Suspension electromagnetic valve
By using a conical head designed valve core and oil drain hole wire in the suspension solenoid valve, combined with the return spring and coil drive, the problem of slow oil drainage action of the existing suspension solenoid valve is solved, and the effect of sensitive oil drainage action and short response time is achieved.
Patent Information
- Application Number
- CN202422710973.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-11-06
AI Technical Summary
The existing suspension solenoid valve is connected with the valve core and the oil drain hole with a surface sealing connection, resulting in a slow oil drainage action and a long response time.
The valve core designed with a conical head is sealed and connected to the oil drain hole line, and combined with the return spring and coil drive, the valve core quickly opens the oil drain hole.
The oil drainage action is sensitive, the response time is short, and the sealing effect is enhanced as the oil pressure increases.
Smart Images
Figure CN223190900U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an automobile suspension, in particular to a suspension solenoid valve. Background Art
[0002] Existing suspension solenoid valves use a face-seal connection between the valve core and the oil drain hole. This involves inserting a section of the stem of the valve core into the drain hole to close the oil drain passage. Therefore, the drain passage can only be opened after the stem core is completely withdrawn from the drain hole. This requires a certain amount of time for the stem core to fully withdraw from the drain hole, resulting in a slow oil drain action and a long response time for this type of suspension solenoid valve. Utility Model Content
[0003] The utility model aims to improve the above-mentioned defects of the existing suspension solenoid valve.
[0004] For this purpose, the utility model adopts the following technical solutions:
[0005] A suspension solenoid valve comprises a valve body, a valve sleeve, a guide sleeve, a valve core, a yoke, a return spring, a coil and a shell.
[0006] The valve body is cylindrical and has an oil drain hole in the center of its front end face, a control chamber in the center of its rear end face, a valve chamber inside which is linearly connected to the oil drain hole and the control chamber, and an oil outlet radially connected to the valve chamber and the outside world on the side wall. The oil drain hole is a circular hole, and both the valve chamber and the control chamber are circular chambers. The diameter of the oil drain hole is smaller than the diameter of the valve chamber, and the diameter of the valve chamber is smaller than the diameter of the control chamber.
[0007] The valve sleeve includes a disc, a circular tube uprightly arranged in the center of the front disc surface of the disc, and a circular ring arranged at a distance on the outer periphery of the circular tube. The disc is provided with a central hole that is linearly connected to the circular tube. The central hole is a circular hole with a diameter larger than the inner diameter of the circular tube. The front end of the circular tube is screwed and fixed in the valve cavity outside the oil outlet so that the circular ring docks with the control cavity and a closed oil inlet cavity is enclosed between the disc, the circular tube, the circular ring and the valve body. The wall of the circular tube is radially provided with an oil guide hole connecting its cavity and the oil inlet cavity, and the ring wall of the circular ring is radially provided with an oil inlet connecting the oil inlet cavity and the outside world.
[0008] One end of the guide sleeve is plugged and fixed in the center hole of the disc.
[0009] The valve core includes a thick cylindrical section and a thin cylindrical section centrally located on the front end of the thick cylindrical section. The front end of the thin cylindrical section is provided with a convex conical head, and the outer wall of the thin cylindrical section behind the conical head is provided with a concave oil guide groove. The thick cylindrical section is movably slidably arranged in the guide sleeve, and the thin cylindrical section is sealingly slidably arranged in the circular tube. The oil guide groove is always connected to the oil guide hole. The diameter of the conical head is larger than the inner diameter of the oil drain hole and is directly opposite to the oil drain hole.
[0010] The yoke is fixed in the guide sleeve at the rear side of the valve core.
[0011] The return spring is arranged in the guide sleeve and its two ends respectively support the valve core and the yoke to drive the valve core forward and block the inner opening of the oil drain hole by the conical head, thereby connecting the valve cavity and the oil guide groove while isolating the oil drain hole and the valve cavity.
[0012] The coil is sleeved and fixed on the periphery of the guide sleeve to drive the valve core to overcome the tension of the return spring and the resistance of the oil pressure and retreat to open the oil drain hole after power is turned on, thereby connecting the valve cavity and the oil guide groove while also connecting the oil drain hole and the valve cavity.
[0013] The shell is a front-opened cylindrical body, which is sleeved on the periphery of the coil and fixed to the disc through the front opening.
[0014] As a preferred solution, there are four oil outlets and they are evenly arranged around the peripheral wall of the valve body.
[0015] As a preferred solution, the rear end of the yoke is plugged and fixed into a socket provided at the bottom of the rear cylinder of the shell.
[0016] As a preferred solution, the front end of the return spring is inserted into the first spring hole provided on the rear end surface of the valve core, and the rear end is inserted into the second spring hole provided on the front end surface of the yoke.
[0017] As a preferred solution, the guide sleeve is a plastic round tube sleeve.
[0018] As a preferred solution, there are two oil inlets, which are respectively arranged on the corresponding two sides of the ring.
[0019] As a preferred solution, two oil guide holes are provided and are respectively arranged on the corresponding two sides of the circular tube.
[0020] As a preferred solution, the two oil guide holes and the two oil inlets are all located on the same plane.
[0021] As a preferred solution, sealing ring installation grooves are provided on the outer walls of the valve body on both sides of the oil outlet.
[0022] As a preferred solution, a connecting pipe communicating with the central hole of the disc is provided on the rear surface of the disc, and the front end of the coil 7 is sleeved and fixed on the connecting pipe.
[0023] This utility model features a conical head with a larger diameter than the inner opening of the oil drain hole at the front end of the valve core. This conical head seals the inner opening of the oil drain hole using a wire seal. This allows the drain hole to be opened with a slight displacement, resulting in a sensitive oil drain action and a short response time. Furthermore, the wire seal between the valve core and the valve body increases the sealing pressure as the oil pressure rises, further enhancing the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a schematic diagram of the overall structure of the embodiment of the utility model when the oil drain channel is closed
[0025] Figure 2 This is an exploded view of the overall structure of the embodiment of the utility model
[0026] Figure 3 This is a cross-sectional view of the overall structure of an embodiment of the utility model
[0027] Figure 4 for Figure 3 Exploded view
[0028] Figure 5 This is a schematic diagram of the overall structure of the embodiment of the utility model when the oil drain channel is opened DETAILED DESCRIPTION
[0029] The present invention will be described below with reference to the accompanying drawings and specific embodiments.
[0030] Reference Figure 1-4 A suspension solenoid valve includes a cylindrical valve body 1 with an oil drain hole 1.1 centered on its front end, a control chamber 1.3 centered on its rear end, a valve chamber 1.2 internally defining a linear connection between the oil drain hole 1.1 and the control chamber 1.3, and an oil outlet 1.4 radially extending from the sidewall to the valve chamber 1.2 and the outside world. The oil drain hole 1.1 is circular, and both the valve chamber 1.2 and the control chamber 1.3 are circular. The diameter of the oil drain hole 1.1 is smaller than that of the valve chamber 1.2, which in turn is smaller than that of the control chamber 1.3. Four oil outlets 1.4 are evenly distributed around the circumference of the valve body 1. Seal ring mounting grooves 1.5 are provided on the outer wall of the valve body 1, located in front of and behind the oil outlet 1.4.
[0031] The valve sleeve 2 further comprises a disc 2.1, a circular tube 2.2 vertically disposed in the center of the front surface of the disc 2.1, a circular ring 2.3 disposed at a distance from the outer periphery of the circular tube 2.2, and a connecting pipe 2.4 disposed on the rear surface of the disc 2.1. The disc 2.1 is provided with a central hole 2.11 linearly connected to the circular tube 2.2. The central hole 2.11 is a circular hole with a diameter larger than the inner diameter of the circular tube 2.2. The connecting pipe 2.4 is connected to the central hole 2.11. Two oil inlets 2.31 are provided, one on each side of the circular ring 2.3. Two oil guide holes 2.21 are provided, one on each side of the circular tube 2.2. The two oil guide holes 2.21 and the two oil inlets 2.31 are coplanar. The front end of the circular tube 2.2 is threadedly fixed in the valve cavity 1.2 outside the oil outlet 1.4, so that the circular ring 2.3 is connected to the control cavity 1.3, and the disc 2.1, circular tube 2.2, circular ring 2.3 and valve body 1 form a closed oil inlet cavity 9. The wall of the circular tube 2.2 is radially provided with an oil guide hole 2.21 connecting the tube cavity thereof and the oil inlet cavity 9, and the ring 2.3 is radially provided with an oil inlet port 2.31 connecting the oil inlet cavity 9 and the outside world.
[0032] It also includes a guide sleeve 3, which is a plastic round tube sleeve and one end of which is inserted and fixed in the center hole 2.11 of the disk.
[0033] The valve core 4 is further comprised of a coarse cylindrical section 4.1 and a thin cylindrical section 4.2 centrally arranged on the front end face of the coarse cylindrical section 4.1. The front end of the thin cylindrical section 4.2 is provided with a convex conical head 4.21, and the outer wall ring of the thin cylindrical section 4.2 behind the conical head 4.21 is provided with a concave oil guide groove 4.22; the coarse cylindrical section 4.1 is movably slidably arranged in the guide sleeve 3, and the thin cylindrical section 4.2 is sealingly slidably arranged in the circular tube 2.2, and the guide groove 4.22 is always connected to the oil guide hole 2.21. The diameter of the conical head 4.21 is larger than the inner diameter of the oil drain hole 1.1 and is directly opposite the oil drain hole 1.1 from front to back.
[0034] The valve body further comprises a yoke 5 which is arranged in the guide tube 3 at the rear side of the valve core 4 and whose rear end is plugged and fixed in the insertion hole 8.1 provided at the rear bottom of the housing 8.
[0035] The valve body 1.2 is provided with a first spring hole in the rear end face of the valve core 4, and a second spring hole in the front end face of the yoke 5. The valve body 1.2 is provided with a first spring hole in the rear end face of the valve core 4, and a second spring hole in the front end face of the yoke 5. The valve body 1.2 is provided with a first spring hole in the rear end face of the valve core 4. The valve body 1.2 is provided with a first spring hole in the rear end face of the yoke 5. The first spring 6 is provided with a second spring hole in the front end face of the yoke 5. The first spring 6 is provided with a first spring hole in the rear end face of the valve core 4.
[0036] The valve body 1.2 further comprises a coil 7 which is sleeved around the outer periphery of the guide tube 3 and fixed to the connecting tube 2.4 via its front end. The coil 7 is configured to drive the valve core 4 to overcome the tension of the return spring 6 and the oil pressure resistance within the valve chamber 1.2 when energized, thereby retreating and opening the oil drain hole 1.1. This thereby connects the valve chamber 1.2 with the oil guide groove 4.22 and also connects the oil drain hole 1.1 with the valve chamber 1.2.
[0037] It also includes a shell 8, which is a front-open cylindrical body. The shell 8 is sleeved around the outer periphery of the coil 7 and is fixed to the disc 2.1 through its front opening.
[0038] like Figure 1 As shown, during normal oil supply, conical head 4.21, under the tension of return spring 6, blocks the inner opening of oil drain hole 1.1, closing the oil drain channel. High-pressure oil from the outside can enter through oil inlet 2.31 and be delivered to the working chamber of the suspension system via oil inlet chamber 9, oil guide hole 2.21, oil guide groove 4.22, valve chamber 1.2, and oil outlet 1.4. During oil supply, the high-pressure oil in valve chamber 1.2 acts on conical head 4.21, assisting return spring 6 in tightly fitting it to valve body 1, enhancing the sealing effect.
[0039] like Figure 5As shown, if the oil pressure in the oil supply channel is too high, the coil 7 is energized. The magnetic force generated by the coil 7 can drive the valve core 4 to overcome the resistance of the return spring 6 and the oil pressure in the valve chamber 1.2 and retreat. The retreat of the conical head 4.21 can quickly connect the valve chamber 1.2 and the oil drain hole 1.1. Part of the high-pressure oil flowing through the valve chamber 1.2 can be discharged through the oil drain hole 1.1 to achieve pressure relief.
Claims
1. A suspension solenoid valve, comprising a valve body (1), a valve sleeve (2), a guide sleeve (3), a valve core (4), a yoke (5), a return spring (6), a coil (7) and a housing (8), characterized in that: The valve body (1) is cylindrical and has an oil drain hole (1.1) centered on its front end surface, a control chamber (1.3) centered on its rear end surface, a valve chamber (1.2) linearly connected to the oil drain hole (1.1) and the control chamber (1.3) inside, and an oil outlet (1.4) linearly connected to the valve chamber (1.2) and the outside world on its side wall. The oil drain hole (1.1) is a circular hole, and the valve chamber (1.2) and the control chamber (1.3) are both circular chambers. The diameter of the oil drain hole (1.1) is smaller than the diameter of the valve chamber (1.2), and the diameter of the valve chamber (1.2) is smaller than the diameter of the control chamber (1.3). The valve sleeve (2) comprises a disc (2.1), a circular tube (2.2) vertically arranged at the center of the front disc surface of the disc (2.1), and a circular ring (2.3) arranged at a distance from the outer periphery of the circular tube (2.2). The disc (2.1) is provided with a central hole (2.11) which is linearly connected to the circular tube (2.2). The central hole (2.11) is a circular hole with a hole diameter larger than the inner diameter of the circular tube (2.2). The front end of the circular tube (2.2) is screwed and fixed to the outer side of the oil outlet (1.4). In the valve cavity (1.2), the circular ring (2.3) is connected to the control cavity (1.3), and the disc (2.1), the circular tube (2.2), the circular ring (2.3) and the valve body (1) are combined to form a closed oil inlet cavity (9); the wall of the circular tube (2.2) is radially provided with an oil guide hole (2.21) connecting the tube cavity and the oil inlet cavity (9); the wall of the circular ring (2.3) is radially provided with an oil inlet (2.31) connecting the oil inlet cavity (9) and the outside world; One end of the guide sleeve (3) is inserted and fixed in the center hole (2.11); The valve core (4) comprises a thick cylindrical section (4.1) and a thin cylindrical section (4.2) centrally arranged on the front end surface of the thick cylindrical section (4.1); a convex conical head (4.21) is provided at the front end of the thin cylindrical section (4.2); an inwardly concave oil guide groove (4.22) is provided on the outer wall of the thin cylindrical section (4.2) behind the conical head (4.21); the thick cylindrical section (4.1) is movably slidably arranged in the guide sleeve (3); the thin cylindrical section (4.2) is sealingly slidably arranged in the circular tube (2.2); the oil guide groove (4.22) is always connected to the oil guide hole (2.21); the diameter of the conical head (4.21) is larger than the inner diameter of the oil drain hole (1.1) and is directly opposite to the oil drain hole (1.1) from front to back; The yoke (5) is fixedly arranged in the guide sleeve (3) on the rear side of the valve core (4); A return spring (6) is arranged in the guide sleeve (3) and has two ends respectively supporting the valve core (4) and the yoke (5) to drive the valve core (4) forward so that the conical head (4.21) blocks the inner opening of the oil drain hole (1.1), thereby connecting the valve cavity (1.2) and the oil guide groove (4.22) while isolating the oil drain hole (1.1) and the valve cavity (1.2); The coil (7) is sleeved and fixed on the periphery of the guide sleeve (3) so as to drive the valve core (4) to overcome the tension of the return spring (6) and the resistance of the oil pressure and retreat to open the oil drain hole (1.1) after being energized, thereby connecting the valve cavity (1.2) and the oil guide groove (4.22) and also connecting the oil drain hole (1.1) and the valve cavity (1.2); The outer shell (8) is a front-open cylindrical body, which is sleeved on the outer periphery of the coil (7) and fixed to the disc (2.1) through its front opening.
2. The suspension solenoid valve according to claim 1, characterized in that: Four oil outlets (1.4) are provided and are evenly arranged around the peripheral wall of the valve body (1).
3. The suspension solenoid valve according to claim 1, characterized in that: The rear end of the yoke (5) is plugged and fixed in a plug hole (8.1) provided at the rear bottom of the shell (8).
4. The suspension solenoid valve according to claim 3, characterized in that: The front end of the reset spring (6) is inserted into a first spring hole provided on the rear end surface of the valve core (4), and the rear end is inserted into a second spring hole provided on the front end surface of the yoke (5).
5. The suspension solenoid valve according to claim 1, characterized in that: The guide sleeve (3) is a plastic round tube sleeve.
6. The suspension solenoid valve according to claim 1, characterized in that: There are two oil inlets (2.31) which are respectively arranged on the corresponding two sides of the ring (2.3).
7. The suspension solenoid valve according to claim 6, characterized in that: Two oil guide holes (2.21) are provided and are respectively arranged on the corresponding two sides of the circular tube (2.2).
8. The suspension solenoid valve according to claim 7, characterized in that: The two oil guide holes (2.21) and the two oil inlets (2.31) are located on the same plane.
9. A suspension solenoid valve according to claim 1 or 2, characterized in that: The outer walls of the valve body (1) at both sides of the oil outlet (1.4) are provided with sealing ring mounting grooves (1.5).
10. The suspension solenoid valve according to claim 1, characterized in that: A connecting pipe (2.4) communicating with the center hole (2.11) of the disc (2.1) is provided on the rear surface of the disc (2.1), and the front end of the coil (7) is sleeved and fixed on the connecting pipe (2.4).