CN215721142U

CN215721142U - Electromagnetic valve for automobile air suspension distributing valve

Info

Publication number: CN215721142U
Application number: CN202121850029.0U
Authority: CN
Inventors: 刘建
Original assignee: Yuhuan Maixunli Electronic Machinery Co ltd
Current assignee: Yuhuan Maixunli Electronic Machinery Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-02-01
Anticipated expiration: 2031-08-10

Abstract

The utility model provides an electromagnetic valve for an automobile air suspension distribution valve, and belongs to the technical field of automobile parts. The electromagnetic valve solves the problems of low yield and the like of the existing electromagnetic valve for the automobile air suspension distribution valve. The electromagnetic valve for the automobile air suspension distribution valve comprises a movable iron core, a static iron core, a spring I, an air inlet nozzle and a cylindrical shell, wherein a piston positioned between the air inlet nozzle and the movable iron core is arranged in the shell, a spring II is arranged between the piston and the movable iron core, a pilot air hole communicated with the inner end of the air inlet nozzle and the bottom of the piston is arranged in the piston, an air passing channel communicated with the bottom of the piston and an air outlet is further arranged in the piston, and the spring I provides elastic force to enable a sealing gasket to always have the tendency of being blocked in the air passing channel. The utility model has the advantages of quick and reliable inflation, high yield and the like.

Description

Electromagnetic valve for automobile air suspension distributing valve

Technical Field

The utility model belongs to the technical field of automobile accessories, relates to an accessory of an automobile air suspension distribution valve, and particularly relates to an electromagnetic valve for the automobile air suspension distribution valve.

Background

With the improvement of the living standard of people, automobiles are popularized to thousands of households, and some medium-high-grade cars are generally equipped with more comfortable air suspension chassis in a standard mode, so that the air suspension distribution valve is used as an important accessory in the air suspension chassis, and the demand of the air suspension distribution valve is gradually increased. In the production process of the gas suspension distribution valve, the main body component is a solenoid valve for controlling the inlet and outlet of high-pressure gas.

When the vehicle runs, the heights of the four wheels relative to the ground are changed due to the unevenness of the road surface, and an automobile ECU (electronic control unit) compares the data of the height sensor with a set value to control the electromagnetic valves in the distributing valves to inflate the air bags of the four wheel shock absorbers or control the electromagnetic valves on the shock absorbers to deflate, so that the requirement of air suspension for smooth driving is met. In the process, the electromagnetic valve in the distribution valve has two working states: 1. the ECU is powered to inflate the air bag of the shock absorber; 2. and the ECU is powered off to maintain the air pressure in the air bag of the shock absorber. Therefore, the requirements of the electromagnetic valve are that the action is fast when the power supply and the inflation are carried out, and the sealing is good when the power failure and the pressure maintaining are carried out.

At present, the voltage range of a storage battery of an automobile is 10-14.5V, so that when the lowest working voltage of five electromagnetic valves in a distribution valve needs to be 8V, a coil can reliably work to inflate an air bag, and the air tightness can be reliably kept under the air pressure of 2 Mpa. At present, due to the limitation of the internal space structure of the air suspension distribution valve, the stroke of the electromagnetic valve for ensuring reliable work is only 0.5 mm, the stroke size of the 0.5 mm is ensured by assembling the movable iron core, the static iron core, the outer tube and the air inlet connector, and in the actual production and assembly process, the requirements on the dimensional accuracy and the dimensional stability of the four parts are very high, so that the yield is low, and the production efficiency is not high.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides the electromagnetic valve for the automobile air suspension distribution valve, which has high production efficiency, high yield and quick and reliable inflation.

The purpose of the utility model can be realized by the following technical scheme: a solenoid valve for an automobile air suspension distribution valve comprises a movable iron core, a static iron core, a first spring, an air inlet nozzle and a cylindrical shell, wherein the static iron core is fixedly connected to the lower portion of the shell, the movable iron core is positioned in the shell, a sealing gasket is fixedly connected to the top of the movable iron core, the lower end of the first spring is abutted to the static iron core, the upper end of the first spring is abutted to the movable iron core, the air inlet nozzle is inserted into the top of the shell, the shell is provided with an air outlet close to the outer wall of the top of the air inlet nozzle, and is characterized in that a piston positioned between the air inlet nozzle and the movable iron core is arranged in the shell, a second spring is arranged between the piston and the movable iron core and provides elastic force to enable the piston to always have the tendency of abutting against the inner end of the air inlet nozzle, a pilot air hole communicated with the inner end of the air inlet nozzle and the bottom of the piston is arranged in the piston, and an air passing channel communicated with the bottom of the piston and the air outlet is also arranged in the piston, the first spring provides elastic force so that the sealing gasket always has the tendency of being blocked in the air passing channel.

In the electromagnetic valve for the automobile air suspension distribution valve, the inner diameter of the pilot air hole is smaller than the inner diameter of the air passing channel.

In the electromagnetic valve for the automobile air suspension distribution valve, the bottom of the piston is provided with an annular protruding part protruding axially, the protruding part is communicated with the air passage, and the sealing gasket is used for sealing the protruding part.

In the electromagnetic valve for the automobile air suspension distribution valve, the piston is embedded with the sealing ring sealed on the inner wall of the shell.

In the electromagnetic valve for the automobile air suspension distribution valve, the top of the piston is embedded with an annular sealing ring which is used for abutting against the inner end of the air inlet nozzle.

In the above electromagnetic valve for the automobile air suspension distribution valve, the housing is internally and fixedly connected with a supporting seat positioned at the upper part of the movable iron core, the lower end of the second spring is abutted against the supporting seat, and the upper end of the second spring is abutted against the bottom of the piston.

In the above electromagnetic valve for the automobile air suspension distribution valve, the support seat includes a first support ring and a second support ring which are both annular, the inner diameter of the first support ring is larger than that of the second support ring, the first support ring is located on the upper portion of the second support ring, and the lower end of the second spring abuts against the second support ring.

In the electromagnetic valve for the automobile air suspension distribution valve, the static iron core is provided with a first limiting blind hole into which the lower end of the spring is inserted, and the movable iron core is provided with a second limiting blind hole into which the upper end of the spring is inserted.

In the electromagnetic valve for the automobile air suspension distribution valve, the shell is welded with the static iron core.

Compared with the prior art, the electromagnetic valve for the automobile air suspension distribution valve has the advantages of quick and reliable air inflation, wide application range, reduced requirement on the precision of the machining size of a single part, high one-time assembly yield and high production efficiency.

Drawings

Fig. 1 is a sectional view showing the structure of a solenoid valve for an air suspension distribution valve of an automobile.

In the figure, 1, a movable iron core; 2. a stationary iron core; 3. a first spring; 4. an air inlet nozzle; 5. a housing; 6. a gasket; 7. an air outlet; 8. a piston; 9. a second spring; 10. a pilot air hole; 11. a gas passage; 12. a projection; 13. a seal ring; 14. a seal ring; 15. a first support ring; 16. a second support ring; 17. a first limiting blind hole; 18. and a second limiting blind hole.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, the electromagnetic valve for the automobile air suspension distribution valve comprises a movable iron core 1, a stationary iron core 2, a spring one 3, an air inlet nozzle 4 and a cylindrical shell 5, wherein the stationary iron core 2 is fixedly connected to the lower part of the shell 5, the movable iron core 1 is positioned in the shell 5, the top of the movable iron core 1 is fixedly connected with a sealing gasket 6, the lower end of the spring one 3 is abutted against the stationary iron core 2, the upper end of the spring one 3 is abutted against the movable iron core 1, the air inlet nozzle 4 is inserted into the top of the shell 5, the outer wall of the top of the shell 5, which is close to the air inlet nozzle 4, is provided with air outlets 7, in the embodiment, the number of the air outlets 7 is two, the air outlets 7 are symmetrically arranged, a piston 8 positioned between the air inlet nozzle 4 and the movable iron core 1 is arranged in the shell 5, a spring two 9 is arranged between the piston 8 and the movable iron core 1, the spring two 9 provides elastic force to enable the piston 8 to always have a tendency of abutting against the inner end of the air inlet nozzle 4, a pilot air hole 10 communicating the inner end of the piston 8 with the bottom of the piston 8 is arranged in the piston 8, the piston 8 is also internally provided with an air passing channel 11 which is communicated with the bottom of the piston 8 and the air outlet 7, and the spring I3 provides elastic force to ensure that the sealing gasket 6 always has the tendency of being blocked in the air passing channel 11.

The electromagnetic valve for the automobile air suspension distribution valve has the following working process: when the coil is not electrified, the movable iron core 1 enables the sealing gasket 6 to be sealed in the air passage 11 under the action of the elastic force of the first spring 3, the gas entering the pilot air hole 10 from the air inlet nozzle 4 is sealed by the sealing gasket 6, and the air inlet pressure acting on the piston 8 is balanced, so that the piston 8 does not act, the air inlet nozzle 4 is not communicated with the air outlet 7, and the air inlet nozzle is in a closed state; when the coil is electrified, the electromagnetic force overcomes the elastic force of the first spring 3 to enable the movable iron core 1 to move, the sealing gasket 6 is separated from the air passing channel 11, the pilot air hole 10 is communicated with the air passing channel 11, and the air pressure of the air outlet 7 is lower than that of the air inlet nozzle 4, so that the piston 8 overcomes the elastic force of the second spring 9 under the action of the air pressure and moves towards the side of the movable iron core 1, the air inlet nozzle 4 is communicated with the air outlet 7, and inflation is achieved; when the coil is powered off, the movable iron core 1 is displaced under the action of the elastic force of the first spring 3, so that the sealing gasket 6 is blocked in the air passage 11, the piston 8 is displaced towards the air inlet nozzle 4 under the action of the second spring 9 under the condition of no air pressure difference, the piston 8 abuts against the inner end of the air inlet nozzle 4, and the inner end of the air inlet nozzle 4 is separated from the air outlet 7 and is in a closed state.

The electromagnetic valve for the automobile air suspension distribution valve realizes inflation work through air pressure difference, inflation is rapid and reliable, electromagnetic force only controls opening and closing of the pilot air hole 10 and the air passage 11, and therefore only small electromagnetic force is needed, the electromagnetic force needed by the electromagnetic valve for the automobile air suspension distribution valve is at least two times lower than that needed originally, for example, 8V working voltage is needed originally, the electromagnetic valve can work only with less than 4V, voltage adaptation range is widened, and the electromagnetic valve can be well applicable to a system with air pressure higher than 2 Mpa.

In more detail, the inner diameter of the pilot air hole 10 is smaller than the inner diameter of the air passing channel 11, so that air pressure difference is easily formed, the working stability is good, the bottom of the piston 8 is provided with an axially-protruding annular protruding part 12, the protruding part 12 is communicated with the air passing channel 11, the sealing gasket 6 is used for sealing the protruding part 12, the protruding part 12 enables the sealing performance to be good, and the working stability is improved; the piston 8 is embedded with a sealing ring 13 sealed on the inner wall of the shell 5, the sealing ring 13 ensures the sealing property between the piston 8 and the inner wall of the shell 5, and the working stability is good; the top of piston 8 is inlayed and is equipped with and be annular and be used for conflicting air inlet nozzle 4 inner sealing ring 14, and sealing ring 14 plays buffering cushioning effect, and when sealing ring 14 conflicted in air inlet nozzle 4 inner moreover, including sealing ring 14 is with the inner cladding of air inlet nozzle 4, the leakproofness is good.

A supporting seat positioned at the upper part of the movable iron core 1 is fixedly connected in the shell 5, the lower end of the second spring 9 abuts against the supporting seat, and the upper end of the second spring 9 abuts against the bottom of the piston 8, so that the second spring 9 is convenient to arrange, and the second spring 9 has good working stability; the supporting seat comprises a first supporting ring 15 and a second supporting ring 16 which are annular, the inner diameter of the first supporting ring 15 is larger than the inner diameter of the second supporting ring 16, the first supporting ring 15 is located on the upper portion of the second supporting ring 16, the lower end of the second spring 9 abuts against the second supporting ring 16, the first supporting ring 15 and the second supporting ring 16 form the supporting seat, the structure is simple, installation is convenient, the inner wall of the first supporting ring 15 plays a limiting role in the second spring 9, and the second spring 9 is stable in work.

The static iron core 2 is provided with a first limiting blind hole 17 for inserting the lower end of the first spring 3, and the movable iron core 1 is provided with a second limiting blind hole 18 for inserting the upper end of the first spring 3, so that the first spring 3 cannot deflect and twist, and the first spring 3 has good working stability; the shell 5 is welded with the static iron core 2, so that the connection is stable and the service life is long.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. The utility model provides a solenoid valve for automobile air suspension distributing valve, is including moving iron core (1), quiet iron core (2), spring (3), suction nozzle (4) and casing (5) that are the tube-shape, quiet iron core (2) link firmly in casing (5) lower part, the top that moves iron core (1) and be located casing (5) and move iron core (1) link firmly sealed pad (6), the lower extreme of spring (3) contradict in quiet iron core (2), the upper end of spring (3) contradicts in moving iron core (1), suction nozzle (4) peg graft in casing (5) top, casing (5) top outer wall that is close to suction nozzle (4) have gas outlet (7), a serial communication port, casing (5) in be equipped with and be located suction nozzle (4) and move piston (8) between iron core (1), piston (8) and move iron core (1) between be equipped with spring two (9) and spring two (9) provide elasticity and make piston (8) Have all the time and contradict in the inner trend of suction nozzle (4), piston (8) in be equipped with the guide gas pocket (10) of intercommunication suction nozzle (4) inner and piston (8) bottom, still be equipped with air passage (11) of crossing of intercommunication piston (8) bottom and gas outlet (7) in piston (8), spring (3) provide elasticity and make sealed pad (6) have the trend of shutoff in air passage (11) all the time.

2. The electromagnetic valve for the air suspension distribution valve of the automobile as claimed in claim 1, wherein the inner diameter of the pilot air hole (10) is smaller than the inner diameter of the air passing channel (11).

3. The electromagnetic valve for the air suspension distribution valve of the automobile as claimed in claim 2, wherein the bottom of the piston (8) is provided with an axially protruding and annular protruding part (12), the protruding part (12) is communicated with the air passage (11), and the sealing gasket (6) is used for sealing the protruding part (12).

4. The solenoid valve for the pneumatic suspension distributing valve of the automobile according to claim 1, 2 or 3, characterized in that the piston (8) is embedded with a sealing ring (13) sealed against the inner wall of the housing (5).

5. The solenoid valve for the pneumatic suspension dispensing valve of a motor vehicle according to claim 4, characterized in that the top of the piston (8) is embedded with a ring-shaped sealing ring (14) for abutting against the inner end of the inlet nozzle (4).

6. The electromagnetic valve for the pneumatic suspension distribution valve of the automobile as claimed in claim 5, wherein the housing (5) is fixedly connected with a supporting seat at the upper part of the plunger (1), the lower end of the second spring (9) abuts against the supporting seat, and the upper end of the second spring (9) abuts against the bottom of the piston (8).

7. The solenoid valve for the air suspension distributing valve of the automobile as claimed in claim 6, wherein the supporting seat comprises a first supporting ring (15) and a second supporting ring (16) which are both annular, the inner diameter of the first supporting ring (15) is larger than that of the second supporting ring (16), the first supporting ring (15) is located at the upper part of the second supporting ring (16), and the lower end of the second spring (9) abuts against the second supporting ring (16).

8. The electromagnetic valve for the automobile air suspension distribution valve is characterized in that the static iron core (2) is provided with a first limiting blind hole (17) for inserting the lower end of the first spring (3), and the movable iron core (1) is provided with a second limiting blind hole (18) for inserting the upper end of the first spring (3).

9. The electromagnetic valve for the automobile air suspension distribution valve is characterized in that the shell (5) is welded with the static iron core (2).