Drawing compression type damping shock absorber

Abstract

The utility model discloses a pulling compression type damping shock absorber which comprises a shock absorption shell, and at least one sealed air storage cavity is formed in the shock absorption shell. Each damping piston is arranged in the corresponding air storage cavity, and an inflation damping cavity is formed in the corresponding air storage cavity through the corresponding damping piston; one end of the damping connecting rod is connected with the damping piston, and the other end of the damping connecting rod penetrates through the damping shell and is connected with a first connecting bracket; when the top space of the damping piston forms an inflatable damping cavity, the damper is a pulling type damper, and when the bottom space of the damping piston forms an inflatable damping cavity, the damper is a compression type damper. The double-damping shock absorber can act as a pulling type shock absorber and can also be used as a compression type shock absorber, the purpose of shock absorption can be achieved through compressed air, the shock absorption size is convenient to adjust, a shock absorption piece is omitted, the use range is widened, and the double-damping structure capable of adjusting the two-way damping size is arranged. Different variable damping effects can be achieved when the shock absorber is pressed down and retracted.

Description

Technical Field

[0001] The utility model relates to a shock absorber, in particular to a draw-and-compression damping shock absorber. Background Art

[0002] Shock absorbers, especially vehicle-mounted shock absorbers, are automotive accessories that are primarily used to cushion the impact vibrations caused by the ground impacting the vehicle, thereby improving the comfort of the driver and passengers. Therefore, shock absorbers are now also commonly used in electric vehicles and electric bicycles.

[0003] Most single-cylinder shock absorbers in the prior art include a main body and a movable shaft. The main body is provided with a cavity, a piston is provided in the cavity, and the movable shaft passes through the cavity and is connected to the piston. The movable shaft controls the displacement of the piston in the cavity to achieve a compression / pulling shock absorption effect.

[0004] In the prior art, since the working principles of compression-type single-cylinder shock absorbers and pull-type single-cylinder shock absorbers are different, the components required for compression-type single-cylinder shock absorbers and pull-type single-cylinder shock absorbers are also different. Since the components required for compression-type single-cylinder shock absorbers and pull-type single-cylinder shock absorbers are different, their structures and sizes may be incompatible, resulting in the inability to directly interchange these components, which increases the complexity of design and manufacturing.

[0005] At the same time, the damping range of compression-type single-cylinder shock absorbers and pull-type single-cylinder shock absorbers in the existing technology is mostly non-adjustable. The lack of the ability to adjust the damping range may result in the single-cylinder shock absorber being unable to flexibly adapt to different vibration conditions and requirements;

[0006] At the same time, the two chambers of the twin-cylinder shock absorber in the prior art are connected by an air supply hole to facilitate air supply, and an air plug is installed in the air supply hole to achieve sealing. When the air plug is damaged, the two chambers will lose air, causing the twin-cylinder shock absorber to fail.

[0007] Finally, in order to improve the effectiveness of shock absorbers, traditional shock absorbers use dampers to absorb the impact of bumps and make the vehicle run more smoothly. However, in current technology, although the damping size of the damper is adjustable, the damping size of downward pressure and retraction is the same, that is, the damping size of the downward pressure is the same as the damping size of the retraction, and it is impossible to adjust the damping size of retraction and downward pressure differently.

[0008] Therefore, in order to improve the overall performance of the shock absorber, including responsiveness, comfort, handling, as well as reduce wear and improve adaptability, modern shock absorber designs tend to allow independent adjustment of the damping force in the compression and retraction stages. Utility Model Content

[0009] In order to solve the above problems, the utility model provides a pull-compression damping shock absorber, which can effectively solve many deficiencies in the prior art.

[0010] The utility model is realized by the following technical solution: a pull-compression damping shock absorber, comprising:

[0011] a shock-absorbing shell, wherein at least one sealed air storage cavity is provided in the shock-absorbing shell;

[0012] A shock-absorbing piston is disposed in each air storage cavity, and an air-filled shock-absorbing cavity is formed in the air storage cavity by the shock-absorbing piston;

[0013] a shock-absorbing connecting rod, one end of which is connected to the shock-absorbing piston, and the other end of which passes through the shock-absorbing housing and is connected to a first connecting bracket;

[0014] When the top space of the shock absorbing piston forms an air-filled shock absorbing chamber, it is a pull-type shock absorber; when the bottom space of the shock absorbing piston forms an air-filled shock absorbing chamber, it is a compression-type shock absorber.

[0015] At least one damping member, each of the at least one damping member is mounted on one side of the shock absorbing housing via a fixing plate, and a second connecting bracket is provided at a top power end of the at least one damping member;

[0016] At least one damping member is provided with a damping size adjustment mechanism, and the damping size of each damping member is adjusted to be the same or different by the damping size adjustment mechanism, and the damping size of each damping member when pressed down and moved up can be adjusted to be the same or different by the damping size adjustment mechanism.

[0017] As a preferred technical solution, an inflation channel is provided at the upper and lower ends of the shock-absorbing housing corresponding to the air storage cavity. Both sides of the inflation channel are open, and an inflation port is formed at one side of the inflation channel. An air nozzle is installed through a threaded inner portion of the inflation port. A blocking port is formed through the other side of the inflation channel. A locking sealing plug is installed through a threaded inner portion of the blocking port.

[0018] The bottom of the blocking port is provided with a conductive air guide hole at the position corresponding to the inflatable shock-absorbing cavity. When the locking sealing plug is not locked, the inflatable shock-absorbing cavity is connected to the inflation channel through the blocking port. When the locking sealing plug is threadedly locked, the blocking port and the air guide hole are sealed by the locking sealing plug, so that each inflatable shock-absorbing cavity becomes an independent chamber.

[0019] As an optimal technical solution, a dustproof sealing plug and a lubricating sealing plug are installed at the position where the shock-absorbing connecting rod passes through the shock-absorbing shell. The dustproof sealing plug and the lubricating sealing plug are respectively installed at the top position of the shock-absorbing shell, and the shock-absorbing connecting rod passes through the dustproof sealing plug and the lubricating sealing plug.

[0020] As a preferred technical solution, a shock-absorbing elastic reinforcement member is also provided in the inflatable shock-absorbing chamber. The shock-absorbing elastic reinforcement member is a spring and / or elastic member. The shock-absorbing elastic reinforcement member is installed between the shock-absorbing piston and a limit block to increase the shock-absorbing elastic force of the inflatable shock-absorbing chamber.

[0021] As a preferred technical solution, an oil storage hole is further provided on the moving surface of the shock-absorbing piston, and the moving surface of the shock-absorbing piston is set as a conical guide surface. When the shock-absorbing piston moves, the lubricating oil enters the oil storage hole through impact.

[0022] As a preferred technical solution, the damping member includes a damping cylinder, a damping rod is movably arranged in the damping cylinder, one end of the damping rod extends into the damping cylinder and is connected to a damping piston, and the other end passes through the damping sealing plug on the damping cylinder and extends to the outside and is connected to the second connecting bracket;

[0023] The damping size adjustment mechanism is arranged in the damping cylinder, a first baffle is arranged at the upper end of the damping piston, and a second baffle is arranged at the lower end of the damping piston. The first baffle and the second baffle both form an inwardly recessed air avoidance area, and the damping piston has a movable stroke between the first baffle and the second baffle.

[0024] As a preferred technical solution, the damping piston has an open cavity, and an oil inlet and outlet hole is provided on the bottom surface of the open cavity. A connecting rod is provided at the bottom of the damping rod. The first baffle and the second baffle are both fixedly mounted on the connecting rod. The damping piston is movably mounted on the connecting rod. The connecting rod passes through the oil inlet and outlet holes, and the aperture of the oil inlet and outlet hole is larger than the outer diameter of the connecting rod. The outer diameters of the first baffle and the second baffle are equal to the outer diameter of the damping piston.

[0025] The damping pistons in each damping element are installed in opposite directions. When the opening of the damping piston faces downward, when the damping piston moves downward, the damping piston leans against the first baffle, and the inlet and outlet oil holes are sealed by the first baffle. At this time, the damping piston has a decreasing damping force; when the damping piston moves upward, the damping piston leans against the second baffle, and the inlet and outlet oil holes are connected. At this time, the damping piston does not generate damping.

[0026] When the opening of the damping piston faces upward, when the damping piston moves downward, the damping piston leans against the first baffle, and the inlet and outlet oil holes are connected. At this time, the damping piston does not generate damping; when the damping piston moves upward, the damping piston leans against the second baffle, and the inlet and outlet oil holes are sealed by the second baffle. At this time, the damping piston has an upward damping force;

[0027] As a preferred technical solution, the damping adjustment mechanism includes:

[0028] A damping adjustment cylinder is installed in the damping cylinder and is sleeved on the outside of the damping rod and the damping piston. The damping adjustment strip has a damping adjustment chamber, and the damping piston is movably sealed and installed in the damping adjustment chamber.

[0029] The damping adjustment rod has a top portion fixedly connected to the bottom portion of the damping adjustment cylinder, a bottom portion extending out of the damping cylinder and connected to an adjustment knob, and a ball fixed point mechanism is also provided between the damping adjustment rod and the damping cylinder;

[0030] The damping adjustment cylinder is provided with a plurality of oil passage grooves arranged side by side from top to bottom on the outside, and an oil guide hole is provided at the initial end of each oil passage groove. An oil drain groove is provided longitudinally in the damping cylinder. The outer wall surface of the damping adjustment cylinder is in sealing contact with the inner wall surface of the damping cylinder. When the damping adjustment cylinder is rotated and one end of the oil passage groove is connected to the oil drain groove, the oil in the damping adjustment cylinder is squeezed out through the oil guide hole and enters the oil drain groove through the oil passage groove. The farther the circumferential distance between the oil guide hole and the oil drain groove is, the greater the damping force of the damping piston is, and the closer the circumferential distance between the oil guide hole and the oil drain groove is, the smaller the damping force of the damping piston is.

[0031] The circumferential distance between the oil path groove and the oil drain groove is adjusted by rotating the adjustment knob outside the damping adjustment rod.

[0032] As a preferred technical solution, a linear bearing is installed on the top of the damping adjustment cylinder, and the linear bearing has at least two oil return ports, and the oil return ports are connected to the interior of the damping adjustment cylinder;

[0033] A defoamer is also installed on the damping rod at the upper end of the linear bearing. The defoamer is provided with a plurality of defoaming holes. The oil discharged from the oil return port enters the defoamer for storage and defoaming.

[0034] As a preferred technical solution, the ball fixing mechanism includes a support spring and a ball, and a plurality of arc-shaped fixing grooves are provided on the circumferential surface of the damping adjustment rod. One end of the support spring is installed in the damping cylinder, and the other end pushes the ball out and makes the ball buckle into the arc-shaped fixing groove.

[0035] The utility model discloses a pull-out compression damping shock absorber, comprising:

[0036] a shock-absorbing shell, wherein at least one sealed air storage cavity is provided in the shock-absorbing shell;

[0037] A shock-absorbing piston is disposed in each air storage cavity, and an air-filled shock-absorbing cavity is formed in the air storage cavity by the shock-absorbing piston;

[0038] a shock-absorbing connecting rod, one end of which is connected to the shock-absorbing piston, and the other end of which passes through the shock-absorbing housing and is connected to a first connecting bracket;

[0039] When the top space of the shock-absorbing piston forms an air-filled shock-absorbing chamber, it is a pull-type shock absorber. When the bottom space of the shock-absorbing piston forms an air-filled shock-absorbing chamber, it is a compression-type shock absorber.

[0040] As a preferred technical solution, an inflation channel is provided at the upper and lower ends of the shock-absorbing housing corresponding to the air storage cavity. Both sides of the inflation channel are open, and an inflation port is formed at one side of the inflation channel. An air nozzle is installed through a threaded inner portion of the inflation port. A blocking port is formed through the other side of the inflation channel. A locking sealing plug is installed through a threaded inner portion of the blocking port.

[0041] The bottom of the blocking port is provided with a conductive air guide hole at a position corresponding to the inflatable shock absorbing cavity. When the locking sealing plug is not locked, the inflatable shock absorbing cavity is connected to the inflation channel through the blocking port. When the locking sealing plug is threadedly locked, the blocking port and the air guide hole are sealed by the locking sealing plug, so that each inflatable shock absorbing cavity becomes an independent chamber.

[0042] A dustproof sealing plug and a lubricating sealing plug are installed at the position where the shock-absorbing connecting rod passes through the shock-absorbing shell. The dustproof sealing plug and the lubricating sealing plug are respectively installed at the top position of the shock-absorbing shell, and the shock-absorbing connecting rod passes through the dustproof sealing plug and the lubricating sealing plug.

[0043] As a preferred technical solution, a shock-absorbing elastic reinforcement member is further provided in the pneumatic shock-absorbing chamber. The shock-absorbing elastic reinforcement member is a spring and / or an elastic member. The shock-absorbing elastic reinforcement member is installed between the shock-absorbing piston and a limit block to increase the shock-absorbing elastic force of the pneumatic shock-absorbing chamber.

[0044] An oil storage hole is also provided on the moving surface of the shock-absorbing piston, and the moving surface of the shock-absorbing piston is configured as a conical guide surface. When the shock-absorbing piston moves, the lubricating oil enters the oil storage hole through impact.

[0045] The beneficial effects of the present invention are as follows: the shock absorber of the present invention adopts air compression to achieve the purpose of shock absorption, eliminating the traditional shock absorption device. By simply adjusting the amount of gas filled, the intensity of the shock absorption can be easily changed, thereby quickly realizing the switching between pull-type shock absorption and compression-type shock absorption, which not only improves the flexibility of use, but also greatly reduces the cost because there is no need to replace different types of shock absorption devices.

[0046] The shock absorber of the present invention adopts an air nozzle seal at the inflation port and is provided with a locking sealing plug at the other end of the air channel, so that even if the air nozzle is damaged, the inflation shock absorber chamber can be used independently through the locking sealing plug, avoiding shock absorption failure caused by air leakage, thereby increasing the safety and reliability of the entire system.

[0047] The shock absorber of the utility model is internally provided with a damping piston and an upper and lower baffle structure, so that the damping size of downward pressure and retraction can be adjusted independently. The damping pistons in the two damping cylinders can be set oppositely. Through the external adjustment knob, the relative position of the oil path groove and the oil drain groove can be conveniently adjusted, thereby quickly changing the damping size. The above structure enables the shock absorber to flexibly respond to different driving scenarios and provide a more comfortable driving experience that conforms to various road conditions.

[0048] The damping adjustment cylinder of the utility model is equipped with a linear bearing on the top and is equipped with at least two oil return ports, which are communicated with the inside of the damping adjustment cylinder. When the damping piston is pressed down or retracted, the internal oil can enter the defoamer through the oil return ports, thereby achieving effective oil storage and defoaming, preventing oil leakage of the damper, and reducing the sealing pressure at the top shock-absorbing piston, which not only improves the durability and reliability of the shock absorber, but also reduces maintenance requirements and potential oil leakage risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 paying any creative work.

[0050] Figure 1 The overall structure of the embodiment 1 of the present invention is shown as follows Figure 1 ;

[0051] Figure 2 The overall structure of the embodiment 1 of the present invention is shown as follows Figure 2 ;

[0052] Figure 3 The internal structure of the first embodiment of the present invention is shown in FIG. Figure 1 ;

[0053] Figure 4 The internal structure of the first embodiment of the present invention is shown in FIG. Figure 2 ;

[0054] Figure 5 This is a schematic longitudinal cross-sectional view of Example 1 of the present utility model;

[0055] Figure 6 This is a schematic transverse cross-sectional view of Example 1 of the present utility model;

[0056] Figure 7 This is a schematic diagram of the external structure of the damping element of the utility model;

[0057] Figure 8This is a schematic diagram of the internal structure of the damping element of the utility model;

[0058] Figure 9 This is a schematic diagram of the structure of the utility model after the damping adjustment cylinder is removed;

[0059] Figure 10 For this utility model Figure 9 Schematic diagram of the bottom structure;

[0060] Figure 11 It is a longitudinal cross-sectional schematic diagram of the damping member of the utility model;

[0061] Figure 12 is a schematic transverse cross-sectional view of the damping element of the present invention;

[0062] Figure 13 Schematic diagram of the structure of the single-piston pull-out shock absorber in Example 2;

[0063] Figure 14 Schematic diagram of the structure of the single-piston compression shock absorber in Example 3;

[0064] Figure 15 Schematic diagram of the structure of the compression type dual shock absorber in Example 4;

[0065] Figure 16 This is a schematic structural diagram of Example 5;

[0066] Description of reference numerals:

[0067] 1. First connecting bracket; 2. Shock-absorbing housing; 3. Air nozzle; 4. Damping element; 5. Second connecting bracket; 6. Fixing plate; 7. Adjusting knob; 8. Locking seal plug; 9. Shock-absorbing connecting rod; 10. Dust-proof seal plug; 11. Lubricating seal plug; 12. Shock-absorbing elastic reinforcement member; 13. Shock-absorbing piston; 14. Inflating channel; 15. Inflatable shock-absorbing chamber; 16. Blocking port; 17. Air guide hole; 41. Damping cylinder; 42 , damping rod; 43, damping piston; 44, linear bearing; 45, defoamer; 46, oil return port; 47, oil channel groove; 48, oil guide hole; 49, damping adjustment cylinder; 71, arc-shaped fixed point groove; 72, damping adjustment rod; 50, first baffle; 51, damping piston; 52, second baffle; 53, connecting rod; 54, opening cavity; 55, oil inlet and outlet holes; 56, support spring; 57, ball; 58, oil drain groove. DETAILED DESCRIPTION

[0068] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.

[0069] Any feature disclosed in this specification (including any appended claims, abstract, and drawings), unless otherwise stated, may be replaced by other equivalent or similar features. In other words, unless otherwise stated, each feature is only an example of a series of equivalent or similar features. Example 1:

[0070] like Figure 1 and Figure 2 As shown, the utility model is a pull-type compression damping shock absorber, which adopts a pull-type dual-chamber shock absorber, specifically comprising a shock-absorbing shell 2, wherein the shock-absorbing shell 2 is provided with two sealed air storage chambers;

[0071] In order to achieve shock absorption, Figure 3 As shown, it also includes a shock-absorbing piston 13, which is arranged in each air storage cavity, and an air-filled shock-absorbing cavity 15 is formed in the air storage cavity by the shock-absorbing piston 13. Figure 5 As shown, in this embodiment, the shock-absorbing piston 13 is arranged at the top of the air storage chamber, and the air-filled shock-absorbing chamber 15 is formed in the sealed space at its upper end. Therefore, the shock absorber in this embodiment is a pull-type shock absorber, that is, it has a shock-absorbing effect when pulled upward;

[0072] The shock-absorbing elastic reinforcement 12 does not need to be used, that is, only the inflatable shock-absorbing chamber 15 needs to be filled with gas to be used for shock absorption. Therefore, the shock absorption size of the inflatable shock-absorbing chamber 15 can be adjusted by different amounts of gas filled, and this can be achieved by inflation and deflation, which is very convenient. Therefore, when it is necessary to adjust it to a compression shock absorber, just open the position of the inflation port, pull up the shock-absorbing piston 13, and then fill the air at the bottom with gas and seal it to form an inflatable shock-absorbing chamber 15 at the bottom, and you can quickly switch to a compression shock absorber. In this embodiment, a double inflatable shock-absorbing chamber 15 is used, which is suitable for occasions where greater shock absorption environment requirements are required.

[0073] It also includes a shock-absorbing connecting rod 9, one end of which is connected to the shock-absorbing piston 13, and the other end passes through the shock-absorbing housing 2 and is connected to a first connecting bracket 1. The first connecting bracket 1 is connected to an external carrier. The purpose of shock absorption is achieved by using the shock-absorbing connecting rod 9 and the shock-absorbing piston 13;

[0074] When the top space of the shock absorbing piston 13 forms an air-filled shock absorbing chamber 15, it is a pull-type shock absorber. When the bottom space of the shock absorbing piston 13 forms an air-filled shock absorbing chamber 15, it is a compression-type shock absorber.

[0075] In order to improve the stability of the shock absorber during use and better absorb the vibration of the vehicle caused by external impact force, two damping members 4 are used in this embodiment. Both damping members 4 are mounted on one side of the shock absorber housing 2 through a fixing plate 6, and a second connecting bracket 5 is provided at the top power end of the two damping members 4.

[0076] Among them, such as Figure 2 and Figure 7 As shown, both damping members 4 are provided with a damping size adjustment mechanism, and the damping size of each damping member 4 is adjusted to be the same or different by the damping size adjustment mechanism, and the damping size of each damping member 4 when pressed down and moved up can be adjusted to be the same or different by the damping size adjustment mechanism. Specifically, a damping force can be obtained when pressing down, and different damping forces can be obtained when retracting. Therefore, the utility model must use two damping members 4 to achieve different damping size settings back and forth.

[0077] like Figure 5 and Figure 6 As shown, an air charging channel 14 is provided at the upper and lower ends of the corresponding air storage cavity in the shock-absorbing housing 2. Both sides of the air charging channel 14 are open, and an air charging port is formed at one side of the air charging channel 14. An air nozzle 3 is installed in the air charging port through a thread. A blocking port 16 is formed at the other side of the air charging channel 14. A locking sealing plug 8 is installed in the blocking port 16 through a thread.

[0078] The bottom of the blocking port 16 is provided with a conductive air guide hole 17 at the position corresponding to the inflatable shock absorbing chamber 15. When the locking sealing plug 8 is not locked, the inflatable shock absorbing chamber 15 is connected to the inflatable channel 14 through the blocking port 16. When the locking sealing plug 8 is threadedly locked, the blocking port 16 and the air guide hole 17 are sealed by the locking sealing plug 8, so that each inflatable shock absorbing chamber 15 becomes an independent chamber. When it is necessary to adjust the working mode of the shock absorber to the pulling type or the compression type, it is only necessary to open the air nozzle 3 and the locking sealing plug 8, and then use the inflation port to fill the two inflatable shock absorbing chambers 15 with gas. If If it is a pull-out type, the shock-absorbing piston 13 will be moved to the bottom first, and then the inflation port at the upper end will be used to inflate the two inflatable shock-absorbing chambers 15. Conversely, if it is a compression type, the shock-absorbing piston 13 will be pulled up first, and then the inflation port at the bottom will be used to fill the inflatable shock-absorbing chamber 15 with gas and then seal the air nozzle 3. If one of them is damaged during later use, we only need to lock the locking sealing plug 8, block the blocking port 16 and the air guide hole 17, and then each inflatable shock-absorbing chamber 15 can be used separately, that is, there will be no situation where both shock-absorbing chambers cannot be used. This increases the emergency function and can still be used normally when a single one is damaged.

[0079] Among them, the position where the shock-absorbing connecting rod 9 passes through the shock-absorbing housing 2 is installed with a dust-proof sealing plug 10 and a lubricating sealing plug 11. The dust-proof sealing plug 10 and the lubricating sealing plug 11 are respectively installed at the top position of the shock-absorbing housing 2, and the shock-absorbing connecting rod 9 passes through the dust-proof sealing plug 10 and the lubricating sealing plug 11. Figure 3As shown, the dustproof sealing plug 10 seals the top to prevent dust and other things from entering the shock absorber, and the lubricating sealing plug 11 lubricates the shock-absorbing connecting rod 9 during the reciprocating motion, and can also be used as a sealing dustproof part. The double-layer sealing dustproof has a better sealing effect.

[0080] like Figure 3 and Figure 4 As shown, in order to improve the shock absorption effect, in some other cases, we can set a shock absorption elastic reinforcement member 12 in the pneumatic shock absorption chamber 15. The shock absorption elastic reinforcement member 12 is a spring and / or an elastic member. The shock absorption elastic reinforcement member 12 is installed between the shock absorption piston 13 and a limit block to increase the shock absorption elastic force of the pneumatic shock absorption chamber 15. The spring can be used alone, or the elastic member can be used alone, that is, elastic rubber can be used. Of course, both can be added and used at the same time.

[0081] Among them, an oil storage hole is also provided on the moving surface of the shock-absorbing piston 13, and the moving surface of the shock-absorbing piston 13 is set as a conical guide surface. When the shock-absorbing piston 13 moves, the lubricating oil enters the oil storage hole through impact. The design of the oil storage hole allows the impact force to squeeze the oil into the oil storage hole during impact, thereby increasing the overall sealing and improving the shock-absorbing effect. Excess pressure can enter the oil storage hole for dispersion, and the oil storage hole can be used for defoaming.

[0082] like Figures 8-12 As shown, the damping member 4 includes a damping cylinder 41, a damping rod 42 is movably arranged in the damping cylinder 41, one end of the damping rod 42 extends into the damping cylinder 41 and is connected to a damping piston 51, and the other end passes through the damping sealing plug on the damping cylinder 41 and extends to the outside and is connected to the second connecting bracket 5;

[0083] The damping size adjustment mechanism is arranged in the damping cylinder 41, and a first baffle 50 is provided at the upper end of the damping piston 51, and a second baffle 52 is provided at the lower end of the damping piston 51. The first baffle 50 and the second baffle 52 are both formed with an inwardly recessed air avoidance area, that is, the first baffle 50 and the second baffle 52 are triangular in shape, rather than circular, in this embodiment, and the damping piston 51 has a movable stroke between the first baffle 50 and the second baffle 52.

[0084] In order to achieve different adjustments of the damping size during the two-way action, the key point of the utility model is that the damping piston 51 has an open cavity 54, and the bottom surface of the open cavity 54 is provided with an oil inlet and outlet hole 55. The oil inlet and outlet holes 55 are large enough to be sealed after being contacted by the baffles, so the position corresponding to the oil inlet and outlet holes 55 between the first baffle 50 and the second baffle 52 is sealed. When the damping piston 51 leans against one of the baffles, the sealing of the oil inlet and outlet holes 55 can be achieved. A connecting rod 53 is provided at the bottom of the damping rod 42. The first baffle 50 and the second baffle 52 are both fixedly mounted on the connecting rod 53. The damping piston 51 is movably mounted on the connecting rod 53. The connecting rod 53 passes through the oil inlet and outlet holes 55, and the aperture of the oil inlet and outlet holes 55 is larger than the outer diameter of the connecting rod 53. The outer diameters of the first baffle 50 and the second baffle 52 are equal to the outer diameter of the damping piston 51.

[0085] The damping pistons 51 in each damping member 4 are installed in opposite directions, that is, the opening cavity 54 of the damping piston 51 in one damping member 4 faces downward, while the opening cavity 54 of the other damping piston 51 faces upward. When the opening cavity 54 of the damping piston 51 faces downward, when the damping piston 51 moves downward, the damping piston 51 leans against the first baffle 50, and the first baffle 50 seals the oil inlet and outlet holes 55. At this time, the damping piston 51 has a decreasing damping force; when the damping piston 51 moves upward, the damping piston 51 leans against the second baffle 52. At this time, the oil inlet and outlet holes 55 are open, and the damping piston 51 does not generate damping.

[0086] When the opening cavity 54 of the damping piston 51 faces upward, when the damping piston 51 moves downward, the damping piston 51 leans against the first baffle 50, and the inlet and outlet oil holes 55 are connected. At this time, the damping piston 51 does not produce damping; when the damping piston 51 moves upward, the damping piston 51 leans against the second baffle 52, and the inlet and outlet oil holes 55 are sealed by the second baffle 52. At this time, the damping piston 51 has an upward damping force. In this way, when one of the damping members 4 produces damping, the other damping member 4 does not produce damping, that is, only one damping member 4 is working during the downward compression or retraction process, and the other damping member 4 is in an idle stroke action without damping. Therefore, it is only necessary to adjust the damping size of the two damping cylinders 41 through this setting to obtain different damping sizes during downward compression and retraction, thereby achieving the purpose of forming variable damping in both directions.

[0087] like Figure 8 The damping adjustment mechanism shown includes:

[0088] The damping adjustment cylinder 49 is installed in the damping cylinder 41 and is sleeved on the outside of the damping rod 42 and the damping piston 51. The damping adjustment rod has a damping adjustment chamber, and the damping piston 51 is movably sealed in the damping adjustment chamber.

[0089] The damping adjustment rod 72 has a top fixedly connected to the bottom of the damping adjustment cylinder 49, and its bottom extends to the outside of the damping cylinder 41 and is connected to an adjustment knob 7. A ball 57 fixed point mechanism is also provided between the damping adjustment rod 72 and the damping cylinder 41. Figure 11 As shown;

[0090] The specific damping adjustment principle is as follows:

[0091] The outside of the damping adjustment cylinder 49 is provided with a plurality of oil path grooves 47 arranged side by side from top to bottom, and a penetrating oil guide hole 48 is opened at the initial end of each oil path groove 47, and an oil drain groove 58 is opened longitudinally in the damping cylinder 41. The outer wall surface of the damping adjustment cylinder 49 is in sealing contact with the inner wall surface of the damping cylinder 41. When the damping adjustment cylinder 49 is rotated and one end of the oil path groove 47 is connected to the oil drain groove 58, the oil in the damping adjustment cylinder 49 is squeezed out through the oil guide hole 48 and enters the oil drain groove 58 through the oil path groove 47. The farther the circumferential distance between the oil guide hole 48 and the oil drain groove 58 is, the greater the damping force of the damping piston 51 is. The closer the circumferential distance between the guide hole and the oil drain groove 58 is, the smaller the damping force of the damping piston 51 is. Figure 12 As shown;

[0092] By turning the adjustment knob 7 outside the damping adjustment rod 72, the circumferential distance between the oil channel groove 47 and the oil drain groove 58 can be adjusted. Figure 12 In the embodiment, the oil guide hole 48 is at the farthest end of the oil drain groove 58, and the rotation direction of the entire damping adjustment cylinder 49 is counterclockwise. Figure 12 There is no space in the middle oil path groove 47 opposite to the oil drain groove 58, so the entire damping element 4 is locked and cannot discharge oil, and the damping force is the largest. When it rotates counterclockwise, the oil guide hole 48 rotates counterclockwise and will slowly approach the oil drain groove 58. At this time, the circumferential distance of the oil path groove 47 becomes shorter. When the damping piston 51 drives the oil to be discharged through the oil guide hole 48, the oil will enter the oil path groove 47. Therefore, as long as the damping adjustment cylinder 49 is rotated, the circumferential distance between the oil path groove 47 and the oil drain groove 58 can be adjusted. The shorter the distance, the smaller the damping, and the larger the distance, the greater the damping.

[0093] A linear bearing 44 is mounted on the top of the damping adjustment cylinder 49 to enhance the upward and downward guiding capability of the damping rod 42. The linear bearing 44 has at least two oil return ports 46 that communicate with the interior of the damping adjustment cylinder 49. The oil flows through the oil channel groove 47 and then enters the oil drain groove 58. The oil then flows through the oil drain groove 58 and is discharged from the oil return port 46 on the top of the linear bearing 44.

[0094] Among them, a defoamer 45 is also installed on the damping rod 42 at the upper end of the linear bearing 44. The defoamer 45 is provided with multiple defoaming holes. The oil discharged from the oil return port 46 enters the defoamer 45 for storage and defoaming. Due to the above structure, the oil in the oil drain tank 58 can be depressurized and stored by the defoamer 45, which can eliminate bubbles and reduce the requirements for sealing.

[0095] Among them, the ball 57 fixed-point mechanism includes a support spring 56 and a ball 57. A plurality of arc-shaped fixed-point grooves 71 are provided on the circumferential surface of the damping adjustment rod 72. One end of the support spring 56 is installed in the damping cylinder 41, and the other end pushes out the ball 57 and makes the ball 57 buckle into the arc-shaped fixed-point groove 71. When rotating, the ball 57 is used to reach a fixed point, and there will be a certain sound when rotating, achieving a prompt effect. At the same time, the arc-shaped fixed-point groove 71 can also be used as a gear. Each rotation is a fixed-point rotation, and the rotation amplitude is fixed, which can also allow the user to know the current oil circuit position more clearly. Example 2:

[0096] like Figure 13 As shown, this embodiment is a single-piston pull-type shock absorber, and its working principle is the same as that of embodiment 1, except that this embodiment is a single piston. Example 3:

[0097] like Figure 14 As shown, this embodiment is a single-piston compression shock absorber, which has the same working principle as embodiment 1. The difference is that this embodiment is a single-piston compression type, the shock-absorbing piston 13 is located at the upper end, and only one shock-absorbing air chamber is used. Example 4:

[0098] like Figure 15 As shown, this embodiment is a compression-type double shock absorber, which has the same structure and working principle as embodiment 1. The difference is that this embodiment is compression-type, that is, the shock-absorbing piston 13 is located in the upper end space, and the bottom is a shock-absorbing air chamber. Example 5:

[0099] like Figure 16 As shown, a pull-and-compression damping shock absorber of the present invention comprises a shock absorbing shell 2, wherein at least one sealed air storage cavity is provided in the shock absorbing shell;

[0100] A shock-absorbing piston 13 is disposed in each air storage cavity, and an air-filled shock-absorbing cavity 15 is formed in the air storage cavity by the shock-absorbing piston;

[0101] A shock-absorbing connecting rod 9, one end of which is connected to the shock-absorbing piston, and the other end of which passes through the shock-absorbing housing and is connected to a first connecting bracket 1;

[0102] When the top space of the shock-absorbing piston forms an air-filled shock-absorbing chamber, it is a pull-type shock absorber. When the bottom space of the shock-absorbing piston forms an air-filled shock-absorbing chamber, it is a compression-type shock absorber.

[0103] An air charging channel 14 is provided at the upper and lower ends of the shock-absorbing housing corresponding to the air storage cavity. Both sides of the air charging channel are open, and an air charging port is formed at one side of the air charging channel. An air nozzle 3 is installed in the air charging port through a thread. A blocking port 16 is formed at the other side of the air charging channel. A locking sealing plug 8 is installed in the air charging port through a thread.

[0104] The bottom of the blocking port is provided with a conductive air guide hole 17 at the position corresponding to the inflatable shock absorbing cavity. When the locking sealing plug is not locked, the inflatable shock absorbing cavity is connected to the inflation channel through the blocking port. When the locking sealing plug is threadedly locked, the blocking port and the air guide hole are sealed by the locking sealing plug, so that each inflatable shock absorbing cavity becomes an independent chamber.

[0105] A dustproof sealing plug and a lubricating sealing plug 10 are installed at the position where the shock-absorbing connecting rod passes through the shock-absorbing shell. The dustproof sealing plug and the lubricating sealing plug are respectively installed at the top position of the shock-absorbing shell, and the shock-absorbing connecting rod passes through the dustproof sealing plug and the lubricating sealing plug.

[0106] A shock-absorbing elastic reinforcement member 12 is also provided in the inflatable shock-absorbing chamber. The shock-absorbing elastic reinforcement member is a spring and / or an elastic member. The shock-absorbing elastic reinforcement member is installed between the shock-absorbing piston and a limit block to increase the shock-absorbing elastic force of the inflatable shock-absorbing chamber.

[0107] An oil storage hole is also provided on the moving surface of the shock-absorbing piston, and the moving surface of the shock-absorbing piston is configured as a conical guide surface. When the shock-absorbing piston moves, the lubricating oil enters the oil storage hole through impact.

[0108] In this embodiment, the drag-type damping shock absorber of the present invention can be realized without using a damping member. The damping principle is the same as that of the above embodiment and will not be described in detail.

[0109] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that do not require creative effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. A pull-compression damping shock absorber, characterized in that: include: A shock-absorbing shell (2), wherein at least one sealed air storage cavity is provided in the shock-absorbing shell (2); A shock-absorbing piston (13) is disposed in each air storage cavity, and an air-filled shock-absorbing cavity (15) is formed in the air storage cavity by the shock-absorbing piston (13); A shock-absorbing connecting rod (9), one end of which is connected to the shock-absorbing piston (13), and the other end of which passes through the shock-absorbing housing (2) and is connected to a first connecting bracket (1); When the top space of the shock absorbing piston (13) forms an air-filled shock absorbing chamber (15), it is a pull-type shock absorber; when the bottom space of the shock absorbing piston (13) forms an air-filled shock absorbing chamber (15), it is a compression-type shock absorber; At least one damping member (4), each of the at least one damping member (4) is mounted on one side of the shock-absorbing housing (2) via a fixing plate (6), and a second connecting bracket (5) is provided at the top power end of the at least one damping member (4); At least one damping member (4) is provided with a damping size adjustment mechanism, and the damping size of each damping member (4) is adjusted to be the same or different by the damping size adjustment mechanism, and the damping size of each damping member (4) when pressed down and moved up can be adjusted to be the same or different by the damping size adjustment mechanism.

2. The pull-compression damping shock absorber according to claim 1, characterized in that: An air charging channel (14) is provided at the upper and lower ends of the air storage cavity in the shock-absorbing housing (2), and both sides of the air charging channel (14) are open. An air charging port is formed at one side of the air charging channel (14), and an air nozzle (3) is installed through a thread on the air charging port. A blocking port (16) is formed at the other side of the air charging channel (14), and a locking sealing plug (8) is installed through a thread on the blocking port (16). The bottom of the blocking port (16) is provided with a conductive air guide hole (17) at a position corresponding to the inflatable shock absorbing chamber (15). When the locking sealing plug (8) is not locked, the inflatable shock absorbing chamber (15) is communicated with the inflatable channel (14) through the blocking port (16). When the locking sealing plug (8) is threadedly locked, the blocking port (16) and the air guide hole (17) are sealed by the locking sealing plug (8), so that each inflatable shock absorbing chamber (15) becomes an independent chamber. A dustproof sealing plug (10) and a lubricating sealing plug (11) are installed at the position where the shock-absorbing connecting rod (9) passes through the shock-absorbing housing (2); the dustproof sealing plug (10) and the lubricating sealing plug (11) are respectively installed at the top position of the shock-absorbing housing (2); and the shock-absorbing connecting rod (9) passes through the dustproof sealing plug (10) and the lubricating sealing plug (11); A shock-absorbing elastic reinforcement member (12) is further provided in the pneumatic shock-absorbing chamber (15). The shock-absorbing elastic reinforcement member (12) is a spring and / or an elastic member. The shock-absorbing elastic reinforcement member (12) is installed between the shock-absorbing piston (13) and a limit block to increase the shock-absorbing elastic force of the pneumatic shock-absorbing chamber (15). An oil storage hole is further provided on the moving surface of the shock-absorbing piston (13), and the moving surface of the shock-absorbing piston (13) is set as a conical guide surface. When the shock-absorbing piston (13) moves, lubricating oil enters the oil storage hole through impact.

3. The pull-compression damping shock absorber according to claim 1, characterized in that: The damping member (4) includes a damping cylinder (41), a damping rod (42) is movably arranged in the damping cylinder (41), one end of the damping rod (42) extends into the damping cylinder (41) and is connected to a damping piston (51), and the other end passes through the damping sealing plug on the damping cylinder (41) and extends to the outside and is connected to the second connecting bracket (5); The damping size adjustment mechanism is arranged in the damping cylinder (41), a first baffle (50) is arranged at the upper end of the damping piston (51), and a second baffle (52) is arranged at the lower end of the damping piston (51), the first baffle (50) and the second baffle (52) both form an inwardly concave air avoidance area, and the damping piston (51) has a movable stroke between the first baffle (50) and the second baffle (52).

4. The pull-compression damping shock absorber according to claim 3, characterized in that: The damping piston (51) has an open cavity (54), and an oil inlet and outlet hole (55) is provided on the bottom surface of the open cavity (54). A connecting rod (53) is provided at the bottom of the damping rod (42). The first baffle (50) and the second baffle (52) are both fixedly mounted on the connecting rod (53). The damping piston (51) is movably mounted on the connecting rod (53). The connecting rod (53) passes through the oil inlet and outlet hole (55), and the aperture of the oil inlet and outlet hole (55) is larger than the outer diameter of the connecting rod (53). The outer diameters of the first baffle (50) and the second baffle (52) are equal to the outer diameter of the damping piston (51). The damping piston (51) in each damping member (4) is installed in opposite directions. When the opening cavity (54) of the damping piston (51) faces downward, when the damping piston (51) moves downward, the damping piston (51) leans against the first baffle (50), and the first baffle (50) seals the oil inlet and outlet holes (55). At this time, the damping piston (51) has a decreasing damping force; when the damping piston (51) moves upward, the damping piston (51) leans against the second baffle (52), and the oil inlet and outlet holes (55) are connected. At this time, the damping piston (51) does not generate damping. When the opening cavity (54) of the damping piston (51) faces upward, when the damping piston (51) moves downward, the damping piston (51) leans against the first baffle (50), and the inlet and outlet oil holes (55) are connected. At this time, the damping piston (51) does not generate damping; when the damping piston (51) moves upward, the damping piston (51) leans against the second baffle (52), and the inlet and outlet oil holes (55) are sealed by the second baffle (52). At this time, the damping piston (51) has an upward damping force.

5. The pull-compression damping shock absorber according to claim 4, characterized in that: The damping adjustment mechanism includes: A damping adjustment cylinder (49) is installed in the damping cylinder (41) and is sleeved on the outside of the damping rod (42) and the damping piston (51). The damping adjustment rod has a damping adjustment chamber, and the damping piston (51) is movably sealed and installed in the damping adjustment chamber. A damping adjustment rod (72) has a top portion fixedly connected to the bottom portion of the damping adjustment cylinder (49), a bottom portion extending outside the damping cylinder (41) and connected to an adjustment knob (7), and a ball (57) fixed point mechanism is further provided between the damping adjustment rod (72) and the damping cylinder (41); The damping adjustment cylinder (49) is provided with a plurality of oil path grooves (47) arranged side by side from top to bottom on the outside, and an oil guide hole (48) is provided at the initial end of each oil path groove (47). An oil drain groove (58) is provided longitudinally in the damping cylinder (41). The outer wall surface of the damping adjustment cylinder (49) is in sealing contact with the inner wall surface of the damping cylinder (41). When the damping adjustment cylinder (49) is rotated and one end of the oil path groove (47) is communicated with the oil drain groove (58), the oil in the damping adjustment cylinder (49) is squeezed out through the oil guide hole (48) and enters the oil drain groove (58) through the oil path groove (47). The farther the circumferential distance between the oil guide hole (48) and the oil drain groove (58) is, the greater the damping force of the damping piston (51) is. The closer the circumferential distance between the oil guide hole and the oil drain groove (58) is, the smaller the damping force of the damping piston (51) is. The circumferential distance between the oil passage groove (47) and the oil drain groove (58) is adjusted by rotating the adjustment knob (7) outside the damping adjustment rod (72).

6. The pull-compression damping shock absorber according to claim 5, characterized in that: A linear bearing (44) is installed on the top of the damping adjustment cylinder (49), and the linear bearing (44) has at least two oil return ports (46), and the oil return ports (46) are communicated with the interior of the damping adjustment cylinder (49); A defoamer (45) is also installed on the damping rod (42) at the upper end of the linear bearing (44). The defoamer (45) is provided with a plurality of defoaming holes. The oil discharged from the oil return port (46) enters the defoamer (45) for storage and defoaming.

7. The pull-compression damping shock absorber according to claim 5, characterized in that: The ball fixed-point mechanism comprises a support spring (56) and a ball (57); a plurality of arc-shaped fixed-point grooves (71) are provided on the circumferential surface of the damping adjustment rod (72); one end of the support spring (56) is installed in the damping cylinder (41); the other end pushes out the ball (57) and makes the ball (57) buckle into the arc-shaped fixed-point groove (71).

8. A pull-compression damping shock absorber, characterized in that: include: A shock-absorbing shell (2), wherein at least one sealed air storage cavity is provided in the shock-absorbing shell (2); A shock-absorbing piston (13) is disposed in each air storage cavity, and an air-filled shock-absorbing cavity (15) is formed in the air storage cavity by the shock-absorbing piston (13); A shock-absorbing connecting rod (9), one end of which is connected to the shock-absorbing piston (13), and the other end of which passes through the shock-absorbing housing (2) and is connected to a first connecting bracket (1); When the top space of the shock-absorbing piston (13) forms an air-filled shock-absorbing chamber (15), it is a pull-type shock absorber; when the bottom space of the shock-absorbing piston (13) forms an air-filled shock-absorbing chamber (15), it is a compression-type shock absorber.

9. The pull-compression damping shock absorber according to claim 8, characterized in that: An air charging channel (14) is provided at the upper and lower ends of the air storage cavity in the shock-absorbing housing (2), and both sides of the air charging channel (14) are open. An air charging port is formed at one side of the air charging channel (14), and an air nozzle (3) is installed through a thread on the air charging port. A blocking port (16) is formed at the other side of the air charging channel (14), and a locking sealing plug (8) is installed through a thread on the blocking port (16). The bottom of the blocking port (16) is provided with a conductive air guide hole (17) at a position corresponding to the inflatable shock absorbing chamber (15). When the locking sealing plug (8) is not locked, the inflatable shock absorbing chamber (15) is communicated with the inflatable channel (14) through the blocking port (16). When the locking sealing plug (8) is threadedly locked, the blocking port (16) and the air guide hole (17) are sealed by the locking sealing plug (8), so that each inflatable shock absorbing chamber (15) becomes an independent chamber. A dustproof sealing plug (10) and a lubricating sealing plug (11) are installed at the position where the shock-absorbing connecting rod (9) passes through the shock-absorbing housing (2). The dustproof sealing plug (10) and the lubricating sealing plug (11) are respectively installed at the top position of the shock-absorbing housing (2), and the shock-absorbing connecting rod (9) passes through the dustproof sealing plug (10) and the lubricating sealing plug (11).

10. The pull-compression damping shock absorber according to claim 8, characterized in that: A shock-absorbing elastic reinforcement member (12) is further provided in the pneumatic shock-absorbing chamber (15). The shock-absorbing elastic reinforcement member (12) is a spring and / or an elastic member. The shock-absorbing elastic reinforcement member (12) is installed between the shock-absorbing piston (13) and a limit block to increase the shock-absorbing elastic force of the pneumatic shock-absorbing chamber (15). An oil storage hole is also provided on the moving surface of the shock-absorbing piston (13), and the moving surface of the shock-absorbing piston (13) is configured as a conical guide surface. When the shock-absorbing piston (13) moves, lubricating oil enters the oil storage hole through impact.

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