CN210800103U

CN210800103U - Normally open solenoid valve and have braking system, arresting gear and vehicle of this solenoid valve

Info

Publication number: CN210800103U
Application number: CN201920618606.XU
Authority: CN
Inventors: 杨柳; 温开元; 崔延军
Original assignee: SORL Auto Parts Inc
Current assignee: Wenzhou Ruili Kemi Automotive Electronics Co., Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-06-19
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a normally open solenoid valve and have braking system, arresting gear and vehicle of this solenoid valve, including shell (1), spring (3), movable iron core (2) and valve seat (5), this normally open solenoid valve can press fit in the cavity of hydraulic pressure regulator body (7), is equipped with the head cover (4) at the top cover of valve seat (5); the spring (3) is sleeved on the end enclosure (4), and the movable iron core (2) is slidably arranged at the top of the inner cavity of the shell (1); one end of the spring (3) is movably contacted with the bottom plane of the movable iron core (2), and the other end is arranged in a circular stepped groove (18) arranged on the valve seat (5); a spherical surface (16) which protrudes outwards is arranged at the axis position of the bottom plane of the movable iron core (2); a concave arc surface (15) which is matched with the spherical surface (16) for sealing is arranged at the top axis position of the end enclosure (4). The normally open electromagnetic valve has the advantages of good sealing effect, compact structure and low manufacturing cost.

Description

Normally open solenoid valve and have braking system, arresting gear and vehicle of this solenoid valve

Technical Field

The utility model relates to a solenoid valve technical field especially relates to normally open solenoid valve among the miniature commercial car anti-lock braking system, specifically is a braking system, arresting gear and vehicle that relate to a normally open solenoid valve and have this solenoid valve.

Background

In an electronic stability control system, a traditional normally open electromagnetic valve mainly comprises a shell, a spring, a movable iron core, an annular sealing ring, a valve seat and a lip-shaped sealing ring. Because the electromagnetic valve is switched on and off for dozens of times per second and the on-off timeliness is ensured, a hard sealing surface structure is generally adopted. The traditional hard sealing structure of the normally open electromagnetic valve is formed by matching a plane arranged below a movable iron core and a boss arranged at the top of a valve seat. The boss has an axial bore. Due to the combined action of the flatness error of the lower end plane of the movable iron core, the flatness error of the surface of a small circular hole at the top of the injection molding valve seat and the error of the riveting coaxiality of the shell and the valve seat, the hard sealing surface of the movable valve core and the valve seat is easy to meet the sealing requirement. And normally open solenoid valve bottom does not generally have the filter screen, has tiny granule to get into the case and will lead to the movable valve core card to die, makes the solenoid valve lose effect.

SUMMERY OF THE UTILITY MODEL

For overcoming the defects and deficiencies in the prior art, the utility model provides a normally open solenoid valve with better sealing effect, compact structure, simple manufacture and low cost.

In order to achieve the purpose, the utility model adopts the technical scheme that the normally open electromagnetic valve comprises a shell, a spring, a movable iron core and a valve seat, the normally open electromagnetic valve can be pressed in a cavity of a hydraulic regulator body, and a sealing head sleeve is sleeved at the top of the valve seat; the spring is sleeved on the end socket sleeve, and the movable iron core is slidably arranged at the top of the inner cavity of the shell; one end of the spring is movably contacted with the bottom plane of the movable iron core, and the other end of the spring is arranged in a circular stepped groove formed in the valve seat; the axis position of the bottom plane of the movable iron core is provided with a spherical surface which protrudes outwards; the top axis position of the end enclosure is provided with a concave arc surface which is matched with the spherical surface for sealing, and the bottom of the concave arc surface is provided with a through hole.

Preferably, an inner passage is opened at an axial center position of the valve seat.

In any of the above aspects, it is preferable that the internal passage and the through hole communicate with each other.

In any of the above aspects, preferably, the internal passage is communicated with a liquid inlet passage provided in the body.

In any of the above schemes, preferably, the body is further provided with a liquid outlet channel.

In any of the above schemes, preferably, a filter screen is fixedly arranged at the liquid inlet of the internal channel.

In any of the above solutions, preferably, a relief groove is provided on the inner wall of the top circumference of the sealing sleeve.

In any of the above solutions, preferably, a first flange, a second flange and a third flange protruding radially are provided at intervals on the circumferential outer wall of the valve seat.

In any of the above solutions, preferably, a sealing ring is fixedly sleeved on the lower portion of the valve seat.

In any of the above aspects, preferably, the seal ring is in contact with the first flange.

In any of the above aspects, preferably, the seal ring is a one-way lip seal ring.

In any of the above schemes, preferably, an annular filter screen is arranged in the annular stepped groove.

In any of the above aspects, preferably, the end enclosure is made of a metal material.

In any of the above solutions, preferably, the valve seat is made of engineering plastics.

A second object of the present invention is to provide a brake system, which comprises the normally open solenoid valve of the present invention.

A third object of the present invention is to provide a brake device, which has the brake system of the present invention.

A fourth object of the present invention is to provide a vehicle, the vehicle having the brake device of the present invention.

Compared with the prior art, the utility model has the advantages of: in the sealing structure of the normally open electromagnetic valve, the dynamic valve core adopts a sealing structure of a spherical surface and an arc surface on the sealing sleeve. On one hand, the influence caused by the verticality of the part and the form and position tolerance of the planeness is overcome, so that the sealing surface is well matched, and the precision requirement on processing equipment is lowered. On the other hand, the valve seat is made of engineering plastics, and the valve seat, the annular filter screen and the end face filter screen are molded into an integral part, so that the structure is compact, the number of parts is reduced, and the product efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of a normally open solenoid valve according to the present invention.

Fig. 2 is a schematic structural diagram of a valve seat with a filter screen in the example shown in fig. 1 of the normally open solenoid valve according to the present invention.

Fig. 3 is a schematic view of the structure of the end cap of the normally open solenoid valve shown in fig. 1 according to the present invention.

Detailed Description

The preferred embodiments of the present invention will be further explained with reference to the accompanying drawings; in the description of the present invention, it is to be understood that the terms "axial", "radial", "axial", "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second", etc. 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, whereby a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Example 1:

as shown in fig. 1-3, a normally open solenoid valve for an anti-lock brake system includes a housing 1, a spring 3, a movable iron core 2, and a valve seat 5, and the normally open solenoid valve can be press-fitted into a cavity of a hydraulic modulator body 7. At least one liquid inlet channel 19 and at least one liquid outlet channel 10 are arranged on the hydraulic regulator body 7. The liquid inlet channel 19 and the liquid outlet channel 10 are communicated with the cavity of the hydraulic regulator body 7. The body 7 is made of a metal material.

The top of the valve seat 5 is sleeved with a head sealing sleeve 4. A tool withdrawal groove is arranged on the circumferential inner wall at the top of the end enclosure sleeve 4. The head cover 4 is connected with the top of the valve seat 5 in a riveting mode. In the present embodiment, the sealing sleeve 4 is made of a metal material, specifically, brass.

The movable iron core 2 is slidably arranged at the top of the inner cavity of the shell 1; one end of the spring 3 is movably contacted with the bottom plane of the movable iron core 2, and the other end of the spring is arranged in a circular stepped groove 18 formed in the valve seat 5; the top of the movable iron core 2 is contacted with the top of the inner cavity. The spring 3 is simultaneously in movable contact with the top circumferential outer walls of the end socket sleeve 4 and the valve seat 5. A spherical surface 16 which protrudes outwards is arranged at the axis position of the bottom plane of the movable iron core 2; a concave arc surface 15 which is matched with the spherical surface 16 for sealing is arranged at the top axis position of the end socket sleeve 4, and a through hole 14 is arranged at the bottom of the concave arc surface 15. The through hole 14 is communicated with an inner passage 12 formed in the axial position of the valve seat 5. The internal passage 12 is interconnected with the inlet passage 19.

Example 2:

The top of the valve seat 5 is sleeved with a head sealing sleeve 4. A tool withdrawal groove is arranged on the circumferential inner wall at the top of the end enclosure sleeve 4. The head cover 4 is connected with the top of the valve seat 5 in a riveting mode. Alternatively, the sealing sleeve 4 and the top of the valve seat 5 can be connected in a threaded manner. In the present embodiment, the valve seat 5 is made of engineering plastic, and may be polyphenylene sulfide, polycarbonate, or the like. In this embodiment, the sealing sleeve 4 is made of a metal material. In particular brass.

The movable iron core 2 is slidably mounted at the top of the inner cavity of the shell 1. One end of the spring 3 is movably contacted with the bottom plane of the movable iron core 2, and the other end is arranged in a circular stepped groove 18 arranged on the valve seat 5; in other words, the spring 3 supports the plunger 2 at the top of the cavity. The top of the movable iron core 2 is contacted with the top of the inner cavity. The inner cavity is a cylindrical structure inner cavity. The movable iron core 2 is of a cylindrical structure. The diameter of the movable iron core 2 is slightly smaller than that of the inner cavity. The spring 3 is simultaneously in movable contact with the circumferential outer wall of the head cover 4 and the top circumferential outer wall of the valve seat 5. A spherical surface 16 which protrudes outwards is arranged at the axis position of the bottom plane of the movable iron core 2; and a concave arc surface 15 which is matched with the spherical surface 16 for sealing is arranged at the top axis position of the end socket sleeve 4. The bottom of the concave arc surface 15 is provided with a through hole 14. The through hole 14 is communicated with an inner passage 12 formed in the axial position of the valve seat 5. The internal passage 12 is interconnected with a liquid inlet passage 19 provided in the body 7. The spherical surface 16 on the movable iron core 2 can be movably contacted with the concave arc surface 15.

An axially disposed internal passage 12 is provided at the axial center of the valve seat 5. The inner channel 12 is communicated with a through hole 14 on the sealing head sleeve 4. A filter screen 8 is fixedly arranged at the liquid inlet of the internal channel 12. The filter screen 8 is fixedly arranged at the bottom outlet of the internal channel 12 by adopting an injection molding mode. The through hole 14, the internal passage 12 and the liquid inlet passage 19 provided in the body 7 are communicated with each other.

A first flange 9, a second flange 11 and a third flange 13 which protrude radially are arranged at intervals on the circumferential outer wall of the valve seat 5. A first buffer groove is arranged between the first flange 9 and the second flange 11, and a second buffer groove is arranged between the second flange 11 and the third flange 13. A seal ring 6 contacting the first flange 9 is fixedly fitted to the lower portion of the valve seat 5. In the present embodiment, the seal ring 6 is a one-way lip seal ring. An annular filter screen 17 is also arranged in the annular stepped groove 18. The coil of the normally open solenoid valve is mounted on the circumferential outer wall of the housing 1. When the coil is electrified, under the action of electromagnetic force, the movable iron core 2 overcomes the elastic force of the spring 3 to move downwards, so that the spherical surface 16 below the movable iron core 2 is in close contact with the concave arc surface 15 of the end socket sleeve 4 to form a sealing structure. At this time, the brake fluid is blocked in the internal passage 12. When the coil is powered off, the movable iron core 2 is reset under the action of the elastic force of the spring 3. At this time, the brake fluid passes through the liquid inlet channel 19, the filter screen 8, the internal channel 12, the annular filter screen 17 and the liquid outlet channel 10 in sequence and finally enters the brake wheel cylinder.

Example 3:

as shown in fig. 1 to 3, an anti-lock brake system employing a normally open solenoid valve used in the anti-lock brake system as described in embodiment 2.

Example 4:

as shown in fig. 1 to 3, a brake apparatus employing the anti-lock brake system of embodiment 3.

Example 5:

as shown in fig. 1 to 3, a vehicle that employs a brake device as in embodiment 4.

After reading this specification, it will be apparent to those skilled in the art that the present invention is formed by a combination of prior art, and some of these prior art forming each part of the present invention are described in detail herein, and some are not described in detail for the sake of brevity of the specification, but will be known to those skilled in the art after reading this specification. Moreover, it will be appreciated by those skilled in the art that the combination of these prior art techniques to form the present invention is highly creative and is a crystal that has been analyzed theoretically and experimented with many years by the inventor. It will also be apparent to those skilled in the art from this disclosure that each of the embodiments disclosed herein, and any combination of features, can be incorporated into the present invention.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the invention and not for limiting the technical solutions, and those skilled in the art should understand that the technical solutions of the invention can be modified or substituted with equivalents without departing from the spirit and scope of the technical solutions, and all should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a normally open solenoid valve, includes shell (1), spring (3), moves iron core (2) and disk seat (5), but this normally open solenoid valve pressure equipment is in the cavity of hydraulic pressure regulator body (7), its characterized in that: a sealing head sleeve (4) is sleeved on the top of the valve seat (5); the spring (3) is sleeved on the end enclosure (4), and the movable iron core (2) is slidably arranged at the top of the inner cavity of the shell (1); one end of the spring (3) is movably contacted with the bottom plane of the movable iron core (2), and the other end of the spring is arranged in a circular stepped groove (18) formed in the valve seat (5); a spherical surface (16) which protrudes outwards is arranged at the axis position of the bottom plane of the movable iron core (2); a concave arc surface (15) which is matched with the spherical surface (16) for sealing is arranged at the top axis position of the end enclosure (4), and a through hole (14) is arranged at the bottom of the concave arc surface (15).

2. A normally open solenoid valve as claimed in claim 1 wherein: an inner channel (12) is arranged at the axis position of the valve seat (5).

3. A normally open solenoid valve as claimed in claim 2 wherein: the inner channel (12) and the through hole (14) are communicated with each other.

4. A normally open solenoid valve as claimed in claim 2 wherein: the internal channel (12) is communicated with a liquid inlet channel (19) arranged on the body (7).

5. A normally open solenoid valve as claimed in claim 4 wherein: the body (7) is also provided with a liquid outlet channel (10).

6. A normally open solenoid valve as claimed in claim 4 wherein: a filter screen (8) is fixedly arranged at the liquid inlet of the internal channel (12).

7. A normally open solenoid valve as claimed in claim 1 wherein: a tool withdrawal groove is arranged on the circumferential inner wall at the top of the end enclosure (4).

8. A normally open solenoid valve as claimed in claim 1 wherein: a first flange (9), a second flange (11) and a third flange (13) which protrude in the radial direction are arranged on the circumferential outer wall of the valve seat (5) at intervals.

9. A normally open solenoid valve as claimed in claim 8 wherein: and a sealing ring (6) is fixedly sleeved at the lower part of the valve seat (5).

10. A normally open solenoid valve as claimed in claim 9 wherein: the sealing ring (6) is in contact with the first flange (9).

11. A normally open solenoid valve as claimed in claim 10 wherein: the sealing ring (6) is a one-way lip-shaped sealing ring.

12. A normally open solenoid valve as claimed in claim 1 wherein: an annular filter screen (17) is arranged in the annular stepped groove (18).

13. A normally open solenoid valve as claimed in claim 1 wherein: the end enclosure (4) is made of metal materials.

14. A normally open solenoid valve as claimed in claim 1 wherein: the valve seat (5) is made of engineering plastics.

15. Braking system, including normally open solenoid valve, its characterized in that: the brake system employs a normally open solenoid valve as claimed in any one of claims 1 to 14.

16. Braking device, this braking device has braking system, its characterized in that: the braking device employs the braking system as claimed in claim 15.

17. Vehicle, has arresting gear, its characterized in that: the vehicle employs the brake device as claimed in claim 16.