Position control assembly, electromagnetic valve applying position control assembly and anti-lock braking system

Abstract

The utility model discloses a position control assembly and an electromagnetic valve and an anti-lock brake system applying the same, the position control assembly comprises a magnetizer assembly and a magnetizer position control piece, the magnetizer assembly comprises three magnetizers and a shell, the three magnetizers are sequentially arranged along the same axis and are all provided with through holes which extend along the axis direction but are not completely collinear, and the magnetizer position control piece is arranged in the shell. The magnetizers located on the two sides can move along the axis, the magnetizer located in the middle is fixed in the cavity of the shell, and the magnetizer position control piece is arranged on the side wall of the magnetizer assembly and used for adjusting the movement positions of the magnetizers. The problems that in the prior art, a brake system is large in occupied space, large in weight and high in cost are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic valves, and in particular relates to a position control component, an electromagnetic valve and an anti-lock brake system using the same. Background Art

[0002] The anti-lock brake system prevents the wheels from locking by repeatedly increasing, maintaining or reducing the brake pressure applied to the wheels to obtain effective braking operation. Usually, the increase of brake pressure is called the boost mode, the maintenance of brake pressure is called the pressure holding mode, and the reduction of brake pressure is called the pressure reduction mode. The valve with three working positions of boost, pressure holding and pressure reduction is usually composed of two two-port two-position / three-port two-position solenoid valves connected in series, or a group of three-port three-position solenoid valves composed of two coil assemblies, two core assemblies and a main valve body.

[0003] For the brake system, each brake channel usually requires two solenoid valves or a set of three-port three-position solenoid valves consisting of two coil assemblies, two core assemblies and a main valve body. The number of solenoid valves required for a multi-channel brake system will increase exponentially, making the entire brake transmission system occupy a large space, weigh a lot, and cost more. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a solenoid valve assembly and an anti-lock brake system and a vehicle using the same.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] In a first aspect, a position control component is provided, comprising:

[0007] A magnetizer assembly, comprising three magnetizers and a housing, wherein the three magnetizers are arranged in sequence along the same axis and each has a through hole extending along the axis but not completely collinear, wherein the magnetizers at both sides can move along the axis and the magnetizer at the middle is fixed in a cavity of the housing; and

[0008] The magnetizer position control component is arranged on the side wall of the magnetizer assembly and is used to adjust the movement position of the magnetizer.

[0009] In some embodiments, when no electrical signal is applied to the magnetic conductor position control component, the first magnetic conductor and the second magnetic conductor have a first gap in the axial direction, and the second magnetic conductor and the third magnetic conductor have a second gap in the axial direction.

[0010] In some embodiments, when the electrical signal input into the magnet position control component is small, the first magnet moves in the axial direction under the action of the electromagnetic force of the magnet position control component. At this time, the first magnet and the second magnet are in contact or extrusion state in the axial direction, and the second magnet and the third magnet have a second gap in the axial direction, wherein the small electrical signal is represented by a voltage value between 20%-50% of the rated voltage of the solenoid valve.

[0011] In some embodiments, when the electrical signal input into the magnet position control component is large, the third magnet moves in the axial direction under the action of the electromagnetic force of the magnet position control component. At this time, the second magnet and the third magnet are in contact or compression state in the axial direction, and the first magnet and the second magnet are still in contact or compression state in the axial direction, wherein the voltage value of the larger electrical signal is greater than the voltage value of the smaller electrical signal but not higher than 70% of the rated voltage of the solenoid valve.

[0012] In some embodiments, a cross-sectional area of ​​the first magnetic conductor is greater than a cross-sectional area of ​​the third magnetic conductor.

[0013] In a second aspect, a solenoid valve is provided, which, in addition to the position control component, further comprises:

[0014] A main valve body assembly having a plurality of cavities is sealedly connected to the position control assembly and the gas displacement is regulated by the position control assembly.

[0015] In certain embodiments, the main valve body assembly includes:

[0016] a main valve body, having a cavity sealingly matched with the position control assembly and an opening communicating with the cavity, and arranged on a side wall of the position control assembly;

[0017] a valve seat, having a cavity sealingly matched with the position control assembly and a through hole communicating with the cavity, and arranged on both sides of the position control assembly;

[0018] The elastic connecting members are symmetrically arranged along the axis and are provided at the ends of both sides of the position control assembly.

[0019] In some embodiments, the magnetic conductive position control element adopts a single coil.

[0020] In a third aspect, an anti-lock braking system is provided, including the solenoid valve.

[0021] The beneficial effects of the utility model are as follows: the solenoid valve is composed of only one coil, one magnetic conductor assembly and a main valve body, and the solenoid valve has a compact structure, few parts, small space occupation, light weight and lower cost, and can meet the requirements of compactness and lightness of vehicles. By inputting different voltages / currents to the coil to control the opening and closing of different gas channels, the purpose of switching between the three working positions of pressurization, pressure maintenance and pressure reduction can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a structural schematic diagram of a solenoid valve assembly provided in one embodiment of the utility model;

[0024] Figure 2 This is a working principle diagram of the solenoid valve assembly provided in one embodiment of the utility model when no electrical signal is supplied;

[0025] Figure 3 This is the working principle of the solenoid valve assembly provided in one embodiment of the utility model when a relatively small electrical signal is introduced;

[0026] Figure 4 This is a working principle diagram of the solenoid valve assembly provided in one embodiment of the utility model when a large electrical signal is passed through;

[0027] Figure 5 It is a cross-sectional view of a magnetic conductor assembly provided in one embodiment of the utility model. DETAILED DESCRIPTION

[0028] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0029] The present invention provides a position control component, which solves the problems of large space occupation, heavy weight and high cost of common traditional brake systems. The present invention also provides a solenoid valve using the position control component and an anti-lock brake system using the solenoid valve.

[0030] like Figure 1 and Figure 5 As shown, in one embodiment, a position control assembly is provided, the position control assembly 20 includes a magnetic conductive assembly 201 and a magnetic conductive position control member 202;

[0031] Among them, the magnet assembly 201 includes three magnets and a shell 2011, the three magnets are arranged in sequence along the axis and all have through holes extending along the axis direction but not completely collinear, the magnets located on both sides can move along the axis and the magnet located in the middle is fixed in the cavity of the shell 2011; in one embodiment, the three magnets are arranged in sequence along the axis as the first magnet 2012, the second magnet 2013 and the third magnet 2014, the second magnet 2013 is fixed in the cavity of the left section of the shell 2011, at least a part of the third magnet 2014 is arranged in the cavity on the left side of the second magnet 2013 and is slidably connected to the second magnet 2013, at least a part of the first magnet 2012 is arranged in the cavity of the right section of the shell 2011 and is slidably connected to the shell 2011; in one embodiment, the shell 2011 is a thin-walled member made of non-magnetic material, and the second magnet 2013 is a thin-walled member of the left section. The second magnet 2013 is connected to the left section of the housing 2011 by welding, and the main body of the first magnet 2012 has through holes symmetrically arranged along the axis on the outer circumference, and the main body of the first magnet 2012 is arranged in the cavity of the right section of the housing 2011 and slides in the cavity of the right section of the housing 2011. The left end of the third magnet 2014 has a pair of through holes along the axis. The through holes are axially symmetrically arranged and are connected to the through hole at the center of the third magnet 2014. A non-magnetic insert 2014a is installed at the right end of the third magnet 2014. The center of the non-magnetic insert 2014a has a through hole. The third magnet 2014 is arranged in the cavity of the left section of the second magnet 2013 and slides in the cavity of the left section of the second magnet 2013. The cross-sectional area of ​​the first magnet 2012 is greater than the cross-sectional area of ​​the third magnet 2014.

[0032] The magnet position control component 202 is used to adjust the movement position of the magnet assembly 201; in one embodiment, the magnet position control component 202 is mounted on the outer wall of the magnet assembly 201 to regulate the movement position of the first magnet 2012 and the third magnet 2014 in the axial direction.

[0033] When no electrical signal is input to the magnet position control element 202 , the first magnet 2012 and the second magnet 2013 have a first gap 2015 in the axial direction, and the second magnet 2013 and the third magnet 2014 have a second gap 2016 in the axial direction.

[0034] When the electrical signal passed into the magnet position control component 202 is small, the first magnet 2012 moves to the specified position along the axial direction under the action of the electromagnetic force of the magnet position control component 202. At this time, the first magnet 2012 and the second magnet 2013 are in contact or extrusion state in the axial direction, and the second magnet 2013 and the third magnet 2014 have a second gap 2016 in the axial direction.

[0035] When the electrical signal input into the magnet position control component 202 is large, the third magnet 2014 moves to the specified position along the axial direction under the action of the electromagnetic force of the magnet control component 202. At this time, the second magnet 2013 and the third magnet 2014 are in contact or compression state in the axial direction, and the first magnet 2012 and the second magnet 2013 are in contact or compression state in the axial direction.

[0036] like Figure 1 As shown, in one embodiment, a solenoid valve is provided. In addition to the position control assembly 20 mentioned in the above embodiment, the solenoid valve also includes a main valve body assembly 10.

[0037] The main valve body assembly 10 has a plurality of cavities, and the main valve body assembly 10 is sealedly connected to the position control assembly 20 and the gas displacement is regulated by the position control assembly 20;

[0038] In one embodiment, the main valve body assembly 10 includes: a main valve body 101, a valve seat 102 and an elastic connecting member 103; in one embodiment, as Figure 1 As shown, the main valve body 101 has a cavity that is sealed with the position control component 20 and an opening that is connected to the cavity; the main valve body 101 includes a first section 1011, a second section 1012 and a third section 1013, the second section 1012 is sealed and connected to the outer wall of the position control component 20, and a buckle 1014 is installed at the right end of the first section 1011 to ensure the sealing of the entire device; the bottom of the first section 1011 has an air inlet 1015, and the air inlet 1015 is connected to an external air storage device, the bottom of the third section 1013 has a first air outlet 1016, and the center of the left end of the third section 1013 has a second air outlet 1017;

[0039] In one embodiment, the valve seat 102 includes a first valve seat 1021 and a second valve seat 1022. The first valve seat 1021 is arranged in the cavity of the first section 1011 and is located at the right end of the first magnetic conductor 2012. The left end of the first valve seat 1021 is riveted to the right end of the shell 2011, and the right end has through holes arranged symmetrically along the axial direction. A sealing ring is provided at the connection between the left end of the first valve seat 1021 and the right end of the shell 2011 to ensure the sealing of the entire structure. The second valve seat 1022 is arranged in the cavity of the third section 1013. The second valve seat 1022 is a plastic part with a metal inner core. The center of the metal inner core of the second valve seat 1022 has a through hole extending along the axial direction and the through hole is connected to the second air outlet 1017. The outer wall of the second valve seat 1022 has through holes extending along the axis and symmetrically arranged along the axis. The through hole on the side wall below the second valve seat 1022 is connected to the first air outlet 1016. Two sets of sealing rings are sleeved on the outer wall of the second valve seat 1022 to ensure the sealing of the structure. The right end of the second valve seat 1022 is welded to the left end of the second magnetic conductor 2013.

[0040] In one embodiment, the elastic connector 103 includes a first elastic connector 1031 and a second elastic connector 1032. The first elastic connector 1031 is symmetrically arranged in the cavity of the first valve seat 1021 along the axis, one end of the first elastic connector 1031 is connected to the right end of the first magnet 2012, and the other end is connected to the right end of the housing 2011; the second elastic connector 1032 is symmetrically arranged between the second magnet 2013 and the third magnet 2014 along the axis, wherein, specifically, one end of the second elastic connector 1032 is connected to the left end of the second magnet 2013, and the other end is connected to the right end of the third magnet 2014. In one embodiment, the first elastic connector 1031 and the second elastic connector 1032 are both springs;

[0041] In one embodiment, the through hole on the first valve seat 1021, the first gap 2015 and the through hole on the first magnetic conductor 2012 together constitute a first cavity A; the through hole on the second valve seat 1022, the first air outlet hole 1016 and the through hole on the third magnetic conductor 2014 together constitute a second cavity B; the second air outlet hole 1017 and another through hole on the second valve seat 1022 together constitute a third cavity C.

[0042] like Figure 2As shown, in one embodiment, when no electrical signal is passed through the magnetic position control component 202, the first magnetic conductor 2012 presses the first valve seat 1021 under the elastic force of the first elastic connecting component 1031, and the third magnetic conductor 2014 presses the second valve seat 1022 under the elastic force of the second elastic connecting component 1032. At this time, the first cavity A is connected to the second cavity B, and the third cavity C is not connected to the first cavity A and the second cavity B. The gas introduced into the gas storage device passes through the first cavity A through the air inlet 1015 to the second cavity B, and then passes through the first air outlet 1016 to the brake system, and the solenoid valve is in the boost position.

[0043] like Figure 3 As shown, in one embodiment, when a small electrical signal is passed into the magnet position control member 202, the electromagnetic force on both sides of the first magnet 2012 is greater than the elastic force of the first elastic connector 1031 and the gas pressure in the first cavity A, pushing the first magnet 2012 to move to contact or squeeze the second magnet 2013, and the electromagnetic force on both sides of the third magnet 2014 is less than the elastic force of the second elastic connector 1032 and the gas pressure in the second cavity B, and the third magnet 2014 remains in its original position. At this time, the first cavity A, the second cavity B and the third cavity C are not connected, and the solenoid valve is in a pressure-maintaining position. Among them, the small electrical signal is represented by a voltage value between 20% and 50% of the rated voltage of the solenoid valve. In one embodiment, the rated voltage of the solenoid valve is 12V, and the voltage value of the small electrical signal is 3V or 5V.

[0044] like Figure 4 As shown, in one embodiment, when a larger electrical signal is passed into the magnet position control member 202, the electromagnetic force generated on both sides of the third magnet 2014 is greater than the elastic force of the second elastic connector 1032 and the gas pressure in the second cavity B, pushing the third magnet 2014 to move to contact or squeeze the second magnet 2013, while the first magnet 2012 remains in its original position. At this time, the second cavity B is connected to the third cavity C, and the first cavity A is not connected to the second cavity B and the third cavity C. The gas of the brake system is discharged through the first air outlet 1016 and then through the second air outlet 1017, and the solenoid valve is in the pressure reduction position. Among them, the voltage value of the larger electrical signal is greater than the voltage value of the smaller electrical signal but not higher than 70% of the rated voltage of the solenoid valve. In one embodiment, the rated voltage of the solenoid valve is 12V, and the voltage value of the larger electrical signal is 8V.

[0045] In one embodiment, an anti-lock braking system is provided. The anti-lock braking system includes the solenoid valve mentioned in the above embodiment.

[0046] During the operation of the anti-lock braking system, in order to ensure sufficient and reasonable braking force, the gas pressure in the second chamber B will be controlled within a reasonable range, and the ECU will monitor and adjust the air pressure in real time.

[0047] After the vehicle is started, the solenoid valve is not energized. At this time, the gas in the gas storage device fills the first cavity A and the second cavity B from the air inlet 1015, and then passes to the brake system from the first air outlet 1016, and the solenoid valve enters the boost mode; when the ECU monitors that the gas pressure in the second cavity B increases to a predetermined minimum value, a small electrical signal is passed to the solenoid valve. At this time, the first cavity A, the second cavity B and the third cavity C are not connected, and the solenoid valve enters the pressure holding mode; when the vehicle emergency brakes, the anti-lock braking system of the brake system comes into play, the gas pressure in the second cavity B is lost, and the ECU detects that the gas pressure in the second cavity B is lower than the predetermined minimum value. When the gas pressure in the second cavity B reaches the minimum value, the power is cut off to the solenoid valve, and the solenoid valve will re-enter the boost mode until the gas pressure in the second cavity B reaches the predetermined minimum value again; if the gas pressure in the second cavity B is greater than the predetermined maximum value due to leakage, control or other reasons, the ECU will pass a large electrical signal to the solenoid valve. At this time, the gas in the gas storage device will no longer replenish the second cavity B, and the gas in the second cavity B will be discharged to the first air outlet 1016 and the second air outlet 1017 through the third cavity C until the gas pressure in the second cavity B is less than the predetermined maximum value. At this time, the ECU will pass a lower electrical signal to the solenoid valve, and the solenoid valve will re-enter the pressure maintaining state.

[0048] The solenoid valve of the utility model is composed of only a single coil, a single magnetic conductor assembly and a main valve body. The solenoid valve has a compact structure, few parts, small space occupation, light weight and lower cost, and can meet the requirements of compactness and lightness of vehicles. By inputting electrical signals of different sizes to the coil to control the opening and closing of different gas channels, the purpose of switching between the three working positions of boosting, maintaining pressure and reducing pressure can be achieved.

[0049] The above description is merely a preferred embodiment of one or more embodiments of the present specification and is not intended to limit one or more embodiments of the present specification. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present specification shall be included in the scope of protection of one or more embodiments of the present specification.

Claims

1. A position control component, characterized in that: include: A magnetizer assembly, comprising three magnetizers and a housing, wherein the three magnetizers are arranged in sequence along the same axis and each has a through hole extending along the axis but not completely collinear, wherein the magnetizers at both sides can move along the axis and the magnetizer at the middle is fixed in a cavity of the housing; and The magnetizer position control component is arranged on the side wall of the magnetizer assembly and is used to adjust the movement position of the magnetizer.

2. The position control assembly according to claim 1, characterized in that: When no electrical signal is passed through the magnetic conductor position control component, the three magnetic conductors are arranged in sequence along the axis as a first magnetic conductor, a second magnetic conductor and a third magnetic conductor, the first magnetic conductor and the second magnetic conductor have a first gap in the axial direction, and the second magnetic conductor and the third magnetic conductor have a second gap in the axial direction.

3. The position control assembly according to claim 2, characterized in that: When the electrical signal passed into the magnetic position control component is small, the first magnetic conductor moves in the axial direction under the action of the electromagnetic force of the magnetic position control component. At this time, the first magnetic conductor and the second magnetic conductor are in contact or extrusion state in the axial direction, and the second magnetic conductor and the third magnetic conductor have a second gap in the axial direction, wherein the small electrical signal is represented by a voltage value between 20%-50% of the rated voltage of the solenoid valve.

4. The position control assembly according to claim 2, characterized in that: When the electrical signal passed into the magnet position control component is large, the third magnet moves in the axial direction under the action of the electromagnetic force of the magnet position control component. At this time, the second magnet and the third magnet are in contact or compression state in the axial direction, and the first magnet and the second magnet are still in contact or compression state in the axial direction, wherein the voltage value of the larger electrical signal is greater than the voltage value of the smaller electrical signal but is not higher than 70% of the rated voltage of the solenoid valve.

5. The position control assembly according to claim 3, characterized in that: The cross-sectional area of ​​the first magnetic conductor is greater than the cross-sectional area of ​​the third magnetic conductor.

6. A solenoid valve comprising the position control assembly as claimed in claim 1, characterized in that: Also includes: A main valve body assembly having a plurality of cavities is sealedly connected to the position control assembly and the gas displacement is regulated by the position control assembly.

7. The solenoid valve according to claim 6, characterized in that: The main valve body assembly comprises: a main valve body, having a cavity sealingly matched with the position control assembly and an opening communicating with the cavity, and arranged on a side wall of the position control assembly; a valve seat, having a cavity sealingly matched with the position control assembly and a through hole communicating with the cavity, and arranged on both sides of the position control assembly; The elastic connecting members are symmetrically arranged along the axis and are provided at the ends of both sides of the position control assembly.

8. The solenoid valve according to claim 6, characterized in that: The magnetic conductor position control element adopts a single coil.

9. An anti-lock braking system, characterized in that: A solenoid valve comprising any one of claims 6 to 8.

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