Shock absorber and vehicle

Abstract

The present application discloses a shock absorber and a vehicle, the shock absorber comprising: an oil storage cylinder, the oil storage cylinder having an oil storage cavity, the side wall of the oil storage cylinder being provided with an installation port connected to the oil storage cavity; an intermediate cylinder, the intermediate cylinder being provided in the oil storage cavity, the intermediate cylinder having a first chamber, the side wall of the intermediate cylinder being provided with a side hole connected to the first chamber, the side hole corresponding to the position of the installation port; an electromagnetic valve assembly, the electromagnetic valve assembly being provided at the installation port, and a part of the electromagnetic valve assembly extending into the installation port and connected to the side hole. The present application arranges the electromagnetic valve assembly at the installation port of the oil storage cylinder, and a part of the electromagnetic valve assembly extending into the installation port and connected to the side hole on the intermediate cylinder, so as to realize the circulation of oil between the intermediate cylinder and the electromagnetic valve assembly, without welding the electromagnetic valve joint on the intermediate cylinder, so as to prevent the intermediate cylinder from being deformed due to welding, which may cause the intermediate cylinder and the electromagnetic valve assembly to be unable to be assembled and the sealing to fail, and effectively reduce the cost and process difficulty.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle vibration reduction, and more specifically, to a shock absorber and a vehicle having the shock absorber. Background Art

[0002] In existing vehicle shock absorbers, the external solenoid valve is generally welded to the middle cylinder through the solenoid valve joint. The middle cylinder of the shock absorber is relatively thin, and the wall thickness is generally only about 1mm. When welding the joint on the middle cylinder, it is easy to cause the middle cylinder to deform during the welding process, thereby affecting the assembly and sealing of the middle cylinder and the solenoid valve, which is costly and difficult to manufacture. Summary of the invention

[0003] One purpose of the present application is to provide a new technical solution for a shock absorber and a vehicle, which can at least solve the problem in the prior art that the shock absorber needs to weld a solenoid valve connector on the intermediate cylinder, which causes welding deformation of the intermediate cylinder.

[0004] According to the first aspect of the present application, a shock absorber is provided, comprising: an oil storage cylinder, the oil storage cylinder having an oil storage cavity, the side wall of the oil storage cylinder being provided with an installation port connected to the oil storage cavity; an intermediate cylinder, the intermediate cylinder being arranged in the oil storage cavity, the intermediate cylinder having a first chamber, the side wall of the intermediate cylinder being provided with a side hole connected to the first chamber, the side hole corresponding to the position of the installation port; and a solenoid valve assembly, the solenoid valve assembly being arranged at the installation port, and a part of the solenoid valve assembly extending into the installation port and connected to the side hole.

[0005] Optionally, the solenoid valve assembly includes: a solenoid valve seat, which defines an installation cavity and is arranged at the installation port; a solenoid valve, which is arranged on the solenoid valve seat; a solenoid valve cover plate, which is arranged at one end of the solenoid valve facing the middle cylinder and is provided with a valve hole, which is connected to the side hole.

[0006] Optionally, the intermediate cylinder is provided with a boss on the periphery of the side hole, the solenoid valve cover plate is provided with a mounting groove on the periphery of the valve hole, a first sealing ring is provided in the mounting groove, and the solenoid valve cover plate is fittedly connected to the boss through the mounting groove and the first sealing ring to connect the valve hole with the side hole.

[0007] Optionally, the shock absorber further comprises: an oil-blocking positioning sleeve, wherein the oil-blocking positioning sleeve is sleeved on the outer wall of the intermediate cylinder, and the oil-blocking positioning sleeve is in contact with the inner wall of the oil storage cylinder.

[0008] Optionally, the oil-blocking positioning sleeve is provided with a notch and a limiting hole, the notch extends along the axial direction of the oil-blocking positioning sleeve, the limiting hole is provided on the side wall of the oil-blocking positioning sleeve, and the limiting hole is communicated with the notch, and the limiting hole corresponds to the position of the side hole.

[0009] Optionally, a plurality of first oil holes are respectively provided at the inner wall and the outer wall of the end face of the oil baffle positioning sleeve, and the plurality of first oil holes are distributed at intervals along the circumference of the oil baffle positioning sleeve, and the side wall of the oil baffle positioning sleeve is provided with a plurality of hollow holes distributed at intervals.

[0010] Optionally, a plurality of ribs are further provided on the outer wall of the oil-blocking positioning sleeve, and the plurality of ribs extend along the axial direction and the circumferential direction of the oil-blocking positioning sleeve respectively.

[0011] Optionally, the shock absorber also includes: a working cylinder, which is arranged in the intermediate cylinder, and has a second chamber in the working cylinder, a connecting rod is arranged in the second chamber, and the connecting rod is movable in the working cylinder, and a bottom valve body and a guide sleeve are also arranged in the oil storage cylinder, the bottom valve body is provided with a first ring groove and a second ring groove, and the first ring groove and the second ring groove are distributed in a stepped manner in the radial direction of the bottom valve body, the guide sleeve is provided with a second oil-through hole connected to the second chamber, and the guide sleeve is also provided with a third ring groove and a fourth ring groove, and the third ring groove and the fourth ring groove are distributed in a stepped manner in the radial direction of the guide sleeve; wherein, the first ring groove and the third ring groove correspond to each other, and two ends of the intermediate cylinder are connected to the first ring groove and the third ring groove respectively, and the second ring groove and the fourth ring groove correspond to each other, and two ends of the working cylinder are connected to the second ring groove and the fourth ring groove respectively.

[0012] Optionally, the shock absorber also includes: a working cylinder, a side wall of the working cylinder is provided with a third oil hole, both ends of the intermediate cylinder are respectively provided with grooves, each of the grooves is respectively provided with a second sealing ring, the working cylinder is arranged in the intermediate cylinder, and the two ends of the working cylinder are respectively connected to the grooves through the second sealing rings.

[0013] According to a second aspect of the present application, a vehicle is provided, comprising the shock absorber described in the above embodiment.

[0014] According to one embodiment of the present disclosure, the solenoid valve assembly is arranged at the installation port of the oil storage cylinder, and a part of the solenoid valve assembly is extended into the installation port to connect with the side hole on the intermediate cylinder, so that the oil can flow between the intermediate cylinder and the solenoid valve assembly. There is no need to weld the solenoid valve joint on the intermediate cylinder, which prevents the intermediate cylinder from being deformed due to welding, resulting in the inability to assemble the intermediate cylinder and the solenoid valve assembly and sealing failure, thereby effectively reducing the cost and process difficulty.

[0015] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0017] Figure 1 is a cross-sectional view of a shock absorber of the present invention;

[0018] Figure 2 yes Figure 1 A partial enlarged view of the middle area A;

[0019] Figure 3 It is a structural schematic diagram of the solenoid valve of the shock absorber of the present invention;

[0020] Figure 4 It is a schematic diagram of assembling the oil retaining positioning sleeve and the intermediate cylinder of the shock absorber of the present invention;

[0021] Figure 5 It is another assembly schematic diagram of the oil retaining positioning sleeve and the intermediate cylinder of the shock absorber of the present invention;

[0022] Figure 6 It is a cross-sectional view of the oil retaining positioning sleeve and the intermediate cylinder of the shock absorber of the present invention after being assembled;

[0023] Figure 7 is a cross-sectional view of the shock absorber of the present invention at the position of the oil retaining positioning sleeve;

[0024] Figure 8 is a side view of the oil retaining and positioning sleeve of the shock absorber of the present invention;

[0025] Fig. 9 is another side view of the oil retaining and positioning sleeve of the shock absorber of the present invention;

[0026] Fig.10 It is a cross-sectional view of the oil retaining positioning sleeve of the shock absorber of the present invention.

[0027] Reference numerals:

[0028] Shock absorber 100;

[0029] Oil storage cylinder 10;

[0030] Intermediate cylinder 20; boss 21; side hole 22;

[0031] Solenoid valve assembly 30; solenoid valve seat 31; solenoid valve 32; solenoid valve cover plate 33; valve hole 34; mounting groove 35; first sealing ring 36;

[0032] Oil blocking positioning sleeve 40; notch 41; limiting hole 42; first oil through hole 43; hollow hole 44; rib 45;

[0033] Working cylinder 50; second chamber 51; connecting rod 52;

[0034] Bottom valve body 60; first annular groove 61; second annular groove 62;

[0035] Guide sleeve 70; third annular groove 71; fourth annular groove 72; second oil hole 73;

[0036] Blocking cover 81; Mounting member 82. DETAILED DESCRIPTION

[0037] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0038] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0039] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0040] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0041] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0042] The shock absorber 100 according to the embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0043] like Figure 1 As shown, the shock absorber 100 according to the embodiment of the present invention includes an oil storage cylinder 10 , an intermediate cylinder 20 and a solenoid valve assembly 30 .

[0044] Specifically, the oil storage cylinder 10 has an oil storage cavity, and the side wall of the oil storage cylinder 10 is provided with an installation port connected to the oil storage cavity. The intermediate cylinder 20 is arranged in the oil storage cavity, and the intermediate cylinder 20 has a first chamber, and the side wall of the intermediate cylinder 20 is provided with a side hole 22 connected to the first chamber, and the side hole 22 corresponds to the position of the installation port. The solenoid valve assembly 30 is arranged at the installation port, and a part of the solenoid valve assembly 30 extends into the installation port and communicates with the side hole 22.

[0045] In other words, see Figure 1 , the shock absorber 100 according to the embodiment of the present invention is a damping adjustable shock absorber 100. The shock absorber 100 is mainly composed of an oil storage cylinder 10, an intermediate cylinder 20 and a solenoid valve assembly 30. Among them, the oil storage cylinder 10 has an oil storage chamber for containing oil (which can be called shock absorbing oil). The side wall of the oil storage cylinder 10 is provided with a mounting port, and the mounting port is connected to the oil storage chamber. The intermediate cylinder 20 is arranged in the oil storage chamber, and a certain gap is formed between the intermediate cylinder 20 and the oil storage cylinder 10, and the oil can circulate in the gap. The intermediate cylinder 20 has a first chamber for containing oil, and the side wall of the intermediate cylinder 20 is provided with a side hole 22, and the side hole 22 is connected to the first chamber, and the oil in the intermediate cylinder 20 can be discharged from the intermediate cylinder 20 through the side hole 22. The position of the side hole 22 on the middle cylinder 20 corresponds to the position of the mounting port on the oil storage cylinder 10. The solenoid valve assembly 30 is installed at the mounting port of the oil storage cylinder 10, and a part of the solenoid valve assembly 30 extends into the mounting port and communicates with the side hole 22. The oil in the middle cylinder 20 can be introduced into the solenoid valve assembly 30 through the side hole 22, and the oil can then flow back to the oil storage cylinder 10 through the solenoid valve assembly 30. The oil flowing back into the oil storage cylinder 10 can finally enter the middle cylinder 20 again, so that the oil can circulate back and forth between the middle cylinder 20, the solenoid valve assembly 30 and the oil storage cylinder 10, thereby realizing the function of the compression and restoration damping force of the shock absorber 100.

[0046] It should be noted that the damping adjustment principle of the shock absorber 100 of the present application is to apply currents of different sizes to the solenoid valve assembly 30 to adjust the flow channel opening inside the solenoid valve assembly 30, thereby ensuring that the flow channel opening inside the solenoid valve assembly 30 can be opened to a specified size, thereby achieving a continuously adjustable function of the damping force size (different damping force values) of the shock absorber 100.

[0047] Therefore, the shock absorber 100 of the present application sets the external solenoid valve assembly 30 on the oil storage cylinder 10, and ensures that the solenoid valve assembly 30 is connected to the side hole 22 on the intermediate cylinder 20, so as to realize the conduction of oil between the intermediate cylinder 20 and the solenoid valve assembly 30 (saving the process of welding the solenoid valve 32 joint on the intermediate cylinder 20). It is not necessary to weld the solenoid valve 32 joint on the intermediate cylinder 20 to realize the connection between the intermediate cylinder 20 and the solenoid valve assembly 30, which saves parts and components, and can also prevent the intermediate cylinder 20 from being deformed due to welding, which may cause the intermediate cylinder 20 and the solenoid valve assembly 30 to be unable to be assembled and the sealing to fail, effectively reducing the cost and process difficulty.

[0048] According to one embodiment of the present invention, the solenoid valve assembly 30 includes a solenoid valve seat 31 , a solenoid valve 32 and a solenoid valve cover plate 33 .

[0049] Specifically, a mounting cavity is defined in the solenoid valve seat 31, and the solenoid valve seat 31 is disposed at the mounting opening. The solenoid valve 32 is disposed on the solenoid valve seat 31. The solenoid valve cover plate 33 is disposed at one end of the solenoid valve 32 facing the middle cylinder 20, and the solenoid valve cover plate 33 is provided with a valve hole 34, which is communicated with the side hole 22.

[0050] That is to say, Figure 1 and Figure 3 As shown, the solenoid valve assembly 30 is mainly composed of a solenoid valve seat 31, a solenoid valve 32 and a solenoid valve cover plate 33. Among them, a mounting cavity is provided in the solenoid valve seat 31, and the solenoid valve seat 31 is arranged at the mounting port of the oil storage cylinder 10. The solenoid valve seat 31 can be welded to the oil storage cylinder 10 to improve the stability of the solenoid valve 32 installed on the oil storage cylinder 10. The solenoid valve 32 is installed on the solenoid valve seat 31. The solenoid valve cover plate 33 is arranged at one end of the solenoid valve 32 facing the middle cylinder 20, and the solenoid valve cover plate 33 is provided with a valve hole 34, and the valve hole 34 is connected with the side hole 22. The oil in the middle cylinder 20 can be introduced into the valve hole 34 through the side hole 22, and then enter the solenoid valve 32. By applying currents of different magnitudes to the solenoid valve assembly 30, the flow channel opening inside the solenoid valve assembly 30 can be adjusted to ensure that the flow channel opening inside the solenoid valve assembly 30 can be opened to a specified magnitude, thereby achieving a continuously adjustable function of the damping force magnitude (different damping force values) of the shock absorber 100.

[0051] It should be noted that, compared with the prior art, the prior art generally opens a hole on the middle cylinder 20, welds the solenoid valve connector at the hole, installs a sealing ring on the bridge assembly, and installs a limit plate on the solenoid valve seat 31, and the bridge assembly is installed on the limit plate for axial limit fixing. At the same time, the bridge assembly is inserted into the hole of the solenoid valve 32 connector for radial limit fixing, and is sealed by a sealing ring, and the solenoid valve cover plate 33 is attached to the end face of the bridge assembly. The prior art requires a large number of parts, and the additional solenoid valve connector, bridge assembly and limit plate not only increase the manufacturing cost, but also increase the height of the solenoid valve assembly 30. In actual applications, the height of the solenoid valve assembly 30 should be as small as possible to prevent the solenoid valve assembly 30 from interfering with the vehicle chassis or body, which brings difficulties to the overall vehicle layout of the shock absorber 100.

[0052] That is to say, compared with the prior art, the solenoid valve assembly 30 of the present application eliminates structures such as the solenoid valve connector, the bridge assembly and the limit plate, reduces the height of the solenoid valve 32, effectively prevents interference between the solenoid valve 32 and the vehicle chassis or body, and facilitates the installation and layout of the vehicle suspension.

[0053] On the other hand, in the prior art, the solenoid valve 32 joint needs to be welded on the intermediate cylinder 20. The intermediate cylinder 20 of the shock absorber 100 is relatively thin, generally with a wall thickness of about 1 mm. It is easy to cause the intermediate cylinder 20 to be deformed during welding of the joint. Welding deformation will cause the intermediate cylinder 20 and the solenoid valve assembly 30 to be unable to be assembled and the sealing to fail, thereby increasing costs and process difficulty.

[0054] It can be seen that the solenoid valve assembly 30 of the present application and the solenoid valve seat 31 are welded at the mounting port of the oil storage cylinder 10, the solenoid valve 32 and the solenoid valve cover plate 33 are installed on the solenoid valve seat 31, and it is only necessary to ensure that the valve hole 34 on the solenoid valve cover is connected with the side hole 22 on the intermediate cylinder 20, thereby reducing the use of parts and components and preventing the intermediate cylinder 20 from being deformed due to welding, which may lead to the problem that the intermediate cylinder 20 and the solenoid valve assembly 30 cannot be assembled and the sealing fails.

[0055] In some specific embodiments of the present invention, the intermediate cylinder 20 is provided with a boss 21 on the periphery of the side hole 22, the solenoid valve cover plate 33 is provided with a mounting groove 35 on the periphery of the valve hole 34, a first sealing ring 36 is provided in the mounting groove 35, and the solenoid valve cover plate 33 is fittedly connected to the boss 21 through the mounting groove 35 and the first sealing ring 36 so that the valve hole 34 is connected to the side hole 22.

[0056] In other words, Figure 4 and Figure 5 As shown, on the side of the middle cylinder 20, a boss 21 is provided at the peripheral position of the side hole 22, and the side hole 22 is provided on the boss 21. The solenoid valve cover plate 33 is provided with a mounting groove 35 at the peripheral position of the valve hole 34, and a first sealing ring 36 can be installed in the mounting groove 35. After the solenoid valve assembly 30 is installed in place, the solenoid valve cover plate 33 and the boss 21 on the middle cylinder 20 are tightly fitted, and the mounting groove 35 of the solenoid valve cover plate 33 and the boss 21 on the middle cylinder 20 are sealed by the first sealing ring 36, which can further ensure that the oil (vibration damping oil) will not leak when it flows into the solenoid valve assembly 30 from the side hole 22.

[0057] According to an embodiment of the present invention, the shock absorber 100 further includes: an oil retaining positioning sleeve 40 , which is sleeved on the outer wall of the middle cylinder 20 and fits the inner wall of the oil storage cylinder 10 .

[0058] That is to say, Figure 1 and Figure 4As shown, in the present application, during the installation process of the solenoid valve assembly 30 and the intermediate cylinder 20, the solenoid valve cover plate 33 fits tightly on the boss 21 of the intermediate cylinder 20, providing a certain lateral force to the intermediate cylinder 20. This lateral force will cause the intermediate cylinder 20 to be unable to maintain concentricity with the oil storage cylinder 10. The non-concentricity between the intermediate cylinder 20 and the oil storage cylinder 10 will cause difficulty in assembling the end face of the intermediate cylinder 20 and other structures of the shock absorber 100 (for example, the guide sleeve 70 or the bottom valve body 60). In order to solve the problem that the intermediate cylinder 20 and the oil storage cylinder 10 cannot maintain concentricity, the shock absorber 100 is also provided with an oil stop positioning sleeve 40. The oil stop positioning sleeve 40 can be sleeved on the outer wall of the intermediate cylinder 20, and the outer wall of the oil stop positioning sleeve 40 fits with the inner wall of the oil storage cylinder 10, so that the intermediate cylinder 20 can be reliably positioned (such as Figure 1 and Figure 7 After the electromagnetic valve cover plate 33 is pressed and fitted with the boss 21 of the intermediate cylinder 20, the intermediate cylinder 20 can also remain concentric with the oil storage cylinder 10, which facilitates the assembly of subsequent structural parts and the intermediate cylinder 20.

[0059] In some specific embodiments of the present invention, the oil-blocking positioning sleeve 40 is provided with a notch 41 and a limiting hole 42, the notch 41 extends along the axial direction of the oil-blocking positioning sleeve 40, the limiting hole 42 is provided on the side wall of the oil-blocking positioning sleeve 40, and the limiting hole 42 is connected to the notch 41, and the limiting hole 42 corresponds to the position of the side hole 22.

[0060] In other words, see Figure 4 and Figure 5 The oil-blocking positioning sleeve 40 is provided with a notch 41 and a limiting hole 42. The notch 41 extends along the axial direction of the oil-blocking positioning sleeve 40. By providing the notch 41, the cross section of the oil-blocking positioning sleeve 40 in its radial direction is a non-closed ring. The design of the notch 41 can make the oil-blocking positioning sleeve 40 have a certain amount of elastic deformation, which is conducive to absorbing the manufacturing tolerances of the intermediate cylinder 20 and the oil-blocking positioning sleeve 40, ensuring that the oil-blocking positioning sleeve 40 can always tightly hold the intermediate cylinder 20, and improving the fit of the oil-blocking positioning sleeve 40 on the outer wall of the intermediate cylinder 20. The limiting hole 42 is provided on the side wall of the oil-blocking positioning sleeve 40, and the limiting hole 42 is roughly located in the middle position of the outer wall of the oil-blocking positioning sleeve 40. The radial sides of the limiting hole 42 are respectively connected to the notch 41 on the oil-blocking positioning sleeve 40. In the present application, the limiting hole 42 corresponds to the position of the side hole 22 (boss 21), and the boss 21 is located in the limiting hole 42. By setting a limiting hole 42 on the oil baffle positioning sleeve 40, the boss 21 on the intermediate cylinder 20 can provide a fixed limit for the oil baffle positioning sleeve 40 to prevent the oil baffle positioning sleeve 40 from moving on the outer surface of the intermediate cylinder 20, thereby facilitating the stable implementation of the oil baffle function and avoiding abnormal noise.

[0061] In some specific embodiments of the present invention, a plurality of first oil holes 43 are respectively provided at the positions of the inner wall and the outer wall of the end face of the oil baffle positioning sleeve 40, and the plurality of first oil holes 43 are distributed at intervals along the circumference of the oil baffle positioning sleeve 40, and the side wall of the oil baffle positioning sleeve 40 is provided with a plurality of hollow holes 44 distributed at intervals.

[0062] That is to say, Figures 6 to 10 As shown, the oil-blocking positioning sleeve 40 is also provided with a plurality of first oil-passing holes 43, and the plurality of first oil-passing holes 43 can be respectively distributed on both sides of the end surface of the oil-blocking positioning sleeve 40 (one side facing the intermediate cylinder 20, and one side facing the oil storage cylinder 10). The plurality of first oil-passing holes 43 on both sides of the end surface of the oil-blocking positioning sleeve 40 can be distributed at intervals along the circumference of the oil-blocking positioning sleeve 40. The side wall of the oil-blocking positioning sleeve 40 can be provided with a plurality of hollow holes 44 distributed at intervals. The design of the first oil-passing holes 43 and the hollow holes 44 can form a mesh-like structure on the side wall of the oil-blocking positioning sleeve 40, so that the oil-blocking positioning sleeve 40 has the function of eliminating oil foam. When the vehicle passes through harsh road conditions and is driven fiercely, the oil in the shock absorber 100 flows fast and vibrates violently, and a large amount of foam is easily generated. The presence of oil foam leads to the phenomenon of empty travel and deteriorates the function of the shock absorber 100. These mesh hollow designs on the oil-blocking positioning sleeve 40 can block and eliminate the foam in the shock absorber oil and improve the performance of the shock absorber 100. At the same time, by providing the hollow hole 44 on the oil baffle positioning sleeve 40, the weight of the oil baffle positioning sleeve 40 can also be reduced, thereby meeting the design requirements of lightweight vehicles.

[0063] According to an embodiment of the present invention, a plurality of ribs 45 are further provided on the outer wall of the oil-blocking positioning sleeve 40 , and the plurality of ribs 45 extend along the axial direction and the circumferential direction of the oil-blocking positioning sleeve 40 .

[0064] In other words, see Figure 8 and Fig. 9 , a plurality of ribs 45 may also be provided on the oil-blocking positioning sleeve 40, and the plurality of ribs 45 may extend along the outer wall of the oil-blocking positioning sleeve. For example, the plurality of ribs 45 may extend along the axial and circumferential directions of the oil-blocking positioning sleeve 40 to form transverse ribs 45 and vertical ribs 45. By providing the ribs 45 on the oil-blocking positioning sleeve 40, a mesh structure may be formed between the first oil-passing hole 43 and the hollow hole 44. These structural designs may ensure that the vibration damping oil can flow normally and meet the requirements of oil circulation during the compression and recovery operation of the shock absorber 100. At the same time, it also has the function of eliminating the foam of the vibration damping oil. In addition, by providing the ribs 45 on the oil-blocking positioning sleeve 40, the overall structural strength of the oil-blocking positioning sleeve 40 may be effectively enhanced, and the service life of the oil-blocking positioning sleeve 40 may be improved.

[0065] According to one embodiment of the present invention, the shock absorber 100 further includes: a working cylinder 50, the working cylinder 50 is arranged in the middle cylinder 20, the working cylinder 50 has a second chamber 51, the second chamber 51 is provided with a connecting rod 52, the connecting rod 52 is movable in the working cylinder 50, the oil storage cylinder 10 is also provided with a bottom valve body 60 and a guide sleeve 70, the bottom valve body 60 is provided with a first annular groove 61 and a second annular groove 62, the first annular groove 61 and the second annular groove 62 are distributed in a stepped manner in the radial direction of the bottom valve body 60, and the guide sleeve 70 A second oil hole 73 connected to the second chamber 51 is provided, and the guide sleeve 70 is also provided with a third annular groove 71 and a fourth annular groove 72. The third annular groove 71 and the fourth annular groove 72 are distributed in a stepped manner in the radial direction of the guide sleeve 70; wherein, the first annular groove 61 and the third annular groove 71 correspond to each other, and the two ends of the intermediate cylinder 20 are respectively connected to the first annular groove 61 and the third annular groove 71, and the second annular groove 62 and the fourth annular groove 72 correspond to each other, and the two ends of the working cylinder 50 are respectively connected to the second annular groove 62 and the fourth annular groove 72.

[0066] That is to say, Figure 1 As shown, the shock absorber 100 also includes a working cylinder 50, which has a second chamber 51 for containing oil. The working cylinder 50 is arranged in the middle cylinder 20, and has a second chamber 51 for containing oil. A connecting rod 52 is arranged in the second chamber 51. The connecting rod 52 is movable in the working cylinder 50. The movement of the connecting rod 52 can drive the oil to flow in the working cylinder 50, so that the oil in the shock absorber 100 is circulated and conducted between the working cylinder 50, the middle cylinder 20, the solenoid valve 32 and the oil storage cylinder 10, thereby realizing the compression and restoration damping force function of the shock absorber 100.

[0067] See also Figure 1 A bottom valve body 60 and a guide sleeve 70 are also provided in the oil storage cylinder 10, wherein the bottom valve body 60 is located at the lower end of the shock absorber 100, and the guide sleeve 70 is located at the upper end of the shock absorber 100. The bottom valve body 60 is provided with a first annular groove 61 and a second annular groove 62, which are distributed in a stepped manner in the radial direction of the bottom valve body 60, and the first annular groove 61 and the second annular groove 62 form a large step shaft and a small step shaft on the bottom valve body 60.

[0068] like Figure 1 and Figure 2 As shown, the guide sleeve 70 is provided with a second oil hole 73, which is communicated with the second chamber 51. The damping oil in the working cylinder 50 can flow into the intermediate cylinder 20 through the second oil hole 73 on the guide sleeve 70. The guide sleeve 70 is also provided with a third annular groove 71 and a fourth annular groove 72. The third annular groove 71 and the fourth annular groove 72 are distributed in a stepped manner in the radial direction of the guide sleeve 70. The third annular groove 71 and the fourth annular groove 72 form a large step shaft and a small step shaft on the guide sleeve 70 (see Figure 2). The first annular groove 61 of the bottom valve body 60 corresponds to the third annular groove 71 of the guide sleeve 70, and the two ends of the intermediate cylinder 20 are respectively connected to the first annular groove 61 and the third annular groove 71, so that the intermediate cylinder 20 is installed in the shock absorber 100. The second annular groove 62 of the bottom valve body 60 corresponds to the fourth annular groove 72 of the guide sleeve 70, and the two ends of the working cylinder 50 are respectively connected to the second annular groove 62 and the fourth annular groove 72, so that the working cylinder 50 is installed in the shock absorber 100.

[0069] In the installation process of the solenoid valve assembly 30 and the intermediate cylinder 20 of the present application, the solenoid valve cover plate 33 is tightly fitted on the boss 21 of the intermediate cylinder 20, providing a certain lateral force to the intermediate cylinder 20. The lateral force will cause the intermediate cylinder 20 to be unable to maintain concentricity with the oil storage cylinder 10. The non-concentricity between the intermediate cylinder 20 and the oil storage cylinder 10 will make it difficult to assemble the intermediate cylinder 20 and the guide sleeve 70. In order to solve the problem of the difficult assembly of the guide sleeve 70 in the shock absorber 100, the shock absorber 100 is provided with an oil-blocking positioning sleeve 40. The oil-blocking positioning sleeve 40 can be sleeved on the outer wall of the intermediate cylinder 20, and the outer wall of the oil-blocking positioning sleeve 40 is fitted with the inner wall of the oil storage cylinder 10, so that the intermediate cylinder 20 is reliably positioned. After the solenoid valve cover plate 33 is pressed and fitted with the boss 21 of the intermediate cylinder 20, the intermediate cylinder 20 can also maintain concentricity with the oil storage cylinder 10, which is convenient for the subsequent assembly of the guide sleeve 70 and the intermediate cylinder 20.

[0070] In the present application, the circulation process of the damping oil in the shock absorber 100 is as follows: the damping oil in the working cylinder 50 flows into the middle cylinder 20 through the second oil hole 73 of the guide sleeve 70, and then flows into the solenoid valve assembly 30 through the side hole 22 on the middle cylinder 20, and the oil (damping oil) flows back to the oil storage cylinder 10 through the solenoid valve assembly 30, and the oil in the oil storage cylinder 10 flows into the working cylinder 50 through the bottom valve body 60, and the cycle is repeated to realize the compression and restoration damping force function of the shock absorber 100. At the same time, the present application can adjust the flow channel opening inside the solenoid valve assembly 30 by applying different currents to the solenoid valve assembly 30, ensuring that the flow channel opening inside the solenoid valve assembly 30 can be opened to a specified size, thereby realizing the continuous adjustable function of the damping force size (different damping force values) of the shock absorber 100.

[0071] Of course, in some other specific embodiments of the present application, the shock absorber 100 also includes: a working cylinder 50, a third oil hole is provided on the side wall of the working cylinder 50, grooves are provided at both ends of the intermediate cylinder 20, a second sealing ring is provided in each groove, the working cylinder 50 is arranged in the intermediate cylinder 20, and the two ends of the working cylinder 50 are connected to the grooves through the second sealing rings.

[0072] In other words, the present application can open a third oil hole on the side wall of the working cylinder 50, and the upper and lower ends of the intermediate cylinder 20 can be fixed on the outer surface of the working cylinder 50 respectively. Among them, the two ends of the intermediate cylinder 20 can be respectively provided with grooves, and the second sealing ring is respectively installed in each groove, and the working cylinder 50 is installed in the intermediate cylinder 20. The two ends of the working cylinder 50 are respectively connected to the grooves through the second sealing ring, and the radial sealing of the working cylinder 50 is achieved by relying on the second sealing ring. At the same time, by opening the third oil hole on the working cylinder 50, the damping oil can flow from the second oil hole 73 of the working cylinder 50 into the intermediate cylinder 20, so as to achieve the adjustable damping performance of the shock absorber 100.

[0073] Of course, for other structures of the shock absorber 100, see, for example, Figure 1 Both ends of the oil storage cylinder 10 are sleeved with a cover 81 to block dust. The outer wall of the oil storage cylinder 10 is also provided with a mounting part 82 connected to the vehicle body. The specific working principle of the shock absorber 100, etc., can be understood and implemented by those skilled in the art and will not be described in detail in this application.

[0074] In summary, according to the shock absorber 100 of the embodiment of the present invention, by arranging the solenoid valve assembly 30 at the installation port of the oil storage cylinder 10, a part of the solenoid valve assembly 30 is extended into the installation port to communicate with the side hole 22 on the intermediate cylinder 20, so as to realize the circulation of oil between the intermediate cylinder 20 and the solenoid valve assembly 30, and there is no need to weld the solenoid valve 32 joint on the intermediate cylinder 20, so as to prevent the intermediate cylinder 20 from being deformed due to welding, which may cause the intermediate cylinder 20 and the solenoid valve assembly 30 to be unable to be assembled and the sealing to fail, and effectively reduce the cost and process manufacturing difficulty. The shock absorber 100 of the present application reduces the number of parts of the solenoid valve assembly 30, reduces the height of the solenoid valve 32, and facilitates the whole vehicle structure layout of the shock absorber 100. In addition, by arranging the oil retaining positioning sleeve 40 on the outer wall of the intermediate cylinder 20, the intermediate cylinder 20 can be reliably positioned, and at the same time, the foam generated by the vibration damping oil can be eliminated by the oil retaining positioning sleeve 40, so as to realize the oil retaining function and avoid the occurrence of abnormal noise.

[0075] According to the second aspect of the present invention, a vehicle is also provided, comprising the shock absorber 100 in the above embodiment. Since the shock absorber 100 according to the embodiment of the present invention has the above technical effects, the vehicle according to the embodiment of the present invention should also have the corresponding technical effects, that is, the vehicle of the present application, by adopting the shock absorber 100, does not need to weld the solenoid valve 32 joint on the intermediate cylinder 20, and prevents the intermediate cylinder 20 from being deformed due to welding, which causes the intermediate cylinder 20 and the solenoid valve assembly 30 to be unable to be assembled and the sealing to fail, effectively reducing the cost and process manufacturing difficulty. The shock absorber 100 of the present application reduces the number of parts of the solenoid valve assembly 30, reduces the height of the solenoid valve 32, and facilitates the vehicle structure layout. In addition, by arranging the oil retaining positioning sleeve 40 on the outer wall of the intermediate cylinder 20, the intermediate cylinder 20 can be reliably positioned, and the oil retaining positioning sleeve 40 can also eliminate the foam generated by the vibration damping oil, thereby realizing the oil retaining function and avoiding the occurrence of abnormal noise.

[0076] Of course, for those skilled in the art, other structures of the vehicle and its working principles are understandable and achievable, and will not be described in detail in this application.

[0077] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A shock absorber, characterized in that: include: An oil storage cylinder, wherein the oil storage cylinder has an oil storage cavity, and a side wall of the oil storage cylinder is provided with a mounting port communicating with the oil storage cavity; An intermediate cylinder, the intermediate cylinder is arranged in the oil storage cavity, the intermediate cylinder has a first chamber, a side hole communicating with the first chamber is arranged on a side wall of the intermediate cylinder, and the side hole corresponds to the position of the mounting port; A solenoid valve assembly, wherein the solenoid valve assembly is arranged at the installation opening, and a portion of the solenoid valve assembly extends into the installation opening and communicates with the side hole; The shock absorber further comprises: an oil blocking sleeve, the oil blocking sleeve being sleeved on the outer wall of the intermediate cylinder and being fitted with the inner wall of the oil storage cylinder; the oil blocking sleeve being provided with a notch and a limiting hole, the notch extending along the axial direction of the oil blocking sleeve, the limiting hole being provided on the side wall of the oil blocking sleeve, the limiting hole being communicated with the notch, and the position of the limiting hole corresponds to the position of the side hole; A plurality of first oil holes are respectively arranged at the inner wall and the outer wall of the end face of the oil-blocking positioning sleeve, and the plurality of first oil holes are spaced apart and distributed along the circumference of the oil-blocking positioning sleeve. A plurality of spaced apart and distributed hollow holes are arranged on the side wall of the oil-blocking positioning sleeve.

2. The shock absorber according to claim 1, characterized in that: The solenoid valve assembly comprises: A solenoid valve seat, wherein a mounting cavity is defined in the solenoid valve seat, and the solenoid valve seat is arranged at the mounting opening; A solenoid valve, wherein the solenoid valve is arranged on the solenoid valve seat; The solenoid valve cover plate is arranged at one end of the solenoid valve facing the middle cylinder, and the solenoid valve cover plate is provided with a valve hole, and the valve hole is communicated with the side hole.

3. The shock absorber according to claim 2, characterized in that: The intermediate cylinder is provided with a boss on the periphery of the side hole, the solenoid valve cover plate is provided with a mounting groove on the periphery of the valve hole, a first sealing ring is provided in the mounting groove, and the solenoid valve cover plate is fitted and connected to the boss through the mounting groove and the first sealing ring to connect the valve hole with the side hole.

4. The shock absorber according to claim 1, characterized in that: A plurality of ribs are also provided on the outer wall of the oil-blocking positioning sleeve, and the plurality of ribs extend along the axial direction and the circumferential direction of the oil-blocking positioning sleeve respectively.

5. The vibration absorber according to claim 1, characterized in that: Also includes: A working cylinder, wherein the working cylinder is arranged in the intermediate cylinder, and the working cylinder has a second chamber, and the second chamber is provided with a connecting rod, and the connecting rod is movable in the working cylinder, and the oil storage cylinder is also provided with a bottom valve body and a guide sleeve, and the bottom valve body is provided with a first ring groove and a second ring groove, and the first ring groove and the second ring groove are distributed in a stepped manner in the radial direction of the bottom valve body, and the guide sleeve is provided with a second oil-through hole connected with the second chamber, and the guide sleeve is also provided with a third ring groove and a fourth ring groove, and the third ring groove and the fourth ring groove are distributed in a stepped manner in the radial direction of the guide sleeve; wherein, the first ring groove and the third ring groove correspond to each other, and the two ends of the intermediate cylinder are connected to the first ring groove and the third ring groove respectively, and the second ring groove and the fourth ring groove correspond to each other, and the two ends of the working cylinder are connected to the second ring groove and the fourth ring groove respectively.

6. The shock absorber according to claim 1, characterized in that Also includes: A working cylinder, wherein a third oil hole is provided on the side wall of the working cylinder, grooves are provided at both ends of the intermediate cylinder, a second sealing ring is provided in each of the grooves, the working cylinder is arranged in the intermediate cylinder, and the two ends of the working cylinder are connected to the grooves through the second sealing rings.

7. A vehicle, characterized in that: The invention comprises the vibration absorber according to any one of claims 1 to 6.

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