Solenoid valve detachable structure of external electric control shock absorber

Abstract

An electromagnetic valve detachable structure of an external electric control shock absorber comprises a hydraulic cylinder, an electromagnetic valve seat and an electromagnetic valve, the electromagnetic valve seat is welded to an outer cylinder of the hydraulic cylinder, an installation flange is arranged at the opening end of the electromagnetic valve seat, at least two threaded holes are formed in the installation flange, the electromagnetic valve is installed in the electromagnetic valve seat in a threaded fit mode, and the electromagnetic valve is connected with the hydraulic cylinder. A coil assembly of the electromagnetic valve extends out of the opening end of the electromagnetic valve seat, the installation flange is connected with a gland through a bolt, a receding hole allowing the coil assembly of the electromagnetic valve to penetrate through is formed in the middle of the gland, and extending parts at the two ends of the gland are each provided with a through hole corresponding to the threaded hole. A receding opening used for wiring of an electromagnetic valve coil assembly is formed in the front end of the receding hole.

Description

Technical Field

[0001] The utility model relates to the field of automotive shock absorbers, and particularly to a detachable structure of an electromagnetic valve for an external electric control shock absorber. Background Art

[0002] Automotive shock absorbers are often connected between the suspension and the vehicle body, and the reciprocating movement of the piston rod is used to eliminate the bumps and vibrations of the vehicle during driving. Its working principle is as follows: when the wheel jumps upward relative to the vehicle body, the piston rod makes a compression movement, and the oil in the working cylinder flows from the lower chamber of the piston into the upper chamber, generating a compression damping force; when the wheel jumps downward relative to the vehicle body, the piston rod makes a recovery movement, and the oil in the working cylinder flows from the upper chamber of the piston into the lower chamber, generating a recovery damping force. For traditional passive shock absorbers, their damping force is determined under a certain specific working condition and cannot meet the higher requirements of current automobiles for comfort and controllability. Therefore, more and more automobiles adopt semi-active shock absorbers with adjustable damping. The semi-active shock absorber usually adopts an electric control form, adding an electromagnetic valve device and a corresponding oil circuit structure to the passive shock absorber structure. By controlling the opening degree of the electromagnetic valve with current, the flow rate of the oil is changed, thereby changing the damping force of the shock absorber to meet different driving requirements. According to the position of the electromagnetic valve structure, the electric control shock absorber is divided into an external electric control shock absorber and an internal electric control shock absorber. Among them, the external electric control shock absorber has a simple structure, a large adjustable damping range, and a rapid response, and is widely used in various vehicle models.

[0003] During the development and design of the electric control shock absorber, performance tuning and vehicle integration are indispensable. During tuning, not only the basic valve system needs to be debugged, but also the electromagnetic valve needs to be debugged. Therefore, the electromagnetic valve needs to be frequently replaced. The patent document with the publication number of CN 211737851 U discloses an electric control shock absorber. The electromagnetic valve of this electric control shock absorber is installed on the outer wall of the shock absorber oil storage cylinder by riveting or clamping. If you want to disassemble it, you need to destroy the riveting or clamping structure, which cannot be restored, resulting in the failure of the shock absorber. Summary of the Invention

[0004] The purpose of the utility model is to provide a detachable structure of an electromagnetic valve for an external electric control shock absorber in view of the corresponding deficiencies of the prior art. This detachable structure of the electromagnetic valve is convenient to process, has a simple structure, can realize the rapid installation and disassembly of the electromagnetic valve, is convenient for the matching and tuning of the performance of the electromagnetic valve, and has an auxiliary effect on the tuning of the vehicle chassis.

[0005] The object of the present utility model is achieved by the following solution: A detachable structure of an electromagnetic valve for an external electro-hydraulic shock absorber, comprising a hydraulic cylinder, an electromagnetic valve seat, and an electromagnetic valve. The electromagnetic valve seat is welded to the outer cylinder of the hydraulic cylinder. An installation flange is provided at the open end of the electromagnetic valve seat. At least two threaded holes are provided on the installation flange. The electromagnetic valve is installed in the electromagnetic valve seat by threaded fit. The coil assembly of the electromagnetic valve extends out of the open end of the electromagnetic valve seat. The installation flange is connected to a gland by bolts. A relief hole for the coil assembly to pass through is provided in the middle of the gland. Through holes corresponding to the threaded holes are respectively provided on the extending parts at both ends of the gland. A relief opening for wiring the coil assembly is provided at the front end of the relief hole.

[0006] A dust-proof ring is provided between the gland and the coil assembly.

[0007] The installation flange is in an olive shape with smaller ends and a larger middle.

[0008] The advantages of the present utility model are that the detachable structure of the electromagnetic valve of this external electro-hydraulic shock absorber is convenient to process, has a simple structure, is convenient to install, can realize the free disassembly and assembly of the electromagnetic valve without affecting the normal use of the shock absorber, and is of great significance to the overall vehicle tuning and the performance debugging of the electro-hydraulic shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic structural view of the present utility model;

[0010] Figure 2 is a top view of the present utility model;

[0011] Figure 3 is a schematic structural view of the gland in the present utility model;

[0012] Figure 4 is Figure 3 a sectional view taken along the E-E direction of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] As Figures 1 to 4 shown, a detachable structure of an electromagnetic valve for an external electro-hydraulic shock absorber, comprising a hydraulic cylinder, an electromagnetic valve seat 2, and an electromagnetic valve 3. The electromagnetic valve seat 2 is welded to the outer cylinder 1 of the hydraulic cylinder. An installation flange 8 is provided at the open end of the electromagnetic valve seat 2. The installation flange 8 is in an olive shape with smaller ends and a larger middle. At least two threaded holes are provided on the installation flange 8. The electromagnetic valve 3 is installed in the electromagnetic valve seat 2 by threaded fit. The coil assembly 6 of the electromagnetic valve 3 extends out of the open end of the electromagnetic valve seat 2. The installation flange 8 is connected to a gland 5 by bolts 4. A relief hole 5b for the coil assembly 6 to pass through is provided in the middle of the gland 5. Through holes 5a corresponding to the threaded holes are respectively provided on the extending parts at both ends of the gland 5. A relief opening 5c for wiring the coil assembly 6 is provided at the front end of the relief hole 5b. A dust-proof ring 7 is provided between the gland 5 and the coil assembly 6.

[0014] When assembling the solenoid valve, first tighten the solenoid valve in the solenoid valve seat with a special tooling, then put on the coil assembly, then place the dust ring on the coil assembly and fasten it with a gland, and tighten after installing the bolts into the gland and the mounting flange. In this way, it can be ensured that the solenoid valve and the coil assembly will not fall off. When it is necessary to disassemble the solenoid valve, first remove the bolts, then remove the dust ring and the coil assembly, and finally screw out the solenoid valve with a special tooling.

[0015] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications made to the present invention by those skilled in the art without departing from the spirit of the present invention fall within the protection scope of the present invention.

Claims

1. A detachable solenoid valve structure of an external electronically controlled shock absorber, comprising a hydraulic cylinder, a solenoid valve seat (2), and a solenoid valve (3), characterized in that: The solenoid valve seat (2) is welded to the outer cylinder (1) of the hydraulic cylinder. A mounting flange (8) is provided at the open end of the solenoid valve seat (2). The mounting flange (8) is provided with at least two threaded holes. The solenoid valve (3) is installed in the solenoid valve seat (2) by threaded engagement. The coil assembly (6) of the solenoid valve (3) extends out of the open end of the solenoid valve seat (2). The mounting flange (8) is connected to a gland (5) by bolts (4). A clearance hole (5b) for the coil assembly (6) to pass through is provided in the middle of the gland (5). A through hole (5a) corresponding to the threaded hole is provided on the extension parts at both ends of the gland (5). A clearance opening (5c) for wiring the coil assembly (6) is provided at the front end of the clearance hole (5b).

2. The detachable solenoid valve structure of the external electronically controlled shock absorber according to claim 1 is characterized in that: A dustproof ring (7) is provided between the gland (5) and the coil assembly (6).

3. The detachable solenoid valve structure of the external electronically controlled shock absorber according to claim 1 is characterized in that: The mounting flange (8) is olive-shaped with small ends and a large middle.

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