阅读说明：本技术 一种电磁执行器密封结构 (Sealing structure of electromagnetic actuator ) 是由 周强 张涛 张金伟 李中林 于 2019-11-21 设计创作，主要内容包括：本发明提供一种电磁执行器密封结构,包括阀套(1)和阀外壳(3),阀套(1)与阀外壳(3)之间形成套接式固定连接结构,阀套(1)上开设退刀槽(4),在阀套(1)与阀外壳(3)之间的套接部位设置密封胶(2),密封胶(2)中的部分密封胶以挤压方式填充到退刀槽(4)中,阀套(1)、密封胶(2)、阀外壳(3)之间共同形成密封结构。本发明不仅可提高阀套与阀外壳之间的连接强度,而且还能提高电磁执行器的气密可靠性,避免电磁执行器在耐久工作一段时间后由于阀套受到侧向力而造成阀套与阀外壳配合处产生变形缝隙,有效地防止电磁执行器发生漏气、漏油、积尘等问题,具有结构简单、实施成本低等突出优点。(The invention provides an electromagnetic actuator sealing structure which comprises a valve sleeve (1) and a valve shell (3), wherein a sleeved fixed connecting structure is formed between the valve sleeve (1) and the valve shell (3), a tool withdrawal groove (4) is formed in the valve sleeve (1), a sealing glue (2) is arranged at the sleeved part between the valve sleeve (1) and the valve shell (3), part of the sealing glue in the sealing glue (2) is filled into the tool withdrawal groove (4) in an extruding mode, and a sealing structure is formed among the valve sleeve (1), the sealing glue (2) and the valve shell (3) together. The invention not only can improve the connection strength between the valve sleeve and the valve shell, but also can improve the air tightness reliability of the electromagnetic actuator, avoid the deformation gap at the matching part of the valve sleeve and the valve shell caused by the lateral force applied to the valve sleeve after the electromagnetic actuator works for a period of time, effectively prevent the electromagnetic actuator from generating the problems of air leakage, oil leakage, dust accumulation and the like, and has the outstanding advantages of simple structure, low implementation cost and the like.)

1. The utility model provides an electromagnetic actuator seal structure, includes valve barrel (1) and valve housing (3), valve barrel (1) and valve housing (3) between form cup joint formula fixed connection structure, its characterized in that: the valve sleeve is characterized in that a tool withdrawal groove (4) is formed in the valve sleeve (1), a sealing glue (2) is arranged at a sleeving part between the valve sleeve (1) and the valve shell (3), part of the sealing glue in the sealing glue (2) is filled into the tool withdrawal groove (4) in an extruding mode, and a sealing structure is formed among the valve sleeve (1), the sealing glue (2) and the valve shell (3) together.

2. An electromagnetic actuator sealing structure according to claim 1, characterized in that: valve barrel (1) on form and store up gluey groove (6), store up gluey groove (6) in fill sealed glue (2), and store up and form seal structure between sealed glue (2) in gluey groove (6) and valve housing (3).

3. An electromagnetic actuator sealing structure according to claim 2, characterized in that: the glue storage groove (6) on the valve sleeve (1) is of a closed annular groove structure.

4. An electromagnetic actuator sealing structure according to claim 1, characterized in that: valve housing (3) on form and store up gluey groove (6), store up gluey groove (6) in fill sealed glue (2), and store up and form seal structure between sealed glue (2) in gluey groove (6) and valve barrel (1).

5. An electromagnetic actuator sealing structure according to claim 4, wherein: the glue storage groove (6) on the valve shell (3) is of a closed annular groove structure.

6. An electromagnetic actuator sealing structure according to any one of claims 2 to 5, characterized in that: the cross section of the glue storage groove (6) is of a rectangular structure.

7. An electromagnetic actuator sealing structure according to any one of claims 1 to 5, characterized in that: and a limiting step (5) is formed in the hollow cavity of the valve shell (3).

Technical Field

The invention relates to the field of sealing design of electromagnetic actuators, in particular to an electromagnetic actuator sealing structure applied to a variable valve lift system of a fuel engine.

Background

The variable valve lift system is widely applied to a novel automobile engine, and can improve the power and the torque of the engine, reduce the oil consumption and reduce the exhaust emission.

The electromagnetic actuator is an important component in a variable cam displacement type variable valve lift system, and is electrified according to a control signal sent by an engine control system, after the electrification, a valve core extends out, and drives a cam sleeve to axially move, so that the cam with different lift curves is switched to work. In order to avoid leakage of oil from the electromagnetic actuator and entry of impurities into the electromagnetic actuator, it is necessary to ensure airtightness of the electromagnetic actuator. At present, most of electromagnetic actuators adopt an interference press-fitting structure, and the structure can meet the requirement on air tightness when in a new state. However, after the electromagnetic actuator works for a period of time, a gap is easily formed at the matching position of the valve sleeve and the valve housing, and finally the problems of air leakage, oil leakage, dust accumulation and the like of the electromagnetic actuator are caused, so that the working reliability of the electromagnetic actuator is reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the problems in the prior art, the sealing structure of the electromagnetic actuator is provided, and the air tightness reliability of the electromagnetic actuator is improved.

The technical problem to be solved by the invention is realized by adopting the following technical scheme: the utility model provides an electromagnetic actuator seal structure, includes valve barrel and valve housing, valve barrel and valve housing between form cup joint formula fixed connection structure, the valve barrel on set up out the sword groove, cup joint the position at between valve barrel and the valve housing and set up sealed glue, just partially sealed glue in the sealed glue is filled in the sword groove with the extrusion mode, valve barrel, sealed glue, valve housing between form seal structure jointly.

Preferably, a glue storage groove is formed in the valve sleeve, the glue storage groove is filled with a sealing glue, and a sealing structure is formed between the sealing glue in the glue storage groove and the valve shell.

Preferably, the glue storage groove on the valve sleeve is of a closed annular groove structure.

Preferably, a glue storage groove is formed in the valve housing, the glue storage groove is filled with a sealing glue, and a sealing structure is formed between the sealing glue in the glue storage groove and the valve sleeve.

Preferably, the glue storage groove on the valve shell is of a closed annular groove structure.

Preferably, the cross-sectional shape of the glue storage tank is a rectangular structure.

Preferably, a retaining step is formed in the hollow cavity of the valve housing.

Compared with the prior art, the invention has the beneficial effects that: the valve sleeve is provided with the tool withdrawal groove, and sealant at the sleeving part between the valve sleeve and the valve shell is filled into the tool withdrawal groove in an extruding mode, so that a sealing structure is formed among the valve sleeve, the sealant and the valve shell, the connection strength between the valve sleeve and the valve shell can be ensured, the air tightness reliability of the electromagnetic actuator can be improved, deformation gaps at the matching part between the valve sleeve and the valve shell due to the fact that the valve sleeve is subjected to lateral force after the electromagnetic actuator works for a period of time, and the problems of air leakage, oil leakage, dust accumulation and the like of the electromagnetic actuator are effectively prevented.

Drawings

Fig. 1 is a structural sectional view of a sealing structure of an electromagnetic actuator according to the present invention (embodiment 1).

Fig. 2 is a schematic structural view of the valve sleeve of fig. 1.

Fig. 3 is a schematic structural view of the valve housing of fig. 1.

Fig. 4 is a structural sectional view of a sealing structure of an electromagnetic actuator according to the present invention (embodiment 2).

Fig. 5 is a schematic view of the valve sleeve of fig. 4.

Fig. 6 is a schematic structural view of the valve housing of fig. 4.

Part label name in the figure: 1-valve sleeve, 2-sealant, 3-valve shell, 4-tool withdrawal groove, 5-limit step and 6-glue storage groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.