CN211599553U

CN211599553U - Normally open solenoid valve for automobile braking

Info

Publication number: CN211599553U
Application number: CN201922350300.3U
Authority: CN
Inventors: 邵姜华; 潘劲; 薛飞; 江河
Original assignee: Jiangsu Yilong Electromechanical Technology Co ltd
Current assignee: Jiangsu Yilong Electromechanical Technology Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-29
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a normally open solenoid valve for automobile braking, including the kinetoplast, separate the magnetron, the valve body, the valve rod assembly, reset spring and disk seat, the valve rod assembly includes push rod and steel ball, the steel ball is installed at the push rod tip, the push rod overcoat has reset spring, the kinetoplast is installed in separating the magnetron, the valve body welded fastening of separating magnetron and kinetoplast below, the upper portion and the interior wall connection of separating the magnetron of valve body, it has the centre bore to run through in the valve body, install the valve rod assembly in the centre bore of the upper portion of valve body, the disk seat is installed in the centre bore of lower part of valve body, reset spring installs between disk seat and push rod, the orifice position at disk seat top is formed with the conical surface, the orifice. When the coil is electrified or powered off, the steel ball on the push rod is enabled to contact or leave the throttling hole, the electromagnetic valve is in a closed or normally open state, the steel ball is matched with the valve seat, leakage is reduced, and the sealing effect is good.

Description

Normally open solenoid valve for automobile braking

Technical Field

The utility model relates to a normally open solenoid valve, concretely relates to normally open solenoid valve is used in car braking.

Background

In the existing scheme, the key sealing surface on the valve seat is determined by a thin-wall metal deep-drawing forming process, the requirement on the precision of a die is high, the cost of the die is high, the qualification rate of the existing product is low, and the production cost of parts is high. In order to ensure that the electromagnetic valve is sealed at the key position of the valve port, the head of the push rod is provided with a steel ball, but the spherical surface and the position of the valve port cannot be better attached, so that the sealing effect is general. In order to prevent the working medium from leaking and ensure that the sliding of the moving body is more reliable, a new technical scheme needs to be provided.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a sealed effectual, working medium does not leak automobile braking is with normally open solenoid valve.

The utility model provides a following technical scheme:

the utility model provides a normally open solenoid valve for automobile braking which characterized in that: the valve rod assembly comprises a push rod and a steel ball, the steel ball is mounted at the end of the push rod, the reset spring is sleeved outside the push rod, the magnetic isolation tube is sleeved outside the moving body, the magnetic isolation tube is welded and fixed with the valve body below the moving body, the upper portion of the valve body is connected with the inner wall of the magnetic isolation tube, a central hole penetrates through the valve body, the valve rod assembly is mounted in the central hole of the upper portion of the valve body, the valve seat is mounted in the central hole of the lower portion of the valve body, the reset spring is mounted between the valve seat and the push rod, a conical surface is formed at the orifice position at the top of the valve seat, the steel ball at the end of the push rod is aligned to the conical surface of the valve seat, and the push rod forms sealing through the steel ball.

Further, the valve seat is in interference fit with a central hole in the lower portion of the valve body.

Furthermore, a ring filter screen is arranged on the lower portion of the valve body close to the valve seat mounting position and along the outer circumference of the valve body.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a normally open solenoid valve, kinetoplast are installed in the magnetism-isolating pipe, kinetoplast because of reset spring's effect, the steel ball of kinetoplast tip and the orifice position of lower disk seat have the clearance in the magnetism-isolating pipe, and the solenoid valve is in normally open state; when the coil is electrified or powered off, the steel ball on the push rod is enabled to contact or leave the throttling hole, the electromagnetic valve is in a closed or normally open state, the steel ball is matched with the valve seat, leakage is reduced, and the sealing effect is good.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic sectional view of the valve seat of the present invention.

Fig. 3 is a perspective view of the valve seat of the present invention.

In the figure: 1. a valve stem assembly; 2. a magnetism isolating pipe; 3. a return spring; 4. a moving body; 5. a valve seat; 6. a valve body; 7. a steel ball; 8. a conical surface; 9. push rod, 10, orifice, 11, center hole, 12, end screen, 13, ring screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the utility model discloses a normally open solenoid valve for automobile braking, including mobile body 4, magnetism-isolating pipe 2, valve body 6, valve rod assembly 1, reset spring 3 and valve seat 5, valve rod assembly 1 includes push rod 9 and steel ball 7, steel ball 7 is installed at push rod 9 tip, push rod 9 overcoat has reset spring 3, mobile body 4 overcoat has magnetism-isolating pipe 2, mobile body 4 is installed in magnetism-isolating pipe 2, magnetism-isolating pipe 2 and the valve body 6 welded fastening of mobile body 4 below, the upper portion of valve body 6 is connected with magnetism-isolating pipe 2 inner wall, it has centre bore 11 to run through in the valve body 6, install valve rod assembly 1 in the centre bore 11 of the upper portion of valve body 6, valve seat 5 is installed in the centre bore 11 of the lower portion of valve body, reset spring 3 is installed between valve seat 5 and push rod 9, in order to make the solenoid valve hole key position sealing effect better, the orifice 10 position at valve seat 5 top, the steel ball 7 at the end of the push rod 9 is aligned with the conical surface 8 of the valve seat 5, and the push rod 9 forms a seal through the positions of the steel ball 7 and the throttling hole 10 of the lower valve seat 5.

For a secure mounting of the valve body 6, the valve seat 5 is interference fitted with the central hole 11 of the lower part of the valve body 6.

In order to control the quality of oil and prevent impurities from influencing the performance of the electromagnetic valve, the lower part of the valve body 6 close to the installation position of the valve seat 5 is provided with an annular filter screen 13 along the outer circumference of the valve body 6. Can filter impurities in the oil.

The lower end of the valve seat 5 is provided with an end screen 12. Can filter impurities in the oil.

The moving body 4 slides in the magnetism isolating pipe 2, the magnetism isolating pipe 2 provides a guiding movement space for the moving body 4 to form a heart assembly for the work of the electromagnetic valve, and the magnetism isolating pipe 2 is used for isolating the working medium from the coil component so that the working medium is not leaked.

In an initial state, due to the action of the return spring 3, a gap exists between the steel ball 7 of the push rod 9 and the opening at the upper end of the throttle hole 10, the throttle hole is opened, and the electromagnetic valve is in a normally open state; when the coil is electrified, the moving body 4 is under the action of electromagnetic force to drive the push rod 9 to move towards the valve seat 5, so that the steel ball 7 on the push rod 9 contacts the opening position of the throttle hole 10 to close the throttle hole 10, and the electromagnetic valve is in a closed state; when the coil is powered off, the push rod 9 is far away from the valve seat 5 under the action of the return spring 3, the throttling hole 10 is opened, and the electromagnetic valve is restored to a normally open state.

The push rod 9 embedded with the steel ball 7 is matched with the machining valve seat 5, so that the product leakage qualification rate is improved, and the product cost is reduced.

In the normally open solenoid valve of the utility model, the movable body 4 is arranged in the magnetism isolating pipe 2, the steel ball 7 at the end part of the movable body 4 and the orifice 10 of the lower valve seat 5 have a gap due to the action of the reset spring 3 in the magnetism isolating pipe 2 of the movable body 4, and the solenoid valve is in a normally open state; when the coil is electrified or powered off, the steel ball 7 on the push rod 9 is urged to contact or leave the throttling hole 10, so that the electromagnetic valve is in a closed or normally open state, the steel ball 7 is matched with the valve seat 5, leakage is reduced, and the sealing effect is good.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a normally open solenoid valve for automobile braking which characterized in that: the valve comprises a moving body (4), a magnetism isolating pipe (2), a valve body (6), a valve rod assembly (1), a return spring (3) and a valve seat (5), wherein the valve rod assembly (1) comprises a push rod (9) and a steel ball (7), the steel ball (7) is installed at the end part of the push rod (9), the return spring (3) is sleeved outside the push rod (9), the magnetism isolating pipe (2) is sleeved outside the moving body (4), the magnetism isolating pipe (2) and the valve body (6) below the moving body (4) are welded and fixed, the upper part of the valve body (6) is connected with the inner wall of the magnetism isolating pipe (2), a center hole (11) penetrates through the valve body (6), the valve rod assembly (1) is installed in the center hole (11) of the upper part of the valve body (6), the valve seat (5) is installed in the center hole (11) of the lower part of the valve body, and the return spring (3) is installed between the, a conical surface (8) is formed in the position of an orifice (10) in the top of the valve seat (5), a steel ball (7) at the end of the push rod (9) is aligned to the conical surface (8) of the valve seat (5), and the push rod (9) forms sealing through the positions of the steel ball (7) and the orifice (10) of the valve seat (5) below.

2. The normally open electromagnetic valve for the automobile brake as claimed in claim 1, characterized in that: the valve seat (5) is in interference fit with a central hole (11) of the lower part of the valve body (6).

3. The normally open electromagnetic valve for the automobile brake as claimed in claim 1, characterized in that: and a ring filter screen (13) is arranged at the lower part of the valve body (6) close to the installation position of the valve seat (5) along the outer circumference of the valve body (6).