阅读说明：本技术 一种防松脱阀芯及机油控制阀 (Anti-loosening valve core and engine oil control valve ) 是由 李彦飞 王晓成 王益民 张大卫 于 2020-12-02 设计创作，主要内容包括：本发明公开了一种防松脱阀芯及机油控制阀,该防松脱阀芯包括阀芯壳体、设置于所述阀芯壳体内部的阀芯支撑以及设置于所述阀芯壳体一端环槽内的阀芯盘片；其中,所述阀芯支撑与所述阀芯盘片中心连接。本申请提供的防松脱阀芯,将阀芯盘片支撑设计在阀芯支撑上,这样在阀芯盘片和阀芯支撑的中心轴线有偏移角度时,来自于阀芯支撑上的推出力,会直接作用在阀芯盘片中心区域,与现有技术中把支撑设计在阀芯盘片底部的结构相比,大大降低杠杆效应,从而降低阀芯壳体上接触点的应力水平,最终降低失效风险,且通过优化阀芯盘片与阀芯壳体的连接方式,采用焊接、铆接或卡槽式结构提高了连接强度,防止工作中阀芯盘片与阀芯壳体脱离造成阀芯组件解体。(The invention discloses an anti-loosening valve core and an engine oil control valve, wherein the anti-loosening valve core comprises a valve core shell, a valve core support and a valve core disc, wherein the valve core support is arranged in the valve core shell, and the valve core disc is arranged in a ring groove at one end of the valve core shell; wherein, the valve core support is connected with the center of the valve core disk. The application provides a locking case that takes off, support the design with case disc on the case supports, when the central axis that case disc and case supported has the skew angle like this, come from the push-out force that the case supported, can directly be used in case disc central zone, compare the structure of support design in case disc bottom among the prior art, greatly reduced lever effect, thereby reduce the stress level of contact point on the case casing, finally reduce the risk of failure, and through the connected mode of optimizing case disc and case casing, adopt the welding, riveting or draw-in groove formula structure has improved joint strength, prevent in service case disc and case casing and break away from and cause the case subassembly to disintegrate.)

1. An anti-loosening valve core is characterized by comprising a valve core shell, a valve core support and a valve core disc, wherein the valve core support is arranged in the valve core shell, and the valve core disc is arranged in a ring groove at one end of the valve core shell; wherein, the valve core support is connected with the center of the valve core disk.

2. The anti-release valve cartridge of claim 1, wherein the cartridge support is a cross-shaped structure with a guide outer circle disposed thereon.

3. The anti-release valve cartridge of claim 1, wherein the cartridge disc is welded to the cartridge housing.

4. The anti-release valve cartridge as recited in claim 1, wherein a position of the cartridge housing at which the cartridge disc is connected is provided with a position-limiting member, and the position-limiting member fixes the cartridge disc to the cartridge housing.

5. The anti-release valve cartridge of claim 4, wherein: the limiting component comprises a guide outer diameter and a guide inner diameter which are arranged on the valve core disc, the guide outer diameter and the inner wall of the valve core shell form riveting connection, and the riveting angle between the guide outer diameter and the valve core shell is at least 90 degrees; the guide inner diameter and the valve core support outer wall form riveting connection.

6. The anti-release valve cartridge as defined in claim 4, wherein said limiting member includes an installation groove disposed on said cartridge housing and a housing locking groove disposed around said installation groove;

the limiting part also comprises a bulge and a groove which are arranged on the valve core disc; the protrusion is connected with the shell clamping groove in a matched mode.

7. The anti-release valve cartridge of claim 1, wherein the material of the cartridge disc comprises one of low carbon steel, alloy steel, or stainless steel.

8. The anti-release valve cartridge of claim 1, wherein the material of the cartridge support comprises one of low carbon steel, alloy steel, or stainless steel.

9. The anti-release valve cartridge of claim 1, wherein the material of the cartridge housing comprises one of low carbon steel, alloy steel, or stainless steel.

10. An oil control valve comprising a bolt housing, and the anti-release valve element according to any one of claims 1 to 9, wherein the anti-release valve element is mounted in the bolt housing.

Technical Field

The invention relates to the technical field of engine oil control valves, in particular to an anti-loosening valve core and an engine oil control valve.

Background

On modern vehicular engines, VVT has become the standard configuration for engines. With the development of the VVT technology, the mid-set VVT plays more and more important roles in improving the dynamic performance of the automobile and saving energy and reducing emission by virtue of its fast response and reduced engine oil consumption. The performance of a central oil control valve used in a central VVT, which is one of the most critical components in the VVT, determines the performance of the entire VVT system.

And the responsiveness and reliability of the central oil control valve are the most important indexes for measuring the performance of the central oil control valve. The engine oil control valve is used as a device for controlling the switching of the oil circuit, the responsiveness and the reliability of the engine oil control valve are directly related to the function realization of an automobile power system, and the dynamics, the safety and the reliability of an automobile are determined.

In the existing engine oil control valve technology, in a valve core assembly, a valve core disc and a valve core shell are connected together through interference crimping or riveting, and a riveting structure and an interference crimping structure are shown in the figure. In the actual operation of the valve core, the oil pressure fluctuation peak value in the valve core is very high, the peak value of the force transmitted to the valve core disc on the top is also very high, the valve core disc is impacted by alternating pressure, and the valve core disc is likely to be loaded on the top due to the structure of the valve core assembly, so that the valve core disc and the valve core shell are finally loosened.

Disclosure of Invention

Based on this, it is necessary to provide a locking case and an oil control valve, which greatly improve the connection strength between the disc of the case and the case by optimizing the connection mode between the disc of the case and adopting a welding, riveting or clamping groove type structure.

In a first aspect, the application provides an anti-loosening valve core, which comprises a valve core shell, a valve core support arranged in the valve core shell and a valve core disk arranged in a ring groove at one end of the valve core shell; wherein, the valve core support is connected with the center of the valve core disk.

In the above scheme, the valve core disk support is designed on the valve core support; therefore, when the central axes of the valve core disc and the valve core support have an offset angle, the push-out force from the valve core support can directly act on the central area of the valve core disc, and compared with the structure that the support is designed at the bottom of the valve core disc in the prior art, the lever effect is greatly reduced, so that the stress level of a contact point on the valve core shell is reduced, and finally the failure risk is reduced.

In some embodiments, the valve core support is in a cross-shaped structure, and a guide outer circle is arranged on the valve core support.

In some embodiments, the poppet disk is welded to the poppet housing.

In the scheme, the valve core disc and the valve core shell are welded into a whole, so that the connection strength is greatly improved, and the problem of disassembly and failure of the valve core is solved.

In some embodiments, a position limiting component is arranged at the joint of the valve core shell and the valve core disk, and the valve core disk is fixed on the valve core shell by the position limiting component.

In some embodiments, the limiting component comprises a guide outer diameter and a guide inner diameter which are arranged on the valve core disc, the guide outer diameter and the inner wall of the valve core shell form a riveting connection, and the riveting angle between the guide outer diameter and the valve core shell is at least 90 degrees; the guide inner diameter and the valve core support outer wall form riveting connection.

In the above scheme, during the optimized riveting connection mode, the riveting angle is larger than 90 degrees, the pushing force acting on the valve core disk is transmitted to the bottom of the groove of the valve core shell, the stress state of the valve core shell is changed, and the elastic deformation of the pressure stress is changed into the plastic deformation of the shearing stress, so that the riveting strength is greatly improved.

In some embodiments, the limiting component comprises a mounting groove arranged on the valve core shell and a shell clamping groove arranged around the mounting groove;

the limiting part also comprises a bulge and a groove which are arranged on the valve core disc; the protrusion is connected with the shell clamping groove in a matched mode.

In the above scheme, the installation groove is arranged on the inner wall of the valve core shell, the valve core disc is clamped into the installation groove of the valve core shell, the force acting on the valve core disc can be directly transmitted to the valve core shell, and the position is limited through the material of the valve core body, so that the connection strength of the valve core disc and the valve core shell is greatly improved, and the valve core disc is prevented from being separated from the valve core shell.

In some embodiments, the material of the poppet disk comprises one of low carbon steel, alloy steel, or stainless steel.

In some embodiments, the material of the spool support comprises one of low carbon steel, alloy steel, or stainless steel.

In some embodiments, the material of the cartridge housing comprises one of low carbon steel, alloy steel, or stainless steel.

In a second aspect, the present application further provides an oil control valve, which includes a bolt housing and the anti-loose valve element installed in any one of the above-mentioned bolt housings.

In the scheme, the anti-loosening valve core is arranged in the bolt shell, so that the reliability of the whole system of the engine oil control valve is greatly improved, and the whole durability of an engine is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of a first anti-loosening valve element according to the present invention;

FIG. 2 is a schematic structural view of a second anti-loosening valve element according to the present invention;

FIG. 3 is a schematic diagram of a second anti-loose valve element of the present invention;

FIG. 4 is a schematic structural view of a third anti-release valve cartridge of the present invention;

FIG. 5 is an assembled view of a third anti-release valve cartridge of the present invention;

FIG. 6 is a schematic diagram of a third anti-loose valve core disc structure of the present invention;

FIG. 7 is a schematic view of a third anti-release valve cartridge housing of the present invention;

FIG. 8 is a schematic view of a valve core support structure of the anti-loosening valve core of the present invention;

fig. 9 is a schematic structural view of the oil control valve of the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, "and/or" in the whole text includes three schemes, taking a and/or B as an example, including a technical scheme, and a technical scheme that a and B meet simultaneously; in addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Example one

As shown in fig. 1 to 8, an anti-loose valve core includes a valve core housing 120, a valve core support 130 disposed inside the valve core housing 120, and a valve core disk 110 disposed in a ring groove at one end of the valve core housing 120; wherein the valve core support 130 is centrally connected to the valve core disk 110.

In this embodiment, the valve core support 130 is a cross structure, and a guide outer circle 133 is disposed on the valve core support 130.

In some embodiments, the poppet disc 110 is welded to the poppet housing 120. Specifically, as shown in fig. 1, the spool support 130 is installed in the spool housing 120, and the coaxiality control between the spool support 130 and the inner diameter of the spool housing 120 is realized through the matching tolerance between the spool support 130 and the inner diameter of the spool housing. The first check valve 140 and the second check valve 160 are installed on the outer diameter of the spool support 130, and the check valve spring 150 is installed between the first check valve 140 and the second check valve 160. The valve core disk 110 is installed in the left side annular groove of the valve core shell 120, and the valve core disk 110 and the valve core shell 120 are connected together through welding. After the spool disc 110 and the spool housing 120 are connected, the spool support 130, the check valve spring 150, and the check valve are all enclosed inside the spool housing 120, thereby achieving the integrated assembly of the spool assembly.

In some embodiments, a position of the spool housing 120 connected to the spool disk 110 is provided with a position-limiting component, and the position-limiting component fixes the spool disk 110 to the spool housing 120.

In this embodiment, the limiting component includes a guide outer diameter 211 and a guide inner diameter 212 that are disposed on the valve core disk 110, the guide outer diameter 211 and the inner wall of the valve core housing 120 form a riveting connection, and a riveting angle between the guide outer diameter 211 and the valve core housing 120 is at least 90 °; the pilot bore 212 forms a riveted connection with the outer wall of the cartridge support 130. Preferably, the riveting angle between the guide outer diameter 211 and the valve core housing 120 is 90 °, so that the pushing force acting on the valve core disk 110 is transmitted to the bottom of the groove of the valve core housing 120, the stress state of the valve core housing 120 changes, and the elastic deformation of the pressure stress is changed into the plastic deformation of the shear stress, thereby greatly improving the riveting strength.

On the other hand, in the present embodiment, the limiting member includes a mounting groove 321 provided on the valve core housing 120 and a housing engaging groove 322 disposed around the mounting groove 321;

the limiting component further comprises a protrusion 311 and a groove 312 which are arranged on the valve core disc 110; the protrusion 311 is connected with the housing slot 322 in a matching manner. When the valve core disk 110 is installed, the protrusion 311 of the valve core disk 110 is installed through the notch of the valve core housing 120, and then the valve core disk 110 is rotated by an angle, so that the protrusion 311 of the valve core disk 110 is completely locked in the housing clamping groove 322 of the valve core housing 120, and the valve core disk 110 and the valve core housing 120 are prevented from being loosened.

The materials of the cartridge disk 110, the cartridge support 130, and the cartridge housing 120 in the embodiment of the present application include, but are not limited to, low carbon steel, alloy steel, stainless steel, and the like.

In addition, when the embodiment of the present application is implemented, the valve core disk 110, the valve core support 130, and the valve core housing 120 may also be made of other metal alloys or non-metal materials.

In the concrete application, when the valve core assembly works, the interior of the valve core assembly is filled with high-pressure hydraulic oil, and the oil pressure is constantly fluctuated. The oil pressure acts on the check valve inside the spool assembly and is ultimately transmitted to the spool disc 110 through the spool support 130, so that fluctuations in oil pressure are directly translated into alternating thrust action on the spool disc 110. In the embodiment of the present application, the valve core support 130 directly acts on the valve core disk 110, so that even if there is a certain deviation in the perpendicularity between the valve core support 130 and the valve core disk 110, the moment of the thrust from the valve core support 130 to the supporting point of the valve core disk 110 is very short, and the moment is small, so that the unbalance loading effect is greatly reduced, thereby reducing the stress concentration at the positions of the valve core disk 110 and the valve core housing 120, and improving the reliability of the system.

On the other hand, in the embodiment of the application, by optimizing the connection mode of the valve core disk 110 and the valve core shell 120, the connection strength is greatly improved by adopting a welding, riveting or clamping groove type structure, and the valve core assembly is prevented from being disassembled due to the fact that the valve core disk 110 is separated from the valve core shell 120 in work.

Example two

As shown in fig. 9, an oil control valve includes a bolt housing 200, and the anti-release valve cartridge 100 of any one of the above items mounted in the bolt housing.

The structure of the engine oil control valve is as shown in fig. 9, the valve core assembly is installed inside the bolt shell 200, the position is limited through the step surface on the left side of the bolt shell 200, the return spring 300 is installed between the valve core assembly and the oil inlet filter element assembly 400, the oil inlet filter element assembly 400 is in interference crimping inside the bolt shell 200, the position is limited through the step surface in the inner hole of the bolt shell 200, and the accuracy of the installation position of the oil inlet filter element is guaranteed.

After the oil inlet filter element is installed in place, the return spring 300 is in a compressed state, and the limit step of the bolt shell 200 ensures that the compression pretightening force of the return spring 300 is within the design range. When the engine oil control valve is in a free state, the filter element assembly is pushed to the left limiting step of the bolt shell 200 under the elastic force action of the return spring 300, and the valve element assembly is ensured to be in an initial accurate position.

The anti-loosening valve core is arranged in the bolt shell 200, so that the reliability of the whole system of the engine oil control valve is greatly improved, and the whole durability of an engine is improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.