阅读说明：本技术 一种汽车发动机旋阀器 (Automobile engine rotary valve device ) 是由 刘伟 叶拓 邓彬 刘安民 吴远志 谭金文 于 2019-10-09 设计创作，主要内容包括：一种汽车发动机旋阀器,安装在气阀弹簧和摇臂之间,包括可拆卸的固定部和旋转部,所述固定部与气阀弹簧结合,所述旋转部与气阀阀杆结合,所述固定部与旋转部间设有促使二者发生相对转动的转动机构,所述旋转部受到摇臂下压力作用时,所述下压力作用到转动机构上从而促使旋转部相对于固定部转动。本发明之汽车发动机旋阀器,能够在摇臂周期性下压力的作用下保持旋阀器旋盖周期性的转动,从而实现气阀相对于阀座的周期性转动,工作可靠,转动周期规律,降低气阀因为积碳不均匀造成的密封问题的发生概率。(The utility model provides an automobile engine spiral valve ware, installs between valve spring and rocking arm, includes detachable fixed part and rotating part, the fixed part combines with valve spring, the rotating part combines with the valve stem, be equipped with between fixed part and the rotating part and make the two take place relative pivoted slewing mechanism, the rotating part receives the rocking arm down the pressure effect during, thereby the downforce is used and is impeld the rotating part to rotate for the fixed part on the slewing mechanism. The automobile engine rotary valve device can keep the rotary valve device rotary cover to periodically rotate under the action of the periodic downward pressure of the rocker arm, so that the air valve periodically rotates relative to the valve seat, the work is reliable, the rotation period is regular, and the occurrence probability of the sealing problem caused by uneven carbon deposition of the air valve is reduced.)

1. The utility model provides an automobile engine valve rotating device, installs between valve spring and rocking arm, its characterized in that: automobile engine rotary valve ware includes detachable fixed part and rotating part, the fixed part combines with the valve spring, the rotating part combines with the valve rod, be equipped with between fixed part and the rotating part and make the two take place relative pivoted slewing mechanism, the rotating part receives the rocking arm under the pressure effect during, thereby the downforce makes the rotating part rotate for the fixed part on using slewing mechanism.

2. The automotive engine valve spinner of claim 1, characterized in that: the rotating mechanism comprises a first rotating mechanism, the first rotating mechanism comprises inserting teeth arranged on the fixed part and annular teeth arranged on the rotating part, and the tooth pitch and tooth profile of the inserting teeth and the tooth profile of the annular teeth are the same and have the same inclined tooth surface; under the condition of not being pressed by the rocker arm, the tooth surface of the inserting tooth is not contacted with the tooth surface of the annular tooth; the inserting teeth are contacted with the tooth surfaces of the annular teeth and slide along the tooth surfaces when the rotating part is pressed by the rocker arm, so that the rotating part rotates relative to the fixed part.

3. The automotive engine valve spinner of claim 2, characterized in that: still be equipped with second slewing mechanism, second slewing mechanism is including setting up the annular on the rotating part, the degree of depth of annular is sinusoidal, the position relative with the annular on the fixed part is equipped with the ball slot, the ball has been laid in the ball slot, and when the rotating part receives the rocking arm under the pressure effect to act on, the ball rolls the darker position of annular with the annular contact and from the shallower position of annular, makes the rotating part take place to rotate for the fixed part.

4. The automotive engine valve spinner of claim 3, characterized in that: the cylindrical roller bearing is further provided with a third rotating mechanism, the third rotating mechanism comprises a cylindrical roller retainer and an annular clamp spring, the cylindrical roller retainer and the annular clamp spring are arranged between a fixed part and a rotating part, a plurality of accommodating grooves for accommodating cylindrical rollers are arranged on the fixed part, the edges of adjacent accommodating grooves are connected together, at least one edge of each accommodating groove is provided with a sliding transition section, and a spring tongue of the annular clamp spring is abutted against the surface of the cylindrical roller; the cylindrical roller retainer and the annular clamp spring are immovably mounted on the rotating part, and when the rotating part rotates relative to the fixed part to cause the cylindrical roller to be separated from one accommodating groove and rotate to the slippage transition section, the spring tongue acts on the cylindrical roller to enable the cylindrical roller to roll into the other adjacent accommodating groove.

5. The automotive engine rotary valve device according to any one of claims 1 to 4, characterized in that: still be equipped with the elasticity recovery part between fixed part and rotating part, the elasticity recovery part makes fixed part and rotating part do not work as time of pressure under not having the rocking arm rotating mechanism.

6. The automotive engine valve spinner of claim 1, characterized in that: automobile engine rotary valve ware includes spring holder, annular jump ring, cylindrical roller holder, rotatory pressure spring, locking closure and spiral cover from bottom to top in proper order, annular jump ring is installed at the spiral cover inboardly, cylindrical roller holder inlays the dress in annular jump ring, thereby locking cylindrical roller holder and annular jump ring are installed at the spiral cover lower edge to the locking closure screw thread, thereby rotatory pressure spring is installed and is made the two keep certain compressible clearance in the clearance between spring holder and spiral cover, rotatory pressure spring produces a drive spiral cover horizontal direction pivoted drive power after the pressurized.

7. The automotive engine valve spinner of claim 6, characterized in that: the bottom of the spring seat is sunken to form an accommodating part for accommodating the air valve spring; the upper part of the spring seat is provided with a boss matched with the cylindrical roller retainer, the annular clamp spring and the screw cap, the peripheral surface of the boss is provided with a circle of annular accommodating groove for accommodating part of the cylindrical roller, the middle part of the boss is downwards sunken to form a cylindrical first accommodating cavity, and the bottom of the first accommodating cavity is provided with an annular ball groove; balls are placed on the ball grooves; a series of triangular plug-in keys are uniformly arranged on the upper part of the first accommodating cavity along the inner wall of the cylindrical first accommodating cavity; the cylindrical roller retainer comprises an annular base and flanges which are vertically arranged on the base and are uniformly arranged, a cylindrical roller is arranged between every two adjacent flanges, and the height of the cylindrical roller is the same as that of the flanges; the annular clamp spring is annular, clamp spring tongues uniformly arranged are arranged on the annular clamp spring inwards, and spring plates for positioning are arranged on the outer side of the annular clamp spring; the rotary pressure spring comprises an integrally formed disc-shaped spring steel disc body and a series of pressure spring tongues, the middle part of the disc body is hollow, the pressure spring tongues are uniformly arranged around the central line of the disc body, the opening direction of the pressure spring tongues is vertical to the root space of the tongues and is intersected with any straight line space in the center of the disc body along the radius direction; the bottom of the spiral cover is inwards sunken to form a cavity, the center of the cavity is upwards protruded to form a matching part matched with the boss of the spring seat, the matching part is cylindrical, and the bottom surface of the matching part is provided with an annular groove capable of accommodating a ball at the bottom of the boss; the outer peripheral face of the matching portion and the position close to the bottom are provided with annular teeth, positioning grooves which are evenly distributed are formed in the inner wall of a spiral cover of the annular teeth, the bottom of the cavity is provided with insertion holes which are used for facilitating positioning of the cylindrical roller retainer, and the outer peripheral face of the bottom of the spiral cover is provided with external threads.

8. The automotive engine valve spinner of claim 7, characterized in that: the cross-section of the lock cover is U-shaped, the outer side of the lock cover is provided with a threaded part, and the inner side of the lock cover is provided with a locking part.

Technical Field

The invention relates to a rotary valve device of an automobile engine.

Background

For an automobile engine, an air inlet valve and an air outlet valve are relatively precise and expensive components, the processing precision is high, the processing materials are expensive, the air valve and a valve seat are matched to play the roles of an air inlet valve and an air outlet valve, and a valve disc and a valve rod of the air valve can bear the extremely high temperature of smoke in a combustion chamber; when exhausting, the high-temperature flue gas erodes the valve disc; due to the problems of the layout of the exhaust valve, the flow rates of smoke exhausted from different positions of the valve disc are different, so that local heating is uneven and deformation is caused; on the other hand, a certain position of the valve disc is washed by a large amount of carbon-containing smoke for a long time, and the surface of the valve disc is also subjected to coking and carbon deposition; both of the two can influence the contact surface sealing performance of valve disc and disk seat, consequently, even if adopt high temperature resistant nichrome to overcome the influence of thermal stress, some automobile engine still can set up the valve cock ware and reach and make the pneumatic valve periodically rotate to it is heated as far as possible and the carbon deposit is even.

European union patent (application number 95113290.1) discloses a rotary valve device, this rotary valve device include with the last casing of valve rod upper portion joint with install the lower casing on the engine cylinder cap, the internal lateral wall of lower casing has set up the recess (or the guide block) of specific route, go up the casing lateral wall and have set up the direction arch with recess (or guide block) complex, when the valve rod takes place the periodicity under the effect of rocking arm and moves along the valve rod body of rod direction, the direction arch of going up the casing lateral wall just also can be along the specific route motion that recess (or guide block) set for to the rotation of casing (go up casing and valve rod time friction fit, so just also can drive the valve rod rotation) under the realization. The problem of this solution is that the rocker arm needs to overcome a certain resistance (the guide projection needs to overcome the resistance of the groove or the guide block when moving in a specific path), that is, the energy of the rocker arm (or even the camshaft) pressing down is consumed, meanwhile, if the guide projection moves slightly between the groove or the guide block, the snap ring clamped between the valve rod and the upper housing may loosen due to the action of high frequency, so that the connection between the intake and exhaust valve rod and the intake and exhaust spring is lost, which endangers the engine safety; if the air valve is stuck at a certain position, the air valve is likely to be hit by the piston, which directly causes damage to the air valve, the cam mandril and the rocker arm, and causes disastrous results.

U.S. Pat. No. 4425882 discloses a rotary valve device made of a disk spring, an annular spring and a housing, which uses the upper and lower housings of the rotary valve device to move relatively to each other due to the deformation of the annular spring under pressure to achieve the function of rotating an intake/exhaust valve, however, since the rotary action depends on the friction force between the annular spring and the upper and lower housings of the rotary valve device, when the annular spring works with the upper and lower housings, there is a jamming and corrosion between the annular spring and the upper and lower housings, or over-lubrication (the engine works in a working space with oil stain and oil mist, and the oil forced for lubrication by the rocker arm set is likely to infiltrate into the rotary valve device), the rotary valve device works unreliably, and is likely to rotate without rotation, which affects the actual use effect, when the carbon deposit appears on the valve rod, and the valve rod guide tube on the frame is jammed, the valve spinner may not operate at all.

Referring to fig. 1, generally, an air valve of an automobile engine includes a valve rod and a valve disc, a valve is formed between the air valve and a valve seat to control the gas entering and discharging in a combustion chamber, the valve rod passes through an air valve guide pipe on a cylinder head, a valve rotating device is installed between an air valve spring and a rocker arm, and the valve disc is tightly attached to the valve seat all the time under the action of the air valve spring; when the rocker arm moves downwards, the pressure head of the rocker arm presses the top end of the valve rod downwards, and the top end of the valve rod is tightly matched with the valve rotating device, so that the valve rotating device moves downwards in the pressing-down process and compresses the valve spring.

In addition, the rotary valve device also plays a role in rotating the air valve along the central axis of the valve rod, and the rotary valve device in the prior design cannot ensure the reliable rotation of the rotary valve device. Therefore, a rotary valve device which has higher rotation reliability, is not easy to generate clamping stagnation and does not endanger the normal work of an air inlet valve and an air outlet valve of an engine even if the clamping stagnation is generated is needed at present.

Disclosure of Invention

The invention aims to solve the technical problem of providing a rotary valve device which has higher rotation reliability, is not easy to generate clamping stagnation and can not crisis the normal work of an air inlet valve and an air outlet valve of an engine even if the clamping stagnation occurs.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an automobile engine spiral valve ware, installs between valve spring and rocking arm, includes detachable fixed part and rotating part, the fixed part combines with valve spring, the rotating part combines with the valve stem, be equipped with between fixed part and the rotating part and make the two take place relative pivoted slewing mechanism, the rotating part receives the rocking arm down the pressure effect during, thereby the downforce is used and is impeld the rotating part to rotate for the fixed part on the slewing mechanism.

Further, the rotating mechanism comprises a first rotating mechanism, the first rotating mechanism comprises inserting teeth arranged on the fixed part and annular teeth arranged on the rotating part, and the tooth pitch and tooth profile of the inserting teeth and the tooth profile of the annular teeth are the same and have the same inclined tooth surface; under the condition of not being pressed by the rocker arm, the tooth surface of the inserting tooth is not contacted with the tooth surface of the annular tooth; the inserting teeth are contacted with the tooth surfaces of the annular teeth and slide along the tooth surfaces when the rotating part is pressed by the rocker arm, so that the rotating part rotates relative to the fixed part.

Further, still be equipped with second slewing mechanism, second slewing mechanism is including setting up the annular on the rotating part, the degree of depth of annular is sinusoidal, the position relative with the annular on the fixed part is equipped with the ball slot, the ball has been laid in the ball slot, and when the rotating part receives the rocking arm under the pressure effect, the ball rolls the darker position of annular with the annular contact and from the shallower position of annular, makes the rotating part take place to rotate for the fixed part.

The cylindrical roller bearing is characterized by further comprising a third rotating mechanism, wherein the third rotating mechanism comprises a cylindrical roller retainer and an annular clamp spring, the cylindrical roller retainer and the annular clamp spring are arranged between a fixed part and a rotating part, a plurality of accommodating grooves for accommodating cylindrical rollers are arranged on the fixed part, the edges of adjacent accommodating grooves are connected together, at least one edge of each accommodating groove is provided with a sliding transition section, and a spring tongue of the annular clamp spring abuts against the surface of each cylindrical roller; the cylindrical roller retainer and the annular clamp spring are immovably mounted on the rotating part, and when the rotating part rotates relative to the fixed part to cause the cylindrical roller to be separated from one accommodating groove and rotate to the slippage transition section, the spring tongue acts on the cylindrical roller to enable the cylindrical roller to roll into the other adjacent accommodating groove.

Further, an elastic recovery component is arranged between the fixed part and the rotating part, and the elastic recovery component enables the rotating mechanism to be out of work when the fixed part and the rotating part do not have the pressure under the rocker arm.

Further, automobile engine rotary valve ware includes spring holder, annular jump ring, cylindrical roller holder, rotatory pressure spring, locking closure and spiral cover from bottom to top in proper order, the annular jump ring is installed at the spiral cover inboard, the cylindrical roller holder inlays the dress in the annular jump ring, thereby locking closure screw thread installation locks cylindrical roller holder and annular jump ring at the spiral cover lower edge, thereby rotatory pressure spring is installed and is made the two keep certain compressible clearance in the clearance between spring holder and spiral cover, produce a drive spiral cover horizontal direction pivoted drive power after rotatory pressure spring pressurized.

Further, the bottom of the spring seat is sunken to form an accommodating part for accommodating a gas valve spring; the upper part of the spring seat is provided with a boss matched with the cylindrical roller retainer, the annular clamp spring and the screw cap, the peripheral surface of the boss is provided with a circle of annular accommodating groove for accommodating part of the cylindrical roller, the middle part of the boss is downwards sunken to form a cylindrical first accommodating cavity, and the bottom of the first accommodating cavity is provided with an annular ball groove; balls are placed on the ball grooves; a series of triangular plug-in keys are uniformly arranged on the upper part of the first accommodating cavity along the inner wall of the cylindrical first accommodating cavity; the cylindrical roller retainer comprises an annular base and flanges which are vertically arranged on the base and are uniformly arranged, a cylindrical roller is arranged between every two adjacent flanges, and the height of the cylindrical roller is the same as that of the flanges; the annular clamp spring is annular, clamp spring tongues uniformly arranged are arranged on the annular clamp spring inwards, and spring plates for positioning are arranged on the outer side of the annular clamp spring; the rotary pressure spring comprises an integrally formed disc-shaped spring steel disc body and a series of pressure spring tongues, the middle part of the disc body is hollow, the pressure spring tongues are uniformly arranged around the central line of the disc body, the opening direction of the pressure spring tongues is vertical to the root space of the tongues and is intersected with any straight line space in the center of the disc body along the radius direction; the bottom of the spiral cover is inwards sunken to form a cavity, the center of the cavity is upwards protruded to form a matching part matched with the boss of the spring seat, the matching part is cylindrical, and the bottom surface of the matching part is provided with an annular groove capable of accommodating a ball at the bottom of the boss; the outer peripheral face of the matching portion and the position close to the bottom are provided with annular teeth, positioning grooves which are evenly distributed are formed in the inner wall of a spiral cover of the annular teeth, the bottom of the cavity is provided with insertion holes which are used for facilitating positioning of the cylindrical roller retainer, and the outer peripheral face of the bottom of the spiral cover is provided with external threads.

Furthermore, the cross section of the lock cover is U-shaped, the outer side of the lock cover is provided with a threaded part, and the inner side of the lock cover is provided with a locking part.

The invention has the beneficial effects that:

the rotary valve device can keep the rotary part of the rotary valve device to periodically rotate relative to the fixed part under the action of the periodic downward pressure of the rocker arm, so that the air valve periodically rotates relative to the valve seat, the work is reliable, the rotation period is regular, and the occurrence probability of the sealing problem of the air valve caused by uneven carbon deposition is reduced.

Drawings

FIG. 1 is a schematic diagram of a cylinder head and valve assembly of an automotive engine of prior art design;

FIG. 2 is a disassembled perspective view of the components of the embodiment of the present invention;

FIG. 3 is a disassembled view of the components of the embodiment of the present invention;

FIG. 4 is an assembled cross-sectional view of components of an embodiment of the present invention;

FIG. 5 is a perspective view of a spring seat of an embodiment of the present invention;

FIG. 6 is a perspective view of a spring seat of an embodiment of the present invention;

FIG. 7 is a perspective view of a cylindrical roller cage according to an embodiment of the present invention;

FIG. 8 is a schematic view of a ring clamp spring according to an embodiment of the present invention;

fig. 9 is a schematic view of a rotary compression spring according to an embodiment of the present invention;

FIG. 10 is a schematic view of a screw cap according to an embodiment of the present invention;

FIG. 11 is a schematic view of a locking cap according to an embodiment of the present invention;

FIG. 12 is a schematic view of a ball groove of a spin cap in accordance with an embodiment of the present invention;

FIG. 13 is a rotary explanatory view of the screw cap according to the embodiment of the present invention;

FIG. 14 is a schematic view of the movement of the ring teeth and the socket key according to the embodiment of the present invention;

FIG. 15 is a schematic view of another ring tooth profile of an embodiment of the present invention;

FIG. 16 is a schematic diagram of the force of a rotating compression spring according to an embodiment of the present invention;

FIG. 17 is a schematic view of a faucet installation of an embodiment of the present invention;

FIG. 18 is a schematic view of a ball groove and ring tooth design according to an embodiment of the present invention.

Detailed Description

The invention is further explained with reference to the drawings and the embodiments.