Solenoid valve assembly for shock absorber

Abstract

The invention relates to a solenoid valve assembly for a shock absorber. The solenoid valve assembly comprises an electromagnet, a hydraulic module and an emergency armature mechanism. Under the condition that the electromagnet is electrified, the emergency armature mechanism is electrified and is far away from the hydraulic module, and the electromagnet is matched with the hydraulic module to provide damping force. And under the condition that the electromagnet is powered off, the emergency armature mechanism is powered off, the emergency armature mechanism is close to the hydraulic module, and the emergency armature mechanism is matched with the hydraulic module to provide damping force. By arranging the emergency armature mechanism, the problems that under the condition that power cannot be supplied, the damping force is the hardest or the softer, the damping force cannot be adjusted again, and the compromise damping force cannot be provided are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of solenoid valves, and more particularly to a solenoid valve assembly for a shock absorber. Background Art

[0002] Shock absorbers with variable damping systems use electronically controlled solenoid valves. The solenoid valves continuously vary the hydraulic resistance. Low resistance produces soft damping, and high resistance produces hard damping. However, many shock absorbers are designed to fail soft or fail hard. That is, if the solenoid valve fails, the damping force is either the hardest or the softest, and cannot be readjusted to provide a compromise damping force. Summary of the invention

[0003] An object of the present invention is to provide a solenoid valve assembly for a shock absorber that can provide a compromise damping force in the event of a sudden power failure.

[0004] The present invention provides a solenoid valve assembly for a shock absorber, comprising an electromagnet, a hydraulic module and an emergency armature mechanism.

[0005] Wherein, when the electromagnet is energized, the emergency armature mechanism is energized, and the emergency armature mechanism is away from the hydraulic module, and the electromagnet cooperates with the hydraulic module to provide damping force;

[0006] When the electromagnet is powered off, the emergency armature mechanism is powered off and the emergency armature mechanism is close to the hydraulic module, and the emergency armature mechanism cooperates with the hydraulic module to provide a damping force.

[0007] In an embodiment of the present invention, the emergency armature mechanism includes a first elastic member and an armature mechanism body, the armature mechanism body is connected to the first elastic member, and when the emergency armature mechanism is powered off, the first elastic member drives the armature mechanism body to approach the hydraulic module, and the armature mechanism body cooperates with the hydraulic module to provide damping force.

[0008] In an embodiment of the present invention, the armature mechanism body includes an armature, a disc and a sleeve, the armature is provided with a flow channel at the end close to the hydraulic module, the disc is provided at the end of the armature and covers the flow channel, the sleeve is sleeved inside the armature, and the end of the sleeve has a flange bent outward, the inner side of the disc is clamped between the end of the armature and the flange, the side wall of the sleeve is provided with an opening, the opening is connected to the flow channel, and the disc is elastic.

[0009] In the embodiment of the present invention, when the emergency armature mechanism is powered off, the flange abuts against the housing of the hydraulic module, the sleeve forms a hydraulic oil chamber, the hydraulic oil of the hydraulic module passes through the hydraulic oil chamber and the opening to the flow channel, and the hydraulic oil of the hydraulic module squeezes the disc and flows out of the flow channel.

[0010] In an embodiment of the present invention, the emergency armature mechanism further includes a second elastic member, the second elastic member is connected to the disc, and the second elastic member is used to drive the disc to abut against the end of the armature.

[0011] In an embodiment of the present invention, a plurality of the flow channels are provided at the end of the armature, and a plurality of the openings are provided on the side wall of the sleeve, and the openings correspond to the flow channels one by one.

[0012] In an embodiment of the present invention, the hydraulic module includes a pilot valve and a pilot hole. The oil pressure at the pilot hole controls the opening of the pilot valve. When the emergency armature mechanism is powered off, the pilot valve is opened and the hydraulic oil of the hydraulic module flows to the hydraulic oil chamber.

[0013] In an embodiment of the present invention, the second elastic member is a wave spring.

[0014] In the solenoid valve assembly for shock absorber of the present invention, the solenoid valve assembly includes an electromagnet, a hydraulic module and an emergency armature mechanism. When the electromagnet is energized, the emergency armature mechanism is energized, and the emergency armature mechanism is far away from the hydraulic module, and the electromagnet cooperates with the hydraulic module to provide damping force. When the electromagnet is powered off, the emergency armature mechanism is powered off, and the emergency armature mechanism is close to the hydraulic module, and the emergency armature mechanism cooperates with the hydraulic module to provide damping force. That is, under normal circumstances, the electromagnet cooperates with the hydraulic module to provide damping force. When a fault occurs, the power supply is out of power or the wire is faulty, the electromagnet is powered off, and the movement of the electromagnet is uncontrolled. At this time, if there is no emergency armature mechanism, the damping force is either the hardest or the softest, and it cannot be adjusted again, and a compromise damping force cannot be provided. The present invention has an emergency armature mechanism, and when a fault occurs, the emergency armature mechanism can cooperate with the hydraulic module to provide damping force, thereby providing a compromise damping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural diagram of a solenoid valve assembly in an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A partial schematic diagram of

[0017] Figure 3 For the present invention Figure 1 A partial schematic diagram of another state;

[0018] Figure 4 Schematic diagram of damping force generated by different currents in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The following detailed description and drawings are used to illustrate the principle of the present invention. The present invention is not limited to the preferred embodiments described. The protection scope of the present invention is defined by the claims.

[0020] like Figures 1 to 3 As shown, an embodiment of the present invention provides a solenoid valve assembly for a shock absorber. The solenoid valve assembly can be used in a shock absorber to change the hydraulic resistance, thereby generating a damping force.

[0021] The solenoid valve assembly for the shock absorber includes an electromagnet 100, a hydraulic module 200, and an emergency armature mechanism 300. When the electromagnet 100 is powered on, the emergency armature mechanism 300 is powered on, and the emergency armature mechanism 300 is far away from the hydraulic module 200, and the electromagnet 100 cooperates with the hydraulic module 200 to provide a damping force. When the electromagnet 100 is powered off, the emergency armature mechanism 300 is powered off, and the emergency armature mechanism 300 is close to the hydraulic module 200, and the emergency armature mechanism 300 cooperates with the hydraulic module 200 to provide a damping force.

[0022] The electromagnet 100 is powered on to generate electromagnetic force, so that it can move. When moving, it can cooperate with the hydraulic module 200 to change the hydraulic resistance, thereby generating a damping force. However, when a fault occurs, for example, when the power supply is out of power or the wire is faulty, or when other electromagnets 100 cannot be powered, the electromagnet 100 is powered off and the movement of the electromagnet 100 is uncontrolled. At this time, the damping force is either the hardest or the softest, and cannot be adjusted again, and a compromise damping force cannot be provided.

[0023] The solenoid valve assembly in the present invention also has an emergency armature mechanism 300. When a fault occurs, the emergency armature mechanism 300 can cooperate with the hydraulic module 200 to provide a damping force, thereby providing a compromise damping force to avoid the situation where the compromise damping force cannot be provided in the event of a power outage.

[0024] In the embodiment of the present invention, the emergency armature mechanism 300 includes a first elastic member 310 and an armature mechanism body, and the armature mechanism body is connected to the first elastic member 310. When the emergency armature mechanism 300 is powered off, the first elastic member 310 drives the armature mechanism body to approach the hydraulic module 200, and the armature mechanism body cooperates with the hydraulic module 200 to provide damping force.

[0025] That is, in the embodiment of the present invention, when a fault occurs, for example, when the power supply is out of power or the wires are faulty, or when other electromagnets 100 cannot supply power, both the electromagnet 100 and the emergency armature mechanism 300 are powered off, and the emergency armature mechanism 300 drives the armature mechanism body close to the hydraulic module 200 through the elastic force of the first elastic member 310.

[0026] During normal operation, the electromagnet 100 and the emergency armature mechanism 300 are both powered on, and the electromagnet 100 generates electromagnetic force to control its movement, and the armature mechanism body of the emergency armature mechanism 300 also generates electromagnetic force, which can compress or stretch the first elastic member 310, so that the first elastic member 310 accumulates energy. When a fault occurs, the electromagnet 100 and the emergency armature mechanism 300 are both powered off, and the first elastic member 310 releases the accumulated energy, so that the elastic force of the first elastic member 310 can drive the armature mechanism body to approach the hydraulic module 200, so that the armature mechanism body and the hydraulic module 200 cooperate to provide damping force.

[0027] The first elastic member 310 may be a spring or other types of elastic members, which is not limited in the embodiment of the present invention.

[0028] In the embodiment of the present invention, the armature mechanism body includes an armature 320, a disc 330 and a sleeve 350. The end of the armature 320 close to the hydraulic module 200 is provided with a flow channel 321, and the disc 330 is provided at the end of the armature 320 and covers the flow channel 321. The sleeve 350 is sleeved inside the armature 320, and the end of the sleeve 350 has a flange 351 bent outward. The inner side of the disc 330 is sandwiched between the end of the armature 320 and the flange 351. The side wall of the sleeve 350 is provided with an opening 353, and the opening 352 is connected to the flow channel 321. The disc 330 is elastic.

[0029] The armature 320 can generate electromagnetic force when it is energized, thereby generating driving force. The sleeve 350 is sleeved inside the armature 320, and the sleeve 350 can move with the armature 320. The sleeve 350 can be connected to the inner side of the armature 320 by threaded connection.

[0030] The end of the armature 320 close to the hydraulic module 200 is provided with a flow channel 321, and the side wall of the sleeve 350 is provided with an opening 353, and the opening 352 is connected to the flow channel 321. That is, the hydraulic oil can enter the flow channel 321 through the opening 352. The disc 330 covers the flow channel 321, and the disc 330 has elasticity. When the pressure of the hydraulic oil in the flow channel 321 increases, the disc 330 is squeezed, the disc 330 can be deformed, and the hydraulic oil can flow out of the flow channel 321. That is, under a certain pressure, the disc 330 can be squeezed and deformed, so that the hydraulic oil can flow out of the flow channel 321. Therefore, the disc 330 can provide a certain damping force.

[0031] When the emergency armature mechanism 300 is powered off, the hydraulic oil of the hydraulic module 200 squeezes the disc 330, and the hydraulic oil of the hydraulic module 200 flows out of the flow channel 321. The disc 330 can provide a certain damping force, so that the emergency armature mechanism 300 and the hydraulic module 200 cooperate to provide a compromise damping force, thereby avoiding the situation where the compromise damping force cannot be provided in the case of power failure.

[0032] When the emergency armature mechanism 300 is powered off, the flange 351 abuts against the housing of the hydraulic module 200. The sleeve 350 forms a hydraulic oil chamber 220, and the hydraulic oil of the hydraulic module 200 passes through the hydraulic oil chamber 220 and the opening 352 to the flow channel 321. The hydraulic oil of the hydraulic module 200 squeezes the disc 330 and flows out of the flow channel 321. In this way, when the emergency armature mechanism 300 is powered off, the hydraulic oil of the hydraulic module 200 squeezes the disc 330, and the hydraulic oil of the hydraulic module 200 flows out of the flow channel 321, thereby providing a certain damping force.

[0033] In the embodiment, the end of the armature 320 is provided with a plurality of flow channels 321, and the side wall of the sleeve 350 is provided with a plurality of openings 352, and the openings 352 correspond to the flow channels 321 one by one. The provision of a plurality of flow channels 321 and openings 352 can ensure that the internal hydraulic oil flows out uniformly, ensure that the internal pressure is uniform, and avoid excessive local pressure. Furthermore, the size of the opening 352 can be larger than the size of the cross section of the flow channel 321, so that the hydraulic oil can be better guided into the flow channel 321.

[0034] In an embodiment of the present invention, the hydraulic module 200 includes a pilot valve 210 and a pilot hole 230. The oil pressure at the pilot hole 230 controls the opening of the pilot valve 210. When the emergency armature mechanism 300 is powered off, after the pilot valve 210 is opened, the hydraulic oil of the hydraulic module 200 flows to the hydraulic oil chamber 220. When the oil pressure at the pilot hole 230 reaches a preset pressure, the opening of the pilot valve 210 can be controlled. At this time, the hydraulic oil can flow to the hydraulic oil chamber 220, and then flow to the flow channel 321 through the hydraulic oil chamber 220 and the opening 352. The hydraulic oil of the hydraulic module 200 squeezes the disc 330 and flows out of the flow channel 321, thereby providing a certain damping force when the emergency armature mechanism 300 is powered off.

[0035] Of course, the hydraulic module 200 also includes other structures such as a main valve and a hydraulic oil circuit, which are not described in detail in the embodiment of the present invention.

[0036] In the embodiment of the present invention, the emergency armature mechanism 300 further includes a second elastic member, which is connected to the disc 330 and is used to drive the disc 330 to abut against the end of the armature 320. The second elastic member is not shown in the figure, and can be arranged between the disc 330 and the housing of the hydraulic module 200, that is, one end of the second elastic member abuts against the housing of the hydraulic module 200, and the other end abuts against the disc 330.

[0037] During normal operation, the emergency armature mechanism 300 is powered on, and under the action of electromagnetic force, the emergency armature mechanism 300 moves away from the hydraulic module 200. At this time, the second elastic member releases the stored energy, and the disc 330 is pressed against the end of the armature 320. When a fault occurs, the electromagnet 100 and the emergency armature mechanism 300 are powered off, and the emergency armature mechanism 300 is driven by the first elastic member 310 to move closer to the hydraulic module 200. At this time, the second elastic member is compressed or stretched, thereby accumulating energy.

[0038] The second elastic member is provided to ensure that the disc 330 fits snugly against the end of the armature 320 when there is no pressure or a low pressure in the flow channel 321. After the second elastic member is provided, when the hydraulic oil squeezes the disc 330, in addition to overcoming the elastic force of the disc 330 itself, it also has to overcome the pressure of the second elastic member.

[0039] The second elastic member may be a wave spring, which can provide a larger elastic force in a smaller space. Of course, it may also be an elastic member in other forms, which is not limited in the embodiment of the present invention.

[0040] like Figure 3 As shown, in normal operation, the electromagnet 100 and the emergency armature mechanism 300 are both energized, that is, when the current is not zero, the emergency armature mechanism 300 moves upward under the action of the electromagnetic force, the first elastic member 310 is compressed, and the hydraulic oil of the hydraulic module 200 directly flows into the pressure relief oil circuit. Figure 2 As shown, when a fault occurs, the electromagnet 100 and the emergency armature mechanism 300 are both powered off, that is, the current is zero, and the emergency armature mechanism 300 moves downward under the action of the first elastic member 310, and the flange 351 of the sleeve 350 abuts against the housing of the hydraulic module 200 to form a hydraulic oil chamber 220, and the hydraulic oil of the hydraulic module 200 flows through the hydraulic oil chamber 220 and the opening 352 to the flow channel 321. Then the disc 330 is squeezed out of the flow channel 321 and flows into the pressure relief oil circuit. Thus, a certain damping force is provided when the emergency armature mechanism 300 is powered off. Figure 2 and Figure 3 The direction of the arrow in the middle indicates the direction of the hydraulic oil circuit.

[0041] like Figure 4As shown, it is a schematic diagram of the damping force generated by different currents in the embodiment of the present invention. Among them, curve A is the damping force generated when the current is zero, curve B is the damping force generated when the current is 0.4A, and curve C is the damping force generated when the current is 2A. When the current is zero, the hydraulic oil needs to squeeze the disc 330 to flow out of the flow channel 321. When the current is not zero, the hydraulic oil does not need to flow through the opening 352 and the flow channel 321. Therefore, the damping force generated at a current of 0.4A is less than the damping force generated at a current of 0A.

[0042] Furthermore, when a fault occurs, the damping force can be adjusted by adjusting the armature 320, the disc 330, the first elastic member 310, and the second elastic member. Therefore, the damping force can also be adjusted according to different application requirements.

[0043] In the solenoid valve assembly for shock absorber of the present invention, the solenoid valve assembly includes an electromagnet 100, a hydraulic module 200 and an emergency armature mechanism 300. When the electromagnet 100 is powered on, the electromagnet 100 cooperates with the hydraulic module 200 to provide damping force. When the electromagnet 100 is powered off, the emergency armature mechanism 300 approaches the hydraulic module 200 through elastic force, and the emergency armature mechanism 300 cooperates with the hydraulic module 200 to provide damping force. Under normal circumstances, the electromagnet 100 cooperates with the hydraulic module 200 to provide damping force. When a fault occurs, the power supply is out of power or the wire is faulty, the electromagnet 100 is powered off, and the movement of the electromagnet 100 is uncontrolled. At this time, if there is no emergency armature mechanism 300, the damping force is either the hardest or the softest, and it cannot be adjusted again, and a compromise damping force cannot be provided. In the present invention, when a fault occurs, the emergency armature mechanism 300 can cooperate with the hydraulic module 200 to provide damping force, thereby providing a compromise damping force.

[0044] In summary, in the embodiment of the present invention, by providing the emergency armature mechanism 300, the problem that when power is unavailable, the damping force is either the hardest or the softest and cannot be adjusted again, and a compromise damping force cannot be provided is solved.

[0045] As mentioned above, although the exemplary embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments, and the protection scope of the present invention should be defined by the claims and their equivalents.

[0046] Reference numerals list

[0047] Electromagnet 100

[0048] Hydraulic module 200

[0049] Pilot valve 210

[0050] Hydraulic oil chamber 220

[0051] Pilot hole 230

[0052] Emergency armature mechanism 300

[0053] The first elastic member 310

[0054] Armature 320

[0055] Runner 321

[0056] Disc 330

[0057] Sleeve 350

[0058] Flange 351

[0059] Opening 352

Claims

1. A solenoid valve assembly for a shock absorber, characterized in that: It comprises an electromagnet (100), a hydraulic module (200) and an emergency armature mechanism (300), Wherein, when the electromagnet (100) is energized, the emergency armature mechanism (300) is energized, and the emergency armature mechanism (300) is away from the hydraulic module (200), and the electromagnet (100) cooperates with the hydraulic module (200) to provide a damping force; When the electromagnet (100) is powered off, the emergency armature mechanism (300) is powered off, and the emergency armature mechanism (300) is close to the hydraulic module (200), and the emergency armature mechanism (300) cooperates with the hydraulic module (200) to provide a damping force.

2. The solenoid valve assembly for a shock absorber according to claim 1, characterized in that: The emergency armature mechanism (300) comprises a first elastic member (310) and an armature mechanism body, wherein the armature mechanism body is connected to the first elastic member (310), and when the emergency armature mechanism (300) is powered off, the first elastic member (310) drives the armature mechanism body to approach the hydraulic module (200), and the armature mechanism body cooperates with the hydraulic module (200) to provide a damping force.

3. The solenoid valve assembly for a shock absorber according to claim 2, characterized in that: The armature mechanism body comprises an armature (320), a disc (330) and a sleeve (350); the armature (320) is provided with a flow channel (321) at the end close to the hydraulic module (200); the disc (330) is provided at the end of the armature (320) and covers the flow channel (321); the sleeve (350) is sleeved inside the armature (320), and the end of the sleeve (350) has a flange (351) bent outwards; the inner side of the disc (330) is sandwiched between the end of the armature (320) and the flange (351); the side wall of the sleeve (350) is provided with an opening (353); the opening (352) is communicated with the flow channel (321); and the disc (330) is elastic.

4. The solenoid valve assembly for a shock absorber according to claim 3, characterized in that: When the emergency armature mechanism (300) is powered off, the flange (351) abuts against the housing of the hydraulic module (200), the sleeve (350) forms a hydraulic oil chamber (220), the hydraulic oil of the hydraulic module (200) passes through the hydraulic oil chamber (220) and the opening (352) to the flow channel (321), and the hydraulic oil of the hydraulic module (200) squeezes the disc (330) and flows out of the flow channel (321).

5. The solenoid valve assembly for a shock absorber according to claim 3, characterized in that: The emergency armature mechanism (300) further comprises a second elastic member, wherein the second elastic member is connected to the disc (330), and the second elastic member is used to drive the disc (330) to abut against the end of the armature (320).

6. The solenoid valve assembly for a shock absorber according to claim 3, characterized in that: The end of the armature (320) is provided with a plurality of the flow channels (321), and the side wall of the sleeve (350) is provided with a plurality of the openings (352), and the openings (352) correspond to the flow channels (321) one by one.

7. The solenoid valve assembly for a shock absorber according to claim 4, characterized in that: The hydraulic module (200) comprises a pilot valve (210) and a pilot hole (230). The oil pressure at the pilot hole (230) controls the opening of the pilot valve (210). When the emergency armature mechanism (300) is powered off, the pilot valve (210) is opened, and the hydraulic oil of the hydraulic module (200) flows to the hydraulic oil chamber (220).

8. The solenoid valve assembly for a shock absorber according to claim 5, characterized in that: The second elastic member is a wave spring.

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