阅读说明：本技术 一种无油涡旋式汽车刹车真空助力泵 (Oil-free vortex type automobile brake vacuum booster pump ) 是由 朱宏林 *** 陆晓良 于 2020-08-06 设计创作，主要内容包括：本发明公开了一种无油涡旋式汽车刹车真空助力泵,包括基座、静盘、动盘、浮动隔离环和防自转机构,所述静盘上设有排气口,静盘和动盘对置安装,动盘与偏心驱动装置相连并随偏心驱动装置发生转动且动盘转动时在防自转机构约束作用下形成摆动,所述偏心驱动装置安装在基座上,所述防自转机构分别与动盘、基座相连,排气口设有单向止回阀,所述防自转机构包括上防转垫、下防转垫和滚珠,滚珠上、下端分别配合安装在设置在上防转垫、下防转垫上的弧形限位槽内,所述浮动隔离环分别与动盘、基座相连使得动盘、基座之间形成一个独立的运动区域。本发明具有防倒吸水有效避免制动器失效,工作平稳且摩擦系数低噪音小,使用寿命长等优点。(The invention discloses an oil-free vortex type automobile brake vacuum booster pump which comprises a base, a static disc, a movable disc, a floating isolation ring and an anti-rotation mechanism, wherein an exhaust port is formed in the static disc, the static disc and the movable disc are oppositely arranged, the movable disc is connected with an eccentric driving device and rotates along with the eccentric driving device, and swings are formed under the constraint action of the anti-rotation mechanism when the movable disc rotates, the eccentric driving device is arranged on the base, the anti-rotation mechanism is respectively connected with the movable disc and the base, a one-way check valve is arranged on the exhaust port, the anti-rotation mechanism comprises an upper anti-rotation pad, a lower anti-rotation pad and balls, the upper end and the lower end of each ball are respectively matched and arranged in arc-shaped limiting grooves formed in the upper anti-rotation pad and the lower anti-rotation pad, and the floating isolation ring is respectively connected with the. The invention has the advantages of preventing water from being sucked reversely, effectively avoiding the failure of the brake, working stably, low friction coefficient, low noise, long service life and the like.)

1. The utility model provides an there is not oily vortex formula car brake vacuum booster pump, includes base, quiet dish, driving disk and prevents rotation mechanism, be equipped with gas vent and air inlet on the quiet dish, quiet dish and driving disk opposition installation, driving disk and eccentric drive device link to each other and take place to rotate and when driving disk rotates preventing rotation mechanism constraint effect from forming the swing down along with eccentric drive device, eccentric drive device installs on the base, prevent that rotation mechanism links to each other its characterized in that with driving disk, base respectively: still including unsteady isolating ring, the gas vent is equipped with one-way check valve, prevent that rotation mechanism includes that it prevents changeing the pad, prevents changeing pad and ball down, the upper and lower end of ball cooperates respectively to install and sets up at last preventing changeing the pad, prevent the arc spacing inslot that changes the pad down, unsteady isolating ring links to each other with driving disk, base respectively and makes and form an independent motion region between driving disk, the base.

2. An oil-free scroll type automobile brake vacuum booster pump as claimed in claim 1, wherein: the floating isolation ring comprises an elastic ring and an isolation ring, the elastic ring is installed on the movable disc, and the upper end and the lower end of the isolation ring are respectively connected with the elastic ring and the base.

3. An oil-free scroll type automobile brake vacuum booster pump as claimed in claim 2, wherein: the floating isolation ring is arranged between the autorotation prevention mechanism and the inner wall of the base.

4. An oil-free scroll type automobile brake vacuum booster pump as claimed in claim 1, wherein: the one-way check valve is a diaphragm one-way check valve.

5. An oil-free scroll type automobile brake vacuum booster pump as claimed in claim 1, wherein: the movable disc is made of high-molecular wear-resistant materials.

6. An oil-free scroll type automobile brake vacuum booster pump as claimed in claim 1, wherein: the eccentric driving device comprises an eccentric driving block, a motor and a bearing, the output end of the motor is connected with the eccentric driving block, and the upper end and the lower end of the bearing are respectively connected with the movable disc and the eccentric driving block.

7. An oil-free scroll type automobile brake vacuum booster pump as claimed in claim 6, wherein: the motor is connected with the bottom of the base through a connecting flange and a connecting bolt, and the connecting flange is connected with the static disc through a screw.

8. An oil-free scroll type automobile brake vacuum booster pump as claimed in claim 1, wherein: lubricating grease is coated on the surfaces of the upper anti-rotation pad and the lower anti-rotation pad.

9. An oil-free scroll type automobile brake vacuum booster pump as claimed in claim 1, wherein: the number of the autorotation preventing mechanisms is 3-8.

10. An oil-free scroll type automobile brake vacuum booster pump as claimed in any one of claims 1 to 9, wherein: the arc radius of the arc-shaped limiting groove is larger than the diameter of the ball.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of vacuum booster pumps, in particular to the technical field of an oil-free vortex type automobile brake vacuum booster pump.

[ background of the invention ]

The automobile brake vacuum booster pump can be used for an automobile booster brake system to pump vacuum and can also be used for other transport vehicles and engineering machinery. The vacuum power-assisted braking system can improve the braking feasibility and reduce the fatigue of a driver, is favorable for reducing the occurrence rate of driving accidents and improves the safety of the whole vehicle. The vehicle with gasoline engine has ignition engine, so that high vacuum pressure may be produced in the air inlet pipe to provide sufficient vacuum source for the vacuum boosting brake system.

When the vacuum booster pump works, a vacuum cavity is formed in the automobile brake vacuum booster pump, one part of the vacuum booster pump is communicated with the atmosphere, and the other part of the vacuum booster pump is connected with an air inlet pipe of an engine through a pipeline. The brake booster pump utilizes the principle that an engine sucks air when working to cause vacuum on one side of the booster, generates pressure difference relative to normal air pressure on the other side, and utilizes the pressure difference to strengthen brake thrust.

The automobile brake vacuum booster pump on the market at present comprises a blade type, a diaphragm type, a plunger type and a piston type. The piston type automobile brake vacuum booster pump has the problems that vibration is easy to occur in the working process, and the service life is short due to large friction coefficient; the plunger type automobile brake vacuum booster pump has large volume and is inconvenient for miniaturization; the vane type automobile brake vacuum booster pump has the problems of high noise and low water absorption prevention capacity.

[ summary of the invention ]

The invention aims to solve the problems in the prior art, and provides an oil-free vortex type automobile brake vacuum booster pump which can prevent reverse water absorption, effectively avoid brake failure, work stably, has a low friction coefficient and low noise and is long in service life.

In order to achieve the aim, the invention provides an oil-free vortex type automobile brake vacuum booster pump which comprises a base, a static disc, a movable disc, a floating isolating ring and an anti-rotation mechanism, the static disc is provided with an air outlet and an air inlet, the static disc and the movable disc are oppositely arranged, the movable disc is connected with the eccentric driving device and rotates along with the eccentric driving device, and the movable disc swings under the restraint of the autorotation preventing mechanism when rotating, the eccentric driving device is arranged on the base, the anti-rotation mechanism is respectively connected with the movable disc and the base, the exhaust port is provided with a one-way check valve, the anti-rotation mechanism comprises an upper anti-rotation pad, a lower anti-rotation pad and balls, the upper end and the lower end of each ball are respectively installed in arc-shaped limiting grooves arranged on the upper anti-rotation pad and the lower anti-rotation pad in a matching manner, the floating isolation ring is respectively connected with the movable disc and the base so that an independent movement area is formed between the movable disc and the base.

Preferably, the floating isolation ring comprises an elastic ring and an isolation ring, the elastic ring is installed on the movable disc, and the upper end and the lower end of the isolation ring are respectively connected with the elastic ring and the base.

Preferably, the floating isolation ring is arranged between the autorotation prevention mechanism and the inner wall of the base.

Preferably, the one-way check valve is a diaphragm-type one-way check valve.

Preferably, the movable plate is made of a high-molecular wear-resistant material.

Preferably, the eccentric driving device comprises an eccentric driving block, a motor and a bearing, the output end of the motor is connected with the eccentric driving block, and the upper end and the lower end of the bearing are respectively connected with the movable disc and the eccentric driving block.

Preferably, the motor is connected with the bottom of the base through a connecting flange and a connecting bolt, and the connecting flange is connected with the static disc through a screw.

Preferably, the surfaces of the upper and lower anti-rotation pads are coated with grease.

Preferably, the number of the rotation prevention mechanisms is 3 to 8.

Preferably, the arc radius of the arc-shaped limiting groove is larger than the diameter of the ball.

The invention has the beneficial effects that: according to the invention, the one-way check valve is arranged on the exhaust port, so that water is effectively prevented from being sucked backwards, and the failure of the controller is avoided; a plurality of groups of anti-rotation mechanisms which are uniformly distributed are arranged between the movable disc and the base, the upper end and the lower end of each ball are respectively installed in arc-shaped limiting grooves formed in the upper anti-rotation pad and the lower anti-rotation pad in a matched mode, the upper anti-rotation pads are installed in holes of the movable disc, and the lower anti-rotation pads are installed on the base, so that the friction coefficient of the balls in the rotation process is small, the noise in the working process is effectively reduced, and the service life is prolonged; the floating isolation ring is connected with the movable disc and the base respectively so that an independent movement area is formed between the movable disc and the base, the anti-rotation mechanism, the eccentric driving block and the bearing are enclosed in the movement area by the floating isolation ring, and the floating isolation ring comprises an elastic ring and an isolation ring, so that the safety and stability of a working environment are ensured, and the service life is prolonged; the oil-free vortex type automobile brake vacuum booster pump is simple in overall structure, convenient to disassemble, assemble and maintain, and good in sealing performance and wear resistance.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a schematic structural view of an oil-free vortex type automobile brake vacuum booster pump of the present invention;

FIG. 2 is a schematic diagram of the engagement of a movable disc and a stationary disc of the oil-free vortex type automobile brake vacuum booster pump.

In the figure: 1-base, 2-moving disk, 3-motor, 4-static disk, 5-lower anti-rotation pad, 6-ball, 7-upper anti-rotation pad, 8-isolating ring, 11-connecting flange, 31-eccentric driving block, 41-air inlet, 42-one-way check valve, 43-air outlet and 81-elastic ring.

[ detailed description ] embodiments

Referring to fig. 1 and 2, the invention relates to an oil-free vortex type automobile brake vacuum booster pump, which comprises a base 1, a static disc 4, a movable disc 2, a floating isolating ring and an anti-rotation mechanism, wherein the static disc 4 is provided with an air outlet 43 and an air inlet 41 which are communicated with the inner cavity of the static disc 4, the molded line of the movable disc 2 is inserted into the molded line of the static disc 4 when the static disc 4 and the movable disc 2 are oppositely meshed and mounted, the movable disc 2 is connected with an eccentric driving device and rotates along with the eccentric driving device, and the movable disc 2 swings under the constraint action of the anti-rotation mechanism when rotating, the eccentric driving device is mounted on the base 1, the anti-rotation mechanism is respectively connected with the movable disc 2 and the base 1, the air outlet 43 is provided with a one-way check valve 42, the anti-rotation mechanism comprises an upper anti-rotation pad 7, a lower anti-rotation pad 5 and a ball 6, the upper anti-rotation pad, the upper anti-rotation pad 7 is installed in a hole of the movable disc 2 in a matching mode, the lower anti-rotation pad 5 is connected with the base 1, the upper end and the lower end of the ball 6 are installed in arc-shaped limiting grooves in the upper anti-rotation pad 7 and the lower anti-rotation pad 5 in a matching mode respectively, the floating isolation ring is connected with the movable disc 2 and the base 1 respectively to enable an independent movement area to be formed between the movable disc 2 and the base 1, and the upper anti-rotation pad 7 and the lower anti-rotation pad 5 are parallel to each other;

the movable disc 2 is made of a high-molecular wear-resistant material, such as KN7051 silicon carbide high-molecular wear-resistant material, so that the friction coefficient is effectively reduced, and the movable disc 2 is positioned inside the base 1;

after the porcelain on the surface of the static disc 4 is oxidized, sealing treatment and antifriction treatment are carried out, so that the sealing system energy and the wear-resisting system energy of the static disc 4 are good, and the static disc 4 is formed by die-casting aluminum;

the floating isolation ring comprises an elastic ring 81 and an isolation ring 8, the elastic ring 81 is arranged on the movable disc 2, and the upper end and the lower end of the isolation ring 8 are respectively connected with the elastic ring 81 and the base 1;

the floating isolation ring is arranged between the upper anti-rotation pad 7 and the inner wall of the base 1, an independent movement area is formed among the floating isolation ring, the movable disc 2 and the base 1, and the hardness of the upper anti-rotation pad 7 and the lower anti-rotation pad 5 is 40-65 HRC;

the one-way check valve 42 is a diaphragm one-way check valve;

the ball 6 is a spherical steel ball, and the upper end and the lower end of the steel ball are restrained by two corresponding arc-shaped limiting grooves;

the eccentric driving device comprises an eccentric driving block 31, a motor 3 and a bearing, wherein the output end of the motor 3 is connected with the eccentric driving block 31, the upper end and the lower end of the bearing are respectively connected with the movable disc 2 and the eccentric driving block 31, and the floating isolation ring encloses the anti-rotation mechanism, the eccentric driving block 31 and the bearing in the motion area, so that the anti-rotation mechanism and the bearing are isolated from the base 1;

the motor 3 is connected with the bottom of the base 1 through a connecting flange 11 and a connecting bolt, and the connecting flange 11 is connected with the static disc 4 through a screw;

the number of the anti-rotation mechanisms is 3-8, the anti-rotation mechanisms are uniformly distributed, lubricating grease is coated on the surfaces of the upper anti-rotation pad 7 and the lower anti-rotation pad 5, the surface roughness of the upper anti-rotation pad 7 and the surface roughness of the lower anti-rotation pad 5 are Ra0.2-6.2, and friction in the rolling process of the ball 6 is reduced;

the circular arc radius of arc spacing groove is greater than the diameter of ball 6, and the diameter of ball 6 is 3 ~ 15mm, and the circular arc radius of arc spacing groove surpasss ball 6 diameter 0.1 ~ 0.5 millimeter.

The working process of the invention is as follows:

in the working process of the oil-free vortex type automobile brake vacuum booster pump, gas enters the static disc 4 from the gas inlet 41, the motor 3 is started, the motor 3 rotates to drive the eccentric driving block 31 to rotate, the eccentric driving block 31 rotates to enable the movable disc 2 to start rotating, the movable disc 2 swings along the inner axis of the static disc 4 while rotating due to the fact that the balls 6 are restrained by the anti-rotating pads 7 and the lower anti-rotating pads 5, certain pressure is generated between the movable disc 2 and the static disc 4 due to the fact that the gap between the movable disc 2 and the static disc 4 changes in the swinging process, and finally the gas in the static disc 4 is compressed and then discharged from the gas outlet 43, wherein the diaphragm type one-way check valve can prevent moisture from being sucked backwards.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.