CN220540419U - Solenoid valve, shock absorber and vehicle - Google Patents

Abstract

The utility model discloses an electromagnetic valve, a shock absorber and a vehicle. The electromagnetic valve comprises a first valve body and a second valve body, wherein the first valve body comprises a first shell, a driving coil, an armature, a mounting seat and a first valve core, the second valve body comprises a second shell, a second valve core, an elastic piece and a valve sleeve, a medium flow channel is formed between the second shell and the first shell, when the driving coil is electrified, the first valve core does not cover a first communication hole, the damping force of the shock absorber is between the maximum value and the minimum value, when the driving coil is electrified, a communication gap for communicating a first space and the medium flow channel is formed between the first valve core and the mounting seat, the first valve core at least partially covers the first communication hole so as to control the pressure of a second space at the upper end of the second valve core, further control the opening of the electromagnetic valve is realized, the adjustment of the damping force of the shock absorber is realized, the pressure difference at two sides of the second valve core is controlled by small current, further the control of the flow area between the medium inlet and the medium outlet is realized, the energy consumption of the electromagnetic valve is low, and the electromagnetic valve has good economical efficiency.

Description

Solenoid valve, shock absorber and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to an electromagnetic valve, a shock absorber and a vehicle.

Background

In shock absorbers for automotive applications, the shock absorbers are generally used to absorb shock and vibration from the ground. In the related art, the damper can realize stepless adjustment of the throttle through the electromagnetic valve to adjust the damping force of the damper, however, the electromagnetic valve is usually a normally closed proportional valve, the throttle holes are all closed when the electromagnetic valve is powered down, and the pressure of hydraulic oil needs to be overcome when the throttle is adjusted, so that the energy consumption is high.

Disclosure of Invention

The present utility model aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the utility model provides the electromagnetic valve, which can reduce the energy consumption of the electromagnetic valve.

The utility model further provides a shock absorber with the electromagnetic valve.

The utility model further provides a vehicle with the electromagnetic valve.

According to an embodiment of the present utility model, a solenoid valve includes: the first valve body comprises a first shell, a driving coil, an armature, a mounting seat and a first valve core, wherein the driving coil and the mounting seat are fixedly arranged on the first shell, the first valve core penetrates through the mounting seat and is fixed with the armature, and a first space is defined by the first valve core and the mounting seat when the driving coil is powered down; the second valve body comprises a second shell, a second valve core, an elastic piece and a valve sleeve, wherein the second shell is fixedly arranged in the first shell and forms a medium flow channel with the first shell, the second valve core is movably arranged in the second shell and jointly defines a second space with the second shell, the valve sleeve is fixedly arranged in the second shell and is communicated with the second space, the peripheral wall of the valve sleeve is provided with a first communication hole, part of the first valve core is arranged in the valve sleeve and forms a third space with the second shell, the third space is communicated with the first communication hole and the first space, and the first valve core is provided with a second communication hole which is communicated with the first space and the medium flow channel; when the driving coil is powered down, the first valve core does not cover the first communication hole, and when the driving coil is powered up, the driving coil drives the armature to drive the first valve core to move so that a communication gap which is communicated with the first space and the medium flow channel is formed between the first valve core and the mounting seat, and the first valve core at least partially covers the first communication hole; the elastic piece is arranged in the second space, two ends of the elastic piece are respectively connected with the second valve core and the second shell along the moving direction of the second valve core, the second shell is provided with a medium inlet and a medium outlet, the medium inlet is communicated with the second space, and the second valve core selectively conducts or disconnects the medium inlet and the medium outlet.

According to the electromagnetic valve disclosed by the embodiment of the utility model, the medium flow channel is formed between the second shell and the first shell, the first valve core does not cover the first communication hole when the driving coil is electrified, the damping force of the shock absorber is between the maximum value and the minimum value, a communication gap for communicating the first space with the medium flow channel is formed between the first valve core and the mounting seat when the driving coil is electrified, the first valve core at least partially covers the first communication hole so as to control the pressure of the second space at the upper end of the second valve core, and then the opening of the electromagnetic valve is controlled, the damping force of the shock absorber is regulated, the electromagnetic valve can control the pressure difference at two sides of the second valve core through smaller current, and then the flow area between the medium inlet and the medium outlet is controlled, so that the electromagnetic valve has lower energy consumption and better economical efficiency.

According to some embodiments of the utility model, the first spool comprises: the first valve core part and the second valve core part are sleeved outside the first valve core part, the first valve core part is fixed with the armature, one end of the first valve core part is installed in the valve sleeve, and a third space is formed between the second valve core part and the second shell.

Further, the second spool portion includes: the first sub-core part is annular, and the second sub-core part is connected between the first sub-core part and the first valve core part to define a groove body structure which is open towards the mounting seat.

Further, the second sub-core portion has a third communication hole that communicates the groove body structure and the third space.

According to some embodiments of the utility model, the valve housing has a housing end wall fixedly connected to a peripheral wall of the valve housing to define a mounting groove having one end open, the first communication hole communicates with the mounting groove, a portion of the first valve spool is mounted in the mounting groove, the housing end wall has a fourth communication hole, and the fourth communication hole communicates with the mounting groove and the second space.

According to some embodiments of the utility model, the second housing has a housing end wall opposite the first housing and a housing side wall, the housing end wall being formed with a first flow channel slot and the housing side wall being formed with a second flow channel slot, the first flow channel slot and the second flow channel slot being configured as part of the medium flow channel, the first flow channel slot being adapted to direct a medium flow to the second flow channel slot.

According to some embodiments of the utility model, the first housing has an annular groove recessed into the first housing, the outlet of the media flow path being contiguous with the media outlet, the annular groove corresponding to the outlet of the media flow path.

According to some embodiments of the utility model, the second spool has a fifth communication hole that communicates the medium inlet and the second space.

According to another embodiment of the present utility model, a shock absorber includes the above electromagnetic valve.

According to the shock absorber provided by the embodiment of the utility model, the medium flow channel is formed between the second shell and the first shell of the electromagnetic valve, when the driving coil is electrified, the first valve core does not cover the first communication hole, the damping force of the shock absorber is between the maximum value and the minimum value, when the driving coil is electrified, a communication gap for communicating the first space with the medium flow channel is formed between the first valve core and the mounting seat, the first valve core at least partially covers the first communication hole so as to control the pressure of the second space at the upper end of the second valve core, further the opening of the electromagnetic valve is controlled, the damping force of the shock absorber is regulated, the electromagnetic valve can control the pressure difference at two sides of the second valve core through smaller current, further the control of the flow area between the medium inlet and the medium outlet is realized, the energy consumption of the electromagnetic valve is lower, and the shock absorber has better economy.

According to a further aspect of the utility model, a vehicle comprises a shock absorber as described above.

According to the vehicle disclosed by the embodiment of the utility model, the electromagnetic valve is arranged on the shock absorber, the medium flow channel is formed between the second shell of the electromagnetic valve and the first shell, the first valve core does not cover the first communication hole when the driving coil is electrified, the damping force of the shock absorber is between the maximum value and the minimum value, a communication gap for communicating the first space with the medium flow channel is formed between the first valve core and the mounting seat when the driving coil is electrified, the first valve core at least partially covers the first communication hole so as to control the pressure of the second space at the upper end of the second valve core, further the opening of the electromagnetic valve is controlled, the damping force of the shock absorber is regulated, the electromagnetic valve can control the pressure difference at two sides of the second valve core through smaller current, further the control of the flow area between the medium inlet and the medium outlet is realized, the energy consumption of the electromagnetic valve is lower, and the vehicle has better economical efficiency.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic view of a shock absorber according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of a shock absorber according to an embodiment of the present utility model;

FIG. 3 is a schematic structural view of a solenoid valve according to an embodiment of the utility model;

FIG. 4 is a schematic diagram of a solenoid valve when the drive coil is energized in accordance with an embodiment of the present utility model;

FIG. 5 is a schematic diagram of the solenoid valve when the drive coil is energized with 0.3A current in accordance with an embodiment of the present utility model;

FIG. 6 is a schematic diagram of the solenoid valve when the drive coil is energized with 0.9A current in accordance with an embodiment of the present utility model;

FIG. 7 is a graph of the energizing current of the drive coil versus the damping force of the shock absorber in accordance with an embodiment of the present utility model;

FIG. 8 is a perspective view of a first valve spool according to an embodiment of the present utility model;

fig. 9 is a perspective view of a valve seat according to an embodiment of the present utility model.

Reference numerals:

the first valve body 1, the first housing 11, the outer housing 111, the annular groove 1111, the magnetism insulator ring 112, the inner housing 113, the driving coil 12, the coil body 121, the socket 122, the armature 13, the mount 14, the first valve element 15, the first valve core 151, the second valve core 152, the first sub-core 1521, the second sub-core 1522, the second communication hole 153, the third communication hole 154, the center through hole 155, the second elastic member 16, the second valve body 2, the second housing 21, the valve seat 211, the valve cover 212, the housing end wall 2111, the first flow channel 21111, the housing side wall 2112, the second fluid passage groove 21121, the second spool 22, the fifth communication hole 221, the elastic member 23, the valve housing 24, the first communication hole 241, the fourth communication hole 242, the gasket 25, the medium inlet 26, the medium outlet 27, the first space 31, the second space 32, the third space 33, the fourth space 34, the medium flow passage 4, the communication gap 5, the electromagnetic valve 10, the cylinder assembly 20, the inner cylinder 201, the second orifice 2011, the intermediate cylinder 202, the outer cylinder 203, the base valve assembly 204, the first orifice 2041, the bottom end cap 205, the upper end cap 206, the piston assembly 30, the piston 301, the piston rod 302, the check valve assembly 303, the intermediate oil chamber 401, the oil reservoir 402, the piston upper chamber 403, the piston lower chamber 404, and the shock absorber 100.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The solenoid valve 10, the shock absorber 100, and the vehicle according to the embodiment of the present utility model are described in detail below with reference to fig. 1 to 9.

Referring to fig. 1 and 2, the electromagnetic valve 10 according to the embodiment of the utility model may be used for a shock absorber 100, and the electromagnetic valve 10 may be used for adjusting the size of a throttle hole of the shock absorber 100, so as to adjust the damping force of the shock absorber 100, and further, when the shock absorber 100 is used for a vehicle, the vehicle may adapt to different road conditions, achieve a small damping force on a flat road surface, and a requirement for a large damping force on an off-road surface, and may improve the use range of the shock absorber 100 and increase the comfort of the whole vehicle.

Referring to fig. 1-3, the shock absorber 100 includes a piston assembly 30, a cylinder assembly 20 and a solenoid valve 10, wherein the cylinder assembly 20 is internally provided with a piston cavity, an intermediate oil chamber 401 and an oil storage chamber 402, the piston assembly 30 includes a piston 301 and a piston rod 302 which are connected, the piston rod 302 penetrates through the cylinder assembly 20, the piston 301 is movably arranged in the piston cavity, the piston 301 divides the piston cavity into a piston upper cavity 403 and a piston lower cavity 404, a check valve assembly 303 is arranged on the piston 301, an inlet of the check valve assembly 303 is communicated with the piston lower cavity 404, an outlet of the check valve assembly 303 is communicated with the piston upper cavity 403, and the check valve assembly 303 is used for controlling the unidirectional flow of oil in the piston cavity from the piston lower cavity 404 to the piston upper cavity 403.

The piston lower chamber 404 communicates with the oil reservoir chamber 402 through the first orifice 2041, the piston upper chamber 403 communicates with the intermediate oil chamber 401 through the second orifice 2011, the medium inlet 26 of the solenoid valve 10 communicates with the intermediate oil chamber 401, the medium outlet 27 of the solenoid valve 10 communicates with the oil reservoir chamber 402, the solenoid valve 10 can form an orifice structure between the intermediate oil chamber 401 and the oil reservoir chamber 402, and the solenoid valve 10 can adjust the damping force of the shock absorber 100 by controlling the flow area of the medium inlet 26 and the medium outlet 27.

During the compression process of the shock absorber 100, the piston assembly 30 moves toward the lower piston chamber 404, the volume of the lower piston chamber 404 decreases, the volume of the upper piston chamber 403 increases, the pressure of hydraulic oil in the lower piston chamber 404 increases, a part of hydraulic oil directly enters the oil reservoir 402 through the first orifice 2041, another part of hydraulic oil enters the upper piston chamber 403 through the check valve assembly 303, then enters the intermediate oil chamber 401 through the second orifice 2011, and then enters the oil reservoir 402 through the solenoid valve 10.

During the restoration process of the shock absorber 100, the piston assembly 30 moves toward the upper piston chamber 403, the volume of the upper piston chamber 403 decreases, the volume of the lower piston chamber 404 increases, the pressure of the hydraulic oil in the upper piston chamber 403 increases, the check valve assembly 303 prevents the hydraulic oil from entering the lower piston chamber 404, the hydraulic oil can only enter the intermediate oil chamber 401 through the second orifice 2011, and then enter the oil reservoir 402 through the solenoid valve 10, and at the same time, the hydraulic oil in the oil reservoir 402 enters the lower piston chamber 404 through the first orifice 2041.

Thus, during the compression and recovery process of the shock absorber 100, hydraulic oil needs to flow through the electromagnetic valve 10, and the flow direction of the hydraulic oil is from the medium inlet 26 to the medium outlet 27, because the opening size of the electromagnetic valve 10 can be adjusted by current, in other words, the flow area of the medium inlet 26 and the medium outlet 27 of the electromagnetic valve 10 can be adjusted, the damping force of the shock absorber 100 during the compression and recovery process can be adjusted.

Referring to fig. 3 to 6, the solenoid valve 10 according to the embodiment of the present utility model includes: the first valve body 1 and the second valve body 2, the first valve body 1 comprises a first shell 11, a driving coil 12, an armature 13, a mounting seat 14 and a first valve core 15, wherein the driving coil 12 and the mounting seat 14 are fixedly arranged on the first shell 11, the first valve core 15 penetrates through the mounting seat 14 and is fixed with the armature 13, and when the driving coil 12 is powered down, a first space 31 is defined by the first valve core 15 and the mounting seat 14.

The second valve body 2 includes a second housing 21, a second valve core 22, an elastic member 23 and a valve housing 24, the second housing 21 is fixedly arranged in the first housing 11 and forms a medium flow channel 4 with the first housing 11, the second valve core 22 is movably arranged in the second housing 21 and forms a second space 32 together with the second housing 21, the valve housing 24 is fixedly arranged in the second housing 21 and is communicated with the second space 32, a peripheral wall of the valve housing 24 is provided with a first communication hole 241, a part of the first valve core 15 is arranged in the valve housing 24 and forms a third space 33 with the second housing 21, the third space 33 is communicated with the first communication hole 241 and the first space 31, and the first valve core 15 is provided with a second communication hole 153 for communicating the first space 31 and the medium flow channel 4.

When the driving coil 12 is powered down, the first valve core 15 does not cover the first communication hole 241, and when the driving coil 12 is powered up, the driving coil 12 drives the armature 13 to drive the first valve core 15 to move so that a communication gap 5 for communicating the first space 31 with the medium flow channel 4 is formed between the first valve core 15 and the mounting seat 14, and the first valve core 15 at least partially covers the first communication hole 241.

The elastic member 23 is disposed in the second space 32, and two ends of the elastic member 23 are respectively connected with the second spool 22 and the second housing 21 along the moving direction of the second spool 22, the second housing 21 has a medium inlet 26 and a medium outlet 27, the medium inlet 26 is in communication with the second space 32, and the second spool 22 selectively connects or disconnects the medium inlet 26 and the medium outlet 27.

Therefore, the position of the second valve core 22 can be adjusted by controlling the current of the driving coil 12, so that the flow area between the medium inlet 26 and the medium outlet 27 is adjusted, namely the flow area between the medium inlet 26 and the medium outlet 27 is the opening size of the electromagnetic valve 10, and when the electromagnetic valve 10 is used for the shock absorber 100, the damping force of the shock absorber 100 can be adjusted.

As shown in fig. 7, when the driving coil 12 is powered down (when the current is 0A), the damper 100 has a certain damping, and when the driving coil 12 is powered up and the current increases, the damping force of the damper 100 is reduced and then increased, so that the solenoid valve 10 still has a certain opening in the powered down state to form a throttling effect, and the damping force of the damper 100 is moderate, thereby being beneficial to reducing the energy consumption of the solenoid valve 10.

Referring to fig. 4, when the driving coil 12 is powered down, the current supplied to the driving coil 12 is 0A, the first valve core 15 does not cover the first communication hole 241, when the shock absorber 100 is compressed and restored, the pressure of the hydraulic oil at the medium inlet 26 is greater than the pressure at the medium outlet 27 and the medium outlet 4, at this time, as shown by the arrow in fig. 4, the first hydraulic oil can flow from the medium inlet 26 into the second space 32, then sequentially through the valve housing 24, the first communication hole 241, the third space 33, the first space 31 and the second communication hole 153, and then flow out of the electromagnetic valve 10 through the outlet of the medium flow 4, at this time, the pressure of the hydraulic oil in the second space 32 is less than the pressure of the hydraulic oil at the medium inlet 26, so that the hydraulic oil at the medium inlet 26 lifts the second valve core 22 and compresses the elastic member 23, the second valve core 22 and the second housing 21 form an opening of the electromagnetic valve 10 between the medium inlet 26 and the medium outlet 27, and the second hydraulic oil can flow to the medium outlet 27 through the medium inlet 26 and the opening of the electromagnetic valve 10, and the second hydraulic oil can flow to the medium outlet 27 through the opening of the electromagnetic valve 10, thereby, when the electromagnetic valve 10 is not powered up, the hydraulic oil can also form a differential pressure of the electromagnetic valve 10 under the action of the two sides of the electromagnetic valve 22, and the damping force of the electromagnetic valve 100 can be formed. It should be noted that, the flow rate of the second hydraulic oil is far greater than that of the first hydraulic oil, which is mainly used for adjusting the differential pressure across the second spool 22.

Referring to fig. 5 and 6, when the driving coil 12 is powered on, the electromagnetic force applied to the armature 13 by the driving coil 12 causes the armature 13 to drive the first valve core 15 to move toward the valve housing 24, in the moving process of the first valve core 15, the first valve core 15 gradually shields the first communication hole 241, meanwhile, a communication gap 5 communicating the first space 31 with the medium flow channel 4 is formed between the first valve core 15 and the mounting seat 14, the communication gap 5 gradually increases from zero, the increasing speed of the flow area of the communication gap 5 can be greater than the decreasing speed of the flow area of the first communication hole 241 in the process of starting shielding the first communication hole 241 to completely shielding the first communication hole 241 by the first valve core 15, the flow rate of hydraulic oil flowing out from the second space 32 to the medium flow channel 4 is increased and then decreased, the opening of the electromagnetic valve 10 formed by the second valve core 22 is also synchronously increased and then decreased, the damping force of the damper 100 is synchronously decreased and then increased until the first valve core 15 completely shields the first communication hole 241, the hydraulic oil in the second space 32 cannot flow out through the first communication hole 241, the pressure of the hydraulic oil on both sides of the second valve core 22 is the same, the pressure of the hydraulic oil 22 can be greater than the decreasing speed of the flow area of the first valve core 22, the hydraulic oil can be reset by the elastic member 23, the valve 26 is reset, the maximum value of the damper 10 is not connected with the medium, and the damper 100 is closed, and the damper 27 is closed, the medium is not closed.

Referring to fig. 5, when the driving coil 12 is changed from 0A current to 0.3A current, the armature 13 drives the first valve element 15 to move toward the valve housing 24, and makes the first valve element 15 block the portion of the first communication hole 241, and a communication gap 5 is formed between the first valve element 15 and the mounting seat 14, which communicates the first space 31 and the medium flow channel 4, and the hydraulic oil flows in the direction of arrow in fig. 5, the high-pressure hydraulic oil of the medium inlet 26 can flow into the second space 32, then flows into the medium flow channel 4 through the second communication hole 153 and the communication gap 5 after flowing into the first space 31 in sequence, and finally flows out of the electromagnetic valve 10 from the outlet of the medium flow channel 4, at this time, the hydraulic oil flow from the second space 32 to the outlet of the medium flow channel 4 is the largest, the hydraulic oil flow from the opening of the electromagnetic valve 10 to the medium outlet 27 is the largest under the action of the differential pressure on both sides of the second valve element 22, and the damping force of the damper 100 is the smallest.

Referring to fig. 6, when the current of the driving coil 12 is changed from 0.3A to 0.9A, the armature 13 drives the first valve element 15 to move toward the valve housing 24, and the first valve element 15 blocks the whole of the first communication hole 241, the oil passage between the second space 32 and the medium flow passage 4 is disconnected by the first valve element 15 at the first communication hole 241, at this time, the pressure of the hydraulic oil in the second space 32 is the same as the pressure of the hydraulic oil in the medium inlet 26, the second valve element 22 is reset under the action of the elastic member 23, the opening of the electromagnetic valve 10 is closed, the medium inlet 26 is not communicated with the medium outlet 27, and at this time, the damping force of the shock absorber 100 is at the maximum.

Referring to fig. 4 to 7, in the process of increasing the current supplied to the driving coil 12 from 0A to the maximum, the opening of the solenoid valve 10 formed between the medium inlet 26 and the medium outlet 27 has a throttle function, and the throttle area of the opening of the solenoid valve 10 tends to increase first and then decrease, and the damping force of the shock absorber 100 tends to decrease first and then increase.

According to the electromagnetic valve 10 of the embodiment of the utility model, the medium flow channel 4 is formed between the second housing 21 and the first housing 11, when the driving coil 12 is powered down, the first valve core 15 does not cover the first communication hole 241, the damping force of the shock absorber 100 is between the maximum value and the minimum value, when the driving coil 12 is powered up, the first valve core 15 and the mounting seat 14 form the communication gap 5 for communicating the first space 31 and the medium flow channel 4, and the first valve core 15 at least partially covers the first communication hole 241 so as to control the pressure of the second space 32 at the upper end of the second valve core 22, further control the opening of the electromagnetic valve 10, realize the adjustment of the damping force of the shock absorber 100, the electromagnetic valve 10 can control the pressure difference at both sides of the second valve core 22 through smaller current, further realize the control of the flow area between the medium inlet 26 and the medium outlet 27, and the electromagnetic valve 10 has lower energy consumption and better economical efficiency.

In some embodiments of the present utility model, referring to fig. 3 and 8, the first spool 15 includes: the first valve core 151 and the second valve core 152, the second valve core 152 is sleeved outside the first valve core 151, the first valve core 151 is fixed with the armature 13, one end of the first valve core 151 is installed in the valve sleeve 24, the armature 13 can drive the first valve core 151 to move in the valve sleeve 24 so as to adjust whether the first valve core 151 shields the first communication hole 241, a third space 33 is formed between the second valve core 152 and the second shell 21, hydraulic oil flowing out of the first communication hole 241 can flow to the first space 31 through the third space 33, and meanwhile, a throttling effect can be formed at the first communication hole 241.

Referring to fig. 3 and 8, the first valve core 151 is provided with a central through hole 155, and the central through hole 155 can be communicated with hydraulic oil at two ends of the first valve core 151, so that the hydraulic oil at two ends of the first valve core 151 is balanced in pressure, and the armature 13 can drive the first valve core 15 to move with a small force.

In some embodiments of the present utility model, referring to fig. 3 and 8, the second valve core 152 includes: the first sub-core 1521 and the second sub-core 1522, the first sub-core 1521 is annular, at least a portion of the outer peripheral surface of the first sub-core 1521 may be attached to the second housing 21 to ensure the stability of the movement of the first valve core 15, the second sub-core 1522 is connected between the first sub-core 1521 and the first valve core 151 to define a tank structure that is open toward the mounting seat 14, that is, the second sub-core 1522 may form a tank bottom of the tank structure, the first sub-core 1521 may form a side wall of the tank structure, the tank structure and the mounting seat 14 define a first space 31, and the communication gap 5 between the first sub-core 1521 and the mounting seat 14 is 0 when the first sub-core 1521 is abutted against the mounting seat 14, and when the driving coil 12 is powered on, the communication gap 5 that communicates the first space 31 and the medium flow channel 4 is formed between the first valve core 15 and the mounting seat 14, thereby realizing rapid adjustment of the hydraulic oil pressure in the second space 32.

Referring to fig. 3 and 8, the first sub-core 1521 is a circular cylinder, the second sub-core 1522 is a circular plate, the second sub-core 1522 is sleeved on the radial outer side of the first sub-core 1521, the inner ring of the second sub-core 1522 is connected to the first sub-core 1521, and the outer ring of the second sub-core 1522 is connected to the inner side of the first sub-core 1521.

In some embodiments of the present utility model, referring to fig. 3 and 8, the second sub-core 1522 has a third communication hole 154, the third communication hole 154 communicating the tank structure and the third space 33, that is, hydraulic oil in the third space 33 may flow to the first space 31 through the third communication hole 154 to ensure that hydraulic oil flowing out of the first communication hole 241 to the third space 33 may flow to the first space 31 through the third communication hole 154, and then hydraulic oil of the first space 31 flows to the medium flow passage 4, thereby achieving adjustment of the opening degree of the electromagnetic valve 10.

In some embodiments of the present utility model, referring to fig. 3, the valve housing 24 has a housing end wall fixedly connected to a peripheral wall of the valve housing 24 to define a mounting groove having one end opened, the first communication hole 241 communicates with the mounting groove, a portion of the first valve core 15 is mounted in the mounting groove, the peripheral wall of the valve housing 24 can radially limit the first valve core 15 to prevent the first valve core 15 from being radially deflected, the housing end wall has a fourth communication hole 242, the fourth communication hole 242 communicates with the mounting groove and the second space 32, and hydraulic oil in the second space 32 can flow into the mounting groove of the valve housing 24 through the fourth communication hole 242, thereby achieving adjustment of the hydraulic oil pressure in the second space 32.

In some embodiments of the present utility model, referring to fig. 3 and 9, the second housing 21 has a housing end wall 2111 and a housing side wall 2112 opposite to the first housing 11, the housing end wall 2111 is formed with a first flow channel groove 21111, the housing side wall 2112 is formed with a second flow channel groove 21121, the first flow channel groove 21111 and the second flow channel groove 21121 are configured as part of the medium flow channel 4, the first flow channel groove 21111 is adapted to guide the medium to flow to the second flow channel groove 21121, and the arrangement of the first flow channel groove 21111 and the second flow channel groove 21121 ensures that the second housing 21 is fixedly connected with the first housing 11 while the second housing 21 and the first housing 11 form a clear medium flow channel 4 therebetween.

Referring to fig. 3 and 9, the first and second flow channels 21111 and 21121 are each formed as a groove structure, so that even when the housing end wall 2111 is abutted against the first housing 11, the first flow channel 21111 and the first housing 11 are not bonded to each other to form a part of the medium flow channel 4, the housing side wall 2112 of the second housing 21 is riveted to the first housing 11, and when the housing side wall 2112 of the second housing 21 is abutted against the first housing 11, the second flow channel 21121 and the first housing 11 are not bonded to each other to form another part of the medium flow channel 4, the first and second flow channels 21111 and 21121 are simply processed, and the reliability of the medium flow channel 4 is high.

In some embodiments of the present utility model, referring to fig. 3, the first housing 11 has an annular groove 1111 recessed toward the inside of the first housing 11, where the outlet of the medium flow channel 4 is adjacent to the medium outlet 27, the annular groove 1111 corresponds to the outlet of the medium flow channel 4, the annular groove 1111 may form a buffer area at the medium outlet 27, and when the flow rate of the medium outlet 27 is large, the buffer area formed by the annular groove 1111 may reduce hydraulic oil flowing out from the medium outlet 27 from obstructing the outlet of the medium flow channel 4, so as to ensure that the outlet of the medium flow channel 4 is smooth.

In addition, the annular groove 1111 is located radially outward of the second housing 21, and after the first housing 11 and the second housing 21 are caulking-assembled, a jig may be inserted into the annular groove 1111 and a force for pinching the annular groove 1111 in the direction of the second housing 21 may be applied to improve the reliability of the connection of the first housing 11 and the second housing 21.

In some embodiments of the present utility model, referring to fig. 3, the second valve core 22 has a fifth communication hole 221, the fifth communication hole 221 communicates the medium inlet 26 and the second space 32, the high-pressure oil of the medium inlet 26 can flow into the second space 32 through the fifth communication hole 221, the fifth communication hole 221 can form a throttling effect to reduce the pressure of the hydraulic oil flowing into the second space 32, so that the second valve core 22 forms a pressure difference towards the second space 32 and towards both sides of the medium inlet 26, and the second valve core 22 can move under the action of the pressure difference to adjust the flow area between the medium inlet 26 and the medium outlet 27.

In some embodiments of the present utility model, the number of the first communication holes 241, the second communication holes 153, the third communication holes 154, the fourth communication holes 242, and the fifth communication holes 221 is one or more, the total flow area of all the first communication holes 241 is S1, the total flow area of all the second communication holes 153 is S2, the total flow area of all the third communication holes 154 is S3, the total flow area of all the fourth communication holes 242 is S4, the total flow area of all the fifth communication holes 221 is S5, and S1, S2, S3, S4, S5 satisfy the relation: s5 < S2 < S4 < S1 < S3, that is, the total flow area of the fifth communication hole 221 is the smallest to ensure the throttling effect at the fifth communication hole 221, so that the second valve core 22 forms a pressure difference towards the second space 32 and towards the two sides of the medium inlet 26, the total flow area of the second communication hole 153 is the second smallest to ensure that the second communication hole 153 can discharge the pressure in the second space 32, and the total flow area of the fourth communication hole 242, the first communication hole 241 and the third communication hole 154 sequentially increases on the flow path from the fifth communication hole 221 to the second communication hole 153 to ensure smooth flow of oil.

Alternatively, the number of the first communication holes 241 is 4 to 8, the number of the second communication holes 153 is 1 to 8, the number of the third communication holes 154 is 4 to 6, the number of the fourth communication holes 242 is 1 to 4, and the number of the fifth communication holes 221 is 1 to 2.

Referring to fig. 3, the first housing 11 includes an outer housing 111, a magnetism isolating ring 112 and an inner housing 113, the magnetism isolating ring 112 and the inner housing 113 are all disposed at the inner side of the outer housing 111, the inner housing 113 and the outer housing 111 are connected through the magnetism isolating ring 112, the driving coil 12 includes a coil body 121 and a socket 122, the coil body 121 is wound between the outer housing 111 and the inner housing 113, the socket 122 is electrically connected with the coil body 121, the socket 122 is suitable for accessing external current, the mounting seat 14 is fixedly connected with the first outer housing 111, the first valve core 15 movably penetrates through the mounting seat 14, a second elastic member 16 is further disposed between the mounting seat 14 and the armature 13, when the driving coil 12 is powered on, the first valve core 15 is driven to move towards the valve sleeve 24 under the electromagnetic force of the armature 13, the second elastic member 16 is compressed, when the driving coil 12 is powered off, the second elastic member 16 can push the armature 13 to reset towards the direction away from the valve sleeve 24, and the armature 13 drives the first valve core 15 to move towards the direction away from the valve sleeve 24.

Referring to fig. 3, the second housing 21 includes a valve seat 211 and a valve cover 212, the valve seat 211 is in threaded engagement with the valve cover 212, the valve seat 211 and the valve cover 212 may be provided with a gasket 25 at an axially engaged end, the gasket 25 adjusts a relative position of the valve seat 211 and the valve cover 212 in an axial direction, so that when the valve seat 211 and the valve cover 212 have a machining error, the gasket 25 ensures a positional accuracy of the valve seat 211 and the valve cover 212, the number of the gaskets 25 may be 0 to 5, the valve seat 211 and the valve cover 212 together define an installation space, the valve cover 212 defines a medium inlet 26 in communication with the installation space, the valve seat 211 defines a medium outlet 27 in communication with the installation space, the second valve core 22 is disposed in the installation space, the elastic member 23 is stopped against the valve seat 211 and the second valve core 22, and when the second valve core 22 is stopped against the valve cover 212, the second valve core 22 breaks the medium inlet 26 and the medium outlet 27, and when the second valve core 22 is separated from the valve cover 212, the medium inlet 26 and the medium outlet 27 are turned on.

Referring to fig. 3, the first housing 11 is further provided with an avoidance groove, which defines a fourth space 34 together with the mounting seat 14, the first valve element 15, and the second housing 21, and the fourth space 34 communicates with the second communication hole 153, the medium flow passage 4, and the communication gap 5, respectively.

According to the electromagnetic valve 10 of the embodiment of the utility model, the electromagnetic valve 10 has a two-stage control structure, the two-stage control structure is respectively a pilot stage and a main oil circuit stage, the pilot stage can comprise a first valve core 15, an installation seat 14 and a second elastic piece 16, the main oil circuit stage can comprise a second valve core 22, a valve seat 211, a valve cover 212 and an elastic piece 23, the flow area of a medium inlet 26 and a medium outlet 27 of the main oil circuit stage can be changed by controlling the pilot stage oil circuit with smaller current, the electromagnetic valve 10 has small input current, low energy consumption, high response speed, high control precision and good energy-saving effect, meanwhile, the electromagnetic force required for driving the first valve core 15 to move is smaller, the movement of the second valve core 22 is mainly driven by the hydraulic difference at two sides of the electromagnetic valve 10, the driving coil 12 of the electromagnetic valve 10 has compact structure and small occupied space, thereby being beneficial to reducing the volume of the electromagnetic valve 10, in addition, the current connected to the driving coil 12 can be correspondingly adjusted according to different road conditions, thereby being beneficial to realizing the intelligent adjustment of the damper 100 and the vehicle, and the vehicle can adapt to different road conditions and ensuring the comfort and the passing road conditions of the vehicle.

The current connected to the driving coil 12 can be automatically controlled, and a driving computer of the vehicle can sense the current road condition information of the vehicle and control the current connected to the driving coil 12 according to the road condition information so as to adapt the damping force of the shock absorber 100 to the current road condition.

The current supplied to the driving coil 12 can also be manually controlled by a driver, and the vehicle can have the options of a power saving mode, a comfort mode and an off-road mode, when the driver selects the power saving mode, the driving coil 12 is powered down, the damping force of the shock absorber 100 is between the maximum value and the minimum value, and the electromagnetic valve 10 does not consume electricity. When the driver selects the comfort mode, the driving coil 12 can be connected with 0.3A current, at this time, the damping force of the shock absorber 100 is minimum, the vehicle has higher comfort, and the vehicle can select the comfort mode when driving on the urban road, so as to ensure the comfort of the vehicle. When the driver selects the off-road mode, the driving coil 12 can be connected with 0.9A current, and the damping force of the shock absorber 100 is maximum at the moment, so that the stability of the vehicle when the vehicle runs on a soft road surface is ensured, and the off-road capability of the vehicle is improved.

A shock absorber 100 according to another aspect of the present utility model includes the solenoid valve 10 of the above-described embodiment.

Referring to fig. 1 and 2, the shock absorber 100 includes a solenoid valve 10, a piston assembly 30 and a cylinder assembly 20, the cylinder assembly 20 includes an inner cylinder 201, a middle cylinder 202, an outer cylinder 203, a base valve assembly 204, a bottom end cap 205 and an upper end cap 206, one end of the outer cylinder 203 is connected with the bottom end cap 205, the other end of the outer cylinder 203 is connected with the upper end cap 206, the inner cylinder 201 is disposed in the outer cylinder 203, one end of the inner cylinder 201 is connected with the bottom end cap 205 through the base valve assembly 204, the other end of the inner cylinder 201 is connected with the upper end cap 206, the inner cylinder 201, the bottom end cap 205 and the upper end cap 206 define a piston chamber, the middle cylinder 202 is disposed in the outer cylinder 203, the middle cylinder 202 is sleeved on the radial outer side of the inner cylinder 201 and defines a middle oil chamber 401 together with the inner cylinder 201, and the outer cylinder 203 is further provided with an oil storage chamber 402.

The piston assembly 30 comprises a piston 301 and a piston rod 302 which are connected, the piston rod 302 penetrates through the oil cylinder assembly 20, the piston 301 is movably arranged in a piston cavity, the piston 301 divides the piston cavity into a piston upper cavity 403 and a piston lower cavity 404, a one-way valve assembly 303 is arranged on the piston 301, an inlet of the one-way valve assembly 303 is communicated with the piston lower cavity 404, an outlet of the one-way valve assembly 303 is communicated with the piston upper cavity 403, and the one-way valve assembly 303 is used for controlling one-way flow of oil in the piston cavity from the piston lower cavity 404 to the piston upper cavity 403.

The base valve assembly 204 has a first orifice 2041 that communicates the piston lower chamber 404 and the oil reservoir chamber 402, the number of the first orifice 2041 may be one or more, the inner cylinder 201 has a second orifice 2011 that communicates the piston upper chamber 403 and the intermediate oil chamber 401, and the number of the second orifice 2011 may be one or more.

The solenoid valve 10 wears to locate the hydro-cylinder subassembly 20, outer cylinder 203 is equipped with first mounting hole, middle cylinder 202 is equipped with the second mounting hole that corresponds with first mounting hole, solenoid valve 10's first casing 11 has the external screw thread, first mounting hole has with the external screw thread complex internal screw thread of first casing 11, first casing 11 can with first mounting hole screw thread complex, second casing 21 can rivet in the second mounting hole, medium import 26 and middle oil chamber 401 intercommunication, medium export 27 and medium runner 4 all communicate with the oil storage room 402.

During the compression process of the shock absorber 100, the piston assembly 30 moves toward the lower piston chamber 404, the volume of the lower piston chamber 404 decreases, the volume of the upper piston chamber 403 increases, the pressure of hydraulic oil in the lower piston chamber 404 increases, a part of hydraulic oil directly enters the oil reservoir 402 through the first orifice 2041, another part of hydraulic oil enters the upper piston chamber 403 through the check valve assembly 303, then enters the intermediate oil chamber 401 through the second orifice 2011, and then enters the oil reservoir 402 through the solenoid valve 10.

During the restoration process of the shock absorber 100, the piston assembly 30 moves toward the upper piston chamber 403, the volume of the upper piston chamber 403 decreases, the volume of the lower piston chamber 404 increases, the pressure of the hydraulic oil in the upper piston chamber 403 increases, the check valve assembly 303 prevents the hydraulic oil from entering the lower piston chamber 404, the hydraulic oil can only enter the intermediate oil chamber 401 through the second orifice 2011, and then enter the oil reservoir 402 through the solenoid valve 10, and at the same time, the hydraulic oil in the oil reservoir 402 enters the lower piston chamber 404 through the first orifice 2041.

Thus, during the compression and recovery process of the shock absorber 100, hydraulic oil needs to flow through the electromagnetic valve 10, and the flow direction of the hydraulic oil is from the medium inlet 26 to the medium outlet 27, because the opening size of the electromagnetic valve 10 can be adjusted by current, in other words, the flow area of the medium inlet 26 and the medium outlet 27 of the electromagnetic valve 10 can be adjusted, the damping force of the shock absorber 100 during the compression and recovery process can be adjusted.

According to the damper 100 of the embodiment of the utility model, the medium flow channel 4 is formed between the second housing 21 and the first housing 11 of the electromagnetic valve 10, when the driving coil 12 is powered down, the first valve core 15 does not cover the first communication hole 241, the damping force of the damper 100 is between the maximum value and the minimum value, when the driving coil 12 is powered up, the communication gap 5 for communicating the first space 31 and the medium flow channel 4 is formed between the first valve core 15 and the mounting seat 14, the first valve core 15 at least partially covers the first communication hole 241 so as to control the pressure of the second space 32 at the upper end of the second valve core 22, further control the opening of the electromagnetic valve 10, so that the damping force of the damper 100 is regulated, the electromagnetic valve 10 can control the pressure difference at both sides of the second valve core 22 through smaller current, further control the flow area between the medium inlet 26 and the medium outlet 27 is realized, the energy consumption of the electromagnetic valve 10 is lower, and better economy is achieved.

A vehicle according to an embodiment of a further aspect of the utility model includes shock absorber 100 of the above-described embodiment.

According to the vehicle of the embodiment of the utility model, the electromagnetic valve 10 is arranged on the shock absorber 100, the medium flow channel 4 is formed between the second shell 21 and the first shell 11 of the electromagnetic valve 10, the first valve core 15 does not cover the first communication hole 241 when the driving coil 12 is powered down, the damping force of the shock absorber 100 is between the maximum value and the minimum value, when the driving coil 12 is powered up, the communication gap 5 which is communicated with the first space 31 and the medium flow channel 4 is formed between the first valve core 15 and the mounting seat 14, the first valve core 15 at least partially covers the first communication hole 241 so as to control the pressure of the second space 32 at the upper end of the second valve core 22, further control the opening of the electromagnetic valve 10, the adjustment of the damping force of the shock absorber 100 is realized, the electromagnetic valve 10 can control the pressure difference at two sides of the second valve core 22 through smaller current, further the control of the flow area between the medium inlet 26 and the medium outlet 27 is realized, and the energy consumption of the electromagnetic valve 10 is lower, so that the vehicle has better economical efficiency.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A solenoid valve, comprising:

the first valve body (1), first valve body (1) includes first casing (11), driving coil (12), armature (13), mount pad (14) and first case (15), driving coil (12) mount pad (14) all set firmly in first casing (11), first case (15) wear to locate mount pad (14) and with armature (13) are fixed, when driving coil (12) are down first case (15) with mount pad (14) define first space (31);

the second valve body (2), the second valve body (2) includes second casing (21), second case (22), elastic component (23) and valve pocket (24), second casing (21) set firmly in first casing (11) and with form medium runner (4) between first casing (11), second case (22) movably locate in second casing (21) and with second casing (21) jointly define second space (32), valve pocket (24) set firmly in second casing (21) and with second space (32) intercommunication, the perisporium of valve pocket (24) has first communication hole (241), the part of first case (15) install in valve pocket (24) and with be formed with third space (33) between second casing (21), third space (33) intercommunication first communication hole (241) and first space (31), first case (15) have intercommunication first space (31) and medium runner (153);

When the driving coil (12) is powered down, the first valve core (15) does not cover the first communication hole (241), and when the driving coil (12) is powered up, the driving coil (12) drives the armature (13) to drive the first valve core (15) to move so that a communication gap (5) which is communicated with the first space (31) and the medium flow channel (4) is formed between the first valve core (15) and the mounting seat (14), and the first valve core (15) at least partially covers the first communication hole (241);

the elastic piece (23) is arranged in the second space (32), two ends of the elastic piece (23) are respectively connected with the second valve core (22) and the second shell (21) along the moving direction of the second valve core (22), the second shell (21) is provided with a medium inlet (26) and a medium outlet (27), the medium inlet (26) is communicated with the second space (32), and the second valve core (22) selectively conducts or cuts off the medium inlet (26) and the medium outlet (27).

2. The solenoid valve according to claim 1, characterized in that said first spool (15) comprises: the valve comprises a first valve core part (151) and a second valve core part (152), wherein the second valve core part (152) is sleeved outside the first valve core part (151), the first valve core part (151) is fixed with the armature (13), one end of the first valve core part (151) is installed in the valve sleeve (24), and a third space (33) is formed between the second valve core part (152) and the second shell (21).

3. The solenoid valve according to claim 2, characterized in that said second valve core (152) comprises: a first sub-core (1521) and a second sub-core (1522), the first sub-core (1521) being annular, the second sub-core (1522) being connected between the first sub-core (1521) and the first valve core (151) to define a channel structure open towards the mounting block (14).

4. A solenoid valve according to claim 3, characterised in that said second sub-core (1522) has a third communication hole (154), said third communication hole (154) communicating said tank structure and said third space (33).

5. The solenoid valve according to claim 1, wherein the valve housing (24) has a housing end wall fixedly connected with a peripheral wall of the valve housing (24) to define a mounting groove open at one end, the first communication hole (241) communicates with the mounting groove, a portion of the first spool (15) is mounted in the mounting groove, the housing end wall has a fourth communication hole (242), and the fourth communication hole (242) communicates with the mounting groove and the second space (32).

6. The solenoid valve according to claim 1, characterized in that the second housing (21) has a housing end wall (2111) opposite the first housing (11) and a housing side wall (2112), the housing end wall (2111) being formed with a first flow channel groove (21111), the housing side wall (2112) being formed with a second flow channel groove (21121), the first flow channel groove (21111) and the second flow channel groove (21121) being configured as parts of the medium flow channel (4), the first flow channel groove (21111) being adapted to guide a medium flow to the second flow channel groove (21121).

7. A solenoid valve according to claim 1, characterised in that said first housing (11) has an annular groove (1111) recessed into said first housing (11), the outlet of said medium flow channel (4) being contiguous with said medium outlet (27), said annular groove (1111) corresponding to the outlet of said medium flow channel (4).

8. The electromagnetic valve according to claim 1, characterized in that the second spool (22) has a fifth communication hole (221), the fifth communication hole (221) communicating the medium inlet (26) and the second space (32).

9. A shock absorber comprising a solenoid valve according to any one of claims 1-8.

10. A vehicle comprising a shock absorber according to claim 9.