Adjusting cylinder type damper and gas-liquid combined type shock absorber

Abstract

The invention discloses an adjusting cylinder type damper and a gas-liquid combined type shock absorber, and relates to the technical field of shock absorbers. The invention aims to solve the problems that in the prior art, damping force of a traditional damper cannot be adjusted; the problems that in the prior art, a shock absorber is used for modification, although the damping force can be adjusted, people need to get off a vehicle and bend and stretch hands to manually adjust the vehicle when the vehicle is static, adjustment is not convenient, and if the vehicle is on the muddy ground, damping adjustment is poor in use experience are solved. The device comprises an adjusting cylinder, a fixed cylinder and a rotating mechanism, the adjusting cylinder and the fixed cylinder are coaxially and adjacently arranged, the rotating mechanism comprises a transmission rod, one end of the transmission rod is fixedly connected with the rotating mechanism, the other end of the transmission rod is fixedly connected with the adjusting cylinder, and the rotating mechanism drives the adjusting cylinder to rotate through the transmission rod.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle shock absorbers, and in particular to an adjustable cylinder damper and 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 in driving state increases due to the weight, which leads to the following problems. For example, when braking, the inertia force will increase, resulting in serious nodding phenomenon. At this time, the damping force of the shock absorber needs to be increased to alleviate this phenomenon, but the damper in the traditional shock absorber cannot be adjusted electronically in real time, which directly affects the driving experience and safety. How to adjust the damping force of the damper in the shock absorber in a timely and fast manner is particularly important, and new energy vehicles have sufficient power themselves, so the development direction of the damper in the shock absorber is electrification and intelligence, so as to realize the active control and intelligent control of the shock absorber.

[0003] Shock absorbers are important components in vehicle suspension systems. Conventional shock absorbers usually include a working cylinder filled with a damping fluid such as oil or gas, and a piston, which is arranged on a piston rod movably arranged in the cylinder. The function of the shock absorber is to quickly attenuate the vibration of the vehicle body and improve the driving smoothness and ride comfort of the vehicle. The damping force of the damper in the shock absorber is an important parameter for controlling its working resistance.

[0004] The damper of a traditional shock absorber cannot adjust the damping force. Although the modified shock absorbers on the market can adjust the damping force, it is extremely inconvenient for people to get off the vehicle and bend over to adjust it manually when the vehicle is stationary. If you want to adjust the damping on a 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 damper of a traditional shock absorber cannot be electronically controlled or intelligently adjusted at any time according to road conditions or emergencies while the vehicle is driving. It lacks flexibility and is extremely inconvenient to use. Therefore, the damper of the shock absorber needs to develop in the direction of electrification and intelligent control. Summary of the invention

[0005] The purpose of the present invention is to solve the problems mentioned in the above background technology, and further provide an adjustable cylinder damper that can actively adjust the damping force of the damper in the shock absorber to achieve rapid adjustment of the vehicle body posture, thereby achieving active and intelligent control of the shock absorber.

[0006] The technical solution adopted by the present invention to solve the above-mentioned problems is: an adjustable cylinder damper, including an adjusting cylinder, a fixed cylinder and a rotating mechanism; the adjusting cylinder and the fixed cylinder are coaxially arranged closely, the rotating mechanism includes a transmission rod, one end of the transmission rod is fixedly connected to the rotating mechanism, and the other end is fixedly connected to the adjusting cylinder, and the rotating mechanism drives the adjusting cylinder to rotate through the transmission rod; the adjusting cylinder and the fixed cylinder are both provided with corresponding channels, and the channels are used for passing oil.

[0007] Furthermore, the fixed cylinder is divided into a plurality of sector-shaped areas, which are the same as the sector-shaped areas divided by the adjusting cylinder; the fixed cylinder is provided with a fixed cylinder fixed channel and a fixed cylinder auxiliary channel according to the sector-shaped areas; the adjusting cylinder is provided with an adjusting channel and an adjusting auxiliary channel according to the sector-shaped areas, and within the same sector-shaped area, the adjusting channel is arranged correspondingly to the fixed channel of the fixed cylinder, and the adjusting auxiliary channel is arranged correspondingly to the auxiliary channel of the fixed cylinder.

[0008] Furthermore, the adjusting cylinder is rotatably connected to the fixing cylinder via an adjusting cylinder upper bearing and an adjusting cylinder lower bearing.

[0009] Furthermore, the fixed cylinder is connected to the fixed cylinder cover plate; the surface of the fixed cylinder cover plate in contact with the adjusting cylinder is provided with a gear limit bead, and the lower part of the gear limit bead is provided with a gear limit spring; the contact surface between the adjusting cylinder and the gear limit bead is provided with a gear limit pit according to the gear position.

[0010] Furthermore, the adjustable cylinder damper includes a total limiter, which includes a total limit block and a total limit groove; the total limit block is arranged on the adjusting cylinder in contact with the fixed cylinder cover plate; the total limit groove is arranged on the fixed cylinder cover plate in contact with the adjusting cylinder, and the total limit block is slidably connected to the total limit groove.

[0011] Furthermore, a gas-liquid composite shock absorber comprises a first energy accumulator, a second energy accumulator, a piston body, and an adjustable cylinder damper; 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, and the piston cavity is divided into an upper piston chamber and a lower piston chamber by a piston head at one end of the piston rod; the upper piston chamber is connected to the first energy accumulator, the lower piston chamber is connected to the second energy accumulator, and a damper is arranged between the oil channel formed by the upper piston chamber and the first deformable gas storage chamber in the first energy accumulator; The first energy accumulator outer wall of the first energy accumulator is connected to the piston cavity wall, the second energy accumulator outer wall of the second energy accumulator is connected to the piston cavity wall, the first energy accumulator lower wall of the first energy accumulator and the second energy accumulator upper wall of the second energy accumulator are connected up and down, and the first energy accumulator, the second energy accumulator and the piston body form a double-cylinder structure.

[0012] Furthermore, the first energy accumulator comprises a first energy accumulator chamber and a first deformable gas storage chamber; the first deformable gas storage chamber is arranged inside the first energy accumulator chamber, and the first energy accumulator chamber is a chamber surrounded by a first energy accumulator outer wall, a first energy accumulator inner wall, a first energy accumulator upper wall and a first energy accumulator lower wall; the first deformable gas storage chamber is provided with a first charging and discharging hole (1131), the first charging and discharging hole protrudes from the first energy accumulator outer wall, and a first energy accumulator oil partition is provided inside the first energy accumulator chamber, and the first energy accumulator oil partition is provided with a plurality of first energy accumulator oil holes.

[0013] The second energy accumulator comprises a second energy accumulator chamber and a second deformable gas storage chamber; the second deformable gas storage chamber is arranged inside the second energy accumulator chamber, and the second energy accumulator chamber is a chamber surrounded by a second energy accumulator outer wall, a second energy accumulator inner wall, a second energy accumulator upper wall and a second energy accumulator lower wall; the second deformable gas storage chamber is provided with second charging and discharging holes, and the second charging and discharging holes extend out of the second energy accumulator outer wall; a second energy accumulator oil-through partition is provided inside the second energy accumulator chamber, and a plurality of second energy accumulator oil-through holes are provided on the second energy accumulator oil-through partition.

[0014] Furthermore, one end of the piston rod located inside the piston cavity is connected to a piston head, and the other end extending out of the piston cavity is provided with a fixed end, and a piston ring is installed on the piston head; The oil space formed between the upper chamber of the piston and the first accumulator is an upper oil chamber, and the upper oil chamber is connected with the upper chamber of the piston through the first oil hole; The oil space formed between the piston lower chamber and the second accumulator is a lower oil chamber, and the lower oil chamber is connected with the piston lower chamber through the second oil hole; A one-way valve is arranged inside the oil space formed between the upper chamber of the piston and the first accumulator, the oil space of the upper chamber of the piston, and the oil space of the first accumulator.

[0015] Furthermore, the shock absorber also includes a displacement sensor, which includes an electronic compartment, a measuring rod and a permanent magnetic ring; The electronic compartment is arranged on the upper end cover, the permanent magnetic ring is arranged on the piston head, and the measuring rod is electrically connected with the electronic compartment; the measuring rod sequentially passes through the upper chamber of the piston and the permanent magnetic ring and then extends into the interior of the piston rod.

[0016] The present invention has the following beneficial technical effects: First, from the functional perspective The damper of the present invention controls the gear position of the adjustment cylinder through a rotating mechanism, thereby adjusting the oil flow area of ​​the oil, and further adjusting the damping force of the shock absorber. The rotating mechanism controls the damping force of the shock absorber, 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.

[0017] 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.

[0018] The damper is equipped with an auxiliary channel, which is used to ensure the minimum oil flow area when the damper is adjusted to the maximum damping force or when it is misoperated, so as 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.

[0019] The damper is equipped with a gear limit bead, which serves the following purposes: 1. As long as the limit bead moves to the edge of the limit pit, it can move smoothly to the center of the limit pit. This can avoid the electric control mechanism's insufficient accuracy, which will affect the switch plate's inability to accurately reach the gear position. If this affects the switch plate's channel and the fixed channel, it will not be able to completely overlap, affecting the oil flow area of ​​the channel and thus affecting the damping.

[0020] 2. Its function is also to limit the displacement of the switch plate when the limit bead and the limit pit are combined together, so that the damper can stop powering on after completing the damping adjustment, saving vehicle battery power.

[0021] The one-way valve can initially control the rebound speed of the shock absorber. Since different types of vehicles have different requirements for suspension stiffness, the installation direction and number of the one-way valve can be adjusted. The one-way valve initially controls the flow of oil and works together with the damper to meet the suspension stiffness requirements of different types of vehicles.

[0022] Second, from the perspective of mechanics The fixed cylinder is close to the adjusting cylinder, which can better resist the impact force of the oil and evenly distribute the force of the adjusting cylinder to the fixed cylinder, avoiding the impact force from generating stress locally in the adjusting cylinder, protecting the normal operation of the adjusting cylinder and enhancing the reliability of the damper.

[0023] Third, from the perspective of thermodynamics The rotating mechanism of the 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 rotating mechanism can quickly conduct and dissipate heat, effectively avoiding the problem of aging of the rotating mechanism at high temperatures and extending its service life.

[0024] Fourth, from the perspective of controllability (expansion) The adjustable cylinder damper of the present invention can accurately and quickly control the change of the damping size, which provides a basic condition for intelligent control or rapid adjustment of the vehicle body.

[0025] In summary, the present invention has significant technical advancements in both technology and structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is an axonometric view of the adjustment cylinder; Figure 3 Schematic diagram of the structure of an embodiment of the gas-liquid composite shock absorber of the present invention; Figure 4 is a cross-sectional view of an embodiment of the gas-liquid composite shock absorber of the present invention; Figure 5 It is an exploded view of an embodiment of the gas-liquid composite shock absorber of the present invention; In the figure, 11, first energy accumulator; 1110, first energy accumulator chamber; 1120, first deformable gas storage chamber; 1130, first energy accumulator outer wall; 1131, first charge and discharge hole; 1140, first energy accumulator inner wall; 1150, first energy accumulator upper wall; 1151, first energy accumulator oil passage; 1160, first energy accumulator lower wall; 1170, first energy accumulator oil partition; 1171, first energy accumulator oil hole; 12. Second energy accumulator; 1210. Second energy accumulator chamber; 1220. Second deformable gas storage chamber; 1230. Second energy accumulator outer wall; 1231. Second charge and discharge hole; 1240. Second energy accumulator inner wall; 1250. Second energy accumulator upper wall; 1260. Second energy accumulator lower wall; 1261. Second energy accumulator oil passage; 1270. Second energy accumulator oil barrier; 1271. Second energy accumulator oil hole; 13. Piston body; 1310. Piston head; 1311. Piston ring; 1320. Piston upper chamber; 1330. Piston lower chamber; 1340. Piston chamber wall; 1350. Piston rod; 1351. Fixed end; 15, upper oil chamber; 1510, upper oil chamber; 1520, outer wall of upper oil chamber; 1530, inner wall of upper oil chamber; 1540, upper wall of upper oil chamber; 1550, lower wall of upper oil chamber; 1551, oil passage of lower wall of upper oil chamber; 16, lower oil chamber; 1610, lower oil chamber; 1620, outer wall of lower oil chamber; 1630, inner wall of lower oil chamber; 1640, upper wall of lower oil chamber; 1650, lower wall of lower oil chamber; 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. One-way valve; 1751. One-way valve retaining ring; 1760. First oil hole; 1770. Second oil hole; 1780. First oil inlet and outlet; 1790. Second oil inlet and outlet; 18. displacement sensor; 1810. electronic compartment; 1820. measuring rod; 1830. permanent magnetic ring; 20. Adjustment cylinder damper; 2010. Adjustment cylinder; 2011. Adjustment channel; 2012. Adjustment auxiliary channel; 2013. Adjustment cylinder upper bearing; 2014. Adjustment cylinder lower bearing; 2015. Gear limit pit; 2020. Fixed cylinder; 2021. Fixed cylinder fixed channel; 2022. Fixed cylinder auxiliary channel; 2030. Rotation mechanism; 2031. Transmission rod; 2032. Transmission rod upper bearing; 2033. Transmission rod lower bearing; 2040. Fixed cylinder cover plate; 2041. Gear limit spring; 2042. Gear limit bead; 2050. Total limiter; 2051. Total limit block; 2052. Total limit groove. DETAILED DESCRIPTION

[0027] 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.

[0028] Specific implementation method 1: Combination Figure 1 to Figure 2 To illustrate this embodiment, in the embodiment, the adjusting cylinder damper 20 includes an adjusting cylinder 2010, a fixed cylinder 2020 and a rotating mechanism 2030; the adjusting cylinder 2010 and the fixed cylinder 2020 are coaxially arranged adjacent to each other, the rotating mechanism 2030 includes a transmission rod 2031, one end of the transmission rod 2031 is fixedly connected to the rotating mechanism 2030, and the other end is fixedly connected to the adjusting cylinder 2010, and the rotating mechanism 2030 drives the adjusting cylinder 2010 to rotate through the transmission rod 2031; corresponding channels are arranged on the adjusting cylinder 2010 and the fixed cylinder 2020, and the channels are used for passing oil.

[0029] Description of the rotating mechanism: The rotating mechanism may adopt existing technologies such as motor rotation adjustment, manual rotation adjustment, hydraulic rotation adjustment, etc., and this embodiment does not make any specific limitation.

[0030] In a preferred embodiment, the adjustable cylinder damper 20 is characterized in that: the fixed cylinder 2020 is divided into a plurality of sector-shaped areas, which are the same as the sector-shaped areas divided by the adjustable cylinder 2010; The fixed cylinder 2020 is provided with a fixed cylinder fixing channel 2021 and a fixed cylinder auxiliary channel 2022 in a sector-shaped area; The adjusting tube 2010 is provided with adjusting channels 2011 and adjusting auxiliary channels 2012 according to the fan-shaped areas. In the same fan-shaped area, the adjusting channel 2011 is arranged corresponding to the fixed tube fixed channel 2021, and the adjusting auxiliary channel 2012 is arranged corresponding to the fixed tube auxiliary channel 2022.

[0031] Instructions for adjusting the holes of the cartridge damper: Combination Figure 1 As shown, the fixed cylinder C and the adjustment cylinder C are divided into four fan-shaped areas. The fixed cylinder fixed channel C in each area is 3 rows with a total of 27 circular channels, and the auxiliary channel C of the fixed cylinder is 2 rows with a total of 10 square channels. The adjustment channel C of the adjustment cylinder C in each area is 3 rows with a total of 27 circular channels, and the auxiliary adjustment channel C is 2 rows with a total of 10 square channels. This design enables the adjustment cylinder damper to achieve three-speed adjustment. In the 1st gear, a total of 108 circular channels and 40 square channels are oil-free; in the 2nd gear, a total of 72 circular channels and 60 square channels are oil-free; in the 3rd gear, a total of 36 circular channels and 80 square channels are oil-free, thereby achieving three-speed adjustment of soft, medium and hard. Multi-speed adjustment can also be set according to needs.

[0032] This hole design can increase the oil passage area of ​​each gear as a whole, thereby increasing the comfort of each gear of the vehicle; it can increase the oil passage area of ​​the middle and low gears, reduce the gap with the oil passage area of ​​the high gear, and achieve fine adjustment of the vehicle comfort; it increases the uniformity of oil passage, so that oil passes through all areas of the adjustment cylinder, preventing uneven deformation or impact of the airbag due to uneven oil passage, and increasing the service life of the airbag; according to the use functions of different vehicles, auxiliary oil holes can be set as needed, reflecting the variability and applicability of the damper; In a preferred embodiment, the adjusting cylinder 2010 is rotatably connected to the fixed cylinder 2020 via an adjusting cylinder upper bearing 2013 and an adjusting cylinder lower bearing 2014; the transmission rod 2031 is rotatably connected to the upper cover of the rotating mechanism 2030 via an upper transmission rod bearing 2032, and the transmission rod 2031 is rotatably connected to the base of the rotating mechanism 2030 via a lower transmission rod bearing 2033.

[0033] In a preferred embodiment, the fixed cylinder 2020 is connected to the fixed cylinder cover 2040; the surface of the fixed cylinder cover 2040 in contact with the adjusting cylinder 2010 is provided with a gear limiting bead 2042, and the lower part of the gear limiting bead 2042 is provided with a gear limiting spring 2041; the contact surface between the adjusting cylinder 2010 and the gear limiting bead 2042 is provided with a gear limiting pit 2015 according to the gear.

[0034] In a preferred embodiment, the adjusting cylinder damper 20 includes a total limiter 2050, and the total limiter 2050 includes a total limit block 2051 and a total limit groove 2052; the total limit block 2051 is arranged on the adjusting cylinder 2010 in contact with the fixed cylinder cover plate 2040; the total limit groove 2052 is arranged on the fixed cylinder cover plate 2040 in contact with the adjusting cylinder 2010, and the total limit block 2051 is slidably connected to the total limit groove 2052.

[0035] Specific implementation method 2: Combination Figures 3 to 5 The present embodiment is described. In the embodiment, a gas-liquid composite shock absorber using an adjustable cylinder damper 20 is used. The shock absorber comprises a first accumulator 11, a second accumulator 12, a piston body 13, and an adjustable cylinder damper 20. 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 piston head 1310 at one end of the piston rod 1350. The upper piston chamber 1320 is connected to the first accumulator 11, and the lower piston chamber 1330 is connected to the second accumulator 12. The adjustable cylinder damper 20 is arranged inside the oil space formed by the upper piston chamber 1320 and the first accumulator 11, the oil space of the upper piston chamber 1320, and the oil space of the first accumulator 11, so that the oil flows through the adjustable cylinder damper 20. The first energy accumulator outer wall 1130 of the first energy accumulator 11 is connected to the piston cavity wall 1340, the second energy accumulator outer wall 1230 of the second energy accumulator 12 is connected to the piston cavity wall 1340, the first energy accumulator lower wall 1160 of the first energy accumulator 11 and the second energy accumulator upper wall 1250 of the second energy accumulator 12 are connected up and down, and the first energy accumulator 11 and the second energy accumulator 12 form a double-cylinder structure with the piston body 13.

[0036] Notes on damper setting positions: There are three ways to set the damper: 1. A damper is arranged inside the oil space formed between the piston upper chamber 1320 and the first accumulator 11, the oil space of the piston upper chamber 1320, and the oil space of the first accumulator 11, so that the oil flows through the damper.

[0037] 2. A damper is arranged inside the oil space formed between the piston lower chamber 1330 and the second accumulator 12, the oil space of the piston lower chamber 1330, and the oil space of the second accumulator 12, so that the oil flows through the damper.

[0038] 3. A damper is arranged inside the oil space formed between the upper chamber 1320 of the piston and the first energy accumulator 11, the oil space of the upper chamber 1320 of the piston, and the oil space of the first energy accumulator 11, so that the oil flows through the damper; a damper is arranged inside the oil space formed between the lower chamber 1330 of the piston and the second energy accumulator 12, the oil space of the lower chamber 1330 of the piston, and the oil space of the second energy accumulator 12, so that the oil flows through the damper.

[0039] exist Figures 3 to 5 In the described implementation mode, the damper is set in the first of the three options mentioned above. Through the position described in the first option, it is easy to think of the positions described in the second and third options, which is obvious. Therefore, the contents of the second and third options are no longer reflected in this embodiment.

[0040] In a preferred embodiment, the first energy accumulator 11 includes a first energy accumulator chamber 1110 and a first deformable gas storage chamber 1120; the first deformable gas storage chamber 1120 is arranged inside the first energy accumulator chamber 1110, and the first energy accumulator chamber 1110 is a chamber surrounded by a first energy accumulator outer wall 1130, a first energy accumulator inner wall 1140, a first energy accumulator upper wall 1150 and a first energy accumulator lower wall 1160; the first deformable gas storage chamber 1120 is provided with a first charging and discharging hole 1131, and the first charging and discharging hole 1131 extends out of the first energy accumulator outer wall 1130, and the first energy accumulator oil-through partition 1170 is provided inside the first energy accumulator chamber 1110, and the first energy accumulator oil-through partition 1170 is provided with a plurality of first energy accumulator oil-through holes 1171.

[0041] The second accumulator 12 includes a second accumulator chamber 1210 and a second deformable gas storage chamber 1220; the second deformable gas storage chamber 1220 is arranged inside the second accumulator chamber 1210, and the second accumulator chamber 1210 is a chamber surrounded by a second accumulator outer wall 1230, a second accumulator inner wall 1240, a second accumulator upper wall 1250 and a second accumulator lower wall 1260; the second deformable gas storage chamber 1220 is provided with a second charging and discharging hole 1231, and the second charging and discharging hole 1231 extends out of the second accumulator outer wall 1230, and the second accumulator oil-through partition 1270 is provided inside the second accumulator chamber 1210, and a plurality of second accumulator oil-through holes 1271 are provided on the second accumulator oil-through partition 1270.

[0042] Description of the deformable gas storage chamber: The materials of the deformable air storage chamber include: rubber, metal with variable elasticity and other materials.

[0043] In a preferred embodiment, one end of the piston rod 1350 located inside the piston cavity is connected to the piston head 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 piston head 1310; The oil space formed between the piston upper chamber 1320 and the first accumulator 11 is the upper oil chamber 15, which is connected to the piston upper chamber 1320 through the first oil hole 1760; the oil space formed between the piston lower chamber 1330 and the second accumulator 12 is the lower oil chamber 16, which is connected to the piston lower chamber 1330 through the second oil hole 1770; A one-way valve 1750 is disposed inside the oil space formed between the piston upper chamber 1320 and the first accumulator 11 , the oil space of the piston upper chamber 1320 , and the oil space of the first accumulator 11 .

[0044] 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; The interior of the lower oil chamber 16 is a lower oil chamber 1610 , which is a chamber surrounded by a lower oil chamber outer wall 1620 , a lower oil chamber inner wall 1630 , a lower oil chamber upper wall 1640 and a lower oil chamber lower wall 1650 .

[0045] Description of the one-way valve: The one-way valve can control the rebound speed of the shock absorber. Since different types of vehicles have different requirements for suspension stiffness, the installation direction and number of the one-way valve can be adjusted. The one-way valve initially controls the flow of oil and works together with the damper to meet the suspension stiffness requirements of different types of vehicles.

[0046] In a preferred embodiment, the shock absorber further comprises a displacement sensor 18, and the displacement sensor 18 comprises an electronic compartment 1810, a measuring rod 1820 and a permanent magnetic ring 1830; The electronic chamber 1810 is arranged on the upper end cover 1740, the permanent magnet ring 1830 is arranged on the piston head 1310, and the measuring rod 1820 is electrically connected to the electronic chamber 1810; the measuring rod 1820 sequentially passes through the piston upper chamber 1320 and the permanent magnet ring 1830 and then extends into the interior of the piston rod 1350; 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, and an upper end cover 1740; the lower end cover 1710 is arranged at the lower end of the shock absorber, and the upper end cover 1740 is arranged at the upper end of the shock absorber; 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 connected to the end of the piston cavity wall 1340, and 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.

[0047] In a preferred embodiment, the auxiliary and sealing structure 17 includes a first oil inlet and outlet 1780 and a second oil inlet and outlet 1790. The first oil inlet and outlet 1780 is used to fill and discharge oil into the upper chamber 1320 of the piston, and the second oil inlet and outlet 1790 is used to fill and discharge oil into the lower chamber 1330 of the piston.

[0048] Other components and connection relationships are the same as those in the first specific implementation mode.

[0049] Working principle of the present invention: There are two ways to adjust the length of the gas-liquid composite shock absorber of the present invention: first, by charging and discharging the air hole, the expansion degree of the deformable gas storage chamber is adjusted; second, by the oil inlet and outlet, the volume of the oil in the energy storage chamber and the oil cavity is adjusted. When the length is adjusted in the two ways separately or simultaneously, active control of the vehicle body posture can be achieved.

[0050] When the shock absorber suspension system is needed to lower the vehicle body height: the second deformable air storage chamber 1220 is inflated, the second oil inlet and outlet 1790 is filled with oil, the pressure in the piston lower chamber 1330 increases, and the piston rod 1350 moves upward, thereby achieving the purpose of lowering the vehicle body height.

[0051] When the shock absorber suspension system is needed to raise the vehicle height: the first deformable air storage chamber 1120 is inflated, the first oil inlet and outlet 1780 is filled with oil, the pressure in the piston upper chamber 1320 increases, and the piston rod 1350 moves downward, thereby achieving the purpose of raising the vehicle height.

[0052] The working principle of the adjustable cylinder damper of the present invention is as follows: the rotating mechanism 2030 drives the adjustable cylinder 2010 to rotate through the transmission rod 2031, adjusts the gear position of the adjustable cylinder 2010, thereby adjusting the oil flow area of ​​the oil, and further realizes the adjustment of the damping force of the shock absorber.

[0053] 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. An adjustable cylinder damper, characterized in that: The adjustable cylinder damper (20) comprises an adjustable cylinder (2010), a fixed cylinder (2020) and a rotating mechanism (2030); the adjustable cylinder (2010) and the fixed cylinder (2020) are coaxially arranged in close proximity; the rotating mechanism (2030) comprises a transmission rod (2031); one end of the transmission rod (2031) is fixedly connected to the rotating mechanism (2030) and the other end is fixedly connected to the adjustable cylinder (2010); the rotating mechanism (2030) drives the adjustable cylinder (2010) to rotate via the transmission rod (2031); The adjusting cylinder (2010) and the fixing cylinder (2020) are both provided with corresponding holes, and the holes are used for passing oil.

2. The adjustable cylinder damper according to claim 1, characterized in that: The fixed cylinder (2020) is divided into a plurality of sector-shaped areas, which are the same as the sector-shaped areas divided by the adjustment cylinder (2010); The fixed cylinder (2020) is provided with a fixed cylinder fixing channel (2021) and a fixed cylinder auxiliary channel (2022) in a sector-shaped area; The adjusting tube (2010) is provided with an adjusting hole (2011) and an adjusting auxiliary hole (2012) according to the sector-shaped area. In the same sector-shaped area, the adjusting hole (2011) is arranged correspondingly to the fixed hole (2021) of the fixing tube, and the adjusting auxiliary hole (2012) is arranged correspondingly to the auxiliary hole (2022) of the fixing tube.

3. The adjustable cylinder damper according to claim 1, characterized in that: The adjusting cylinder (2010) is rotatably connected to the fixing cylinder (2020) via an adjusting cylinder upper bearing (2013) and an adjusting cylinder lower bearing (2014).

4. The adjustable cylinder damper according to claim 1, characterized in that: The fixed cylinder (2020) is connected to the fixed cylinder cover plate (2040); a gear position limiting bead (2042) is provided on the surface of the fixed cylinder cover plate (2040) in contact with the adjusting cylinder (2010); a gear position limiting spring (2041) is provided at the bottom of the gear position limiting bead (2042); and a gear position limiting pit (2015) is provided on the contact surface between the adjusting cylinder (2010) and the gear position limiting bead (2042) according to the gear position.

5. The adjustable cylinder damper according to claim 1, characterized in that: The invention comprises a total stopper (2050), wherein the total stopper (2050) comprises a total stopper block (2051) and a total stopper groove (2052); the total stopper block (2051) is arranged on an adjustment cylinder (2010) in contact with a fixed cylinder cover plate (2040); the total stopper groove (2052) is arranged on a fixed cylinder cover plate (2040) in contact with the adjustment cylinder (2010), and the total stopper block (2051) is slidably connected to the total stopper groove (2052).

6. A gas-liquid composite shock absorber, characterized in that: It comprises an adjustable cylinder damper (20) as claimed in any one of claims 1 to 5.

7. The gas-liquid composite shock absorber according to claim 6, characterized in that: The shock absorber further comprises a first energy accumulator (11), a second energy accumulator (12), a piston body (13), and an adjustable cylinder damper (20); 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 piston head (1310) at one end of the piston rod (1350); the upper piston chamber (1320) is in communication with the first energy accumulator (11), and the lower piston chamber (1330) is in communication with the second energy accumulator (12); An adjustable cylinder damper (20) is arranged inside the oil space formed between the piston upper chamber (1320) and the first accumulator (11), the oil space of the piston upper chamber (1320), and the oil space of the first accumulator (11), so that the oil flows through the adjustable cylinder damper (20); The first energy accumulator outer wall (1130) of the first energy accumulator (11) is connected to the piston cavity wall (1340), the second energy accumulator outer wall (1230) of the second energy accumulator (12) is connected to the piston cavity wall (1340), the first energy accumulator lower wall (1160) of the first energy accumulator (11) and the second energy accumulator upper wall (1250) of the second energy accumulator (12) are connected up and down, and the first energy accumulator (11) and the second energy accumulator (12) form a double-tube structure with the piston body (13).

8. The gas-liquid composite shock absorber according to claim 7, characterized in that: The first energy accumulator (11) comprises a first energy accumulator chamber (1110) and a first deformable gas storage chamber (1120); the first deformable gas storage chamber (1120) is arranged inside the first energy accumulator chamber (1110), and the first energy accumulator chamber (1110) is a chamber surrounded by a first energy accumulator outer wall (1130), a first energy accumulator inner wall (1140), a first energy accumulator upper wall (1150) and a first energy accumulator lower wall (1160); the first deformable gas storage chamber (1120) is provided with a first charging and discharging hole (1131), and the first charging and discharging hole (1131) protrudes from the first energy accumulator outer wall (1130); a first energy accumulator oil barrier (1170) is arranged inside the first energy accumulator chamber (1110), and the first energy accumulator oil barrier (1170) is provided with a plurality of first energy accumulator oil holes (1171); The second energy accumulator (12) comprises a second energy accumulator chamber (1210) and a second deformable gas storage chamber (1220); the second deformable gas storage chamber (1220) is arranged inside the second energy accumulator chamber (1210), and the second energy accumulator chamber (1210) is a chamber surrounded by a second energy accumulator outer wall (1230), a second energy accumulator inner wall (1240), a second energy accumulator upper wall (1250) and a second energy accumulator lower wall (1260); a second charging and discharging hole (1231) is arranged on the second deformable gas storage chamber (1220), and the second charging and discharging hole (1231) protrudes from the second energy accumulator outer wall (1230); a second energy accumulator oil barrier (1270) is arranged inside the second energy accumulator chamber (1210), and a plurality of second energy accumulator oil through holes (1271) are arranged on the second energy accumulator oil barrier (1270).

9. The gas-liquid composite shock absorber according to claim 7, characterized in that: One end of the piston rod (1350) located inside the piston cavity is connected to a piston head (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 piston head (1310); The oil space formed between the piston upper chamber (1320) and the first accumulator (11) is an upper oil chamber (15), and the upper oil chamber (15) is connected to the piston upper chamber (1320) through the first oil hole (1760); The oil space formed between the piston lower chamber (1330) and the second accumulator (12) is a lower oil chamber (16), and the lower oil chamber (16) is connected to the piston lower chamber (1330) through the second oil hole (1770); A one-way valve (1750) is arranged inside the oil space formed between the piston upper chamber (1320) and the first accumulator (11), the oil space of the piston upper chamber (1320), and the oil space of the first accumulator (11).

10. The gas-liquid composite shock absorber according to claim 6, characterized in that: The shock absorber further comprises a displacement sensor (18), wherein the displacement sensor (18) comprises an electronic compartment (1810), a measuring rod (1820) and a permanent magnetic ring (1830); The electronic chamber (1810) is arranged on the upper end cover (1740), the permanent magnet ring (1830) is arranged on the piston head (1310), and the measuring rod (1820) is electrically connected to the electronic chamber (1810); the measuring rod (1820) passes through the piston upper chamber (1320) and the permanent magnet ring (1830) in sequence and then extends into the interior of the piston rod (1350).

Images