Electromagnetic control switch valve for hybrid transmission driving system

Abstract

The utility model discloses an electromagnetic control switch valve for a hybrid transmission driving system, which comprises a mounting component, the mounting component comprises a valve body, a cavity is formed in the valve body, the valve body forms a flowing channel for lubricating oil to flow, and the flowing channel flows through the cavity; and the switch assembly is arranged in the cavity and comprises a movable iron core moving along the radial inner side face of the valve body, one end of the movable iron core makes line contact with the radial inner side face of the valve body, and the line contact intersects with the flowing channel. According to the utility model, the bottom end of the movable iron core and the radial inner side surface of the valve body are provided with the inclined surfaces with different angles, so that the bottom end of the movable iron core and the radial inner side surface of the valve body are intersected at the sealing line, and the oil inlet hole and the oil outlet hole are separated; by arranging the sealing line, the sealing effect of the movable iron core and the valve body can be improved and the machining cost can be reduced without adjusting the distance between the movable iron core and the side face of the valve body and the machining precision of the radial side face of the movable iron core and the radial inner side face of the valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of hybrid vehicles, and in particular to an electromagnetic control switch valve for a hybrid transmission drive system. Background Art

[0002] With the development of the automotive industry, hybrid vehicles are increasingly popular among consumers. Hybrid transmissions, as a key component of hybrid vehicles, directly determine their performance. Hybrid transmissions, especially highly integrated ones (with integrated drive motors), place increasingly stringent requirements on lubrication and cooling. Using solenoid control valves to control hydraulic flow and pressure to achieve automated and intelligent control of lubrication and cooling systems is an increasingly popular research area. Solenoid valves are a core component, placing high demands on materials, structure, and process.

[0003] When implementing the electromagnetic control switching valve of the existing hybrid transmission, the inventors of the present application found that the valve core moves along the valve sleeve to realize the switching of the fluid channel, wherein the radial outer side surface of the valve core and the radial inner side surface of the valve sleeve are slidably connected, and there must be a gap between the two, thereby reducing the sealing effect of the solenoid valve. Utility Model Content

[0004] In order to improve the sealing effect of the solenoid valve, the utility model provides an electromagnetic control switch valve for a hybrid transmission drive system. The specific technical solution is as follows:

[0005] An electromagnetically controlled switching valve for a hybrid transmission drive system comprises: a mounting assembly, the mounting assembly including a valve body, the interior of the valve body forming a cavity, the valve body forming a flow channel for the flow of lubricating oil, the flow channel flowing through the cavity; and a switching assembly disposed in the cavity, the switching assembly including a moving iron core that moves along the radial inner side surface of the valve body, one end of the moving iron core being in line contact with the radial inner side surface of the valve body, and the line contact intersecting with the flow channel.

[0006] Furthermore, a slope A is formed on the side of one end of the moving iron core close to the flow channel, and a slope B is formed at the position where the radial inner side of the valve body contacts the moving iron core. The inclination angle α of the slope A is 45°-55°, and the inclination angle β of the slope B is α+5°.

[0007] Preferably, the inclined surface A intersects the inclined surface B at a sealing line, which is capable of closing the flow channel.

[0008] Preferably, the mounting assembly further includes: an oil inlet hole passing through the side of the valve body, the axis of the oil inlet hole being perpendicular to the axis of the valve body, and the oil inlet hole intersecting with the cavity; and an oil outlet hole passing through the bottom end of the valve body, the oil outlet hole intersecting with the cavity, and the oil inlet hole forming a flow channel through the cavity and the oil outlet hole.

[0009] Preferably, the mounting assembly further comprises an inner ring groove formed on the radial inner side surface of the cavity, the inner ring groove coincides with the axis of the oil inlet hole, and the diameter of the inner ring groove is greater than the diameter of the oil inlet hole.

[0010] Preferably, the switch assembly comprises a coil, a coaxial fixed iron core is provided at the top end of the coil, the fixed iron core is coaxial with the moving iron core, and compression springs are provided on opposite end surfaces of the fixed iron core and the moving iron core.

[0011] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0012] The utility model arranges inclined surfaces with different angles at the bottom end of the moving iron core and the radial inner side surface of the valve body, so that the bottom end of the moving iron core and the radial inner side surface of the valve body intersect at a sealing line, thereby separating the oil inlet and the oil outlet. By setting the sealing line, the sealing effect of the moving iron core and the valve body can be improved without adjusting the side distance between the moving iron core and the valve body and the processing accuracy of the radial side surface of the moving iron core and the radial inner side surface of the valve body, thereby reducing processing costs and improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of an embodiment of the utility model;

[0014] Figure 2 for Figure 1 Partial cross-sectional view.

[0015] In the figure: 1. Mounting assembly; 2. Switch assembly; 11. Housing; 12. Valve body; 13. Cavity; 14. Flow channel; 15. Oil inlet hole; 16. Oil outlet hole; 17. Inner ring groove; 21. Coil; 22. Fixed iron core; 23. Moving iron core; 24. Sealing wire; 25. Compression spring. DETAILED DESCRIPTION

[0016] 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.

[0017] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0018] like Figure 1 As shown, an embodiment of the utility model includes: a mounting assembly 1, which includes a valve body 12, a cavity 13 formed inside the valve body 12, and a flow channel 14 formed in the valve body 12 for the flow of lubricating oil, and the flow channel 14 flows through the cavity 13; and a switch assembly 2 arranged in the cavity 13, the switch assembly 2 includes a moving iron core 23 that moves along the radial inner side surface of the valve body 12, and one end of the moving iron core 23 is in line contact with the radial inner side surface of the valve body 12, and the line contact intersects with the flow channel 14.

[0019] Specifically, the mounting assembly 1 is used to support and fix the switch assembly 2, wherein a cylindrical cavity 13 is formed inside the valve body 12, and the radial inner side surface of the cylindrical cavity 13 is slidably connected to the radial outer side surface of the moving iron core 23, wherein the side and bottom of the valve body 12 both have through holes for the flow of lubricating oil, and the lubricating oil enters the cylindrical cavity 13 through the through holes and then flows out from the through holes to form its flow channel 14. The moving iron core 23 moves toward its bottom end along the radial inner side surface of the cylindrical cavity 13 under the action of electromagnetic induction. At the end of its stroke, that is, at a certain point in the flow channel 14, the bottom end of the moving iron core 23 is blocked by the valve body 12. The radial inner surface limits the movement, so that the bottom end of the moving iron core 23 cuts off the flow channel 14, so that the moving iron core 23 can realize the switching of the flow channel 14, wherein the contact between the two is line contact, and the surface contact between the moving iron core 23 and the valve body 12 in the existing solenoid valve is changed to line contact, so that the gap that inevitably exists between the moving iron core 23 and the side of the valve body 12 in the existing solenoid valve is eliminated without affecting the movement of the moving iron core 23, so that the sealing effect of the contact area is excellent, and thus the sealing effect of this embodiment can be improved without changing the distance between the radial outer surface of the moving iron core 23 and the radial inner surface of the valve body 12.

[0020] like Figure 2 As shown, a slope A is formed on the side of one end of the movable iron core 23 close to the flow channel 14, and a slope B is formed at the position where the radial inner side surface of the valve body 12 contacts the movable iron core 23. The inclination angle α of the slope A is 45°-55°, and the inclination angle β of the slope B is α+5°.

[0021] Specifically, bevel A is located at the intersection of the bottom end surface and the side surface of the movable iron core 23, and bevel B is located at the position of the valve body 12 that restricts the movement of the movable iron core 23. This ensures that when the movable iron core 23 moves along the radially inner side surface of the valve body 12, bevel A and bevel B do not contact each other until the movable iron core 23 reaches the end of its stroke, at which point bevel A intersects with bevel B. Where β = α + 5°, bevel A and bevel B intersect at a line, and the intersection line is located close to the flow channel 14. After the lubricating oil enters the flow channel 14, bevel A and bevel B can achieve an excellent sealing effect, and the lubricating oil will not enter the gap between bevel A and bevel B. Therefore, the external high-pressure lubricating oil will not exert a force on bevel A that is not equal to that of bevel B, thereby ensuring the sealing effect.

[0022] Among them, when α<45°, the horizontal component of the supporting force applied by slope B to slope A is reduced, so that the pressure applied by the external high-pressure lubricating oil on the side of the moving iron core 23 through the flow channel 14 is greater than the horizontal component, and the lubricating oil pushes the side of the moving iron core 23 to one side, so that the slope A and the slope B cannot intersect in the flow channel 14, causing leakage, and reducing the sealing effect of this embodiment; when α>55°, the vertical component of the supporting force applied by slope B to slope A is reduced, so that the supporting effect of slope B on slope A is reduced, and the limiting ability of the valve body 12 on the moving iron core 23 is reduced, thereby reducing the sealing effect of the annular line where the moving iron core 23 and the valve body 12 intersect.

[0023] Furthermore, the inclined surface A and the inclined surface B intersect at a sealing line 24 , and the sealing line 24 can close the flow channel 14 .

[0024] Specifically, the annular line where the inclined plane A intersects the inclined plane B is the sealing line 24. The sealing line 24 is an annular line used to intersect with the flow channel 14. When the sealing line 24 appears, the moving iron core 23 and the valve body 12 form a sealing structure to cut off the flow channel 14 and achieve sealing; wherein, the center of the sealing line 24 intersects with the axis of the valve body 12 and the moving iron core 23, so that its sealing range covers the edge of the bottom end face of the moving iron core 23, thereby improving the sealing effect in all directions.

[0025] Furthermore, the mounting assembly 1 also includes: an oil inlet hole 15 passing through the side of the valve body 12, the axis of the oil inlet hole 15 is perpendicular to the axis of the valve body 12, and the oil inlet hole 15 intersects with the cavity 13; and an oil outlet hole 16 passing through the bottom end of the valve body 12, the oil outlet hole 16 intersects with the cavity 13, and the oil inlet hole 15 forms a flow channel 14 through the cavity 13 and the oil outlet hole 16.

[0026] Specifically, an oil inlet 15 is formed on the side wall of the valve body 12, and the oil inlet 15 is perpendicular to the axis of the valve body 12. The oil inlet 15 intersects with the radial inner side of the valve body 12 at the sealing line 24, so that the sealing line 24 is perpendicular to the axis of the valve body 12, and the radial cross-section of the inclined surface B is perpendicular to the radial inner side of the valve body 12, and the radial outer side of the moving iron core 23 is parallel to the radial inner side of the valve body 12, so that the radial cross-section of the inclined surface B is parallel to the radial cross-section of the inclined surface A, and the sealing line 24 is perpendicular to the axis of the valve body 12 and the moving iron core 23; secondly, the oil outlet 16 passes through the bottom end of the valve body 12 and contacts the bottom end of the moving iron core 23, so that the lubricating oil enters from the oil inlet 15, passes through the cavity 13 and the sealing line 24 area, and flows out from the oil outlet 16. When the moving iron core 23 intersects with the valve body 12 at the sealing line 24, the sealing line 24 separates the oil inlet 15 from the oil outlet 16, closing the flow channel 14.

[0027] Furthermore, the mounting assembly 1 further includes an inner ring groove 17 formed on the radial inner side surface of the cavity 13 , the inner ring groove 17 coincides with the axis of the oil inlet hole 15 , and the diameter of the inner ring groove 17 is greater than the diameter of the oil inlet hole 15 .

[0028] Specifically, the inner ring groove 17 is formed inside the valve body 12, and its radial diameter is larger than the radial diameter of the oil inlet hole 15, so that the intersection area with the radial side of the moving iron core 23 is increased. After the lubricating oil enters the oil inlet hole 15, it enters the inner ring groove 17, so that the distance that the moving iron core 23 moves up and down is directly proportional to the flow rate of the lubricating oil flow channel 14, and this ratio is greater than the ratio of the existing solenoid valve, so that the moving iron core 23 moves the same distance, the flow rate of the flow channel 14 in this embodiment increases, and the flow rate of the lubricating oil is increased, thereby improving the lubrication effect.

[0029] Furthermore, the switch assembly 2 includes a coil 21 , a coaxial fixed iron core 22 is provided at the top end of the coil 21 , the fixed iron core 22 is coaxial with the moving iron core 23 , and compression springs 25 are provided on opposite end surfaces of the fixed iron core 22 .

[0030] Specifically, when the coil 21 is energized, a magnetic field is generated, which applies an upward electromagnetic force to the moving iron core 23, thereby pushing it to move upward, the flow channel 14 opens, and the compression spring 25 is compressed. When the current of the coil 21 decreases and the electromagnetic force acting on the moving iron core 23 is less than the elastic force of the compression spring 25, the moving iron core 23, pushed by the compression spring 25, intersects with the valve body 12 at the sealing line 24, closes the flow channel 14, and achieves a sealing effect.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0032] The technology, shape and structure that are not described in detail in this utility model are all well-known technologies.

Claims

1. An electromagnetically controlled switching valve for a hybrid transmission drive system, characterized in that: include: A mounting assembly (1), comprising a valve body (12), the interior of the valve body (12) forming a cavity (13), the valve body (12) forming a flow channel (14) for lubricating oil to flow, the flow channel (14) flowing through the cavity (13); and A switch assembly (2) is arranged in the cavity (13), and the switch assembly (2) includes a moving iron core (23) that moves along the radial inner side surface of the valve body (12), and one end of the moving iron core (23) is in line contact with the radial inner side surface of the valve body (12), and the line contact intersects with the flow channel (14).

2. The electromagnetically controlled on-off valve according to claim 1, characterized in that: The movable iron core (23) forms an inclined surface A on the side of one end close to the flow channel (14), and the radial inner side surface of the valve body (12) forms an inclined surface B at the position where it contacts the movable iron core (23). The inclination angle α of the inclined surface A is 45°-55°, and the inclination angle β of the inclined surface B is α+5°.

3. The electromagnetically controlled on-off valve according to claim 2, characterized in that: The inclined surface A and the inclined surface B intersect at a sealing line (24), and the sealing line (24) is capable of closing the flow channel (14).

4. The electromagnetically controlled on-off valve according to claim 1, characterized in that: The installation component (1) further comprises: an oil inlet hole (15) penetrating the side of the valve body (12), wherein the axis of the oil inlet hole (15) is perpendicular to the axis of the valve body (12), and the oil inlet hole (15) intersects with the cavity (13); and An oil outlet hole (16) passes through the bottom end of the valve body (12), and the oil outlet hole (16) intersects with the cavity (13). The oil inlet hole (15) forms the flow channel (14) through the cavity (13) and the oil outlet hole (16).

5. The electromagnetically controlled on-off valve according to claim 4, characterized in that: The mounting assembly (1) further comprises an inner ring groove (17) formed on the radial inner side surface of the cavity (13), the inner ring groove (17) coincides with the axis of the oil inlet hole (15), and the diameter of the inner ring groove (17) is greater than the diameter of the oil inlet hole (15).

6. The electromagnetically controlled on-off valve according to claim 1, characterized in that: The switch assembly (2) comprises a coil (21), a coaxial fixed iron core (22) is provided at the top end of the coil (21), the fixed iron core (22) is coaxial with the moving iron core (23), and compression springs (25) are provided on opposite end surfaces of the fixed iron core (22).

Images