CN220227596U - Electric control clutch booster with gear shifting control valve - Google Patents

Abstract

The utility model relates to the technical field of clutch boosters, in particular to an electric control clutch booster with a gear shifting control valve, which comprises a booster body, wherein the booster body comprises a cylinder body at the front end, a piston is arranged in the cylinder body, a push rod is connected to the piston, and the far end of the push rod penetrates out from a yielding hole arranged at the front end of the cylinder body to form an operation end; the piston divides the interior of the cylinder body into a front cavity at the front side of the piston and a rear cavity at the rear side of the piston; the cylinder body is provided with a front air inlet channel and is communicated with the front cavity; the cylinder body is also provided with an air inlet hole and an air return hole which are respectively communicated with the rear cavity; the clutch booster has the characteristics of simpler and more reasonable structural design, better control of compressed air entering or exiting the clutch booster cylinder, and better realization of automatic separation and combination of the clutch.

Description

Electric control clutch booster with gear shifting control valve

Technical Field

The utility model relates to the technical field of clutch boosters, in particular to an electric control clutch booster with a gear shifting control valve.

Background

In order to reduce the labor intensity of a driver for operating the clutch and ensure the driving safety, a clutch booster is commonly used on small and medium-sized automobiles at present. The automobile clutch booster is a key component for ensuring the safety of an automobile, when a clutch pedal is pressed down, hydraulic oil pressed out of a clutch master cylinder enters an oil cylinder of the booster through an oil pipe, and a compressed air source of a vehicle is used for providing booster for the clutch, but the clutch control mode in the prior art is single, and quick and accurate separation and combination cannot be realized, so that certain potential safety hazards exist.

At present, a clutch booster of a commercial vehicle mainly acts through two media of brake fluid and compressed air together: by pressing the clutch pedal, brake fluid in the clutch master cylinder is pushed into the clutch booster, so that the brake fluid generates hydraulic pressure, then the valve of the clutch booster is opened by the hydraulic pressure, and compressed air enters the clutch booster through the valve to boost and separate the clutch. The failure rate of the clutch booster in the working mode is generally high in the market, and the driving comfort of a driver is seriously affected. The maintenance of the product is difficult, and the used brake fluid also causes environmental pollution.

Currently, in the prior art, the utility model patent with the application number (2019206985895) discloses an automobile electric control automatic clutch booster, in the patent structure, displacement and speed of clutch separation and combination are controlled in real time by a motor or electromagnetic driving mode, so that automatic control precision and response speed are greatly improved, but the defect that the coil service life is greatly shortened because the state of opening or closing cannot be kept for a long time is also existed.

Therefore, how to provide an electric control clutch booster with a gear shifting control valve, which has a simpler and more reasonable structural design, can better control compressed air to enter or exit a clutch booster cylinder, and can better realize automatic separation and combination of a clutch, becomes a technical problem to be solved by the person skilled in the art.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present utility model is to provide an electric control clutch booster with a gear shift control valve, which has a simpler and more reasonable structural design, can better control compressed air to enter or exit a clutch booster cylinder, and can better realize automatic separation and combination of a clutch.

In order to achieve the above purpose, the utility model provides an electric control clutch booster with a gear shift control valve, which comprises a booster body, wherein the booster body comprises a cylinder body at the front end, a piston is arranged in the cylinder body, a push rod is connected to the piston, and the far end of the push rod penetrates out from a yielding hole at the front end of the cylinder body to form an operation end; the piston divides the interior of the cylinder body into a front cavity at the front side of the piston and a rear cavity at the rear side of the piston; the cylinder body is provided with a front air inlet channel and is communicated with the front cavity; the cylinder body is also provided with an air inlet hole and an air return hole which are respectively communicated with the rear cavity; the booster body further comprises a shell at the rear end, and the inner cavity of the shell is communicated with the front air inlet channel; the shell is provided with a rear air inlet channel and a rear air return channel, and the front ends of the rear air inlet channel and the rear air return channel are respectively communicated with the air inlet hole and the air return hole correspondingly; and an air inlet control electromagnetic valve and an air return control electromagnetic valve are respectively arranged corresponding to the rear air inlet channel and the rear air return channel; the shell is provided with an air inlet, an air outlet and an air return outlet; and the rear end of the rear air return channel is communicated with the air return outlet; the shell is also provided with a two-position three-way valve, and two control positions of the two-position three-way valve can respectively communicate the air inlet with the rear air inlet channel and communicate the air inlet with the air outlet.

Further, an exhaust valve assembly is arranged on the exhaust port.

Thus, when the electric control clutch booster with the gear shifting control valve works, gas enters from the gas inlet, the two control positions of the two-position three-way valve arranged on the shell can respectively communicate the gas inlet with the rear gas inlet channel and communicate the gas inlet with the gas outlet, when one of the two-position three-way valve is in control, the gas inlet is communicated with the gas outlet, and the gas is directly discharged to the outside, so that no action is executed at the moment; when the two-position three-way valve is under the control of the other control, the air inlet is communicated with the rear air inlet channel on the shell, and at the moment, the air inlet control electromagnetic valve is opened, so that air can enter the rear cavity and push the piston to move forwards, and the piston drives the push rod to move forwards and complete work. Meanwhile, the gas in the front cavity sequentially passes through the front air inlet channel and the air return hole, enters the inner cavity of the shell and can be discharged from the air outlet on the shell. Then, the air inlet control electromagnetic valve is closed, the air return control electromagnetic valve is opened, the air inlet continuously enters the inner cavity of the shell, air enters the front cavity from the air inlet hole and passes through the front air inlet channel, the piston is pushed to move backwards, the piston drives the push rod to move backwards, and meanwhile, the air in the rear cavity passes through the air return hole and the rear air return channel and is discharged to the outside from the air return outlet.

The structure has the characteristic of automatically controlling compressed air to enter or exit the clutch booster cylinder under the condition of not using brake fluid and operating the clutch pedal by a driver so as to realize the automatic separation and combination of the clutch.

Further, an exhaust nozzle is arranged on the shell, and an air inlet and outlet end of the exhaust nozzle is communicated with the rear air return channel. This is more convenient for exhausting.

As optimization, a front air inlet convex edge which is axially arranged and protrudes outwards is arranged on the peripheral wall of the cylinder body; the front air inlet channel comprises a front air inlet through hole which is arranged on the front air inlet convex edge and is axially arranged, and the front end of the front air inlet through hole is communicated with the front cavity; the end wall of the rear end of the cylinder body is provided with a front air inlet connecting hole which is radially arranged, the outer end of the front air inlet connecting hole is communicated with the front air inlet through hole, and the inner end of the front air inlet connecting hole is communicated with the inside of the shell.

Therefore, the structural design of the cylinder body is more reasonable, and the front air inlet through hole can be better machined on the cylinder body. And the structural design of the whole front air inlet channel is more reasonable, and the distance is shorter.

As optimization, three connecting holes are arranged on the end face of the rear end in the cylinder body in a triangular shape, connecting screws are respectively arranged in the connecting holes, and the threaded ends of the connecting screws respectively penetrate through the connecting holes and are respectively and correspondingly connected with threaded holes arranged on the inner side face of the shell; and a sealing ring is arranged on the inner side of the screw head of the connecting screw.

Therefore, the shell and the cylinder body are more convenient to connect and fix, the shell and the cylinder body are mutually independent, and can be respectively manufactured and reassembled, so that the structural design is more reasonable.

As optimization, the piston comprises a piston body at the front end and a piston rod connected to the rear end of the piston body; a spiral spring is sleeved on the piston rod, and two ends of the spiral spring are respectively supported at the rear end of the piston body and the rear end of the cylinder body in an abutting mode; the piston rod extends backwards and penetrates out from a through hole formed in the rear end of the cylinder body to the outside, a positioning convex rod which is arranged in a backwards protruding mode is arranged in the shell, a positioning hole which is in a blind hole structure design is formed in the positioning convex rod, and the piston rod penetrates out from the through hole formed in the rear end of the cylinder body and then stretches into the positioning hole; a sealing ring is arranged between the mounting hole and the rear end face of the cylinder body; an induction magnet is arranged on the piston rod, and a Hall sensor is arranged on the shell.

Thus, the structural design of the piston is simpler and more reasonable; and adopt the mutual cooperation work of induction magnet and hall sensor that set up on the piston rod, the position of piston in the cylinder body is judged in the response that can be better, and the work is more reliable. And through setting up the settling convex rod in the casing inside for after the piston rod extends backward and wears out from the through-hole of cylinder body rear end, stretch into the settling hole that is equipped with on settling convex rod again, make piston rod and cylinder body and the hole cooperation on the casing, improve the moving accuracy of piston rod, better avoid it to produce in radial direction and lie in, thereby more accurate position and the distance that obtains its axial displacement.

As optimization, the inner side and the outer side of the rear end of the cylinder body, which correspond to the positions of the through holes, are respectively arranged in an inward and outward protruding way, so that a mounting cylinder with a cylindrical structural design is integrally formed, and the sealing ring is arranged between the end face of the outer end of the mounting cylinder and the shell; the inner peripheral wall of the inner end of the mounting cylinder is provided with a mounting groove and a sealing ring.

Like this, through being provided with the mounting cylinder on the cylinder body integrated into one piece, make things convenient for sealing between piston rod and the cylinder body more to make things convenient for the casing installation to set up on the cylinder body more.

As optimization, the end face of the outer end of the piston rod is provided with a mounting hole, and the induction magnet comprises a first magnetic steel, a permanent magnet and a second magnetic steel which are sequentially inserted and mounted from inside to outside in the mounting hole; the outer end of the mounting hole is also provided with a retainer ring which is integrally in an annular structural design, and the retainer ring is supported at the outer end of the second magnetic steel in a mutually attached mode so as to limit the second magnetic steel from falling out of the outer end of the mounting hole.

Thus, the installation and arrangement of the induction magnets are more convenient. And the induction magnet is composed of the first magnetic steel, the permanent magnet and the second magnetic steel, so that the cost can be reduced.

As optimization, the piston body and the piston rod are integrally formed; a cushion block mounting hole is formed in the middle of the front end surface of the piston body, a cushion block is correspondingly arranged on the middle of the front end surface of the piston body, a connecting ball head is arranged at the end part of the push rod, and the outer side surface of the cushion block is a concave spherical surface and can be in butt joint with the inner side of the connecting ball head for supporting; and a telescopic dust cover is sleeved outside the push rod.

Like this, with piston body and piston rod as integrated into one piece obtain, the wholeness is better for the position accuracy between the two is higher. And be provided with the cushion through being provided with cushion dress hole and the installation that corresponds at piston body front end surface middle part and be provided with the cushion for push rod butt cooperation is on the sphere that the cushion outside surface is the indent, and the cooperation area is bigger, better protects the piston body.

As optimization, two connecting posts are arranged on the outer side face of one end of the shell body, which is adjacent to the cylinder body, and the hall sensors are fixed on the two connecting posts arranged in pairs through screw connection.

Therefore, the Hall sensor is arranged by arranging the two connecting columns and installing the Hall sensor, so that the Hall sensor is more conveniently installed and arranged.

As optimization, the outer circumferential surfaces of the two ends of the piston body are respectively provided with an annular mounting groove and a sealing ring; an annular assembly groove is arranged between the two mounting grooves on the piston body, and a Y-shaped sealing ring is arranged in the assembly groove.

Like this, through set up sealing washer and Y shape sealing washer on the piston body for the seal between piston body and the cylinder body is more reliable.

As optimization, the cylinder body comprises a cylinder body shell which is integrally designed in a barrel-shaped structure and is designed with an open front end, and a cylinder body cover body is fixedly connected with the open end of the cylinder body shell; the open end of the cylinder body shell is provided with a circle of connecting disc formed by bending vertically outwards, and the cylinder body cover body is detachably connected and fixed on the connecting disc through a fixing screw; and mounting connection holes are further formed in the four corner positions of the cylinder body cover body, and penetrate through the connecting disc.

Therefore, the structural design of the cylinder body is simpler and more reasonable, and the cylinder body is more convenient to process and manufacture.

As an optimization, a sealing ring is arranged between the connecting disc and the cylinder body cover body.

Thus, the sealing ring is arranged between the connecting disc and the cylinder body cover body, so that air leakage between the connecting disc and the cylinder body cover body can be better avoided.

As the optimization, the casing is including wholly being box body structural design and the open shell body in one side, is fixed with the cap at the open end installation of shell body, and the cap inboard has two installation lugs that are the interval arrangement, is equipped with first installation mating hole and second installation mating hole at installation lug medial surface both ends respectively in pairs, and is equipped with respectively at first installation mating hole and the second installation mating hole in pairs inlet control solenoid valve and return air control solenoid valve.

Thus, the structural design of the shell is simpler, and the air inlet control electromagnetic valve and the air return control electromagnetic valve are more convenient to install and set.

As optimization, the exhaust port is arranged at the center of one side surface of the shell; the air inlet, the air outlet and the two-position three-way valve are all arranged on the end face of the far end of the shell.

Thus, the arrangement of the air outlet, the air inlet, the air outlet and the two-position three-way valve is more reasonable.

Drawings

Fig. 1 is a schematic diagram of an electrically controlled clutch booster with a shift control valve in an embodiment of the present utility model.

Fig. 2 is a schematic view of the structure of fig. 1 rotated by a certain angle.

Fig. 3 is a schematic view of the structure of fig. 1 with the housing and two-position three-way valve omitted.

Fig. 4 is a schematic view of the structure of fig. 1 with the cover omitted.

Fig. 5 is an end view schematic of fig. 1.

Fig. 6 is a schematic cross-sectional view A-A of fig. 5.

Fig. 7 is a schematic cross-sectional view of B-B of fig. 5.

Fig. 8 is a partially enlarged schematic view of the C position in fig. 7.

Fig. 9 is a partially enlarged schematic view of the D position in fig. 7.

Fig. 10 is a side view schematic of fig. 1.

FIG. 11 is a schematic sectional E-E view of FIG. 10.

Fig. 12 is a schematic cross-sectional view of the two-position three-way valve of fig. 1.

Fig. 13 is a partially enlarged schematic view of the F position in fig. 12.

Fig. 14 is a schematic view of the valve stem of fig. 12.

Detailed Description

The present utility model will be further described with reference to the drawings and examples, and it should be noted that in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific manner, and thus should not be construed as limiting the present utility model. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 and 14, an electric control clutch booster with a gear shift control valve comprises a booster body, wherein the booster body comprises a cylinder body 1 at the front end, a piston 2 is arranged in the cylinder body, a push rod 3 is connected to the piston, and the far end of the push rod penetrates out from a yielding hole at the front end of the cylinder body to the outside to form an operation end; the piston divides the interior of the cylinder body into a front cavity 4 at the front side of the piston and a rear cavity 5 at the rear side of the piston; the cylinder body is provided with a front air inlet channel 6 and is communicated with the front cavity; the cylinder body is also provided with an air inlet hole 7 and an air return hole 8 which are respectively communicated with the rear cavity; the booster body also comprises a shell 9 at the rear end, and the inner cavity of the shell is communicated with the front air inlet channel; the shell is provided with a rear air inlet channel and a rear air return channel, and the front ends of the rear air inlet channel and the rear air return channel are respectively communicated with the air inlet hole and the air return hole correspondingly; and an air inlet control electromagnetic valve 10 and an air return control electromagnetic valve 11 are respectively arranged corresponding to the rear air inlet channel and the rear air return channel; the shell is provided with an air inlet 12, an air outlet 13, an air outlet 14 and an air return outlet 15; and the rear end of the rear air return channel is communicated with the air return outlet; a two-position three-way valve 16 is also provided on the housing and enables two control positions of the two-position three-way valve to communicate the air inlet with the rear air inlet passage and the air inlet with the air outlet, respectively.

Further, an exhaust valve assembly is arranged on the exhaust port.

Thus, when the electric control clutch booster with the gear shifting control valve works, gas enters from the gas inlet, the two control positions of the two-position three-way valve arranged on the shell can respectively communicate the gas inlet with the rear gas inlet channel and communicate the gas inlet with the gas outlet, when one of the two-position three-way valve is in control, the gas inlet is communicated with the gas outlet, and the gas is directly discharged to the outside, so that no action is executed at the moment; when the two-position three-way valve is under the control of the other control, the air inlet is communicated with the rear air inlet channel on the shell, and at the moment, the air inlet control electromagnetic valve is opened, so that air can enter the rear cavity and push the piston to move forwards, and the piston drives the push rod to move forwards and complete work. Meanwhile, the gas in the front cavity sequentially passes through the front air inlet channel and the air return hole, enters the inner cavity of the shell and can be discharged from the air outlet on the shell. Then, the air inlet control electromagnetic valve is closed, the air return control electromagnetic valve is opened, the air inlet continuously enters the inner cavity of the shell, air enters the front cavity from the air inlet hole and passes through the front air inlet channel, the piston is pushed to move backwards, the piston drives the push rod to move backwards, and meanwhile, the air in the rear cavity passes through the air return hole and the rear air return channel and is discharged to the outside from the air return outlet.

The structure has the characteristic of automatically controlling compressed air to enter or exit the clutch booster cylinder under the condition of not using brake fluid and operating the clutch pedal by a driver so as to realize the automatic separation and combination of the clutch.

Further, an exhaust nozzle 17 is further installed on the shell, and an air inlet and outlet end of the exhaust nozzle is communicated with the rear air return channel. This is more convenient for exhausting.

In the present embodiment, a front air inlet convex edge 18 which is axially arranged and protrudes outwards is arranged on the peripheral wall of the cylinder body; the front air inlet channel comprises a front air inlet through hole 19 which is arranged on the front air inlet convex edge and is axially arranged, and the front end of the front air inlet through hole is communicated with the front cavity; the end wall of the rear end of the cylinder body is provided with a front air inlet connecting hole 20 which is radially arranged, the outer end of the front air inlet connecting hole is communicated with the front air inlet through hole, and the inner end of the front air inlet connecting hole is communicated with the inside of the shell.

Therefore, the structural design of the cylinder body is more reasonable, and the front air inlet through hole can be better machined on the cylinder body. And the structural design of the whole front air inlet channel is more reasonable, and the distance is shorter.

In the specific embodiment, three connecting holes are arranged on the end face of the rear end inside the cylinder body in a triangular mode, connecting screws 21 are respectively arranged in the connecting holes, and threaded ends of the connecting screws respectively penetrate through the connecting holes and are respectively and correspondingly connected with threaded holes arranged on the inner side face of the shell; and a sealing ring is arranged on the inner side of the screw head of the connecting screw.

Therefore, the shell and the cylinder body are more convenient to connect and fix, the shell and the cylinder body are mutually independent, and can be respectively manufactured and reassembled, so that the structural design is more reasonable.

In this embodiment, the piston comprises a piston body 22 at the front end and a piston rod 23 connected to the rear end of the piston body; a spiral spring 24 is sleeved on the piston rod, and two ends of the spiral spring are respectively supported at the rear end of the piston body and the rear end of the cylinder body in an abutting mode; the piston rod extends backwards and penetrates out from a through hole formed in the rear end of the cylinder body to the outside, a positioning convex rod 25 protruding backwards is arranged in the shell, a positioning hole with a blind hole structural design is formed in the positioning convex rod, and the piston rod penetrates out from the through hole formed in the rear end of the cylinder body and then stretches into the positioning hole; a sealing ring is arranged between the mounting hole and the rear end face of the cylinder body; an induction magnet 26 is provided on the piston rod, and a hall sensor 27 is provided on the housing.

Thus, the structural design of the piston is simpler and more reasonable; and adopt the mutual cooperation work of induction magnet and hall sensor that set up on the piston rod, the position of piston in the cylinder body is judged in the response that can be better, and the work is more reliable. And through setting up the settling convex rod in the casing inside for after the piston rod extends backward and wears out from the through-hole of cylinder body rear end, stretch into the settling hole that is equipped with on settling convex rod again, make piston rod and cylinder body and the hole cooperation on the casing, improve the moving accuracy of piston rod, better avoid it to produce in radial direction and lie in, thereby more accurate position and the distance that obtains its axial displacement.

In the specific embodiment, the inner side and the outer side of the rear end of the cylinder body, which correspond to the positions of the through holes, are respectively arranged in an inward and outward protruding way so as to integrally form a mounting cylinder 28 with a cylindrical structure, and the sealing ring is arranged between the end face of the outer end of the mounting cylinder and the shell; the inner peripheral wall of the inner end of the mounting cylinder is provided with a mounting groove and a sealing ring.

Like this, through being provided with the mounting cylinder on the cylinder body integrated into one piece, make things convenient for sealing between piston rod and the cylinder body more to make things convenient for the casing installation to set up on the cylinder body more.

In the specific embodiment, a mounting hole is formed in the end face of the outer end of the piston rod, and the induction magnet comprises a first magnetic steel 29, a permanent magnet 30 and a second magnetic steel 31 which are sequentially inserted and mounted from inside to outside in the mounting hole; the outer end of the mounting hole is also provided with a retainer ring which is integrally in an annular structural design, and the retainer ring is supported at the outer end of the second magnetic steel in a mutually attached mode so as to limit the second magnetic steel from falling out of the outer end of the mounting hole.

Thus, the installation and arrangement of the induction magnets are more convenient. And the induction magnet is composed of the first magnetic steel, the permanent magnet and the second magnetic steel, so that the cost can be reduced.

In the specific embodiment, the piston body and the piston rod are integrally formed; a cushion block mounting hole is formed in the middle of the front end surface of the piston body, a cushion block 32 is correspondingly arranged on the middle of the front end surface of the piston body, a connecting ball head 33 is arranged at the end part of the push rod, and the outer side surface of the cushion block is a concave spherical surface and can be in butt joint with the inner side of the connecting ball head for supporting; and a telescopic dust cover is sleeved outside the push rod.

Like this, with piston body and piston rod as integrated into one piece obtain, the wholeness is better for the position accuracy between the two is higher. And be provided with the cushion through being provided with cushion dress hole and the installation that corresponds at piston body front end surface middle part and be provided with the cushion for push rod butt cooperation is on the sphere that the cushion outside surface is the indent, and the cooperation area is bigger, better protects the piston body.

In this embodiment, two connecting posts 34 are disposed on the outer side surface of one end of the housing adjacent to the cylinder, and the hall sensors are fixed to the two connecting posts disposed in pairs by screw connection.

Therefore, the Hall sensor is arranged by arranging the two connecting columns and installing the Hall sensor, so that the Hall sensor is more conveniently installed and arranged.

In the specific embodiment, annular mounting grooves are respectively formed in the outer circumferential surfaces of the two ends of the piston body, and sealing rings 35 are arranged in the mounting grooves; an annular assembly groove is arranged between the two mounting grooves on the piston body, and a Y-shaped sealing ring 36 is arranged in the assembly groove.

Like this, through set up sealing washer and Y shape sealing washer on the piston body for the seal between piston body and the cylinder body is more reliable.

In the specific embodiment, the cylinder body comprises a cylinder body shell 37 which is integrally in a barrel-shaped structural design and is provided with an open front end, and a cylinder body cover 38 is fixedly connected to the open front end of the cylinder body shell; the open end of the cylinder body shell is provided with a circle of connecting disc 39 which is formed by bending outwards perpendicularly, and the cylinder body cover body is detachably connected and fixed on the connecting disc through a fixing screw; and mounting connection holes 40 are further formed in the four corner positions of the cylinder body cover body, and penetrate through the connecting disc.

Therefore, the structural design of the cylinder body is simpler and more reasonable, and the cylinder body is more convenient to process and manufacture.

In this embodiment, a seal ring is provided between the connecting disc and the cylinder cover.

Thus, the sealing ring is arranged between the connecting disc and the cylinder body cover body, so that air leakage between the connecting disc and the cylinder body cover body can be better avoided.

In this embodiment, the casing is including wholly being box body structural design and one side open shell body 41, installs at the open end of shell body and is fixed with cap 42, and the cap inboard has two installation lugs that are the interval arrangement, is equipped with first installation mating hole and second installation mating hole in pairs respectively at installation lug medial surface both ends, and is equipped with respectively at first installation mating hole in pairs and second installation mating hole inlet control solenoid valve and return air control solenoid valve.

Thus, the structural design of the shell is simpler, and the air inlet control electromagnetic valve and the air return control electromagnetic valve are more convenient to install and set.

In this embodiment, the exhaust port is disposed at a center position of a surface of one side of the housing; the air inlet, the air outlet and the two-position three-way valve are all arranged on the end face of the far end of the shell.

Thus, the arrangement of the air outlet, the air inlet, the air outlet and the two-position three-way valve is more reasonable.

As shown in fig. 12, 13 and 14, in this embodiment, the two-position three-way valve includes a valve body 43; the valve body is provided with an installation cavity, and a valve core is arranged in the installation cavity; the valve core comprises a solenoid valve core bar 44, a placement hole with a blind hole structure design is arranged on the front end face of the solenoid valve core bar, and a valve rod 45 is arranged in the placement hole; the bottom surface of the blind hole is provided with a communication hole 46 which axially penetrates through the blind hole, and the outer end of the communication hole is communicated with a rear air inlet channel on the shell through a communication air passage 47 arranged on the valve body; a connecting hole 48 is arranged on the end face of the inner end of the mounting cavity, and the upper end and the lower end of the connecting hole are respectively communicated with an air inlet and an air outlet on the shell through a first channel 49 and a second channel 50 which are arranged on the valve body; a spring thrust structure is arranged on the valve rod so that the valve rod can move inwards and is abutted against the inner end of the connecting hole to form a seal, and the outer end of the valve rod and the inner end of the communication hole are arranged at intervals; the valve body is provided with an electric plug 51, the electric plug is electrically connected with the solenoid valve core rod, and after the solenoid valve core rod is electrified, the valve rod overcomes the thrust of the spring thrust structure and moves towards the solenoid valve core rod, so that the outer end of the valve rod forms a seal with the inner end of the communication hole.

Therefore, when the two-position three-way valve works, after the electromagnetic valve core rod is electrified, the valve rod can overcome the thrust of the spring thrust structure and move towards the electromagnetic valve core rod, so that the outer end of the valve rod forms a seal with the inner end of the communication hole, and at the moment, the air inlet is filled with air and is discharged from the air outlet after passing through the connecting hole. When the electromagnetic valve core rod is powered off, the spring thrust structure can push the valve rod to move inwards and abut against the inner end of the connecting hole to form a seal, and the outer end of the valve rod and the inner end of the communication hole are arranged at intervals; the air inlet air passes through the space between the valve rod and the blind hole and passes through the communication hole, then enters the communication air passage on the valve body, and finally enters the rear air inlet passage on the shell. The two-position three-way valve has the characteristics of simpler structural design and better realization of two-position three-way.

In this embodiment, a first blind mounting hole is formed in the inner end of the electromagnetic valve rod, and a first seal cushion block 52 is disposed in the first blind mounting hole.

Thus, by designing the first seal cushion block, the reliability of sealing can be improved.

In this embodiment, the middle part of the inner end surface of the mounting cavity is provided with a convex matching protrusion 53, and the middle part of the matching protrusion is provided with the connecting hole.

Like this, through the cooperation arch of design for the first sealed cushion can be better accomplish sealedly with the protruding butt of cooperation, better improvement sealed effect.

In this embodiment, a second blind hole is disposed at the outer end of the electromagnetic valve rod, and a second sealing cushion block 54 is disposed in the second blind hole.

Thus, by designing the second seal cushion block, the reliability of the seal can be improved.

In this embodiment, a circle of relief annular grooves 55 are provided on the bottom surface of the blind hole and outside the corresponding communication holes.

In this way, a circle of relief annular grooves are designed, so that the second sealing cushion block can form a seal on the communication hole.

In this embodiment, the power receiving plug is installed and arranged on one surface of the valve body in the circumferential direction.

Thus, the position design of the power plug is more reasonable.

In this embodiment, the valve body includes a valve body 56, and a valve body rear cover 57 is disposed at an outer end of the valve body; a rectangular block formed by protruding outwards is arranged at a position opposite to the inner end of the valve body on the shell and forms a valve body front cover 58; the four corner positions of the valve body rear cover are respectively provided with a first through hole, the first through holes are respectively internally provided with a connecting screw, and the connecting screws respectively penetrate through the second through holes on the valve body and are in threaded connection with the connecting threaded holes on the valve body front cover; and sealing rings are respectively arranged between the valve body and the valve body rear cover and between the valve body and the valve body front cover.

Therefore, the structural design of the valve body is simpler and more reasonable, and the valve body is more convenient to process and manufacture.

In this embodiment, the electromagnetic valve core rod includes a core rod rear section 59 and a core rod front section 60, and the diameter of the core rod rear section is smaller than that of the core rod front section; the mounting cavity comprises a mounting cavity rear section arranged on the valve body and a mounting cavity front section arranged on the valve body front cover; the diameter of the rear section of the installation cavity is smaller than that of the front section of the installation cavity; the valve core rod rear section and the valve core rod front section are respectively correspondingly arranged and matched in the mounting cavity rear section and the mounting cavity front section; and a sealing ring mounting groove and a sealing ring are arranged on the outer circumferential surface of the front section of the valve core rod.

Therefore, the structural design of the electromagnetic valve core rod and the installation cavity is more reasonable, and the electromagnetic valve core rod and the installation cavity can be more conveniently sealed. And the rear section of the installation cavity is arranged on the valve body, and the front section of the installation cavity is arranged on the valve body front cover, so that the processing and the manufacturing are more convenient.

In this embodiment, the spring thrust structure includes a coil spring 61 sleeved on the inner end of the valve rod; the whole frustum-shaped structural design that is of coil spring, and make coil spring's one end butt in the spacing protruding edge inboard that the valve pole inner was had, coil spring's the other end butt support is on the butt step face that the blind hole inner peripheral wall had.

Thus, the spring thrust structure is simpler and more convenient to install and arrange.

In this embodiment, through grooves 62 which are not arranged in the axial direction are provided on the outer peripheral surface of the valve rod, and the through grooves are two arranged in a pair.

Thus, the through groove is formed, and when the electromagnetic valve core rod is powered off, the air inlet is used for air inlet, can pass through the through groove and enters the communication hole. The structural design is simpler and more reasonable.

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims (10)

1. An electric control clutch booster with a gear shifting control valve comprises a booster body, wherein the booster body comprises a cylinder body at the front end, a piston is arranged in the cylinder body, and a push rod is connected to the piston; the piston divides the interior of the cylinder body into a front cavity at the front side of the piston and a rear cavity at the rear side of the piston; the cylinder body is provided with a front air inlet channel and is communicated with the front cavity; the cylinder body is also provided with an air inlet hole and an air return hole which are respectively communicated with the rear cavity; the booster is characterized in that the booster body also comprises a shell at the rear end, and the inner cavity of the shell is communicated with the front air inlet channel; the shell is provided with a rear air inlet channel and a rear air return channel, and the front ends of the rear air inlet channel and the rear air return channel are respectively communicated with the air inlet hole and the air return hole correspondingly; and an air inlet control electromagnetic valve and an air return control electromagnetic valve are respectively arranged corresponding to the rear air inlet channel and the rear air return channel; the shell is provided with an air inlet, an air outlet and an air return outlet; and the rear end of the rear air return channel is communicated with the air return outlet; the shell is also provided with a two-position three-way valve, and two control positions of the two-position three-way valve can respectively communicate the air inlet with the rear air inlet channel and communicate the air inlet with the air outlet.

2. An electrically controlled clutch booster with a shift control valve as defined in claim 1, wherein: the cylinder body outer peripheral wall is provided with a front air inlet convex edge which is axially arranged and protrudes outwards; the front air inlet channel comprises a front air inlet through hole which is arranged on the front air inlet convex edge and is axially arranged, and the front end of the front air inlet through hole is communicated with the front cavity; the end wall of the rear end of the cylinder body is provided with a front air inlet connecting hole which is radially arranged, the outer end of the front air inlet connecting hole is communicated with the front air inlet through hole, and the inner end of the front air inlet connecting hole is communicated with the inside of the shell.

3. An electrically controlled clutch booster with a shift control valve as defined in claim 1, wherein: three connecting holes are formed in the end face of the rear end in the cylinder body in a triangular mode, connecting screws are respectively arranged in the connecting holes, and threaded ends of the connecting screws respectively penetrate through the connecting holes and are respectively and correspondingly connected with threaded holes formed in the inner side face of the shell; and a sealing ring is arranged on the inner side of the screw head of the connecting screw.

4. An electrically controlled clutch booster with a shift control valve as defined in claim 1, wherein: the piston comprises a piston body at the front end and a piston rod connected to the rear end of the piston body; a spiral spring is sleeved on the piston rod, and two ends of the spiral spring are respectively supported at the rear end of the piston body and the rear end of the cylinder body in an abutting mode; the piston rod extends backwards and penetrates out from a through hole formed in the rear end of the cylinder body to the outside, a positioning convex rod which is arranged in a backwards protruding mode is arranged in the shell, a positioning hole which is in a blind hole structure design is formed in the positioning convex rod, and the piston rod penetrates out from the through hole formed in the rear end of the cylinder body and then stretches into the positioning hole; a sealing ring is arranged between the mounting hole and the rear end face of the cylinder body; an induction magnet is arranged on the piston rod, and a Hall sensor is arranged on the shell.

5. An electrically controlled clutch booster with a shift control valve as defined in claim 4, wherein: the inner side and the outer side of the rear end of the cylinder body, which correspond to the positions of the through holes, are respectively arranged in an inward and outward protruding way so as to integrally form a mounting cylinder with a cylindrical structural design, and the sealing ring is arranged between the end face of the outer end of the mounting cylinder and the shell; the inner peripheral wall of the inner end of the mounting cylinder is provided with a mounting groove and a sealing ring.

6. An electrically controlled clutch booster with a shift control valve as defined in claim 4, wherein: the end face of the outer end of the piston rod is provided with a mounting hole, and the induction magnet comprises a first magnetic steel, a permanent magnet and a second magnetic steel which are sequentially inserted and mounted from inside to outside in the mounting hole; the outer end of the mounting hole is also provided with a retainer ring which is integrally in an annular structural design, and the retainer ring is supported at the outer end of the second magnetic steel in a mutually attached mode so as to limit the second magnetic steel from falling out of the outer end of the mounting hole.

7. An electrically controlled clutch booster with a shift control valve as defined in claim 4, wherein: the piston body and the piston rod are integrally formed; a cushion block mounting hole is formed in the middle of the front end surface of the piston body, a cushion block is correspondingly arranged on the middle of the front end surface of the piston body, a connecting ball head is arranged at the end part of the push rod, and the outer side surface of the cushion block is a concave spherical surface and can be in butt joint with the inner side of the connecting ball head for supporting; and a telescopic dust cover is sleeved outside the push rod.

8. An electrically controlled clutch booster with a shift control valve as defined in claim 4, wherein: two connecting columns are arranged on the outer side face of one end of the shell body, which is adjacent to the cylinder body, and the Hall sensors are fixedly arranged on the two connecting columns in pairs through screw connection.

9. An electrically controlled clutch booster with a shift control valve as defined in claim 4, wherein: annular mounting grooves are respectively formed in the outer circumferential surfaces of the two ends of the piston body, and sealing rings are arranged in the mounting grooves; an annular assembly groove is arranged between the two mounting grooves on the piston body, and a Y-shaped sealing ring is arranged in the assembly groove.

10. An electrically controlled clutch booster with a shift control valve as defined in claim 1, wherein: the cylinder body comprises a cylinder body shell which is integrally designed in a barrel-shaped structure and is designed with an open front end, and a cylinder body cover body is fixedly connected to the open end of the cylinder body shell; the open end of the cylinder body shell is provided with a circle of connecting disc formed by bending vertically outwards, and the cylinder body cover body is detachably connected and fixed on the connecting disc through a fixing screw; and mounting connection holes are further formed in the four corner positions of the cylinder body cover body, and penetrate through the connecting disc.