Novel magnetic ring resonance block

Abstract

The invention provides a novel magnetic ring resonance block which comprises a shell, a mounting hole is formed in the shell, the shell is of a vulcanized rubber sleeve structure and comprises an end, a balance weight end and a resonance inductor end, the end is connected to one side of the resonance inductor end, and the balance weight end is connected to the other side of the resonance inductor end; a magnetic core is arranged in the resonant inductor end and is of an annular structure, the end, the balance weight end and the magnetic core are all concentric with the mounting hole, a limiting groove is formed in the outer wall of the end, the end, the balance weight end and the resonant inductor end are integrally formed, and the mounting hole penetrates through the center of the end, the center of the balance weight end and the center of the resonant inductor end. The vulcanized rubber structure serves as the shell, the balance weight end and the resonance inductor end are wrapped at the same time, the structure is compact, the preparation cost is effectively reduced, meanwhile, a traditional shock absorber and a filter are combined, and the shock absorber becomes a new product applied to a new energy automobile to replace the traditional shock absorber.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile and parts manufacturing, in particular to a novel magnetic ring resonance block. Background Art

[0002] Given that the current occupancy rate of new energy vehicles is increasing year by year, and the fact that the propagation path of electromagnetic interference on the half-axle of a car is mainly the principle of common-mode signals transmitted along the half-axle. At the same time, with the rapid development of the automotive industry, users have increasingly higher requirements for NVH performance. The resonant block is an important technical means for improving the NVH performance of the entire vehicle during the research and development of automobiles. In related technologies, the resonant block is mounted on the half-axle, and during the debugging and matching test of the half-axle resonant block, it is necessary to produce resonant blocks with different positions, different weights, and multiple states. During the development, debugging, and matching process, they need to be constantly replaced, resulting in a long development cycle and the inability to achieve a universal design of the resonant block.

[0003] Publication number "CN210068858U" provides a resonant block assembly and a vehicle equipped with the resonant block assembly. The resonant block assembly includes a first bracket and a second bracket that are docked together for sleeved onto the outer wall of the vehicle's half-axle, a first connector and a second connector that are vulcanized and fixed to the first bracket and the second bracket, respectively, and a counterweight secured to the first connector and the second connector. The counterweight is integrated and fixed to the first bracket and the second bracket via the first connector and the second connector, respectively. That is, the counterweight is fixed to the outer wall of the vehicle's half-axle by a radial docking method. During the debugging of the vehicle's NVH performance, the installation position of the resonant block assembly can be flexibly changed, and counterweights of different weights can be replaced, thereby improving work efficiency and saving development time and costs.

[0004] However, the above device still has the following problems during implementation:

[0005] With the development of new energy vehicles, the high-frequency signals generated by the high-speed switching of IGBTs in the control system have become the main source of electromagnetic interference, and the electromagnetic interference problems brought about by them have become increasingly prominent. Summary of the Invention

[0006] The object of the present invention is to provide a novel magnetic ring resonant block to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A novel magnetic ring resonant block includes a shell with a mounting hole formed therein. The shell is a vulcanized rubber sleeve structure. The shell includes an end, a counterweight end, and a resonant inductor end. The end is connected to one side of the resonant inductor end, and the counterweight end is connected to the other side of the resonant inductor end.

[0009] A magnetic core is provided in the resonant inductor end. The magnetic core is provided in a ring structure. The end head, the counterweight end and the magnetic core are all provided concentrically with the mounting hole. A limiting groove is provided on the outer wall of the end head.

[0010] Preferably, the end head, the counterweight end and the resonant inductor end are integrally formed, and the mounting hole is provided through the center of the end head, the counterweight end and the resonant inductor end.

[0011] Preferably, a spacing groove is provided on the outer wall of the shell between the counterweight end and the resonant inductor end, and the inner concave portion of the spacing groove is an arc-shaped groove structure.

[0012] Preferably, the counterweight end includes a second cavity and a counterweight block disposed in the second cavity, and the counterweight block is an annular block structure.

[0013] Preferably, the resonant inductor end includes a first cavity and a magnetic core arranged in the first cavity, and the magnetic core is a ring block structure.

[0014] Preferably, the first cavity and the second cavity are both opened in the shell, and the first cavity and the second cavity are both configured as annular cavity structures.

[0015] Preferably, the outer wall of the shell is provided with structural notches at four corners of the first cavity and the second cavity respectively.

[0016] Preferably, a stepped hole is provided inside the end head, the inner diameter of the stepped hole is smaller than the inner diameter of the mounting hole, and a groove is provided in an annular manner at one end of the mounting hole away from the end head.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention adds a magnetic ring to the traditional vibration absorber to enhance its filtering function, ensuring that the magnetic ring resonant block can not only meet the vibration reduction function of the traditional vibration absorber, but also effectively suppress electromagnetic interference signals;

[0019] 2. The present invention uses a vulcanized rubber structure as a shell, which simultaneously wraps the counterweight end and the resonant inductor end. The structure is compact, which effectively reduces the preparation cost. At the same time, it combines the traditional shock absorber and the filter to become a new product used in new energy vehicles to replace the traditional shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the resonance block of the present invention;

[0021] Figure 2 is a schematic cross-sectional structural diagram of the resonance block of the present invention;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the resonance block of the present invention;

[0023] Figure 4 This is the EMC test diagram of the traditional resonant block of the present invention;

[0024] Figure 5 This is the EMC test diagram of the new resonance block of the present invention.

[0025] In the figure: 1. Shell; 2. End; 3. Limiting groove; 4. Counterweight end; 5. Spacing groove; 6. Resonant inductor end; 7. Mounting hole; 8. Groove; 9. First cavity; 10. Second cavity; 11. Counterweight block; 12. Magnetic core; 13. Structural notch; 14. Step hole. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-5 , the present invention provides a technical solution: a new magnetic ring resonant block,

[0028] Example 1:

[0029] The new magnetic ring resonant block includes a shell 1, which has a mounting hole 7. The shell 1 is a vulcanized rubber sleeve structure. The shell 1 includes an end 2, a counterweight end 4 and a resonant inductor end 6. The end 2 is connected to one side of the resonant inductor end 6, and the counterweight end 4 is connected to the other side of the resonant inductor end 6. A magnetic core 12 is provided in the resonant inductor end 6. The magnetic core 12 is arranged in a ring structure, and the end 2, the counterweight end 4 and the magnetic core 12 are all concentrically arranged with the mounting hole 7. The end 2, the counterweight end 4 and the resonant inductor end 6 are integrally formed, and the mounting hole 7 is opened through the center position of the end 2, the counterweight end 4 and the resonant inductor end 6.

[0030] In this embodiment, the novel magnetic ring resonant block provided by the present invention integrates a shell 1, a counterweight end 4 and a resonant inductor end 6. The counterweight end 4 and the resonant inductor end 6 are wrapped in the shell 1 of a vulcanized rubber structure. At the same time, the end 2, the counterweight end 4 and the resonant inductor end 6 are coaxially arranged. The entire magnetic ring resonant block is used to be installed on the surface of a car's half-axle.

[0031] A magnetic core 12 is provided in the resonant inductor end 6, which can convert the radiated electromagnetic energy into heat energy or other forms of energy through the electromagnetic effect, so as to reduce the electromagnetic radiation of the whole vehicle and meet the EMC electromagnetic compatibility requirements; at the same time, the magnetic core 12 itself has a certain mass, and a counterweight block 11 is provided. When conducting production tests, it is necessary to adjust the mass of the counterweight block 11 to obtain the frequency of the magnetic ring resonant block to avoid resonance between the vehicle half-axle and the whole vehicle, and meet the NVH requirements through frequency modulation.

[0032] It should be noted that the resonant block assembly provided in this embodiment has a compact structure, which can effectively solve the layout problem. In other words, the new magnetic ring resonant block can not only optimize NVH performance but also reduce electromagnetic radiation, thereby optimizing vehicle performance.

[0033] A limiting groove 3 is provided on the outer wall of the end 2 .

[0034] In this embodiment, the limiting groove 3 is a clamp groove, and the magnetic ring resonant block is positioned in the axial direction at the installation position by the clamp cooperating with the clamp groove. At the same time, the clamp is clamped to fix the resonant block assembly on the surface of the automobile half shaft.

[0035] A spacing groove 5 is provided on the outer wall of the housing 1 between the counterweight end 4 and the resonant inductor end 6 , and the inner concave portion of the spacing groove 5 is an arc-shaped groove structure.

[0036] In this embodiment, a spacing groove 5 is provided on the surface of the shell 1, and the spacing groove 5 is located between the counterweight end 4 and the resonant inductor end 6. At the same time, the spacing groove 5 is configured as an annular groove, and the center line of the opening of the spacing groove 5 coincides with the center line of the mounting hole 7. Since the magnetic core 12 provided in the resonant inductor end 6 has a low density and is relatively brittle, in this embodiment, the shell 1 is made of fluidized rubber to respectively wrap the counterweight 11 and the magnetic core 12, that is, the counterweight 11 and the magnetic core 12 are separated by vulcanized rubber, thereby preventing the counterweight 11 and the magnetic core 12 from being subjected to mutual force and causing damage to the magnetic core 12; therefore, a spacing groove 5 is provided inside the shell 1, and the spacing groove 5 can divide the shell 1 into two separate cavities, a first cavity 9 and a second cavity 10, to respectively wrap and isolate the counterweight 11 and the magnetic core 12.

[0037] The counterweight end 4 includes a second cavity 10 and a counterweight block 11 disposed in the second cavity 10 . The counterweight block 11 is an annular block structure.

[0038] In this embodiment, although the counterweight block 11 is set to a ring block structure, the inner diameter of the counterweight block 11 is larger than the outer diameter of the automobile half-axle. It is necessary to avoid contact between the counterweight block 11 and the drive shaft to prevent damage to the counterweight block 11 due to stress during movement, ensure that the automobile half-axle carrying the resonance block is subjected to more uniform force, and better optimize the NVH performance.

[0039] It should be noted that the counterweight 11 is used to ensure the mass balance of the magnetic core 12 , so any material that can achieve mass balance can be selected, preferably 20# steel or steel similar to 20# steel.

[0040] The resonant inductor terminal 6 includes a first cavity 9 and a magnetic core 12 disposed within the first cavity 9. The magnetic core 12 is a ring-shaped block structure. The magnetic core 12 is capable of converting electromagnetic energy into other forms of energy. Therefore, the resonant inductor terminal 6 is not limited to the characteristic magnetic core 12, but is preferably only a magnetic core 12. Furthermore, embedding the magnetic core 12 within the housing 1 prevents direct contact between the magnetic ring and the vehicle axle, preventing the magnetic ring from breaking due to stress during movement. This optimizes NVH performance and effectively suppresses electromagnetic interference signals.

[0041] It should be noted that the key parameters of magnetic ring products are filtering performance and natural frequency parameters. Filtering performance, which includes the inductance and impedance characteristics of the magnetic ring, is an important indicator for meeting EMC performance; natural frequency parameters are important for meeting NVH requirements.

[0042] The first cavity 9 and the second cavity 10 are both formed in the housing 1 and are annular. Structural notches 13 are formed on the outer wall of the housing 1 at the four corners of the first cavity 9 and the second cavity 10.

[0043] In this embodiment, a first cavity 9 and a second cavity 10 are respectively opened in the shell 1, and the counterweight 11 and the magnetic core 12 are respectively embedded in the shell 1 using the annular groove-shaped cavity. At the same time, structural notches 13 are opened on the four corners of the first cavity 9 and the second cavity 10 on the outer wall of the shell 1, and the structural notches 13 are used to provide a buffering and shock-absorbing effect on the vulcanized rubber structure shell 1.

[0044] A groove 8 is formed in an annular manner in the mounting hole 7 at one end away from the end head 2 .

[0045] In this embodiment, the inner part of the mounting hole 7, that is, the inner wall of the shell 1, is provided with an annular equidistant array of grooves 8, and the grooves 8 are arranged in a strip groove structure. The grooves 8 are used to create a reasonable gap between the mounting hole 7 and the outer wall of the automobile half-shaft, thereby reducing the contact area between the inner wall of the shell 1 and the automobile half-shaft. Not only will it not affect the stability of the fixed structure between the resonant block and the automobile half-shaft, but the grooves 8 can also effectively prevent the counterweight block 11 and the magnetic core 12 from being subjected to the impact force between the outer wall of the automobile half-shaft due to the action of external force during the transmission process, thereby effectively preventing the failure of the function of the new magnetic ring resonant block provided by the present invention.

[0046] Example 2:

[0047] A stepped hole 14 is formed inside the end head 2 , and the inner diameter of the stepped hole 14 is smaller than the inner diameter of the mounting hole 7 .

[0048] In this embodiment, a group of stepped holes 14 with an inner diameter smaller than the mounting hole 7 are opened inside the end head 2 to match automobile axles of different specifications and to limit the axial position of the resonant block on the automobile axle.

[0049] It should be noted that the parameters of the new magnetic ring resonant block proposed in the present invention are as follows:

[0050] Impedance: Z1 ≥ 100Ω, Z2 ≥ 110Ω, Z3 ≥ 120Ω (f1 = 15Mhz, f2 = 18Mhz, f3 = 30Mhz), test coil 0.55mm*1T (150mm), test voltage 0.5V, test temperature 25°C;

[0051] Inductance: L = 720 ± 25% μH, test frequency 1 kHz, test voltage 0.25 V, test coil φ 0.35 mm, N = 10 Ts, test voltage 0.25 V;

[0052] The natural frequency of the magnetic ring assembly is 350±30 Hz; the test sweep frequency range is 50-900 Hz, and the sweep speed is 240 Hz / min;

[0053] Excitation acceleration 10m / s (test shaft diameter 26.2);

[0054] Rubber material hardness 40-60ShA, strength ≥11Mpa, elongation ≥300%;

[0055] It should be noted that, for devices or equipment that can be implemented using existing technologies, their power supply, specific composition and principles are clear to those skilled in the art, so they will not be described in detail.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A novel magnetic ring resonant block, comprising a housing (1), wherein a mounting hole (7) is provided in the housing (1), and characterized in that: The housing (1) is a vulcanized rubber sleeve structure, and the housing (1) comprises an end (2), a counterweight end (4), and a resonant inductor end (6), wherein the end (2) is connected to one side of the resonant inductor end (6), and the counterweight end (4) is connected to the other side of the resonant inductor end (6); A magnetic core (12) is provided in the resonant inductor end (6), the magnetic core (12) is provided in an annular structure, and the end head (2), the counterweight end (4) and the magnetic core (12) are all provided concentrically with the mounting hole (7), and a limiting groove (3) is provided on the outer wall of the end head (2).

2. The novel magnetic ring resonant block according to claim 1, characterized in that: The end head (2), the counterweight end (4) and the resonant inductor end (6) are integrally formed, and the mounting hole (7) is opened through the center of the end head (2), the counterweight end (4) and the resonant inductor end (6).

3. The novel magnetic ring resonant block according to claim 1, characterized in that: A spacing groove (5) is provided on the outer wall of the housing (1) between the counterweight end (4) and the resonant inductor end (6), and the inner concave portion of the spacing groove (5) is an arc-shaped groove structure.

4. The novel magnetic ring resonant block according to claim 1, characterized in that: The counterweight end (4) comprises a second cavity (10) and a counterweight block (11) arranged in the second cavity (10); the counterweight block (11) is an annular block structure.

5. The novel magnetic ring resonant block according to claim 4, characterized in that: The resonant inductor end (6) comprises a first cavity (9) and a magnetic core (12) arranged in the first cavity (9), and the magnetic core (12) is a ring block structure.

6. The novel magnetic ring resonant block according to claim 5, characterized in that: The first cavity (9) and the second cavity (10) are both opened in the housing (1), and the first cavity (9) and the second cavity (10) are both configured as annular cavity structures.

7. The novel magnetic ring resonant block according to claim 6, characterized in that: The outer wall of the shell (1) is provided with structural notches (13) at four corners of the first cavity (9) and the second cavity (10).

8. The novel magnetic ring resonant block according to claim 7, characterized in that: A stepped hole (14) is provided inside the end head (2), the inner diameter of the stepped hole (14) is smaller than the inner diameter of the mounting hole (7), and a groove (8) is provided in an annular manner at one end of the mounting hole (7) away from the end head (2).

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