Valve sleeve guiding type electromagnetic control valve

Abstract

The utility model discloses a valve sleeve guiding type electromagnetic control valve which comprises an electromagnetic valve shell. The coil assembly is arranged in the electromagnetic valve shell; the front yoke is arranged in the coil assembly, and the waist part of the front yoke is provided with an annular groove for fixing a sealing ring; and the outer wall of the extending part of the upper end of the valve sleeve is attached to the inner wall of the coil assembly, the upper end of the inner wall of the extending part of the upper end of the valve sleeve is attached to the front yoke and the sealing ring, and the lower end of the inner wall of the extending part of the upper end of the valve sleeve can guide a sliding pair. The valve core and the inner cover are not needed for guiding, the structure is compact, the weight is light, the control precision is high, the machining difficulty and cost are reduced, and the transmission efficiency and the assembly efficiency are improved.

Description

Technical Field

[0001] The utility model relates to an electromagnetic control valve used for controlling a cooling and lubricating system of a passenger car engine, in particular to a valve sleeve-guided electromagnetic control valve. Background Art

[0002] The current automotive industry is developing rapidly towards electrification, energy conservation, intelligence, and sharing. This development has put forward higher requirements for hydraulic automatic control technology. Solenoid control valves are used to control the flow and pressure of hydraulic oil circuits to achieve energy conservation and intelligence of the system. Solenoid control valves are the core components in oil circuit control, but some components of the current electromagnetic control valves are difficult to process, with low control accuracy and assembly efficiency, and high costs. Utility Model Content

[0003] The purpose of the utility model is to provide a valve sleeve guided electromagnetic control valve, which does not require a valve core and an inner cover, and is guided and controlled by the valve sleeve, so that the electromagnetic control valve has a compact structure, light weight, high precision, low cost and simple assembly process.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A valve sleeve-guided electromagnetic control valve comprises: a solenoid valve housing 12; a coil assembly 11 built into the solenoid valve housing 12; a front yoke 13 built into the coil assembly 11, the waist of the front yoke being provided with an annular groove for fixing a sealing ring 10; and a valve sleeve 4, the outer wall of an extension portion S of the valve sleeve upper end being in contact with the inner wall of the coil assembly 11, the upper end of the inner wall of the extension portion S of the valve sleeve upper end being in contact with the front yoke 13 and the sealing ring 10, and the lower end of the inner wall of the extension portion S of the valve sleeve upper end being able to guide the moving pair.

[0006] As a further solution of the present invention: the front yoke 13 is a solid columnar structure, and the upper end of the annular groove on the waist of the front yoke is provided with a step to avoid the extension portion S of the upper end of the valve sleeve.

[0007] As a further solution of the present invention: the lower end of the front yoke 13 is in a bell-mouth shape and is provided with a mounting hole for mounting the upper end of the spring 9.

[0008] As a further solution of the present invention: the moving pair is formed by the ejector pin 5 and the plunger 7 being fixedly connected.

[0009] As a further solution of the present invention, the ejector pin 5 and the plunger 7 are interference fit.

[0010] As a further solution of the present invention: a guide hole is provided at the lower end of the valve sleeve 4, and the ejector pin 5 passes through the guide hole.

[0011] As a further solution of the present invention: a steel ball 3 and a ball seat 2 are further provided inside the valve sleeve 4 , and there is line contact between the steel ball 3 and the ball seat 2 .

[0012] As a further solution of the present invention: the upper end of the plunger 7 is in a bell-mouth shape and is provided with a mounting hole for mounting the lower end of the spring 9.

[0013] As a further solution of the present invention: an oil inlet P is provided at the lower end of the valve sleeve 4 , and an oil inlet / outlet A, an oil outlet T and a sealing ring 6 are formed on the circumferential side.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a compact structure, light weight, high precision, and does not require a valve core and an inner cover, thereby reducing processing difficulty and cost and improving transmission efficiency and assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a cross-sectional view of the main structure of the utility model;

[0016] Figure 2 This is the overall appearance diagram of the utility model;

[0017] Figure 3 This is a partial enlarged view of the contact area between the steel ball and the ball seat in the utility model;

[0018] Figure 4 This is a schematic diagram of the external structure of the valve sleeve in the utility model;

[0019] In the figure: 1-filter; 2-ball seat; 3-steel ball; 4-valve sleeve; 5-thimble; 6-sealing ring; 7-plunger; 8-bracket; 9-spring; 10-sealing ring; 11-coil assembly; 12-solenoid valve housing; 13-front yoke; 14-rear yoke; P-oil inlet; T-oil outlet; A-oil inlet / outlet; S-upper extension of the valve sleeve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The utility model provides a valve sleeve guided electromagnetic control valve, such as Figure 2 As shown in the figure, the solenoid control valve is used in the cooling and lubrication system of passenger car engines, and the control medium is various types of lubricating oils.

[0022] like Figure 1 and Figure 4 As shown, the electromagnetic control valve in the embodiment of the present invention includes: a solenoid valve housing 12; a coil group 11 built into the solenoid valve housing 12; a front yoke 13 built into the coil group 11, and the waist of the front yoke is provided with an annular groove for fixing the sealing ring 10; and a valve sleeve 4, the outer wall of the upper extension S of the valve sleeve is in contact with the inner wall of the coil group 11, the upper end of the inner wall of the upper extension S of the valve sleeve is in contact with the front yoke 13 and the sealing ring 10, and the lower end of the inner wall of the upper extension S of the valve sleeve can guide the moving pair formed by the interference fit of the ejector pin 5 and the plunger 7.

[0023] The front yoke 13 is a solid columnar structure. The upper end of the annular groove in the waist of the front yoke, which is used to fix the sealing ring 10, has a step to avoid the upper extension S of the valve sleeve. In other words, the upper end of the valve sleeve upper extension S extends beyond the sealing ring 10. The lower end of the front yoke 13 is flared and has a mounting hole for the upper end of the spring 9.

[0024] The sealing ring 10 is interference-fitted with the extension portion S of the upper end of the valve sleeve to control the outflow of the medium when the electromagnetic control valve is working.

[0025] The utility model adopts a valve sleeve guide type, replacing the original inner cover guide, which greatly reduces the difficulty of machining the inner hole of the valve sleeve and saves costs. In addition, the plunger-thimble moving pair has the characteristics of high transmission efficiency and stable structure.

[0026] A guide hole is provided at the lower end of the valve sleeve 4 , through which the ejector pin 5 passes, thereby achieving a guiding effect on the ejector pin 5 .

[0027] There is line contact between the steel ball 3 and the ball seat 2, as shown in Figure 3 As shown, the surface contact between the original valve sleeve and the valve core is replaced, thereby reducing the contact area, so that the electromagnetic control valve of this embodiment improves the control accuracy and shortens the response time.

[0028] The upper end of the plunger 7 is in a bell-mouth shape and is provided with a mounting hole for mounting the lower end of the spring 9. Both the front yoke 13 and the plunger 7 are designed with a bell-mouth structure to achieve stable movement of the plunger 7 and rapid control of the oil channel.

[0029] An oil inlet P is provided at the bottom of the valve sleeve 4, and an oil inlet / outlet A and an oil outlet T as well as a sealing ring 6 are formed on the peripheral side. The A port of the valve sleeve 4 can be used as both an oil inlet and an oil outlet, so that the electromagnetic control valve of this embodiment can meet the usage requirements of different scenarios.

[0030] The various components of the electromagnetic control valve in the embodiment of the present utility model adopt different processes during the production process. For example, the valve sleeve 4, the rear yoke iron 14, and the front yoke iron 13 are machined; the spring 9, the steel ball 3, and the ejector pin 5 are molded; the coil assembly 11 is injection-molded with the coil and the terminal as a whole; the plunger 7 and the ball seat 2 are formed by powder metallurgy; the solenoid valve housing 12 is stamped and rolled, and the surface is electroplated with blue-white zinc, which has strong corrosion resistance; the filter screen 1 is etched, and the sealing ring 10 and the sealing ring 6 are injection-molded.

[0031] When the embodiment of the present invention is used, when the electromagnetic control valve is energized, the electromagnetic coil 11 generates an electromagnetic force to attract the plunger 7, thereby compressing the spring 9 and driving the ejector pin 5 away from the steel ball. At this time, the passage from port P to port A is opened, the passage from port A to port T is closed, and the electromagnetic valve is open to oil. When the electromagnetic control valve is de-energized, the electromagnetic force disappears, the spring 9 pushes the plunger 7 open, the ejector pin 5 presses on the steel ball 3, the P port is re-sealed, the passage from port P to port A is closed, the passage from port A to port T is opened, and the electromagnetic valve is cut off from oil. The electromagnetic control valve of the present invention has the characteristics of being lightweight, miniaturized, highly precise, low-cost, and well-sealed. It can be applied to the high-frequency vibration environment of the engine. At the same time, the electromagnetic control valve can quickly control the oil channel, thereby improving control efficiency.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A valve sleeve guided electromagnetic control valve, characterized in that: include: Solenoid valve housing (12); a coil assembly (11) built into the solenoid valve housing (12); A front yoke (13) built into the coil assembly (11), wherein the waist of the front yoke is provided with an annular groove for fixing the sealing ring (10); And a valve sleeve (4), the outer wall of the upper extension part (S) of the valve sleeve is in contact with the inner wall of the coil assembly (11), the upper end of the inner wall of the upper extension part (S) of the valve sleeve is in contact with the front yoke (13) and the sealing ring (10), and the lower end of the inner wall of the upper extension part (S) of the valve sleeve can guide the moving pair.

2. The electromagnetic control valve according to claim 1, characterized in that: The front yoke (13) is a solid columnar structure, and the upper end of the annular groove on the waist of the front yoke is provided with a step to avoid the upper end extension portion (S) of the valve sleeve.

3. The electromagnetic control valve according to claim 1, characterized in that: The lower end of the front yoke (13) is in a bell-mouth shape and is provided with a mounting hole for mounting the upper end of the spring (9).

4. The electromagnetic control valve according to claim 1, characterized in that The moving pair is formed by a thimble (5) and a plunger (7) being fixedly connected.

5. The electromagnetic control valve according to claim 4, characterized in that: The ejector pin (5) and the plunger (7) are interference fit.

6. The electromagnetic control valve according to claim 1, characterized in that A guide hole is provided at the lower end of the valve sleeve (4), and the ejector pin (5) passes through the guide hole.

7. The electromagnetic control valve according to claim 1, characterized in that: A steel ball (3) and a ball seat (2) are further provided inside the valve sleeve (4), and the steel ball (3) and the ball seat (2) are in line contact.

8. The electromagnetic control valve according to claim 4, characterized in that: The upper end of the plunger (7) is in a bell-mouth shape and is provided with a mounting hole for mounting the lower end of the spring (9).

9. The electromagnetic control valve according to claim 1, characterized in that: The lower end of the valve sleeve (4) is provided with an oil inlet (P), and the peripheral side is formed with an oil inlet / outlet port (A), an oil outlet port (T) and a sealing ring (6).

Images