Self-adaptive electromagnetic hydraulic airbag automobile shock absorber

Abstract

The invention relates to the technical field of automobile shock absorbers, and discloses a self-adaptive electromagnetic hydraulic airbag automobile shock absorber which comprises an upper cylinder, a lower cylinder arranged below the upper cylinder, a protective cloth cover arranged between the upper cylinder and the lower cylinder, and a supporting spring fixedly installed between the upper cylinder and the lower cylinder. The protective cloth sleeve is located on the inner side of the supporting spring, and the upper cylinder comprises an outer barrel. Through mutual cooperation of the upper cylinder and the lower cylinder, hydraulic damping serves as basic damping force, the height of the hydraulic piston can be adjusted through inflation and deflation of the built-in air bag, and then the interval of the hydraulic damping value is adjusted so as to adapt to different road conditions; meanwhile, in order to improve the controllability of the automobile, the electromagnetic force plays a role in finely adjusting the damping force, and fine adjustment is carried out on the basis of hydraulic damping so as to adapt to different working conditions; the self-adaptive adjustment is achieved, and the unification of'comfort 'and'controllability' can be realized; through the design of the reverse spraying pipe, the bounce problem after the wheel is instantly impacted can be effectively restrained.

Description

Technical Field

[0001] The invention relates to the technical field of automobile shock absorbers, and in particular to an adaptive electromagnetic hydraulic airbag automobile shock absorber. Background Art

[0002] Automobile shock absorber is an important part of automobile suspension system. It is mainly composed of elastic elements, shock absorber cylinder, piston, etc. Its definition is: by suppressing the shock when the spring rebounds after shock absorption and the impact from the road surface, it can improve the smoothness and comfort of automobile driving, and during the driving process of the car, it can quickly attenuate the vibration of the frame and body to maintain the stability of the vehicle driving, improve the adhesion between the tire and the ground, and ensure driving safety.

[0003] Traditional ordinary spring shock absorbers mainly rely on the elastic characteristics of the spring itself to achieve the shock absorption function. When the spring is impacted during the vehicle's driving, it can absorb energy through compression and rebound, but this shock absorption method lacks precise damping force control. The damping force of ordinary spring shock absorbers is relatively fixed and cannot be adaptive, so there are the following three defects: First, under different road conditions, it is impossible to adjust the hydraulic damping force range according to the road conditions; second, under different driving conditions, it is impossible to accurately adjust the damping force according to the vehicle's control requirements; third, when responding to sudden wheel impacts, it is impossible to effectively suppress wheel bounce. Summary of the invention

[0004] In view of the above problems existing in the existing adaptive electromagnetic hydraulic airbag automobile shock absorber, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide an electromagnetic hydraulic airbag automobile shock absorber that can adapt itself.

[0006] To solve the above technical problems, the present invention provides the following technical solution: including an upper cylinder, a lower cylinder arranged below the upper cylinder, a protective cloth cover arranged between the upper cylinder and the lower cylinder, and a support spring fixedly installed between the upper cylinder and the lower cylinder, wherein the protective cloth cover is located on the inner side of the support spring.

[0007] As a preferred solution of the adaptive electromagnetic hydraulic airbag automobile shock absorber described in the present invention, the upper cylinder includes an outer cylinder, an oil reflux cylinder arranged on the inner side of the outer cylinder, an oil cylinder arranged on the inner side of the oil reflux cylinder, a spring top plate sleeved on the outer side of the outer cylinder, and a top oil plate fixedly installed on the surface of the spring top plate.

[0008] As a preferred solution of the adaptive electromagnetic hydraulic airbag automobile shock absorber described in the present invention, the upper cylinder also includes a top sleeve arranged in the inner cavity of the top oil pan, an airbag arranged in the inner cavity of the top oil pan and sleeved on the outer surface of the oil cylinder, a piston limiter arranged at the bottom of the top sleeve, two rotating bearings arranged on the outer surface of the top oil pan, and a lower pressure plate fixedly installed on the top of the top oil pan.

[0009] As a preferred solution of the adaptive electromagnetic hydraulic airbag automobile shock absorber described in the present invention, a guide is arranged at the bottom of the oil reflux cylinder, a fixer is arranged at the bottom of the guide, and a buffer pad is arranged at the bottom of the fixer.

[0010] As a preferred solution of the adaptive electromagnetic hydraulic airbag automobile shock absorber described in the present invention, the lower cylinder includes an outer cylinder, four inner cylinders arranged in the inner cavity of the outer cylinder, an electromagnetic cylinder base fixedly installed at the bottom of the inner cavity of the outer cylinder, a connecting rod fixedly installed at the top of the electromagnetic cylinder base, and a piston fixedly installed at the end of the connecting rod.

[0011] As a preferred solution of the adaptive electromagnetic hydraulic airbag automobile shock absorber of the present invention, the end of the connecting rod extends to the inside of the oil cylinder, and the piston is located inside the oil cylinder.

[0012] As a preferred solution of the adaptive electromagnetic hydraulic airbag automobile shock absorber of the present invention, the top of the connecting rod passes through the guide, the fixer and the buffer pad respectively, and the guide is fixedly connected to the fixer.

[0013] As a preferred solution of the self-adaptive electromagnetic hydraulic airbag automobile shock absorber of the present invention, the inner cylinder is a quarter cylinder, and four inner cylinders are spliced ​​together.

[0014] As a preferred solution of the adaptive electromagnetic hydraulic airbag automobile shock absorber described in the present invention, a spring base is fixedly installed on the surface of the outer cylinder, and the bottom of the support spring is fixedly installed on the spring base.

[0015] As a preferred solution of the adaptive electromagnetic hydraulic airbag automobile shock absorber described in the present invention, a plurality of solid cylinders are fixedly installed at the bottom of the inner cavity of the outer cylinder, and electromagnetic coils are wound around the surfaces of the solid cylinders, and the ends of the solid cylinders are fixedly connected to the bottom of the inner cylinder.

[0016] The beneficial effects of the present invention are as follows: through the mutual cooperation between the upper cylinder and the lower cylinder, with hydraulic damping as the basic damping force, the height of the hydraulic piston can be adjusted by inflating and deflating the built-in airbag, and then the range of the hydraulic damping value can be adjusted to adapt to different road conditions; at the same time, in order to improve the handling of the car, the electromagnetic force plays a role in fine-tuning the damping force, and fine-tuning is performed on the basis of the hydraulic damping to adapt to different working conditions; adaptive adjustment is achieved, and the unity of "comfort" and "controllability" can be achieved; the rebound pipe design can effectively suppress the bouncing problem of the wheel after being subjected to an instantaneous impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the upper cylinder and the lower cylinder of the present invention.

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the top sleeve structure of the present invention.

[0021] Figure 5 It is a schematic diagram of the airbag structure of the present invention.

[0022] Figure 6 It is a schematic diagram of the structure of the outer cylinder, the oil return cylinder and the oil cylinder of the present invention.

[0023] Figure 7 It is a schematic diagram of the outer cylinder structure of the present invention.

[0024] Figure 8 It is a schematic diagram of the structure of the outer cylinder and the spring top plate of the present invention.

[0025] Fig. 9 It is a schematic diagram of the structure of the guide, the fixer and the buffer pad of the present invention.

[0026] Fig.10 It is a schematic diagram of the structure of the fixer of the present invention.

[0027] Fig.11 It is a schematic diagram of the structure of the outer cylinder and the inner cylinder of the present invention.

[0028] Fig.12It is a schematic diagram of the local structure of the inner cylinder of the present invention.

[0029] Fig.13 It is a schematic diagram of the local structure of the outer cylinder of the present invention.

[0030] Fig.14 It is a schematic diagram of the compression stroke structure of the present invention.

[0031] Fig.15 It is a schematic diagram of the extension stroke structure of the present invention.

[0032] Fig.16 It is a schematic diagram of the water absorption and cable channel structure of the present invention.

[0033] Fig.17 It is a schematic diagram of the inner cylinder assembly structure of the present invention.

[0034] Fig.18 It is a schematic diagram of the solid column structure of the present invention.

[0035] Fig.19 It is a schematic diagram of the magnetic pole distribution structure of the present invention.

[0036] Fig. 20 It is a schematic diagram of the magnetic force enhancement structure of the present invention.

[0037] Fig.21 It is a schematic diagram of the structure of the electromagnetic coil bin of the present invention.

[0038] Fig. 22 It is a schematic diagram of the structure of the Teflon hose of the present invention.

[0039] Fig.23 It is a structural schematic diagram of the compression stroke (not passing the middle position) of the present invention.

[0040] Fig.24 It is a schematic diagram of the structure of the extension stroke (not passing the middle position) of the present invention.

[0041] Fig.25 It is a structural schematic diagram of the compression stroke (passing the intermediate position) of the present invention.

[0042] Fig.26 It is a structural schematic diagram of the extension stroke (passing the middle position) of the present invention. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0045] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0046] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0047] Example 1 Reference Figure 1-10 , which is the first embodiment of the present invention, provides an adaptive electromagnetic hydraulic airbag automobile shock absorber, which includes an upper cylinder 100, a lower cylinder 200 arranged below the upper cylinder 100, a protective cloth cover 300 arranged between the upper cylinder 100 and the lower cylinder 200, and a supporting spring 400 fixedly installed between the upper cylinder 100 and the lower cylinder 200, and the protective cloth cover 300 is located on the inner side of the supporting spring 400.

[0048] It should be noted that, through the mutual cooperation between the upper cylinder 100 and the lower cylinder 200, the hydraulic damping is used as the basic damping force. Since the hydraulic piston has a fixed damping value according to its stroke, the problem of the shock absorber adapting to different road conditions is solved mainly by changing the hydraulic damping value range; at the same time, in order to obtain better controllability, the electromagnetic force plays a role in fine-tuning the damping force, and fine-tuning is performed on the basis of the hydraulic damping; the unity of "comfort" and "controllability" is achieved; In order to prevent external oil mud and rainwater from entering the lower cylinder 200, the protective cloth cover 300 is stretched out in the extended state and retracted in the compression stroke. The bottom of the protective cloth cover 300 is fastened with the outer cylinder 201 by a steel tie, and the top of the protective cover is fixed to the inner side of the spring top plate 104 by a steel nail; The main function of the support spring 400 is to support the weight of the vehicle and absorb impact force. The upper end of the support spring 400 is sleeved on the retaining ring of the spring top plate 104, and the lower end is sleeved on the lower cylinder spring base. An outer rubber sleeve is provided on the surface of the support spring 400 to protect the cylinder body.

[0049] Specifically, the upper cylinder 100 includes an outer cylinder 101, an oil return cylinder 102 arranged on the inner side of the outer cylinder 101, an oil cylinder 103 arranged on the inner side of the oil return cylinder 102, a spring top plate 104 sleeved on the outer side of the outer cylinder 101, and a top oil pan 105 fixedly mounted on the surface of the spring top plate 104.

[0050] The oil cylinder 103 is inserted into the top sleeve 106 and welded to the top oil pan (105). There is an oil return hole at the top of the oil cylinder 103. Below the top sleeve 106, there is a gasket valve at the return hole inside the oil cylinder 103. The gasket valve is composed of a circular gasket, bolts and nuts. There are four return holes in total. The return holes are unidirectional. When the piston 205 is in a compression stroke, the gasket blocks the return hole due to the oil pressure; when the piston 205 is in an extension stroke, the gasket is deformed by the suction of the liquid (opening the valve), and the oil in the top oil pan 105 returns to the oil cylinder 103 from the return hole to form damping (preventing the piston 205 from rebounding too quickly). The top oil pan 105 has a recoil nozzle. Since the liquid cannot be compressed, after the wheel is subjected to an instantaneous impact, there can be a recoil force to suppress the wheel from bouncing. There are damping holes on the oil cylinder 103, which are arranged at equal intervals. There are four groups of damping holes. The highest damping hole is below the joint of the top oil pan 105 and the oil cylinder 103. There is also an oil return hole at the bottom of the surface of the oil cylinder 103. There is no valve port on the piston 205 (only isolation). The oil flows back and forth through the damping hole and the oil return hole (through the oil return cylinder 102) to achieve the damping effect. By changing the height of the piston 205 position, different damping value ranges can be controlled; when the position of the piston 205 is adjusted, the range of the (hydraulic) hydraulic damping value can be adjusted; Specifically, the oil return hole is located at the bottom of the oil cylinder 103, below the piston 205 (with piston buffer rubber), and the piston buffer rubber plays a buffering role on the one hand, and prevents the piston 205 from blocking the oil return hole on the other hand; It should be noted that in the compression stroke: the piston 205 is slowly pressed upward. In the upward stroke, the damping holes are reduced one by one (the damping holes come to the rear of the piston 205), and the oil flow is reduced, so the damping increase process can be achieved. Because the damping holes are equidistant, the damping force can be equally amplified. As the piston is pressed upward, the damping holes change from four holes to three holes, gradually to two holes, and finally to one hole, and finally completely blocked (maximum damping). During the extension stroke: the piston 205 is slowly pulled down. During the pull-down stroke, the damping holes are increased one by one (the damping holes come to the front of the piston 205), and the oil flow rate increases, so the damping reduction process can be achieved. Because the damping holes are equidistant, the damping force can be reduced equally. As the piston is pulled down, the damping holes change from four holes to three holes, then gradually to two holes, then one hole, and finally all open (minimum damping). The oil return tube 102 is sleeved on the outer layer of the oil cylinder 103, and forms an interlayer (oil channel) with the oil cylinder 103. The function of the oil return tube 102 is to provide a channel for the oil to return from the damping hole to the oil return hole, and the oil returns. The bottom and top ends of 102 have thickened walls inside to fit the inner oil cylinder 103. There is a ring below the spring top plate 104, which is a retaining ring of the support spring 400, used to retain the support spring 400 so that it cannot move (move inward) and scrape against the cylinder body, affecting the electromagnetic force. The lower cylinder buffer rubber ring is located inside the retaining ring, and its function is to buffer the impact of the lower cylinder wall. The outer cylinder 101 is a cylinder, which needs to be fixed under the spring top plate 104. A positioning ring fixed on the spring top plate 104 is required. The positioning ring has two functions: one is to fix the outer cylinder 101, and the other is to drip lubricating oil into the outer cylinder 101. The positioning ring is a hollow iron ring, in the middle of which lubricating oil can flow, and there is an oil dripping hole at the bottom, which can inject lubricating oil into the inner groove of the outer cylinder 101; There are two inner grooves on the spring top plate 104, namely the water inlet groove and the wire inlet groove. The water inlet groove is where the water pipe is connected to the lubricating oil injection interface of the clamping ring, and the wire inlet groove is where the cable is connected to the outer cylinder and connected to each electromagnetic winding. The outer cylinder 101 is made of silicon steel material, and its main functions are: 1. There is an electromagnetic winding (generating electromagnetic force) in the middle of the outer cylinder 101, which interacts with the electromagnetic coil of the lower cylinder, repelling or attracting each other, and providing additional extension damping or compression damping; 2. When the electromagnetic winding generates magnetic force, it can control the viscoelasticity of the magnetic fluid, hinder the oil from flowing from the oil return cylinder 102, thereby increasing the additional hydraulic damping force. The outer layer of the outer cylinder 101 is a thin silicon steel cylinder, and its main functions are: 1. Fixing the inner electromagnetic coil, and 2. Preventing leakage of coolant; It should be noted that the upper cylinder electromagnetic winding and the lower cylinder electromagnetic coil attract or repel each other, generating a damping force, and the outer cylinder 101 will inevitably generate a large amount of heat. Therefore, the present design has lubricating oil for cooling. In addition to winding the enameled wire, the inner groove of the outer cylinder 101 also has a certain gap for the flow of lubricating oil to take away the heat generated by the coil. The inner groove (1-2 cm thick) has a gap in the middle of the inner groove for the flow of lubricating oil (after heat dissipation in the condenser and then recirculation), which can take away the heat generated by the electromagnetic coil and the heat generated by the hydraulic oil (friction). The inner groove is formed by stacking multiple silicon steel sheets vertically and then welded on the inner side of the outer cylinder 101. The enameled wire (flat wire) and the inner groove silicon steel form the electromagnetic winding; The bottom of the outer cylinder 101 is provided with a circle of oil outlet holes, and the lubricating oil flows from the inner groove of the outer cylinder 101 to the bottom, flows out through the oil outlet holes, and flows into the lower cylinder through the oil leakage gap of the fixture 112; The lower pressure plate 110 of the top oil pan 105 and the spring top plate 104 each have a steering bearing 109, which provide a steering function for the shock absorber and reduce friction. The two steering bearings 109 clamp the vehicle body like a sandwich. There is a lower pressure plate 110 at the upper end of the top oil pan 105. The lower pressure plate 110 is pressed on the frame when the shock absorber is installed. The steering bearing 109 is below the lower pressure plate 110, which, together with the steering bearing 109 of the spring top plate 104, provides a steering function for the shock absorber. The function of the lower pressure plate 110 is: when the wheel is subjected to (instantaneous) impact force, the top oil pan 105 also forms a reverse pressure on the frame under the action of the recoil nozzle. The greater the instantaneous impact force on the tire, the greater the downforce, thereby achieving the purpose of suppressing the bouncing of the vehicle body.

[0051] Furthermore, the upper cylinder 100 also includes a top sleeve 106 arranged in the inner cavity of the top oil pan 105, an air bag 107 arranged in the inner cavity of the top oil pan 105 and sleeved on the outer surface of the oil cylinder 103, a piston limiter 108 arranged at the bottom of the top sleeve 106, two rotating bearings 109 arranged on the outer surface of the top oil pan 105, and a lower pressure plate 110 fixedly installed on the top of the top oil pan 105.

[0052] The top sleeve 106 is installed on the top oil pan 105, and its functions are: first, to fix the oil sleeve 103, and second, to allow the oil to enter the top oil pan 105 through the piston 205; There is a spring inside the top sleeve 106 to hold the ball. During the compression stroke, the piston 205 compresses the oil, pushes the ball away, and the oil enters the top oil pan 105 (recoil); during the extension stroke, the spring pushes the ball to block the oil inlet hole. There are 4 back-spray pipes inside the top sleeve 106, whose function is to spray the hydraulic oil compressed by the piston 205 into the top oil pan 105 to form a recoil force. The airbag 107 is annular and stacked. Gas is filled in the airbag 107 to achieve oil-gas separation. The airbag 107 is sleeved on the oil cylinder 103 and is made of high-temperature resistant rubber. It should be noted that the damping of the hydraulic piston is a time period control, while the electromagnetic force damping is a moment control. The logic of the time period control is: the airbag 107 is inflated and deflated - (control) - the high and low position of the piston. The high and low position of the piston - (determines) - the interval of the hydraulic damping value. The logic of the moment control is: the change of the electromagnetic force of the upper cylinder and the magnitude of the current (the direction and magnitude of the electromagnetic force of the lower cylinder generally do not change) - (control) - the damping magnitude at the moment of compression and extension. Since the electromagnetic force responds quickly, this is a precise control. The airbag 107 can be increased or decreased according to actual conditions. There are two air nozzles on the top of the airbag 107, which are used for inflation and deflation (faster reaction speed) to adjust the height of the shock absorber (more air, liquid is pressed into the oil cylinder 103, and the shock absorber is increased). At the same time, the position of the piston is also adjusted to achieve the adjustment of the piston in different hydraulic damping interval values. The airbag 107 of this design has an inflation nozzle (connected to a high-pressure gas tank) and a deflation nozzle, which can realize active (according to road conditions) air replenishment and deflation. Practical application: When the vehicle perception system (camera When the vehicle detects that the road ahead is very bumpy, the high-pressure gas tank is used to replenish air to the airbag to increase the suspension height. After the suspension is raised, the spring force of the support spring 400 is reduced, and the cushioning force of the airbag 107 is increased. The shock absorbing speed and comfort of the airbag 107 are stronger than those of the shock absorbing spring. The airbag 107 is connected by multiple layers of airbags 107. The design of the multi-layer airbag 107 can disperse the force and extend the life of the airbag 107. At the same time, after the suspension is raised, the piston position moves downward, and the hydraulic damping range value increases, which can better filter small vibrations. There are several fixed springs in the top oil pan 105 to support the airbag 107 so that the airbag 107 is located at the bottom of the inner cavity of the top oil pan 105; It should be noted that the airbag 107 has a built-in pressure sensor, which can generate a corresponding electrical signal (voltage value) through changes in pressure. For example, a large voltage value indicates that the current impact force is strong, and the repulsive force is increased during the compression stroke, and the magnetic attraction force is increased during the extension stroke (to prevent the support spring 400 from rebounding too quickly). For another example, a fast frequency of voltage value changes indicates that the road is bumpy, and air is added to the airbag 107, and the airbag 107 is used to filter low vibrations and reduce the effect of the spring force. The piston limiter 108 is located at the top of the oil cylinder 103. It is composed of a spring and a piston. The piston is inserted into the spring, and the spring is fixed on the top sleeve 106. The piston cannot fit against the wall of the oil cylinder 103 to avoid hindering the flow of oil. The piston limiter 108 has three functions. One is buffering, which is used to buffer the piston 205. The second is to block the oil inlet hole of the top sleeve 106 when the piston 205 is compressed into place (to prevent the oil from entering the top oil pan 105). The third is to limit the minimum stroke of the piston 205. Limiting the minimum stroke of the piston 205 is mainly to protect the air bag 107 in the top oil pan 105 from being compressed. Although air can be compressed, there is a limit.

[0053] Preferably, a guide 111 is provided at the bottom of the oil return cylinder 102, a fixer 112 is provided at the bottom of the guide 111, and a buffer pad 113 is provided at the bottom of the fixer 112. An oil seal sleeved on the surface of the connecting rod 204 is provided at the bottom of the guide 111. The guide 111 has two functions: one is to fix the position of the oil cylinder 103 and the oil return cylinder 102 to form a sandwich layer, and the other is to fix the connecting rod 204 so that the connecting rod 204 always moves in a straight line; The holder 112 is a disc-shaped copper plate, which is fixed to the guide. The functions of the holder 112 are: first, to fix the outer cylinder 101; second, to reduce the friction between the upper and lower cylinder walls, and to act as a sliding bearing; third, there are four limit grooves on the holder 112, which serve as the convex grooves of the lower cylinder; fourth, there are four oil leakage gaps on the holder 112, so that the lubricating oil of the outer cylinder 101 can flow into the lower cylinder wall; There are several oil outlet holes at the bottom of the outer cylinder 101. The lubricating oil flowing in the outer cylinder 101 flows out from the oil outlet holes and then flows into the lower cylinder from the oil leakage gap of the fixture 112; the buffer gasket 113 is located below the fixture 112, and its material is made of high-temperature resistant rubber. The buffer gasket 113 is in a cap-like shape, and the hollow part is the position where the connecting rod 204 moves up and down. Surrounding the surface of the connecting rod 204 is a thick gasket (mainly a buffer bottom cylinder), and the outer layer is a thin gasket, which can produce deformation (without hindering the outflow of lubricating oil). Its function: similar to a brush, when the upper and lower cylinders move relative to each other, the lubricating oil is brushed onto the inner wall of the lower cylinder to lubricate the fixture 112.

[0054] When in use, when the airbag 107 is filled with more gas, the hydraulic oil is pressed into the oil cylinder 103, the piston 205 moves downward (the hydraulic damping interval value increases), the entire shock absorption increases, and the force of the support spring 400 decreases. At this time, the shock filtering effect of the airbag 107 increases, but the supporting force decreases; When the gas in the airbag 107 is reduced, the hydraulic oil is pressed back into the top oil pan 105, the piston 205 moves upward (the hydraulic damping range value decreases), the entire shock absorption decreases, and the force of the support spring 400 increases. At this time, the shock filtering effect of the airbag 107 is reduced, but the supporting force is increased.

[0055] In summary, the inflation and deflation of the airbag 107 is actively adjusted. The vehicle computer adjusts the air volume of the airbag 107 according to the road conditions, thereby realizing the control of the position of the piston 205 and the adjustment of the supporting force of the support spring 400. The position of 205 determines the size of the damping force range value. On this basis, electromagnetic force is used for adjustment according to the vehicle's requirements for control (working conditions).

[0056] Example 2 Reference Figure 11-26, which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that the lower cylinder 200 includes an outer cylinder 201, four inner cylinders 202 arranged in the inner cavity of the outer cylinder 201, an electromagnetic cylinder base 203 fixedly installed at the bottom of the inner cavity of the outer cylinder 201, a connecting rod 204 fixedly installed at the top of the electromagnetic cylinder base 203, and a piston 205 fixedly installed at the end of the connecting rod 204. The piston 205 has an oil sealant, which fits the inner wall of the oil cylinder 103, mainly to isolate the oil and form an upper and lower space. The piston 205 has no oil valve, and the flow of the oil is mainly realized through the damping hole and the oil return hole on the oil cylinder 103. When the electromagnetic winding 101 generates electromagnetic force, the viscoelasticity of the magnetic fluid in the oil return cylinder 103 can be changed, thereby changing the piston damping.

[0057] There is a buffer rubber under the piston 205, the main function of which is to prevent the piston 205 from impacting the guide 111 and causing leakage. At the same time, the piston buffer rubber cannot fit the wall of the oil cylinder 103 and block the oil return hole of the oil cylinder 103; The connecting rod 204 has three layers, the outermost layer is an anti-eddy current layer (such as silicon steel material) to prevent the generation of eddy currents, the second layer is an insulating and heat-insulating layer (such as ceramic material), the main function of which is insulation and heat insulation to prevent heat conduction, and the innermost layer is a high-strength alloy (such as stainless steel material), which is the main force-bearing component of the connecting rod 204; The outer cylinder 201 is made of aluminum (non-magnetic to prevent the shock absorber from absorbing iron objects). The spring base and the outer cylinder are integrally die-cast. The top of the outer cylinder 201 is provided with an oil scraper ring and an oil seal ring. The oil scraper ring is located above the oil seal ring. The outer cylinder 201 is divided into an upper chamber and an electromagnetic lower chamber. The upper cavity wraps the inner cylinder 202. The inner wall of the outer cylinder 201 has four sets of travel convex grooves. The travel convex grooves are engaged with the limiting grooves of the fixer 112 to prevent the outer cylinder 101 from shifting left and right. There is an oil seal ring below the oil scraper ring of the outer cylinder 201. The oil seal ring is a shock-absorbing oil seal ring. The shock-absorbing oil seal ring is made of high-temperature resistant rubber. The shock-absorbing oil seal ring has two functions: one is to prevent external oil from entering the lower cylinder, and the other is to reduce vibration and silence, and try to reduce the noise caused by the friction between the upper and lower cylinder bodies; The lower part of the outer cylinder is an electromagnetic chamber, which has an electromagnetic cylinder base 203, which is used to fix the connecting rod 204, and has four aluminum partition plates, which are used to isolate the electromagnetic coil. The bottom of the electromagnetic chamber has a liquid suction ring tube, and there are liquid suction holes on the tube, which is used to suck out the lubricating oil flowing into the bottom of the electromagnetic chamber to dissipate heat in the condenser; After the electromagnetic (coil) upper cylinder is energized, the relative movement (compression and extension) with the lower cylinder is actually the movement of cutting the magnetic flux lines. The entire outer cylinder 201 is made of aluminum material, and the alternating current that can be generated can be used to charge the battery after being rectified into direct current. The self-generated wire is connected to the electromagnetic warehouse wall. In order to prevent leakage and electric shock, a layer of anti-electric shock material (such as epoxy resin) can be sprayed on the surface of the outer cylinder 201; There is a "water suction and cable channel" at the bottom of the electromagnetic coil cavity, which has three main functions: one is to suck out the lubricating oil, the second is that the external cable of the electromagnetic coil is connected from here, and the third is that the wire of the self-generated power of the outer cylinder (aluminum) is connected from here. At the same time, there are 2 pumps, one is the lubricating oil injection pump, and the other is the lubricating oil suction pump. The power of the suction pump must always be greater than the injection pump to prevent the coolant from accumulating in the lower cylinder and affecting the compression stroke; Wear-resistant and high-temperature resistant materials (such as Teflon) are selected as the liquid suction hose to suck out the lubricating oil in the electromagnetic coil cavity (connected to the electromagnetic bin liquid suction ring tube). At the same time, two electromagnetic disk cables and two (outer cylinder 201) generating cables are wrapped in the middle. The gap position of the liquid suction hose can be used for lubricating oil, and the cable is wrapped in it. The advantages are: first, the lubricating oil can take away the heat of the cable, so that thin cables (large current) can be used, and the cables inside the hose can be protected from being broken by flying stones. Third, the wiring is simple and will not be entangled with each other during high-frequency up and down movements.

[0058] It should be noted that the inner cylinder 202 is not a whole, but is composed of four electromagnets (divided into four blocks, A, B, C, and D). The outer shape is composed of a quarter of a cylinder and a solid column at the bottom. The electromagnet material is silicon steel. There is a travel convex groove (aluminum) in the middle of each electromagnet to isolate two electromagnets from each other. The solid column at the bottom of the electromagnet is wound with an enameled wire coil to form an electromagnet. When the electromagnetic coil is energized, the entire electromagnet is magnetized to become an electromagnet. At the bottom of the inner cylinder 202, there are four groups of electromagnetic coils separated by thin aluminum plates in the middle. The directions of the currents of adjacent electromagnetic coils are different, and the upper half of the electromagnets produce different magnetic poles. Block A produces an S magnetic pole in the upper half, block B produces an N magnetic pole in the upper half, block C produces an S magnetic pole in the upper half, and block D produces an N magnetic pole in the upper half. Two adjacent electromagnets produce opposite magnetic poles, the purpose is to reduce the distance between the magnetic flux lines, thereby achieving the purpose of enhancing the magnetic force; There are multiple (e.g. 3) oil drip holes at the bottom of each electromagnet, which are used to allow lubricating oil to flow into the electromagnet lower chamber to cool the electromagnet coil.

[0059] Specifically, the end of the connecting rod 204 extends to the inside of the oil cylinder 103 , and the piston 205 is located inside the oil cylinder 103 .

[0060] Furthermore, the top of the connecting rod 204 passes through the guide 111 , the fixer 112 and the buffer pad 113 respectively, and the guide 111 is fixedly connected to the fixer 112 .

[0061] Preferably, the inner cylinder 202 is a quarter cylinder, and four inner cylinders 202 are spliced ​​together.

[0062] Furthermore, a spring base is fixedly mounted on the surface of the outer cylinder 201, and the bottom of the support spring 400 is fixedly mounted on the spring base.

[0063] It should be noted that the oil is a magnetorheological fluid.

[0064] Furthermore, a plurality of solid cylinders are fixedly installed at the bottom of the inner cavity of the outer cylinder 201 , and electromagnetic coils are wound around the surfaces of the solid cylinders, and the ends of the solid cylinders are fixedly connected to the bottom of the inner cylinder 202 .

[0065] In order to adapt to different vehicle control (working conditions) requirements, the electromagnetic damping force has the following actions: Compression stroke (not passing the middle position) - when the top of the lower cylinder has not passed the partition layer, during the compression stroke, damping is required to hinder compression to prevent the lower cylinder from compressing too quickly. This can be achieved by the repulsion of the same poles of the electromagnet. The magnetic force of the upper cylinder and the lower cylinder are in a mutually repelling state. At the same time, the magnetorheological fluid in the oil return cylinder 103 is magnetized. Function: Provide a damping force (supporting effect) to hinder the compression stroke. This damping force can be changed by increasing or decreasing the current. When maneuverability is required (such as sharp turns), increase the current to increase the electromagnetic repulsion force. When comfortable shock absorption is required, reduce the electromagnetic repulsion force. Extension stroke (not past the middle position) - the top of the lower cylinder has not passed the partition layer. During the extension stroke, damping is required to hinder the extension to prevent the lower cylinder from extending too quickly. This can be achieved by the attraction of opposite poles of the electromagnet. The magnetic force of the upper cylinder and the lower cylinder are in a state of mutual attraction. At the same time, the magnetorheological fluid in the oil return cylinder 103 is magnetized. The function is to provide a damping force (magnetic attraction) to slow down the extension. This mutually attractive damping force can be changed by increasing or decreasing the current. When it is necessary to return quickly (such as bumpy road), reduce the current and reduce the electromagnetic attraction. When it is necessary to return slowly, increase the current and increase the magnetic attraction. Compression stroke (passing the middle position) - the top of the lower cylinder moves over the partition layer. During the compression stroke, damping is required to hinder compression to prevent the lower cylinder from compressing too quickly. This can be achieved by the repulsion of the same poles of the electromagnet. The magnetic force of the upper cylinder and the lower cylinder are in a state of mutual repulsion. At the same time, the magnetorheological fluid in the oil return cylinder 103 is magnetized. Function: Provide a damping force (supporting effect) to hinder the compression stroke. This damping force can be changed by increasing or decreasing the current. When maneuverability is required (such as sharp turns), increase the current to increase the electromagnetic repulsion force. When comfortable shock absorption is required, reduce the electromagnetic repulsion force. Extension stroke (passed the middle position) - the top of the lower cylinder has passed the partition layer, and the wheel is subjected to a great impact (strong impact force). The spring begins to rebound after absorbing energy. In order to prevent the lower cylinder from extending too quickly, a damping is needed to slow down the extension. At this time, it can be achieved through the attraction of like-sex electromagnets. Similarly, the upper and lower layers of electromagnetic coils of the upper cylinder are energized at the same time to increase the magnetic attraction. The magnetic force of the upper cylinder and the lower cylinder are in a state of mutual attraction. At the same time, the magnetorheological fluid in the oil return cylinder 103 is magnetized. The function is to provide a damping force (magnetic attraction) to slow down the extension. This mutually attractive damping force can be changed by increasing or decreasing the current. When a rapid return is required (such as bumpy road conditions), reduce the current and reduce the electromagnetic attraction. When a slow return is required, increase the current and increase the magnetic attraction.

[0066] In summary, the electromagnetic force can be adapted according to the vehicle's control requirements (working conditions). When the vehicle's shock absorber needs support, the upper and lower cylinders generate mutually repelling electromagnetic forces and change the viscoelasticity of the magnetic fluid; when the vehicle's shock absorber spring needs to be released slowly, the upper and lower cylinders generate mutually attractive electromagnetic forces and change the viscoelasticity of the magnetic fluid, and the magnitude of the electromagnetic force can be adjusted by the current. Since the electromagnetic damping force can be generated instantaneously and can be precisely controlled, from the perspective of energy saving, the electromagnetic damping force is generated on demand according to the vehicle condition.

[0067] From the design, we can know that in order to adapt to different road conditions, this design changes the position of the piston to achieve different hydraulic damping interval values. In order to adapt to different working conditions of the vehicle, this design achieves precise adjustment of the shock absorber damping through the control of electromagnetic force. At the same time, the anti-spray pipe can offset the instantaneous impact on the wheel, thereby suppressing wheel bounce.

[0068] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims. In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiment (i.e., those features that are not relevant to the best mode currently contemplated for carrying out the invention, or those features that are not relevant to implementing the invention) may be described.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An adaptive electromagnetic hydraulic airbag automobile shock absorber, characterized in that: The invention comprises an upper cylinder (100), a lower cylinder (200) arranged below the upper cylinder (100), a protective cloth cover (300) arranged between the upper cylinder (100) and the lower cylinder (200), and a support spring (400) fixedly installed between the upper cylinder (100) and the lower cylinder (200), wherein the protective cloth cover (300) is located on the inner side of the support spring (400).

2. The self-adaptable electromagnetic hydraulic airbag automobile shock absorber according to claim 1 is characterized in that: The upper cylinder (100) comprises an outer cylinder (101), an oil return cylinder (102) arranged inside the outer cylinder (101), an oil cylinder (103) arranged inside the oil return cylinder (102), a spring top plate (104) sleeved on the outside of the outer cylinder (101), and a top oil plate (105) fixedly mounted on the surface of the spring top plate (104).

3. The self-adaptable electromagnetic hydraulic airbag automobile shock absorber according to claim 2 is characterized in that: The upper cylinder (100) further comprises a top sleeve (106) arranged in the inner cavity of the top oil pan (105), an air bag (107) arranged in the inner cavity of the top oil pan (105) and sleeved on the outer surface of the oil cylinder (103), a piston limiter (108) arranged at the bottom of the top sleeve (106), two rotating bearings (109) arranged on the outer surface of the top oil pan (105), and a lower pressure plate (110) fixedly mounted on the top of the top oil pan (105).

4. The self-adaptable electromagnetic hydraulic airbag automobile shock absorber according to claim 3 is characterized in that: A guide (111) is provided at the bottom of the oil return cylinder (102), a fixer (112) is provided at the bottom of the guide (111), and a buffer pad (113) is provided at the bottom of the fixer (112).

5. The self-adaptable electromagnetic hydraulic airbag automobile shock absorber according to claim 4 is characterized in that: The lower cylinder (200) comprises an outer cylinder (201), four inner cylinders (202) arranged in the inner cavity of the outer cylinder (201), an electromagnetic cylinder base (203) fixedly mounted on the bottom of the inner cavity of the outer cylinder (201), a connecting rod (204) fixedly mounted on the top of the electromagnetic cylinder base (203), and a piston (205) fixedly mounted on the end of the connecting rod (204).

6. The self-adaptable electromagnetic hydraulic airbag automobile shock absorber according to claim 5, characterized in that: The end of the connecting rod (204) extends to the inside of the oil cylinder (103), and the piston (205) is located inside the oil cylinder (103).

7. The self-adaptable electromagnetic hydraulic airbag automobile shock absorber according to claim 6 is characterized in that: The top of the connecting rod (204) passes through the guide (111), the fixer (112) and the buffer pad (113) respectively, and the guide (111) is fixedly connected to the fixer (112).

8. The self-adaptable electromagnetic hydraulic airbag automobile shock absorber according to claim 7 is characterized in that: The inner cylinder (202) is a quarter cylinder, and is formed by four inner cylinders (202) being spliced ​​together.

9. The self-adaptable electromagnetic hydraulic airbag automobile shock absorber according to claim 8, characterized in that: A spring base is fixedly mounted on the surface of the outer cylinder (201), and the bottom of the support spring (400) is fixedly mounted on the spring base.

10. The self-adaptable electromagnetic hydraulic airbag automobile shock absorber according to claim 9, characterized in that: A plurality of solid columns are fixedly mounted on the bottom of the inner cavity of the outer cylinder (201), and electromagnetic coils are wound around the surfaces of the solid columns. The ends of the solid columns are fixedly connected to the bottom of the inner cylinder (202).

Images