Shock absorber electromagnetic valve

Abstract

The utility model relates to an electromagnetic valve of a shock absorber, which comprises an electromagnetic component, a control valve core (9) on an overflow valve is driven by the electromagnetic component to adjust the opening degree of a valve hole on a control valve seat (8.1), and a first spring (10) is positioned between the control valve core (9) and the control valve seat (8.1) of the overflow valve. And two ends of the second spring (11) respectively act on the push rod (6) and a control valve core (9) of the overflow valve. According to the solenoid valve of the shock absorber, the mounting position of the second spring is changed, so that later disassembly and maintenance are facilitated, the number of spare and accessory parts is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a shock absorber electromagnetic valve, in particular to a solenoid valve applied to a shock absorber on a vehicle and having an electromagnetic damping effect, belonging to the technical field of electromagnetic valves. Background Art

[0002] At present, in the CDC (Continuous Damping Control) system, electromagnetic valves are used to adjust the hydraulic pressure to achieve damping. For example, CN200980124628X "Pressure regulating device for shock absorber valve" applied by Swedish Öhlins Racing Company in China and CN2024205444239 "A relief valve and shock absorption electromagnetic valve" declared by our company both use electromagnetic components to drive the relief valve to achieve the regulation of hydraulic pressure. The core components of its pressure regulation are the first spring (or valve core spring) and the second spring (or upper valve plate). Since the first spring (or valve core spring) and the second spring (or upper valve plate) are both installed in the valve body, it is necessary to set a boss on the inner cavity of the valve body to clamp the second spring (or upper valve plate) together with the valve seat (or control base). Therefore, there are two major drawbacks: first, since the second spring (or upper valve plate) is installed in the valve body of the relief valve, it is inconvenient to replace it. After removing the relief valve, it is necessary to disassemble it to take out the second spring (or upper valve plate) for replacement; second, since the second spring (or upper valve plate) needs to be fixed by the valve seat (or control base), the valve seat can only adopt a split assembly structure, which not only increases the number of parts, but also reduces the assembly efficiency. Therefore, it is urgent to redesign a special solenoid valve for shock absorbers that can solve the above problems. Summary of the invention

[0003] The utility model aims to overcome the above-mentioned shortcomings and provide a shock absorber solenoid valve, which is convenient for later disassembly and maintenance by changing the installation position of the second spring, reduces the number of spare parts and improves assembly efficiency.

[0004] The purpose of the utility model is achieved in this way:

[0005] A shock absorber solenoid valve includes an electromagnetic component, which drives a control valve core on an overflow valve to adjust the opening degree of a valve hole on a control valve seat. A first spring is located between the control valve core and the control valve seat of the overflow valve, and a second spring is located in the electromagnetic component, and two ends of the second spring act on a push rod and the control valve core of the overflow valve respectively.

[0006] Preferably, the second spring is sleeved on the push rod of the electromagnetic assembly, and a spring supporting flange is protruding from the lower outer wall of the push rod, the upper part of the second spring is limited by the spring supporting flange, and the lower part of the second spring is supported on the upper surface of the control valve core.

[0007] Preferably, the overflow valve body and the control valve seat are an integrated structure, the control valve seat divides the valve cavity of the overflow valve body into an upper valve cavity and a lower valve cavity, and the upper valve cavity and the lower valve cavity are connected through the valve hole on the control valve seat, and the control valve core is slidably arranged in the upper valve cavity.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] The utility model transfers the installation position of the second spring from the overflow valve body to the electromagnetic assembly, and the electromagnetic assembly and the overflow valve are originally a plug-in matching structure, so when the second spring needs to be replaced, the second spring can be quickly and conveniently replaced after the electromagnetic assembly and the overflow valve are separated. At the same time, since the second spring does not need to be fixed by the base, the control base can be conveniently formed into an integral structure with the overflow valve body, which not only reduces the number of parts, but also reduces the assembly process and avoids assembly errors, so it is beneficial to improve the production efficiency of the product and improve its quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a structural schematic diagram of a shock absorber solenoid valve of the utility model (when the driving current of the electromagnetic component is 0A).

[0011] Figure 2 This is a schematic diagram of the structure of a shock absorber solenoid valve of the utility model (when the driving current of the electromagnetic component is 0.4A).

[0012] in:

[0013] Valve seat 1, magnetic isolation ring 2, upper valve body 3, coil assembly 4, moving iron core 5, push rod 6, static iron core 7, overflow valve body 8, control valve core 9, first spring 10, second spring 11, overflow valve core 12, overflow base 13, overflow spring 14;

[0014] Spring support flange 6.1;

[0015] Control valve seat 8.1. DETAILED DESCRIPTION

[0016] See also Figure 1 and Figure 2 The utility model relates to a shock absorber solenoid valve, which includes an electromagnetic component and a relief valve driven by the electromagnetic component;

[0017] The electromagnetic assembly includes a valve seat 1, a magnetic isolation ring 2 and an upper valve body 3. The valve seat 1 and the upper valve body 3 are connected via the magnetic isolation ring 2 to form a shell structure. The coil assembly 4 is mounted outside the shell. The static iron core 7 is fixedly arranged in the valve seat 1, and the moving iron core 5 is slidably arranged in the shell cavity of the shell. The push rod 6 connected to the moving iron core 5 passes through the static iron core 7 to drive the overflow valve.

[0018] The relief valve comprises a relief valve body 8, a control valve seat 8.1 is integrally formed in the valve cavity of the relief valve body 8, the control valve seat 8.1 divides the valve cavity of the relief valve body 8 into an upper valve cavity and a lower valve cavity, and the upper valve cavity and the lower valve cavity are connected through the valve hole on the control valve seat 8.1, a control valve core 9 is slidably arranged in the upper valve cavity, and a first spring 10 is located between the control valve core 9 and the upper surface of the control valve seat 8.1, the control valve core 9 controls the opening and closing of the valve hole on the control valve seat 8.1, and the push rod 6 of the aforementioned electromagnetic assembly passes through the static iron core 7 and then pushes the control valve core 9;

[0019] The overflow valve core 12 is slidably disposed in the lower valve cavity, an overflow base 13 is fixedly disposed at the bottom of the overflow valve body 8, and an overflow spring 14 is located between the overflow valve core 12 and the lower surface of the control valve seat 8.1.

[0020] Preferably, the second spring 11 is mounted on the push rod 6, and a spring support flange 6.1 is protruding from the lower outer wall of the push rod 6, the upper part of the second spring 11 is limited by the spring support flange 6.1, and the lower part of the second spring 11 is supported on the upper surface of the control valve core 9.

[0021] Compared with the second spring in the background technology, the second spring 11 in this embodiment is arranged in the electromagnetic assembly. During assembly, the electromagnetic assembly and the relief valve are installed separately first, and then the second spring 11 is inserted into the lower part of the push rod 6 before the two are plugged in and matched, and then the relief valve is plugged into the valve seat 1 of the electromagnetic assembly to complete the installation.

[0022] When the second spring 11 needs to be disassembled and replaced, it can be easily replaced by simply separating the overflow valve and the valve seat 1 of the electromagnetic assembly.

[0023] At the same time, since the installation position of the second spring 11 is changed, the control valve seat 8.1 and the overflow valve body 8 in this embodiment adopt an integrated structure, which simplifies the components of the solenoid valve, reduces the difficulty of processing and assembly, and improves assembly efficiency.

[0024] When in use, when the driving current of the electromagnetic component is 0A, the oil flows like Figure 1 As shown, after the oil is introduced through the overflow base 13, it passes through the overflow valve core 12 and the valve hole of the control valve seat 8.1, and flows out from the gap between the control valve core 9 and the valve hole of the control valve seat 8.1 (at this time, the installation position of the second spring 11 is changed to replace the installation position of the valve plate in the background technology, and presses down the control valve core 9 to play the role of controlling the gap), and then flows out through the gap between the control valve core 9 and the inner wall of the overflow valve body 8 to the overflow groove on the top surface of the overflow valve body 8.

[0025] When the driving current of the electromagnetic component is a small current of 0.4A, the oil flows like Figure 2 As shown, at this time, the control valve core 9 closes the valve hole on the control valve seat 8.1, and then the oil enters the central inclined oil hole of the control valve core 8 and overflows upward, and is introduced into the overflow groove on the top surface of the overflow valve body 8 through the gap between the top of the control valve core 8 and the bottom of the push rod 6 and flows out.

[0026] In addition: It should be noted that the above specific implementation is only an optimization scheme of this patent. Any changes or improvements made by technicians in this field based on the above concept are within the scope of protection of this patent.

Claims

1. A shock absorber solenoid valve, comprising an electromagnetic assembly, the electromagnetic assembly drives a control valve core (9) on a relief valve to adjust the opening degree of a valve hole on a control valve seat (8.1), a first spring (10) is located between the control valve core (9) of the relief valve and the control valve seat (8.1), and is characterized in that: The second spring (11) is located in the electromagnetic assembly, and two ends of the second spring (11) act on the push rod (6) and the control valve core (9) of the overflow valve respectively.

2. A shock absorber solenoid valve according to claim 1, characterized in that: The second spring (11) is sleeved on the push rod (6) of the electromagnetic assembly, and a spring support flange (6.1) is protrudingly provided on the lower outer wall of the push rod (6), the upper part of the second spring (11) is limited by the spring support flange (6.1), and the lower part of the second spring (11) is supported on the upper surface of the control valve core (9).

3. The shock absorber solenoid valve according to claim 1, characterized in that: The overflow valve body (8) and the control valve seat (8.1) are an integrated structure. The control valve seat (8.1) divides the valve cavity of the overflow valve body (8) into an upper valve cavity and a lower valve cavity. The upper valve cavity and the lower valve cavity are connected via a valve hole on the control valve seat (8.1). The control valve core (9) is slidably arranged in the upper valve cavity.

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