Damping structure and electric tailgate support rod

Abstract

The present invention relates to a damping structure and an electric tailgate support rod, wherein the damping structure comprises a clutch plate, a damping plate, an elastic component and a magnetic component. The clutch plate is used for being fixedly connected to the tail end. The damping plate is arranged between the clutch plate and the magnetic component, and the damping plate is connected to the magnetic component through the elastic component. When the magnetic component is energized, the magnetic component magnetically attracts the damping plate, the elastic component is compressed, and the damping plate and the clutch plate are separated. When the magnetic component is not energized, the elastic component pushes the damping plate to press against the clutch plate. In the process of opening or closing the tailgate, the magnetic component is energized, the damping plate and the clutch plate are separated, and the motor is not subjected to the load of the damping plate, which is beneficial to prolonging the service life of the motor. When the electric tailgate support rod is in a suspended state, the magnetic component is not energized, the damping plate presses the clutch plate and the damping plate applies force to the clutch plate, the rotating shaft is subjected to resistance, and the rotating shaft is prevented from rotating when the power is not energized, and the tailgate support rod is effectively prevented from descending and causing the tailgate to fall.

Description

Technical Field

[0001] The invention relates to the technical field of automobiles, and in particular to a damping structure and an electric tailgate support rod. Background Art

[0002] The tailgate is an important part of the car and plays an important role in protecting the passengers or cargo inside the car. The electric tailgate support rod is needed to open or close the tailgate. The existing electric tailgate suspension method is as follows: a two-way damper is added between the screw and the reduction box, but this solution has very high requirements on the wear-resistant material of the damper, and the price of the damper will be relatively expensive; and the installation process of the damper is relatively complicated, and the motor also increases the damper load, which affects its service life. Summary of the invention

[0003] Based on this, it is necessary to provide a damping structure and an electric tailgate support rod to address the above technical problems, which are beneficial to extending the service life of the motor in the electric tailgate support rod and facilitating the assembly of the damping structure.

[0004] A damping structure is used to be arranged on a motor of an electric tailgate support rod, wherein the rotating shaft of the motor comprises a head end and a tail end which are arranged opposite to each other, wherein the head end is connected to a reduction box, and the tail end is connected to the damping structure, wherein the damping structure comprises:

[0005] A clutch plate, the clutch plate being used for being fixedly connected to the tail end;

[0006] A damping plate, an elastic component and a magnetic component, wherein the damping plate is arranged between the clutch plate and the magnetic component, and the damping plate is connected to the magnetic component through the elastic component;

[0007] When the magnetic component is energized, the magnetic component magnetically attracts the damping plate, the elastic component is compressed, and the damping plate and the clutch plate are separated; when the magnetic component is not energized, the elastic component pushes the damping plate to press against the clutch plate.

[0008] The technical solution is further described below:

[0009] In one embodiment, the damping structure further includes a fixing seat, the magnetic component is disposed in the fixing seat, the tail end extends into the fixing seat, the magnetic component is disposed toward the tail end of the rotating shaft, and the damping sheet is passed through the tail end.

[0010] In one of the embodiments, a protrusion is provided at the end of the damping plate, a sliding groove is provided in the fixing seat corresponding to the protrusion, and the protrusion slides in the sliding groove.

[0011] In one embodiment, the damping sheet is a semi-metallic sheet and / or a powder metallurgy sheet, and the damping sheet is a circular or square sheet structure.

[0012] In one embodiment, the clutch sheet is a multi-composite material sheet, and the clutch sheet is a circular or square sheet structure.

[0013] In one embodiment, the magnetic component is an electromagnet, and the electromagnet is a circular, square or ring-shaped structure.

[0014] In one embodiment, the elastic component is a return spring and / or a spring, and there are multiple elastic components, which are evenly distributed between the damping plate and the magnetic component.

[0015] In one embodiment, the elastic component is in the shape of a spiral tube, one end of the elastic component is fixed to the magnetic component, and the other end of the elastic component is fixed to the damping plate.

[0016] In one embodiment, an electric tailgate support rod includes a reduction gearbox, a motor and the damping structure as described above, and two ends of the rotating shaft of the motor are respectively connected to the reduction gearbox and the damping structure.

[0017] In one embodiment, the motor includes a casing, the damping structure includes a fixed seat, a first clip is provided at one end of the casing away from the reduction gearbox, and a second clip is provided at one end of the fixed seat facing the motor, and the first clip and the second clip are snap-fitted together to connect the casing and the fixed seat.

[0018] The damping structure and the electric tailgate support rod have at least the following beneficial effects:

[0019] (1) The damping structure provided in this embodiment is arranged at one end of the motor away from the reduction gearbox. During the process of opening or closing the tailgate, the magnetic component and the motor are energized, the magnetic component magnetically attracts the damping plate, the elastic component is compressed, the damping plate and the clutch plate are separated, and the motor is not subjected to the load of the damping plate, which is beneficial to extending the service life of the motor. When the tailgate is already opened and the electric tailgate support rod is in a suspended state, the magnetic component is not energized, the elastic component pushes the damping plate to press against the clutch plate, the damping plate presses the clutch plate and the damping plate applies force to the clutch plate. Since the clutch plate is fixed on the rotating shaft, the force of the damping plate on the clutch plate is transmitted to the rotating shaft through the clutch plate, that is, the rotating shaft is subjected to resistance, which prevents the rotating shaft from rotating when it is not energized, thereby effectively preventing the rotation of the electric tailgate support rod, thereby effectively preventing the electric tailgate support rod from descending and causing the tailgate to fall.

[0020] (2) Since fewer parts are installed at the end of the motor away from the reduction gearbox, it is more convenient and quick to install or remove the damping structure here. The damping structure is installed at the end of the motor away from the reduction gearbox, that is, the damping structure, motor, and reduction gearbox are designed as a subassembly. When the damping structure needs to be repaired, only the subassembly needs to be disassembled and repaired, and the entire support rod does not need to be disassembled. Maintenance is more convenient, and the control of the subassembly is also faster and simpler.

[0021] (3) The damping structure provided in this embodiment is arranged at the tail end of the motor, so that the damping structure and the motor can be integrated into one, effectively saving the internal space of the support rod. The damping structure and the motor can also be used as an integral component in other products to improve the versatility of this integral component. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a structure in which a damping structure provided in an embodiment of the present invention is arranged at the end of a motor;

[0023] Figure 2 for Figure 1 The schematic diagram of the cross-sectional structure of the damping structure shown is along the AA line and in a non-powered state;

[0024] Figure 3 for Figure 1 The schematic cross-sectional structure diagram of the damping structure shown is along line AA and in a power-on state;

[0025] Figure 4 A schematic diagram of the structure of the damping structure provided by one embodiment of the present invention after removing the fixing seat;

[0026] Figure 5 A schematic structural diagram of a fixing seat of a damping structure provided in one embodiment of the present invention.

[0027] Explanation of the reference numerals: 100, damping structure; 110, clutch plate; 120, damping plate; 121, protrusion; 130, magnetic component; 140, fixing seat; 141, second clamping member; 142, slide groove; 200, motor; 210, housing; 211, first clamping member; 220, rotating shaft; 221, head end; 222, tail end; 300, reduction gearbox. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The various technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-described embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The present embodiment provides a damping structure 100 , which has the advantages of being conducive to prolonging the service life of the motor 200 in the electric tailgate support rod and being easy to assemble, and will be described in detail below with reference to the accompanying drawings.

[0032] In one embodiment, see Figures 1 to 3 A damping structure 100 is used to be arranged on the motor 200 of the electric tailgate support rod. The rotating shaft 220 of the motor 200 includes a head end 221 and a tail end 222 that are arranged opposite to each other. The head end 221 is connected to the reduction box 300, and the tail end 222 is connected to the damping structure 100. The damping structure 100 includes a clutch plate 110, a damping plate 120, an elastic component and a magnetic component 130. The clutch plate 110 is used to be fixedly connected to the tail end 222. The damping plate 120 is arranged between the clutch plate 110 and the magnetic component 130, and the damping plate 120 is connected to the magnetic component 130 through an elastic component. When the magnetic component 130 is energized (such as Figure 3 As shown in FIG. 1 , the magnetic component 130 magnetically attracts the damping plate 120, causing the elastic component to be compressed, and the damping plate 120 and the clutch plate 110 to separate. Figure 2 As shown in FIG. 1 , the elastic component pushes the damping plate 120 to press against the clutch plate 110 .

[0033] The working principle of the electric tailgate support rod is as follows: the electric tailgate support rod (not shown) includes a sleeve, a nut and a screw rod (not shown), the sleeve is movably connected to the vehicle body or the movable door of the vehicle tailgate, the nut is fixed in the sleeve, the first end of the screw rod is movably connected to the movable door of the vehicle tailgate or the vehicle body, and the second end of the screw rod is sleeved in the nut matched therewith. The motor 200 is connected to the reduction box 300, both of which are arranged at the first end of the screw rod, and are used to drive the screw rod to make a spiral motion in the nut to drive the vehicle tailgate to open or close. Specifically, the reduction box 300 is arranged between the screw and the motor 200, and the motor 200 and the reduction box 300 form a sub-assembly. The rotating shaft 220 of the motor 200 is connected to the gear in the reduction box 300. After the gear reduction process in the reduction box 300, the reduction box 300 drives the screw to rotate. The rotating shaft 220 of the motor 200 is connected to the screw. The motor 200 drives the screw by outputting a lower speed through the reduction box 300. The nut is fixedly connected to the sleeve. The motor 200 drives the screw to spirally move in the nut, realizing the conversion of the spiral motion of the screw into the reciprocating motion along the axial direction. The spiral motion of the screw driven by the motor 200 in the nut is then converted into the linear reciprocating motion of the second tube (not shown) in the first tube (not shown), realizing the opening and closing of the car tailgate. Among them, the first tube is sleeved on the outside of the sleeve, the second tube is sleeved on the outside of the screw and fixedly connected to the screw, and the second tube is sleeved inside the first tube.

[0034] In one embodiment, see Figure 1 and Figure 3 In the process of opening or closing the tailgate, the magnetic component 130 and the motor 200 are energized, the magnetic component 130 magnetically attracts the damping sheet 120, causing the elastic component to compress, and the damping sheet 120 approaches the magnetic component 130, so that the damping sheet 120 and the clutch sheet 110 are separated, and the damping sheet 120 will not have a strong effect on the clutch sheet 110, and the motor 200 will not be loaded by the damping sheet 120. The rotation of the rotating shaft 220 of the motor 200 drives the screw rod to rotate and finally realizes the extension or contraction of the support rod, thereby realizing the opening or closing of the tailgate. In this process, the motor 200 is not loaded by the damping sheet 120, which is conducive to extending the service life of the motor 200.

[0035] When the electric tailgate support rod is in the suspended state, the electric tailgate support rod may rotate due to the aging of its internal parts, etc., under the gravity of the tailgate, thereby driving the rotating shaft 220 of the motor 200 to rotate, causing the electric tailgate support rod to fall down, and the tailgate cannot maintain a stable open state. However, in this embodiment, please refer to Figure 1 and Figure 2When the tailgate is opened and the electric tailgate support rod is in a suspended state, the magnetic component 130 and the motor 200 are not energized, and the elastic component pushes the damping plate 120 to press against the clutch plate 110. The damping plate 120 presses the clutch plate 110 and has a strong effect on the clutch plate 110. Since the clutch plate 110 is fixed on the rotating shaft 220, the force of the damping plate 120 on the clutch plate 110 is transmitted to the rotating shaft 220 through the clutch plate 110, that is, the rotating shaft 220 is subjected to the resistance of the damping plate 120, so that the rotating shaft 220 is prevented from rotating when it is not energized, so that the screw rod and the like cannot rotate, thereby effectively preventing the movement of the electric tailgate support rod, thereby effectively preventing the electric tailgate support rod from falling and causing the tailgate to fall.

[0036] For further information, see Figure 1 Since fewer parts are arranged at the end of the motor 200 away from the reduction box 300, it is more convenient and quick to install or disassemble the damping structure 100 here. The damping structure 100 is arranged at the end of the motor 200 away from the reduction box 300, that is, the damping structure 100, the motor 200, and the reduction box 300 are designed as a sub-assembly. When the damping structure 100 needs to be repaired, only this sub-assembly needs to be repaired, which makes the maintenance more convenient, and the control of the sub-assembly is also simpler and more convenient. Moreover, the damping structure 100 provided in this embodiment is arranged at the tail end 222 of the motor 200, so that the damping structure 100 and the motor 200 can be integrated into one, effectively saving the internal space of the support rod, and the damping structure 100 and the motor 200 can also be used as an integral component in other products, thereby improving the versatility of this integral component.

[0037] In one embodiment, see Figure 1 , Figure 4 and Figure 5 The damping structure 100 also includes a fixing seat 140, in which the magnetic component 130, the damping sheet 120 and the elastic component are all arranged, and the end of the motor 200 away from the reduction box 300 is snap-connected to the fixing seat 140. The fixing seat 140 is a cylindrical shell, and an opening is provided at one end of the cylindrical shell. The end of the motor 200 is inserted into the opening and snap-connected with the fixing seat 140. In this way, it is convenient to remove or install the fixing seat 140 from the end of the motor 200, and it is also convenient to inspect the damping structure 100.

[0038] In one embodiment, see Figure 2 and Figure 3, the magnetic component 130 is arranged toward the tail end 222, and the damping plate 120 is penetrated on the tail end 222. Specifically, the tail end 222 of the rotating shaft 220 of the motor 200 extends into the fixing seat 140, the clutch plate 110 is penetrated on the tail end 222 of the rotating shaft 220 and fixed on the tail end 222, a through hole is opened in the middle of the damping plate 120, the damping plate 120 is penetrated on the tail end 222 through the through hole, and the damping plate 120 is arranged on the side of the clutch plate 110 away from the reduction box 300. The magnetic component 130 is arranged in the fixing seat 140 and the magnetic component 130 is not penetrated on the rotating shaft 220, but is arranged on the side of the damping plate 120 away from the clutch plate 110 and arranged toward the tail end 222 of the rotating shaft 220. In this way, the magnetic component 130, the damping plate 120, the clutch plate 110, etc. are assembled in the fixing seat 140. The fixing seat 140 has few parts and sufficient space. The fixing seat 140 is also very simple to install on the motor 200, which is conducive to the convenient installation or removal of the damping structure 100. When the damping structure 100 needs to be repaired, it is only necessary to remove the fixing seat 140, which is more convenient for maintenance, and the control of the damping structure 100 and the motor 200 is also simpler and more convenient.

[0039] In one embodiment, see Figures 2 to 4 , the damping sheet 120 is a metalloid sheet and / or a powder metallurgy sheet. Metalloid, also known as semimetal, is a substance between metal and nonmetal. Metalloid is an element that has the characteristics of a metal on the outside, but exhibits both metal and nonmetal properties in chemical properties. For example, arsenic and antimony are hard crystalline solids, and their appearance is obviously metal, but when chemical reactions are carried out, they exhibit two different properties of metal and nonmetal. Some of their oxides are soluble in both acid and alkali, which is called amphoteric property, because their properties are both like alkali and acid. Many elements can also form amphoteric compounds. However, only when this duality of chemical properties is very obvious and at the same time shows the appearance of a metal can such an element be called a metalloid. Metalloids are mostly semiconductors, have electrical conductivity, and their resistivity is between metal and nonmetal. The dependence of conductivity on temperature is mostly opposite to that of metals; if a metalloid is heated, its conductivity increases with temperature. Therefore, the damping sheet 120 is made of a semi-metal material, and can be better attracted by the magnetic component 130 when the magnetic component 130 is energized, that is, the attraction between the damping sheet 120 and the magnetic component 130 is stronger, and the damping sheet 120 and the clutch sheet 110 are better separated. In addition, the damping sheet 120 made of semi-metal is more wear-resistant and has a longer service life.

[0040] Powder metallurgy is an industrial technology that uses metal powder or metal powder (or a mixture of metal powder and non-metallic powder) as raw materials, and then forms and sinters them to produce metal materials, composite materials and various types of products. At present, powder metallurgy technology has been widely used in the fields of transportation, machinery, electronics, aerospace, weapons, biology, new energy, information and nuclear industry, and has become one of the most dynamic branches in new materials science. Powder metallurgy technology has a series of advantages such as significant energy saving, material saving, excellent performance, high product precision and good stability. It is very suitable for mass production and can prepare a series of high-performance non-equilibrium materials such as amorphous, microcrystals, quasicrystals, nanocrystals and supersaturated solid solutions. These materials have excellent electrical, magnetic, optical and mechanical properties. Therefore, the damping sheet 120 uses a powder metallurgy sheet, and can also be better attracted by the magnetic component 130 when the magnetic component 130 is energized, that is, the attraction between the damping sheet 120 and the magnetic component 130 is strong, and the effect of separating the damping sheet 120 and the clutch sheet 110 is better. In addition, the powder metallurgy sheet is relatively wear-resistant and has a long service life.

[0041] In one embodiment, see Figures 2 to 4 , the clutch plate 110 is a multi-component composite material sheet. The clutch plate 110 is a composite material with friction as the main function and structural performance requirements. The clutch plate 110 is required to have a sufficiently high and stable friction coefficient and good wear resistance. The clutch plate 110 mainly adopts powder metallurgy materials, asbestos-based materials and paper-based materials. The characteristics of powder metallurgy materials are as follows: the surface allowable temperature, allowable pressure, friction coefficient and life at high temperature are all high. The characteristics of asbestos-based materials are as follows: asbestos is molded with adhesives and fillers, and is consolidated on a steel or iron base plate, and the allowable working temperature is low. The paper-based material is made of asbestos, plant fibers or a mixture of the two interwoven with each other, and then filled with resin and the like. The clutch plate 110 adopts a multi-component composite material sheet, which is relatively wear-resistant and helps to extend its service life.

[0042] In one embodiment, see Figures 2 to 4 , the magnetic component 130 is an electromagnet. Specifically, an electromagnet is a device that generates electromagnetism when powered. A conductive winding that matches its power is wound around the outside of the iron core. This coil with current flowing through it has magnetism like a magnet. Electromagnets are usually made into bars or horseshoe shapes to make the iron core easier to magnetize. In addition, in order to demagnetize the electromagnet immediately when the power is turned off, we often use soft iron or silicon steel materials that demagnetize faster to make it. Such an electromagnet is magnetic when the power is turned on, and the magnetism disappears when the power is turned off.

[0043] See also Figure 3When the tailgate needs to be opened or closed, the electromagnet and the motor 200 are first powered on. After the electromagnet is powered on, a magnetic field is generated. Since the damping sheet 120 is made of a semi-metallic sheet or a powder metallurgy sheet, the damping sheet 120 is attracted by the electromagnet in the magnetic field. The electromagnet magnetically attracts the damping sheet 120, and the elastic component between the electromagnet and the damping sheet 120 is compressed, and the damping sheet 120 is close to the magnetic component 130. Since the clutch sheet 110 is fixed on the rotating shaft 220 of the motor 200, the clutch sheet 110 cannot move on the rotating shaft 220. In this way, the damping sheet 120 and the clutch sheet 110 are separated, and the damping sheet 120 will not have a strong effect on the clutch sheet 110, and the motor 200 will not be affected by the force of the damping sheet 120. The rotating shaft 220 of the motor 200 rotates normally and drives the screw rod to rotate, and finally the first tube body and the second tube body of the support rod are relative to each other, and the extension or contraction of the support rod is realized, and then the opening or closing of the tailgate is realized.

[0044] See also Figure 2 When the tailgate is opened and the electric tailgate support rod is in a suspended state, the electromagnet and the motor 200 are not energized. If the electromagnet is not energized, the electromagnet will not attract the damping plate 120 to move. The damping plate 120 is pressed against the clutch plate 110 under the elastic force of the elastic component. The damping plate 120 presses the clutch plate 110 and the damping plate 120 has a strong effect on the clutch plate 110. Because the clutch plate 110 is fixed on the rotating shaft 220, the force of the damping plate 120 on the clutch plate 110 is transmitted to the rotating shaft 220 through the clutch plate 110, that is, the rotating shaft 220 is subjected to the resistance of the damping plate 120, so that the rotating shaft 220 is prevented from rotating when it is not energized, resulting in the screw rod and the like being unable to rotate, thereby effectively preventing the activity of the electric tailgate support rod, thereby effectively preventing the electric tailgate support rod from falling and causing the tailgate to fall. Since the clutch plate 110 and the damping plate 120 are pressed together, the friction between them is relatively large, so the clutch plate 110 adopts a multi-composite material of wear-resistant material, which is conducive to ensuring the normal operation of the clutch plate 110 and ensuring that the tailgate remains in a stable open state.

[0045] See also Figure 4 Since the fixing seat 140 is a cylindrical structure, the damping plate 120 and the magnetic component 130 are both circular in shape, so it is convenient to set the damping plate 120 and the magnetic component 130 in the fixing seat 140. The clutch plate 110 is circular, which is convenient for rotating with the rotating shaft 220 when the motor 200 is powered. It can be understood that in addition to the shapes mentioned in this embodiment, the damping plate 120 and the clutch plate 110 can also be other shapes such as square, and the magnetic component 130 can also be a square or annular structure, which is not specifically limited here.

[0046] In one embodiment, the elastic component (not shown) is a return spring and / or a spring. When the elastic component is a return spring, the return spring is in a spiral tube shape, one end of the elastic component is fixed to the magnetic component 130, and the other end of the elastic component is fixed to the damping plate 120. The return spring is always in a compressed state. Figure 3 , the magnetic component 130 is an electromagnet. When the electromagnet is energized, a magnetic field is generated. In the magnetic field, the damping sheet 120 is attracted by the electromagnet. The electromagnet magnetically attracts the damping sheet 120, and the return spring between the electromagnet and the damping sheet 120 is further compressed, and the damping sheet 120 is close to the electromagnet. Figure 2 When the electromagnet is not energized, the electromagnet will not attract the damping plate 120 to move. Since the reset spring itself is in a compressed state, the reset spring exerts a force on the damping plate 120, pushing the damping plate 120 to press on the clutch plate 110. The damping plate 120 exerts force on the clutch plate 110, and then the rotating shaft 220 is subjected to the resistance of the damping plate 120, preventing the rotating shaft 220 from rotating when it is not energized, causing the screw rod and the like to be unable to rotate, thereby effectively preventing the movement of the electric tailgate support rod, thereby effectively preventing the electric tailgate support rod from falling and causing the tailgate to fall. Similarly, when the elastic component is a spring, the spring is also in a compressed state, and the change method is the same as the reset spring, which will not be repeated here. It can be understood that a plurality of elastic components can be arranged between the damping plate 120 and the magnetic component 130 to increase the elastic force of the elastic component.

[0047] In one embodiment, see Figure 4 and Figure 5, a protrusion 121 is provided at the end of the damping sheet 120, and a slide groove 142 is provided in the fixing seat 140 corresponding to the protrusion 121, and the protrusion 121 slides in the slide groove 142. Specifically, after the magnetic component 130 and the motor 200 are powered on, the magnetic component 130 generates a magnetic field after being powered on, the magnetic component 130 magnetically attracts the damping sheet 120, the elastic component between the magnetic component 130 and the damping sheet 120 is compressed, the protrusion 121 of the damping sheet 120 slides in the slide groove 142, and the damping sheet 120 moves toward the magnetic component 130. When the magnetic component 130 is not powered on, the damping sheet 120 is pressed against the clutch sheet 110 under the elastic force of the elastic component. The protrusion 121 of the damping sheet 120 is stuck in the slide groove 142, and the damping sheet 120 is also connected to the magnetic component 130 through the elastic component, that is, the damping sheet 120 can only move along the length direction of the rotating shaft 220 and cannot rotate. Since the damping plate 120 and the clutch plate 110 are both wear-resistant, the damping plate 120 has an obstructive effect on the rotation of the clutch plate 110, and thus the damping plate 120 has an obstructive effect on the rotation of the rotating shaft 220 of the motor 200. In this way, the rotating shaft 220 can be prevented from rotating when power is not supplied, so that the screw rod and the like cannot rotate, thereby effectively preventing the movement of the electric tailgate support rod, thereby effectively preventing the electric tailgate support rod from falling down and causing the tailgate to fall down.

[0048] In one embodiment, see Figure 1 An electric tailgate support rod comprises a reduction box 300, a motor 200 and a damping structure 100 as described in any of the above embodiments. The two ends of the rotating shaft 220 of the motor 200 are connected to the reduction box 300 and the damping structure 100 respectively.

[0049] Further, see Figure 4 and Figure 5 The motor 200 includes a housing 210, and the damping structure 100 includes a fixing seat 140. A first clamping member 211 is provided at one end of the housing 210 away from the reduction box 300, and a second clamping member 141 is provided at one end of the fixing seat 140 facing the motor 200. The first clamping member 211 and the second clamping member 141 are clamped and connected to connect the housing 210 and the fixing seat 140. The first clamping member 211 is a concave key provided at the end of the housing 210, and the second clamping member 141 is a convex key provided at the fixing seat 140. The shape of the convex key matches the concave key, and the convex key is clamped in the concave key to fix the housing 210 and the fixing seat 140. The damping plate 120, the magnetic component 130, etc. are integrated into the fixing base 140, and then the fixing base 140 is fixed to the end of the motor 200, so that the motor 200 and the damping structure 100 form a subassembly. When the damping structure 100 needs to be repaired, only the subassembly needs to be disassembled and repaired, and there is no need to disassemble the entire support rod. The maintenance is more convenient, and the control of the subassembly is also faster and simpler.

[0050] Furthermore, since the electric tailgate support rod includes the damping structure 100 described above, the technical effect is brought by the damping structure 100, and the beneficial effect has included the beneficial effect of the damping structure 100, so it will not be repeated here.

[0051] The damping structure 100 provided in this embodiment is disposed at one end of the motor 200 away from the reduction box 300. When the tailgate is opened or closed, the magnetic component 130 and the motor 200 are energized, the magnetic component 130 magnetically attracts the damping plate 120, the elastic component is compressed, the damping plate 120 and the clutch plate 110 are separated, and the motor 200 is not subjected to the load of the damping plate 120, which is conducive to extending the service life of the motor 200. When the tailgate is opened and the electric tailgate support rod is in a suspended state, the magnetic component 130 is not energized, and the elastic component pushes the damping plate 120 to press against the clutch plate 110. The damping plate 120 presses the clutch plate 110 and applies force to the clutch plate 110. Since the clutch plate 110 is fixed on the rotating shaft 220, the force of the damping plate 120 on the clutch plate 110 is transmitted to the rotating shaft 220 through the clutch plate 110, that is, the rotating shaft 220 is subjected to resistance, which prevents the rotating shaft 220 from rotating when it is not energized, thereby effectively preventing the electric tailgate support rod from rotating, thereby effectively preventing the electric tailgate support rod from descending and causing the tailgate to fall.

[0052] In addition, since fewer parts are arranged at the end of the motor 200 away from the reduction box 300, it is more convenient and quick to install or disassemble the damping structure 100 here. The damping structure 100 is arranged at the end of the motor 200 away from the reduction box 300, that is, the damping structure 100, the motor 200, and the reduction box 300 are designed as a sub-assembly. When the damping structure 100 needs to be repaired, only this sub-assembly needs to be disassembled and repaired, and the entire support rod does not need to be disassembled, which makes the maintenance more convenient, and the control of the sub-assembly is also faster and simpler. The damping structure 100 provided in this embodiment is arranged at the tail end 222 of the motor 200, so that the damping structure 100 and the motor 200 can be integrated into one, effectively saving the internal space of the support rod, and the damping structure 100 and the motor 200 can also be used as an integral component in other products to improve the versatility of this integral component.

[0053] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A damping structure, used to be arranged on the motor of the electric tailgate support rod, the damping structure is arranged at one end of the motor away from the reduction box, the rotating shaft of the motor includes a head end and a tail end arranged oppositely, the head end is connected to the reduction box, and the tail end is connected to the damping structure, characterized in that: The damping structure comprises: A clutch plate, the clutch plate being used for being fixedly connected to the tail end; A damping plate, an elastic component and a magnetic component, wherein the damping plate is arranged between the clutch plate and the magnetic component, and the damping plate is connected to the magnetic component through the elastic component; When the magnetic component is powered on, the magnetic component magnetically attracts the damping plate, the elastic component is compressed, and the damping plate and the clutch plate are separated; when the magnetic component is not powered on, the elastic component pushes the damping plate to press against the clutch plate; It also includes a fixing seat, the magnetic component is arranged in the fixing seat, the tail end extends into the fixing seat, the magnetic component is arranged toward the tail end of the rotating shaft, and the damping plate is passed through the tail end; a protrusion is arranged at the end of the damping plate, a sliding groove is opened in the fixing seat corresponding to the protrusion, and the protrusion slides in the sliding groove; the damping plate moves along the length direction of the rotating shaft.

2. The damping structure according to claim 1, characterized in that: The damping sheet is a semi-metal sheet and / or a powder metallurgy sheet, and the damping sheet is a circular or square sheet structure.

3. The damping structure according to claim 1, characterized in that: The clutch sheet is a multi-component composite sheet, and the clutch sheet is a circular or square sheet structure.

4. The damping structure according to claim 1, characterized in that: The magnetic component is an electromagnet, and the electromagnet is a circular, square or ring-shaped structure.

5. The damping structure according to claim 1, characterized in that: The elastic component is a return spring and / or a spring sheet, there are multiple elastic components, and the multiple elastic components are evenly distributed between the damping plate and the magnetic component.

6. The damping structure according to claim 5, characterized in that: The elastic component is in the shape of a spiral tube, one end of the elastic component is fixed on the magnetic component, and the other end of the elastic component is fixed on the damping plate.

7. An electric tailgate support rod, characterized in that: It comprises a reduction box, a motor and a damping structure as claimed in any one of claims 1 to 6, wherein two ends of a rotating shaft of the motor are respectively connected to the reduction box and the damping structure.

8. The electric tailgate support rod according to claim 7, characterized in that: The motor includes a casing, and the damping structure includes a fixing seat. A first clamping member is provided at one end of the casing away from the reduction box, and a second clamping member is provided at one end of the fixing seat facing the motor. The first clamping member and the second clamping member are snap-connected.

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