Shock absorber and vehicle

Abstract

The utility model discloses a shock absorber and a vehicle, the shock absorber 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 other end of the piston assembly extends into the first barrel, the piston assembly and the first barrel can move relatively in the axial direction of the first barrel, and the piston assembly divides the interior of the first barrel into a compression cavity and a recovery cavity; and the buffer piece is connected to one end, facing the bottom cover, of the first barrel and is located between the first barrel and the bottom cover. According to the shock absorber disclosed by the embodiment of the utility model, the buffer piece is connected with the first barrel body, so that the buffer piece can buffer collision between the first barrel body and the bottom cover, and can reduce abrasion of dust and impurities accumulated at the bottom cover to the buffer piece, thereby being beneficial to prolonging the service life of the buffer piece; and the buffer piece can more reliably buffer the collision of the first barrel body and the bottom cover.

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 being damaged by collision. However, since it is impossible to filter out smaller particles of dust and impurities from entering the second cylinder, fine dust and impurities usually accumulate at the bottom of the second cylinder. Moreover, since the strength of the buffer is relatively low, the buffer is fixed to the bottom of the second cylinder. The dust and impurities accumulated at the bottom of the second cylinder will continuously wear the buffer, thereby causing damage to the buffer and reducing the service life of the buffer. Utility Model Content

[0004] 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 connects a buffering member to a first cylinder. The buffering member not only cushions the collision between the first cylinder and the bottom cover, but also reduces the wear of the buffering member caused by dust and impurities accumulated on the bottom cover, thereby extending the service life of the buffering member and providing a more reliable buffering effect on the collision between the first cylinder and the bottom cover.

[0005] An embodiment of the present utility model further provides a vehicle having the above-mentioned shock absorber.

[0006] In order to achieve the above-mentioned purpose, according to the first aspect embodiment of the present utility model, a shock absorber is proposed, including: a first cylinder and a second cylinder, 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; a piston assembly, one end of the piston assembly is connected to the bottom cover of the second cylinder, and the other end of the piston assembly extends into the first cylinder, the piston assembly and the first cylinder can move relative to each other along the axial direction of the first cylinder, and the piston assembly separates a compression chamber and a recovery chamber in the first cylinder; a buffer component, the buffer component is connected to one end of the first cylinder facing the bottom cover and is located between the first cylinder and the bottom cover.

[0007] Therefore, the shock absorber according to the embodiment of the present invention connects the buffer component to the first cylinder, so that the buffer component can not only buffer the collision between the first cylinder and the bottom cover, but also reduce the wear of the buffer component caused by dust and impurities accumulated in the bottom cover, which is beneficial to extending the service life of the buffer component. The buffer component is more reliable in buffering the collision between the first cylinder and the bottom cover.

[0008] According to some embodiments of the present invention, the shock absorber further includes: a connecting seat, the connecting seat is connected to one end of the first cylinder facing the bottom cover, and the buffer member is connected to a side of the connecting seat facing the bottom cover.

[0009] According to some embodiments of the present invention, the connecting seat includes: a first connecting portion, which extends along the circumference of the first cylinder, and is sleeved outside the first cylinder and connected to the first cylinder; a second connecting portion, which is connected to the first connecting portion and is arranged on the side of the first connecting portion facing the bottom cover, the second connecting portion protrudes from an end of the first cylinder facing the bottom cover, and the buffer member is connected to the second connecting portion.

[0010] According to some embodiments of the present invention, the connecting seat further includes: a stop portion, the stop portion is connected to the first connecting portion and / or the second connecting portion, and the stop portion is located between the first cylinder and the buffer component.

[0011] According to some embodiments of the present invention, the inner circumferential surface of the first connecting portion is configured with an internal thread, and the outer circumferential surface of the first cylinder is configured with an external thread, and the first connecting portion is threadedly connected to the first cylinder; and / or, the second connecting portion extends along the circumference of the first cylinder, and the buffer member extends into the second connecting portion and has an interference fit with the second connecting portion.

[0012] According to some embodiments of the present invention, a third connecting portion is configured at one end of the first cylinder facing the bottom cover, and the buffer member extends into the third connecting portion and is interference-fitted with the third connecting portion.

[0013] According to some embodiments of the present invention, the shock absorber further includes: a channel member, wherein the channel member is arranged between the buffer member and the bottom cover, the channel member is configured with a balancing air channel, and the bottom cover is configured with a vent hole, and the internal space of the second cylinder is connected to the outside of the second cylinder through the balancing air channel and the vent hole.

[0014] According to some embodiments of the present invention, the channel member includes: a ventilation gasket, which is arranged on the side of the bottom cover facing the first cylinder, 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 arranged on the side of the ventilation gasket facing the first cylinder, 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 duct.

[0015] 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.

[0016] According to a second embodiment of the present invention, a vehicle is provided, comprising the shock absorber according to the first embodiment of the present invention.

[0017] According to the vehicle of the second aspect embodiment of the present invention, by utilizing the shock absorber described in the first aspect embodiment of the present invention, the shock absorber connects the buffer component to the first cylinder, so that the buffer component can not only buffer the collision between the first cylinder and the bottom cover, but also reduce the wear of the buffer component caused by dust and impurities accumulated in the bottom cover, which is beneficial to extending the service life of the buffer component. The buffer component is more reliable in buffering the collision between the first cylinder and the bottom cover.

[0018] 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

[0019] 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:

[0020] Figure 1 1 is a schematic structural diagram of a shock absorber according to an embodiment of the present utility model;

[0021] Figure 2is a cross-sectional view of a shock absorber according to an embodiment of the present utility model;

[0022] Figure 3 yes Figure 2 An enlarged schematic diagram of the structure at A;

[0023] Figure 4 yes Figure 2 An enlarged schematic diagram of the structure at B;

[0024] Figure 5 is a cross-sectional view of a shock absorber according to another embodiment of the utility model;

[0025] Figure 6 yes Figure 5 An enlarged schematic diagram of the structure at C;

[0026] Figure 7 is an exploded view of a shock absorber according to an embodiment of the present utility model;

[0027] Figure 8 It is a structural schematic diagram of a connecting socket according to an embodiment of the utility model.

[0028] Figure 9 It is a structural schematic diagram of the connecting socket from another perspective according to an embodiment of the utility model.

[0029] Reference numerals:

[0030] 1. Shock absorber;

[0031] 100, first cylinder; 110, compression chamber; 120, recovery chamber; 130, third connecting portion;

[0032] 200, second cylinder; 210, balance air chamber;

[0033] 300, piston assembly; 310, piston rod; 320, piston valve; 330, guide assembly;

[0034] 400, buffer parts;

[0035] 500, connecting seat; 510, first connecting portion; 520, second connecting portion; 530, stopping portion;

[0036] 600, channel member; 610, balancing air channel; 620, ventilation gasket; 621, balancing hole; 622, first sub-channel; 630, supporting gasket; 631, second sub-channel;

[0037] 700, bottom cover; 710, vent; 800, filter element; 900, dust cover. DETAILED DESCRIPTION

[0038] 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.

[0039] 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.

[0040] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0041] In the description of the present invention, “multiple” means two or more, and “several” means one or more.

[0042] The shock absorber 1 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0043] like Figures 1-9 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 and a buffer member 400 .

[0044] 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 700 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, and the piston assembly 300 separates the compression chamber 110 and the recovery chamber 120 in the first cylinder 100. The buffer member 400 is connected to one end of the first cylinder 100 facing the bottom cover 700 and is located between the first cylinder 100 and the bottom cover 700.

[0045] 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.

[0046] 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.

[0047] In addition, it should be noted that the shock absorber 1 may also be provided with a dust cover 900, which is sleeved on the outside of the first cylinder 100. The lower end of the dust cover 900 can be connected to the second cylinder 200, and the upper end of the dust cover 900 can be connected to the outer peripheral surface of the first cylinder 100. In this way, the dust cover 900 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. In addition, the dust cover 900 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 900 can be adaptively retracted to better seal the shock absorber 1. The dust cover 900 will not affect the relative movement between the first cylinder 100 and the second cylinder 200, making the structural arrangement more reasonable.

[0048] Among them, 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.

[0049] 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 700 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 700, the two sides of the buffer member 400 can respectively stop against the bottom of the first cylinder 100 and the bottom cover 700, thereby avoiding direct collision between the first cylinder 100 and the bottom cover 700, and avoiding damage to the bottom cover 700, so as to ensure that the shock absorber 1 can operate normally and help to extend the service life of the shock absorber 1.

[0050] In addition, the buffer 400 is connected to one end of the first cylinder 100 facing the bottom cover 700. In this way, when the shock absorber 1 is in the recovery condition, that is, the first cylinder 100 and the second cylinder 200 are away from each other, the first cylinder 100 can drive the buffer 400 to move in the direction away from the bottom cover 700 to separate the buffer 400 from the bottom cover 700. At this time, the dust and impurities accumulated at the bottom cover 700 are not easy to contact the buffer 400, thereby reducing the wear of the dust and impurities on the buffer 400. Moreover, only when the first cylinder 100 and the second cylinder 200 are close to each other to the extreme position, the buffer 400 will stop at the bottom cover 700. That is to say, in most cases, the buffer 400 can be spaced apart from the bottom cover 700, thereby greatly reducing the chance of the buffer 400 being worn by dust and impurities, and the service life of the buffer 400 can be longer.

[0051] Furthermore, by relatively fixing the buffer member 400 and the first cylinder 100 , the buffer member 400 is less likely to shake, thereby enabling the buffer member 400 to more stably and reliably buffer the collision between the first cylinder 100 and the second cylinder 200 .

[0052] In this way, the shock absorber 1 according to the embodiment of the present invention connects the buffer 400 to the first cylinder 100, so that the buffer 400 can not only buffer the collision between the first cylinder 100 and the bottom cover 700, but also set the buffer 400 and the bottom cover 700 at a distance to reduce the wear of the buffer 400 caused by dust and impurities accumulated in the bottom cover 700, which is beneficial to extending the service life of the buffer 400, and the buffer 400 is more reliable in buffering the collision between the first cylinder 100 and the bottom cover 700.

[0053] In some specific embodiments of the present invention, Figure 2 and Figure 3 As shown, the shock absorber 1 further includes a connecting seat 500 , which is connected to one end of the first cylinder 100 facing the bottom cover 700 , and the buffer member 400 is connected to one side of the connecting seat 500 facing the bottom cover 700 .

[0054] By setting a connecting seat 500 to be connected to the first cylinder 100, and fixing the buffer component 400 through the connecting seat 500, there is no need to process a structure for fixing the buffer component 400 on the first cylinder 100, which is beneficial to simplifying the structure of the first cylinder 100 and facilitating the processing and manufacturing of the first cylinder 100. Moreover, the buffer component 400 is connected to the first cylinder 100 through the connecting seat 500, which can improve the connection stability of the buffer component 400 and the first cylinder 100 and facilitate assembly.

[0055] In some specific embodiments of the present invention, Figure 2 、 Figure 8 and Figure 9 As shown, the connection base 500 includes a first connection portion 510 and a second connection portion 520 .

[0056] The first connecting portion 510 extends along the circumference of the first cylinder 100, and the first connecting portion 510 is sleeved outside the first cylinder 100 and connected to the first cylinder 100. The second connecting portion 520 is connected to the first connecting portion 510 and is arranged on the side of the first connecting portion 510 facing the bottom cover 700. The second connecting portion 520 protrudes from the end of the first cylinder 100 facing the bottom cover 700, and the buffer part 400 is connected to the second connecting portion 520.

[0057] For example, the inner circumference of the first connecting portion 510 may be interference-fitted with the outer circumference of the first barrel 100 , or may be threadedly connected. The inner circumference of the second connecting portion 520 may be interference-fitted with the outer circumference of the buffer 400 .

[0058] By providing the first connecting portion 510 and the second connecting portion 520, after the connecting base 500 is connected to the first cylindrical body 100 via the first connecting portion 510, the second connecting portion 520 can extend beyond the first cylindrical body 100 in a direction closer to the bottom cover 700, thereby facilitating the securing of the buffer member 400 via the second connecting portion 520. Furthermore, this arrangement allows the connecting base 500 to be radially limited relative to the first cylindrical body 100 and the buffer member 400, respectively, preventing the buffer member 400 from radially shaking. This further improves the securing stability of the buffer member 400, and provides a better impact-absorbing effect of the buffer member 400.

[0059] Furthermore, if Figure 3 、 Figure 8 and Figure 9 As shown, the connecting seat 500 further includes a stopper 530 , which is connected to the first connecting portion 510 and / or the second connecting portion 520 , and is located between the first cylinder 100 and the buffer member 400 .

[0060] For example, the stopper portion 530 may be welded to the first connection portion 510 and / or the second connection portion 520 , which may improve the overall structural strength of the connection base 500 and make the connection more stable and reliable.

[0061] Among them, the stop portion 530 is connected to the first connection portion 510 and / or the second connection portion 520, which means that the stop portion 530 can be connected to the first connection portion 510; or, the stop portion 530 can be connected to the second connection portion 520; or, the first stop portion 530 can be connected to the first connection portion 510 and the second connection portion 520 respectively.

[0062] By setting the stop portion 530, the stop portion 530 can pre-position the connecting seat 500 and the first cylinder 100 for installation. Specifically, when the connecting seat 500 and the first cylinder 100 are assembled, the connecting seat 500 and the first cylinder 100 are close to each other along the axial direction of the first cylinder 100. When installed in place, the stop portion 530 and the first cylinder 100 abut against each other, which means that the connecting seat 500 has been assembled with the first cylinder 100, which is beneficial to improving the assembly efficiency of the connecting seat 500 and the first cylinder 100. Moreover, by abutting against the stop portion 530 and the first cylinder 100, the connecting seat 500 and the first cylinder 100 can be prevented from relative movement along the axial direction of the first cylinder 100, and the connection between the connecting seat 500 and the first cylinder 100 is more stable and reliable.

[0063] Similarly, the stop portion 530 can also pre-position the connecting seat 500 and the buffer component 400 for installation. Specifically, when the connecting seat 500 and the buffer component 400 are assembled, the connecting seat 500 and the buffer component 400 are close to each other. When installed in place, the stop portion 530 and the buffer component 400 abut each other, which means that the connecting seat 500 has been assembled with the buffer component 400, which is beneficial to improving the assembly efficiency of the connecting seat 500 and the buffer component 400. In addition, the stop portion 530 and the buffer component 400 abut each other, which can prevent the connecting seat 500 and the buffer component 400 from relative movement along the axial direction of the connecting seat 500, and the connection between the connecting seat 500 and the buffer component 400 is more stable and reliable.

[0064] In addition, by providing the stop portion 530, the stop portion 530 can be used as a guide pressure cover for the guide assembly 330 described below, that is, the stop portion 530 can stop the guide of the guide assembly 330 to prevent the guide assembly 330 from detaching from the first cylinder 100. This can simplify the structure of the guide assembly 330, thereby reducing the number of parts of the piston assembly 300 and improving assembly efficiency.

[0065] In some specific embodiments of the present invention, the inner circumference of the first connecting portion 510 is configured with an internal thread, and the outer circumference of the first cylindrical body 100 is configured with an external thread, and the first connecting portion 510 is threadedly connected to the first cylindrical body 100. In other words, the first connecting portion 510 and the first cylindrical body 100 can be connected by a threaded connection, which can improve the stability of the connection between the first connecting portion 510 and the first cylindrical body 100, and make the connection between the connecting base 500 and the first cylindrical body 100 more reliable.

[0066] In some specific embodiments of the present invention, Figure 7 and Figure 8 As shown, the second connecting portion 520 extends along the circumference of the first cylindrical body 100, and the buffer member 400 extends into the second connecting portion 520 and has an interference fit with the second connecting portion 520. This arrangement simplifies the connection structure between the buffer member 400 and the second connecting portion 520, and makes the assembly between the buffer member 400 and the connecting base 500 more convenient and quick. In addition, the inner circumferential wall of the second connecting portion 520 can radially stop the buffer member 400, thereby preventing the buffer member 400 from shaking along the radial direction of the connecting base 500, and the connection and fixation of the buffer member 400 is more stable and reliable.

[0067] In other specific embodiments of the present invention, Figure 5 and Figure 6 As shown, a third connecting portion 130 is configured at one end of the first cylinder 100 facing the bottom cover 700 , and the buffer member 400 extends into the third connecting portion 130 and is interference-fitted with the third connecting portion 130 .

[0068] In other words, the third connecting portion 130 can be directly constructed at one end of the first cylinder 100. The third connecting portion 130 can protrude from the guide assembly 330 described below in a direction closer to the bottom cover 700, so as to facilitate the connection between the buffer member 400 and the third connecting portion 130, thereby achieving the connection and fixation of the buffer member 400 to the first cylinder 100. Moreover, this arrangement eliminates the need for an additional connecting base 500, which helps reduce the number of parts of the shock absorber 1, making assembly more convenient and efficient.

[0069] In some specific embodiments of the present invention, Figure 4 and Figure 7 As shown, the shock absorber 1 also includes a channel member 600, which is arranged between the buffer member 400 and the bottom cover 700. The channel member 600 is constructed with a balancing air channel 610, and the bottom cover 700 is constructed with a vent hole 710. The internal space of the second cylinder 200 is connected to the outside of the second cylinder 200 through the balancing air channel 610 and the vent hole 710.

[0070] Among them, such as Figure 4As shown, the shock absorber 1 may further include a filter element 800, for example, a filter screen. The filter element 800 may be disposed in the vent hole 710 and connected to the bottom cover 700. In this way, when external air flows into the interior of the second cylinder 200 through the vent hole 710, the filter element 800 may filter dust and impurities in the air to prevent dust and impurities from entering the second cylinder 200, thereby ensuring that the interior of the second cylinder 200 is clean and tidy, and the shock absorber 1 may operate stably.

[0071] In addition, by arranging the channel member 600 between the buffer member 400 and the bottom cover 700, and the channel member 600 is constructed with a balancing air duct 610, the structural strength of the channel member 600 can be higher. By arranging the balancing air duct 610 on the channel member 600, even if the first cylinder 100 moves toward the direction close to the bottom cover 700 and squeezes the channel member 600 through the buffer member 400, the channel member 600 is not easily deformed, that is, the balancing air duct 610 is not easily squeezed and deformed, so that the second cylinder 200 can stably perform intake and exhaust through the balancing air duct 610, and the reliability is higher.

[0072] In addition, the bottom cover 700 is constructed with a vent hole 710, which connects the inside and outside of the second cylinder 200 through the balancing air duct 610 and the vent hole 710 to facilitate the air intake and exhaust of the second cylinder 200, ensure the air pressure balance of the lower end chamber of the second cylinder 200, and facilitate the relative movement of the first cylinder 100 and the second cylinder 200.

[0073] Furthermore, if Figure 2 、 Figure 4 and Figure 7 As shown, the channel member 600 includes a ventilation gasket 620 and a support gasket 630 .

[0074] The ventilation gasket 620 is arranged on the side of the bottom cover 700 facing the first cylinder 100, and the ventilation gasket 620 is constructed with a balancing hole 621, and a first sub-channel 622 is formed between the ventilation gasket 620 and the piston assembly 300 and / or the second cylinder 200. The support gasket 630 is arranged on the side of the ventilation gasket 620 facing the first cylinder 100, and a second sub-channel 631 is formed between the support gasket 630 and the piston assembly 300 and / or the second cylinder 200. The first sub-channel 622 is respectively connected to the balancing hole 621 and the second sub-channel 631, and the balancing hole 621, the first sub-channel 622 and the second sub-channel 631 jointly define the balancing airway 610.

[0075] The ventilation gasket 620 may be made of metal, plastic or nylon, and the support gasket 630 may also be made of metal, plastic or nylon.

[0076] Among them, a first sub-channel 622 is formed between the ventilation gasket 620 and the piston assembly 300 and / or the second cylinder 200, which means that the inner circumference of the ventilation gasket 620 can be spaced apart from the piston assembly 300 and form the first sub-channel 622; or, the outer circumference of the ventilation gasket 620 can be spaced apart from the inner wall of the second cylinder 200 and form the first sub-channel 622; or, the inner circumference of the ventilation gasket 620 is spaced apart from the piston assembly 300 and forms the first sub-channel 622, and the outer circumference of the ventilation gasket 620 is spaced apart from the inner wall of the second cylinder 200 and forms the first sub-channel 622.

[0077] In addition, a second sub-channel 631 is formed between the support gasket 630 and the piston assembly 300 and / or the second cylinder 200, which means that the inner circumferential surface of the support gasket 630 can be spaced apart from the piston assembly 300 to form the second sub-channel 631; or, the outer circumferential surface of the support gasket 630 can be spaced apart from the inner wall of the second cylinder 200 to form the second sub-channel 631; or, the inner circumferential surface of the support gasket 630 is spaced apart from the piston assembly 300 to form the second sub-channel 631, and the outer circumferential surface of the support gasket 630 is spaced apart from the inner wall of the second cylinder 200 to form the second sub-channel 631.

[0078] Therefore, when the first cylinder 100 moves toward the bottom cover 700 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 631, the first sub-channel 622, the balancing hole 621 and the air vent 710 in sequence. When the first cylinder 100 moves toward the bottom cover 700 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 710, the balancing hole 621, the first sub-channel 622 and the second sub-channel 631 in sequence, thereby ensuring the balance of the internal and external air pressures of the second cylinder 200.

[0079] In addition, by dividing the channel member 600 into a ventilation gasket 620 and a support gasket 630, the structure of the ventilation gasket 620 and the support gasket 630 can be simplified, which facilitates processing, and the support gasket 630 is arranged on the side of the ventilation gasket 620 facing the buffer member 400, so that the support gasket 630 can be used to protect the buffer member 400 to prevent the edge contour of the balance hole 621 on the ventilation gasket 620 from cutting the buffer member 400.

[0080] In some specific embodiments of the present invention, Figure 2 、 Figure 5 and Figure 7 As shown, the piston assembly 300 includes a piston rod 310 , a piston valve 320 and a guide assembly 330 .

[0081] One end of the piston rod 310 is connected to the bottom cover 700, 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 700, and the guide assembly 330, the second cylinder 200 and the first cylinder 100 jointly define the balance air chamber 210.

[0082] With this arrangement, 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 a compression state, the piston valve 320 can control the fluid in the compression chamber 110 to flow toward the recovery chamber 120, and when the shock absorber 1 is in a recovery state, the piston valve 320 can control the fluid in the recovery chamber 120 to flow toward the compression chamber 110. Furthermore, by providing the guide assembly 330, not only can the guide assembly 330 be utilized to separate the recovery chamber 120 from the balancing 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.

[0083] In addition, the guide assembly 330, the second cylinder 200 and the first cylinder 100 jointly define a balancing air chamber 210, which is connected to the balancing air duct 610. The balancing air chamber 210 can be connected to the outside through the balancing air duct 610 and the air vent 710. When the first cylinder 100 and the second cylinder 200 move relative to each other, the air pressure inside the balancing air chamber 210 can be kept consistent with the external air pressure so that the shock absorber 1 can move normally.

[0084] Specifically, when the first cylinder 100 moves toward the bottom cover 700 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 631, the first sub-channel 622, the balancing hole 621 and the air vent 710 in sequence. When the first cylinder 100 moves toward the bottom cover 700 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 710, the balancing hole 621, the first sub-channel 622 and the second sub-channel 631 in sequence, thereby ensuring the balance of the internal and external air pressures of the second cylinder 200.

[0085] A vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The vehicle includes the 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 according to the above-mentioned embodiment of the present invention, the shock absorber 1 connects the buffer 400 to the first cylinder 100, so that the buffer 400 can not only buffer the collision between the first cylinder 100 and the bottom cover 700, but also can set the buffer 400 and the bottom cover 700 at a distance to reduce the wear of the buffer 400 caused by dust and impurities accumulated at the bottom cover 700, which is beneficial to extending the service life of the buffer 400, and the buffer 400 is more reliable in buffering the collision between the first cylinder 100 and the bottom cover 700.

[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 (700) 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) is connected to one end of the first cylinder (100) facing the bottom cover (700) and is located between the first cylinder (100) and the bottom cover (700).

2. The vibration absorber (1) according to claim 1, characterized in that Also includes: A connecting seat (500) is connected to one end of the first cylinder (100) facing the bottom cover (700), and the buffer member (400) is connected to one side of the connecting seat (500) facing the bottom cover (700).

3. The vibration absorber (1) according to claim 2, characterized in that The connecting seat (500) comprises: a first connecting portion (510), the first connecting portion (510) extending along the circumference of the first cylinder (100), the first connecting portion (510) being sleeved outside the first cylinder (100) and connected to the first cylinder (100); a second connecting portion (520), the second connecting portion (520) being connected to the first connecting portion (510) and being arranged on a side of the first connecting portion (510) facing the bottom cover (700), the second connecting portion (520) protruding from an end of the first cylinder (100) facing the bottom cover (700), and the buffer member (400) being connected to the second connecting portion (520).

4. The vibration absorber (1) according to claim 3, characterized in that The connecting seat (500) further includes: A stopper (530), the stopper (530) being connected to the first connecting portion (510) and / or the second connecting portion (520), and the stopper (530) being located between the first cylinder (100) and the buffer (400).

5. The vibration absorber (1) according to claim 3, characterized in that The inner circumferential surface of the first connecting portion (510) is configured with an internal thread, and the outer circumferential surface of the first cylinder (100) is configured with an external thread, and the first connecting portion (510) is threadedly connected to the first cylinder (100); and / or, The second connecting portion (520) extends along the circumference of the first cylinder (100), and the buffer member (400) extends into the second connecting portion (520) and is interference-fitted with the second connecting portion (520).

6. The vibration absorber (1) according to claim 1, characterized in that A third connecting portion (130) is formed at one end of the first cylinder (100) facing the bottom cover (700), and the buffer member (400) extends into the third connecting portion (130) and is interference-fitted with the third connecting portion (130).

7. The vibration absorber (1) according to claim 1, characterized in that Also includes: A channel member (600) is provided between the buffer member (400) and the bottom cover (700), the channel member (600) is configured with a balancing air channel (610), and the bottom cover (700) is configured with a vent hole (710), and the interior space of the second cylinder (200) is communicated with the exterior of the second cylinder (200) through the balancing air channel (610) and the vent hole (710).

8. The vibration absorber (1) according to claim 7, characterized in that The channel member (600) comprises: a ventilation gasket (620), the ventilation gasket (620) being provided on a side of the bottom cover (700) facing the first cylinder (100), the ventilation gasket (620) being configured with a balancing hole (621), and forming a first sub-channel (622) between the ventilation gasket (620) and the piston assembly (300) and / or the second cylinder (200); A support gasket (630) is provided on a side of the ventilation gasket (620) facing the first cylinder (100), a second sub-channel (631) is formed between the support gasket (630) and the piston assembly (300) and / or the second cylinder (200), the first sub-channel (622) is respectively connected to the balancing hole (621) and the second sub-channel (631), and the balancing hole (621), the first sub-channel (622) and the second sub-channel (631) jointly define the balancing airway (610).

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 (700), 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 (700), 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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