阅读说明：本技术 发动机中置皮带式vvt系统多功能支架 (Belt type VVT system multifunctional support in engine ) 是由 叶辉 解小超 吴永 王兆远 张波 王乐 杨攀 李雪 王右 于 2021-08-06 设计创作，主要内容包括：本发明公开了一种发动机中置皮带式VVT系统多功能支架,包括支架本体,支架本体为圆形结构,支架本体上沿其边缘处形成有多个连接柱,支架本体通过连接柱固定安装在缸盖安装面上,支架本体与凸轮轴正时齿轮同轴布置,支架本体的中心位置形成有油封安装孔,凸轮轴正时齿轮上形成有圆环状密封凸台,油封安装孔内设置有油封,圆环状密封凸台与油封插接配合。本发明能够有效解决润滑油渗出问题,保证中置皮带驱动的正常工作。(The invention discloses a multifunctional support of a belt type VVT (variable valve timing) system in an engine, which comprises a support body, wherein the support body is of a circular structure, a plurality of connecting columns are formed on the support body along the edge of the support body, the support body is fixedly arranged on a cylinder cover mounting surface through the connecting columns, the support body and a camshaft timing gear are coaxially arranged, an oil seal mounting hole is formed in the center of the support body, an annular sealing boss is formed on the camshaft timing gear, an oil seal is arranged in the oil seal mounting hole, and the annular sealing boss is in plug-in fit with the oil seal. The invention can effectively solve the problem of lubricating oil seepage and ensure the normal work of the middle belt drive.)

1. The utility model provides a put multi-functional support of belt VVT system in engine, includes support body (1), its characterized in that: support body (1) is circular structure, be formed with a plurality of spliced poles (2) along its edge on support body (1), support body (1) passes through spliced pole (2) fixed mounting is on cylinder cap installation face (3), support body (1) and camshaft timing gear (4) coaxial arrangement, the central point of support body (1) puts and is formed with oil blanket mounting hole (5), be formed with ring form sealed boss (6) on camshaft timing gear (4), be provided with oil blanket (7) in oil blanket mounting hole (5), ring form sealed boss (6) with oil blanket (7) are pegged graft and are cooperated.

2. The multifunctional support of the belt-type VVT system in an engine according to claim 1, wherein: the upper portion of support body (1) is formed with fan-shaped breach (8), be provided with fan-shaped belt baffle (9) on fan-shaped breach (8), fan-shaped belt baffle (9) are used for blockking the belt, prevent that the belt from following the upper portion of camshaft timing gear (4) breaks away from.

3. The multifunctional support of the belt-type VVT system in an engine according to claim 2, wherein: and a flanging structure (10) is formed at the end part of the fan-shaped belt baffle (9).

4. The mid-belt VVT system multifunctional bracket for an engine according to any one of claims 1 to 3, wherein: be provided with VVT executor installation base (11) on the outer terminal surface of support body (1), VVT executor installation base (11) with support body (1) coaxial arrangement, have two symmetrical arrangement's executor installation screw (12) on VVT executor installation base (11).

5. The multifunctional support of the belt-in-engine VVT system of claim 4, wherein: the VVT actuator mounting boss (11) is of a circular ring-shaped structure.

6. The multifunctional support of the belt-in-engine VVT system of claim 5, wherein: the number of the connecting columns (2) is three.

Technical Field

The invention relates to a support, in particular to a multifunctional support for a belt VVT system in an engine.

Background

There are currently two main driving methods for VVT variable valve timing systems: one is a side-mounted belt drive; the other is a central chain drive, and the two drive modes have advantages and disadvantages respectively.

The side belt driving mode has the advantages that the belt driving is beneficial to improving the noise reduction level of the engine, and has the defect that the VVT response speed is relatively slow; the middle-set chain drive has the advantages that the VVT response speed is higher, the engine valve adjustment is more facilitated, and the chain drive is not beneficial to the noise reduction of the engine.

Based on the advantages of two modes, if the engine uses a central belt drive VVT system, an important problem needs to be solved: the OCV valve of the central VVT system inevitably has a large amount of lubricating oil exudation, which can cause belt slip, timing disorder and belt durability reduction, and even cause valve impact piston and engine damage, and no good solution is provided at present for the problems.

Disclosure of Invention

The invention aims to provide a multifunctional support of a belt VVT system in an engine, which can solve the defects in the prior art, effectively solve the problem of lubricating oil seepage and ensure the normal work of the driving of a middle belt.

The invention provides a multifunctional support of a belt type VVT system in an engine, which comprises a support body, wherein the support body is of a circular structure, a plurality of connecting columns are formed on the support body along the edge of the support body, the support body is fixedly arranged on a cylinder cover mounting surface through the connecting columns, the support body and a camshaft timing gear are coaxially arranged, an oil seal mounting hole is formed in the center of the support body, an annular sealing boss is formed on the camshaft timing gear, an oil seal is arranged in the oil seal mounting hole, and the annular sealing boss is in plug-in fit with the oil seal.

In the multifunctional support for the belt-type VVT system in the engine, preferably, a sector notch is formed above the support body, and a sector belt baffle is arranged on the sector notch and used for blocking a belt to prevent the belt from being separated from the upper portion of the camshaft timing gear.

In the multifunctional support for the belt VVT system in the engine, preferably, a flanged structure is formed at an end of the fan-shaped belt baffle.

In the multifunctional support for a belt-type VVT system disposed in an engine, preferably, a VVT actuator mounting boss is disposed on an outer end surface of the support body, the VVT actuator mounting boss and the support body are coaxially arranged, and two actuator mounting screw holes symmetrically arranged are formed in the VVT actuator mounting boss.

In the multifunctional support for a belt-type VVT system disposed in an engine, preferably, the VVT actuator mounting boss is of a circular ring structure.

In the multifunctional support for the belt VVT system in an engine, the number of the connecting columns is preferably three.

Compared with the prior art, the camshaft timing gear support comprises a support body, wherein the support body is of a circular structure, a plurality of connecting columns are formed on the support body along the edge of the support body, the support body is fixedly installed on a cylinder cover installation surface through the connecting columns, the support body and the camshaft timing gear are coaxially arranged, an oil seal installation hole is formed in the center of the support body, an annular sealing boss is formed on the camshaft timing gear, an oil seal is arranged in the oil seal installation hole, and the annular sealing boss is in plug-in fit with the oil seal. Through setting up the support body, set up oil blanket mounting hole and oil blanket on the support body, through the cooperation of the sealed boss of the ring form on oil blanket and the camshaft timing gear, can effectively prevent the position oil leak of OCV valve to on having prevented that fluid from being got rid of the belt, through the setting of putting the belt in, under the faster prerequisite of having guaranteed VVT response speed, can also guarantee the engine noise reduction effect.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a side, semi-sectional view of the overall structure of the present invention;

FIG. 3 is an isometric view of the invention in use;

fig. 4 is a side half-sectional view of the present invention in use.

Description of reference numerals: the cam shaft timing gear comprises a support body 1, a connecting column 2, a cylinder cover mounting surface 3, a cam shaft timing gear 4, an oil seal mounting hole 5, a circular ring-shaped sealing boss 6, an oil seal 7, a fan-shaped notch 8, a fan-shaped belt baffle 9, a flanging structure 10, a VVT actuator mounting boss 11, an actuator mounting screw hole 12, an OCV valve 13 and a belt 14.

Detailed Description

The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

The embodiment of the invention comprises the following steps: as shown in fig. 1-4, a multifunctional support for a belt-type VVT system in an engine includes a support body 1, the support body 1 is a circular structure, a plurality of connection posts 2 are formed on the support body 1 along the edge of the support body, in this embodiment, the number of the connection posts 2 is three, and the connection posts are respectively disposed on two sides and a lower side of the support body 1, a camshaft timing gear 4 is rotatably mounted on a cylinder head mounting surface 3 through an OCV valve 13, the support body 1 is fixedly mounted on the cylinder head mounting surface 3 through the three connection posts 2, the support body 1 is coaxially disposed with the camshaft timing gear 4, the support body 1 can cover the camshaft timing gear 4, an oil seal mounting hole 5 is formed at the center of the support body 1, a circular seal boss 6 is formed on the camshaft timing gear 4, the circular seal boss 6 is coaxially disposed with the camshaft timing gear 4, and is located camshaft timing gear 4 on the terminal surface towards support body 1, is provided with oil blanket 7 in the oil blanket mounting hole 5, and circular ring shape sealing boss 6 is pegged graft with oil blanket 7 and is cooperated, and circular ring shape sealing boss 6 is for rotary fit with oil blanket 7.

According to the invention, the oil seal mounting hole 5 is formed in the bracket body 1, the oil seal 7 is arranged in the oil seal mounting hole 5, and oil leaked from the position of the OCV valve 13 cannot leak under the action of the oil seal 7, so that the oil is prevented from being thrown onto the belt 14, and the problems of slipping and damage of the belt 14 are effectively solved. Through this setting, the middle of belt 14 has been realized, and the setting through belt 14 can also guarantee the engine noise reduction effect under the prerequisite of having guaranteed that VVT response speed is faster.

In a specific embodiment, the outer diameter of the bracket body 1 is larger than the outer diameter of the camshaft timing gear 4, a sector-shaped notch 8 is formed above the bracket body 1, a sector-shaped belt baffle 9 is arranged on the sector-shaped notch 8, and the sector-shaped belt baffle 9 is used for blocking a belt and preventing the belt from being separated from the upper part of the camshaft timing gear 4. The end of the fan-shaped belt baffle 9 is formed with a flanging structure 10.

Through the setting of fan-shaped belt baffle 9 and turn-ups structure 10, can prevent effectively that belt 14 from sideslipping, design the retaining ring on camshaft timing gear generally, but this design is very high to the technological requirement, and the cost is great. Can prevent through fan-shaped belt baffle 9 that the belt from sideslipping, simultaneously, reduce camshaft timing gear processing technology requirement.

Further, a VVT actuator mounting boss 11 is provided on the outer end face of the bracket body 1, the VVT actuator mounting boss 11 is arranged coaxially with the bracket body 1, and two actuator mounting screw holes 12 are symmetrically arranged on the VVT actuator mounting boss 11. The VVT actuator mounting boss 11 has an annular structure.

The traditional VVT actuator is generally arranged on an aluminum front cover of an engine, for the engine partially adopting a plastic cover, the risk of oil leakage failure can occur after the actuator is arranged, and the problem can be solved by arranging a VVT actuator mounting boss 11 on the outer end face of the support body 1.

The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.