An electronically controlled shock absorber with a communication hole guide, a bottom valve, and an electronically controlled shock absorber

Abstract

The utility model discloses a take the communicator of electric control shock absorber, bottom valve and electric control shock absorber, the guider is equipped with guider outer circumferential surface boss, first intermediate cylinder inner chamber boss, first working cylinder inner chamber boss, and the first working cylinder inner chamber boss mesa is seted up first inner hole, and the first intermediate cylinder inner chamber boss mesa is seted up first outer hole, and the first intermediate cylinder inner chamber boss side is seted up first connecting hole, and first connecting hole is connected first inner hole and first outer hole and constitutes first communicating hole. The bottom valve has the similar communicating hole design with the guider. The utility model sets up the communicating hole on the guider and bottom valve, can avoid the burr problem that sets up on the working cylinder brings burr scratch piston ring and O type sealing ring, leads to oil leakage, and the debris of piston ring and O type sealing ring can also make solenoid valve stagnation, leads to shock absorber failure. The utility model is same with prior art shock absorber total length, at least increases 20mm's stroke, and the platform development of more vehicle type adaptation.

Description

Technical Field

[0001] This utility model relates to the field of automotive shock absorber technology, specifically to an electronically controlled shock absorber with a guide with a connecting hole, a bottom valve, and an electronically controlled shock absorber using the guide and / or bottom valve. Background Technology

[0002] As a core component of the automotive suspension system, the electronically controlled shock absorber collects vehicle driving data (such as vehicle speed, body posture, and road bumpiness) in real time through sensors, and then the ECU (electronic control unit) precisely adjusts the damping coefficient. It can complete the mode switching from "soft and comfortable" to "firm handling" within milliseconds. Compared with traditional passive shock absorbers, it can more perfectly balance the contradiction between comfort and handling.

[0003] In conventional electronically controlled vibration dampers, holes are made in the working cylinder to allow oil flow. For example... Figure 8 As shown, in a conventional single external solenoid valve electrically controlled vibration damper, a vent hole 10 is formed by opening a hole in the cylinder wall of the damper's working cylinder. The vent hole 10 cooperates with the intermediate cylinder to form a flow channel to the solenoid valve. When the piston reciprocates within the working cylinder, it cannot pass through the hole. Therefore, a limiting ring seat 9 is designed on the piston rod to limit the stroke of the piston valve. Figure 9 As shown, in a conventional dual external solenoid valve electrically controlled vibration damper, drainage holes 10 are formed in the upper and lower parts of the cylinder wall of the damper's working cylinder. The drainage holes 10 cooperate with the corresponding intermediate cylinder to form a flow channel to the solenoid valve. To prevent the piston from passing through the drainage hole 10 in the upper part of the working cylinder during the recovery stroke, a limiting ring seat 9 is also designed to limit the piston valve's stroke. Although no limiting component is set for the compression stroke, the design of the drainage hole 10 in the lower part of the working cylinder also limits the damper's stroke, resulting in a shorter damper stroke.

[0004] The above-mentioned existing technology has the following technical problems: (1) Machining the drain hole 10 on the working cylinder is a complicated process. Whether it is drilling or punching, burrs or sharp edges will be formed on the inner surface of the working cylinder. During the assembly of the shock absorber, the piston rings and O-rings are easily scratched, resulting in leakage. The debris of the piston rings and O-rings may also cause the solenoid valve to stick, resulting in the failure of the shock absorber. (2) The oil flow hole on the working cylinder restricts the stroke of the shock absorber, resulting in a short stroke of the shock absorber that is difficult to adapt to the existing development platform. Utility Model Content

[0005] This invention provides an electronically controlled shock absorber with a guide with a connecting hole, a bottom valve, and an electronically controlled shock absorber using the guide with the connecting hole and / or the bottom valve, to overcome the aforementioned problems in the prior art. The technical solution of this invention eliminates the need to machine oil flow holes on the working cylinder of the electronically controlled shock absorber, thereby preventing burrs or sharpenings to the piston rings and O-rings during assembly. Furthermore, it allows the shock absorber to have a longer stroke while maintaining the same longitudinal dimensions, thus enabling it to adapt to a wider range of vehicle models.

[0006] The technical solution of this utility model for the guide is as follows:

[0007] An electronically controlled vibration damper has a guide with a connecting hole. The guide has a guide outer peripheral surface boss, a first intermediate cylinder inner cavity boss, and a first working cylinder inner cavity boss. A first inner hole is opened on the platform of the first working cylinder inner cavity boss, a first outer hole is opened on the platform of the first intermediate cylinder inner cavity boss, and a first connecting hole is opened on the side of the first intermediate cylinder inner cavity boss. The first connecting hole connects the first inner hole and the first outer hole to form a first connecting hole.

[0008] In existing technologies, the connecting hole between the working cylinder and the intermediate cylinder is generally located on the working cylinder. This often results in burrs or sharp edges at the opening, which are cumbersome and ineffective to remove. Improper burr removal on the inner surface of the connecting hole can scratch the piston rings and O-rings during shock absorber assembly, leading to leakage. Debris from the piston rings and O-rings can also cause the solenoid valve to jam, resulting in shock absorber failure. Furthermore, because the piston stroke cannot exceed the connecting hole on the working cylinder, the piston stroke is reduced. Compared with existing technologies, this invention eliminates the connecting hole on the working cylinder and instead provides a corresponding connecting hole on the guide, avoiding the burr problem and the short piston rod stroke problem of existing technologies, and can be adapted to the platform development of more vehicle models.

[0009] As an optimization, in the aforementioned electronically controlled vibration damper with a guide with connecting holes, multiple sets of the first inner hole, the first outer hole, and the first connecting hole are provided. In this embodiment of the invention, eight sets are provided, which can achieve more uniform oil flow between the inner cavity of the working cylinder and the inner cavity of the intermediate cylinder.

[0010] For vibration dampers, this utility model provides a single external solenoid valve electrically controlled vibration damper.

[0011] A single external solenoid valve electrically controlled vibration damper includes a piston rod, a piston, a working cylinder, an intermediate cylinder, a reservoir, a second bottom valve, and a solenoid valve. The damper also includes the aforementioned guide with a connecting hole. The second bottom valve and the guide are respectively located at both ends of the working cylinder. One end of the working cylinder is interference-fitted with a boss inside the first working cylinder, and the end face of the working cylinder is in contact with the end face of a boss inside the first intermediate cylinder. One end of the intermediate cylinder is interference-fitted with a boss inside the first intermediate cylinder, and the end face of the intermediate cylinder is in contact with the end face of a boss on the outer circumference of the guide. The first inner hole communicates with the inner cavity of the working cylinder, and the first outer hole communicates with the inner cavity of the intermediate cylinder. This single external solenoid valve electrically controlled vibration damper avoids the need for a drain hole on the working cylinder by using a guide with a connecting hole.

[0012] Preferably, in the aforementioned single external solenoid valve electrically controlled vibration damper, the outer peripheral boss of the guide is interference-fitted with the liquid storage cylinder, and the guide is limited by the flange structure at the end of the liquid storage cylinder. This assembly structure is highly reliable and easy to implement.

[0013] Preferably, in the aforementioned single external solenoid valve electrically controlled vibration damper, the working cylinder is a straight-tube type. The straight-tube structure can reduce the manufacturing difficulty and cost of the working cylinder.

[0014] For the bottom valve, the technical solution of this utility model is as follows:

[0015] The electronically controlled vibration damper includes a bottom valve with a connecting hole. This bottom valve is a first bottom valve. The valve seat of the first bottom valve has a boss on its outer circumferential surface, a boss inside the second intermediate cylinder, and a boss inside the second working cylinder. A second inner hole is formed on the surface of the boss inside the second working cylinder, and a second outer hole is formed on the surface of the boss inside the second intermediate cylinder. A second connecting hole is formed on the side of the boss inside the second intermediate cylinder. The second connecting hole connects the second inner hole and the second outer hole to form a second connecting hole. Therefore, applying the bottom valve with the connecting hole to a dual external solenoid valve electronically controlled vibration damper avoids the need for a drain hole at the bottom of the working cylinder.

[0016] Preferably, in the aforementioned bottom valve with connecting holes, multiple sets of the second inner hole, the second outer hole, and the second connecting hole are provided. In this embodiment of the invention, eight sets are provided, which can achieve more uniform oil flow between the inner cavity of the working cylinder and the inner cavity of the intermediate cylinder.

[0017] Regarding vibration dampers, this utility model also provides a dual external solenoid valve electrically controlled vibration damper, the technical solution of which is as follows:

[0018] A dual external solenoid valve electrically controlled vibration damper includes a piston rod, a piston, a working cylinder, a first intermediate cylinder, a second intermediate cylinder, a liquid reservoir, a first solenoid valve, and a second solenoid valve. The damper also includes the aforementioned guide with a connecting hole and the aforementioned bottom valve with a connecting hole. The first bottom valve and the guide are respectively located at both ends of the working cylinder. One end of the working cylinder is interference-fitted with a boss inside the first working cylinder, and the end face of the working cylinder is in contact with the end face of the boss inside the first intermediate cylinder. One end of the first intermediate cylinder is interference-fitted with a boss inside the first intermediate cylinder. The first intermediate cylinder end face is fitted with the guide's outer peripheral boss end face; the first inner hole connects to the working cylinder's inner cavity, and the first outer hole connects to the first intermediate cylinder's inner cavity; one end of the second intermediate cylinder is interference-fitted with the second intermediate cylinder's inner cavity boss, and the second intermediate cylinder end face is fitted with the bottom valve's outer peripheral boss end face; one end of the working cylinder is interference-fitted with the second working cylinder's inner cavity boss, and the working cylinder end face is fitted with the second intermediate cylinder's inner cavity boss end face; the second inner hole connects to the working cylinder's inner cavity, and the second outer hole connects to the second intermediate cylinder's inner cavity. In this utility model's dual external solenoid valve electrically controlled vibration damper, by employing a guide with a connecting hole and a bottom valve with a connecting hole, the oil drain hole on the working cylinder is avoided.

[0019] Preferably, in the aforementioned dual external solenoid valve electrically controlled vibration damper, the outer peripheral surface boss of the guide is interference-fitted with the liquid storage cylinder, and the guide is limited by the flange structure at the end of the liquid storage cylinder.

[0020] Preferably, in the aforementioned dual external solenoid valve electrically controlled vibration damper, the working cylinder is a straight-tube type. The straight-tube structure can reduce the manufacturing difficulty and cost of the working cylinder.

[0021] The working principle of this novel electrically controlled vibration damper with dual external solenoid valves is as follows: During the recovery stroke, oil in the working cylinder flows into the first inner hole of the guide, exits through the first connecting hole and out of the first outer hole into the first intermediate cylinder, and then flows into the first solenoid valve (the oil cannot flow out from the outside of the first connecting hole because of the interference fit between the inner boss of the first intermediate cylinder and the first intermediate cylinder). During the compression stroke, oil in the working cylinder flows into the second inner hole of the first bottom valve, exits through the second connecting hole and out of the second outer hole into the second intermediate cylinder, and then flows into the second solenoid valve (the oil also cannot flow out from the outside of the second connecting hole because of the interference fit between the inner boss of the second intermediate cylinder and the compression intermediate cylinder, thus preventing oil leakage).

[0022] The working principle of the electric vibration damper with a single external solenoid valve of this utility model is as follows: During the recovery stroke and compression stroke, the oil in the working cylinder flows into the first inner hole of the guide, flows out through the first connecting hole into the first outer hole into the first intermediate cylinder, and then flows into the solenoid valve (the oil cannot flow out from the outside of the first connecting hole because the boss in the inner cavity of the first intermediate cylinder is interference-fitted with the first intermediate cylinder).

[0023] Compared with the prior art, the beneficial technical effects of this utility model are: (1) The connecting holes of the working cylinder cavity and the intermediate cylinder cavity are set on the guide and the bottom valve, which can avoid the burr problem caused by opening on the working cylinder, that is, the burrs scratch the piston ring and O-ring seal, resulting in leakage. The debris of the piston ring and O-ring seal may also cause the solenoid valve to stick, resulting in the failure of the shock absorber. This utility model can avoid the problems of oil leakage and shock absorber failure. (2) When the total length of the shock absorber is the same as that of the prior art, this utility model can increase the stroke by at least 20mm, which can adapt to the platform development of more vehicle models. (3) This utility model reduces the number of parts, such as the limiting ring seat, O-ring seal, etc., and simultaneously reduces the welding of the limiting ring seat, the fixing of the O-ring seal and other processes, improves production efficiency and reduces production costs. (4) The molds for the guide and the first bottom valve in this utility model can be used to produce guides and bottom valves for traditional passive vibration dampers and traditional electric vibration dampers. The connecting holes of the guide and the first bottom valve (i.e., the first inner hole, the first outer hole, and the first connecting hole of the guide; the second inner hole, the second outer hole, and the second connecting hole of the first bottom valve) can be used on traditional passive vibration dampers and traditional electric vibration dampers without drilling. The working cylinder of the same length can also be used on traditional passive vibration dampers, which is conducive to controlling costs through large-scale production. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the dual external solenoid valve electrically controlled vibration damper of Embodiment 1 of this utility model.

[0025] Figure 2 This is a cross-sectional view and a partially enlarged schematic diagram of the dual external solenoid valve electrically controlled vibration damper of Embodiment 1 of this utility model.

[0026] Figure 3 This is a schematic diagram of the structure of the first bottom valve seat of the dual external solenoid valve electrically controlled vibration damper in Embodiment 1 of this utility model.

[0027] Figure 4 yes Figure 3 Cross-sectional view of the first bottom valve seat.

[0028] Figure 5 This is a schematic diagram of the guide with a connecting hole in the electronically controlled vibration damper of this utility model.

[0029] Figure 6 yes Figure 5 Cross-sectional view of the guide with connecting hole in the electronically controlled vibration damper.

[0030] Figure 7 This is a cross-sectional view and a partially enlarged schematic diagram of the single external solenoid valve electrically controlled vibration damper of Embodiment 2 of this utility model.

[0031] Figure 8 This is a cross-sectional view and a partially enlarged schematic diagram of an existing single external solenoid valve electrically controlled vibration damper.

[0032] Figure 9 This is a cross-sectional view and a partially enlarged schematic diagram of an existing dual external solenoid valve electronically controlled vibration damper.

[0033] The labels in the attached diagram are as follows: 1-Piston rod; 2-Piston; 3-Working cylinder; 4-Intermediate cylinder; 41-First intermediate cylinder; 42-Second intermediate cylinder; 5-Guide; 51-Guide outer peripheral surface boss; 52-First intermediate cylinder inner cavity boss; 53-First working cylinder inner cavity boss; 54-First inner hole; 55-First outer hole; 56-First connecting hole; 6-Reservoir; 7-First bottom valve; 71-Bottom valve outer peripheral surface boss; 72-Second intermediate cylinder inner cavity boss; 73-Second working cylinder inner cavity boss; 74-Second inner hole; 75-Second outer hole; 76-Second connecting hole; 8-Solenoid valve; 81-First solenoid valve; 82-Second solenoid valve; 9-Limiting ring seat; 10-Drain hole; 11-Second bottom valve. Detailed Implementation

[0034] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings, but this should not be construed as limiting the present utility model. Contents not described in detail in the following embodiments are all common knowledge in the art or can be implemented using conventional technical means in the art.

[0035] Reference to embodiments of this utility model Figure 1-9 .

[0036] Example 1 provides a dual external solenoid valve electrically controlled vibration damper. It employs the following... Figure 5 , Figure 6 The guide with a connecting hole shown has a guide outer peripheral surface boss 51, a first intermediate cylinder inner cavity boss 52, and a first working cylinder inner cavity boss 53. A first inner hole 54 is formed on the platform of the first working cylinder inner cavity boss 53, and a first outer hole 55 is formed on the platform of the first intermediate cylinder inner cavity boss 52. A first connecting hole 56 is formed on the side of the first intermediate cylinder inner cavity boss 52. The first connecting hole 56 connects the first inner hole 54 and the first outer hole 55 to form a first connecting hole. In this invention, multiple sets of the first inner hole 54, the first outer hole 55, and the first connecting hole 56 can be provided. In this embodiment, eight sets are provided to achieve more uniform oil flow between the working cylinder inner cavity and the intermediate cylinder inner cavity.

[0037] like Figure 3 , Figure 4As shown in Embodiment 1, the dual external solenoid valve electrically controlled vibration damper uses a bottom valve with a connecting hole, namely the first bottom valve 7. The valve seat of the first bottom valve 7 is provided with a bottom valve outer peripheral surface boss 71, a second intermediate cylinder inner cavity boss 72, and a second working cylinder inner cavity boss 73. A second inner hole 74 is opened on the platform of the second working cylinder inner cavity boss 73, and a second outer hole 75 is opened on the platform of the second intermediate cylinder inner cavity boss 72. A second connecting hole 76 is opened on the side of the second intermediate cylinder inner cavity boss 72. The second connecting hole 76 connects the second inner hole 74 and the second outer hole 75 to form a second connecting hole. When implementing this utility model, multiple sets of the second inner hole 74, the second outer hole 75, and the second connecting hole 76 can be provided. In this embodiment, eight sets are provided, which can more evenly realize the oil flow between the inner cavity of the working cylinder and the inner cavity of the intermediate cylinder.

[0038] like Figures 1-9 As shown in Embodiment 1, the dual external solenoid valve electrically controlled vibration damper includes a piston rod 1, a piston 2, a working cylinder 3, a first intermediate cylinder 41, a second intermediate cylinder 42, a guide 5, a liquid storage tank 6, a first bottom valve 7, a first solenoid valve 81, and a second solenoid valve 82. The piston rod 1 is connected to the piston 2 and cooperates with the guide 5. The first bottom valve 7 and the guide 5 are respectively disposed at both ends of the working cylinder 3. One end of the working cylinder 3 is interference-fitted with the inner cavity boss 53 of the first working cylinder, and the end face of the working cylinder 3 is in contact with the end face of the inner cavity boss 52 of the first intermediate cylinder; one end of the first intermediate cylinder 41 is interference-fitted with the inner cavity boss 52 of the first intermediate cylinder, and the end face of the first intermediate cylinder 41 is in contact with the end face of the outer peripheral surface boss 51 of the guide; the first inner hole 54 communicates with the inner cavity of the working cylinder 3, and the first outer hole 55 communicates with the inner cavity of the first intermediate cylinder 41. One end of the second intermediate cylinder 42 is interference-fitted with the inner cavity boss 72 of the second intermediate cylinder, and the end face of the second intermediate cylinder 42 is in contact with the end face of the outer peripheral surface boss 71 of the bottom valve; one end of the working cylinder 3 is interference-fitted with the inner cavity boss 73 of the second working cylinder, and the end face of the working cylinder 3 is in contact with the end face of the inner cavity boss 72 of the second intermediate cylinder; the second inner hole 74 communicates with the inner cavity of the working cylinder 3, and the second outer hole 75 communicates with the inner cavity of the second intermediate cylinder 42. The first solenoid valve 81 and the second solenoid valve 82 are disposed on one side of the working cylinder 3 and are respectively connected to the inner cavity of the first intermediate cylinder 41 and the inner cavity of the second intermediate cylinder 42. The first solenoid valve 81 is used in the recovery stroke, and the second solenoid valve 82 is used in the compression stroke (same as the prior art, the first solenoid valve 81 is connected to the first intermediate cylinder 41 through a guide seat with a one-way valve. The one-way valve opens in the compression stroke to connect the liquid storage tank 6 and the first intermediate cylinder 41 to compensate the oil in the upper cavity of the working cylinder 3; the second solenoid valve 82 is connected to the second intermediate cylinder 42 through a guide seat).

[0039] The working process of the electrically controlled vibration damper with dual external solenoid valves in Embodiment 1 is as follows: During the recovery stroke, the oil in the working cylinder 3 flows into the first inner hole 54 of the guide 5, flows out through the first connecting hole 56 and the first outer hole 55 into the first intermediate cylinder 41, and then flows into the first solenoid valve 81. During the compression stroke, the oil in the working cylinder 3 flows into the second inner hole 74 of the first bottom valve 7, flows out through the second connecting hole 76 and the second outer hole 75 into the second intermediate cylinder 42, and then flows into the second solenoid valve 8.

[0040] like Figure 9 As shown, in existing dual external solenoid valve electrically controlled vibration dampers, the drain holes 10 for oil flow between the inner cavity of the working cylinder 3, the inner cavity of the first intermediate cylinder 41, and the inner cavity of the second intermediate cylinder 42 are all located on the working cylinder 3. This often results in burrs or sharp edges at the openings, which are cumbersome to remove and ineffective. Improper burr treatment on the inner surface of the connecting holes can scratch the piston rings and O-rings during assembly, leading to leakage. Debris from the piston rings and O-rings can also cause the solenoid valve 8 to jam, resulting in vibration damper failure. Furthermore, during vibration damper extension and compression, the piston 2 cannot exceed the drain holes 10 (one drain hole 10 corresponds to each of the recovery and compression strokes, located at the upper and lower parts of the working cylinder 3, respectively). This results in a shorter stroke compared to other types of vibration dampers when the longitudinal dimension of the vibration damper is the same, and a larger longitudinal dimension when the stroke is the same. In Embodiment 1, a limiting ring seat 9 is provided to prevent the piston from exceeding the stroke range during vibration damper extension.

[0041] This invention places the drain hole for oil flow between the inner cavity of the working cylinder 3 and the inner cavity of the first intermediate cylinder 41 on the guide 5, specifically the first connecting hole formed by the first inner hole 51, the first outer hole 52, and the first connecting hole 53 of the guide 5. This avoids the need for a hole in the working cylinder 3, thus avoiding the burr problem of existing technologies and the short stroke of the piston rod 1, and can be adapted to the platform development of more vehicle models. Simultaneously, this invention places the drain hole for oil flow between the inner cavity of the working cylinder 3 and the inner cavity of the second intermediate cylinder 42 on the first bottom valve 7, specifically the second connecting hole formed by the second inner hole 74, the second outer hole 75, and the second connecting hole 76. This also avoids the need for a hole in the working cylinder 3 and similarly helps to increase the stroke.

[0042] like Figure 1 , Figure 2 As shown, the working cylinder 3 is a straight tube type. The straight tube structure can reduce the manufacturing difficulty and cost of the working cylinder.

[0043] Example 2 provides a single external solenoid valve electrically controlled vibration damper. For example... Figure 5 , Figure 6As shown, the electronically controlled vibration damper in Embodiment 2 also employs a guide with a connecting hole. This guide 5 has a guide outer peripheral surface boss 51, a first intermediate cylinder inner cavity boss 52, and a first working cylinder inner cavity boss 53. A first inner hole 54 is formed on the platform of the first working cylinder inner cavity boss 53, and a first outer hole 55 is formed on the platform of the first intermediate cylinder inner cavity boss 52. A first connecting hole 56 is formed on the side of the first intermediate cylinder inner cavity boss 52, connecting the first inner hole 54 and the first outer hole 55. In this invention, multiple sets of the first inner hole 54, the first outer hole 55, and the first connecting hole 56 are provided; in this embodiment, eight sets are provided, which can more evenly achieve oil flow between the working cylinder inner cavity and the intermediate cylinder inner cavity.

[0044] like Figure 5 , Figure 6 , Figure 7 As shown, the single external solenoid valve electrically controlled vibration damper of Embodiment 2 includes a piston rod 1, a piston 2, a working cylinder 3, an intermediate cylinder 4, a guide 5, a liquid storage tank 6, a second bottom valve 11 (a conventional bottom valve), and a solenoid valve 8. The working cylinder 3, the intermediate cylinder 4, and the liquid storage tank 6 are arranged sequentially from the inside to the outside. The second bottom valve 11 and the guide 5 are respectively located at both ends of the working cylinder 3. The end face of the working cylinder 3 is in contact with the end face of the inner cavity boss 52 of the first intermediate cylinder. One end of the intermediate cylinder 4 is interference-fitted with the inner cavity boss 52 of the first intermediate cylinder, and the end face of the intermediate cylinder 4 is in contact with the end face of the outer peripheral surface boss 51 of the guide. The first inner hole 54 communicates with the inner cavity of the working cylinder 3, and the first outer hole 55 communicates with the inner cavity of the intermediate cylinder 4. The solenoid valve 8 is located on one side of the working cylinder 3 and communicates with the inner cavity of the intermediate cylinder 4 (similar to the prior art, the solenoid valve 8 communicates with the intermediate cylinder 4 through a flow guide seat). The piston rod 1 is connected to the piston 2 and cooperates with the guide 5.

[0045] like Figure 7 As shown, the working cylinder 3 is a straight tube type. The straight tube structure can reduce the manufacturing difficulty and cost of the working cylinder.

[0046] like Figure 7 As shown, the working process of the electronically controlled vibration damper with a single external solenoid valve in Example 2 is as follows: During the recovery stroke and compression stroke, the oil in the working cylinder 3 flows into the first inner hole 54 of the guide 5, flows out through the first connecting hole 56 and the first outer hole 55 into the intermediate cylinder 4, and then flows into the solenoid valve 8.

[0047] The foregoing general description of the utility model and its specific embodiments should not be construed as limiting the technical solution of the utility model. Those skilled in the art, based on the disclosure of this application, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or specific embodiments (including examples) without departing from the constituent elements of the utility model, to form other technical solutions within the protection scope of this utility model.

Claims

1. A ported guide for an electronically controlled shock absorber, characterized by: The guide (5) is provided with a guide outer peripheral surface boss (51), a first intermediate cylinder inner cavity boss (52), and a first working cylinder inner cavity boss (53). A first inner hole (54) is opened on the platform of the first working cylinder inner cavity boss (53), a first outer hole (55) is opened on the platform of the first intermediate cylinder inner cavity boss (52), and a first connecting hole (56) is opened on the side of the first intermediate cylinder inner cavity boss (52). The first connecting hole (56) connects the first inner hole (54) and the first outer hole (55) to form a first connecting hole.

2. The guide with a connecting hole for an electronically controlled vibration damper according to claim 1, characterized in that: Multiple sets of the first inner hole (54), the first outer hole (55), and the first connecting hole (56) are provided.

3. A single external solenoid valve electrically controlled vibration damper, the vibration damper comprising a piston rod (1), a piston (2), a working cylinder (3), an intermediate cylinder (4), a liquid storage tank (6), a second bottom valve (11), and a solenoid valve (8); characterized in that: The vibration damper further includes a guide with a connecting hole as described in any one of claims 1-2; the second bottom valve (11) and the guide (5) are respectively disposed at both ends of the working cylinder (3); one end of the working cylinder (3) is interference-fitted with the inner cavity boss (53) of the first working cylinder, and the end face of the working cylinder (3) is in contact with the end face of the inner cavity boss (52) of the first intermediate cylinder; one end of the intermediate cylinder (4) is interference-fitted with the inner cavity boss (52) of the first intermediate cylinder, and the end face of the intermediate cylinder (4) is in contact with the end face of the outer peripheral surface boss (51) of the guide; the first inner hole (54) is connected to the inner cavity of the working cylinder (3), and the first outer hole (55) is connected to the inner cavity of the intermediate cylinder (4).

4. A single external solenoid valve electrically controlled vibration damper according to claim 3, characterized in that: The guide's outer peripheral protrusion (51) is interference-fitted with the liquid storage cylinder (6), and the guide (5) is limited by the flange structure at the end of the liquid storage cylinder (6).

5. A bottom valve with a connecting hole in an electronically controlled vibration damper, characterized in that: The bottom valve with a connecting hole is a first bottom valve (7). The valve seat of the first bottom valve (7) is provided with a bottom valve outer peripheral surface boss (71), a second intermediate cylinder inner cavity boss (72), and a second working cylinder inner cavity boss (73). A second inner hole (74) is opened on the platform of the second working cylinder inner cavity boss (73). A second outer hole (75) is opened on the platform of the second intermediate cylinder inner cavity boss (72). A second connecting hole (76) is opened on the side of the second intermediate cylinder inner cavity boss (72). The second connecting hole (76) connects the second inner hole (74) and the second outer hole (75) to form a second connecting hole.

6. The bottom valve with connecting hole in an electronically controlled vibration damper according to claim 5, characterized in that: Multiple sets of the second inner hole (74), the second outer hole (75), and the second connecting hole (76) are provided.

7. A dual external solenoid valve electrically controlled vibration damper, the vibration damper comprising a piston rod (1), a piston (2), a working cylinder (3), a first intermediate cylinder (41), a second intermediate cylinder (42), a liquid storage tank (6), a first solenoid valve (81), and a second solenoid valve (82); characterized in that: The vibration damper further includes a guide with a connecting hole for the electronically controlled vibration damper as described in claim 1 and a bottom valve with a connecting hole for the electronically controlled vibration damper as described in claim 5. The first bottom valve (7) and the guide (5) are respectively disposed at both ends of the working cylinder (3). One end of the working cylinder (3) is interference-fitted with the inner cavity boss (53) of the first working cylinder, and the end face of the working cylinder (3) is in contact with the end face of the inner cavity boss (52) of the first intermediate cylinder. One end of the first intermediate cylinder (41) is interference-fitted with the inner cavity boss (52) of the first intermediate cylinder, and the end face of the first intermediate cylinder (41) is in contact with the end face of the outer peripheral surface boss (51) of the guide. The inner hole (54) connects to the inner cavity of the working cylinder (3), and the first outer hole (55) connects to the inner cavity of the first intermediate cylinder (41); one end of the second intermediate cylinder (42) is interference-fitted with the inner cavity boss (72) of the second intermediate cylinder, and the end face of the second intermediate cylinder (42) is in contact with the end face of the outer peripheral surface boss (71) of the bottom valve; one end of the working cylinder (3) is interference-fitted with the inner cavity boss (73) of the second working cylinder, and the end face of the working cylinder (3) is in contact with the end face of the inner cavity boss (72) of the second intermediate cylinder; the second inner hole (74) connects to the inner cavity of the working cylinder (3), and the second outer hole (75) connects to the inner cavity of the second intermediate cylinder (42).

8. A dual external solenoid valve electrically controlled vibration damper according to claim 7, characterized in that: The guide's outer peripheral protrusion (51) is interference-fitted with the liquid storage cylinder (6), and the guide (5) is limited by the flange structure at the end of the liquid storage cylinder (6).

Images