Shock absorber and vehicle

Abstract

The utility model discloses a shock absorber and a vehicle, which comprises a first cylinder body and a second cylinder body, the second cylinder body is sleeved outside the first cylinder body, and the first cylinder body and the second cylinder body can move relatively along the axial direction of the first cylinder body; one end of the piston assembly is connected to the bottom cover of the second barrel, the piston assembly extends into the first barrel, and the piston assembly divides the interior of the first barrel into a compression cavity and a recovery cavity; the buffering piece is arranged on the piston assembly in a sleeving mode and located between the first barrel and the bottom cover; the channel piece is arranged between the buffer piece and the bottom cover and is provided with a balance air channel; a ventilation hole is formed in the bottom cover, a circulation channel is formed between the buffering piece and the piston assembly and / or the second barrel, and the balance air channel is communicated with the ventilation hole and the circulation channel. According to the shock absorber, the balance air channel is formed by arranging the channel piece, the channel piece is not prone to being extruded to deform or damaged, then the integrity of the balance air channel can be guaranteed, and the shock absorber can stably conduct air pressure balance under the compression working condition or the recovery working condition.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a shock absorber and a vehicle. Background Art

[0002] In the related art, the shock absorber usually includes a first cylinder, a second cylinder and a piston assembly. The second cylinder is arranged outside the first cylinder and the first cylinder and the second cylinder can move relative to each other along the axial direction of the first cylinder. One end of the piston assembly is fixed to the bottom of the second cylinder and the other end extends into the first cylinder and separates a compression chamber and a recovery chamber in the first cylinder.

[0003] In addition, in the related art, a buffer is usually provided at the bottom of the second cylinder to prevent the first cylinder and the bottom of the second cylinder from colliding and being damaged, and a vent is provided at the bottom of the second cylinder, and a protrusion is constructed at the bottom of the buffer. The buffer forms an airway through the protrusion and the bottom of the second cylinder to achieve internal and external air pressure balance of the second cylinder.

[0004] However, due to the low strength of the buffer, when the first cylinder approaches the bottom of the second cylinder and squeezes the buffer, it is easy to cause the bulge at the bottom of the buffer to deform, thereby causing the airway to deform, making it difficult to inhale and exhaust. Moreover, long-term use can easily cause the bulge to be damaged, and the reliability of the airway structure is low. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a shock absorber that utilizes a channel member to construct a balancing air passage. The channel member is less susceptible to deformation or damage due to compression, resulting in increased reliability. This ensures the integrity of the balancing air passage, allowing the shock absorber to stably balance air pressure during compression or recovery operations.

[0006] The utility model also provides a vehicle with the shock absorber.

[0007] In order to achieve the above-mentioned purpose, according to the first aspect embodiment of the present utility model, a shock absorber is proposed, comprising: a first cylinder and a second cylinder, the second cylinder being sleeved outside the first cylinder, and the first cylinder and the second cylinder being movable relative to each other along the axial direction of the first cylinder; a piston assembly, one end of the piston assembly being connected to the bottom cover of the second cylinder, and the other end of the piston assembly extending into the first cylinder, the piston assembly and the first cylinder being movable relative to each other along the axial direction of the first cylinder, and the piston assembly being separated into a compression chamber and a recovery chamber in the first cylinder; a buffer member, the buffer member being sleeved on the piston assembly and located between the first cylinder and the bottom cover; a channel member, the channel member being arranged between the buffer member and the bottom cover, and the channel member being constructed with a balancing air channel; wherein the bottom cover is constructed with a vent hole, a flow channel being formed between the buffer member and the piston assembly and / or the second cylinder, and the balancing air channel being connected to the vent hole and the flow channel respectively.

[0008] Therefore, the shock absorber according to the embodiment of the present invention constructs a balanced air channel by setting a channel part. The channel part is not easily squeezed, deformed or damaged, and has higher reliability, thereby ensuring the integrity of the balanced air channel. The shock absorber can stably balance the air pressure under compression or recovery conditions.

[0009] According to some embodiments of the present invention, the channel member includes: a ventilation gasket, which is sleeved on the piston assembly and located between the buffer member and the bottom cover, the ventilation gasket is constructed with a balancing hole, and a first sub-channel is formed between the ventilation gasket and the piston assembly and / or the second cylinder; a support gasket, which is sleeved on the piston assembly and located between the buffer member and the ventilation gasket, and a second sub-channel is formed between the support gasket and the piston assembly and / or the second cylinder, the first sub-channel is respectively connected to the balancing hole and the second sub-channel, and the balancing hole, the first sub-channel and the second sub-channel jointly define the balancing air channel.

[0010] According to some embodiments of the present invention, the balancing hole includes: a connecting section, which is connected to the vent hole; a transition section, which extends radially along the ventilation gasket and is respectively connected to the connecting section and the first sub-channel.

[0011] According to some embodiments of the present invention, the width of the transition section gradually increases as it approaches the first sub-channel along the radial direction of the ventilation gasket.

[0012] According to some embodiments of the present invention, there are multiple balancing holes and they are arranged at intervals along the circumference of the ventilation gasket, and the first sub-channel is respectively connected to the multiple balancing holes; and there are multiple ventilation holes, and the multiple ventilation holes correspond one-to-one to the multiple balancing holes.

[0013] According to some embodiments of the present invention, the support gasket is connected to the buffer, and the ventilation gasket is connected to the bottom cover; or, both the support gasket and the ventilation gasket are connected to the buffer; or, both the support gasket and the ventilation gasket are connected to the bottom cover.

[0014] According to some embodiments of the present invention, the buffer is connected to the bottom cover, and the inner circumferential surface of the buffer is spaced from the piston assembly to define the circulation channel; or, the buffer is connected to the side of the first cylinder facing the bottom cover, and the outer circumferential surface of the buffer is spaced from the second cylinder to define the circulation channel; or, the inner circumferential surface of the buffer is spaced from the piston assembly to define the circulation channel, and the outer circumferential surface of the buffer is spaced from the second cylinder to define the circulation channel.

[0015] According to some embodiments of the present invention, the channel member is constructed as a plurality of protrusions and is provided on a side of the bottom cover facing the buffer member. The protrusions avoid the vent holes, and the balancing air channel is defined between the plurality of protrusions.

[0016] According to some embodiments of the present invention, the piston assembly includes: a piston rod, one end of the piston rod is connected to the bottom cover, and the other end of the piston rod extends into the first cylinder; a piston valve, the piston valve is arranged at the other end of the piston rod, and the piston valve separates the compression chamber and the recovery chamber in the first cylinder, and the compression chamber and the recovery chamber are selectively connected through the piston valve; a guide assembly, the guide assembly is sleeved on the piston rod and arranged in the first cylinder, the guide assembly is adjacent to the end of the first cylinder facing the bottom cover, and the guide assembly, the second cylinder and the first cylinder jointly define a balance air chamber.

[0017] According to a second aspect of the present invention, a vehicle is provided. The vehicle includes the shock absorber according to the first aspect of the present invention.

[0018] According to the vehicle of the second aspect embodiment of the utility model, by utilizing the shock absorber of the first aspect embodiment of the utility model, the shock absorber constructs a balancing air channel by setting a channel member. The channel member is not easily squeezed, deformed or damaged, and has higher reliability, thereby ensuring the integrity of the balancing air channel. The shock absorber can stably balance the air pressure during compression or recovery conditions.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 1 is a schematic structural diagram of a shock absorber according to an embodiment of the present utility model;

[0022] Figure 2 is a cross-sectional view of a shock absorber according to an embodiment of the present utility model;

[0023] Figure 3 yes Figure 2 An enlarged schematic diagram of the structure at A;

[0024] Figure 4 is an exploded view of a shock absorber according to an embodiment of the present utility model;

[0025] Figure 5 is an exploded view of a buffer member, a channel member, and a bottom cover according to an embodiment of the present utility model;

[0026] Figure 6 1 is a schematic structural diagram of a ventilation gasket according to an embodiment of the present utility model;

[0027] Figure 7 It is a structural schematic diagram of the bottom cover according to an embodiment of the utility model.

[0028] Reference numerals:

[0029] 1. Shock absorber;

[0030] 100, first cylinder; 110, compression chamber; 120, recovery chamber;

[0031] 200, second cylinder; 210, balance air chamber;

[0032] 300, piston assembly; 310, piston rod; 320, piston valve; 330, guide assembly;

[0033] 400, buffer member; 410, circulation channel;

[0034] 500, channel member; 510, balancing air channel; 520, ventilation gasket; 521, balancing hole; 522, connecting section; 523, transition section; 524, first sub-channel; 530, supporting gasket; 531, second sub-channel;

[0035] 600, bottom cover; 610, vent; 700, filter element; 800, dust cover. DETAILED DESCRIPTION

[0036] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0039] In the description of the present invention, “multiple” means two or more, and “several” means one or more.

[0040] The shock absorber 1 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0041] like Figure 1-Figure 7 As shown, the shock absorber 1 according to the embodiment of the present invention includes a first cylinder 100 , a second cylinder 200 , a piston assembly 300 , a buffer member 400 and a channel member 500 .

[0042] The second cylinder 200 is sleeved on the outside of the first cylinder 100, and the first cylinder 100 and the second cylinder 200 can move relative to each other along the axial direction of the first cylinder 100. One end of the piston assembly 300 is connected to the bottom cover 600 of the second cylinder 200, and the other end of the piston assembly 300 extends into the first cylinder 100. The piston assembly 300 and the first cylinder 100 can move relative to each other along the axial direction of the first cylinder 100. The piston assembly 300 separates the compression chamber 110 and the recovery chamber 120 in the first cylinder 100. The buffer component 400 is sleeved on the piston assembly 300 and is located between the first cylinder 100 and the bottom cover 600. The channel component 500 is arranged between the buffer component 400 and the bottom cover 600, and the channel component 500 is constructed with a balance air channel 510.

[0043] The bottom cover 600 is configured with a vent hole 610 , a flow channel 410 is formed between the buffer 400 and the piston assembly 300 and / or the second cylinder 200 , and the balancing air channel 510 is communicated with the vent hole 610 and the flow channel 410 respectively.

[0044] Among them, the first cylinder 100 and the second cylinder 200 can move relative to each other along the axial direction of the first cylinder 100, which means that the first cylinder 100 can move along the axial direction of the second cylinder 200 relative to the second cylinder 200, or the second cylinder 200 can move along the axial direction of the first cylinder 100 relative to the first cylinder 100.

[0045] Furthermore, the piston assembly 300 and the first cylinder 100 can move relative to each other along the axial direction of the first cylinder 100, which means that the piston assembly 300 can move along the axial direction of the first cylinder 100 relative to the first cylinder 100, or the first cylinder 100 can move along the axial direction of the first cylinder 100 relative to the piston assembly 300.

[0046] In addition, it should be noted that the shock absorber 1 may also be provided with a dust cover 800, which is sleeved on the outside of the first cylinder 100. The lower end of the dust cover 800 can be connected to the second cylinder 200, and the upper end of the dust cover 800 can be connected to the outer peripheral surface of the first cylinder 100. In this way, the dust cover 800 can be used to seal the space between the second cylinder 200 and the first cylinder 100 to keep the interior of the second cylinder 200 clean and tidy. In addition, the dust cover 800 can be a retractable bellows. In this way, when the first cylinder 100 and the second cylinder 200 move relative to each other, the dust cover 800 can be adaptively retracted to better seal the shock absorber 1 with the dust cover 800, and the dust cover 800 will not affect the relative movement between the first cylinder 100 and the second cylinder 200, making the structural arrangement more reasonable.

[0047] Specifically, the first cylinder 100 can be connected to the vehicle body or frame, and the second cylinder 200 can be connected to the wheel. When the vehicle is traveling on an uneven road, the vehicle body and the wheel move relative to each other. At this time, the first cylinder 100 and the second cylinder 200 can move relative to each other along the axial direction of the shock absorber 1, that is, the piston assembly 300 can move up and down in the first cylinder 100, and the shock absorber 1 can switch between the compression condition and the recovery condition, and then the volume ratio of the compression chamber 110 and the recovery chamber 120 can be changed to repeatedly flow the fluid in the shock absorber 1 from one of the compression chamber 110 and the recovery chamber 120 into the other, and convert the vibration energy into heat energy of the fluid and gas and dissipate it into the atmosphere.

[0048] Specifically, if Figure 2 and Figure 4As shown, the piston assembly 300 may include a piston rod 310 , a piston valve 320 , and a guide assembly 330 .

[0049] One end of the piston rod 310 is connected to the bottom cover 600, and the other end of the piston rod 310 extends into the first cylinder 100. The piston valve 320 is provided at the other end of the piston rod 310, and the piston valve 320 separates the compression chamber 110 and the recovery chamber 120 in the first cylinder 100. The compression chamber 110 and the recovery chamber 120 can be selectively connected through the piston valve 320. The guide assembly 330 is sleeved on the piston rod 310 and provided in the first cylinder 100. The guide assembly 330 is adjacent to the end of the first cylinder 100 facing the bottom cover 600, and the guide assembly 330, the second cylinder 200 and the first cylinder 100 jointly define the balance air chamber 210.

[0050] In this way, the piston valve 320 can separate the space within the first cylinder 100 into two chambers, namely the compression chamber 110 and the recovery chamber 120. When the shock absorber 1 is in the compression working condition, the piston valve 320 can control the fluid in the compression chamber 110 to flow to the recovery chamber 120, and when the shock absorber 1 is in the recovery working condition, the piston valve 320 can control the fluid in the recovery chamber 120 to flow to the compression chamber 120. In addition, by providing the guide assembly 330, not only can the guide assembly 330 be used to separate the recovery chamber 120 from the balance air chamber 210, but the relative movement of the piston assembly 300 and the first cylinder 100 can also be guided, thereby preventing the piston rod 310 from shaking along the radial direction of the first cylinder 100, and making the shock absorber 1 operate more stably.

[0051] According to the shock absorber 1 of the embodiment of the present invention, a buffer member 400 is arranged between the bottom of the first cylinder 100 and the bottom cover 600 of the second cylinder 200 along the axial direction of the shock absorber 1. In this way, when the shock absorber 1 is in a compression condition, that is, when the first cylinder 100 moves along the axial direction of the second cylinder 200 toward the bottom cover 600, the two sides of the buffer member 400 can respectively stop against the bottom of the first cylinder 100 and the bottom cover 600, thereby avoiding direct collision between the first cylinder 100 and the bottom cover 600, and avoiding damage to the bottom cover 600, so as to ensure that the shock absorber 1 can operate normally and help to extend the service life of the shock absorber 1.

[0052] In addition, by arranging the channel member 500 between the buffer member 400 and the bottom cover 600, and the channel member 500 is constructed with a balancing air duct 510, the structural strength of the channel member 500 can be higher. By arranging the balancing air duct 510 on the channel member 500, even if the first cylinder 100 moves toward the direction close to the bottom cover 600 and squeezes the channel member 500 through the buffer member 400, the channel member 500 is not easily deformed, that is, the balancing air duct 510 is not easily squeezed and deformed, so that the second cylinder 200 can stably perform intake and exhaust through the balancing air duct 510, and the reliability is higher.

[0053] In addition, the bottom cover 600 is configured with a vent hole 610 , a flow channel 410 is formed between the buffer 400 and the piston assembly 300 and / or the second cylinder 200 , and the balancing air channel 510 is communicated with the vent hole 610 and the flow channel 410 respectively.

[0054] For example, the outer circumferential surface of the buffer 400 can be connected to the bottom cover 600, and a circulation channel 410 can be formed between the inner circumferential surface of the buffer 400 and the piston rod 310; or, the inner circumferential surface of the buffer 400 can be connected to the piston rod 310, and a circulation channel 410 can be formed between the outer circumferential surface of the buffer 400 and the inner wall of the second cylinder 200; or, the buffer 400 and the piston rod 310 and the second cylinder 200 are all spaced apart, and a circulation channel 410 is formed between the inner circumferential surface of the buffer 400 and the piston rod 310, and a circulation channel 410 can be formed between the outer circumferential surface of the buffer 400 and the inner wall of the second cylinder 200.

[0055] Thus, the circulation channel 410 can be connected to the vent 610 through the balancing air channel 510, or in other words, a balancing air chamber 210 is constructed in the second cylinder 200, and the balancing air chamber 210 can be connected to the vent 610 through the balancing air channel 510, thereby realizing the connection between the interior of the second cylinder 200 and the exterior of the second cylinder 200, so as to realize the air intake and exhaust of the balancing air chamber 210, ensure the air pressure balance of the balancing air chamber 210, and facilitate the relative movement of the first cylinder 100 and the second cylinder 200.

[0056] In summary, adding a channel member 500 between the buffer member 400 and the bottom cover 600 can not only maintain the connection between the balancing air chamber 210 and the vent hole 610, so that the inside of the second cylinder 200 is connected with the outside of the second cylinder 200, but also the reliability of the balancing air channel 510 constructed by the channel member 500 is higher, the channel member 500 is not easily damaged by squeezing, and thus the integrity of the channel member 500 can be guaranteed, and the air flow inside and outside the balancing air chamber 210 is smoother, so that the shock absorber 1 can operate more stably.

[0057] In this way, the shock absorber 1 according to the embodiment of the present invention constructs a balancing air channel 510 by setting a channel member 500. The channel member 500 is not easily squeezed, deformed or damaged, and has higher reliability, thereby ensuring the integrity of the balancing air channel 510. The shock absorber 1 can stably balance the air pressure under compression or recovery conditions.

[0058] In some specific embodiments of the present invention, Figure 2-Figure 5 As shown, the channel member 500 includes a ventilation gasket 520 and a support gasket 530 .

[0059] The ventilation gasket 520 is sleeved on the piston assembly 300 and is located between the buffer 400 and the bottom cover 600. The ventilation gasket 520 is constructed with a balancing hole 521, and a first sub-channel 524 is formed between the ventilation gasket 520 and the piston assembly 300 and / or the second cylinder 200. The support gasket 530 is sleeved on the piston assembly 300 and is located between the buffer 400 and the ventilation gasket 520. A second sub-channel 531 is formed between the support gasket 530 and the piston assembly 300 and / or the second cylinder 200. The first sub-channel 524 is respectively connected to the balancing hole 521 and the second sub-channel 531, and the balancing hole 521, the first sub-channel 524 and the second sub-channel 531 jointly define the balancing airway 510.

[0060] The ventilation gasket 520 may be made of metal, plastic or nylon, and the support gasket 530 may also be made of metal, plastic or nylon.

[0061] Among them, a first sub-channel 524 is formed between the ventilation gasket 520 and the piston assembly 300 and / or the second cylinder 200, which means that the inner circumference of the ventilation gasket 520 can be spaced apart from the piston assembly 300 and form the first sub-channel 524; or, the outer circumference of the ventilation gasket 520 can be spaced apart from the inner wall of the second cylinder 200 and form the first sub-channel 524; or, the inner circumference of the ventilation gasket 520 is spaced apart from the piston assembly 300 and forms the first sub-channel 524, and the outer circumference of the ventilation gasket 520 is spaced apart from the inner wall of the second cylinder 200 and forms the first sub-channel 524.

[0062] In addition, a second sub-channel 531 is formed between the support gasket 530 and the piston assembly 300 and / or the second cylinder 200, which means that the inner circumferential surface of the support gasket 530 can be spaced apart from the piston assembly 300 to form the second sub-channel 531; or, the outer circumferential surface of the support gasket 530 can be spaced apart from the inner wall of the second cylinder 200 to form the second sub-channel 531; or, the inner circumferential surface of the support gasket 530 is spaced apart from the piston assembly 300 to form the second sub-channel 531, and the outer circumferential surface of the support gasket 530 is spaced apart from the inner wall of the second cylinder 200 to form the second sub-channel 531.

[0063] Therefore, when the first cylinder 100 moves toward the bottom cover 600 of the second cylinder 200, the volume of the balancing air chamber 210 becomes smaller, and the gas in the balancing air chamber 210 can flow outward through the second sub-channel 531, the first sub-channel 524, the balancing hole 521 and the air vent 610 in sequence. When the first cylinder 100 moves toward the bottom cover 600 away from the second cylinder 200, the volume of the balancing air chamber 210 becomes larger, and the air outside the shock absorber 1 can flow into the balancing air chamber 210 through the air vent 610, the balancing hole 521, the first sub-channel 524 and the second sub-channel 531 in sequence, thereby ensuring the balance of the internal and external air pressures of the second cylinder 200.

[0064] In addition, by dividing the channel member 500 into a ventilation gasket 520 and a support gasket 530, the structure of the ventilation gasket 520 and the support gasket 530 can be simplified, which is convenient for processing, and the support gasket 530 is supported between the buffer member 400 and the ventilation gasket 520. In this way, the support gasket 530 can be used to protect the buffer member 400 to prevent the edge contour of the balance hole 521 on the ventilation gasket 520 from cutting the buffer member 400.

[0065] In some specific embodiments of the present invention, Figure 3 and Figure 5 As shown, the shock absorber 1 may further include a filter 700 , such as a filter mesh.

[0066] The filter element 700 can be arranged in the air vent 610 and connected to the bottom cover 600. In this way, when the outside air flows into the second cylinder 200 through the air vent 610, the filter element 700 can filter the dust and impurities in the air to prevent the dust and impurities from entering the second cylinder 200, so as to ensure that the interior of the second cylinder 200 is clean and tidy, and the shock absorber 1 can operate stably.

[0067] In some specific embodiments of the present invention, Figure 5 and Figure 6 As shown, the balancing hole 521 includes a connecting section 522 and a transition section 523 .

[0068] The connecting section 522 is connected to the vent hole 610, and the transition section 523 extends radially along the ventilation gasket 520. The transition section 523 is connected to the connecting section 522 and the first sub-channel 524. This arrangement allows the balancing hole 521 to communicate with the first sub-channel 524 and the vent hole 610, even if the first sub-channel 524 and the vent hole 610 are staggered in the radial direction of the second cylinder 200, thereby achieving communication between the balancing air chamber 210 and the outside, and the structural arrangement is more reasonable.

[0069] Further, if Figure 6As shown, the width of the transition section 523 gradually increases as it approaches the first sub-channel 524 along the radial direction of the ventilation gasket 520 .

[0070] That is to say, along the radial direction of the ventilation gasket 520, the aperture of the transition section 523 gradually becomes larger as it approaches the first sub-channel 524. This can increase the airflow rate flowing through the transition section 523, and make the transition between the transition section 523 and the first sub-channel 524 smoother. The airflow between the transition section 523 and the first sub-channel 524 can be smoother, which is beneficial to improving the smoothness of the airflow in the balance airway 510, so that the intake and exhaust of the second cylinder 200 can be smoother.

[0071] In some specific embodiments of the present invention, Figure 5 As shown, there are multiple balancing holes 521 and they are arranged at intervals along the circumference of the ventilation gasket 520, the first sub-channel 524 is respectively connected to the multiple balancing holes 521, and there are multiple ventilation holes 610, and the multiple ventilation holes 610 correspond one-to-one to the multiple balancing holes 521.

[0072] There may be multiple filter elements 700 , and the multiple filter elements 700 are disposed in the multiple vent holes 610 in a one-to-one correspondence.

[0073] With this arrangement, the air inside and outside the second cylinder 200 can flow through multiple balancing holes 521 and multiple ventilation holes 610 at the same time, which is beneficial to improving the air flow rate of the intake and exhaust of the second cylinder 200, and the intake and exhaust efficiency is higher, and thus the internal and external air pressure balance of the balancing air chamber 210 can be quickly achieved to facilitate the relative movement of the first cylinder 100 and the second cylinder 200.

[0074] In some specific embodiments of the present invention, Figure 3 As shown, the support gasket 530 is connected to the buffer 400, and the ventilation gasket 520 is connected to the bottom cover 600. In other words, the support gasket 530 can be integrated with the buffer 400, and the ventilation gasket 520 can be integrated with the bottom cover 600. For example, the support gasket 530 can be fixed to the buffer 400 by vulcanization bonding, and the ventilation gasket 520 can be connected to the bottom cover 600 by interference fit, or the ventilation gasket 520 and the bottom cover 600 can be connected by welding or clamping.

[0075] In other specific embodiments of the present invention, the support gasket 530 and the ventilation gasket 520 are both connected to the buffer component 400, that is, the support gasket 530 and the ventilation gasket 520 are integrated into the buffer component 400. For example, the support gasket 530 and the ventilation gasket 520 can be connected into one piece by welding or clamping, and then the channel member 500 is fixedly connected to the buffer component 400 by vulcanization bonding.

[0076] In other specific embodiments of the present invention, the support gasket 530 and the ventilation gasket 520 are both connected to the bottom cover 600, that is, the support gasket 530 and the ventilation gasket 520 are integrated into the bottom cover 600. For example, the support gasket 530 and the ventilation gasket 520 can be connected to each other by welding or clamping, and then the channel member 500 is connected to the bottom cover 600 by welding or clamping.

[0077] In some specific embodiments of the present invention, Figure 2 and Figure 3 As shown, the buffer member 400 is connected to the bottom cover 600 , and the inner circumference of the buffer member 400 is spaced apart from the piston assembly 300 to define a flow channel 410 .

[0078] For example, the outer peripheral surface of the buffer component 400 can be interference fit with the bottom cover 600, and a circulation channel 410 can be formed between the buffer component 400 and the piston rod 310. At the same time, the channel component 500 can also be spaced apart from the piston rod 310 to form an air channel, so that the circulation channel 410 and the balance air channel 510 can be connected, thereby realizing the intake and exhaust of the second cylinder 200, and the buffer component 400 can be fixed to the bottom cover 600 to prevent the buffer component 400 from shaking along the axial direction of the second cylinder 200, and the fixation is more stable.

[0079] In other specific embodiments of the present invention, the buffer member 400 is connected to the side of the first cylinder 100 facing the bottom cover 600, and the outer peripheral surface of the buffer member 400 is spaced apart from the second cylinder 200 to define a flow channel 410. For example, the outer peripheral surface of the buffer member 400 can be spaced apart from the flange of the bottom cover 600 to define a flow channel 410.

[0080] In this way, the buffer component 400 can be fixed to the first cylinder 100 to prevent the buffer component 400 from shaking along the axial direction of the second cylinder 200, and the fixation is more stable. Moreover, when the buffer component 400 and the channel component 500 are stopped, the flow channel 410 defined between the outer peripheral surface of the buffer component 400 and the second cylinder 200 can be connected to the balancing air channel 510, thereby realizing the connection between the balancing air chamber 210 and the outside.

[0081] In other specific embodiments of the present invention, the inner circumference of the buffer member 400 is spaced apart from the piston assembly 300 to define a flow channel 410, and the outer circumference of the buffer member 400 is spaced apart from the second cylinder 200 to define a flow channel 410. In this arrangement, the flow channel 410 can be formed on both the radial inner and outer sides of the buffer member 400, thereby ensuring that the balancing air channel 510 can communicate with the balancing air chamber 210 through the flow channel 410, and facilitating the increase of the air flow rate of the flow channel 410, so as to facilitate the intake and exhaust of the second cylinder 200 and achieve air pressure balance in the balancing air chamber 210.

[0082] In other specific embodiments of the present invention, the channel member 500 is constructed as a plurality of protrusions (not shown in the figure), and the protrusions are arranged on the side of the bottom cover 600 facing the buffer member 400. The protrusions avoid the vent holes 610, and a balance air channel 510 is defined between the plurality of protrusions.

[0083] That is to say, a plurality of protrusions can be constructed on the side of the bottom cover 600 facing the buffer member 400, and the plurality of protrusions can be distributed at intervals along the circumference and / or radial direction of the bottom cover 600, and the plurality of protrusions and the buffer member 400 stop and define the balancing air channel 510 to facilitate communication between the balancing air chamber 210 and the vent hole 610.

[0084] It is understood that the bottom cover 600 has a relatively high structural strength. By constructing a protrusion on the bottom cover 600 and using it as the channel member 500, the structure of the channel member 500 can be simplified. Furthermore, the structural strength of the protrusion on the bottom cover 600 is relatively high. Even if the buffer member 400 presses against the protrusion on the bottom cover 600, the protrusion will not deform, thereby less likely to cause blockage of the balancing air passage 510. Furthermore, by constructing both the protrusion and the vent 610 on the bottom cover 600, the protrusion avoids the vent 610. That is, the protrusion is not provided at the location of the vent 610. This prevents the protrusion from blocking the vent 610, thereby ensuring smooth airflow within the vent 610.

[0085] The following describes a vehicle according to an embodiment of the present invention with reference to the accompanying drawings. The vehicle includes a shock absorber 1 according to the above embodiment of the present invention.

[0086] According to the vehicle of the embodiment of the present invention, by utilizing the shock absorber 1 of the above-mentioned embodiment of the present invention, the shock absorber 1 constructs a balancing air channel 510 by setting a channel member 500. The channel member 500 is not easily squeezed, deformed or damaged, and has higher reliability, thereby ensuring the integrity of the balancing air channel 510. The shock absorber 1 can stably balance the air pressure during compression or recovery conditions.

[0087] Other structures and operations of the shock absorber 1 and the vehicle according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0088] In this specification, reference to terms such as "specific embodiment" and "specific example" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0089] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A shock absorber (1), characterized in that: include: A first cylinder (100) and a second cylinder (200), wherein the second cylinder (200) is sleeved outside the first cylinder (100), and the first cylinder (100) and the second cylinder (200) are relatively movable along the axial direction of the first cylinder (100); a piston assembly (300), one end of the piston assembly (300) being connected to the bottom cover (600) of the second cylinder (200), and the other end of the piston assembly (300) extending into the first cylinder (100), the piston assembly (300) and the first cylinder (100) being relatively movable along the axial direction of the first cylinder (100), and the piston assembly (300) separating a compression chamber (110) and a recovery chamber (120) within the first cylinder (100); a buffer member (400), the buffer member (400) being sleeved on the piston assembly (300) and located between the first cylinder (100) and the bottom cover (600); a channel member (500), the channel member (500) being provided between the buffer member (400) and the bottom cover (600), and the channel member (500) being configured with a balancing air channel (510); The bottom cover (600) is provided with a vent hole (610), a circulation channel (410) is formed between the buffer member (400) and the piston assembly (300) and / or the second cylinder (200), and the balancing air channel (510) is communicated with the vent hole (610) and the circulation channel (410), respectively.

2. The vibration absorber (1) according to claim 1, characterized in that The channel member (500) comprises: a ventilation gasket (520), the ventilation gasket (520) being sleeved on the piston assembly (300) and located between the buffer member (400) and the bottom cover (600), the ventilation gasket (520) being configured with a balancing hole (521), and forming a first sub-channel (524) between the ventilation gasket (520) and the piston assembly (300) and / or the second cylinder (200); A support gasket (530) is provided on the piston assembly (300) and is located between the buffer member (400) and the ventilation gasket (520). A second sub-channel (531) is formed between the support gasket (530) and the piston assembly (300) and / or the second cylinder (200). The first sub-channel (524) is respectively connected to the balancing hole (521) and the second sub-channel (531). The balancing hole (521), the first sub-channel (524) and the second sub-channel (531) jointly define the balancing airway (510).

3. The vibration absorber (1) according to claim 2, characterized in that The balancing hole (521) includes: a communication section (522), the communication section (522) being in communication with the vent hole (610); A transition section (523), the transition section (523) extending in the radial direction of the ventilation gasket (520), and the transition section (523) being in communication with the communication section (522) and the first sub-channel (524) respectively.

4. The vibration absorber (1) according to claim 3, characterized in that Along the radial direction of the ventilation gasket (520) and approaching the first sub-channel (524), the width of the transition section (523) gradually increases.

5. The vibration absorber (1) according to claim 2, characterized in that There are a plurality of balancing holes (521) arranged at intervals along the circumference of the ventilation gasket (520), and the first sub-channel (524) is respectively connected to the plurality of balancing holes (521); and There are a plurality of vent holes (610), and the plurality of vent holes (610) correspond one-to-one to the plurality of balancing holes (521).

6. The vibration absorber (1) according to claim 2, characterized in that The supporting gasket (530) is connected to the buffer member (400), and the ventilation gasket (520) is connected to the bottom cover (600); or, The supporting gasket (530) and the ventilation gasket (520) are both connected to the buffer member (400); or, The supporting gasket (530) and the ventilation gasket (520) are both connected to the bottom cover (600).

7. The vibration absorber (1) according to claim 1, characterized in that The buffer member (400) is connected to the bottom cover (600), and the inner circumferential surface of the buffer member (400) and the piston assembly (300) are spaced apart to define the circulation channel (410); or, The buffer member (400) is connected to a side of the first cylinder (100) facing the bottom cover (600), and the outer peripheral surface of the buffer member (400) and the second cylinder (200) are spaced apart to define the circulation channel (410); or, The inner circumferential surface of the buffer member (400) and the piston assembly (300) are spaced apart to define the circulation channel (410), and the outer circumferential surface of the buffer member (400) and the second cylinder (200) are spaced apart to define the circulation channel (410).

8. The vibration absorber (1) according to claim 1, characterized in that The channel member (500) is constructed as a plurality of protrusions and is provided on a side of the bottom cover (600) facing the buffer member (400), the protrusions avoiding the vent holes (610), and the balancing air channel (510) is defined between the plurality of protrusions.

9. The vibration absorber (1) according to claim 1, characterized in that The piston assembly (300) comprises: a piston rod (310), one end of the piston rod (310) being connected to the bottom cover (600), and the other end of the piston rod (310) extending into the first cylinder (100); a piston valve (320), the piston valve (320) being provided at the other end of the piston rod (310), and the piston valve (320) separating the compression chamber (110) and the recovery chamber (120) in the first cylinder (100), the compression chamber (110) and the recovery chamber (120) being selectively connected via the piston valve (320); A guide assembly (330), wherein the guide assembly (330) is sleeved on the piston rod (310) and disposed in the first cylinder (100), the guide assembly (330) is adjacent to an end of the first cylinder (100) facing the bottom cover (600), and the guide assembly (330), the second cylinder (200) and the first cylinder (100) jointly define a balance air chamber (210).

10. A vehicle, characterized in that: Comprising a vibration absorber (1) according to any one of claims 1 to 9.

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