Hybrid air shock absorber

Abstract

The utility model discloses a mixed type air shock absorber which comprises a shock absorber shell, a first air cylinder, a second air cylinder and a third air cylinder, the interior of the shock absorber shell is hollow to form a sliding cavity, and a piston is arranged in the sliding cavity; the shock absorption rod is connected with the piston, and the other end of the shock absorption rod penetrates through a through groove in the shock absorber shell and is arranged outside; the interior of the damping rod is hollowed out to form a spring groove, the elastic element is arranged in the damping rod, and the other end of the elastic element penetrates through the piston. The shock absorber end cover is connected with the other end of the shock absorber shell, and the space between the shock absorber end cover and the shock absorber shell is sealed through a double-sealing structure; and the elastic element on the shock absorption rod is in contact with the shock absorber end cover. According to the shock absorber, the spring groove is filled with the silencing lubricating oil, the gas sealing structure is combined, the impact force reaction in the piston rebounding process is optimized, the adjustable gas hole and the adjustable gas nozzle are arranged, a user can adjust the internal pressure by injecting compressed gas, the shock absorption effect is enhanced, and the service life of the shock absorber is prolonged. The combination of the spring and the compressed gas provides smoother springback experience, the use comfort and adaptability of the shock absorber are further improved, and the requirements of different use scenes are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shock absorber, concretely relates to a hybrid air shock absorber. BACKGROUND

[0002] The traditional piston type belongs to vertical compression structure, its compression is higher, but the stroke is shorter under small size, the pressure change is relatively abrupt, the reaction is too sensitive, after loading, because its reaction speed is too fast, leading to the body comfort during the motion of the vehicle is poor. The plunger type structure is relatively flat, but because the compression ratio is too small, the stroke is too flat, the shock absorbing effect is weak, and it is easy to directly touch the bottom. The current popular shock absorbing scheme in the industry is mainly piston type or plunger type, sometimes the piston type structure increases the hydraulic system inside to adjust the rebound speed, but the cost is higher, and the plunger structure is not fixed, the piston is easy to drift, leading to shock absorbing failure. The traditional micro two-wheeled vehicle adopts the composite hydraulic structure shock absorbing driven by air, its structure is complex, maintenance is difficult, and the hydraulic oil is easy to produce bubbles in long-term reciprocating motion, leading to uneven internal pressure, finally failure, jamming or oil leakage problem, and the shock absorbing effect is invalid. In order to solve the current industry drawbacks, improve the user experience of small two-wheeled vehicle, a new innovative structure is urgently needed to solve the current industry problems. SUMMARY

[0003] The utility model solves the technical problem that a hybrid air shock absorber is provided to solve the problems in the background art.

[0004] The utility model discloses a hybrid air shock absorber is realized through the following technical scheme, comprising:

[0005] The shock absorber shell is hollow in the inside and forms a sliding cavity, and a piston is arranged in the sliding cavity.

[0006] The shock absorbing rod is connected with the piston, and the other end of the shock absorbing rod passes through the through slot on the shock absorber shell and is placed outside.

[0007] The shock absorber end cover is connected with the other end of the shock absorber shell, and the shock absorber end cover and the shock absorber shell are sealed by a double sealing structure.

[0008] The shock absorbing rod and the through slot have a sealing structure, a first buffer chamber is formed between one end of the piston and the shock absorber shell, and a second buffer chamber is formed between the other end of the piston and the shock absorber end cover.

[0009] Preferably, the sealing structure comprises a necked end formed by necking one end of the shock absorber shell, and the necked end of the shock absorber shell is sequentially provided with a dust ring, a gas blocking seal and a first linear bearing from outside to inside, and the shock absorbing rod is arranged through the necked end and contacts the dust ring, the gas blocking seal and the first linear bearing.

[0010] Preferably, the spring slot is filled with sound-damping lubricating oil, and the sound-damping lubricating oil contacts the elastic element.

[0011] Preferably, the other end of the shock absorbing rod and the shock absorber end cover are both provided with air holes, and the air holes are both connected with air nozzles; or one of the air holes is connected with an air nozzle, and the other air hole is sealed by a screw or is not provided with a hole and is not provided with an air nozzle, and the directions of the air nozzles can be inconsistent and can be rotated.

[0012] Preferably, the side surface of the piston is sequentially provided with a first sealing ring and a second linear bearing, the piston is guided through the second linear bearing and seals the first buffer chamber through the first sealing ring; the outer side of the connection end of the shock absorbing rod is provided with a slope, and a buffer pad is arranged on the shock absorbing rod, and the contact area of the buffer pad and the piston is increased through the slope.

[0013] Preferably, the connection part of the shock absorbing rod and the piston is provided with a first sealing pad, so as to prevent the first buffer chamber and the second buffer chamber from being communicated through the gap of the connection part.

[0014] Preferably, the outer side of the shock absorber shell is provided with external threads, the inner side of the shock absorber end cover is provided with internal threads, and the shock absorber shell and the shock absorber end cover are connected through the internal threads and the external threads.

[0015] The double sealing structure comprises a second sealing pad arranged in the shock absorber end cover and a second sealing ring arranged on the side surface of the shock absorber shell, and the double sealing is realized through the second sealing pad and the second sealing ring.

[0016] The utility model discloses the beneficial effect is:

[0017] The necked end of the shock absorber shell is sequentially provided with a dust ring, a gas blocking seal and a first linear bearing from outside to inside, and the shock absorbing rod is arranged through the necked end and contacts the dust ring, the gas blocking seal and the first linear bearing, the shock absorbing rod of the utility model stretches to the outside of the shock absorber shell, the sealing structure is different from the design that the sealing assembly is installed in the shock absorber shell in the traditional, thereby effectively avoiding the accumulation of internal dust, prolonging the service life of the sealing assembly, and improving the dustproof and oil-proof effect of the shock absorber in long-term use.

[0018] The spring groove of the utility model is filled with silencer lubricating oil, and the gas-sealed rebound structure formed at the bottom is used to optimize the impact force reaction during the piston rebound process. After the shock absorber is assembled, when the piston is compressed by external force and rebounds quickly, this structure plays a recoil role, which can effectively alleviate the rapid rebound of the spring. As the barrel length increases, the increase in air storage during initial assembly reduces the rebound speed, thereby enhancing the comfort and user experience of the shock absorber.

[0019] The utility model adds a linear bearing structure to the shock absorber, which can effectively limit the lateral deviation of the piston rod and reduce the displacement deviation of the piston rod during operation, thereby improving the stability and reliability of the shock absorber and further ensuring the stable output of the shock absorption effect;

[0020] The other end of the shock absorber rod and the shock absorber end cover of the utility model are both provided with air holes, and the air holes are connected with air nozzles; or one of the air holes is connected to the air nozzle, and the other air hole is sealed by a screw. The directions of the air nozzles can be inconsistent, and the air nozzle can be rotatably assembled on the piston rod. The utility model provides the air holes and the air nozzles, so that the user can adjust the pressure inside the shock absorber by injecting gas to achieve the adjustment of the shock absorption effect. Inflation can be carried out by selecting two or one air nozzle, which is more flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model in a contracted state;

[0024] Figure 3 This is a schematic cross-sectional view of the utility model in an extended state;

[0025] Figure 4 This is a schematic diagram of the structure of the shock absorber housing of the present utility model;

[0026] Figure 5 This is a schematic diagram of the installation of the present utility model. DETAILED DESCRIPTION

[0027] All features disclosed in this specification, and / or all steps of any methods or processes disclosed in this specification, can be combined in any combination, except combinations where at least some of such features and / or steps are mutually exclusive.

[0028] As Figures 1-4 indicated in the description, the utility model relates to a kind of hybrid air shock absorber, comprising:

[0029] Shock absorber shell 1, the hollow sliding cavity 3 is formed in the inside of the shock absorber shell 1, and piston 4 is arranged in the sliding cavity 3;

[0030] Shock absorbing rod 2, the shock absorbing rod 2 is connected with piston 4, and the other end of the shock absorbing rod 2 passes through the through slot on the shock absorber shell 1 and is placed outside;The shock absorbing rod 2 is hollow to form spring groove 5 inside, and elastic element 6 is arranged in the shock absorbing rod 2, and the other end of the elastic element 6 is arranged through piston 4, in the embodiment, the elastic element can be shock absorbing spring, or other elastic rubber material is made;

[0031] Shock absorber end cover 3, the shock absorber end cover 3 is connected with the other end of the shock absorber shell 1, and the shock absorber end cover and the shock absorber shell 1 are sealed by double sealing structure;The elastic element 6 on the shock absorbing rod 2 is in contact with the shock absorber end cover 3;

[0032] Among them, the shock absorbing rod 2 and the through slot have sealing structure, and the first buffer chamber 14 is formed between the one end of the piston 4 and the shock absorber shell 1, and the second buffer chamber 15 is formed between the other end of the piston 4 and the shock absorber end cover.

[0033] Among them, the sealing structure includes the necking end 8 formed by necking processing on one end of the shock absorber shell, and the necking end 8 of the shock absorber shell is sequentially provided with dust ring 9, gas blocking seal 10 and first linear bearing 11 from outside to inside, the shock absorbing rod 2 passes through the necking end 8 and is in contact with the dust ring 9, the gas blocking seal 10 and the first linear bearing 11, to ensure the smooth operation of the shock absorber.

[0034] Among them, the spring groove 5 is filled with sound-damping lubricating oil, and the sound-damping lubricating oil is in contact with the elastic element 6, to prevent the elastic element 6 from making noise when compressed in the spring groove 5, and to play the roles of lubrication and damping. Of course, the spring can also use polyurethane variable elastomer or other elastic materials, or single or composite devices, and the purpose of filling the sound-damping lubricating oil is to solve the problem that a large pressure value is needed when pure gas is filled, to reduce the amount of air filled, increase the pressure value of shock absorbing depression, make the shock absorbing more gentle, and the depression speed slower, and the rebound also slower.

[0035] One end of the shock rod 2 and the shock absorber end cover are provided with air holes, and the air holes are connected with air taps; or one air hole is connected with an air tap, and the other air hole is sealed by a screw or is not provided with an air hole and is not provided with an air tap, and the directions of the air taps can be inconsistent and can be rotated; the pressure in the shock absorber is adjusted by injecting air into the air holes, so that the normal working state of the shock absorber is maintained.

[0036] In addition, the side surface of the piston 4 is sequentially provided with a first sealing ring 12 and a second linear bearing 13, the piston 4 is guided through the second linear bearing 13 and seals the first buffer chamber 14 through the first sealing ring 12; the piston 4 is provided with a slope outside the connecting end of the shock rod 2, and a buffer pad is sleeved on the shock rod 2, and the contact area of the buffer pad and the piston 4 is increased through the slope.

[0037] In addition, a first sealing pad 16 is arranged at the connecting position of the shock rod 2 and the piston 4, so as to prevent the first buffer chamber and the second buffer chamber from being communicated through the gap at the connecting position, and the sealing performance of the shock absorber is ensured.

[0038] In addition, the outer side of the shock absorber shell 1 is provided with external threads, the inner side of the shock absorber end cover is provided with internal threads, and the shock absorber shell 1 and the shock absorber end cover are connected through the internal threads and the external threads.

[0039] The double sealing structure includes a second sealing pad 18 arranged in the shock absorber end cover and a second sealing ring 17 arranged on the side surface of the shock absorber shell 1, and the double sealing is realized through the second sealing pad 18 and the second sealing ring 17, so as to ensure the air tightness and the shock absorbing effect of the shock absorber.

[0040] The installation schematic of the utility model is shown as Figure 5 The first support 100 is connected with a vehicle body, the height of the shock absorber to the chassis of the vehicle body is adjusted through the first support 100, and the adjusting mode includes but is not limited to any structure capable of increasing friction; the second support 200 is a parallel auxiliary support used when a plurality of shock absorbers are installed, and is used for improving the control of the vehicle and reducing the shock distortion to be more stable; the number of the installed shock absorbers is one or more than one, and the application can be adjusted according to different occasions.

[0041] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any change or replacement without creative labor should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be limited by the protection scope defined in the claims.

Claims

1. A hybrid air shock absorber, characterized in that: include: A shock absorber housing (1), wherein the interior of the shock absorber housing (1) is hollow to form a sliding cavity (3), and a piston (4) is provided in the sliding cavity (3); A shock-absorbing rod (2), wherein the shock-absorbing rod (2) is connected to the piston (4), and the other end of the shock-absorbing rod (2) passes through a through slot on the shock-absorbing housing (1) and is placed outside; the interior of the shock-absorbing rod (2) is hollowed out to form a spring slot (5), and an elastic element (6) is arranged in the shock-absorbing rod (2), and the other end of the elastic element (6) passes through the piston (4); A shock absorber end cover, the shock absorber end cover is connected to the other end of the shock absorber housing (1), and a double sealing structure is used to seal the shock absorber end cover and the shock absorber housing (1); the elastic element (6) on the shock absorber rod (2) is in contact with the shock absorber end cover; A sealing structure is provided between the shock absorber rod (2) and the through groove, a first buffer chamber (14) is formed between one end of the piston (4) and the shock absorber housing (1), and a second buffer chamber (15) is formed between the other end of the piston (4) and the shock absorber end cover.

2. The hybrid air shock absorber according to claim 1, characterized in that: The sealing structure comprises a constricted end (8) formed by constricting one end of the shock absorber housing, and the constricted end (8) of the shock absorber housing is provided with a dust ring (9), an air-blocking seal (10) and a first linear bearing (11) in sequence from the outside to the inside; the shock absorber rod (2) is provided through the constricted end (8) and contacts the dust ring (9), the air-blocking seal (10) and the first linear bearing.

3. The hybrid air shock absorber according to claim 1, characterized in that: The spring groove (5) is filled with silencer lubricating oil, and the silencer lubricating oil is in contact with the elastic element (6).

4. The hybrid air shock absorber according to claim 1, characterized in that: The other end of the shock absorber rod (2) and the shock absorber end cover are both provided with air holes, and the air holes are both connected to air nozzles; or one of the air holes is connected to the air nozzle, and the other air hole is sealed by a screw, or only one hole is opened and the other is not opened and not equipped with an air valve.

5. The hybrid air shock absorber according to claim 1, characterized in that: The side of the piston (4) is sequentially provided with a first sealing ring (12) and a second linear bearing. The piston (4) is guided by the second linear bearing (13) and the first buffer chamber (14) is sealed by the first sealing ring (12). The outer side of the connecting end of the piston (4) and the shock-absorbing rod (2) has an inclination, and a buffer pad is sleeved on the shock-absorbing rod (2). The contact area between the buffer pad and the piston (4) is increased by setting the inclination.

6. The hybrid air shock absorber according to claim 1, characterized in that: A first sealing gasket (16) is provided at the connection between the shock-absorbing rod (2) and the piston (4), thereby preventing the first buffer chamber and the second buffer chamber from communicating through the gap at the connection.

7. The hybrid air shock absorber according to claim 1, characterized in that: The outer side of the shock absorber housing (1) is provided with an external thread, the inner side of the shock absorber end cover is provided with an internal thread, and the shock absorber housing (1) and the shock absorber end cover are connected via the internal thread and the external thread; The double sealing structure comprises a second sealing gasket (18) arranged inside the shock absorber end cover and a second sealing ring (17) arranged on the side of the shock absorber housing (1), and double sealing is achieved by the second sealing gasket (18) and the second sealing ring (17).

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