Double-electromagnetic-valve type semi-active electric control shock absorber

Abstract

The utility model provides a double electromagnetic valve type semi-active electric control shock absorber which comprises an oil storage cylinder and a working cylinder, the working cylinder is fixed in the oil storage cylinder in a sleeved mode, and a first oil storage cavity and a second oil storage cavity which are isolated from each other are formed between the working cylinder and the oil storage cylinder. The piston assembly is installed in the working cylinder, and the piston assembly divides the inner space of the working cylinder into a recovery cavity and a compression cavity which are isolated from each other; the auxiliary cylinder is installed on the outer side of the oil storage cylinder, a first oil hole and a second oil hole are formed in the bottom of the auxiliary cylinder, and the first oil hole and the second oil hole are connected with the first oil storage cavity and the second oil storage cavity respectively. According to the utility model, a recovery middle cavity and a lower working cavity in the existing product are eliminated, so that the structure is more simplified. Only one valve system (recovery or compression) and electromagnetic valve working liquid flow in one direction in one stroke, the forming factor of damping force is single, and the robustness of the system is high.

Description

Technical Field

[0001] This utility model relates to the field of electronically controlled vibration dampers, and in particular to a dual-electromagnetic-valve semi-active electronically controlled vibration damper. Background Technology

[0002] Figure 1 This is a schematic diagram of the structure of a dual-solenoid valve semi-active electronically controlled vibration damper in the prior art.

[0003] like Figure 1 As shown, in the prior art, the structure of a dual-solenoid valve semi-active electronically controlled vibration damper includes three cylinders: an oil reservoir 10, an intermediate cylinder (i.e., including an upper intermediate cylinder 20 and a lower intermediate cylinder 21), and a working cylinder 30, as well as a piston rod 40 that can move up and down within the working cylinder 30. A piston valve is provided on the piston rod 40, which consists of a reset solenoid valve 51 and a flow valve 52. A bottom valve is provided at the bottom of the working cylinder 30, which consists of a compression valve 61 and a compensation valve 62. The reset chamber A and the oil reservoir B are connected via a reset solenoid valve 70, and the compression chamber C and the oil reservoir B are connected via a compression solenoid valve 80.

[0004] Figure 2 This is a schematic diagram of the recovery stroke of a dual-solenoid valve semi-active electronically controlled vibration damper in the prior art.

[0005] like Figure 2 As shown, the recovery stroke of the dual-solenoid valve semi-active electronically controlled shock absorber works as follows: the piston rod 40 moves upward (to the left in the diagram), at which point the recovery chamber A is a high-pressure chamber. Part of the damping fluid flows from the recovery chamber A into the compression chamber C through the recovery solenoid valve 51. The recovery chamber A has an additional volume of piston rod 40 compared to the compression chamber C, and some liquid in the oil reservoir B pushes open the compensation valve 62 to flow into the compression chamber C.

[0006] Simultaneously, some of the damping fluid in the recovery chamber A flows into the recovery intermediate chamber through the connecting hole between recovery chamber A and recovery intermediate chamber. Since the recovery chamber and recovery intermediate chamber are connected, the recovery intermediate chamber is a high-pressure chamber. The fluid flows from the recovery intermediate chamber to the oil storage chamber B through the one-way valve and recovery solenoid valve 51. By energizing the recovery solenoid valve 51, the fluid flow rate can be changed by altering the solenoid valve current, further changing the damping force to achieve adjustable recovery damping.

[0007] Figure 3 This is a schematic diagram of the compression stroke of a dual-solenoid valve semi-active electronically controlled vibration damper in the prior art.

[0008] like Figure 3As shown, the compression stroke of the dual-solenoid valve semi-active electronically controlled vibration damper operates as follows: The piston rod 40 moves downwards (to the right in the diagram). At this time, compression chamber C is a high-pressure chamber, and some liquid flows from compression chamber C to recovery chamber A through the flow valve. Simultaneously, the recovery chamber A, which has a volume equal to the piston rod of compression chamber C, receives some damping fluid flowing from compression chamber C to oil reservoir B through compression valve 61. Another portion of damping fluid flows into the intermediate compression chamber through the connecting hole between compression chamber C and the intermediate compression chamber. Since compression chamber C and the intermediate compression chamber are connected, the intermediate compression chamber is a high-pressure chamber.

[0009] Liquid flows from the compression intermediate chamber into the oil storage chamber through the compression solenoid valve. By energizing the reset solenoid valve, the liquid flow rate can be changed by altering the solenoid valve current, further changing the damping force to achieve adjustable compression damping.

[0010] Therefore, it can be seen that the existing dual-electromagnetic semi-active electronically controlled vibration damper is developed based on the traditional passive vibration damper. Its structure and working principle retain many characteristics of the traditional vibration damper, while adding the function of solenoid valves, making its structure very complex. In particular, the valve system includes: a recovery valve 70, a compensation valve 62, a flow valve 52, a compression valve 61, a check valve 90, and a solenoid valve. In addition, there are many working chambers, including: a recovery chamber A, a compression chamber C, an oil reservoir B, a recovery intermediate chamber D, and a compression intermediate chamber E.

[0011] In view of this, the inventor of this utility model has designed a dual-electromagnetic-valve semi-active electronically controlled vibration damper in order to overcome the above-mentioned technical problems. Utility Model Content

[0012] The technical problem to be solved by this utility model is to overcome the defects of the existing dual electromagnetic semi-active electronically controlled vibration damper, which has a complex structure and uses many valve components, and to provide a dual electromagnetic valve type semi-active electronically controlled vibration damper.

[0013] The present invention solves the above-mentioned technical problems through the following technical solution:

[0014] A dual-electromagnetic-valve semi-active electrically controlled vibration damper, characterized in that the dual-electromagnetic-valve semi-active electrically controlled vibration damper comprises:

[0015] An oil reservoir and a working cylinder, wherein the working cylinder is sleeved and fixed inside the oil reservoir, and a first oil reservoir and a second oil reservoir are formed between the working cylinder and the oil reservoir and are mutually isolated.

[0016] A piston assembly is installed inside the working cylinder, and the piston assembly divides the space inside the working cylinder into a mutually isolated recovery chamber and a compression chamber;

[0017] An auxiliary cylinder is installed on the outside of the oil storage cylinder. The bottom of the auxiliary cylinder has a first oil hole and a second oil hole, which are respectively connected to the first oil storage chamber and the second oil storage chamber.

[0018] According to one embodiment of the present invention, the piston assembly includes a piston rod and a piston, one end of the piston rod being mounted in the working cylinder via the piston, such that the piston rod reciprocates within the working cylinder.

[0019] According to one embodiment of the present invention, the cavity formed between the piston rod, the piston, and the working cylinder is the recovery cavity, and the cavity formed between the piston and the working cylinder is the compression cavity.

[0020] According to one embodiment of the present invention, the working cylinder is provided with a first connecting hole and a second connecting hole, the recovery chamber and the first oil storage chamber are connected through the first connecting hole, and the compression chamber and the second oil storage chamber are connected through the second connecting hole.

[0021] According to one embodiment of the present invention, the auxiliary cylinder is provided with a compression solenoid valve, a recovery solenoid valve and a valve seat. The compression solenoid valve and the recovery solenoid valve are respectively installed on both sides of the valve seat. The first oil hole is located below the compression solenoid valve and the second oil hole is located below the recovery solenoid valve.

[0022] According to one embodiment of the present invention, the auxiliary cylinder includes a cylinder body, and the compression solenoid valve, the recovery solenoid valve and the valve seat are installed in the cylinder body.

[0023] According to one embodiment of the present invention, the auxiliary cylinder further includes a compression valve and a recovery valve, wherein the compression valve is installed between the valve seat and the compression solenoid valve, and the recovery valve is installed between the valve seat and the recovery solenoid valve.

[0024] According to one embodiment of the present invention, the dual solenoid valve semi-active electronically controlled vibration damper further includes a guide, which is installed between the outlet end of the working cylinder and the piston rod.

[0025] According to one embodiment of the present invention, an oil seal is provided between the outlet end of the oil storage cylinder and the piston rod.

[0026] The positive and progressive effects of this utility model are as follows:

[0027] This utility model of a dual-electromagnetic valve type semi-active electrically controlled vibration damper has the following advantages:

[0028] First, the number of working chambers has been optimized from 5 to 3, eliminating the restoration intermediate chamber and lower working chamber in the existing product, thus simplifying the structure.

[0029] Second, the valve system has been greatly optimized, reducing the six valves in the existing structure—recovery valve, compensation valve, flow valve, compression valve, check valve, and solenoid valve—to three valves: recovery valve, compression valve, and solenoid valve.

[0030] Third, the liquid flow direction is simpler. There is only one valve system (restoration or compression) and solenoid valve working in one stroke. The working liquid flows in one direction, the damping force is formed by a single factor, and the system has high robustness. Attached Figure Description

[0031] The above and other features, properties and advantages of this utility model will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features, wherein:

[0032] Figure 1 This is a schematic diagram of the structure of a dual-solenoid valve semi-active electronically controlled vibration damper in the prior art.

[0033] Figure 2 This is a schematic diagram of the recovery stroke of a dual-solenoid valve semi-active electronically controlled vibration damper in the prior art.

[0034] Figure 3 This is a schematic diagram of the compression stroke of a dual-solenoid valve semi-active electronically controlled vibration damper in the prior art.

[0035] Figure 4 This is a schematic diagram of the structure of the dual-electromagnetic-valve semi-active electronically controlled vibration damper of this utility model.

[0036] Figure 5 This is a schematic diagram of the auxiliary cylinder in the dual-electromagnetic valve semi-active electronically controlled vibration damper of this utility model.

[0037] Figure 6 This is a schematic diagram of the recovery stroke of the dual-electromagnetic valve semi-active electronically controlled vibration damper of this utility model.

[0038] Figure 7 This is a schematic diagram of the compression stroke of the dual-electromagnetic-valve semi-active electronically controlled vibration damper of this utility model. Detailed Implementation

[0039] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0040] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Preferred embodiments of the present invention will now be described in detail, examples of which are shown in the drawings. Wherever possible, the same reference numerals will be used in all the drawings to denote the same or similar parts.

[0041] Furthermore, although the terminology used in this invention is selected from commonly known and used terms, some terms mentioned in this specification may have been selected by the applicant in his or her judgment, and their detailed meanings are explained in the relevant sections of the description herein.

[0042] Furthermore, it is required that this utility model be understood not only through the actual terminology used, but also through the meaning implied by each term.

[0043] Figure 4 This is a schematic diagram of the structure of the dual-electromagnetic-valve semi-active electronically controlled vibration damper of this utility model.

[0044] like Figure 4 As shown, this utility model discloses a dual-electromagnetic-valve semi-active electrically controlled vibration damper, comprising: an oil reservoir 100, a working cylinder 200, a piston assembly, and an auxiliary cylinder 300. The working cylinder 200 is sleeved and fixed inside the oil reservoir 100, forming a first oil reservoir 400 and a second oil reservoir 500 that are mutually isolated between the working cylinder 200 and the oil reservoir 100. The piston assembly is installed inside the working cylinder 200, dividing the internal space of the working cylinder 200 into a mutually isolated recovery chamber 600 and a compression chamber 700. The auxiliary cylinder 300 is installed outside the oil reservoir 100, and its bottom has a first oil hole 310 and a second oil hole 320, which are connected to the first oil reservoir 400 and the second oil reservoir 500, respectively.

[0045] Preferably, the piston assembly includes a piston rod 800 and a piston 810. One end of the piston rod 800 is mounted in the working cylinder 200 via the piston 810, causing the piston rod 800 to reciprocate within the working cylinder 200. The cavity formed between the piston rod 800, the piston 810, and the working cylinder 200 is a recovery cavity 600, and the cavity formed between the piston 810 and the working cylinder 200 is a compression cavity 700.

[0046] The working cylinder 200 is also provided with a first connecting hole 210 and a second connecting hole 220. The restoration chamber 600 and the first oil storage chamber 400 are connected through the first connecting hole 210, and the compression chamber 700 and the second oil storage chamber 500 are connected through the second connecting hole 220.

[0047] Figure 5 This is a schematic diagram of the auxiliary cylinder in the dual-electromagnetic valve semi-active electronically controlled vibration damper of this utility model.

[0048] like Figure 5 As shown, the auxiliary cylinder 300 is equipped with a compression solenoid valve 330, a reset solenoid valve 340, and a valve seat 350. The compression solenoid valve 330 and the reset solenoid valve 340 are respectively mounted on both sides of the valve seat 350. The first oil hole 310 is located below the compression solenoid valve 330, and the second oil hole 320 is located below the reset solenoid valve 340. The auxiliary cylinder 300 includes a cylinder body 360, and the compression solenoid valve 330, the reset solenoid valve 340, and the valve seat 350 are mounted inside the cylinder body 360.

[0049] Preferably, the auxiliary cylinder 300 further includes a compression valve 370 and a recovery valve 380, with the compression valve 370 installed between the valve seat 350 and the compression solenoid valve 330, and the recovery valve 380 installed between the valve seat 350 and the recovery solenoid valve 340.

[0050] Here, the main function of the compression solenoid valve 330 is to adjust the damping force of the compression stroke by changing the solenoid valve current based on the actual road conditions and user preferences provided by the signal system. The function of the compression valve 370 is to limit the flow through it by the stiffness of the valve plate and the pressure difference of the damping fluid, thereby generating compression damping, and it also functions as a one-way valve.

[0051] The main function of the solenoid valve 340 is to adjust the solenoid valve current and the damping force of the recovery stroke based on information provided by the signal system according to actual road conditions and user preferences. The function of the recovery valve 380 is to limit the flow through it by the stiffness of the valve plate and the pressure difference of the damping fluid, thereby generating recovery damping. It also functions as a one-way valve.

[0052] Furthermore, the dual-solenoid valve semi-active electronically controlled vibration damper also includes a guide 900, which is installed between the outlet end of the working cylinder 200 and the piston rod 800. An oil seal 910 is provided between the outlet end of the oil reservoir 100 and the piston rod 800.

[0053] Figure 6 This is a schematic diagram of the recovery stroke of the dual-electromagnetic valve semi-active electronically controlled vibration damper of this utility model.

[0054] like Figure 6 As shown, the recovery stroke of the dual-electromagnetic valve semi-active electronically controlled vibration damper of this utility model is: the piston rod moves upward at 80° ( Figure 6(As shown in the diagram, moving to the left) The recovery chamber 600 is compressed, becoming a high-pressure chamber. The damping fluid in the recovery chamber 600 flows into the first oil reservoir 400 through the first connecting hole 210 between the recovery chamber 600 and the first oil reservoir 400. The high-pressure damping fluid pushes the recovery valve 380 into the recovery solenoid valve 340, further flowing into the second oil reservoir 500, and then into the compression chamber 700 through the second connecting hole 220 between the second oil reservoir 500 and the compression chamber 700. The throttling effect of the recovery valve 380 generates damping force, and simultaneously energizes the recovery solenoid valve 340. By changing the current of the solenoid valve, the fluid flow rate can be altered, further changing the damping force, thus achieving adjustable recovery damping.

[0055] Figure 7 This is a schematic diagram of the compression stroke of the dual-electromagnetic-valve semi-active electronically controlled vibration damper of this utility model.

[0056] like Figure 7 As shown, the compression stroke of the dual-electromagnetic valve semi-active electronically controlled vibration damper of this utility model is: the piston rod moves downward at 800° ( Figure 7 (As shown in the diagram, moving to the right) Compression chamber 700 is compressed, becoming a high-pressure chamber. Damping fluid in compression chamber 700 flows into the second oil reservoir 500 through the second connecting hole 220 between compression chamber 700 and the second oil reservoir 500. The high-pressure damping fluid pushes compression valve 370 into compression solenoid valve 330, further flowing into the first oil reservoir 400, and then into the recovery chamber 600 through the first connecting hole 210 between the first oil reservoir 400 and the recovery chamber 600. The throttling effect of compression valve 700 generates damping force, and simultaneously energizes the compression solenoid valve. By changing the current of the solenoid valve, the fluid flow rate can be altered, further changing the damping force, thus achieving adjustable compression damping.

[0057] Based on the above description, the basic valve system (piston valve and bottom valve) of this utility model dual-electromagnetic valve semi-active electronically controlled vibration damper no longer uses the basic valve system structure of the traditional passive vibration damper, and has been completely redesigned. Its improvement lies in:

[0058] 1. The cylinder layout is the same as that of a traditional shock absorber, with an oil reservoir and a working cylinder. The difference is that the upper and lower intermediate cylinders are eliminated outside the working cylinder. The bottom valve located at the bottom of the working cylinder is also eliminated.

[0059] Second, a piston assembly is installed inside the working cylinder, which includes a piston rod and a piston. The piston rod can move up and down within the working cylinder. The piston is mounted on the piston rod. Unlike traditional shock absorbers, this piston does not have a recovery valve and a flow valve. The piston divides the working cylinder into a completely isolated recovery chamber and a compression chamber.

[0060] 3. An auxiliary cylinder is installed on the outside of the oil reservoir. The outer part of the oil reservoir is a circular cylinder body, with a compression solenoid valve and a reset solenoid valve installed at both ends inside. A valve seat is installed in the middle, with a compression valve and a reset valve installed on both sides of the valve seat. Below the compression valve and the reset valve are a first oil hole and a second oil hole, which are connected to the first oil reservoir and the second oil reservoir, respectively.

[0061] This invention relates to a dual-electromagnetic-valve semi-active electrically controlled vibration damper, which solves the problems of complex structure, high manufacturing cost, and difficulty in quality control of existing dual-electromagnetic-valve semi-active electrically controlled vibration dampers. This invention features only one basic valve system (compression valve or reset valve) and corresponding solenoid valve operating per stroke, resulting in unidirectional liquid flow, a single factor in damping force formation, high system robustness, and low difficulty in quality control.

[0062] In summary, the present invention, a dual-electromagnetic-valve semi-active electrically controlled vibration damper, has the following advantages:

[0063] First, the number of working chambers has been optimized from 5 to 3, eliminating the restoration intermediate chamber and lower working chamber in the existing product, thus simplifying the structure.

[0064] Second, the valve system has been greatly optimized, reducing the six valves in the existing structure—recovery valve, compensation valve, flow valve, compression valve, check valve, and solenoid valve—to three valves: recovery valve, compression valve, and solenoid valve.

[0065] Third, the liquid flow direction is simpler. There is only one valve system (restoration or compression) and solenoid valve working in one stroke. The working liquid flows in one direction, the damping force is formed by a single factor, and the system has high robustness.

[0066] For those skilled in the art, the above disclosure of utility models is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0067] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0068] Similarly, it should be noted that, in order to simplify the description of the embodiments disclosed in this application and thus aid in the understanding of one or more embodiments of the utility model, the foregoing description of the embodiments of this application sometimes combines multiple features into one embodiment, drawing, or description thereof. However, this disclosure method does not mean that the object of this application requires more features than those mentioned in the claims. In fact, the embodiments have fewer features than all the features of the single embodiments disclosed above. Some embodiments use numbers describing the number of components or attributes; it should be understood that such numbers used in the description of embodiments are modified in some examples by the modifiers "approximately," "about," or "generally."

[0069] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A dual-electromagnetic-valve type semi-active electrically controlled vibration damper, characterized in that, The dual-electromagnetic valve type semi-active electronically controlled vibration damper includes: An oil reservoir and a working cylinder, wherein the working cylinder is sleeved and fixed inside the oil reservoir, and a first oil reservoir and a second oil reservoir are formed between the working cylinder and the oil reservoir and are mutually isolated. A piston assembly is installed inside the working cylinder, and the piston assembly divides the space inside the working cylinder into a mutually isolated recovery chamber and a compression chamber; An auxiliary cylinder is installed on the outside of the oil storage cylinder. The bottom of the auxiliary cylinder has a first oil hole and a second oil hole, which are respectively connected to the first oil storage chamber and the second oil storage chamber.

2. The dual-electromagnetic-valve semi-active electrically controlled vibration damper as described in claim 1, characterized in that, The piston assembly includes a piston rod and a piston, with one end of the piston rod mounted inside the working cylinder via the piston, causing the piston rod to reciprocate within the working cylinder.

3. The dual-electromagnetic-valve semi-active electrically controlled vibration damper as described in claim 2, characterized in that, The cavity formed between the piston rod, the piston, and the working cylinder is the recovery cavity, and the cavity formed between the piston and the working cylinder is the compression cavity.

4. The dual-electromagnetic-valve semi-active electrically controlled vibration damper as described in claim 3, characterized in that, The working cylinder is provided with a first connecting hole and a second connecting hole. The recovery chamber and the first oil storage chamber are connected through the first connecting hole, and the compression chamber and the second oil storage chamber are connected through the second connecting hole.

5. The dual-electromagnetic-valve semi-active electrically controlled vibration damper as described in claim 1, characterized in that, The auxiliary cylinder is equipped with a compression solenoid valve, a recovery solenoid valve, and a valve seat. The compression solenoid valve and the recovery solenoid valve are respectively installed on both sides of the valve seat. The first oil hole is located below the compression solenoid valve, and the second oil hole is located below the recovery solenoid valve.

6. The dual-electromagnetic-valve semi-active electrically controlled vibration damper as described in claim 5, characterized in that, The auxiliary cylinder includes a cylinder body, and the compression solenoid valve, the recovery solenoid valve, and the valve seat are installed in the cylinder body.

7. The dual-electromagnetic-valve semi-active electrically controlled vibration damper as described in claim 5, characterized in that, The auxiliary cylinder also includes a compression valve and a recovery valve. The compression valve is installed between the valve seat and the compression solenoid valve, and the recovery valve is installed between the valve seat and the recovery solenoid valve.

8. The dual-electromagnetic-valve semi-active electrically controlled vibration damper as described in claim 2, characterized in that, The dual-electromagnetic-valve semi-active electronically controlled vibration damper also includes a guide, which is installed between the outlet end of the working cylinder and the piston rod.

9. The dual-electromagnetic-valve semi-active electrically controlled vibration damper as described in claim 8, characterized in that, An oil seal is provided between the outlet end of the oil reservoir and the piston rod.

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