Gas-liquid combined type shock absorber

Abstract

The invention discloses a gas-liquid combined type shock absorber, and relates to the technical field of shock absorbers. The problems that in the prior art, a traditional suspension of an automobile is composed of a shock absorber and a spring, the spring is a steel spring, the rigidity of the spring is initially designed and cannot be adjusted after production, and the comfort of a driver and passengers under different road conditions can be seriously affected due to the fact that the rigidity of the spring cannot be adjusted are solved. The device comprises an energy storage device and a piston body, a piston rod is arranged in the piston cavity wall of the piston body, piston cavities are formed in the piston cavity wall, and each piston cavity is divided into an upper piston cavity and a lower piston cavity through a damping piston at one end of the piston rod. The piston upper cavity is communicated with the energy accumulator, and the damping piston is a piston with a damping function; the energy storage device comprises an energy storage device cavity and a deformable gas storage chamber; and the energy accumulator is arranged on the outer side or the end part of the piston cavity wall.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle shock absorbers, and in particular to a gas-liquid composite shock absorber. Background Art

[0002] At present, the weight of new energy vehicles is gradually increasing due to the increase in cruising range and the weight of batteries. The inertia force during driving is also increasing due to the weight of the vehicle. This leads to the following problems. For example, when turning, the centrifugal force and inertia force will increase, which will directly affect the driving experience and safety. For example, when passing through bumpy roads, the body of the vehicle will vibrate violently, which will directly affect the comfort of the driver and passengers. How to adjust the body posture in a timely and fast manner to ensure the safety and comfort of the driver and passengers is particularly important.

[0003] Shock absorbers are mainly used to suppress the shock when the spring rebounds after absorbing shock, and the damping of the shock absorber is an important parameter to control its working resistance. Most of the dampers of traditional shock absorbers cannot adjust the damping force. Although the modified shock absorbers on the market can adjust the damping force, it is extremely inconvenient to adjust the damping when the vehicle is stationary. If you want to adjust the damping on the muddy ground, it will be a worse user experience. Due to the complex and changeable road conditions, the corresponding damping value also needs to be adjusted to better meet the comfort needs of drivers and passengers. The dampers of traditional shock absorbers cannot be electronically controlled or intelligently adjusted at any time according to road conditions or emergencies while the vehicle is driving. They lack flexibility and are extremely inconvenient to use. Therefore, the dampers of shock absorbers need to develop in the direction of electrification and intelligent control, so as to realize the active control and intelligent control of shock absorbers. Summary of the invention

[0004] The purpose of the present invention is to solve the problems mentioned in the above background technology, and further to provide a gas-liquid composite shock absorber that can actively control the damping of the shock absorber, thereby realizing active and intelligent control of the shock absorber, and ensuring the safety and comfort of the driver and passengers by adjusting the body posture.

[0005] The technical solution adopted by the present invention to solve the above problems is: a gas-liquid composite shock absorber, the shock absorber includes an energy accumulator and a piston body; a piston rod is arranged inside the piston cavity wall of the piston body, the interior of the piston cavity wall is a piston cavity, the piston cavity is divided into an upper piston chamber and a lower piston chamber by a damping piston at one end of the piston rod, and the upper piston chamber is connected to the energy accumulator; the damping piston is a piston with a damping function;

[0006] The energy storage device comprises an energy storage chamber and a deformable gas storage chamber;

[0007] The energy accumulator is arranged on the outside of the piston cavity wall; or the energy accumulator is arranged at the end of the piston cavity wall.

[0008] Furthermore, the oil space formed between the upper chamber of the piston and the accumulator is an upper oil chamber, and the upper chamber of the piston is connected to the upper oil chamber through an oil hole; or the upper chamber of the piston and the first accumulator are directly connected through the oil hole.

[0009] Furthermore, the deformable gas storage chamber is arranged inside the energy accumulator chamber, and the energy accumulator chamber is a chamber surrounded by an energy accumulator outer wall, an energy accumulator inner wall, an energy accumulator upper wall and an energy accumulator lower wall.

[0010] Furthermore, a plurality of accumulator oil grooves are evenly arranged on the circumference of one side of the outer wall of the accumulator or the inner wall of the accumulator close to the deformable gas storage chamber, and a plurality of accumulator oil passages are evenly arranged on the circumference of the upper wall of the accumulator, and the accumulator oil passages are connected to the corresponding accumulator oil grooves;

[0011] Or the energy accumulator chamber is provided with an energy accumulator oil partition, and the energy accumulator oil partition is provided with a plurality of energy accumulator oil holes;

[0012] Alternatively, a first energy accumulator oil passage groove and a first energy accumulator oil passage partition are simultaneously provided inside the first energy accumulator chamber.

[0013] Furthermore, the shock absorber also includes a damper; a damper is arranged inside the oil space formed by the upper chamber of the piston and the energy accumulator, the oil space of the upper chamber of the piston, and the oil space of the energy accumulator, so that the oil flows through the damper; or a damper is arranged in the damping piston, so that the oil flows through the damper; or a damper is arranged inside the oil space formed by the upper chamber of the piston and the energy accumulator, the oil space of the upper chamber of the piston, and the oil space of the energy accumulator, so that the oil flows through the damper, and a damper is also arranged in the damping piston, so that the oil flows through the damper.

[0014] Furthermore, one end of the piston rod located inside the piston cavity is connected to a damping piston, and the other end extending out of the piston cavity is provided with a fixed end, and a piston ring is installed on the damping piston.

[0015] Furthermore, the shock absorber also includes an auxiliary and sealing structure, which includes a lower end cover, a sealing rubber sleeve, a lower end cover of the sealing rubber sleeve, an upper end cover, and an oil inlet and outlet; a sealing oil seal and a dustproof oil seal are arranged in the lower end cover; the lower end cover is arranged at the lower end of the shock absorber, and the upper end cover is arranged at the upper end of the shock absorber, the lower end cover of the sealing rubber sleeve is connected to the end of the piston rod, the piston rod passes through the sealing rubber sleeve, one end of the sealing rubber sleeve is installed on the lower end cover, and the other end is installed on the lower end cover of the sealing rubber sleeve; the oil inlet and outlet are used to charge and discharge oil into the shock absorber.

[0016] Furthermore, the deformable air storage chamber is provided with charging and discharging holes, and the charging and discharging holes extend out of the outer wall of the shock absorber.

[0017] Further, the damper is an electromagnetic switch damper, which includes a base, a switch plate, and a cover plate; the switch plate is arranged on the base, a moving iron core is arranged at the end of the switch plate, and a fixed iron core is arranged on the side wall of the base, the fixed iron core and the moving iron core are arranged correspondingly, when the fixed iron core is energized, the fixed iron core drives the moving iron core to drive the switch plate to slide linearly on the base; a return spring is arranged between the end of the switch plate and the side wall of the base;

[0018] The bottom of the base is provided with a base fixing channel, the cover plate is provided with a cover plate fixing channel, the base fixing channel and the cover plate fixing channel are arranged correspondingly, the switch plate is provided with an adjustment channel and an adjustment auxiliary channel, and the adjustment channel and the adjustment auxiliary channel are arranged at intervals from each other.

[0019] Furthermore, the electromagnetic switch damper is a bidirectional electromagnetic switch damper, the lower end surface of the base is provided with a base spring sheet, the base spring sheet covers part of the base channel in the area where the switch plate is located; the upper end surface of the cover plate is provided with a cover plate spring sheet, the cover plate spring sheet covers the remaining entire or part of the cover plate channel in the area where the switch plate is located;

[0020] A limit reinforcement plate is arranged inside the base, and a switch plate is arranged between adjacent limit reinforcement plates;

[0021] The upper and lower surfaces of the switch plate are provided with ball grooves, and the switch plate is slidably connected with the base and the cover plate through the balls in the ball grooves.

[0022] Further description of the present invention:

[0023] 1. The use of the damper is not limited to the damper mentioned in the present invention, and other prior art dampers that conform to the present invention may also be used.

[0024] 2. The material of the deformable air storage chamber can be rubber, elastically deformable metal, etc.

[0025] 3. The shape and implementation of the deformable air storage chamber can be varied. It can be a complete deformable air storage chamber, or a deformable air storage chamber formed by the inner wall or outer wall of the shock absorber, etc.

[0026] 4. The "outside" in the present invention refers to the outer edge of the structure, emphasizing the external surface where the structure is located.

[0027] 5. The "end" in the present invention refers to the end portion of an object or a component.

[0028] The present invention has the following beneficial technical effects:

[0029] First, from the functional perspective

[0030] 1. The energy accumulator is equipped with a deformable gas storage chamber, which has the following functions:

[0031] (1) Prevent compressible gas from mixing with oil and causing emulsification; (2) Prevent compressible gas from entering the damper, causing damping failure; (3) Prevent compressible gas from entering the piston chamber, causing sealing failure.

[0032] 2. The functions of the energy storage device are:

[0033] (1) Suppress the vibration when the spring rebounds after absorbing shock, and play a role in buffering and shock absorption.

[0034] (2) When the piston moves up and down, due to the presence of the piston rod in the lower chamber of the piston, there is a difference between the oil volume in the upper chamber of the piston and the oil volume in the lower chamber of the piston per unit length of piston movement. This volume difference is balanced by the deformable air storage chamber in the accumulator through compression or expansion.

[0035] 3. Function of damping piston:

[0036] When the piston moves up and down, the volume of the chamber below the piston changes, and oil needs to flow in or out to balance the volume difference through the damping piston, otherwise the movement of the piston will fail; at the same time, when the oil passes through the damping piston, it will generate a certain damping force, which plays a damping role.

[0037] 4. The damper of the present invention is an electronically controlled damper, which controls the gear position of the switch plate through the electronic control system, thereby adjusting the oil flow area of ​​the oil, and then adjusting the size of the shock absorber damping force. The electronic control system controls the size of the shock absorber damping force, and the response is faster, more sensitive, and more direct. This adjustment method is more flexible, so that active intelligent control of the vehicle body posture can be achieved. For example, when braking suddenly, the damping is increased to suppress the forward tilt of the vehicle; the damping is reduced on uneven roads to make the driving experience more comfortable; the damping is increased on flat or high-speed sections to make the vehicle more stable; when turning, the damping of the shock absorbers on both sides can be adjusted separately to make the vehicle turn more smoothly.

[0038] Traditional shock absorbers cannot actively adjust the size of the damping force; although the modified shock absorbers on the market can actively adjust the size of the damping force, they need to be manually adjusted when the vehicle is stationary. They cannot be adjusted at any time according to road conditions or emergencies while the vehicle is moving. They lack flexibility and are inconvenient to use.

[0039] 5. The shock absorber of the present invention can realize the two-way damping adjustment function

[0040] The damper used in the present invention is provided with spring sheets, and the spring sheets are divided into two groups. The cover plate spring sheets are arranged at the upper end surface of the damper cover plate, and cover part of the channel of the cover plate according to the channel area of ​​the switch plate; the base spring sheets are arranged at the lower end surface of the base, and cover the channel of the base according to the channel area of ​​the remaining whole or part of the switch plate.

[0041] When the oil flows from the damper base to the damper cover, the base spring sheet blocks the flow of oil in the base channels within its coverage range, resulting in failure of the damping adjustment of the switch plate within this range; at the same time, the cover spring sheet is opened due to the flow of oil, allowing the oil to pass from the damper base through the base channels and switch plate channels within its coverage range and out from the cover channels. Therefore, the electrically controlled damping adjustment of the switch plate within the coverage range of the cover spring sheet is effective, thereby achieving electrically controlled adjustable damping in this oil flow direction.

[0042] When the oil flows from the damper cover to the damper base, the cover spring sheet blocks the flow of oil through the cover holes within its coverage, causing failure of the damping adjustment of the switch plate within this range. At the same time, the base spring sheet opens due to the flow of oil, allowing the oil to flow from the damper cover through the cover holes and switch plate holes within its coverage, and out from the base holes. Therefore, the electrically controlled damping adjustment of the switch plate within the coverage of the base spring sheet is effective, realizing electrically controlled adjustable damping in this oil flow direction.

[0043] This arrangement of the spring sheet can realize two-way damping of the damper and simultaneously make it electronically adjustable, thereby realizing the two-way damping adjustment function of the shock absorber.

[0044] Second, from the perspective of mechanics

[0045] 1. Force of the deformable air storage chamber: The force is transmitted to the oil through the piston rod and piston, and then transmitted to the force surface of the deformable air storage chamber through the oil in an all-round way. Compared with the traditional structure that directly contacts and transmits the force to the deformable air storage chamber, it has great advantages. In the existing air suspension, the structure directly contacts the airbag, and the force is directly transmitted between the contact surfaces of the two, which is easy to cause friction and uneven force, affecting the service life; or it is easy to produce creases on the non-contact surface, and the service life is short.

[0046] 2. The accumulator acts as a force-bearing chamber, directly bearing the pressure transmitted by the piston. When the piston moves upward, the deformable air storage chamber of the accumulator is compressed, and the accumulator generates a greater rebound force to balance the force transmitted upward by the piston rod; when the piston moves downward, the deformable air storage chamber of the accumulator expands, generating a rebound force to cause the piston head to move downward.

[0047] 3. The structural strength of the damper. A switch plate that can move linearly is sandwiched between the base and the cover plate, which can better resist the impact force of the oil in the up and down directions, so that the force of the switch plate is evenly distributed to the cover plate or the base, avoiding the local stress of the switch plate caused by the impact, protecting the normal operation of the switch plate, and enhancing the reliability of the damper; the damper is equipped with a limit reinforcement plate inside, which can further increase the overall structural strength, make the overall force more uniform, further enhance the impact resistance of the damper, and at the same time maintain the strength of the entire shock absorber at a high level. Because the damper has a high strength, it will not affect the overall strength of the shock absorber.

[0048] 4. The shock absorber of the present invention has a damping piston and a damper as components for providing damping force, which can make the damping force adjustment range larger and the damping adjustment more flexible.

[0049] 5. The shock absorber of the present invention is an integrated design of a damper and an energy storage device, and has a more streamlined structure, so the overall strength is guaranteed.

[0050] Third, from the perspective of thermodynamics

[0051] 1. The deformable air storage chamber soaked in oil has excellent heat dissipation; because the thermal conductivity of the oil is high, when heat is generated, the oil can quickly transfer the heat to the shell and dissipate it in the air. The deformable air storage chamber can quickly conduct and dissipate heat, effectively avoiding the problem of aging of the deformable air storage chamber at high temperatures and extending its service life. However, the existing air bags are exposed to the air, and the thermal conductivity of the air is low, and the heat transfer is slower. When the shock absorber moves violently, it is easy to generate heat accumulation inside, and the long-term temperature is too high to affect the service life.

[0052] 2. The coil of the fixed magnet of the electric damper is soaked in oil and has excellent heat dissipation. Because the thermal conductivity of the oil is high, when heat is generated, the oil can quickly transfer the heat to the shell and dissipate it in the air. The coil can quickly conduct and dissipate heat, effectively avoiding the problem of coil aging at high temperatures and extending its service life. However, the existing coil is exposed to the air, which has a low thermal conductivity and slower heat transfer. When the damper is adjusted quickly, at high frequency, and for a long time, it is easy to generate heat accumulation inside, and the long-term temperature is too high to affect the service life.

[0053] Fourth, from the perspective of safety

[0054] 1. The deformable gas storage chamber is inside the shock absorber. The deformable gas storage chamber protected by the outer wall has the following advantages: First, if the outer wall of the energy storage device is strong enough, the deformable gas storage chamber has no risk of bursting; second, under the protection of the outer wall, it can be isolated from damage by external factors, such as strong ultraviolet rays, chemical pollution, mud, sand, and other foreign objects.

[0055] Fifth, from the perspective of controllable expansion

[0056] 1. The electronically controlled damper can accurately and quickly control the change of damping size, which provides the basic conditions for intelligent control or rapid adjustment of the vehicle body.

[0057] In summary, the shock absorber of the present invention is an integrated design of an electronically controlled damper and an energy storage device, with a more streamlined structure and more complete functions, achieving high integration in technology, structure and function, and having significant innovation and progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 It is a schematic diagram of the structure of the present invention;

[0059] Figure 2 is a cross-sectional view of the present invention;

[0060] Figure 3 is an axonometric view of the present invention;

[0061] Figure 4 is an exploded view of the present invention;

[0062] Figure 5 It is the structural diagram of the damper;

[0063] Figure 6 yes Figure 5 A top view of

[0064] Figure 7 yes Figure 5 Bottom view of

[0065] Figure 8 is a top view of the damping piston;

[0066] Fig. 9 is a bottom view of the damping piston;

[0067] Fig.10 is a schematic structural diagram of a second embodiment of the present invention;

[0068] Fig.11 is a schematic structural diagram of a third embodiment of the present invention;

[0069] Fig.12 is a schematic structural diagram of a fourth embodiment of the present invention;

[0070] Fig.13 is a schematic structural diagram of a fifth embodiment of the present invention;

[0071] Fig.14 is a structural schematic diagram of a sixth embodiment of the present invention;

[0072] Fig.15 is a schematic structural diagram of a seventh embodiment of the present invention;

[0073] Fig.16 is a schematic structural diagram of an eighth embodiment of the present invention;

[0074] Fig.17 is a schematic structural diagram of a ninth embodiment of the present invention;

[0075] In the figure, 11, energy accumulator; 1110, energy accumulator chamber; 1120, deformable gas storage chamber; 1130, outer wall of energy accumulator; 1131, charging and discharging holes; 1140, inner wall of energy accumulator; 1141, oil trough of energy accumulator; 1150, upper wall of energy accumulator; 1151, oil passage of energy accumulator; 1160, lower wall of energy accumulator; 1170, oil partition of energy accumulator; 1171, oil hole of energy accumulator;

[0076] 13. Piston body; 1310. Damping piston; 1311. Piston ring; 1320. Piston upper chamber; 1330. Piston lower chamber; 1340. Piston chamber wall; 1350. Piston rod; 1351. Fixed end;

[0077] 14. Electromagnetic switch damper; 1410. Base; 1411. Base fixing channel; 1412. Limit reinforcing plate; 1420. Switch plate; 1421. Moving iron core; 1422. Adjustment channel; 1423. Adjustment auxiliary channel; 1424. Ball groove; 1425. Ball; 1430. Fixed iron core; 1440. Cover plate; 1441. Cover plate fixing channel; 1450. Reset spring; 1461. Base spring sheet; 1462. Cover plate spring sheet;

[0078] 15, upper oil chamber; 1510, upper oil chamber; 1520, outer wall of the upper oil chamber; 1530, inner wall of the upper oil chamber; 1540, upper wall of the upper oil chamber; 1550, lower wall of the upper oil chamber;

[0079] 17. Accessories and sealing structure; 1710. Lower end cover; 1711. Sealing oil seal; 1712. Dustproof oil seal; 1720. Sealing rubber sleeve; 1730. Sealing rubber sleeve lower end cover; 1740. Upper end cover; 1750. Oil inlet and outlet; 1760. Oil hole. DETAILED DESCRIPTION

[0080] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0081] Specific implementation method 1: Combination Figures 1 to 9The present embodiment is described. In the embodiment, a gas-liquid composite shock absorber includes an accumulator 11 and a piston body 13. A piston rod 1350 is arranged inside the piston cavity wall 1340 of the piston body 13. The interior of the piston cavity wall 1340 is a piston cavity. The piston cavity is divided into an upper piston chamber 1320 and a lower piston chamber 1330 by a damping piston 1310 at one end of the piston rod 1350. The upper piston chamber 1320 is connected to the accumulator 11. The damping piston 1310 is a piston with a damping function.

[0082] The accumulator 11 includes an accumulator chamber 1110 and a deformable gas storage chamber 1120 ; the accumulator 11 is disposed on the outside of the piston chamber wall 1340 .

[0083] In a preferred embodiment, the oil space formed between the piston upper chamber 1320 and the energy accumulator 11 is an upper oil chamber 15 , and the piston upper chamber 1320 is connected to the upper oil chamber 15 through the oil hole 1760 .

[0084] In a preferred embodiment, the interior of the upper oil chamber 15 is an upper oil chamber 1510, and the upper oil chamber 1510 is a chamber surrounded by an upper oil chamber outer wall 1520, an upper oil chamber inner wall 1530, an upper oil chamber upper wall 1540 and an upper oil chamber lower wall 1550;

[0085] The communication mode between the piston chamber and the energy accumulator in the present invention is as follows:

[0086] The piston upper chamber 1320 is directly connected to the accumulator 11 , or the piston upper chamber 1320 is connected to the first accumulator 11 through the upper oil chamber 15 .

[0087] In this embodiment, the piston upper chamber 1320 is connected to the first energy accumulator 11 through the upper oil chamber 15. Other combinations of connection methods are obvious and are not reflected in this embodiment.

[0088] In a preferred embodiment, the deformable gas storage chamber 1120 is disposed inside the energy storage chamber 1110 , and the energy storage chamber 1110 is a chamber surrounded by an energy storage outer wall 1130 , an energy storage inner wall 1140 , an energy storage upper wall 1150 and an energy storage lower wall 1160 .

[0089] In a preferred embodiment, a plurality of accumulator oil grooves 1141 are evenly arranged on the circumference of one side of the accumulator inner wall 1140 close to the deformable air storage chamber 1120, and a plurality of accumulator oil passages 1151 are evenly arranged on the circumference of the accumulator upper wall 1150, and the accumulator oil passages 1151 are connected to the corresponding accumulator oil grooves 1141.

[0090] Description of the oil tank:

[0091] When the energy storage chamber is filled with oil, when the deformable air storage chamber is completely in contact with the inner cylinder wall, the oil is quickly passed through the oil groove to the contact surface, which plays a role in guiding the oil and prevents the deformable air storage chamber from being deformed when being compressed, thereby achieving the purpose of quickly filling the energy storage chamber with oil; when the energy storage chamber is drained of oil, the deformable air storage chamber is prevented from being partially stored with oil due to uneven pressure, so that the deformable air storage chamber can be completely in contact with the inner cylinder wall, thereby increasing the use efficiency of the deformable air storage chamber.

[0092] In a preferred embodiment, the shock absorber also includes a damper; a damper is arranged inside the oil space formed between the piston upper chamber 1320 and the energy accumulator 11, the oil space of the piston upper chamber 1320, and the oil space of the energy accumulator 11, so that the oil flows through the damper, and a damper is also arranged inside the damping piston 1310, so that the oil flows through the damper.

[0093] In a preferred embodiment, one end of the piston rod 1350 located inside the piston cavity is connected to the damping piston 1310 , and the other end extending out of the piston cavity is provided with a fixed end 1351 , and a piston ring 1311 is installed on the damping piston 1310 .

[0094] In a preferred embodiment, the shock absorber also includes an auxiliary and sealing structure 17, which includes a lower end cover 1710, a sealing rubber sleeve 1720, a sealing rubber sleeve lower end cover 1730, an upper end cover 1740, and an oil inlet and outlet 1750; a sealing oil seal 1711 and a dustproof oil seal 1712 are arranged in the lower end cover 1710; the lower end cover 1710 is arranged at the lower end of the shock absorber, the upper end cover 1740 is arranged at the upper end of the shock absorber, the sealing rubber sleeve lower end cover 1730 is connected to the end of the piston rod 1350, the piston rod 1350 passes through the sealing rubber sleeve 1720, one end of the sealing rubber sleeve 1720 is installed on the lower end cover 1710, and the other end is installed on the sealing rubber sleeve lower end cover 1730; the oil inlet and outlet 1750 is used to charge and discharge oil into the shock absorber.

[0095] In a preferred embodiment, the deformable air storage chamber 1120 is provided with an air charging and discharging hole 1131, and the air charging and discharging hole 1131 extends out of the outer wall of the shock absorber.

[0096] In a preferred embodiment, the damper is an electromagnetic switch damper 14, which includes a base 1410, a switch plate 1420, and a cover plate 1440; the switch plate 1420 is arranged on the base 1410, a moving iron core 1421 is arranged at the end of the switch plate 1420, and a fixed iron core 1430 is arranged on the side wall of the base 1410, and the fixed iron core 1430 is arranged corresponding to the moving iron core 1421. When the fixed iron core 1430 is energized, the fixed iron core 1430 drives the moving iron core 1421 to drive the switch plate 1420 to slide linearly on the base 1410; a return spring 1450 is arranged between the end of the switch plate 1420 and the side wall of the base 1410;

[0097] A base fixing hole 1411 is provided at the bottom of the base 1410, and a cover fixing hole 1441 is provided on the cover 1440. The base fixing hole 1411 is provided corresponding to the cover fixing hole 1441. The switch plate 1420 is provided with an adjustment hole 1422 and an adjustment auxiliary hole 1423. The adjustment hole 1422 and the adjustment auxiliary hole 1423 are provided at intervals from each other.

[0098] In a preferred embodiment, the electromagnetic switch damper 14 is a bidirectional electromagnetic switch damper, and the lower end surface of the base 1410 is provided with a base spring piece 1461, and the base spring piece 1461 covers a part of the base channel in the area where the switch plate 1420 is located; the upper end surface of the cover plate 1440 is provided with a cover plate spring piece 1462, and the cover plate spring piece 1462 covers the remaining whole or the remaining part of the cover plate channel in the area where the switch plate 1420 is located;

[0099] A limit reinforcing plate 1412 is disposed inside the base 1410 , and a switch plate 1420 is disposed between adjacent limit reinforcing plates 1412 ;

[0100] Ball grooves 1424 are provided on the upper and lower surfaces of the switch plate 1420 , and the switch plate 1420 is slidably connected to the base 1410 and the cover plate 1440 via balls 1425 in the ball grooves 1424 .

[0101] Description of the fixed iron core and the moving iron core:

[0102] The fixed iron core 1430 in this embodiment is wound with a coil on the outer layer. When the coil is energized, the fixed iron core 1430 generates magnetic force, causing the moving iron core 1421 to move. This is common knowledge and will not be elaborated in the present invention.

[0103] Description of the electromagnetic switch damper hole:

[0104] The cover plate fixing hole 1441 is arranged corresponding to the base fixing hole 1411, and the adjustment hole 1422 and the auxiliary adjustment hole 1423 of the switch plate are arranged at intervals. This design enables a single switch plate to have two gears, namely:

[0105] 1. When the fixed iron core is energized to generate a magnetic field and is attracted to the moving iron core of the switch board, the adjustment channel, the cover plate fixing channel, and the base fixing channel coincide with each other. At this time, the oil flow area in this area is the largest and the damping force is the smallest.

[0106] 2. When the fixed iron core 1430 is energized to generate a magnetic field that repels the moving iron core 1421 of the switch board, the auxiliary channel 1423, the cover plate fixing channel 1441, and the base fixing channel 1411 are adjusted to coincide with each other. At this time, the oil flow area in this area is the smallest and the damping force is the largest.

[0107] The electromagnetic switch damper composed of multiple switch plates can achieve multiple gear adjustments such as soft, medium and hard. At the same time, the setting of the auxiliary channel is adjusted to ensure the minimum oil flow area when the damper is adjusted to the maximum damping force or when it is misoperated, ensuring the normal use of the shock absorber. The auxiliary channel can be optimized according to different design parameters, leaving optional means for subsequent parameter design.

[0108] The damper is provided with auxiliary channels, the functions of which are:

[0109] When the damper is adjusted to the maximum damping force or when it is misoperated, the auxiliary channel can ensure its minimum oil flow area to ensure the normal use of the shock absorber. The auxiliary channel can be optimized according to different design parameters, leaving optional means for subsequent parameter design.

[0110] Instructions for the switch board:

[0111] The shape of the switch plate 1420 of the present invention includes but is not limited to strip shape, fan shape, etc. Figures 1 to 9 In the illustrated embodiment, the switch plate 1420 is a strip-shaped switch plate.

[0112] Description of the return spring:

[0113] Since the electromagnetic drive device is a prior art, the reset spring can be divided into a pull spring and a push spring, and can be set at one end or the other end of the switch plate. There are many implementation methods, which are relatively clear to technicians in related fields and will not be elaborated in detail in this embodiment.

[0114] Description of the limit reinforcement plate:

[0115] The limit reinforcement plate serves to enhance the overall structural strength of the damper. For applications where structural strength requirements are not high, the limit reinforcement plate can be cancelled as appropriate to increase the installation space of the switch plate.

[0116] Description of the spring sheet:

[0117] The spring sheet is used as a directional opening and closing element to control the opening and closing of the channel when the oil flows in different directions. The spring sheet of the present invention can also be replaced by existing technologies with equivalent functions, such as spring plus steel ball or one-way valve, etc., which will not be given in detail in the present invention.

[0118] Instructions for use of the damper:

[0119] The use of the damper is not limited to the electromagnetic switch damper in this embodiment, and other conventional dampers that conform to this embodiment may also be used.

[0120] Specific implementation method 2: Combination Fig.10 This embodiment is described. In this embodiment, a plurality of accumulator oil grooves 1141 are evenly arranged on the circumference of one side of the accumulator outer wall 1130 close to the deformable gas storage chamber 1120, and a plurality of accumulator oil passages 1151 are evenly arranged on the circumference of the accumulator upper wall 1150. The accumulator oil passages 1151 are connected to the corresponding accumulator oil grooves 1141.

[0121] Other components and connection relationships are the same as those in the first specific implementation mode.

[0122] Specific implementation method three: Combination Figure 11 to Figure 12 This embodiment is described. In this embodiment, an accumulator oil barrier 1170 is disposed inside the accumulator chamber 1110 . The accumulator oil barrier 1170 is provided with a plurality of accumulator oil holes 1171 .

[0123] Other components and connection relationships are the same as those in the first specific implementation mode.

[0124] Specific implementation method four: Combination Figures 13 to 16 To illustrate this embodiment, in this embodiment, the accumulator 11 is disposed at the end of the piston cavity wall 1340 ; the piston upper chamber 1320 is connected to the upper oil cavity 15 through the oil hole 1760 .

[0125] The other components and connection relationships are the same as those of the first and third embodiments.

[0126] Specific implementation method five: Combination Fig.17 To explain this embodiment, in this embodiment, the damper is only arranged inside the damping piston, that is, the damper is arranged inside the damping piston 1310, so that the oil flows through the damper.

[0127] Working principle of the present invention:

[0128] The gas-liquid composite shock absorber of the present invention can achieve the shock absorbing effect of the shock absorber in two ways: first, by adjusting the damping force of the damping piston 1310 or the electronically controlled damper; second, by adjusting the expansion degree of the deformable gas storage chamber 1120 through the gas charging and discharging holes 1131. When the two ways are adjusted separately or simultaneously, the active control of the shock absorbing effect of the shock absorber can be achieved.

[0129] At the same time, through the above two methods, active control of the vehicle body posture can also be achieved. For example, when turning, adjusting the damping force of the shock absorber to the maximum can prevent severe vehicle roll; when the vehicle is driving on bumpy roads, adjusting the damping force of the shock absorber to the minimum can ensure the comfort of the vehicle.

[0130] When the damper of the present invention is an electromagnetic switch damper, its working principle is: the fixed iron core 1430 is energized, the fixed iron core 1430 generates a magnetic field, attracting or repelling the moving iron core 1421 on the switch plate 1420, and adjusting the position of the switch plate 1420 to adjust the oil flow area of ​​the oil, thereby achieving the adjustment of the damping force of the shock absorber.

[0131] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gas-liquid composite shock absorber, characterized in that: The shock absorber comprises an energy accumulator (11) and a piston body (13); a piston rod (1350) is arranged inside the piston cavity wall (1340) of the piston body (13); the interior of the piston cavity wall (1340) is a piston cavity; the piston cavity is divided into an upper piston chamber (1320) and a lower piston chamber (1330) by a damping piston (1310) at one end of the piston rod (1350); the upper piston chamber (1320) is connected to the energy accumulator (11); the damping piston (1310) is a piston with a damping function; The energy storage device (11) comprises an energy storage device chamber (1110) and a deformable gas storage chamber (1120); The energy accumulator (11) is arranged on the outside of the piston cavity wall (1340); or the energy accumulator (11) is arranged at the end of the piston cavity wall (1340).

2. The gas-liquid composite shock absorber according to claim 1, characterized in that: The oil space formed between the piston upper chamber (1320) and the energy accumulator (11) is an upper oil chamber (15), and the piston upper chamber (1320) is connected to the upper oil chamber (15) through an oil hole (1760); or the piston upper chamber (1320) and the first energy accumulator (11) are directly connected through the oil hole (1760).

3. The gas-liquid composite shock absorber according to claim 1, characterized in that: The deformable gas storage chamber (1120) is arranged inside the energy storage chamber (1110), and the energy storage chamber (1110) is a chamber surrounded by an energy storage outer wall (1130), an energy storage inner wall (1140), an energy storage upper wall (1150) and an energy storage lower wall (1160).

4. The gas-liquid composite shock absorber according to claim 3 is characterized in that: A plurality of accumulator oil passage grooves (1141) are evenly arranged on the circumference of one side of the accumulator outer wall (1130) or the accumulator inner wall (1140) close to the deformable gas storage chamber (1120), and a plurality of accumulator oil passage channels (1151) are evenly arranged on the circumference of the accumulator upper wall (1150), and the accumulator oil passage channels (1151) are connected to the corresponding accumulator oil passage grooves (1141); Or an accumulator oil barrier (1170) is provided inside the accumulator chamber (1110), and the accumulator oil barrier (1170) is provided with a plurality of accumulator oil holes (1171); Alternatively, a first energy accumulator oil passage groove (1141) and a first energy accumulator oil passage partition (1170) are simultaneously provided inside the first energy accumulator chamber (1110).

5. The gas-liquid composite shock absorber according to claim 1, characterized in that: The shock absorber further comprises a damper; the damper is arranged inside the oil space formed between the piston upper chamber (1320) and the energy accumulator (11), the oil space of the piston upper chamber (1320), and the oil space of the energy accumulator (11), so that the oil flows through the damper; Or a damper is arranged inside the damping piston (1310) so that the oil flows through the damper; Or a damper is arranged inside the oil space formed between the piston upper chamber (1320) and the energy accumulator (11), the oil space of the piston upper chamber (1320), and the oil space of the energy accumulator (11), so that the oil flows through the damper, and a damper is also arranged inside the damping piston (1310), so that the oil flows through the damper.

6. The gas-liquid composite shock absorber according to claim 1, characterized in that: One end of the piston rod (1350) located inside the piston cavity is connected to the damping piston (1310), and the other end extending out of the piston cavity is provided with a fixed end (1351), and a piston ring (1311) is installed on the damping piston (1310).

7. The gas-liquid composite shock absorber according to claim 1, characterized in that: The shock absorber further comprises an auxiliary and sealing structure (17), which comprises a lower end cover (1710), a sealing rubber sleeve (1720), a sealing rubber sleeve lower end cover (1730), an upper end cover (1740), and an oil inlet and outlet (1750); a sealing oil seal (1711) and a dustproof oil seal (1712) are arranged in the lower end cover (1710); the lower end cover (1710) is arranged at the lower end of the shock absorber, the upper end cover (1740) is arranged at the upper end of the shock absorber, the sealing rubber sleeve lower end cover (1730) is connected to the end of the piston rod (1350), the piston rod (1350) passes through the sealing rubber sleeve (1720), one end of the sealing rubber sleeve (1720) is mounted on the lower end cover (1710), and the other end is mounted on the sealing rubber sleeve lower end cover (1730); the oil inlet and outlet (1750) is used to charge and discharge oil into and out of the shock absorber.

8. The gas-liquid composite shock absorber according to claim 1, characterized in that: The deformable air storage chamber (1120) is provided with an air charging and discharging hole (1131), and the air charging and discharging hole (1131) extends out of the outer wall of the shock absorber.

9. The gas-liquid composite shock absorber according to claim 5, characterized in that: The damper is an electromagnetic switch damper (14), which comprises a base (1410), a switch plate (1420), and a cover plate (1440); the switch plate (1420) is arranged on the base (1410); a moving iron core (1421) is arranged at the end of the switch plate (1420); a fixed iron core (1430) is arranged on the side wall of the base (1410); the fixed iron core (1430) and the moving iron core (1421) are arranged correspondingly; when the fixed iron core (1430) is energized, the fixed iron core (1430) drives the moving iron core (1421) to drive the switch plate (1420) to slide linearly on the base (1410); a return spring (1450) is arranged between the end of the switch plate (1420) and the side wall of the base (1410); The bottom of the base (1410) is provided with a base fixing hole (1411), the cover plate (1440) is provided with a cover plate fixing hole (1441), the base fixing hole (1411) and the cover plate fixing hole (1441) are arranged correspondingly, the switch plate (1420) is provided with an adjustment hole (1422) and an adjustment auxiliary hole (1423), and the adjustment hole (1422) and the adjustment auxiliary hole (1423) are arranged at intervals from each other.

10. The gas-liquid composite shock absorber according to claim 9, characterized in that: The electromagnetic switch damper (14) is a bidirectional electromagnetic switch damper, wherein a base spring sheet (1461) is provided on the lower end surface of the base (1410), and the base spring sheet (1461) covers a portion of the base channel in the area where the switch plate (1420) is located; and a cover plate spring sheet (1462) is provided on the upper end surface of the cover plate (1440), and the cover plate spring sheet (1462) covers the entirety or the remaining portion of the cover plate channel in the area where the switch plate (1420) is located. A limit reinforcing plate (1412) is disposed inside the base (1410), and a switch plate (1420) is disposed between adjacent limit reinforcing plates (1412); The switch plate (1420) is provided with ball grooves (1424) on the upper and lower surfaces, and the switch plate (1420) is slidably connected to the base (1410) and the cover plate (1440) via balls (1425) in the ball grooves (1424).

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