (damping block) only has the effect of "vibration absorption". Its principle is to suppress the vibration of the transmission half-shaft in a specific frequency range through the design of specific mass and natural frequency. The dynamic vibration absorber (damping block) does not have the function of filtering out electromagnetic interference; and the demagnetization circle of the existing technology is usually composed of filtering materials such as ferrite and nano-amorphous, and is usually arranged on the conduction path of the electromagnetic interference signal. The purpose of reducing electromagnetic interference is achieved by consuming the electromagnetic interference signal. The demagnetization circle does not have the function of suppressing vibration. Therefore, how to effectively suppress the electromagnetic interference transmitted along the half-shaft of the vehicle has become an important issue in the safety and compliance of new energy vehicles. Utility Model Content

[0005] The purpose of the utility model is to provide an automobile vibration reduction magnetic ring device, so that the shock absorber has a filtering function to filter out high-frequency signal interference. The damper can not only meet the vibration reduction function of the traditional shock absorber, but also effectively suppress the electromagnetic interference signal. It is an innovative product used in new energy vehicles to replace the traditional shock absorber.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automobile vibration-damping magnetic ring device, comprising two counterweights, an iron core ring and a magnetic core ring, characterized in that: an annular slot B is penetrated on one side of the counterweight, an annular slot A is penetrated on the other side of the counterweight, a magnetic core ring is inserted in the annular slot A, an iron core ring is inserted in the annular slot B, the surface of the iron core ring is covered with rubber material to form a vibration damper; the surface of the magnetic core ring is covered with rubber material to form a demagnetization ring; the vibration damper and the demagnetization ring are combined together to form a vibration-damping magnetic ring device; a side ring groove is provided at the middle connection between the vibration damper and the demagnetization ring.

[0007] Preferably, the iron core ring and the magnetic core ring are fixedly connected to form an integral structure via rubber.

[0008] Preferably, the cross-sections of the two counterweights, the iron core ring and the magnetic core ring are set to be polygonal structures.

[0009] Preferably, the cross-sections of the two counterweights, the iron core ring and the magnetic core ring are set to be rectangular.

[0010] Preferably, a plurality of ribs are provided around the inner surface of the vibration-damping magnetic ring device.

[0011] Preferably, the inner bottom of the vibration-damping magnetic ring device is provided with a mounting hole A for cooperating with the automobile core shaft, and the inner wall of the rib forms a mounting hole B for cooperating with the automobile core shaft. At the same time, a ring groove is provided on the outer side of the hole, which can be connected and fixed by means of but not limited to a clamp, and the mounting hole A, mounting hole B, iron core ring and magnetic core ring are coaxially arranged.

[0012] Preferably, the surfaces of the iron core ring and the magnetic core ring are covered with a rubber sleeve.

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

[0014] 1. The vibration-damping magnetic ring device in the utility model uses a new structure and functional design for the magnetic core ring and the iron core ring, integrating the functions of the traditional dynamic vibration absorber (damping block) and the demagnetizing ring, which can realize the vibration absorption function and the demagnetizing ring filtering function;

[0015] 2. The utility model provides a differentiated innovative product through a dual-mass block structure design, which can obtain a wider suppression band or a dual-frequency suppression function, thereby replacing the traditional dynamic vibration absorber (damping block) which is a typical passive product;

[0016] 3. The utility model converts high-frequency electromagnetic interference signals into heat energy for consumption through the impedance and inductance of the magnetic ring, thereby effectively suppressing the electromagnetic disturbance from continuing to be transmitted outward through the semi-axis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 The three-dimensional structure diagram of the middle iron core counterweight after cutting;

[0019] Figure 3 For this utility model Figure 2 A three-dimensional diagram of the components after separation;

[0020] Figure 4 It is an enlarged front view cutaway view of the utility model as a whole;

[0021] Figure 5 It is a top view of the utility model as a whole.

[0022] In the figure: 1. vibration-damping magnetic ring device; 2. ribs; 3. side ring groove; 4. core ring; 5. magnetic core ring; 6. ring slot B; 7. ring slot A; 8. vibration damper; 9. demagnetizing ring; 10. mounting hole A; 11. rubber sleeve; 12. mounting hole B; 13. ring groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figures 1 to 5 The utility model provides an embodiment: an automobile vibration-damping magnetic ring device, wherein the vibration-damping magnetic ring device 1 includes two counterweights, which are composed of an iron annular structure and are used to adjust the natural frequency of the magnetic ring, and form a double mass block structure with the magnetic core ring 5. An annular slot B7 is provided on one side of the interior of the vibration-damping magnetic ring device 1, and an annular slot A6 is provided on the other side. The magnetic core ring 5 is inserted in the annular slot A6, and the iron core ring 4 is inserted in the annular slot B7. The cross-sections of the magnetic core ring 5 and the iron core ring 4 are set to a ring structure of a specific shape, and the cross-sections of the iron core ring 4 and the magnetic core ring 5 are set to a polygonal structure, such as a rectangle, and can also be set to other special-shaped structures. The specific cross-sectional shape can be adjusted according to the electromagnetic compatibility requirements or the vibration-damping frequency requirements.

[0025] The material of the magnetic core ring 5 is a permanent magnet, which is used to generate inductance and impedance within a specific range. The surface of the magnetic core ring 5 is covered with rubber to form a demagnetization ring 9; the surface of the iron core ring 4 is covered with rubber to form a shock absorber 8, and the outer surfaces of the shock absorber 8 and the demagnetization ring 9 are covered with vulcanized rubber material to form an integrated structure.

[0026] The integral magnetic core ring 5 is composed of filtering materials such as ferrite or nano-amorphous material that can filter out electromagnetic disturbances of a specific frequency, and the filtering function is achieved through material selection and shape structure design.

[0027] The magnetic core ring 5 is composed of magnetic material, and the magnetic core and the iron core counterweight are fixedly connected as a whole through rubber coating. The cross-section of the two counterweights is set as a special-shaped ring structure, and the middle connection of the outer surface of the shock absorber 8 and the demagnetizing ring 9 is provided with a side ring groove 3. The specific natural frequency range and damping coefficient of the magnetic ring product are achieved through the design of rubber materials and structures to achieve the function of vibration absorption, wherein the main parameter selection of the rubber material includes elastic modulus, shear modulus, hardness, and viscoelastic properties.

[0028] A plurality of ribs 2 are provided around the inner surface of the vibration-damping magnetic ring device 1. The length, width, thickness (inner diameter) of the ribs 2 can be adjusted according to the requirements of different vibration-damping frequencies. The natural frequency range and damping coefficient can also be adjusted by changing the length, width, and thickness of the ribs 2. The mounting hole B12 and the mounting hole A10 of the overall device are used to connect and cooperate with the automobile mandrel, and are fastened by the annular groove 13 on the outer side of the mounting hole B12 in a manner other than a clamp.

[0029] The core ring 4 or the magnetic core ring 5 has different overall dimensions, diameters for matching with the half shaft, weight, and performance parameters such as inductance and impedance due to differences in application environments. The above settings enable the application of magnetic ring products to simultaneously improve the NVH performance of the vehicle and improve the EMI environment of the vehicle, reduce vehicle vibration and noise as well as sound roughness through vibration absorption, and convert electromagnetic disturbance signals into heat energy consumption through filtering, thereby reducing electromagnetic disturbance and making the vehicle's electromagnetic environment meet the requirements of relevant regulations and standards;

[0030] The surface of the vibration-damping magnetic ring device 1 is covered with a rubber sleeve 11, and the magnetic core ring 5 and the iron core ring 4 are molded and covered in the vulcanized rubber sleeve 11. The overall rubber sleeve 11 can be fixedly installed on the left and right output half-axes of the automobile through the mounting hole A10, the mounting hole B12 and the ring groove 13. It can also be designed into a single clamp or double clamp or no clamp solution according to specific boundary conditions. This makes the overall arrangement of the device applicable to be installed on the automobile drive half-axle, fixed by a clamp or no clamp form or other means, wherein the magnetic core ring 5 and the iron core ring 4 are coaxially arranged, and there is a specific spacing control in the axial direction.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A vibration-damping magnetic ring device for an automobile, comprising a vibration-damping magnetic ring device (1), an iron core ring (4) and a magnetic core ring (5), characterized in that: An annular slot B (7) is provided on one side of the interior of the vibration-damping magnetic ring device (1), and an annular slot A (6) is provided on the other side of the interior of the device (1). A magnetic core ring (5) is inserted into the annular slot A (6), and an iron core ring (4) is inserted into the annular slot B (7). The surface of the iron core ring (4) is covered with a rubber material to form a vibration damper (8); the surface of the magnetic core ring (5) is covered with a rubber material to form a demagnetizing ring (9); the vibration damper (8) and the demagnetizing ring (9) are combined to form a vibration-damping magnetic ring device; a side ring groove (3) is provided at the middle connection between the vibration damper (8) and the demagnetizing ring (9); the iron core ring (4) and the magnetic core ring (5) are fixedly connected to form an integrated structure by rubber, and a plurality of ribs (2) are provided around the inner surface of the vibration-damping magnetic ring device (1).

2. The automobile vibration-damping magnetic ring device according to claim 1, characterized in that: The cross sections of the two iron core rings (4) and the magnetic core ring (5) are set to be polygonal structures.

3. The automobile vibration-damping magnetic ring device according to claim 2, characterized in that: The cross sections of the two iron core rings (4) and the magnetic core ring (5) are set to be rectangular.

4. The automobile vibration-damping magnetic ring device according to claim 1, characterized in that: The inner bottom of the vibration-damping magnetic ring device (1) is provided with a mounting hole A (10) for cooperating with the automobile core shaft, the inner wall of the rib (2) forms a mounting hole B (12) for cooperating with the automobile core shaft, and a ring groove (13) is provided on the outer side of the mounting hole B (12) for connection and fixing in a manner that is not limited to a clamp, and the mounting hole A (10), the mounting hole B (12), the iron core ring (4) and the magnetic core ring (5) are coaxially arranged.

5. The automobile vibration-damping magnetic ring device according to claim 4, characterized in that: The surfaces of the iron core ring (4) and the magnetic core ring (5) are covered with a rubber sleeve (11).

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