CN115800626A

CN115800626A - Magnet damper mechanism

Info

Publication number: CN115800626A
Application number: CN202211441229.XA
Authority: CN
Inventors: 周锦华; 陈建就; 龙帅
Original assignee: Guangdong Dongjian Automobile Technology Co Ltd; Guangdong Dongjian Automobile Intelligent System Co Ltd
Current assignee: Guangdong Dongjian Automobile Technology Co Ltd; Guangdong Dongjian Automobile Intelligent System Co Ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-03-14

Abstract

The invention relates to the field of automobile electric tail gate systems, and discloses a magnet damper mechanism which is used for being linked with a motor in an automobile electric tail gate system and comprises a mounting shell, a motor coupler, a soft magnetic ring, an iron ring and a strong magnetic ring, wherein the mounting shell is used for being connected with a shell of the motor, a containing groove is formed in the mounting shell, the motor coupler is fixedly connected with the shaft end of the motor, the soft magnetic ring is arranged in the containing groove, the iron ring is arranged in the containing groove through the soft magnetic ring, the strong magnetic ring is fixedly connected with the motor coupler, the iron ring is sleeved on the periphery of the strong magnetic ring, a gap is formed between the periphery wall of the strong magnetic ring and the inner peripheral wall of the iron ring, a first magnetic pole is formed on one side surface of the soft magnetic ring facing the iron ring, a second magnetic pole is formed on one side surface of the inner side of the containing groove, and the polarities of the first magnetic pole and the second magnetic pole are opposite. The invention has simple structure, simple and convenient assembly and lower cost; the torque is provided by magnetic force, and the stability of the torque can be ensured.

Description

Magnet damper mechanism

Technical Field

The invention relates to the field of automobile electric tail gate systems, in particular to a magnet damper mechanism.

Background

At present, in the field of automobile electric tail gates, a mechanical damper is used for hovering most of automobile electric tail gates at any angle, the mechanical damper commonly used in the market at present is composed of a pressure spring, a friction plate, a spline and other components, and the working principle of the mechanical damper is that the pressure spring compresses the friction plate and the spline so as to provide radial damping torque to achieve the effect of hovering; however, the conventional mechanical damper has the following drawbacks:

1. the structure is complex, the cost is high, and the assembly of the pressure spring, the friction plate and the spline is difficult;

2. because it provides the moment of torsion through friction disc and spline, easily appear the unstable defect of moment of torsion, life is shorter.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the defects of complex structure and unstable torque existing in the prior art are overcome.

In order to solve the above technical problem, the present invention provides a magnet damper mechanism for linking with a motor in an electric tailgate system of an automobile, comprising:

the mounting shell is used for being connected with a shell of the motor, and a containing slot position is formed in the mounting shell;

the motor coupler is fixedly connected with the shaft end of the motor;

the soft magnetic ring is arranged in the accommodating groove position;

the iron ring is arranged in the accommodating groove position through a soft magnetic ring; and

the strong magnetic ring is fixedly connected with the motor coupler, the iron ring is sleeved on the periphery of the strong magnetic ring, and a gap is formed between the outer peripheral wall of the strong magnetic ring and the inner peripheral wall of the iron ring;

the soft magnetic ring faces one side face of the iron ring to form a first magnetic pole, the strong magnetic ring faces one side face of the inner side of the accommodating groove to form a second magnetic pole, and the polarity of the first magnetic pole is opposite to that of the second magnetic pole.

Further preferably, the installation shell includes motor shaft coupling base and attenuator shell, motor shaft coupling base with the shell of motor is connected, the attenuator shell with motor shaft coupling base can dismantle the connection.

Further preferably, a first mounting hole is formed in the motor coupling base, and the motor coupling base penetrates through the first mounting hole through a screw to be fixedly connected with the shell at the end of the motor shaft.

Further preferably, the edge of the motor coupling base is provided with at least two limiting lugs, and the limiting lugs extend along the direction back to the motor.

Further preferably, the lower edge of the damper shell is provided with at least two limiting grooves, and the limiting grooves are connected with the limiting convex blocks in a jogged mode.

Further preferably, the limiting convex block and the damper shell are both provided with second mounting holes, and the damper shell and the limiting convex block are fixedly connected through the second mounting holes in a penetrating manner through screws.

Further preferably, the middle part of the motor coupling base is provided with an avoiding hole, and the avoiding hole corresponds to the shaft end of the motor.

Further preferably, a projection of the iron ring in the axial direction overlaps with a projection of the soft magnetic ring in the axial direction.

Further preferably, the outer diameter of the motor coupling base is equal to the outer diameter of the damper housing.

Further preferably, the motor coupling, the ferromagnetic ring, the iron ring and the soft magnetic ring are coaxially arranged.

Compared with the prior art, the magnet damper mechanism provided by the invention has the beneficial effects that:

firstly, when the iron ring is assembled, the soft magnetic ring is pressed into the accommodating groove of the mounting shell, and then the iron ring is installed into the accommodating groove by utilizing the magnetic attraction of the soft magnetic ring, so that the iron ring is convenient to install and easy to assemble, all parts are easy to machine and form, and the cost is lower;

secondly, the motor shaft drives the motor coupling to rotate by inputting power through the motor, so as to drive the strong magnetic ring to rotate, and strong attraction force is generated between the strong magnetic ring and the iron ring, so that the motor coupling generates radial torque, the size of the radial torque generated by the motor coupling can be increased or reduced by changing the inner diameter of the iron ring, the torque is provided by using magnetic force, the stability of the torque can be ensured, and the strong magnetic ring and the iron ring do not have interference actions such as contact, friction and the like, so that the strong magnetic ring or the iron ring is not easy to damage, the service life of the magnet damper mechanism is effectively prolonged, the polarities of the end surfaces of the soft magnetic ring and the strong magnetic ring which are close to each other are opposite, so that the attraction force can be generated between the soft magnetic ring and the strong magnetic ring, the radial torque generated by the motor coupling can be further enhanced, and the damping effect is improved.

Drawings

Fig. 1 is a schematic structural view of a magnet damper mechanism according to the present invention.

Fig. 2 is a schematic structural view of the housing of the present invention.

Fig. 3 is a schematic view of the internal structure of the magnet damper mechanism of the present invention.

Fig. 4 is a schematic view of an assembly of a magnet damper mechanism and a motor according to the present invention.

Fig. 5 is an exploded view of fig. 4 of the present invention.

Fig. 6 is a front view of fig. 4 of the present invention.

Fig. 7 isbase:Sub>A cross-sectional view of sectionbase:Sub>A-base:Sub>A of fig. 6 of the present invention.

In the figure, 100, a magnet damper mechanism; 110. a motor coupling base; 111. mounting holes; 112. a limiting bump; 120. a damper housing; 121. a receiving slot position; 122. a limiting groove; 130. a motor coupling; 140. a ferromagnetic ring; 150. an iron ring; 160. a soft magnetic ring;

200. an electric motor.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "back", "inner", "outer", "middle", "between", and the like, which refer to the orientation or positional relationship indicated in the drawings, are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be considered as limiting the present invention.

Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the present invention provides a magnet damper mechanism, as shown in fig. 4, the magnet damper mechanism 100 is used for cooperating with a motor 200 in an electric tailgate system of an automobile, and the magnet damper mechanism 100 is powered by the motor 200.

As shown in fig. 1, in the specific example of the present invention, the magnet damper mechanism 100 comprises a mounting shell and a motor coupler 130, specifically, the mounting shell comprises a motor coupler base 110 and a damper housing 120, wherein the motor coupler base 110 is used for connecting with a housing of the motor 200, so as to facilitate mounting the magnet damper mechanism 100 on a shaft end of the motor 200.

Specifically, referring to fig. 3, a first mounting hole 111 is formed in the motor coupling base 110, and the motor coupling base 110 can be mounted on the housing at the shaft end of the motor 200 through the first mounting hole 111 by using a bolt or a screw.

Referring to fig. 1-3, in a preferred embodiment of the present invention, the damper housing 120 is detachably connected to the motor coupling base 110, so that the magnet damper mechanism 100 and the motor 200 can be easily mounted via the detachable connection, thereby improving the mounting efficiency.

Specifically, at least two limiting bumps 112 are disposed at the edge of the motor coupling base 110, the limiting bumps 112 extend in a direction away from the motor 200, and at least two limiting grooves 122 are disposed at the lower edge of the damper housing 120, wherein preferably, the limiting bumps 112 and the limiting grooves 122 are the same in number, and preferably, two limiting grooves 122 and the limiting bumps 112 are connected in a fitting manner, wherein in order to ensure the stability of the connection between the damper housing 120 and the motor coupling base 110 and limit the revolute pair of the damper housing 120, therefore, the number of the limiting grooves 122 and the limiting bumps 112 should be more than 2, and the motor coupling base 110 can be pre-mounted on the housing at the shaft end of the motor 200 by assembling the limiting grooves 122 and the limiting bumps 112, and then the damper housing 120 is mounted, thereby facilitating the mounting of the magnet damper mechanism 100 on the motor, which is simpler and more convenient to operate, more specifically, the limiting bumps 112 and the damper housing 120 are both provided with second mounting holes, and the damper housing 120 and the limiting bumps 112 are fixedly connected by screws penetrating the second mounting holes.

With reference to fig. 2 to 3, in some examples of the present invention, the damper housing 120 is provided with an accommodating slot 121 with an upward opening, and the accommodating slot 121 is embedded with a soft magnetic ring 160 and an iron ring 150 from inside to outside, wherein the soft magnetic ring 160 can be fixed in the accommodating slot 121, so as to firmly adsorb the iron ring 150, the fixing manner can be gluing, fastening, and the like, and the polarities of the soft magnetic ring 160 and the strong magnetic ring 140 are opposite, specifically, a side surface of the soft magnetic ring 160 facing the iron ring 150 forms a first magnetic pole, a side surface of the strong magnetic ring 140 facing the inside of the accommodating slot 121 forms a second magnetic pole, and the polarities of the first magnetic pole and the second magnetic pole are opposite, so that an attractive force can be generated between the soft magnetic ring 160 and the strong magnetic ring 140, and a radial torque generated by the motor coupler 130 can be further enhanced, thereby improving a damping effect.

As shown in fig. 3, in the specific example of the present invention, a ferromagnetic ring 140 is disposed inside a ring of an iron ring 150, and a motor coupler 130 is disposed in a middle portion of the ferromagnetic ring 140, specifically, during installation, the ferromagnetic ring 140 is press-fitted and sleeved on the motor coupler 130, and then the motor coupler 130 and the ferromagnetic ring 140 are pressed into the middle portion of the iron ring 150, at this time, the motor coupler 130 is press-fitted and connected to a shaft end of a motor 200, when the motor 200 rotates, the motor coupler 130 follows a motor shaft and drives the ferromagnetic ring 140 to rotate, and during hovering of an electric tailgate of an automobile, a very strong attractive force is generated between the ferromagnetic ring 140 and the iron ring 150, so that the motor coupler 130 generates a radial torque to achieve a hovering effect.

In other examples, the inner diameter of the iron ring 150 can be changed to increase or decrease the radial torque generated by the motor coupler 130, the torque is provided by using magnetic force, the stability of the torque can be ensured, and because the strong magnetic ring 140 and the iron ring 150 do not have contact, friction and other interference actions, the damage to the strong magnetic ring 140 or the iron ring 150 is not easily caused, and the service life of the magnet damper mechanism is effectively prolonged.

In some examples of the present invention, in order to facilitate the installation of the motor coupling base 110 on the housing of the shaft end of the motor 200 without interfering with the connection between the shaft end of the motor 200 and the motor coupling 130, an avoiding hole is formed in the middle of the motor coupling base 110, and the avoiding hole is formed corresponding to the shaft end of the motor 200.

In other examples of the present invention, the projection of the iron ring 150 in the axial direction overlaps the projection of the soft magnetic ring 160 in the axial direction, so as to be installed in the accommodating slot 121, thereby preventing the soft magnetic ring 160 from interfering with the motor coupling 130, ensuring the stability of the torque, and improving the hovering effect.

In other examples of the present invention, the motor coupling 130, the strong magnetic ring 140, the iron ring 150 and the soft magnetic ring 160 are coaxially disposed, and the outer diameter of the motor coupling base 110 is equal to the outer diameter of the damper housing 120, so that the motor coupling 130 can generate a stable radial torque by not only facilitating the assembly and disassembly, but also ensuring a stable attraction force between the strong magnetic ring 140 and the iron ring 150.

The working process of the invention is as follows: referring to fig. 4-7, during assembly, the motor coupling base 110 is firstly installed on the shell at the shaft end of the motor 200, the ferromagnetic ring 140 is pressed into the motor coupling 130, the motor coupling 130 is connected with the shaft end of the motor 200, then the soft magnetic ring 160 and the iron ring 150 are pressed into the accommodating groove 121 of the damper shell 120, and finally the damper shell 120 is connected with the motor coupling base 110, so that the damper is simple in structure and convenient to assemble, and each component is easy to machine and form, and the cost is lower;

to sum up, the embodiment of the present invention provides a magnet damper mechanism, wherein power is input by a motor 200, a motor shaft drives a motor coupler 130 to rotate, so as to drive a ferromagnetic ring 140 to rotate, and a strong attractive force is generated between the ferromagnetic ring 140 and an iron ring 150, so as to enable the motor coupler 130 to generate a radial torque, the size of the radial torque generated by the motor coupler 130 can be increased or decreased by changing the inner diameter of the iron ring 150, and the torque is provided by using a magnetic force, so as to ensure the stability of the torque, and because there is no interference action such as contact, friction, etc., between the ferromagnetic ring 140 and the iron ring 150, the damage of the ferromagnetic ring 140 or the iron ring 150 is not easily caused, and the service life of the magnet damper mechanism is effectively prolonged.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention. Having thus shown and described the fundamental principles, essential features and advantages of the invention, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing preferred embodiment, and that the embodiment is to be regarded as illustrative rather than limiting, and that the scope of the invention is given by the appended claims, rather than the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A magnet damper mechanism for linking with a motor in an automotive electric tailgate system, comprising:

the motor coupler is fixedly connected with the shaft end of the motor;

the soft magnetic ring is arranged in the accommodating groove position;

the soft magnetic ring faces one side face of the iron ring to form a first magnetic pole, the ferromagnetic ring faces one side face of the inner side of the accommodating groove to form a second magnetic pole, and the polarities of the first magnetic pole and the second magnetic pole are opposite.

2. A magnet damper mechanism according to claim 1, wherein said mounting housing includes a motor coupling base and a damper housing, said motor coupling base being connected to said motor housing, said damper housing being removably connected to said motor coupling base.

3. A magnet damper mechanism as claimed in claim 2, wherein said motor shaft coupling base has a first mounting hole formed therein, said motor shaft coupling base being fixedly connected to said motor shaft end housing by a screw passing through said first mounting hole.

4. A magnet damper mechanism as claimed in claim 2, wherein at least two limit projections are provided at the edge of the motor coupling base, said limit projections extending in a direction away from said motor.

5. A magnet damper mechanism as claimed in claim 4, wherein said damper housing has at least two retaining recesses formed in a lower edge thereof, said retaining recesses being engaged with said retaining projections.

6. A magnet damper mechanism according to claim 5, wherein the limit projection and the damper housing are each provided with a second mounting hole, and the damper housing and the limit projection are fixedly connected by a screw passing through the second mounting hole.

7. A magnet damper mechanism as claimed in claim 2, wherein the motor coupling base has an avoidance hole in the middle thereof, the avoidance hole being disposed at a position corresponding to the shaft end of the motor.

8. A magnet damper mechanism as claimed in claim 1, wherein a projection of said iron ring in an axial direction overlaps a projection of said soft magnetic ring in an axial direction.

9. A magnet damper mechanism as claimed in claim 2, wherein said motor coupling base has an outer diameter equal to an outer diameter of said damper housing.

10. A magnet damper mechanism as claimed in claim 1, wherein said motor coupling, ferromagnetic ring, iron ring and soft magnetic ring are coaxially arranged.