CN219345651U

CN219345651U - Solenoid valve for hydraulic brake

Info

Publication number: CN219345651U
Application number: CN202320611242.9U
Authority: CN
Inventors: 苏志明; 孙震; 李晓龙; 许庆越; 王钊; 侯敏; 苏毅; 李超; 许烨
Original assignee: Feige Intelligent Technology Co ltd
Current assignee: Feige Intelligent Technology Co ltd
Priority date: 2023-03-24
Filing date: 2023-03-24
Publication date: 2023-07-14
Anticipated expiration: 2033-03-24

Abstract

The utility model provides a solenoid valve for hydraulic braking, which comprises a sleeve, a valve body assembly arranged in the sleeve and a valve seat, wherein the sleeve is in butt joint with the valve seat, the sleeve and the valve seat jointly define a space for accommodating the valve body assembly, a liquid inlet and a liquid outlet are formed in the valve seat, the valve body comprises a static core and a movable core, the static core is connected with the sleeve through the cooperation of a press joint protrusion and a press joint groove in interference fit, the movable core slides back and forth along the sleeve and can be switched between a first state and a second state, the movable core seals the liquid outlet in the first state, the movable core releases the seal of the liquid outlet in the second state, and a liquid circulation channel is formed among the liquid inlet, the liquid outlet and the valve seat. According to the electromagnetic valve for hydraulic braking, the sleeve and the static core in the electromagnetic valve are in the form of interference fit, namely the press-fit protrusion and the press-fit groove are matched, so that the sleeve and the static core are connected and fixed, and the sealing performance of the connection between the sleeve and the static core can be improved.

Description

Solenoid valve for hydraulic brake

Technical Field

The utility model relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve for hydraulic braking.

Background

In the braking process of an automobile, the braking force cannot be automatically adjusted to cause locking of the wheel, and the automobile is easy to sideslip and lose control and direction stability. When the rear wheel is locked before the front wheel, and the rear axle sideslips, the automobile can rapidly turn and run away, so that traffic accidents are caused, even if the front wheel is not locked, the automobile has steering capability, and a driver can hardly control the automobile by steering the steering wheel.

In the hydraulic pressure brake control at present, the pressure of a wheel cylinder of a wheel is precisely controlled to realize the regulation function on braking force. The electromagnetic valve prevents the wheel from locking by releasing the pressure of the wheel cylinder, and plays an important role in regulating the pressure of the wheel cylinder.

For the existing electromagnetic valve press-fitting technology, a static core and a magnetism isolating pipe are generally fixed in a welding mode. When the electromagnetic valve works, a great pressure is required to be born, and the electromagnetic valve needs good sealing performance. However, in the welding process, the welding part is easy to crack, the welding seam has the risk of hydraulic oil leakage, and the tightness of the electromagnetic valve is reduced. Meanwhile, the process of welding the static core and the magnetism isolating pipe by adopting welding equipment also improves the complexity of the process, increases the investment of equipment, and can generate welding slag and other harmful gases during welding, and the cost of periodic maintenance and maintenance of the welding equipment is higher.

Disclosure of Invention

In view of the above, the present utility model aims to provide a solenoid valve for hydraulic braking to improve the sealability of the solenoid valve while reducing the production cost.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the electromagnetic valve for hydraulic braking comprises a sleeve, a valve body assembly arranged in the sleeve and a valve seat;

the sleeve is in abutting connection with the valve seat, the sleeve and the valve seat jointly define a space for accommodating the valve body assembly, and the valve seat is provided with a liquid inlet and a liquid outlet;

the valve body comprises a static core and a movable core, the static core is connected with the sleeve in a matched manner through a press-connection protrusion and a press-connection groove in interference fit, and the movable core slides back and forth along the sleeve and can be switched between a first state and a second state;

in the first state, the movable core is used for blocking the liquid outlet, in the second state, the movable core is used for unblocking the liquid outlet, and a liquid circulation channel is formed among the liquid inlet, the liquid outlet and the valve seat.

Further, a reset piece is arranged between the static core and the movable core, and the reset piece is used for driving the movable core to slide and reset from the second state to the first state relative to the sleeve.

Further, an electromagnetic coil is arranged on the sleeve, the electromagnetic coil is electrically communicated with the static core, and the static core is magnetically connected with the movable core and can drive the movable core to slide to the second state.

Further, move the core and include moving the core body and locating move the ball valve on the core body, the ball valve with move the core body riveting and link to each other, the ball valve is used for shutoff the liquid outlet.

Further, an orifice is arranged on the valve seat and communicated with the liquid outlet, and the ball valve is driven to be capable of plugging the orifice.

Further, the orifice of the orifice is disposed to be gradually larger in a direction toward the ball valve.

Further, the crimping protrusion is disposed on the sleeve, the crimping groove is disposed on the stationary core, and the crimping protrusion is capable of being embedded into the crimping groove to define a position of the stationary core relative to the sleeve.

Further, the electromagnetic valve for hydraulic braking further comprises a pressing sleeve, the pressing sleeve can be sleeved on the sleeve, and the pressing sleeve is connected with an external component in a clamping mode to limit the position of the sleeve.

Further, a supporting portion is arranged on the sleeve, one side of the supporting portion is abutted to the valve seat, and the pressing sleeve is abutted to the other side of the supporting portion.

Further, the electromagnetic valve for hydraulic braking further comprises an annular filter screen, and the annular filter screen is arranged corresponding to the liquid inlet.

Compared with the prior art, the utility model has the following advantages:

according to the electromagnetic valve for hydraulic braking, the sleeve and the static core in the electromagnetic valve are in the form of interference fit, namely the press-fit protrusion and the press-fit groove are matched, so that the sleeve and the static core are connected and fixed, and the sealing performance of the connection between the sleeve and the static core can be improved.

In addition, be equipped with the piece that resets between quiet core and moving the core for order about to move the core and slide to first state by the second state, its simple structure is convenient for set up. An electromagnetic coil which is electrically communicated with the static core is arranged on the sleeve, so that power is conveniently provided for the movement of the movable core along the sleeve. The movable core is used for plugging the liquid inlet through the ball valve, and is simple in structure and convenient to set. The throttle hole is arranged on the valve seat, so that the flow of liquid can be effectively controlled, and the valve seat can maintain certain pressure. The orifice side of orifice is gradually big to set up, is convenient for cooperate with the ball valve to have better leakproofness.

In addition, with the protruding setting of crimping on the sleeve pipe, the crimping groove sets up on quiet core, its simple structure, the setting of being convenient for. The electromagnetic valve is internally provided with the pressing sleeve, so that the position of the sleeve can be conveniently limited, and the sleeve is prevented from generating displacement. The sleeve is provided with the supporting part, so that the sleeve can be conveniently contacted with the valve seat and the pressing sleeve, and the sleeve is simple in structure and convenient to set. Still be equipped with annular filter screen in the solenoid valve, can increase filtration area, effectively reduce the circulation resistance because of filtering brings, improve the circulation resistance of solenoid valve greatly.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a cross-sectional view of a solenoid valve for hydraulic braking according to an embodiment of the present utility model;

fig. 2 is an enlarged view at a in fig. 1.

Reference numerals illustrate:

1. a sleeve; 101. a crimping protrusion; 102. a support part;

2. a valve body assembly; 201. a stationary core; 202. a movable core; 2021. a movable core body; 2022. a ball valve; 203. a reset member;

3. a valve seat; 301. a liquid inlet; 302. a liquid outlet; 303. an orifice; 4. pressing the sleeve; 5. an annular filter screen.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "back", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present 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 relative importance.

Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between 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 in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The present embodiment relates to a hydraulic brake solenoid valve that includes, in its entire configuration, a sleeve 1, a valve body assembly 2 provided in the sleeve 1, and a valve seat 3, as shown in fig. 1.

Wherein, sleeve pipe 1 and disk seat 3 butt link to each other, and sleeve pipe 1 and disk seat 3 jointly define the space that holds valve body subassembly 2, are equipped with inlet 301 and outlet 302 on the disk seat 3. In addition, the valve body comprises a static core 201 and a movable core 202, wherein the static core 201 is matched and connected with the sleeve 1 through the press joint protrusion 101 and the press joint groove of the interference fit, and the movable core 202 slides back and forth along the sleeve 1 and can be switched between a first state and a second state.

In the first state, the liquid outlet 302 is blocked by the movable core 202, in the second state, the blocking of the liquid outlet 302 by the movable core 202 is released, and a liquid circulation channel is formed among the liquid inlet 301, the liquid outlet 302 and the valve seat 3.

The electromagnetic valve for hydraulic braking of the embodiment adopts the mode that the sleeve 1 and the static core 201 in the electromagnetic valve are matched with each other by the press joint protrusion 101 and the press joint groove which are in interference fit, so that the connection and the fixation between the sleeve 1 and the static core 201 are realized, and the sealing performance of the connection between the sleeve and the static core can be improved.

Based on the overall description of the above structure, an exemplary structure of the solenoid valve for hydraulic braking of the present embodiment is shown in fig. 1, in which the bottom of the sleeve 1 abuts against the valve seat 3, and the valve seat 3 is fixed to the hydraulic braking system of the vehicle for achieving adjustment of the wheel cylinder brake hydraulic pressures of different wheels.

In a preferred embodiment, the sleeve 1 is provided with a support 102, and one side of the support 102 is in contact with the valve seat 3. Referring to fig. 1, the sleeve 1 is provided with a diameter of a side abutting against the valve seat 3 being widened, and a step is formed in the sleeve 1, and this step is referred to herein as the aforementioned support 102. The top of the valve seat 3 is penetrated in the step and is abutted against the inner side of the step surface.

In order to ensure the position of the sleeve 1 to be fixed, in this embodiment, the electromagnetic valve for hydraulic braking further includes a pressing sleeve 4, the pressing sleeve 4 is sleeved on the sleeve 1, and the pressing sleeve 4 is connected with other structures on the hydraulic braking system in a clamping manner so as to limit the position of the sleeve 1. Referring to fig. 1, the pressing sleeve 4 is provided in a ring shape, the pressing sleeve 4 is outwardly stepped, the pressing sleeve 4 is sleeved on the sleeve 1 and is abutted against the outer side surface of the step, and meanwhile, the pressing sleeve 4 is connected with an external hydraulic brake system in a clamping manner, so that the position of the sleeve 1 is limited.

In this state, the sleeve 1 and the valve seat 3 together define a space accommodating the valve body assembly 2. In this embodiment, referring to fig. 1, a liquid inlet 301 and a liquid outlet 302 are provided in the valve seat 3, and for convenience of processing, the liquid inlet 301 is provided in a side wall of the valve seat 3, and the liquid outlet 302 is provided in a bottom of the valve seat 3.

In addition, the valve body assembly 2 includes a stationary core 201 fixedly connected to the sleeve 1, and a movable core 202 capable of sliding within the sleeve 1. When the movable core 202 slides along the sleeve 1, the liquid outlet 302 can be blocked. As a preferred embodiment, the sleeve 1 is provided with an electromagnetic coil (not shown in the figure), the electromagnetic coil is electrically connected with the stationary core 201, and the stationary core 201 and the movable core 202 adopt suitable materials such as an electromagnet, and in the state that the electromagnetic coil is electrified, the stationary core 201 and the movable core 202 can be magnetically connected and can drive the movable core 202 to slide to the second state. In this embodiment, the state of the movable core 202 when the liquid outlet 302 is blocked is a first state, and the state of the movable core 202 magnetically connected to the stationary core 201 is a second state.

In addition, in the present embodiment, a reset element 203 is disposed between the stationary core 201 and the movable core 202, and the reset element 203 is configured to drive the movable core 202 to slide and reset from the second state to the first state relative to the sleeve 1. As a particularly preferred embodiment, the return member 203 is provided as a spring, one end of which is connected to the stationary core 201, and the other end of which is connected to the movable core 202, and in the state where the electromagnetic coil is energized, the magnetic attraction between the stationary core 201 and the movable core 202 is connected, so that the spring is compressed. When the electromagnetic coil is powered off, the movable core 202 is far away from the static core 201 and slides to the liquid outlet 302 under the action of the elastic force of the spring, so as to block the liquid outlet 302.

Under the electrified state of the electromagnetic coil, magnetic attraction is generated between the static core 201 and the movable core 202, the movable core 202 is driven to move towards the static core 201 by magnetic force, at the moment, the movable core 202 releases the blocking of the liquid outlet 302, and a communicated liquid circulation channel is formed among the liquid inlet 301, the valve seat 3 and the liquid outlet 302, so that hydraulic oil can pass conveniently. In the power-off state of the electromagnetic coil, the movable core 202 slides towards the liquid outlet 302 under the driving of the elastic force of the spring, and finally blocks the liquid outlet 302 to block the liquid circulation channel.

In this embodiment, as a preferred embodiment, referring to fig. 1, the moving core 202 includes a moving core body 2021 and a ball valve 2022 disposed on the moving core body 2021, where the ball valve 2022 is riveted with the moving core body 2021, and the ball valve 2022 is used for sealing the liquid inlet 301. The structure is simple, and the design and the processing are convenient. Of course, it is understood that the movable core 202 may be configured in other manners in this embodiment, which is not specifically limited herein.

In the present embodiment, the valve seat 3 is provided with the orifice 303, and the orifice 303 is provided in communication with the liquid outlet 302, and the ball valve 2022 is used to seal the orifice 303, so that the flow rate of the hydraulic oil flowing out of the valve seat 3 can be effectively controlled, and the pressure in the valve seat 3 can be kept stable.

To ensure tightness between the ball valve 2022 and the orifice 303, as a preferred embodiment, the orifice of the orifice 303 is provided to be gradually larger in a direction toward the ball valve 2022. Allowing a portion of the ball valve 2022 to enter the orifice of the orifice 303 for better sealing.

The stationary core 201 is fixedly connected to the sleeve 1. And as a particularly preferred embodiment, with reference to fig. 1 and 2, the above-mentioned crimp projections 101 are provided on the sleeve 1, the above-mentioned crimp grooves are provided on the stationary core 201, and the crimp projections 101 can be inserted into the crimp grooves to define the position of the stationary core 201 relative to the sleeve 1. In order to ensure the connection effect between the static core 201 and the sleeve 1, in this embodiment, the press-connection protrusion 101 is an annular protrusion disposed on the inner side of the sleeve 1, and the press-connection groove is an annular groove disposed on the static core 201, so that the connection effect between the static core 201 and the sleeve 1 can be enhanced.

Of course, the structural forms of the crimp projections 101 and the crimp grooves in the present embodiment are not limited to the annular form, but may be a form in which a plurality of crimp projections 101 are provided on the sleeve 1 at intervals, and a plurality of crimp grooves corresponding to a plurality of crimp projections 101 are provided on the stationary core 201 at intervals, and may be provided according to actual situations, which is not particularly limited herein.

In this embodiment, referring to fig. 2, the crimp protrusion 101 is configured in a triangular shape, and the crimp groove is correspondingly configured in a triangular groove, so that the crimp protrusion 101 and the crimp groove have a better mating connection effect. It is to be understood that the shape of the press-fit protrusion 101 is not limited to the triangular shape, but may be a semicircular shape or an elongated shape, and is not particularly limited herein, and may be set according to actual circumstances.

It should be noted that, in this embodiment, the crimp protrusion 101 on the sleeve 1 and the crimp groove on the stationary core 201 are completely attached, and compared with the connection mode of the welding process, the sealing performance of the connection between the sleeve 1 and the stationary core 201 can be effectively improved, and meanwhile, the seal structure has higher compressive strength. In addition, the welding defect caused by the welding process can be effectively avoided, and the gas pollution of the welding equipment in the welding process is reduced.

In addition, in this embodiment, as a preferred embodiment, as shown in fig. 1, the electromagnetic valve for hydraulic braking further includes an annular strainer 5, and the annular strainer 5 is disposed corresponding to the liquid inlet 301. Through setting up annular filter screen 5, can increase filtration area, effectively reduce the circulation resistance because of filtering brings, improve the circulation resistance of solenoid valve greatly.

The electromagnetic valve for hydraulic braking of the embodiment can improve the tightness between the static core 201 and the sleeve 1 by connecting the static core 201 and the sleeve 1 in a press fit manner between the press fit protrusion 101 and the press fit groove, reduce the welding defects caused by the traditional welding process, reduce the use of equipment, reduce the production cost, reduce the gas generated by welding and pollute the environment.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. An electromagnetic valve for hydraulic braking is characterized in that:

comprises a sleeve (1), a valve body assembly (2) arranged in the sleeve (1) and a valve seat (3);

the sleeve (1) is connected with the valve seat (3) in an abutting mode, the sleeve (1) and the valve seat (3) jointly define a space for accommodating the valve body assembly (2), and the valve seat (3) is provided with a liquid inlet (301) and a liquid outlet (302);

the valve body comprises a static core (201) and a movable core (202), the static core (201) is connected with the sleeve (1) in a matched manner through a press joint protrusion (101) in interference fit and a press joint groove, and the movable core (202) slides back and forth along the sleeve (1) and can be switched between a first state and a second state;

in the first state, the movable core (202) seals the liquid outlet (302), in the second state, the movable core (202) releases the sealing of the liquid outlet (302), and a liquid circulation channel is formed between the liquid inlet (301), the liquid outlet (302) and the valve seat (3).

2. The electromagnetic valve for hydraulic braking according to claim 1, characterized in that:

a reset piece (203) is arranged between the static core (201) and the movable core (202), and the reset piece (203) is used for driving the movable core (202) to slide and reset from the second state to the first state relative to the sleeve (1).

3. The electromagnetic valve for hydraulic braking according to claim 1, characterized in that:

the sleeve (1) is provided with an electromagnetic coil, the electromagnetic coil is electrically communicated with the static core (201), the static core (201) is magnetically connected with the movable core (202), and the movable core (202) can be driven to slide to the second state.

4. The electromagnetic valve for hydraulic braking according to claim 1, characterized in that:

the movable core (202) comprises a movable core body (2021) and a ball valve (2022) arranged on the movable core body (2021), the ball valve (2022) is connected with the movable core body (2021) in a riveting mode, and the ball valve (2022) is used for sealing the liquid outlet (302).

5. The electromagnetic valve for hydraulic braking according to claim 4, wherein:

an orifice (303) is arranged on the valve seat (3), the orifice (303) is communicated with the liquid outlet (302), and the ball valve (2022) is driven to seal the orifice (303).

6. The electromagnetic valve for hydraulic braking according to claim 5, wherein:

the orifice of the orifice (303) is disposed to be gradually larger in a direction toward the ball valve (2022).

7. The electromagnetic valve for hydraulic braking according to claim 1, characterized in that:

the crimping protrusion (101) is arranged on the sleeve (1), the crimping groove is arranged on the static core (201), and the crimping protrusion (101) can be embedded into the crimping groove so as to limit the position of the static core (201) relative to the sleeve (1).

8. The electromagnetic valve for hydraulic braking according to claim 1, characterized in that:

the electromagnetic valve for hydraulic braking further comprises a pressing sleeve (4), the pressing sleeve (4) can be sleeved on the sleeve (1), and the pressing sleeve (4) is connected with an external member in a clamping mode to limit the position of the sleeve (1).

9. The electromagnetic valve for hydraulic braking according to claim 8, characterized in that:

the sleeve (1) is provided with a supporting part (102), one side of the supporting part (102) is abutted with the valve seat (3), and the pressing sleeve (4) is abutted with the other side of the supporting part (102).

10. The electromagnetic valve for hydraulic braking according to claim 1, characterized in that:

the electromagnetic valve for hydraulic braking further comprises an annular filter screen (5), and the annular filter screen (5) is arranged corresponding to the liquid inlet (301).