Automatic transmission pressure regulating electromagnetic valve with simplified structure

Abstract

The utility model discloses an automatic transmission pressure regulating solenoid valve with a simplified structure, which relates to the field of transmission pressure regulating solenoid valves, comprises a shell and a valve body arranged at one end of the shell, and is characterized in that a plug is arranged in the valve body, and an internal thread in threaded connection with the plug is arranged at one end of the valve body; a positioning groove and a positioning protrusion are arranged on the outer surface of the valve body, a valve rod is arranged in the valve body in a penetrating mode, a spring is arranged between the plug and the valve rod, a base connected with the valve body is arranged in the shell, an ejector rod is arranged in the base, the outer surface of the base is sleeved with an iron sleeve, and a gasket connected with the base is arranged in the iron sleeve. An iron core is arranged in the iron sleeve, a coil is arranged on the outer surface of the iron sleeve in a sleeving mode, the shell is arranged outside the coil, the valve rod can be pushed to the direction of the valve body to the designated position in the stroke according to the magnitude of an electric signal input by the TCU and the elastic force effect of the spring, and the oil pressure adjusting function of an oil way in the automatic transmission is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission pressure regulating solenoid valve technical field, especially in a kind of automatic transmission pressure regulating solenoid valve of simplified structure. BACKGROUND

[0002] Automobile automatic transmission relies on several switch type and pressure regulating type solenoid valve on its control panel to adjust each oil circuit, to control the automatic switching of transmission gear position;

[0003] With the requirement of automotive industry to the comfort, responsiveness, reliability and other requirements of automatic transmission gear shift is more stringent, the monomer performance of each solenoid valve inside is also more stringent;At the same time, the manufacturing cost is increasingly compressed in automotive industry;Original pressure regulating solenoid valve structure is difficult to meet the high performance requirement under the condition of low manufacturing cost, and the existing pressure regulating solenoid valve cannot realize the internal oil circuit oil pressure regulating function. UTILITY MODEL CONTENT

[0004] (One) technical problem solved

[0005] In view of the problems existing in the prior art, the utility model provides a kind of automatic transmission pressure regulating solenoid valve of simplified structure.

[0006] (Two) technical scheme

[0007] To achieve the above purpose, the utility model is realized by the following technical scheme: a kind of automatic transmission pressure regulating solenoid valve of simplified structure, including shell, and the valve body being set in one end of shell, its characterized in that:

[0008] The inside of the valve body is provided with screw plug;

[0009] The outer surface of the valve body is provided with a plurality of circular or U-shaped flat groove shape and penetrates to the oil port of inside cavity;

[0010] The oil port is respectively first air vent, second air vent, oil discharge port, feedback port and throttle port, the outer surface of the valve body is provided with control port and oil inlet, the outer surface of the control port and oil inlet is respectively provided with filter screen, the control port is communicated with feedback port, and the feedback port and the throttle port are provided with side groove for intercommunication between them;

[0011] One end of the valve body is provided with internal thread for thread connection with screw plug, the outer surface of the valve body is provided with positioning groove and positioning protrusion, the valve rod is inserted in the inside of the valve body, and spring is arranged between the screw plug and the valve rod;

[0012] The outer surface of the valve rod is respectively provided with a first step, a second step and a third step from left to right, the outer surface of the first step, the second step and the third step is respectively provided with a plurality of annular oil storage grooves, and the diameter of the third step is smaller than that of the first step and the second step.

[0013] The inside of the shell is provided with a base connected with the valve body, the inside of the base is provided with a top rod, the outer surface of the base is sleeved with an iron sleeve, the inside of the iron sleeve is provided with a gasket connected with the base, the inside of the iron sleeve is provided with an iron core, and the outer surface of the iron sleeve is sleeved with a coil.

[0014] The coil comprises a copper wire winding and a nylon wrapping plastic wrapped on the surface of the copper wire winding, the coil is hollow, the iron sleeve is arranged in the inside of the coil, and the side of the coil close to the valve body is provided with a connector.

[0015] As a preferred scheme of the automatic transmission pressure regulating solenoid valve with simplified structure, the screw plug is arranged in the inside of the small end of the valve body, the screw plug is in a cylindrical shape, the outer surface of the screw plug is provided with external threads matched with the internal threads, the two end faces of the screw plug are respectively provided with an internal cavity groove and an external groove, the internal cavity groove is in a circular table shape, the external groove is in a local cylindrical shape along the radial direction of the center of the valve body, and the spring is arranged in the inside of the valve rod end face groove and the internal cavity groove.

[0016] As a preferred scheme of the automatic transmission pressure regulating solenoid valve with simplified structure, the valve rod is in a cylindrical shape, the valve rod end face groove is arranged on the end face of the valve rod close to the screw plug, and the convex step is arranged on the center of the end face of the valve rod close to the large end of the valve body.

[0017] As a preferred scheme of the automatic transmission pressure regulating solenoid valve with simplified structure, the valve body comprises a small end and a large end, the outer surface of the small end is provided with an external flat surface, the inside of the valve body is provided with an internal chamber for accommodating the valve rod, the cross section of the valve body is in a cylindrical shape, the diameter of the large end is larger than that of the small end, the corresponding internal chamber diameter of the large end is also larger, and the internal threads are arranged on the inner wall of the small end.

[0018] As a preferred scheme of the automatic transmission pressure regulating solenoid valve with simplified structure, the base comprises a base large end and a base small end, the base has a T-shaped overall section, the base is arranged on one side of the valve body large end, the end face of the base large end is provided with a base protruding step, the base protruding step is located in the cavity of the valve body, the inside of the base is hollow, the top rod is inserted into the inside of the base, the end face of the top rod close to the valve rod is in contact with the valve rod, and the middle part of the top rod is provided with a side surface groove.

[0019] As a preferred scheme of the automatic transmission pressure regulating solenoid valve with simplified structure, the base comprises a base large end and a base small end, the base has a T-shaped overall section, the base is arranged on one side of the valve body large end, the end face of the base large end is provided with a base protruding step, the base protruding step is located in the cavity of the valve body, the inside of the base is hollow, the top rod is inserted into the inside of the base, the end face of the top rod close to the valve rod is in contact with the valve rod, and the middle part of the top rod is provided with a side surface groove.

[0020] As a preferred scheme of the automatic transmission pressure regulating solenoid valve with simplified structure, the base comprises a base large end and a base small end, the base has a T-shaped overall section, the base is arranged on one side of the valve body large end, the end face of the base large end is provided with a base protruding step, the base protruding step is located in the cavity of the valve body, the inside of the base is hollow, the top rod is inserted into the inside of the base, the end face of the top rod close to the valve rod is in contact with the valve rod, and the middle part of the top rod is provided with a side surface groove.

[0021] As a preferred scheme of the automatic transmission pressure regulating solenoid valve with simplified structure, the base comprises a base large end and a base small end, the base has a T-shaped overall section, the base is arranged on one side of the valve body large end, the end face of the base large end is provided with a base protruding step, the base protruding step is located in the cavity of the valve body, the inside of the base is hollow, the top rod is inserted into the inside of the base, the end face of the top rod close to the valve rod is in contact with the valve rod, and the middle part of the top rod is provided with a side surface groove.

[0022] (Three) beneficial effects

[0023] The utility model provides a kind of automatic transmission pressure regulating solenoid valve with simplified structure. It has the following beneficial effects:

[0024] (1) When the automatic transmission pressure regulating solenoid is in use, the automatic transmission TCU electrical signal is received through the coil terminal on the connector, and the electrical signal is converted into a magnetic field, and then the base, the iron sleeve, the iron core and the shell generate an electromagnetic force under the action of the magnetic field, wherein the iron core moves in the axial direction to the base under the action of the electromagnetic force, thereby pushing the top rod and the valve rod together to overcome the spring force, and according to the size of the TCU input electrical signal, and cooperating with the spring force, the valve rod can be pushed to the specified position within the stroke of the valve body.

[0025] (2) The first step of the valve rod cooperates with the oil discharge port of the valve body, and the second step of the valve rod cooperates with the oil inlet port of the valve body, forming an oil inlet port and an oil discharge port with a specified size of flow cross section, and changing the size of the cross section to adjust the oil pressure output from the control port of the valve body, and by increasing the flow cross section of the oil inlet port and reducing the flow cross section of the oil discharge port, the output oil pressure of the control port can be increased, and vice versa, thereby realizing the oil pressure regulation function of the automatic transmission internal oil circuit.

[0026] (3) The control port on the valve body is in communication with the feedback port, the oil pressure is conducted from the feedback port to the throttle port, and then back to the chamber surrounded by the second step and the third step of the valve rod in the valve body, and the oil pressure generates a thrust to affect the position of the valve rod through the cross section difference between the second step and the third step of the valve rod, thereby obtaining the function of oil pressure self-feedback. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is the overall structure diagram of the present application.

[0029] Figure 2 is the exploded view of the present application.

[0030] Figure 3 is the cross-sectional view of the present application.

[0031] Figure 4 is the view of the coil terminal of the present application. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application.

[0033] Embodiment 1

[0034] Referring toFigure 1 、 Figure 2 With Figure 3 , the first embodiment of the utility model provides a simplified structure's automatic transmission pressure regulating solenoid valve, including shell 12, and the valve body 4 of setting in shell 12 one end, the inside of valve body 4 is provided with screw plug 1, the outer surface of valve body 4 is provided with multiple circular or U type flat groove shape and the oil port of going through to the inside cavity,

[0035] Oil port is respectively first vent 15, second vent 31, oil discharge port 16, feedback port 17 and throttle port 19, the outer surface of control port 28 and oil inlet 29 is provided with filter screen 5 respectively, control port 28 is communicated with feedback port 17, and the side groove 18 for intercommunication is arranged between feedback port 17 and throttle port 19, the outer surface of valve stem 3 is provided with first step 26, second step 30 and third step 32 from left to right, and the outer surface of first step 26, second step 30 and third step 32 is provided with multiple annular oil storage grooves 20, and the diameter of third step 32 is smaller than the diameter of first step 26 and second step 30.

[0036] Specifically, the valve stem 3 is cylindrical, the valve stem 3 is provided with a valve stem end face groove 14 on the end face close to the screw plug 1 side, the valve stem 3 is provided with a convex step 21 at the center of the end face close to the valve body large end 33 side, the valve body 4 includes a valve body small end 13 and a valve body large end 33, the outer surface of the valve body small end 13 is provided with an outer side plane 51, the inside of the valve body 4 is provided with an internal chamber 27 accommodating the valve stem 3, and the cross section of the valve body 4 is a cylinder, the diameter of the valve body large end 33 is larger than the diameter of the valve body small end 13, the corresponding inside chamber diameter of the valve body large end 33 is also large, the internal thread 25 is arranged on the inner wall of the valve body small end 13, the base 7 includes a base large end 35 and a base small end 36, the whole cross section of the base 7 is T-shaped, the base 7 is arranged on one side of the valve body large end 33, the end face of the base large end 35 is provided with a base convex step 34, the base convex step 34 is located in the cavity of the valve body 4, the inside of the base 7 is hollow, the top rod 6 is inserted into the inside of the base 7, the end face of the top rod 6 close to the valve stem 3 is in contact with the valve stem 3, and the middle part of the top rod 6 is provided with a side groove 48.

[0037] Further, the control port 28 on the valve body 4 is in communication with the feedback port 17, and the oil pressure is conducted from the feedback port 17 to the throttle port 19, and then back to the chamber in the valve body 4 surrounded by the second step 30 and the third step 32 of the valve rod 3, and the oil pressure generates a thrust force to affect the position of the valve rod 3 through the cross-section difference between the second step 30 and the third step 32 of the valve rod 3, thereby obtaining the function of oil pressure pilot self-feedback.

[0038] Embodiment 2

[0039] Referring to Figure 1 、 Figure 2 、 Figure 3 With Figure 4 , the second embodiment of the utility model, this embodiment is based on the last embodiment, one end of the valve body 4 is provided with the internal thread 25 connected with the screw plug 1, the outer surface of the valve body 4 is provided with the positioning groove 49 and the positioning protrusion 50, the valve rod 3 is inserted in the inside of the valve body 4, the spring 2 is arranged between the screw plug 1 and the valve rod 3, the inside of the shell 12 is provided with the base 7 connected with the valve body 4, the inside of the base 7 is provided with the top rod 6, the outer surface of the base 7 is sleeved with the iron sleeve 8, the inside of the iron sleeve 8 is provided with the gasket 9 connected with the base 7, the inside of the iron sleeve 8 is provided with the iron core 10, the outer surface of the iron sleeve 8 is sleeved with the coil 11, and the shell 12 is arranged outside the coil 11.

[0040] The coil 11 includes the enameled copper wire winding 39 and the nylon wrapping plastic 37 wrapped on the surface of the enameled copper wire winding 39, the coil 11 is hollow, the iron sleeve 8 is inserted in the inside of the coil 11, the side of the coil 11 close to the valve body 4 is provided with the connector 38, and two coil terminals 43 are arranged in the connector 38.

[0041] Specific, screw plug 1 is arranged in the inside of valve body small end 13, screw plug 1 is cylindrical, screw plug 1 outer surface is provided with the outer thread 24 matched with inner thread 25, the both ends of screw plug 1 are provided with inner cavity recess 22 and outer side recess 23 respectively, inner cavity recess 22 is circular table, outer side recess 23 is the local cylindrical along the radial direction of valve body 4 center, spring 2 is arranged in the inside of valve stem end surface recess 14 and inner cavity recess 22, shell 12 is cylindrical and contains non-through cavity, coil 11, valve body big end 33, base 7 and ferrule 8 are partially arranged in the inside of shell 12, shell 12 outer surface is provided with rectangular recess, the part of connector 38 is exposed outside shell 12 from shell 12 rectangular recess, the inside bottom of shell 12 is provided with internal step 45, the end surface of internal step 45 is in contact with coil 11, the part of ferrule 8 extending out of coil 11 is arranged in the inner circle of internal step 45, one side of the inner circle of internal step 45 is provided with bottom groove 47, the inside bottom wall of shell 12 is provided with bottom protrusion 46, ferrule 8 is cylindrical, the inside of ferrule 8 is hollow, the placement cavity 40 for placing washer 9 is formed in the inside of ferrule 8 between the end surface of base small end 36 and the iron core 10, the middle part of ferrule 8 outer side is provided with annular groove 42, the outer circle of ferrule 8 near base 7 side is provided with U-shaped flange step 41, iron core 10 is arranged in the inside of ferrule 8 and can move along the axis of ferrule 8, iron core 10 is cylindrical as a whole, a plurality of slender iron core grooves 44 are arranged in the inside of iron core 10 and penetrate through iron core 10 along the axial direction of iron core 10, the end surface of both sides of iron core 10 is plane or spherical arc surface, iron core grooves 44 can also be arranged on the outer circle of iron core 10 and be in the form of groove.

[0042] Further, the automatic transmission TCU electrical signal is received through the coil terminal 43 on the connector 38, and the electrical signal is converted into a magnetic field, and then the base 7, the ferrule 8, the iron core 10 and the shell 12 generate electromagnetic force under the action of the magnetic field, wherein the iron core 10 moves in the axial direction to the base 7 under the action of the electromagnetic force, thereby pushing the valve rod 3 and the valve rod 3 together to overcome the spring force of the spring 2, and according to the size of the TCU input electrical signal, and cooperating with the spring force of the spring 2, the valve rod 3 can be pushed to the specified position within the stroke in the direction of the valve body 4.

[0043] Working principle: when the automatic transmission pressure regulating solenoid valve is used, the automatic transmission TCU electrical signal is received through the coil terminal 43 on the connector 38, and the electrical signal is converted into a magnetic field, and then the base 7, the ferrule 8, the iron core 10 and the shell 12 generate electromagnetic force under the action of the magnetic field, wherein the iron core 10 moves in the axial direction to the base 7 under the action of the electromagnetic force, thereby pushing the valve rod 3 and the valve rod 3 together to overcome the spring force of the spring 2, and according to the size of the TCU input electrical signal, and cooperating with the spring force of the spring 2, the valve rod 3 can be pushed to the specified position within the stroke in the direction of the valve body 4.

[0044] The first step 26 and the second step 30 on the valve rod 3 are matched with the designated oil port on the valve body 4 respectively, wherein the first step 26 on the valve rod 3 is matched with the oil discharge port 16 on the valve body 4, and the second step 30 on the valve rod 3 is matched with the oil inlet port 29 on the valve body 4, so as to form the flow cross section of the oil inlet port 29 and the oil discharge port 16 with a specified size, and the oil pressure outputted from the control port 28 of the valve body 4 is adjusted by changing the size of the cross section, and the output oil pressure of the control port 28 can be increased by increasing the flow cross section of the oil inlet port 29 and reducing the flow cross section of the oil discharge port 16, and vice versa, so as to realize the oil pressure adjustment function of the internal oil circuit of the automatic transmission.

[0045] The control port 28 on the valve body 4 is communicated with the feedback port 17, the oil pressure is conducted from the feedback port 17 to the throttle port 19, and then is returned to the cavity surrounded by the second step 30 and the third step 32 of the valve rod 3 in the valve body 4, and the oil pressure generates the thrust to affect the position of the valve rod 3 by the cross section difference between the second step 30 and the third step 32 of the valve rod 3, so as to obtain the function of the oil pressure pilot self-feedback.

[0046] The components inside the electromagnetic valve affecting the performance mainly include the base 7, the iron sleeve 8 and the iron core 10, which are simple and easy to be formed, and the structure optimization and the manufacturing cost compression are realized as a whole.

[0047] It is to be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any such actual relationship or order between such entities or actions.

Claims

1. An automatic transmission pressure regulating solenoid valve with simplified structure, comprising a housing (12) and a valve body (4) arranged at one end of the housing (12), characterized in that: an internal thread (25) is arranged at one end of the valve body (4) and threadedly connected with the screw plug (1); a plurality of circular or U-shaped flat groove-shaped oil ports are arranged on the outer surface of the valve body (4) and penetrate to the inner cavity; the oil ports are respectively a first vent port (15), a second vent port (31), an oil discharge port (16), a feedback port (17), and a throttle port (19), the outer surface of the valve body (4) is provided with a control port (28) and an oil inlet port (29), the outer surface of the control port (28) and the oil inlet port (29) is respectively provided with a filter screen (5), the control port (28) is in communication with the feedback port (17), and a side groove (18) for mutual communication is arranged between the feedback port (17) and the throttle port (19); an internal thread (25) is arranged at one end of the valve body (4) and threadedly connected with the screw plug (1); the outer surface of the valve body (4) is provided with a positioning groove (49) and a positioning protrusion (50), the inside of the valve body (4) is inserted with a valve rod (3), and a spring (2) is arranged between the screw plug (1) and the valve rod (3); the outer surface of the valve rod (3) is respectively provided with a first step (26), a second step (30) and a third step (32) from left to right, the outer surface of the first step (26), the second step (30) and the third step (32) is respectively provided with a plurality of annular oil storage grooves (20), and the diameter of the third step (32) is smaller than that of the first step (26) and the second step (30); the inside of the housing (12) is provided with a base (7) connected with the valve body (4), the inside of the base (7) is provided with a top rod (6), the outer surface of the base (7) is sleeved with an iron sleeve (8), the inside of the iron sleeve (8) is provided with a gasket (9) connected with the base (7), the inside of the iron sleeve (8) is provided with an iron core (10), and the outer surface of the iron sleeve (8) is sleeved with a coil (11), and the housing (12) is arranged outside the coil (11); the coil (11) comprises an enameled copper wire winding (39) and a nylon wrapping plastic (37) wrapped on the surface of the enameled copper wire winding (39), the coil (11) is hollow, the iron sleeve (8) is inserted into the inside of the coil (11), and the side of the coil (11) close to the valve body (4) is provided with a connector (38), and the connector (38) is provided with two coil terminals (43) inside.

2. The automatic transmission pressure regulating solenoid valve of claim 1, wherein: The screw plug (1) is arranged inside the small end (13) of the valve body, the screw plug (1) is cylindrical, the outer surface of the screw plug (1) is provided with external threads (24) matched with internal threads (25), the two end faces of the screw plug (1) are respectively provided with an inner cavity groove (22) and an outer side groove (23), the inner cavity groove (22) is circular truncated cone-shaped, the outer side groove (23) is partially cylindrical along the radial direction of the center of the valve body (4), and the spring (2) is arranged inside the valve rod end face groove (14) and the inner cavity groove (22).

3. The simplified pressure regulating solenoid valve for an automatic transmission according to claim 2, characterized in that: The valve rod (3) is cylindrical, the valve rod (3) is provided with a valve rod end face groove (14) on the end face close to the screw plug (1), and a convex step (21) is arranged at the center of the end face close to the large end (33) of the valve body.

4. The automatic transmission pressure regulating solenoid valve of claim 3, wherein: The valve body (4) comprises a small end (13) and a large end (33), the outer surface of the small end (13) is provided with an outer side plane (51), the inside of the valve body (4) is provided with an internal cavity (27) for accommodating the valve rod (3), the cross section of the valve body (4) is cylindrical, the diameter of the large end (33) of the valve body is larger than that of the small end (13), the corresponding internal cavity diameter of the large end (33) is also larger, and the internal threads (25) are arranged on the inner wall of the small end (13).

5. The simplified pressure regulating solenoid valve for an automatic transmission according to claim 4, characterized in that: The base (7) comprises a large end (35) and a small end (36), the overall cross section of the base (7) is T-shaped, the base (7) is arranged on one side of the large end (33) of the valve body, the end face of the large end (35) of the base is provided with a base convex step (34), the base convex step (34) is located in the cavity of the valve body (4), the inside of the base (7) is hollow, the ejector rod (6) is inserted into the inside of the base (7), the end face of the ejector rod (6) close to the valve rod (3) is in contact with the valve rod (3), and the middle part of the ejector rod (6) is provided with a side groove (48).

6. The simplified pressure regulating solenoid valve for an automatic transmission according to claim 5, characterized in that: The iron sleeve (8) is cylindrical, the inside of the iron sleeve (8) is hollow, a placement cavity (40) for placing a gasket (9) is formed between the end face of the small end (36) of the base and the iron core (10) in the inside of the iron sleeve (8), an annular groove (42) is arranged on the middle part of the outer side of the iron sleeve (8), and a U-shaped flange step (41) is arranged on the outer ring of the side close to the base (7) of the iron sleeve (8).

7. The simplified pressure regulating solenoid valve for an automatic transmission according to claim 6, characterized in that: The iron core (10) is arranged in the inside of the iron sleeve (8) and can move along the axis of the iron sleeve (8), the iron core (10) is cylindrical as a whole, a plurality of elongated iron core cavities (44) are arranged in the inside of the iron core (10) and pass through the iron core (10) along the axial direction of the iron core (10), the end faces of the two sides of the iron core (10) are flat or spherical arc surfaces, and the iron core cavities (44) can also be arranged on the outer ring of the iron core (10) and are in the form of grooves.

8. The simplified pressure regulating solenoid valve for an automatic transmission according to claim 7, characterized in that: The shell (12) is a cylindrical shape with a non-through cavity, the coil (11), valve body large end (33), base (7) and ferrule (8) are partially arranged inside the shell (12), the outer surface of the shell (12) is provided with a rectangular groove, the connector (38) is partially exposed outside the shell (12) by the rectangular groove of the shell (12), the inside bottom of the shell (12) is provided with an internal step (45), the end surface of the internal step (45) is in contact with the coil (11), the part of the ferrule (8) extending out of the coil (11) is arranged in the inner circle of the internal step (45); one side of the inner circle of the internal step (45) is provided with a bottom groove (47), and the inside bottom wall of the shell (12) is provided with a bottom protrusion (46).

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