Shock absorber base and shock absorber

Abstract

The utility model provides a shock absorber base and a shock absorber. The shock absorber base comprises a first base part and a second base part, the first base part comprises a main body part and a mounting structure located on the first side of the main body part in the axial direction, and the first base part further comprises a first connecting structure located on the second side of the main body part in the axial direction. A first connecting structure connected with the first base part is arranged on the first base part, a second connecting structure connected with the first base part is arranged on the second base part, a cavity is formed between the first base part and the second base part, the first connecting structure comprises an annular wall, and the first base part comprises a first passage and a second passage. One end of the first passage and one end of the second passage both extend to the surface, surrounded by the first connecting structure, of the main body part. According to the shock absorber base, the manufacturing difficulty can be reduced, and platform design is facilitated.

Description

Technical Field

[0001] The embodiments of this utility model relate to the field of automotive shock absorbers, and more specifically, to a shock absorber base and a shock absorber including the shock absorber base. Background Technology

[0002] As a core component of a vehicle's suspension system, the shock absorber is responsible for mitigating the impact of uneven road surfaces and improving vehicle stability and comfort. With the development of the automotive industry, especially the increasing demands for comfort and handling in passenger and commercial vehicles, shock absorber technology is constantly advancing. Traditional shock absorbers typically consist of components such as springs, cylinders, and pistons, achieving their damping effect by absorbing and attenuating the impact between the wheels and the vehicle body.

[0003] However, existing automotive shock absorber designs face several challenges in the manufacturing process. Firstly, the design and manufacture of the shock absorber base are complex, typically requiring precision machining processes and costly manufacturing equipment, which increases overall production costs. Furthermore, the need for customized base structures for different vehicle models presents difficulties in platform-based design and mass production of shock absorbers. To meet the requirements of different vehicle types, the base design often requires multiple adjustments and optimizations, further extending the production cycle and increasing costs.

[0004] Secondly, in existing technologies, the strength and stiffness design of shock absorber bases often needs to be balanced. While providing sufficient support, the overall weight of the shock absorber must also be controlled. Overly complex base structures may lead to unnecessary weight increases, affecting the vehicle's fuel consumption and handling performance.

[0005] Therefore, how to simplify the base structure, reduce manufacturing difficulty, and support the common platform design of different vehicle models while ensuring the performance of the shock absorber remains an important issue facing current shock absorber technology. Utility Model Content

[0006] To address the manufacturing difficulties and platform-based design issues present in shock absorbers, embodiments of this utility model provide a shock absorber base and a shock absorber including the shock absorber base. The shock absorber base and shock absorber according to this utility model can reduce manufacturing difficulties and facilitate platform-based design of the shock absorber base.

[0007] According to one aspect of the present invention, a shock absorber base is provided, comprising a first base portion and a second base portion, wherein the first base portion includes a main body portion and a mounting structure located on a first side in the axial direction of the main body portion, the mounting structure being configured to connect with the working cylinder of the shock absorber, the first base portion further includes a first connecting structure located on a second side in the axial direction of the main body portion, the second base portion being provided with a second connecting structure connected to the first base portion, wherein a cavity is formed between the first base portion and the second base portion when the first connecting structure of the first base portion and the second connecting structure of the second base portion are connected to each other, the first connecting structure including an annular wall, the first base portion including a first passage and a second passage, one end of the first passage and one end of the second passage both extending to the surface of the main body portion surrounded by the first connecting structure.

[0008] In some embodiments of the present invention, the mounting structure includes a first annular protrusion and a second annular protrusion, the first annular protrusion being located outside the second annular protrusion and spaced apart from each other, the other end of the first passage extending to the surface of the main body surrounded by the second annular protrusion, and the other end of the second passage extending to the surface of the main body located between the first annular protrusion and the second annular protrusion.

[0009] In some embodiments of the present invention, the first base portion further includes a first solenoid valve mounting cylinder and a second solenoid valve mounting cylinder. The first solenoid valve mounting cylinder and the second solenoid valve mounting cylinder protrude outward from the side of the main body portion and are located between the first side and the second side. The first passage passes through the internal space of the first solenoid valve mounting cylinder in the middle, and the second passage passes through the internal space of the second solenoid valve mounting cylinder in the middle.

[0010] In some embodiments of the present invention, the first passage and the second passage are not connected inside the main body.

[0011] In some embodiments of the present invention, the second connecting structure also includes an annular wall, the annular wall of the second connecting structure surrounding a groove, the outer diameter of the first connecting structure being approximately the same as the inner diameter of the second connecting structure, and the first connecting structure being embedded in the groove surrounded by the second connecting structure.

[0012] In some embodiments of the present invention, the first base portion is further provided with a third channel and a fourth channel, one end of the third channel extending to the surface of the main body portion surrounded by the second annular protrusion, one end of the fourth channel extending to the surface of the main body portion located between the first annular protrusion and the second annular protrusion, and the other ends of the third channel and the fourth channel extending to the side of the main body portion.

[0013] In some embodiments of the present invention, the second base portion further includes a fifth channel, one end of which extends into the cavity and the other end of which extends into the surface of the second base portion outside the second connecting structure.

[0014] According to another aspect of the present invention, a shock absorber is provided, comprising a shock absorber base according to any of the above embodiments.

[0015] In some embodiments of the present invention, the shock absorber further includes a working cylinder comprising a first cylinder and a second cylinder, the inner diameter of the first cylinder being larger than the outer diameter of the second cylinder, the second cylinder being nested within the first cylinder; a piston located within the second cylinder; a piston rod, one end of which is connected to the piston and located within the second cylinder; the working cylinder comprising a first end and a second end opposite to each other in an axial direction; the piston rod being located on the side of the piston closer to the second end; and a mounting structure of the first base portion being connected to the first end of the working cylinder.

[0016] In some embodiments of the present invention, the mounting structure includes a first annular protrusion and a second annular protrusion, the first annular protrusion being located outside the second annular protrusion and spaced apart from each other, the other end of the first passage extending to the surface of the main body surrounded by the second annular protrusion, the other end of the second passage extending to the surface of the main body located between the first annular protrusion and the second annular protrusion, the first annular protrusion nesting with the first cylinder, and the second annular protrusion nesting with the second cylinder, such that the shock absorber base is mounted on the working cylinder.

[0017] In some embodiments of the present invention, the space within the second cylinder between the piston and the first end forms a first cavity, the space between the first cylinder and the second cylinder forms a second cavity, the space within the second cylinder on the side of the piston away from the first end forms a third cavity, and the side wall of the second cylinder includes a through hole connecting the second cavity and the third cavity.

[0018] In some embodiments of the present invention, the first passage is connected to the first cavity, and the second passage is connected to the second cavity.

[0019] In some embodiments of the present invention, the first base portion further includes a first solenoid valve mounting cylinder and a second solenoid valve mounting cylinder. The first solenoid valve mounting cylinder and the second solenoid valve mounting cylinder protrude outward from the side of the main body portion and are located between the first side and the second side. The first passage passes through the internal space of the first solenoid valve mounting cylinder, and the second passage passes through the internal space of the second solenoid valve mounting cylinder. The shock absorber further includes a first solenoid valve located in the first solenoid valve mounting cylinder and a second solenoid valve located in the second solenoid valve mounting cylinder. The first solenoid valve includes a first directional flow channel and a second directional flow channel. The first passage passes through the first directional flow channel and the second directional flow channel, thereby allowing fluid to flow from the first cavity through the first directional flow channel to the cavity or from the cavity through the second directional flow channel to the first cavity. The second solenoid valve includes a third directional flow channel and a fourth directional flow channel. The second passage passes through the third directional flow channel and the fourth directional flow channel, thereby allowing fluid to flow from the second cavity through the third directional flow channel to the cavity or from the cavity through the fourth directional flow channel to the second cavity.

[0020] In some embodiments of the present invention, the second base portion further includes a fifth channel, one end of which extends into the cavity and the other end of which extends into the side of the second base portion. The shock absorber further includes an energy accumulator connected to an opening of the fifth channel extending into the side of the second base portion.

[0021] In some embodiments of the present invention, the first base portion is further provided with a third channel and a fourth channel, the third channel being connected to the first cavity and the fourth channel being connected to the second cavity. The shock absorber further includes an oil port connector connected to the side of the first base portion, the oil port connector including a sixth channel and a seventh channel, the sixth channel being connected to the third channel and the seventh channel being connected to the fourth channel.

[0022] In some embodiments of the present invention, the shock absorber further includes a first pressure sensor and a second pressure sensor, which are respectively connected to the oil port connector and configured to detect the fluid pressure of the sixth channel and the seventh channel, respectively.

[0023] In some embodiments of the present invention, the shock absorber further includes a first switching valve and a second switching valve, the first switching valve and the second switching valve being configured to control the conduction and cutoff states of the sixth channel and the seventh channel, respectively. Attached Figure Description

[0024] Figure 1 This is a cross-sectional structural diagram of the shock absorber base according to an embodiment of the present utility model.

[0025] Figure 2 This is a schematic cross-sectional view of another shock absorber base according to an embodiment of the present utility model.

[0026] Figure 3 A perspective view of the first base portion of the shock absorber base according to an embodiment of the present invention is shown.

[0027] Figure 4 A cross-sectional structural schematic diagram of a shock absorber according to an embodiment of the present invention is shown.

[0028] Figure 5 A cross-sectional structural schematic diagram of another shock absorber according to an embodiment of the present invention is shown.

[0029] Figure 6 This is a front view of the oil port connector according to an embodiment of the present utility model.

[0030] Figure 7 This is a side view of the oil port connector according to an embodiment of the present utility model.

[0031] Figure 8 For the oil port connector according to the embodiment of this utility model, along Figure 7 A schematic diagram of the cross-sectional structure cut along the BB line.

[0032] Explanation of reference numerals in the attached drawings: 100 - First base portion; 200 - Second base portion; 110 - Main body portion; 111 - Mounting structure; 112 - First annular protrusion; 113 - Second annular protrusion; 120 - First connecting structure; 220 - Second connecting structure; 300 - Cavity; 131 - First passage; 132 - Second passage; 141 - First solenoid valve mounting cylinder; 142 - Second solenoid valve mounting cylinder; 133 - Third channel; 134 - Fourth channel; 235 - Fifth channel; 400 - Working cylinder; 410 - First cylinder; 420 - Second cylinder; 430 - Piston; 431 - Piston rod; 401 - First end; 402 - Second end; 441 - First cavity; 442 - Second chamber; 443 - Third chamber; 444 - Through hole; 510 - First solenoid valve; 520 - Second solenoid valve; 511 - First directional flow channel; 512 - Second directional flow channel; 523 - Third directional flow channel; 524 - Fourth directional flow channel; 600 - Accumulator; 700 - Oil port assembly; 710 - Sixth channel; 720 - Seventh channel; 711 - First inlet / outlet; 721 - Second inlet / outlet; 730 - First switch valve mounting hole; 740 - Second switch valve mounting hole; 731 - First switch valve; 741 - First switch valve; 740 - First pressure sensor; 750 - Second pressure sensor; 760 - First mounting hole; 770 - Second mounting hole. Detailed Implementation

[0033] To more fully illustrate the technical concept and specific implementation of this utility model, the structure, operation process, and possible technical effects of this utility model will be described below with reference to the accompanying drawings and exemplary embodiments. The embodiments of this utility model involve improvements and innovations in several technical fields. The solutions provided based on these improvements are widely applicable in different scenarios and can be implemented independently or in combination with other technical solutions. This utility model is not limited to the specific embodiments described. In practical applications, those skilled in the art can make various appropriate adjustments without departing from the spirit of this utility model.

[0034] At least one embodiment of this utility model provides a shock absorber base. The shock absorber base includes a first base portion and a second base portion. The first base portion includes a main body and a mounting structure located on a first side in the axial direction of the first main body. The mounting structure is configured to connect to the working cylinder of the shock absorber. The first base portion also includes a first connecting structure located on a second side in the axial direction of the main body. The second base portion has a second connecting structure connected to the first base portion. When the first connecting structure of the first base portion and the second connecting structure of the second base portion are connected to each other, a cavity is formed between the first base portion and the second base portion. The first connecting structure includes an annular wall. The first base portion includes a first passage and a second passage, both extending to the surface of the main body portion surrounded by the first connecting structure. According to an embodiment of this utility model, the shock absorber base is divided into two parts, namely, a first base part and a second base part. A connection structure for connecting with other parts of the shock absorber (such as the working cylinder, also known as the hydraulic cylinder) and a passage for communicating with different chambers in the working cylinder are made on the first base part. Then, the first base part and the second base part are combined together to form a complete base. This method greatly simplifies the manufacturing process of the entire base and allows the production and design of the base to be platformized. It can also be fine-tuned according to different shock absorbers to significantly improve its applicability.

[0035] Furthermore, embodiments of the present invention also relate to improvements to other parts of the base and improvements to the shock absorber including the base. The shock absorber base and shock absorber according to embodiments of the present invention will be described in more detail below to make the technical solutions and advantages of the embodiments of the present invention clearer.

[0036] Figure 1 This is a cross-sectional structural diagram of the shock absorber base according to an embodiment of the present invention. For clarity, Figure 1 The image also shows a solenoid valve mounted on the shock absorber base. (For example...) Figure 1 As shown, the shock absorber base includes a first base portion 100 and a second base portion 200. For example, the first base portion 100 and the second base portion 200 are connected together to form an integral base structure. The integral base structure can be used for connection and installation with other parts of the shock absorber and for installation with fluid control components such as solenoid valve structures, and provides a channel for fluid flow between the fluid control components and the working cylinder of the shock absorber.

[0037] For example, the first base portion 100 includes a main body portion 110 and a mounting structure 111 located on a first side in the axial direction of the main body portion 100. The mounting structure 111 is configured to connect with the working cylinder (hydraulic cylinder) of the shock absorber. Specific examples of the connection will be described in more detail in the section on shock absorber structure below. For example, Figure 1 The vertical direction is the axial direction, and the mounting structure 111 is located on the upper side of the main body 110. The first base portion 100 also includes a second side located in the axial direction of the main body 110 (i.e., as shown in the image). Figure 1 The first connecting structure 120 is shown on the lower side. A second connecting structure 220, which connects to the first base portion 100, is provided on the second base portion 200. The first base portion 100 and the second base portion 200 can be manufactured separately and used together when mounted on a shock absorber. With the first connecting structure 120 of the first base portion 100 and the second connecting structure 220 of the second base portion 200 connected to each other, a cavity 300 is formed between the first base portion 100 and the second base portion 200. The first connecting structure 120 includes an annular wall. For example, the cavity 300 is surrounded by a portion of the bottom surface of the main body 110 of the first base portion 100 surrounded by the first connecting structure 120, the annular wall of the first connecting structure 120, and a portion of the top surface of the second base portion 200. However, embodiments according to this disclosure are not limited thereto; the surrounding surface of the cavity 300 can also be formed by other surfaces or combinations of surfaces. The first base portion 100 includes a first passage 131 and a second passage 132, both of which extend to the surface of the main body portion 110 surrounded by the first connecting structure 120. Figure 1As shown, the first passage 131 and the second passage 132 are located in the main body 110, connecting different surfaces of the main body. The main body of the first base portion 100, or the main body together with some other components, can be formed by die casting, while the through holes in the first base portion 100 need to be formed by machining the die-cast components. Since the first passage and the second passage connect to the surfaces of the main body, for example, the first passage 131 and the second passage 132 extend to the surface of the main body surrounded by the first connecting structure 120, the machining of the first passage and the second passage is relatively easy. Furthermore, since the first passage 131 and the second passage 132 extend to the surface of the main body surrounded by the first connecting structure 120, the device can connect to the cavity 300, and can further connect to other components through the cavity 300. Based on this, in conjunction with the cavity formed between the first base portion and the second base portion, various passages or combinations of passages required for the shock absorber base portion can be integrally formed, through which fluid flow channels for conducting the working cylinder and fluid control components of the shock absorber are formed. Furthermore, since the channels within the base are easy to form and are equipped with mounting structures for connecting to the working cylinder, the design and manufacture of the base can be easily platformized, requiring only changes or additions / reductions to the channels for different shock absorbers.

[0038] In an embodiment of the present invention, the mounting structure 111 includes a first annular protrusion 112 and a second annular protrusion 113, wherein the first annular protrusion 112 is located outside the second annular protrusion 113 and spaced apart from it. For example, in a top view, the first annular protrusion 112 forms an outer ring, and the second annular protrusion 113 forms an inner ring, with a certain gap between the outer ring and the inner ring. For example, the mounting structure 111 is connected to the working cylinder of the shock absorber. For example, the first annular protrusion 112 and the second annular protrusion 113 are respectively connected to different cylinder structures in the working cylinder. Because the mounting structure adopts a structure such as the first annular protrusion and the second annular protrusion, it can be easily connected to the working cylinder of the shock absorber, and different base structures can be adapted on the working cylinder to realize shock absorbers with different functions or effects.

[0039] For example, such as Figure 1 As shown, one end of the first passage 131 extends to the surface of the main body 110 surrounded by the second annular protrusion 113 (i.e., the inner ring), and one end of the second passage 132 extends to the surface of the main body 110 located between the first annular protrusion 112 and the second annular protrusion 113. Since the first passage and the second passage are located at different positions on the first annular protrusion and the second annular protrusion, respectively, after the shock absorber base is installed on the working cylinder, the first passage and the second passage can be connected to different chambers within the working cylinders of different shock absorbers.

[0040] In some examples, the first base portion 100 also includes a first solenoid valve mounting sleeve 141 and a second solenoid valve mounting sleeve 142. The first solenoid valve mounting sleeve 141 and the second solenoid valve mounting sleeve 142 protrude outward from the side of the main body portion 110 and are located on the first side. Figure 1 (upper side) and second side ( Figure 1 Between the lower side of the middle. The first passage 131 passes through the internal space of the first solenoid valve mounting cylinder 141 in the middle, and the second passage 132 passes through the internal space of the second solenoid valve mounting cylinder 142 in the middle. For example, in a semi-active suspension, the damping of the fluid can be controlled by components such as solenoid valves to adjust the performance of the semi-active suspension. In the embodiment according to the present invention, the first solenoid valve mounting cylinder and the second solenoid valve mounting cylinder are provided for the installation of the solenoid valve structure. For clarity of illustration, Figure 1 The diagram also shows the structure of the solenoid valve installed on the first base portion. By setting the middle of the first passage 131 to pass through the internal space of the first solenoid valve mounting cylinder 141, and setting the middle of the second passage 132 to pass through the internal space of the second solenoid valve mounting cylinder 142, the first passage and the second passage can be controlled by solenoid valves installed in the first solenoid valve mounting cylinder and the second solenoid valve mounting cylinder, respectively.

[0041] For example, the first passage 131 and the second passage 132 are not connected inside the main body 110. Since the first passage and the second passage are passages connecting different cavities or fluid control components of the shock absorber, the first passage and the second passage are separated from each other and not connected, thereby avoiding interference between the control of different flow paths by the shock absorber.

[0042] like Figure 1 As shown, in some examples according to this utility model, the second connecting structure 220 of the second base portion 200 also includes an annular wall surrounding a groove. The outer diameter of the first connecting structure 120 is approximately the same as the inner diameter of the second connecting structure 220, and the first connecting structure 120 is embedded in the groove surrounded by the second connecting structure 220. While the first connecting structure 120 and the second connecting structure 220 are connected to each other, the aforementioned cavity 300 is formed between the first base portion and the second base portion. For example, the first base portion and the second base portion are welded to each other. For example, welding can be performed at the location where the first connecting portion and the second connecting portion contact each other.

[0043] For example, after the cavity 300 is formed, the first passage and the second passage can be connected to each other through the cavity, thereby connecting different flow paths of the entire base structure or connecting with other components, without the need for a complex internal passage preparation process.

[0044] like Figure 1 As shown, in some examples, the second base portion 200 also includes a fifth channel 235, one end of which extends into the cavity 300, and the other end of which extends into the side of the second base portion 200. For example, Figure 1 The fifth channel 235 shown is L-shaped, but the embodiments of this utility model are not limited to this. For this type of channel, holes can be drilled on different surfaces of the second base portion. When the holes made from different surfaces meet, a channel connecting the different surfaces of the base portion is formed, thus simplifying the manufacturing process of the base portion. Similarly, the channels in the first base portion can also be formed using a similar process. Although Figure 1 One opening of the fifth channel is located on the side of the second base portion; however, embodiments of the present invention are not limited thereto, and it may also be located on any surface outside the second connecting structure. For example, the opening of the fifth channel 235 may be located on the bottom surface of the second base portion.

[0045] Figure 2 This is another structure of the shock absorber base according to an embodiment of the present invention. As shown in the figure, the shock absorber base also includes a first base portion 100 and a second base portion 200. The first base portion 100 also includes a mounting structure 111, and the first base portion 100 and the second base portion 200 also form a cavity 300. Figure 1 The parts that are identical in structure will not be described again here; for the identical parts, please refer to the description above.

[0046] like Figure 2 As shown, a third channel 133 and a fourth channel 134 are provided in the first base portion 100. One end of the third channel 133 extends to the surface of the main body portion surrounded by the second annular protrusion 113, and one end of the fourth channel 134 extends to the surface of the main body portion located between the first annular protrusion 112 and the second annular protrusion 113. The other ends of the third channel 133 and the fourth channel 134 extend to the side of the main body portion 110. Figure 1 The structure shown is similar. The positions of the third and fourth channels, along with the first and second annular protrusions, allow them to be connected to different chambers of the shock absorber, thereby enabling controlled fluid flow through different pathways.

[0047] For example, the openings on the sides of the main body 110 of the third channel 133 and the fourth channel 134 can be connected to an external hydraulic pump, which injects or absorbs fluid to control the fluid within the shock absorber. These openings can be connected to the hydraulic pump via tubular components, and port structures can be provided between the tubular components and these openings to facilitate connection and enable other additional functions. The third and fourth channels can be used to connect to the hydraulic pump for active fluid control, thus enabling applications in active suspension systems. The separate design of the first and second base portions, as well as the design of the third and fourth channels, can also be referenced above. Figure 1 The technical advantages of the described embodiments will not be elaborated here.

[0048] In addition, for Figure 2 In the example shown, in some variations, the second base portion 200 may also be provided with, as shown in the example. Figure 1 The fifth channel 235 is shown. For example, the fifth channel 235 can be used to connect to an energy storage device.

[0049] It should be noted that the above are respectively for Figure 1 and Figure 2 It was described, and will Figure 1 and Figure 2 The structures shown are embodiments of different shock absorber bases. However, Figure 1 and Figure 2 The structure shown can also be a cross-section of the same shock absorber base at different locations. That is, a first channel, a second channel, a third channel, a fourth channel, and a fifth channel can be included in the same shock absorber base. For example, the fluid control components in a shock absorber can include either a solenoid valve or a hydraulic pump. In this case, the first, second, third, and fourth channels can be connected to different fluid control components, but can all be used together with the fifth channel, using the same accumulator.

[0050] Furthermore, it should be noted that the serial numbers in the above-mentioned first, second, third, fourth, and fifth channels are only used to distinguish different channels. For example, the third and fourth channels can also be referred to as the first and second channels.

[0051] To make the structure of the shock absorber base according to the embodiments of this utility model clearer Figure 3 A perspective view of a first base portion of a shock absorber base according to an embodiment of the present invention is shown. This perspective view includes portions corresponding to... Figure 1 and Figure 2 This refers to different cross-sections of the same shock absorber base, specifically including the first to fourth channels.

[0052] like Figure 3 As shown, the first annular protrusion 112 and the second annular protrusion 113 on the main body of the first base portion protrude from the main body portion. Figure 3 The image also shows a first channel 131 and a third channel 133 extending to the surface of the main body portion surrounded by the second annular protrusion 113. Since both the first and third channels are for connecting to the same chamber described later, this opening of the first channel 131 and the third channel 133 can be merged. Furthermore, Figure 3 The image also shows a second channel 132 and a fourth channel 134 located between the first annular protrusion 112 and the second annular protrusion 113. The opening of the second channel 132 on the surface between the first annular protrusion 112 and the second annular protrusion 113 is close to the second solenoid valve mounting cylinder 142, thereby allowing the second channel 132 to communicate with the flow path of the solenoid valve installed in the second solenoid valve mounting cylinder. Furthermore, the opening of the fourth channel 134 on this surface is substantially opposite to the opening of the second channel 132, an arrangement that allows the position of the solenoid valve mounting cylinder to be offset from its connection to the subsequent pump.

[0053] According to an embodiment of the present invention, a shock absorber is also provided. The shock absorber includes a shock absorber base according to any of the above embodiments.

[0054] Figure 4 A shock absorber according to an embodiment of the present invention is shown. For example... Figure 4 As shown, it includes a shock absorber base and a working cylinder. The shock absorber base can be based on... Figure 1 The shock absorber base is shown here. Therefore, the structure of the shock absorber base will not be described in detail here. The relevant connection structure will only be described when describing the process of connecting the shock absorber base with other components of the shock absorber.

[0055] like Figure 4 As shown, the shock absorber includes a working cylinder 400. The working cylinder 400 includes a first cylinder 410 and a second cylinder 420. The inner diameter of the first cylinder 410 is larger than the outer diameter of the second cylinder 420. The second cylinder 420 is nested within the first cylinder 410. The shock absorber also includes a piston 430 located within the second cylinder 420. The shock absorber also includes a piston rod 431, one end of which is connected to the piston 430 and located within the second cylinder 420. The working cylinder 420 includes a first end 401 and a second end 402 that are axially opposed to each other, with the piston rod 431 located on the side of the piston 430 near the second end 402. The mounting structure of the first base portion of the shock absorber base described above is connected to the first end 401 of the working cylinder.

[0056] Combination Figure 1 and Figure 4The mounting structure 111 includes a first annular protrusion 112 and a second annular protrusion 113. The first annular protrusion 112 is located outside the second annular protrusion 113 and spaced apart from it. A first passage 131 extends to the surface of the main body 110 surrounded by the second annular protrusion 113, and a second passage 132 extends to the surface of the main body 110 located between the first annular protrusion 112 and the second annular protrusion 113. The first annular protrusion 112 is nested with the first cylinder 410, and the second annular protrusion 113 is nested with the second cylinder 420, so that the shock absorber base is mounted on the working cylinder 400. Figure 4 In the example shown, the first annular protrusion 112 is embedded inside the first cylinder 410, and the second annular protrusion is embedded inside the second cylinder 420. However, embodiments of the present invention are not limited to this; the first and second annular protrusions can be nested within the first and second cylinders, respectively. By nesting the first and second annular protrusions within the first and second cylinders, not only can the connection between the shock absorber base and the working cylinder be achieved, but also the corresponding connections between different passages and different parts within the working cylinder can be realized.

[0057] like Figure 4 As shown, the space within the second cylinder 420 between the piston 430 and the first end 402 forms a first cavity 441. The space between the first cylinder 410 and the second cylinder 420 forms a second cavity 442. The space within the second cylinder 420 located on the side of the piston 430 away from the first end 401 forms a third cavity 443. The side wall of the second cylinder 420 includes a through hole 444 connecting the second cavity 442 and the third cavity 443. For example, the space inside the inner cylinder (i.e., the second cylinder 420) is divided into two parts (the first cavity 441 and the third cavity 443) by the piston. The first cavity 441 and the third cavity 443 are the rodless cavity and the rod cavity, respectively, that is, the part of the cylinder where the piston is located where there is no piston rod and the part where there is a piston rod. As the piston moves up and down, the volumes of the first cavity and the third cavity change. For example, during the compression stroke, the volume of the first cavity decreases and the volume of the second cavity increases; during the recovery stroke, the volume of the first cavity increases and the volume of the second cavity decreases.

[0058] For example, combining Figure 1 and Figure 4 As can be seen, the first passage 131 is connected to the first cavity 441, and the second passage 132 is connected to the second cavity 442.

[0059] refer to Figure 1 and Figure 4 The first base portion 100 also includes a first solenoid valve mounting sleeve 141 and a second solenoid valve mounting sleeve 142. The first solenoid valve mounting sleeve 141 and the second solenoid valve mounting sleeve 142 protrude outwards from the side of the main body portion 110 and are located on the first side. Figure 1 (upper side) and second side ( Figure 1 Between the lower side of the first passage 131 and the second passage 132. The first passage 131 passes through the internal space of the first solenoid valve mounting cylinder 141, and the second passage 132 passes through the internal space of the second solenoid valve mounting cylinder 142. The shock absorber also includes a first solenoid valve 510 located in the first solenoid valve mounting cylinder 141 and a second solenoid valve 520 located in the second solenoid valve mounting cylinder 142. The first solenoid valve 510 includes a first directional flow channel 511 and a second directional flow channel 512. The first passage 131 passes through the first directional flow channel 511 and the second directional flow channel 512, so that fluid can flow from the first cavity 441 through the first directional flow channel 511 to the cavity 300 or from the cavity 300 through the second directional flow channel 512 to the first cavity 441. The second solenoid valve 520 includes a third-direction flow channel 523 and a fourth-direction flow channel 524. The second passage 132 passes through the third-direction flow channel 523 and the fourth-direction flow channel 524, thereby allowing fluid to flow from the second chamber 442 through the third-direction flow channel 523 to the cavity 300 or from the cavity 300 through the fourth-direction flow channel 524 to the second chamber 442.

[0060] As described above, the first channel 131 connects the first cavity 441 and the cavity 300. With the first solenoid valve 510 installed midway through the first channel 131, and since the first solenoid valve 510 includes unidirectional flow channels with different flow directions, the damping force of the fluid flowing between the first cavity and the cavity in different directions can be controlled by the first solenoid valve. Similarly, the second channel 132 connects the second cavity 442 and the cavity 300. With the second solenoid valve 520 installed midway through the second channel 132, and since the second solenoid valve 520 includes unidirectional flow channels with different flow directions, the damping force of the fluid flowing between the second cavity and the cavity in different directions can be controlled by the second solenoid valve.

[0061] refer to Figure 1 and Figure 4 According to an embodiment of the present invention, the second base portion of the shock absorber further includes a fifth channel 235, one end of which extends into the cavity 300, and the other end of which extends to a surface outside the second connecting structure of the second base portion (e.g., Figure 1 and Figure 4 (The side extending to the second base portion is shown). The shock absorber also includes an accumulator 600, which is connected to an opening in the fifth channel 235 extending to the surface of the second base portion. Fluid in the cavity can flow into or out of the accumulator through the fifth channel. Furthermore, fluid in the working cylinder can also communicate with the accumulator.

[0062] Figure 5 A cross-sectional structural schematic diagram of another shock absorber according to an embodiment of the present invention is shown. In this shock absorber structure, the following is employed: Figure 2The shock absorber base shown is connected to the working cylinder in the same way as... Figure 4 The connection method of the shock absorber base shown is similar, therefore, it will not be described again here. (Similar to...) Figure 4 The difference is that the third and fourth channels in the first base section are not connected to the flow path of the solenoid valve, but are connected to the pump (e.g., a hydraulic pump) respectively, so that the shock absorber can be used in an active suspension system.

[0063] In addition, although Figure 5 Not shown in the text Figure 5 The second base portion can also include a fifth channel, similarly. Figure 5 The shock absorber in the middle may also include an accumulator connected to the fifth channel, and... Figure 4 Similar to what is shown.

[0064] With the above Figure 1 and Figure 2 The relationship is similar. Figure 4 and Figure 5 These can be separate, independent shock absorbers. Of course, Figure 4 and Figure 5 The combination of these can also exist in the same shock absorber, and Figure 4 and Figure 5 These represent different cross-sections at different locations on the shock absorber. In other words, the shock absorber includes the first to fifth channels mentioned above, as well as the associated solenoid valves and pump (…). Figure 5 The structure is connected to the part shown in the rectangular frame in the image.

[0065] In addition, it should be noted that Figure 5 The diagram shows a pump and pipes connecting the pump and the shock absorber. However, the shock absorber according to the present invention may not include the pump and pipes. The pump and pipes may be additional components added when assembling an automotive suspension system using the shock absorber of the present invention.

[0066] Figure 5 The cross-sectional structural diagram shows the pump connected to the shock absorber via a pipe. However, according to an embodiment of the present invention, the connection between the pipe and the shock absorber can be located on any surface other than the second connection structure. The oil port connector is installed on the side of the first base portion, thereby facilitating connection with the pipe and enabling other functions.

[0067] Figure 6 This is a front view of the oil port connector according to an embodiment of the present utility model; Figure 7 This is a side view of the oil port connector according to an embodiment of the present utility model; Figure 8 For the oil port connector according to the embodiment of this utility model, along Figure 7 A sectional view cut along the BB line.

[0068] like Figures 6 to 8 As shown, the oil port connector 700 includes a sixth channel 710 and a seventh channel 720. When the oil port connector 700 is connected to the first base portion, the sixth channel 710 can communicate with the third channel 133, and the seventh channel 720 can communicate with the fourth channel 134. For example, from... Figure 6 In the main view, you can see the sixth channel 710 and the seventh channel 720. In fact, in... Figure 6 What you can see directly on this surface are the openings of the sixth channel 710 and the seventh channel 720, but from these two openings, you can see the part of the oil port connector exposed through these two openings.

[0069] Combination Figures 6 to 8 The first channel 710 and the second channel 720 each include a first inlet / outlet 711 and a second inlet / outlet 721 on the side of the oil port connector. That is, one end opening of the first channel 710 and the second channel 720 is located at... Figure 6 The front view shows the surface, while the openings at the other end are located on the side surfaces. Figure 7 Side view and Figure 8 The cross-sectional views all show the first entrance / exit 711 and the second entrance / exit 721. For example, the first entrance / exit 711 and the second entrance / exit 722 are respectively connected... Figure 5 The opening of the pipe fitting connected to the pump is shown.

[0070] Furthermore, the oil port connector according to an embodiment of the present invention may also include a first switch valve mounting hole 730 and a second switch valve mounting hole 740. For example... Figure 7 and Figure 8 As shown, the opening of the first switch valve mounting hole 730 and the fourth switch valve mounting hole 740 are located on the side opposite to the first inlet / outlet 711 and the second inlet / outlet 721. The other ends of the first switch valve mounting hole 730 and the second switch valve mounting hole 740 can extend to the sixth channel 710 and the seventh channel 720.

[0071] For example, the oil port connector according to an embodiment of the present invention may further include a first switch valve 731 and a second switch valve 741 respectively located in the first switch valve mounting hole 730 and the second switch valve mounting hole 740. By setting the first switch valve 731 and the second switch valve 741, the sixth and seventh channels can be closed and opened, that is, the opening and closing states of the sixth and seventh channels can be controlled, thereby facilitating the assembly and maintenance of the shock absorber.

[0072] For example, the oil port connector according to an embodiment of the present invention may further include a first pressure sensor 740 and a second pressure sensor 750, which are respectively connected to the oil port connector and configured to detect the fluid pressure in the sixth and seventh channels, respectively. For example, the sensing portions of the first pressure sensor 740 and the second pressure sensor 750 may extend into the sixth and seventh channels, respectively, to detect the fluid pressure therein. The first and second pressure sensors can monitor the pressure changes within the cylinder in real time in the active suspension system. These pressure signals help the suspension control system dynamically adjust the damping force of the shock absorber to cope with different road conditions and optimize the vehicle's comfort and handling performance. Furthermore, the oil port connector according to an embodiment of the present invention directly mounts the first and second pressure sensors, resulting in a more compact structure, greater convenience in assembling the active suspension system, and more reliable monitoring of the oil pressure.

[0073] like Figure 6 and Figure 7 As shown, the oil port connector 700 also includes a first mounting hole 760 and a second mounting hole 770 for securing the oil port connector to the shock absorber. For example, a fastener (e.g., a screw) can be used to secure the oil port connector to the shock absorber through the first mounting hole 760 and the second mounting hole 770, thereby allowing the sixth channel 710 and the seventh channel 720 to be securely connected to the third channel 133 and the fourth channel 134, respectively. Two first mounting holes and two second mounting holes are shown in the figure; however, the number and location of the first and second mounting holes are not particularly limited.

[0074] As described above, the shock absorber base according to this embodiment of the invention includes a first base portion and a second base portion, which facilitates the fabrication of various channels in each base portion. Furthermore, when the first and second base portions are combined, these channels can be integrated to achieve different shock absorber functions. This design not only simplifies the manufacturing process but also facilitates the platform-based manufacturing process of the base portion. By modifying part of the base structure, it can be adapted to different shock absorbers.

[0075] The following is a brief description of the fluid flow method in shock absorbers. For example... Figure 4As shown, during the compression stroke, the piston moves downwards, the volume of the first chamber decreases, and the fluid in the first chamber enters the empty chamber through the first channel and the first directional flow channel, and then enters the accumulator through the fifth channel. Additionally, some fluid enters the second chamber through the second channel and the fourth directional flow channel, and then enters the third chamber through the through-hole. The flow path during the compression stroke is shown by the solid arrow. During the recovery stroke, fluid enters the empty chamber from the accumulator, flows into the first chamber through the first passage and the second directional flow channel, and the fluid in the third chamber enters the second chamber through the through-hole. The fluid in the second chamber enters the empty chamber through the second channel and the third directional flow channel. The flow path during the recovery stroke is shown by the dashed arrow. By connecting the accumulator, energy can be stored and released, helping to adjust the suspension's responsiveness and comfort. Furthermore, the accumulator can also be an oil-gas separated accumulator, which stores hydraulic oil and gas separately, avoiding performance instability caused by oil-gas mixing and ensuring stable damping effect of the suspension system under different loads and driving conditions. In addition, the oil-gas separated design can also improve the efficiency and durability of the accumulator, reduce bubble formation, and improve shock absorption performance.

[0076] for Figure 5 The structure shown also illustrates the fluid flow patterns during the compression and recovery strokes, and... Figure 4 The difference lies in its fluid control, which is achieved through a pump, an external component. The flow of fluid within the various chambers of the working cylinder is controlled by... Figure 4 Similarly, I will not go into details here.

[0077] It should be noted that the specific embodiments of this utility model are provided only to illustrate the principles and technical features of the utility model, and do not constitute a limitation on the utility model. Those skilled in the art can make various modifications and improvements to the specific embodiments within the spirit and scope of this utility model. In particular, for different application scenarios and implementation requirements, the specific structure can be reasonably adjusted to adapt to actual needs without departing from the essential content of this utility model. Therefore, all equivalent substitutions or improvements made within the core idea of ​​this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A shock absorber base, characterized in that, The device includes a first base portion and a second base portion. The first base portion includes a main body and a mounting structure located on a first side in the axial direction of the main body. The mounting structure is configured to connect to the working cylinder of the shock absorber. The first base portion also includes a first connecting structure located on a second side in the axial direction of the main body. The second base portion has a second connecting structure that connects to the first base portion. When the first connecting structure of the first base portion and the second connecting structure of the second base portion are connected to each other, a cavity is formed between the first base portion and the second base portion. The first connecting structure includes an annular wall, and the first base portion includes a first passage and a second passage, with one end of the first passage and one end of the second passage extending to the surface of the main body portion surrounded by the first connecting structure.

2. The shock absorber base according to claim 1, characterized in that, The mounting structure includes a first annular protrusion and a second annular protrusion, wherein the first annular protrusion is located outside the second annular protrusion and spaced apart from it. The other end of the first passage extends to the surface of the main body surrounded by the second annular protrusion, and the other end of the second passage extends to the surface of the main body located between the first annular protrusion and the second annular protrusion.

3. The shock absorber base according to claim 2, characterized in that, The first base portion also includes a first solenoid valve mounting cylinder and a second solenoid valve mounting cylinder. The first solenoid valve mounting cylinder and the second solenoid valve mounting cylinder protrude outward from the side of the main body portion and are located between the first side and the second side. The first passage passes through the internal space of the first solenoid valve mounting cylinder in the middle, and the second passage passes through the internal space of the second solenoid valve mounting cylinder in the middle.

4. The shock absorber base according to any one of claims 1-3, characterized in that, The first passage and the second passage are not connected inside the main body.

5. The shock absorber base according to any one of claims 1-3, characterized in that, The second connecting structure also includes an annular wall, which surrounds a groove. The outer diameter of the first connecting structure is approximately the same as the inner diameter of the second connecting structure, and the first connecting structure is embedded in the groove surrounded by the second connecting structure.

6. The shock absorber base according to claim 2 or 3, characterized in that, The first base portion is also provided with a third channel and a fourth channel. One end of the third channel extends to the surface of the main body portion surrounded by the second annular protrusion, and one end of the fourth channel extends to the surface of the main body portion located between the first annular protrusion and the second annular protrusion. The other ends of the third channel and the fourth channel extend to the side of the main body portion.

7. The shock absorber base according to any one of claims 1-3, characterized in that, The second base portion also includes a fifth channel, one end of which extends into the cavity, and the other end of which extends into the surface of the second base portion outside the second connecting structure.

8. A shock absorber, comprising the shock absorber base according to claim 1.

9. The shock absorber according to claim 8, characterized in that, It also includes a working cylinder, which comprises a first cylinder and a second cylinder, wherein the inner diameter of the first cylinder is larger than the outer diameter of the second cylinder, and the second cylinder is nested inside the first cylinder; The piston is located inside the second cylinder. A piston rod, one end of which is connected to the piston and located inside the second cylinder. The working cylinder includes a first end and a second end that are opposite each other in the axial direction, and the piston rod is located on the side of the piston closer to the second end. The mounting structure of the first base portion is connected to the first end of the working cylinder.

10. The shock absorber according to claim 9, characterized in that, The mounting structure includes a first annular protrusion and a second annular protrusion. The first annular protrusion is located outside the second annular protrusion and spaced apart from it. The other end of the first passage extends to the surface of the main body surrounded by the second annular protrusion, and the other end of the second passage extends to the surface of the main body located between the first annular protrusion and the second annular protrusion. The first annular protrusion is nested with the first cylinder, and the second annular protrusion is nested with the second cylinder, so that the shock absorber base is mounted on the working cylinder.

11. The shock absorber according to claim 9 or 10, characterized in that, The space within the second cylinder between the piston and the first end forms a first cavity, the space between the first cylinder and the second cylinder forms a second cavity, and the space within the second cylinder on the side of the piston away from the first end forms a third cavity. The side wall of the second cylinder includes a through hole connecting the second cavity and the third cavity.

12. The shock absorber according to claim 11, characterized in that, The first passage is connected to the first cavity, and the second passage is connected to the second cavity.

13. The shock absorber according to claim 12, characterized in that, The first base portion further includes a first solenoid valve mounting cylinder and a second solenoid valve mounting cylinder. The first solenoid valve mounting cylinder and the second solenoid valve mounting cylinder protrude outward from the side of the main body portion and are located between the first side and the second side. The first passage passes through the internal space of the first solenoid valve mounting cylinder, and the second passage passes through the internal space of the second solenoid valve mounting cylinder. The shock absorber also includes a first solenoid valve located inside the first solenoid valve mounting cylinder and a second solenoid valve located inside the second solenoid valve mounting cylinder. The first solenoid valve includes a first directional flow channel and a second directional flow channel. The first passage passes through the first directional flow channel and the second directional flow channel, thereby allowing fluid to flow from the first cavity through the first directional flow channel to the cavity, or from the cavity through the second directional flow channel to the first cavity. The second solenoid valve includes a third-direction flow channel and a fourth-direction flow channel. The second passage passes through the third-direction flow channel and the fourth-direction flow channel, thereby allowing fluid to flow from the second cavity through the third-direction flow channel to the cavity or from the cavity through the fourth-direction flow channel to the second cavity.

14. The shock absorber according to any one of claims 8-10, characterized in that, The second base portion also includes a fifth channel, one end of which extends into the cavity, and the other end of which extends into the side of the second base portion. The shock absorber also includes an energy accumulator connected to an opening in the fifth channel that extends to the side of the second base portion.

15. The shock absorber according to claim 11, characterized in that, The first base portion also includes a third channel and a fourth channel, wherein the third channel communicates with the first cavity and the fourth channel communicates with the second cavity. The shock absorber also includes an oil port connector connected to the side of the first base portion. The oil port connector includes a sixth channel and a seventh channel. The sixth channel communicates with the third channel, and the seventh channel communicates with the fourth channel.

16. The shock absorber according to claim 15, characterized in that, The shock absorber also includes a first pressure sensor and a second pressure sensor, which are respectively connected to the oil port connector and configured to detect the fluid pressure of the sixth channel and the seventh channel, respectively.

17. The shock absorber according to claim 15, characterized in that, The shock absorber also includes a first switching valve and a second switching valve, which are configured to control the on and off states of the sixth channel and the seventh channel, respectively.

Images