Electromagnetic valve for active hydraulic suspension double-valve damping-adjustable shock absorber

Abstract

The utility model relates to the field of electromagnetic valves for automobile shock absorbers, and discloses an electromagnetic valve for an active hydraulic suspension double-valve damping-adjustable shock absorber. Comprising a shock absorber body; the valve shells are arranged on the two sides of the shock absorber body, and transition blocks, valve blocks and electromagnetic valve bodies are sequentially arranged in the valve shells from inside to outside; at least two fluid channels on the transition block are respectively communicated with connecting ports on the shock absorber body, the valve block is provided with an inner cavity and a first cavity enclosed with the valve shell, one fluid channel is communicated with the inner cavity, and the inner cavity is communicated with the first cavity through a through hole on the valve block; a second cavity and a side cavity are formed between the valve block and the electromagnetic valve body, and a one-way valve is arranged on the valve block and used for communicating the inner cavity with the second cavity; when the shock absorber body works, the two fluid channels are communicated, or the two fluid channels are respectively communicated with the first cavity. Continuous damping adjustment and active adjustment of the shock absorber are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of solenoid valve for automobile shock absorber, concretely relates to a solenoid valve for active hydraulic suspension double valve damping adjustable shock absorber. BACKGROUND

[0002] In the vehicle suspension system, the shock absorber is one of the essential components, its main function is to suppress the vibration of the vehicle body through damping force, thereby improving the handling stability and ride comfort of the vehicle. The traditional shock absorber usually adopts hydraulic structure, and the damping force is generated by the flow of hydraulic oil between the piston and the cylinder. However, this structure of shock absorber has a significant limitation, that is, it cannot realize real-time adjustment of damping force. Due to the lack of active control elements such as solenoid valve, the traditional shock absorber can only provide fixed damping characteristics, and cannot be dynamically adjusted according to road conditions or driving needs, so it has limited performance in ride comfort.

[0003] At least one solenoid valve is installed outside the shock absorber, which can adjust the damping force to a certain extent, but its function is limited to single recovery or compression. This design limits the possibility of active adjustment of the shock absorber through different oil flow directions. In addition, the internal structure of the solenoid valve is relatively simple, which cannot meet the needs of active adjustment of the suspension vehicle body. Therefore, the design of the existing solenoid valve has obvious limitations in realizing active adjustment. SUMMARY

[0004] The utility model aims at providing a solenoid valve for active hydraulic suspension double valve damping adjustable shock absorber to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A solenoid valve for active hydraulic suspension double valve damping adjustable shock absorber, comprising:

[0007] A shock absorber body;

[0008] A valve housing is arranged on both sides of the shock absorber body, and the inside of the valve housing is sequentially provided with a transition block, a valve block and a solenoid valve body from inside to outside;

[0009] At least two fluid channels on the transition block are respectively communicated with the connecting ports on the shock absorber body, and the valve block has an inner cavity and a first cavity formed by the valve housing, wherein one of the fluid channels is communicated with the inner cavity, and the inner cavity is communicated with the first cavity through the through hole on the valve block;

[0010] A second cavity and a side cavity are formed between the valve block and the solenoid valve body. The valve block is provided with a one-way valve for connecting the inner cavity and the second cavity. When the damper body is working, the two fluid channels are connected, or the two fluid channels are respectively connected to the first cavity.

[0011] As a preferred embodiment of the present invention, the valve block includes: a cylindrical valve body and a side portion that annularly surrounds the valve body.

[0012] As a preferred embodiment of the present invention, the top of the valve body is formed with a protruding first flared end, and a support end is provided on the first flared end. The support end is provided with a plurality of channels arranged in a ring. The one-way valve is assembled on the support end and is used to open and close the communication path between the channels and the second cavity.

[0013] The bottom of the valve body has a raised second flared end, and an annular channel is formed between the second flared end and the side.

[0014] As a preferred embodiment of this utility model, the end face of the first flared end is fitted with the lower surface of the solenoid valve body to form the boundary of the second cavity;

[0015] The end face of the second flared end engages with the annular boss on the transition block to ensure that the two fluid channels on the transition block are separate and independent.

[0016] As a preferred embodiment of this utility model, the through hole extends from the inner cavity to the outer surface of the side portion and is composed of multiple holes.

[0017] As a preferred embodiment of the present invention, the side portion includes: a connecting block disposed on the outer surface of the valve body, the outer diameter of which is larger than the diameter of the valve body;

[0018] A baffle extends outward from the connecting block and forms the first cavity by enclosing the inner wall of the valve housing;

[0019] The connecting block has a plurality of first arc-shaped channels and / or second arc-shaped channels that are connected to the annular channel at intervals, wherein the arc length of the second arc-shaped channel is greater than the arc length of the first arc-shaped channel.

[0020] As a preferred embodiment of this utility model, two fluid channels with the same diameter as the connection port are provided on one end face of the transition block. The two fluid channels are respectively provided with a first branch channel and a second branch channel. The first branch channel is connected to the inner cavity, and the second branch channel is connected to the annular channel, the first arc-shaped channel and the second arc-shaped channel.

[0021] In a preferred embodiment of this utility model, the second arc-shaped channel is directly connected to the second branch channel, and the first arc-shaped channel is indirectly connected to the second branch channel through the annular channel.

[0022] As a preferred embodiment of this utility model, when the damper body is subjected to active force, the side cavity, the first arc-shaped channel, the second arc-shaped channel and a fluid channel have the same liquid pressure as the energy storage cavity in the damper body, which pushes open the connecting piece composed of a check valve plate and a restoring spring, so that one of the fluid channels is connected to the first cavity.

[0023] As a preferred embodiment of this utility model, the valve housings on both sides of the shock absorber body are connected to an electro-hydraulic pump via oil pipes to realize the liquid transmission of the main force of the shock absorber.

[0024] This utility model has the following beneficial effects: by setting up a multi-channel solenoid valve assembly, it realizes continuous damping adjustment of the automotive shock absorber, as well as controls the fluid flow direction of the shock absorber's recovery stroke, compression stroke and active force stroke, overcoming the limitations of the solenoid valve function, and realizing the solenoid valve to actively adjust the shock absorber and suspension body. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0026] Figure 1 This is a schematic diagram of the structure of the shock absorber body and solenoid valve assembly of this utility model.

[0027] Figure 2 This is a schematic diagram of the top structure of the transition block of this utility model.

[0028] Figure 3 This is a schematic diagram of the bottom structure of the transition block of this utility model.

[0029] Figure 4 This is a cross-sectional view of the transition block of this utility model.

[0030] Figure 5 This is a schematic diagram of the side outer surface structure of the valve block of this utility model.

[0031] Figure 6 This is a schematic diagram of the main structure of the valve block of this utility model.

[0032] Figure 7 This is a schematic diagram of the bottom structure of the valve block of this utility model.

[0033] Figure 8 This is a cross-sectional view of the valve block of this utility model.

[0034] Figure 9 This is a cross-sectional view of the valve block of this utility model from different angles.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. Shock absorber body; 11. Connecting port; 200. Solenoid valve assembly; 21. Valve shell; 22. Transition block; 221. Fluid passage; 221a. First branch passage; 221b. Second branch passage; 222. Annular boss; 23. Valve block; 231. Valve body; 2311. First flared end; 2312. Support end; 2313. Channel; 2314. Second flared end; 2315. Annular passage; 2316. Inner cavity; 232. Side; 2321. Connecting block; 2322. Baffle; 2323. First arc-shaped passage; 2324. Second arc-shaped passage; 233. Through hole; 234. First cavity; 24. Solenoid valve body; 241. Second cavity; 242. Side cavity; 300. Check valve; 400. Connecting component; 41. Check valve plate; 42. Returning spring. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] See Figure 1 As shown, this utility model provides a solenoid valve for an active hydraulic suspension dual-valve damping adjustable shock absorber, including: a shock absorber body 100, which adopts a double-layer cylinder structure, specifically a working cylinder and a liquid storage cylinder. The liquid path between the two cylinders is guided by the operation of an energy storage integrated connecting block and a solenoid valve assembly 200 connected thereto, and can be switched according to the corresponding mode. Specifically, the shock absorber body 100 is prior art, and its principle and structure will not be described in detail or shown in the accompanying drawings.

[0039] Solenoid valve assemblies 200 are provided on both sides of the damper body 100. Preferably, there are two solenoid valve assemblies 200, and their structures are symmetrical. However, their positions can be reasonably distributed according to actual needs, and there is no restriction here.

[0040] The solenoid valve assembly 200 includes a valve housing 21, a transition block 22, a valve block 23, and a solenoid valve body 24. The valve housing 21 is located on both sides of the damper body 100 and is connected to the damper body 100 by welding. The solenoid valve body 24 is connected to the valve housing 21 by threads or riveting with sealing devices. Inside the valve housing 21, the transition block 22, the valve block 23, and the solenoid valve body 24 are arranged sequentially from the inside to the outside.

[0041] Furthermore, at least two fluid channels 221 on the transition block 22 are respectively connected to two connection ports 11 on the damper body 100. One fluid channel 221 is connected to one connection port 11 to form the recovery chamber or compression chamber of the damper body 100, and the other fluid channel 221 is connected to the other connection port 11 to form the energy storage chamber of the damper body 100. Since the solenoid valve assembly 200 is symmetrically arranged, the symmetrical structural connection is similar and will not be described below.

[0042] In addition, the valve block 23 has an inner cavity 2316 and a first cavity 234 formed by the valve housing 21, wherein a fluid channel 221 communicates with the inner cavity 2316, and the inner cavity 2316 communicates with the first cavity 234 through a through hole 233 on the valve block 23.

[0043] A second cavity 241 and a side cavity 242 are formed between the valve block 23 and the solenoid valve body 24. A one-way valve 300 is provided on the valve block 23 to connect the inner cavity 2316 and the second cavity 241.

[0044] When the damper body 100 is working, the two fluid channels 221 are connected, or the two fluid channels 221 are respectively connected to the first cavity 234.

[0045] Specifically, when the shock absorber is compressing or recovering, liquid flows through a connection port 11 on the shock absorber into a fluid channel 221 on the transition block 22, and then into the inner cavity 2316 of the valve block 23. At this time, the liquid can flow into the first cavity 234 and into the second cavity 241 through the one-way valve 300. The second cavity 241 is opened by the control of the solenoid valve body 24, and different opening sizes are achieved by different current magnitudes, realizing the continuous damping adjustment of the shock absorber. The principle of the solenoid valve body 24 is existing technology, and its principle and structure will not be elaborated here. After the second cavity 241 is opened, the liquid flows into the side cavity 242 into another fluid channel 221 on the transition block 22. The liquid flows into the energy storage cavity in the shock absorber body 100 through another connection port 11. Then, the liquid in the energy storage cavity flows into the solenoid valve assembly 200 symmetrical to it, and then into the shock absorber body 100, realizing the compression or recovery stroke of the shock absorber.

[0046] When the shock absorber is adjusted for active force, liquid flows through a connection port 11 on the shock absorber into a fluid channel 221 on the transition block 22, and then into the inner cavity 2316 of the valve block 23. The liquid can flow into the first cavity 234. At this time, the liquid pressure in the side cavity 242, the first arc-shaped channel 2323, the second arc-shaped channel 2324, and the fluid channel 221 is equal to the pressure in the energy storage cavity of the shock absorber body 100. The liquid in the energy storage cavity flows through the fluid channel 221, through the aforementioned channels and the side cavity 242, pushing open the check valve plate 41 and the return spring 42. The connecting member 400 is formed, at this time, the side cavity 242 is connected to the first cavity 234, that is, another fluid channel 221 is connected to the first cavity 234. An electro-hydraulic pump (not shown in the figure) is connected between the valve housings 21 on both sides of the shock absorber body 100 through an oil pipe (not shown in the figure). The valve housing 21 is provided with a connection port 11 (not shown in the figure) for connecting to the oil pipe. The electro-hydraulic pump controls the oil in the first cavity 234 to be transferred to another solenoid valve assembly 200, and then flows into the shock absorber body 100, realizing the main power function of the shock absorber, so that the car wheels actively rise or fall. Based on this, liquid is added to the first cavity 234 to prevent reverse oil flow.

[0047] Therefore, through the multi-channel configuration of the internal structure of the solenoid valve assembly 200, continuous damping adjustment of the automotive shock absorber is achieved, as well as control of the fluid flow direction of the shock absorber's recovery stroke, compression stroke, and active force stroke. This overcomes the limitations of the solenoid valve function and enables the solenoid valve to actively adjust the shock absorber and suspension body.

[0048] See Figures 5 to 9 As shown, the valve block 23 includes a cylindrical valve body 231 and an annular side portion 232 surrounding the valve body 231. This makes the overall layout of the valve block 23 more compact, enabling it to perform multiple functions within a limited space. See also... Figure 8 and 9 As shown, a protruding first flared end 2311 is formed on the top of the valve body 231. The end face of the first flared end 2311 mates with the lower surface of the solenoid valve body 24 to form the boundary of the second cavity 241. The first flared end 2311, with its conical end face, forms a hard metal seal with the lower surface of the solenoid valve body 24, ensuring a tight fit between the components and reducing the risk of leakage.

[0049] A support end 2312 is provided on the first flared end 2311. The support end 2312 is provided with a plurality of channels 2313 arranged in a ring. The number of channels 2313 can be 4, 5 or 6, depending on the actual situation. The shape can also be arc, circle or other polygonal or arbitrary irregular shape. Each channel 2313 is evenly spaced, so that the liquid can pass through the one-way valve 300 evenly and avoid pressure fluctuations caused by local eddies. The one-way valve 300 is assembled on the support end 2312 and is used to open and close the communication path between the channel 2313 and the second cavity 241, so that the damping force adjustment response time is more accurate and the backflow of liquid is prevented.

[0050] The bottom of the valve body 231 has a raised second flared end 2314, and an annular channel 2315 is formed between the second flared end 2314 and the side portion 232. The annular channel 2315 allows for effective distribution and guidance of liquid within the valve block 23, optimizes the liquid flow path, reduces resistance during flow, improves liquid transmission efficiency, and provides support, thus reducing the weight of the valve body 231. The end face of the second flared end 2314 engages with the annular boss 222 on the transition block 22 to ensure that the two fluid channels 221 on the transition block 22 are separate and independent. The engagement between the second flared end 2314 and the annular boss 222 can be an interference fit, which also improves the sealing performance between components and prevents crossflow between the two fluid channels 221.

[0051] See Figure 5 and 9 As shown, through holes 233 extend from the inner cavity 2316 to the outer surface of the side portion 232, and are composed of multiple through holes. In this embodiment, the through holes 233 include a set of symmetrically distributed through holes and another set containing one through hole located between the symmetrically distributed through holes. The symmetrically distributed through holes 233 allow the liquid to enter the first cavity 234 uniformly from multiple directions, forming a counter-flow balance. This symmetrical layout can avoid local accumulation or poor flow of liquid when entering the cavity, thereby improving the speed and uniformity of liquid entering the cavity and eliminating the imbalance of hydraulic pressure. The individual through hole 233 optimizes the flow path of the liquid, and its position is preferably at a 45° position of the symmetrically distributed through holes 233, forming a Venturi acceleration effect with the symmetrical holes, allowing the liquid to enter the first cavity 234 more quickly, further increasing the flow rate of the liquid.

[0052] See Figure 6As shown, the side portion 232 includes a connecting block 2321, disposed on the outer surface of the valve body 231, with an outer diameter larger than that of the valve body 231. This allows it to better withstand external pressure and mechanical stress, thereby improving the structural stability of the entire valve block 23. A baffle 2322 extends outward from the connecting block 2321, forming a first cavity 234 by enclosing the inner wall of the valve shell 21. The baffle 2322 not only helps to form the cavity but also provides support and protection. This support prevents the connecting block 2321 from deforming or displacing under fluid pressure, thus ensuring the shape and dimensional stability of the first cavity 234.

[0053] The connecting block 2321 has multiple first arc-shaped channels 2323 that communicate with two first arc-shaped channels connected to the annular channel 2315, and a second arc-shaped channel and / or a second arc-shaped channel 2324 distributed at intervals. The arc length of the second arc-shaped channel 2324 is greater than that of the first arc-shaped channel 2323. The longer arc length of the second arc-shaped channel 2324 allows it to hold more fluid, thus providing the main fluid channel 221 when a larger flow rate is required. The two first arc-shaped channels 2323 can provide auxiliary channels when the flow rate is lower, or distribute fluid as needed to prevent oil deviation. Furthermore, the first arc-shaped channels can be included or excluded, depending on the actual requirements. This design allows fluid to flow through appropriate channels under different operating conditions, optimizing fluid distribution and flow path. It helps guide the fluid to flow smoothly, reduces turbulence within the channels, thereby reducing pressure loss and improving fluid transfer efficiency.

[0054] After the valve block 23 engages with the solenoid valve body 24, the liquid in the fluid channel 221 enters the first arc-shaped channel 2323 or the second arc-shaped channel 2324 through the annular channel 2315. After entering the two channels, it flows into the inlet cavity 242, which is the chamber formed by the valve block 23 and the solenoid valve body 24. Figure 1 The left and right side cavities 242, as shown in the diagram, are connected in a ring. Alternatively, without the first arc-shaped channel 2323, the liquid flows directly into the side cavity 242 through the second arc-shaped channel 2324. This design allows for more flexible handling of different operational needs; for example, only one channel can be used under certain conditions, while multiple channels can be used simultaneously under other conditions.

[0055] Each arc-shaped channel corresponds to a connecting member 400, and the flow is pushed open by the connecting member 400 through a relatively independent channel to enter the first cavity 234. When applying active force, the fluid flow rate can be increased by quickly opening the connecting member 400. At the same time, if one channel malfunctions, such as if the connecting member 400 is blocked or damaged, the other channels can still operate normally, thereby improving the overall reliability of the vibration damper.

[0056] See Figures 2 to 4 As shown, two fluid channels 221 with the same diameter as the connection port 11 are provided on one end face of the transition block 22. A first branch channel 221a and a second branch channel 221b are respectively provided on the two fluid channels 221. The first branch channel 221a communicates with the inner cavity 2316, and the second branch channel 221b communicates with the annular channel 2315, the first arc-shaped channel 2323, and the second arc-shaped channel 2324. Sealing structures, preferably sealing rings or gaskets, are provided at the connection points between the two fluid channels 221 and the connection port 11, as well as between the transition block 22 and the valve body 21, to prevent liquid leakage.

[0057] The second arc-shaped channel 2324 is directly connected to the second branch channel 221b, enabling rapid fluid transfer and suitable for applications requiring fast response. The first arc-shaped channel 2323 is indirectly connected to the second branch channel 221b via an annular channel 2315. This provides multiple fluid path options, allowing selection of the most suitable path based on different operating conditions and requirements. The annular channel 2315 can also be used for further fluid distribution and adjustment, enabling precise control.

[0058] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A solenoid valve for an active hydraulic suspension dual-valve damping adjustable shock absorber, characterized in that, include: Vibration damper body; The valve housings are located on both sides of the damper body. The valve housings contain, from the inside out, a transition block, a valve block, and a solenoid valve body. At least two fluid channels on the transition block are respectively connected to the connection port on the damper body. The valve block has an inner cavity and a first cavity formed by the valve shell. One of the fluid channels is connected to the inner cavity, and the inner cavity is connected to the first cavity through a through hole on the valve block. A second cavity and a side cavity are formed between the valve block and the solenoid valve body. The valve block is provided with a one-way valve for connecting the inner cavity and the second cavity. When the damper body is working, the two fluid channels are connected, or the two fluid channels are respectively connected to the first cavity.

2. The solenoid valve for the active hydraulic suspension dual-valve damping adjustable shock absorber according to claim 1, characterized in that: The valve block includes: a cylindrical valve body and a side portion that annularly surrounds the valve body.

3. The solenoid valve for the active hydraulic suspension dual-valve damping adjustable shock absorber according to claim 2, characterized in that: The valve body has a raised first flared end at the top, and a support end is provided on the first flared end. The support end is provided with a plurality of channels arranged in a ring. The one-way valve is assembled on the support end and is used to open and close the communication path between the channels and the second cavity. The bottom of the valve body has a raised second flared end, and an annular channel is formed between the second flared end and the side.

4. The solenoid valve for the active hydraulic suspension dual-valve damping adjustable shock absorber according to claim 3, characterized in that: The end face of the first flared end fits with the lower surface of the solenoid valve body to form the boundary of the second cavity; The end face of the second flared end engages with the annular boss on the transition block to ensure that the two fluid channels on the transition block are separate and independent.

5. The solenoid valve for the active hydraulic suspension dual-valve damping adjustable shock absorber according to claim 2, characterized in that: The through-hole extends from the inner cavity to the outer surface of the side portion and is composed of multiple holes.

6. The solenoid valve for the active hydraulic suspension dual-valve damping adjustable shock absorber according to claim 3, characterized in that: The side portion includes: a connecting block disposed on the outer surface of the valve body, the outer diameter of which is larger than the diameter of the valve body; A baffle extends outward from the connecting block and forms the first cavity by enclosing the inner wall of the valve housing; The connecting block has two or more first arc-shaped channels and / or one second arc-shaped channel that are connected to the annular channel at intervals, wherein the arc length of the second arc-shaped channel is greater than the arc length of the first arc-shaped channel.

7. The solenoid valve for the active hydraulic suspension dual-valve damping adjustable shock absorber according to claim 1, characterized in that: Two fluid channels with the same diameter as the connection port are provided on one end face of the transition block. The two fluid channels are respectively provided with a first branch channel and a second branch channel. The first branch channel is connected to the inner cavity, and the second branch channel is connected to the annular channel, the first arc-shaped channel and the second arc-shaped channel.

8. The solenoid valve for the active hydraulic suspension dual-valve damping adjustable shock absorber according to claim 7, characterized in that: The second arc-shaped channel is directly connected to the second branch channel, and the first arc-shaped channel is indirectly connected to the second branch channel through the annular channel.

9. The solenoid valve for an active hydraulic suspension dual-valve damping adjustable shock absorber according to claim 6, characterized in that: When the damper body is subjected to active force, the side cavity, the first arc-shaped channel, the second arc-shaped channel and a fluid channel have the same liquid pressure as the energy storage cavity in the damper body, which pushes open the connecting piece composed of a check valve plate and a restoring spring, so that one of the fluid channels is connected to the first cavity.

10. The solenoid valve for an active hydraulic suspension dual-valve damping adjustable shock absorber according to claim 1, characterized in that: An electro-hydraulic pump is connected between the valve housings on both sides of the shock absorber body via an oil pipe to realize the liquid transmission of the main force of the shock absorber.

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