Proportional valve of dual-mode shock absorber

Abstract

The utility model provides a proportional valve of a dual-mode shock absorber, and belongs to the technical field of automobile accessories. The problem that an existing shock absorber electromagnetic valve is not wide in application range is solved. And the like. The dual-mode shock absorber proportional valve comprises a valve body, an end cover, a static iron core, a movable iron core and a coil assembly, a cylindrical mounting cylinder axially penetrates through the valve body, the coil assembly is arranged between the mounting cylinder and the valve body, a radial through hole communicated with an annular groove radially penetrates through the mounting cylinder, and a sealing ring is arranged between the front end of the mounting cylinder and a retaining shoulder arranged on the inner wall of the valve body. The static iron core is located between the end cover and the installation cylinder and provided with an extending-in part extending into the installation cylinder, the movable iron core is located in the installation cylinder, the outer wall of the movable iron core is sealed to the inner wall of the installation cylinder, and the spring is located between the static iron core and the movable iron core and provides elastic force so that the movable iron core can be sealed to the sealing ring. The movable iron core is provided with an axial through hole which axially penetrates through and is communicated with the axial hole. The device has the advantages of wide application range, good working stability and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile parts, and relates to a proportional valve, in particular to a double-mode shock absorber proportional valve. BACKGROUND

[0002] With the continuous improvement of the requirements of people on the controllability and comfort of vehicles, the shock absorber for vehicles is progressing from the traditional mechanical mode to the electric control and electromagnetic direction. At present, the shock absorber that meets the controllability and comfort has the following four modes: 1, one-way two-damping hydraulic shock absorber; 2, CDC variable damping hydraulic shock absorber; 3, magnetorheological electromagnetic hydraulic shock absorber; 4, linear execution cylinder shock absorber. Among them, the CDC variable damping hydraulic shock absorber has a higher cost, is suitable for relatively high-grade vehicles, the magnetorheological current hydraulic shock absorber cannot solve the cost and service life problems of magnetorheological fluid at the present stage, cannot be used in batches at present, the linear execution cylinder shock absorber is limited by insufficient unit power density and cannot be popularized, and the problem of power density needs to be solved.

[0003] Therefore, the one-way two-damping hydraulic shock absorber is basically adopted on domestic vehicles, and the electromagnetic valve structure thereof is as shown in the drawing, Figure 1 which comprises a shell, a moving iron core, a spring and a static iron core, the spring provides elastic force to make the moving iron core keep the tendency of abutting against the taper surface of the inner wall of the shell. The one-way two-damping hydraulic shock absorber electromagnetic valve corresponds to two kinds of hydraulic dampings through two states of the switch, so as to match the driving requirements of the vehicle. In this way, the hydraulic damping cannot be continuously changed, the application range is not wide enough, the performance matching effect is not ideal, and when the shell axially enters oil, high-pressure oil acts on the moving iron core, so that the spring is disabled and cannot be opened. When the shell radially enters oil, because the taper surface exists, the high-pressure oil can overcome the elastic force of the spring and open the moving iron core, and the working stability is not ideal. In addition, the machining precision of each part is high, and the machining difficulty is great. SUMMARY

[0004] The utility model discloses a kind of double-mode shock absorber proportional valve, which is suitable for the above problems existing in prior art, and has wide application range, stable working and is convenient for processing.

[0005] The utility model discloses a double mode damper proportional valve can be realized through the following technical schemes: a double mode damper proportional valve, including valve body, end cover, static core, moving core and coil assembly, the axial hole of valve body's front end is opened, and the outer wall of valve body is close to the radial hole of front end and the annular recess of valve inner wall has the communication in the inner end of radial hole, and the end cover is fixedly connected in the rear end of valve body, and its characterized in that, the valve body is axially worn and is set up the installation cylinder of the cylinder, and the coil assembly is arranged between the installation cylinder and the valve body, and the radial through -hole of installation cylinder is communicated with the annular recess, and the front end of installation cylinder and the inner wall of valve body have the stop shoulder between the sealing ring, and the static core is located between the end cover and the installation cylinder and has the extension of the installation cylinder in the extension part, and the moving core is located in the installation cylinder and the outer wall of moving core is sealed to the inner wall of installation cylinder, and the spring is located between the static core and the moving core and provides the elastic force to make the moving core sealed to the sealing ring, and the moving core has the axial through -hole that is communicated with the axial hole.

[0006] In the above-mentioned double mode damper proportional valve, the static core is embedded with a magnetic isolation ring, one end of the spring abuts against the magnetic isolation ring, and the other end of the spring extends into the moving core and abuts against the step on the inner wall of the moving core.

[0007] In the above-mentioned double mode damper proportional valve, the coil assembly includes a wire frame and a coil, the wire frame is sleeved on the outer side of the installation cylinder, both ends of the wire frame have radially outwardly protruding beads, the coil is wound on the wire frame and located between the two beads, the front end of the wire frame abuts against the inner wall of the valve body, and the rear end of the wire frame abuts against the static core.

[0008] In the above-mentioned double mode damper proportional valve, the valve body is embedded with a sealing ring one sealed to the front end of the wire frame, and the outer wall of the static core is embedded with a sealing ring two sealed to the inner wall of the installation cylinder.

[0009] In the above-mentioned double mode damper proportional valve, the end cover is threadedly connected with the valve body through external threads, and a sealing ring three is arranged between the end cover and the valve body.

[0010] Compared with the prior art, the double mode damper proportional valve has compact and stable structure, good working stability, small processing difficulty, convenient processing, continuous change of hydraulic damping, wide application range. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is the structure sectional view of the existing one-way two-damping hydraulic shock absorber electromagnetic valve.

[0012] Figure 2 is the structure sectional view of the double mode damper proportional valve.

[0013] In the diagram, 1. Valve body; 11. Axial hole; 12. Radial hole; 13. Annular groove; 14. Sealing ring one; 2. End cap; 3. Stationary iron core; 31. Sealing ring two; 4. Moving iron core; 41. Axial through hole; 5. Mounting cylinder; 51. Radial through hole; 6. Sealing ring; 7. Magnetic shielding ring; 8. Wire frame; 81. Raised ring; 9. Coil; 10. Sealing ring three. Detailed Implementation

[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0015] like Figure 2 As shown, the proportional valve of this dual-mode shock absorber includes a valve body 1, an end cap 2, a stationary iron core 3, a moving iron core 4, and a coil assembly. An axial hole 11 is axially formed at the front end of the valve body 1. A radial hole 12 is radially passed through the outer wall of the valve body 1 near the front end, and an annular groove 13 communicating with the inner end of the radial hole 12 is located on the inner wall of the valve body 1. The end cap 2 is fixedly connected to the rear end of the valve body 1. A cylindrical mounting cylinder 5 is axially inserted through the valve body 1. The coil assembly is located between the mounting cylinder 5 and the valve body 1. The mounting cylinder 5 is radially passed through and communicates with the annular groove. A sealing ring 6 is provided between the front end of the mounting cylinder 5 and the shoulder of the inner wall of the valve body 1 in the radial through hole 51 of 13. The stationary iron core 3 is located between the end cover 2 and the mounting cylinder 5 and has an extension part that extends into the mounting cylinder 5. The moving iron core 4 is located inside the mounting cylinder 5 and the outer wall of the moving iron core 4 is sealed to the inner wall of the mounting cylinder 5. The spring is located between the stationary iron core 3 and the moving iron core 4 and provides elastic force so that the moving iron core 4 is sealed to the sealing ring 6. The moving iron core 4 has an axial through hole 41 that is axially through and connected to the axial hole 11.

[0016] The sealing ring 6 in the double-mode shock absorber proportional valve is used for abutting against the mounting cylinder 5, has a deformation amount, can compensate the machining tolerance of the valve body 1 and the mounting cylinder 5, can reduce the requirement for machining precision, and is convenient to machine. When the double-mode shock absorber proportional valve is not powered, the spring force makes the moving iron core 4 abut against the sealing ring 6, the radial through hole 51 is communicated with the radial hole 12 and the annular groove 13, the moving iron core 4 plays a separation role, the radial through hole 51 cannot be communicated with the axial hole 11, there is no situation that the radial hole 12 side hydraulic impact opens the moving iron core 4, the hydraulic oil in the axial hole 11 passes through the axial through hole 41 and is filled between the moving iron core 4 and the static iron core 3, the moving iron core 4 has no additional hydraulic force, the hydraulic oil in the axial hole 11 cannot open the moving iron core 4, and the double-mode shock absorber proportional valve has good working stability; when the double-mode shock absorber proportional valve is powered, the moving iron core 4 can overcome the spring force and the friction force, has good working stability, the moving iron core 4 is axially displaced to the static iron core 3 side, the radial hole 12, the annular groove 13, the radial through hole 51 and the axial hole 11 are all communicated, so that the hydraulic dampings on both sides of the radial hole 12 and the axial hole 11 are changed, the current size is changed in the use process, the displacement amount of the moving iron core 4 to the static iron core 3 is changed in proportion, so that the opening size between the moving iron core 4 and the sealing ring 6 is changed, the purpose of continuously changing the hydraulic damping is achieved, and the application range is wide.

[0017] Further, the static iron core 3 is embedded with the magnetic isolation ring 7, one end of the spring abuts against the magnetic isolation ring 7, and the other end of the spring extends into the moving iron core 4 and abuts against the step on the inner wall of the moving iron core 4. The magnetic isolation ring 7 reduces the delay, improves the dynamic response speed, and improves the working stability.

[0018] The coil assembly includes the bobbin 8 and the coil 9, the bobbin 8 is sleeved on the outer side of the mounting cylinder 5, both ends of the bobbin 8 are provided with the radial outward convex beads 81, the coil 9 is wound on the bobbin 8 and located between the two beads 81, the front end of the bobbin 8 abuts against the inner wall of the valve body 1, and the rear end of the bobbin 8 abuts against the static iron core 3. In this way, the structure is compact and stable, and the working stability is good.

[0019] The valve body 1 is embedded with the sealing ring one 14 which is sealed to the front end of the bobbin 8, and the outer wall of the static iron core 3 is embedded with the sealing ring two 31 which is sealed to the inner wall of the mounting cylinder 5, so that the sealing property is good, and the service life is long. The end cover 2 is threadedly connected with the valve body 1 through external threads, and the sealing ring three 10 is arranged between the end cover 2 and the valve body 1, so that the connection is convenient and the sealing property is good.

[0020] The contents not described in detail in the specification belong to the prior art known by the person skilled in the art. The specific embodiments described in the specification are only illustrative of the spirit of the utility model. The person skilled in the art to which the utility model belongs can make various modifications or supplements to the specific embodiments described or adopt similar ways to replace, but will not deviate from the spirit of the utility model or exceed the range defined by the appended claims.

Claims

1. A dual-mode shock absorber proportional valve, comprising a valve body (1), an end cap (2), a stationary iron core (3), a moving iron core (4), and a coil assembly, wherein the valve body (1) has an axial hole (11) axially opened at its front end, a radial hole (12) radially penetrates the outer wall of the valve body (1) near its front end, and the inner wall of the valve body (1) has an annular groove (13) communicating with the inner end of the radial hole (12), and the end cap (2) is fixedly connected to the rear end of the valve body (1), characterized in that, The valve body (1) is axially provided with a cylindrical mounting cylinder (5). The coil assembly is located between the mounting cylinder (5) and the valve body (1). The mounting cylinder (5) is radially provided with a radial through hole (51) communicating with the annular groove (13). A sealing ring (6) is provided between the front end of the mounting cylinder (5) and the shoulder of the inner wall of the valve body (1). The stationary iron core (3) is located between the end cap (2) and the mounting cylinder (5) and the stationary iron core (3) has an extension portion extending into the mounting cylinder (5). The moving iron core (4) is located inside the mounting cylinder (5) and the outer wall of the moving iron core (4) is sealed to the inner wall of the mounting cylinder (5). A spring is located between the stationary iron core (3) and the moving iron core (4) and provides elastic force so that the moving iron core (4) is sealed to the sealing ring (6). The moving iron core (4) has an axial through hole (41) that is axially connected to the axial hole (11).

2. The dual-mode shock absorber proportional valve according to claim 1, characterized in that, The stationary iron core (3) is fitted with a magnetic shielding ring (7), one end of the spring abuts against the magnetic shielding ring (7), and the other end of the spring extends into the moving iron core (4) and abuts against the step on the inner wall of the moving iron core (4).

3. A dual-mode shock absorber proportional valve according to claim 1 or 2, characterized in that, The coil assembly includes a wire frame (8) and a coil (9). The wire frame (8) is fitted around the outside of the mounting cylinder (5). Both ends of the wire frame (8) have radially outward protruding rings (81). The coil (9) is wound on the wire frame (8) and located between the two protruding rings (81). The front end of the wire frame (8) abuts against the inner wall of the valve body (1), and the rear end of the wire frame (8) abuts against the stationary iron core (3).

4. The dual-mode shock absorber proportional valve according to claim 3, characterized in that, The valve body (1) is fitted with a sealing ring one (14) that seals the front end of the wire frame (8), and the outer wall of the stationary iron core (3) is fitted with a sealing ring two (31) that seals the inner wall of the mounting cylinder (5).

5. A dual-mode shock absorber proportional valve according to claim 4, characterized in that, The end cap (2) is threaded to the valve body (1) via an external thread, and a sealing ring (10) is provided between the end cap (2) and the valve body (1).

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