CN102529933B - Braking air pump, manufacture method for same and control method for same - Google Patents

Abstract

The invention relates to an air pump device for a vehicular pneumatic braking system, in particular to an air pump, which is simple in structure, safe, reliable and capable of working under the accidental outage condition. The braking air pump comprises driving discs, air pump rotating shafts, first driving devices, second driving devices and electric control devices, wherein the driving discs are mounted on the air pump rotating shafts through bearings, and the second driving devices are fixedly connected with the air pump rotating shafts. When powered on, the electric control devices drive the first driving devices so that the second driving devices are separated from the driving discs; and when powered off, the electric control devices drive the first driving devices so that the second driving devices are connected with the driving discs. The braking air pump can be ensured to be in the working state and to brake when a vehicle is in accidental outage, thereby being safe and reliable. The invention further provides a manufacture method and a control method for the braking air pump.

Description

Brake compressor and manufacture method thereof and control method

Technical field

The present invention relates to a kind of vehicle brake compressor, particularly relate to a kind of brake compressor of magnetic clutch control work.The invention still further relates to manufacture method and the control method of above-mentioned brake compressor.

Background technology

At present, the electromagnetic fan clutch that automobile uses, is the rotating speed controlling fan according to the water temperature change of driving engine, thus makes automotive engine keep optimum regime in operational process.Particular by the coil controlled on electromagnetic core the electric or power-off adhesive that comes the adhesive dish in controlling magnet reaction plate or fan fixed disk and drive plate be separated, thus the rotating speed of fan in control fan fixed disk, reach and make fan with suitable rotating speed to the effect of engine cooling.

Existing electromagnetic fan clutch (for three-speed electromagnetic fan clutch) as shown in Figure 1, comprise main shaft 1 ', drive plate 2 ', electromagnetic core 3 ', exterior loop 4a ', interior loop 4b ', fan fixed disk 9 ', magnet fixed disc 10 ', submissile reed 12 ', little adhesive dish 13 ', big spring sheet 34 ', large adhesive dish 35 ' and safety guard 36 ', the drive plate 2 ' be wherein made up of permeability magnetic material is fixedly mounted on main shaft 1 ' by semi-round key 19 ', the side of drive plate 2 ' is provided with some groups of magnet isolation tanks 23 ', the inner chamber of drive plate 2 ' is provided with electromagnetic core 3 ', electromagnetic core 3 ' is arranged on main shaft 1 ' by bearing 5 ', in being respectively equipped with in electromagnetic core 3 ', exterior loop embedding groove, in, the magnetic conduction opening direction of exterior loop inserting slot is all identical with main shaft 1 ' axial direction and point to the side of drive plate 2 ', in, in being provided with flat winding respectively in exterior loop embedding groove, exterior loop 4b ', 4a ', fan fixed disk 9 ' and magnet fixed disc 10 ' are respectively by bearing 8 ', 11 ' is arranged on main shaft 1 ', wherein magnet fixed disc 10 ' is positioned at fan fixed disk 9 ' inner chamber, a side end face of magnet fixed disc 10 ' is uniformly distributed with several fixed orifices along the circumference be used for inlaying soft magnet 15 ', soft magnet 15 ' picks permanent magnet 14 ', fan fixed disk 9 ' is upper is inlaid with soft magnet 16 ' with on the corresponding end face of permanent magnet 14 ', the upper annular end face relative with interior loop 4b ' of magnet fixed disc 10 ' there is little adhesive dish 13 ' by submissile reed 12 ' support and connection, the upper annular end face relative with exterior loop 4a ' of fan fixed disk 9 ' there is large adhesive dish 35 ' by big spring sheet 34 ' support and connection, greatly, little adhesive dish 13 ', 35 ' all near the side of drive plate 2 ', gap is had with between the corresponding end face of drive plate 2 ', the circumferential position end face outside of fan fixed disk 9 ' is fixedly connected with safety guard 36 ', safety guard 36 ' offers locking hole, outside the circumferential position of drive plate 2 ', correspondence position that is upper and locking hole offers mating holes.

The specific works process of above-mentioned three-speed electromagnetic fan clutch is: when engine temperature not yet reaches lower set temperature value (being such as set to 82 DEG C) of three-speed electromagnetic fan clutch, inside and outside coil 4b ', 4a ' in electromagnetic core 3 ' be no power all, drive plate 2 ' can not little adhesive dish 13 ' on adhesive magnet fixed disc 10 ', also the large adhesive dish 35 ' in not adhesive fan fixed disk 9 ', fan fixed disk 9 ' is by bearing 8 ' free rotary, and magnet fixed disc 10 ' is by bearing 11 ' free rotary, when engine temperature reach lower set temperature value (82 DEG C) and lower than higher set temperature value (being such as set to 88 DEG C) time, interior loop 4b ' obtains electric, magnetic effect due to electromagnetic core 3 ' makes the little adhesive dish 13 ' of drive plate 2 ' adhesive, make little adhesive dish 13 ' and drive plate 2 ' synchronous rotary, little adhesive dish 13 ' drives magnet fixed disc 10 ' to rotate at full speed by submissile reed 12 ', be embedded in that the permanent magnet 14 ' of soft magnet 16 ' in magnet fixed disc 10 ' in fan fixed disk 9 ' is relative with the magnetic field that soft magnet 15 ' is formed to be rotated, cutting magnetic line, himself produces vortex flow, vortex flow produces new magnetic field, realize fan fixed disk 9 ' under the action of a magnetic force to flexibly connect middling speed with magnet fixed disc 10 ' and rotate, play the effect of preliminary radiating and cooling, when engine temperature is elevated to higher temperature setting value (88 DEG C), exterior loop 4b ' obtains electric, produce the suction-combining force, by the adhesive of large adhesive dish 35 ' on drive plate 2 ', large adhesive dish 35 ' is with drive plate 2 ' synchronous rotary, large adhesive dish 35 ' drives fan fixed disk 9 ' to rotate at full speed by big spring sheet 34 ', thus plays the effect of powerful cooling.

But, vehicle in the process of moving, if the unexpected power-off of electric power system catastrophic failure of electromagnetic fan clutch, then inside and outside coil 4b ', 4a ' act on inefficacy, now just not by control inside and outside coil 4b ', 4a ' energising power-off to the rotating speed controlling the fan blade in fan fixed disk 9 ' with to engine cooling.Certainly, usually have in the former project organization of electromagnetic fan clutch with the urgent lock bolt carried with car with the use of safety guard 36 ' and corresponding locking hole, mating holes, chaufeur can stop as early as possible after the electric power system of electromagnetic fan clutch breaks down, then urgent lock bolt is inserted in the locking hole on safety guard 36 ' and the mating holes on drive plate 2 ', to make fan fixed disk 9 ' and drive plate 2 ' synchronous rotary, fan is rotated at full speed to engine cooling.If chaufeur learns that electric power system breaks down when driving, use urgent lock bolt fan fixed disk 9 ' and drive plate 2 ' to be fixed after can stopping, make fan rotate cooling at full speed; But chaufeur often cannot guarantee to learn failure condition in the very first time, thus can not stop in time and adopt urgent lock bolt, and the urgent lock bolt of installation that stops also comparatively bothers; Even if chaufeur can learn electric power system fault in the very first time, but the road conditions of automobile real-world operation are complicated and changeable, under some specific run environment, chaufeur can not stop, or cannot stop at once take bolt-locking measure, engine high-temperature may be therefore caused to damage or even scrap, even therefore can cause traffic accident under serious conditions, consequence is hardly imaginable.In addition, as shown in Figure 1, when Engine Coolant Temperature is elevated to higher temperature setting value (88 DEG C), in order to meet: exterior loop 4a ' electric after electromagnetic core 3 ' can be made to have enough large magnetic, with the large adhesive dish 35 ' adhesive that will be fixedly connected with fan fixed disk 9 ' on drive plate 2 ', and fan fixed disk 9 ' and the synchronized rotation of drive plate 2 ' can be driven, driving engine is just needed to provide continuing power to exterior loop 4a ', so not only consume more electric energy, and add the loss of engine power, make the driving engine overload operation more being natively in the condition of high temperature, reduce the service life of driving engine.

At present, for the air pump device of brake and drive system for vehicle with tow, in vehicle travel process, utilize the energising of magnetic clutch or power-off to control the work of air pump, in air pump internal pressure lower than needed for brake system work time force value (such as 6-8 kilogram), the electric power system of magnetic clutch gives electricity, the suction-combining force of electromagnetic core is utilized to be connected driving the parts of air pump rotating shaft running with the belt pulley (belt pulley passes through driven by engine) of rotation, make air pump rotating shaft and belt pulley run-in synchronism, thus reach the object making air pump in running order; When air pump internal pressure meets or exceeds force value (such as 6-8 kilogram) needed for brake system work, the electric power system power-off of magnetic clutch, air pump rotating shaft is separated with belt pulley, and air pump quits work.But, if the electric power system running into magnetic clutch in vehicle travel process breaks down, sudden power-off, or there is other faults in magnetic clutch, the so now uncontrollable air pump work of magnetic clutch, the effect affecting air pump plays, and causes brake system cisco unity malfunction, and then a series of serious consequence may be brought, can not chaufeur safety control be given; Certainly, existing Some vehicles is also provided with the safeguard construction preventing air pump control system to lose efficacy, but the use of these safeguard constructions all needs to stop, and manually enable anti-failure structure, thus there is certain limitation.

Summary of the invention

In order to solve the problems of the technologies described above, the invention provides a kind of structure simple, safe and reliable, can prevent because magnetic clutch sudden failure in driving conditions causes the out-of-action safety type air pump device of air pump.

Another technical purpose of the present invention is to provide the above-mentioned manufacture method with the brake compressor of anti-fail safe device.

Another technical purpose of the present invention is to provide the above-mentioned control method with the brake compressor of anti-fail safe device.

A kind of brake compressor of the present invention, comprises drive plate; Air pump rotating shaft, described drive plate is arranged in air pump rotating shaft by bearing, also comprise the first driving device, second driving device and the first electrical controller, described second driving device is fixedly connected with described air pump rotating shaft, when described first electrical controller obtains electric, described first electrical controller drives described first driving device that described second driving device and described drive plate are separated; When the first electrical controller power-off, described first electrical controller drives described first driving device that described second driving device is engaged with described drive plate.

The invention difference from existing technology is: brake compressor of the present invention adds safety device on the basis of existing air pump, i.e. the first driving device and the second driving device, guarantee by control the first electrical controller electricly to control with power-off while whether air pump rotating shaft rotate, reach following effect: when automobile in the process of moving, during the electric power system catastrophic failure power-off of brake compressor with the first electrical controller, second driving device engages with drive plate, makes the power of drive plate by the first driving device; Second driving device is passed to air pump rotating shaft, air pump rotating shaft rotates, brake compressor is worked when power-off, transmission failure in first electrical controller accident power-off situation, ensure that air pump enters mode of operation when magnetic clutch lost efficacy, guarantee that brake system of car can normal brake application when accident power-off, use more safe and reliable.Further, the present invention is designed to: when the first electrical controller power-off, and drive plate by transmission of power to the second driving device, thus can need not expend the effect that too much electric energy just can reach transmission, has saved electric energy, has extended the life-span of electric power system and supply line.

A kind of brake compressor of the present invention, wherein said second driving device comprises transmission cylinder.Adopt transmission cylinder to carry out transmission, manufacture processing simple, transmission is effective, easy for installation.

A kind of brake compressor of the present invention, wherein said first driving device comprises at least one driver blade.Driver blade structure is adopted between drive plate and transmission cylinder, with enable drive plate and transmission cylinder by the first electrical controller electric with power-off to control driver blade, the object controlling transmission cylinder and be separated with the power of drive plate or combine is reached by the motion controlling driver blade, and adopt driver blade simple as the first driving device manufacture processing, cost is low, and transmission is effective; Adopt at least one driver blade, make to lose efficacy or the reduction of transmission effect once a driver blade in use, other driver blades can continue the effect playing transmission, have ensured the overall transmission effect of driver blade well.

A kind of brake compressor of the present invention, wherein the structure of the first drive sheet, the second drive cylinder and the first electrical controller and position relationship can adopt following two kinds of forms:

(1) a kind of brake compressor of the present invention, wherein said driver blade is three arc-like sheets, is provided with three groups of projections outside the circumferential position of described drive plate, described three driver blades by hinge in the complementary protuberance of described drive plate; Described transmission cylinder has the opposing end surface with described drive plate outside the circumferential position of described drive plate, has gap between the opposing end surface of described driver blade and described transmission cylinder; Described first electrical controller comprises the electromagnet assembly be made up of electromagnetic core and coil, and described electromagnet assembly is positioned at the inner chamber of the circumferential position place end face of described drive plate.Adopt three arc driver blades by hinge outside drive plate circumferential position, install simple, transmission is effective, manufactures easy; Certain interval position outside the circumferential position that transmission cylinder is located at drive plate, make driver blade when the coil is de-energized can compress transmission cylinder under centrifugal action, transmission is effective, and cost is low; And utilize centnifugal force instead of special supply power to reach the effect of transmission, save the energy.

(2) a kind of brake compressor of the present invention, wherein said driver blade is three arc-like sheets, is provided with three groups of projections inside the circumferential position of described drive plate, described three driver blades by hinge in the complementary protuberance of described drive plate; Described transmission cylinder has the opposing end surface with described drive plate inside the circumferential position of described drive plate, has gap between the opposing end surface of described driver blade and described transmission cylinder; The electromagnet assembly that described first electrical controller comprises permanent magnet and is made up of electromagnetic core and coil, described permanent magnet is positioned at the inner chamber of described transmission cylinder, and described electromagnet assembly is positioned at outside the circumferential position of described drive plate; When described coil obtains electric, the magnetic attraction of described electromagnetic core to described driver blade is greater than the magnetic attraction of described permanent magnet to described driver blade.Permanent magnet and electromagnet assembly is adopted jointly to control the motion of driver blade as the first electrical controller, and inside the circumferential position place end face correspondingly driver blade being arranged on drive plate on, it is the one distortion to structure in above-mentioned (1), this structure also can realize initiatively making coil blackout or in coil accident power-off situation, can by the first drive sheet and the second drive cylinder by the transmission of power of drive plate to air pump rotating shaft; And the permanent magnet in said structure utilizes self proper property play adhesive effect and need not expend the electric power provided specially, decreases power consumption, saved the energy.

A kind of brake compressor of the present invention, wherein said driver blade is fixedly connected with arcuate friction sheet with the opposing end surface place of described transmission cylinder.Adopt the structure connecting friction lining on driver blade, make the transmission effect of driver blade better, service life is longer.

The manufacture method of a kind of brake compressor of the present invention, comprises the following steps:

A () forms drive plate and air pump rotating shaft;

B () forms the first driving device;

C () forms the second driving device;

D () forms the first electrical controller;

E () installs described first electrical controller, be fixedly mounted in described air pump rotating shaft by described second driving device, installs described first driving device, is arranged in described air pump rotating shaft by described drive plate, makes by bearing:

When the first electrical controller obtains electric, described first electrical controller drives described first driving device that described second driving device and described drive plate are separated;

When the first electrical controller power-off, described first electrical controller drives described first driving device that described second driving device is engaged with described drive plate.

Above-mentioned manufacture method can comprise following two kinds of concrete modes:

(1) the first driving device in described step (b) is three arc driver blades, has three groups of projections outside the circumferential position of described drive plate, by described three driver blades by hinge in the complementary protuberance of described drive plate; The second driving device in described step (c) is transmission cylinder, described transmission cylinder is fixed in described air pump rotating shaft, described transmission cylinder have after installing with described drive plate circumferential position outside opposing end surface, described driver blade and described transmission cylinder) opposing end surface between have gap; The first electrical controller in described step (d) is the electromagnet assembly be made up of electromagnetic core and coil, described electromagnet assembly is arranged on the inner chamber of the circumferential position place end face of described drive plate.

(2) the first driving device in described step (b) is three arc driver blades; The second driving device in described step (c) is transmission cylinder, described transmission cylinder is fixed in described air pump rotating shaft, described transmission cylinder have after installing with described drive plate circumferential position inside opposing end surface, the described circumferential position inner side end of described drive plate have three groups of projections, by described three driver blades by hinge in the complementary protuberance of described drive plate, have gap between the described opposing end surface of described driver blade and described transmission cylinder; The electromagnet assembly that the first electrical controller in described step (d) is permanent magnet and is made up of electromagnetic core and coil, described permanent magnet is arranged on the inner chamber of described transmission cylinder, outside the described circumferential position place end face described electromagnet assembly being arranged on described drive plate; When described coil obtains electric, the magnetic attraction of described electromagnetic core to described driver blade is greater than the magnetic attraction of described permanent magnet to described driver blade.

Adopt above-mentioned manufacture method, reduce the quality of each parts of brake compressor as much as possible, save material, improve the precision of each constituent elements, simplify each block construction and annexation, guarantee good transmission effect, realize control system of switching on or off electricity transmission and ensure that the air pump rotating shaft when power-off of above-mentioned brake compressor can rotate.

A kind of control method to above-mentioned brake compressor of the present invention, step comprises:

When air pump force value is lower than the 4th setting value, make the first electrical controller power-off;

When air pump force value is equal to or higher than the 4th setting value, the first electrical controller is obtained electric.

Adopt above-mentioned control method, be according to the air pressure of brake system on automobile need to control the first electrical controller electric and power-off, and guarantee that brake compressor can work when the first electrical controller power-off.

Below in conjunction with accompanying drawing, brake compressor of the present invention is described further.

Accompanying drawing explanation

Fig. 1 is the front sectional view of three-speed electromagnetic fan clutch of the prior art;

Fig. 2 is the front sectional view of embodiment one;

Fig. 3 is the cutaway view along A-A line direction in Fig. 2;

Fig. 4 is the block diagram of the drive plate in embodiment one;

Fig. 5 is the block diagram of the driver blade in embodiment one;

Fig. 6 a and Fig. 6 b is the block diagram of the electromagnetic core in embodiment one;

Fig. 7 is the right elevation that the drive plate in embodiment one coordinates with driver blade;

Fig. 8 is the B direction view of Fig. 7.

Fig. 9 is the right elevation of the transmission cylinder in embodiment one;

Figure 10 is the cutaway view along C-C line direction in Fig. 9;

Figure 11 is the front sectional view of embodiment two;

Figure 12 is the front sectional view of embodiment three;

Figure 13 is the cutaway view along D-D line direction in Figure 12;

Figure 14 is the block diagram of the drive plate in embodiment three;

Figure 15 is the block diagram of the electromagnetic core in embodiment three;

Figure 16 is the right elevation that the drive plate in embodiment three coordinates with driver blade;

Figure 17 is the E direction view of Figure 16;

Figure 18 is the front sectional view of embodiment four;

Figure 19 is the front sectional view of embodiment five;

Figure 20 is the cutaway view along F-F line direction in Figure 19;

Figure 21 is the right elevation that the drive plate in embodiment five coordinates with driver blade;

Figure 22 is the G direction view of Figure 21;

Figure 23 is the front sectional view of the transmission cylinder in embodiment five;

Figure 24 is the cutaway view along H-H line direction in Figure 23;

Figure 25 is the front sectional view of embodiment six.

Detailed description of the invention

Be applied in electromagnetic fan clutch on automobile and air pump for the electromagnetic gear be made up of drive plate, the first driving device, the second driving device and the first electrical controller below and be described in detail by reference to the accompanying drawings, the manufacture method of the equipment in each embodiment and control method are illustrated simultaneously, wherein embodiment one to three is the embodiment that above-mentioned electromagnetic gear is applied in single speed, two speed, three-speed electromagnetic fan clutch respectively, and the first electrical controller wherein and the second electrical controller all only include electromagnetic core and coil; Embodiment four is for single speed electromagnetic fan clutch, and the embodiment the first electrical controller being comprised to electromagnetic core, coil and permanent magnet is described; Embodiment five, six is the embodiment that above-mentioned electromagnetic gear is applied in air pump, and the first electrical controller wherein in embodiment five only includes electromagnetic core and coil, and the first electrical controller in embodiment six comprises electromagnetic core, coil and permanent magnet.

Embodiment one

As shown in Figure 2, a kind of electromagnetic gear, comprise drive plate 102 (as shown in Figure 4), also comprise the first driving device, second driving device and the first electrical controller, as shown in Fig. 3, Fig. 7, Fig. 8, wherein the first driving device comprises three driver blades 106, three driver blades 106 are hinged in the projection 117 on drive plate 102 circumferential position by bearing pin 124, the shape of driver blade 106 is arc (as shown in Figure 5), and the outside face of driver blade 106 is provided with the repressed arcuate friction sheet 106a be bonded on driver blade 106 of one deck; Second driving device is transmission cylinder 107 (as shown in Figure 9, Figure 10), and transmission cylinder 107 has the opposing end surface with drive plate 102 outside the circumferential position of drive plate 102, has gap between transmission cylinder 107 and friction lining 106a; First electrical controller comprises the electromagnet assembly be made up of electromagnetic core 103 and coil 104, electromagnet assembly is positioned at drive plate 102 inner chamber, wherein electromagnetic core 103 is arranged on transmission shaft 101 by the second bearing 105, and electromagnetic core 103 is flexible coupling by fixing sebific duct and engine body, drive plate 102 and driver blade 106 are made by permeability magnetic material, as shown in Figure 2, Figure 4 shows, the circumferential position of drive plate 102 is provided with 6 groups of magnet isolation tanks 122.

As shown in Fig. 4, Fig. 7, Fig. 8, three projections 117 are provided with outside the circumferential position of drive plate 102, be evenly distributed on the circumferential position of drive plate 102, three driver blades 106 are hinged in three projections 117 by pin 124, driver blade 106 by pin 124 do away from or near the rotation of drive plate 102 circumferential position.

Also comprise passive device, passive device is fan fixed disk 109, as shown in Figure 1, fan fixed disk 109 is arranged on transmission shaft 101 by clutch shaft bearing 108, composition graphs 9, shown in Figure 10, three groups of fixed plates 120 on transmission cylinder 107 one end are fixed in fan fixed disk 109 by binding bolt 118, drive plate 102 is fixedly mounted on transmission shaft 101 by semi-round key 119, electromagnetic core 103 is arranged on transmission shaft 101 at the inner chamber of drive plate 102 by the second bearing 105, composition graphs 6a, shown in Fig. 6 b, coil 104 is located in coil embedding groove 103a that electromagnetic core 103 is offered, the magnetic conduction opening direction of coil embedding groove 103a points to the circumferential position of drive plate 102.

When the first electrical controller (coil 104) obtains electric, first electrical controller (having the electromagnetic core 103 of magnetic attraction) drives the first driving device (outside face is bonded with the driver blade 106 of friction lining 106a) to make the power of the second driving device (transmission cylinder 107) and drive plate 102 be separated (on outside the circumferential position place end face that driver blade 106 is pull-in on drive plate 102, not engaging with transmission cylinder 107); When the first electrical controller (coil 104) power-off, the first electrical controller (not having the electromagnetic core 103 of magnetic attraction) drives the first driving device (outside face is bonded with the driver blade 106 of friction lining 106a) that the second driving device (transmission cylinder 107) is engaged with the power of drive plate 102 (driver blade 106 be hinged on drive plate 102 compresses transmission cylinder 107 by friction lining 106a under centrifugal action).

As shown in Figure 2, the specific works process of a kind of electromagnetic gear of the present invention in single speed electromagnetic fan clutch is as follows:

After engine starting, driven by engine main shaft 101 rotates, and main shaft 101 is with nutating disk 102 to rotate at full speed by semi-round key 119.

When Engine Coolant Temperature not yet reaches first setting value 82 DEG C of coolant-temperature switch 125, coolant-temperature switch 125 controls to make the circuit of coil 104 be in on-state, the radial adhesive magnetic field that now electromagnetic core 103 produces firmly is pull-in on the driver blade 106 being connected with friction lining 106a on drive plate 102, friction lining 106a and transmission cylinder 107 do not come in contact, and fan fixed disk 109 and coupled transmission cylinder 107 are by clutch shaft bearing 108 free rotary.

When water temperature is elevated to first setting value 82 DEG C of coolant-temperature switch 125, coolant-temperature switch 125 controls the circuit disconnecting coil 104, three driver blades 106 compress transmission cylinder 107 by friction lining 106a under the influence of centrifugal force, transmission cylinder 107 and drive plate 102 is made to reach synchronized rotation, transmission cylinder 107 drives the fan in fan fixed disk 109 to rotate, and reaches the effect of powerful cooling; If automobile in the process of moving electric power system catastrophic failure causes coil 104 power-off, then electromagnetic core 103 not there is magnetic can not adhesive three driver blades 106, three driver blades 106 compress transmission cylinder 107 by friction lining 106a under centrifugal action makes transmission cylinder 107 and drive plate 102 reach synchronized rotation, to reach same powerful cooling-down effect.

The present invention is to the manufacture method of above-mentioned electromagnetic gear (being applied in single speed electromagnetic fan clutch), comprise the following steps: (a) casts drive plate 102 and carry out machine up, there are outside the circumferential position of drive plate 102 three groups of projections 117, b () casts the first driving device, i.e. three arc driver blades 106, and carries out machine up, c () casts the second driving device, i.e. transmission cylinder 107, and carries out machine up, d () is cast the electromagnetic core 103 in the first electrical controller and is carried out machine up, be loaded on by coil 104 in the coil embedding groove 103a on electromagnetic core 103 with flat winding, e drive plate 102 is arranged on transmission shaft 101 by semi-round key 119 by (), three driver blades 106 are hinged in the complementary protuberance 117 of drive plate 102 by bearing pin 124, electromagnetic core 103 to be arranged on transmission shaft 101 by the second bearing 105 and to be positioned at the inner chamber of drive plate 102 circumferential position place end face, fan fixed disk 109 (passive device) is arranged on transmission shaft 101 by clutch shaft bearing 108, bolt is utilized to be arranged in fan fixed disk 109 by three groups of fixed plates 120 transmission cylinder 107, transmission cylinder 107 install after have with drive plate 102 circumferential position place end face outside opposing end surface, gap is had between the opposing end surface of driver blade 106 and transmission cylinder 107, make after installation:

When coil 104 obtains electric, driver blade 106 is pull-in in the circumferential position end face outside of drive plate 102 by electromagnetic core 103, and transmission cylinder 107 and drive plate 102 are separated;

When coil 104 power-off, electromagnetic core 103 not adhesive driver blade 106, driver blade 106 compresses transmission cylinder 107 under the influence of centrifugal force, transmission cylinder 107 is engaged by the power of driver blade 106 with drive plate 102, thus makes drive plate 102 drive fan fixed disk 109 to rotate by driver blade 106, transmission cylinder 107.

A kind of control method to above-mentioned electromagnetic gear (being applied in single speed electromagnetic fan clutch) of the present invention, step comprises:

When Engine Coolant Temperature is lower than the first setting value 82 DEG C, temperature sensor 125 controls the circuit of closing coil 104, and coil 104 obtains electric, and electromagnetic core 103 has magnetic;

When Engine Coolant Temperature reaches the first setting value 82 DEG C or continue to raise, temperature sensor 125 controls the circuit disconnecting coil 104, and coil 104 power-off, electromagnetic core 103 does not have magnetic.

Embodiment two

As shown in figure 11, under the prerequisite that other structures in the embodiment one shown in Fig. 2-10 are constant, the difference structure of in the present embodiment two fast electromagnetic fan clutch and embodiment one is: also comprise magnet fixed disc 210, magnet fixed disc 210 is positioned at fan fixed disk 209 inner chamber, and be arranged on transmission shaft 201 by drive sleeve 233, magnet fixed disc 210 is inlaid with some first soft irons 215 with the opposing end surface position of fan fixed disk 209, on first soft iron 215, magnetic absorption has permanent magnet 214, fan fixed disk 209 is inlaid with the second soft iron 216 at the correspondence position with permanent magnet 214.

As shown in figure 11, the specific works process of a kind of electromagnetic gear of the present invention in two fast electromagnetic fan clutch is as follows:

After engine starting, driven by engine main shaft 201 rotates, and main shaft 201 is with nutating disk 202 to rotate at full speed by semi-round key 219, and main shaft 201 drives magnet fixed disc 210 to rotate at full speed by drive sleeve 233 simultaneously.

When Engine Coolant Temperature not yet reaches first setting value 82 DEG C of coolant-temperature switch 225, coolant-temperature switch 225 controls to make the circuit of coil 204 be in on-state, electromagnetic core 203 produces radial adhesive magnetic field firm for three driver blades 206 being connected with friction lining 206a adhesive on drive plate 202, friction lining 206a and transmission cylinder 207 do not come in contact, and fan fixed disk 209 thus can not be driven to rotate; Meanwhile, second soft iron 216 rotates permanent magnet 214 is relative with the magnetic field that the first soft iron 215 is formed, second soft iron 216 cutting magnetic line produces vortex flow, vortex flow produces new magnetic field, realize magnet fixed disc 210 under the action of a magnetic force and drive the transfer of fan fixed disk 209 differential, that is: fan fixed disk 209 and magnet fixed disc 210 flexibly connect middling speed and rotate, and play the effect of preliminary radiating and cooling, make the operating temperature that automotive engine keeps suitable.

When Engine Coolant Temperature is elevated to first setting value 82 DEG C of coolant-temperature switch 225, coolant-temperature switch 225 controls the circuit disconnecting coil 204, three driver blades 206 compress transmission cylinder 207 by three friction lining 206a under the influence of centrifugal force, transmission cylinder 207 and drive plate 202 is made to reach synchronized rotation, transmission cylinder 207 drives the fan in fan fixed disk 209 to rotate, and reaches the effect of powerful cooling; If automobile in the process of moving electric power system catastrophic failure causes coil 204 power-off, then due to coil 204 power-off electric magnetic core 203 does not have magnetic can not adhesive driver blade 206, three driver blades 206 compress transmission cylinder 207 by three friction lining 206a under the influence of centrifugal force, transmission cylinder 207 and drive plate 202 is made to reach synchronized rotation, transmission cylinder 207 drives the fan in fan fixed disk 209 to rotate, to reach same powerful cooling-down effect.

Identical with the corresponding construction in embodiment one, in accompanying drawing 11 224 is bearing pin, and 205 is the second bearing, and 208 is clutch shaft bearing, and 220 is the fixed plate on transmission cylinder 201, and 222 is the magnet isolation tank that drive plate 202 opposing end surface is offered.

Magnet fixed disc 210 is not limited to above-mentioned situation with the position of permanent magnet 214, first soft iron 215 in fan fixed disk 209 and the second soft iron 216, magnet fixed disc 210 is made to drive fan fixed disk 209 transfer as long as magnetic effect can be reached through, such as can the first soft iron 215 and permanent magnet 214 be located in fan fixed disk 209, the second soft iron 216 is located on magnet fixed disc 210.

The present invention is to the manufacture method of above-mentioned electromagnetic gear (being applied in two fast electromagnetic fan clutch), substantially identical with the manufacture method in embodiment one, difference is: casting magnet fixed disc 210 also carries out machine up, before provided with fan reaction plate 209 (passive device), first magnet fixed disc 210 is fixedly mounted on transmission shaft 201 by drive sleeve 233, be positioned at fan fixed disk 209 inner chamber, magnet fixed disc 210 is inlaid with the first soft iron 215 corresponding with end face fan fixed disk 209 being inlaid with the second soft iron 216 with the end face of permanent magnet 214.

A kind of control method to above-mentioned electromagnetic gear (being applied in two fast electromagnetic fan clutch) of the present invention is identical with the control method in embodiment one.

Embodiment three

As shown in figure 12, under the prerequisite that other structures in embodiment two shown are in fig. 11 constant, the difference structure of the three-speed electromagnetic fan clutch in the present embodiment and embodiment one is: magnet fixed disc 310 is arranged on drive plate 302 by the 3rd bearing 311 (replacing the drive sleeve 233 in embodiment two), in electromagnetic core 303 offers, exterior loop embedding groove 303a, 303b (as shown in figure 15), exterior loop 304a (the first electrical controller, act on the coil 204 be equal in embodiment two) be located in exterior loop embedding groove 303a, the magnetic conduction opening direction of exterior loop embedding groove 303a points to the circumferential position of drive plate 302, interior loop 304b (the second electrical controller) is located in interior loop embedding groove 303b, the magnetic conduction opening direction of interior loop embedding groove 303b points to magnet fixed disc 310 vertically, magnet fixed disc 310 there is little adhesive dish 313 with the correspondence position of interior loop 304b by submissile reed 312 support and connection, little adhesive dish 313 is near drive plate 302 and have gap with between the corresponding end face of drive plate 302.When interior loop 304b (the second electrical controller) obtains electric, electromagnetic core 303 produces axial magnetic suction, electromagnetic core 303 passes through drive plate 302 by the adhesive of little adhesive dish 313 on drive plate 302, magnet fixed disc 310 is engaged with drive plate 302, and the power of drive plate 302 is directly passed to magnet fixed disc 310.

As shown in figure 14, the side opening of drive plate 302 is provided with magnet isolation tank 323 in 6 groups, the circumferential position place end face of drive plate 302 offers 6 groups of outer magnet isolation tanks 322, as shown in figure 13, the outside face of driver blade 306 is provided with the repressed friction lining 306a be bonded on driver blade 306 of one deck, friction lining 306a has larger friction coefficient and transmission cylinder 307 can be driven to rotate, transmission cylinder 307 does Wear-resistant Treatment with the apparent surface of friction lining 306a, to make the transmission better effects if between friction lining 306a and transmission cylinder 307, when exterior loop 304a power-off, driver blade 306 can compress transmission cylinder 307 by friction lining 306a under the influence of centrifugal force, and drive fan fixed disk 309 to rotate at full speed by transmission cylinder 307, to reach the effect of lowering the temperature at full speed to driving engine.

As shown in Figure 16, Figure 17, be provided with three projections 317 outside the circumferential position of drive plate 302, be evenly distributed on the circumferential position of drive plate 302, three driver blades 306 are hinged in three projections 317 by pin 324.

As shown in figure 12, the specific works process of a kind of electromagnetic gear of the present invention in three-speed electromagnetic fan clutch is as follows:

After engine starting, driven by engine main shaft 301 rotates, and main shaft 301 is with nutating disk 302 to rotate at full speed by semi-round key 319.

When Engine Coolant Temperature not yet reaches second setting value 82 DEG C of coolant-temperature switch 325, coolant-temperature switch 325 controls to give connection to external call and encloses the circuit of 304a, electromagnetic core 303 produces radial adhesive magnetic field firm for three driver blades 306 being connected with friction lining 306a adhesive on drive plate 302, three friction lining 306a and transmission cylinder 307 do not come in contact, fan fixed disk 309 is by clutch shaft bearing 308 free rotary, interior loop 304b keeps off-position, the little adhesive dish 313 of drive plate 302 not adhesive, drive plate 302 keeps the phase-separated state with magnet fixed disc 310, magnet fixed disc 310 is by the 3rd bearing 311 free rotary.

When Engine Coolant Temperature is elevated to second setting value 82 DEG C of coolant-temperature switch 325, coolant-temperature switch 325 controls the circuit connecting interior loop 304b, electromagnetic core 303 produces axial the suction-combining force, little conjunction will be inhaled coil in 313 adhesives to drive plate 302 with drive plate 302 synchronous rotary, little adhesive dish 313 drives magnet fixed disc 310 to rotate by submissile reed 312, being embedded in the second soft iron 316 in fan fixed disk 307 permanent magnet 314 is relative with the magnetic field that the first soft iron 315 is formed rotates, second soft iron 316 cutting magnetic line produces vortex flow, vortex flow produces new magnetic field, realize magnet fixed disc 310 under the action of a magnetic force and drive the transfer of fan fixed disk 309 differential, that is: fan fixed disk 309 and magnet fixed disc 310 flexibly connect middling speed and rotate, play the effect of preliminary radiating and cooling, make the operating temperature that automotive engine keeps suitable.

If Engine Coolant Temperature continues the 3rd setting value 88 DEG C being elevated to coolant-temperature switch 325, coolant-temperature switch 325 controls the power supply disconnecting exterior loop 304a, three driver blades 306 compress transmission cylinder 307 by three friction lining 306a under the influence of centrifugal force makes transmission cylinder 307 and drive plate 302 reach synchronized rotation, transmission cylinder 307 drives the fan in fan fixed disk 309 to rotate, and reaches the effect of powerful cooling.

If automobile in the process of moving electric power system catastrophic failure causes exterior loop 304a power-off, then due to exterior loop 304a power-off electric magnetic core 303 does not have magnetic can not adhesive driver blade 306, three driver blades 306 compress transmission cylinder 307 by friction lining 306a under the influence of centrifugal force, transmission cylinder 307 and drive plate 302 is made to reach synchronized rotation, to reach same powerful cooling-down effect.

Identical with the corresponding construction in embodiment two, in accompanying drawing 12 305 is the second bearing, and 320 is the fixed plate on transmission cylinder 301.

Adopt said structure, not only can realize three speed coolings, also assures that fan fixed disk can rotate cooling under burst powering-off state, prevent indicating oven temp. of engine, this device can prevent the fan stall caused because magnetic clutch lost efficacy in prior art, thus more secure and reliable to use.

The present invention is to the manufacture method of above-mentioned electromagnetic gear (being applied in three-speed electromagnetic fan clutch), substantially identical with the manufacture method in embodiment two (coil 204 role wherein in exterior loop 304a and embodiment two is identical), difference is: magnet fixed disc 310 is arranged on transmission shaft 301 by the 3rd bearing 311, add the second electrical controller (interior loop 304b, be located on electromagnetic core 303), magnet fixed disc 310 there is little adhesive dish 313 with the correspondence position of interior loop 304b by submissile reed 312 support and connection.

A kind of control method to above-mentioned electromagnetic gear (being applied in three-speed electromagnetic fan clutch) of the present invention, step comprises:

When Engine Coolant Temperature is lower than the second setting value 82 DEG C, temperature sensor 325 controls to give connection to external call and encloses the circuit of 304a, control interior loop 304b simultaneously and keep off-position, end face electromagnetic core 303 pointing to drive plate 302 circumferential position has magnetic, and the end face pointing to little adhesive dish 313 does not have magnetic;

When Engine Coolant Temperature be equal to or higher than the second setting value 82 DEG C and lower than the 3rd setting value 88 DEG C time, temperature sensor 325 controls exterior loop 304a and keeps obtaining electricity condition, control interior loop 304b obtains electric simultaneously, end face electromagnetic core 303 pointing to drive plate 302 circumferential position has magnetic, and the end face pointing to little adhesive dish 313 also has magnetic;

When Engine Coolant Temperature is equal to or higher than the 3rd setting value 88 DEG C, temperature sensor 325 controls exterior loop 304a power-off, control interior loop 304b obtains electric simultaneously, end face electromagnetic core 303 pointing to drive plate 302 circumferential position does not have magnetic, driver blade 306 compresses transmission cylinder 307 under centrifugal action, fan fixed disk 309 is driven to rotate at full speed, now no matter whether magnet fixed disc 310 rotates, fan fixed disk 309 all can rotate at full speed, thus when now control interior loop 304b obtains electric or chance accident power-off situation, this driving device all can make fan fixed disk 309 rotate at full speed.

Embodiment four

As shown in figure 18, under the prerequisite that other structures in the embodiment one shown in Fig. 2-10 are constant, single speed electromagnetic fan clutch in the present embodiment and the difference structure of embodiment one are: the electromagnet assembly that the first electrical controller comprises permanent magnet 403c and is made up of electromagnetic core 403 and coil 404, permanent magnet 403c is positioned at the inner side of transmission cylinder 407, the particular location of permanent magnet 403c is arranged on transmission shaft 401 by the second bearing 405 as shown in figure 18, and be positioned at the inner chamber of drive plate 402, end face permanent magnet 403c pointing to drive plate 402 circumferential position is magnetic pole, electromagnet assembly 403, 404 outsides being positioned at transmission cylinder 407, electromagnetic core 403 is flexible coupling by fixing sebific duct and engine body, first driving device comprises three driver blades 406, driver blade 406 is rotatably connected on transmission cylinder 407 with on the opposing end surface of drive plate 402, the shape of driver blade 406 is arc, the inside face of driver blade 406 is provided with the repressed arcuate friction sheet 406a be bonded on driver blade 406 of one deck, driver blade 406, transmission cylinder 407, drive plate 402 all can magnetic conductions, when coil 404 electric time electromagnetic core 403 pairs of driver blades 406 magnetic attraction be greater than the magnetic attraction of permanent magnet 403c to driver blade 406.

As shown in figure 18, the circumferential position place end face of drive plate 402 offers some groups of magnet isolation tanks 422, the opposing end surface of transmission cylinder 407 also offers some groups of magnet isolation tank 407a, 420 is the fixed plate on transmission cylinder 407,417 is the projection on transmission cylinder 407 on inner side end, for installing driver blade 406 by bearing pin 424.

As shown in figure 18, the specific works process of electromagnetic gear of the present invention in single speed electromagnetic fan clutch is as follows:

After engine starting, driven by engine main shaft 401 rotates, and main shaft 401 is with nutating disk 402 to rotate at full speed by semi-round key 419.

When Engine Coolant Temperature not yet reaches first setting value 82 DEG C of coolant-temperature switch 425, coolant-temperature switch 425 controls to make the circuit of coil 404 be in on-state, coil 404 now in electromagnetic core 403 switches on power, the magnetic attraction of electromagnetic core 403 to the driver blade 406 being connected with friction lining 406a is greater than the magnetic attraction of permanent magnet 403c to corresponding driver blade 406, thus the driver blade 406 being connected with friction lining 406a can firmly be pull-in on the inwall of transmission cylinder 407 under the force action of deflection electromagnetic core 403 side, friction lining 406a inside driver blade 406 and drive plate 402 do not come in contact, fan fixed disk 409 and coupled transmission cylinder 407 are by clutch shaft bearing 408 free rotary.

When water temperature is elevated to first setting value 82 DEG C of coolant-temperature switch 425, coolant-temperature switch 425 controls the circuit disconnecting coil 404, now electromagnetic core 403 pairs of driver blades 406 do not have magnetic attraction, three driver blades 406 are firmly pull-in in the circumferential position end face outside of drive plate 402 under the magnetic fields of permanent magnet 403c, thus make drive plate 402 drive transmission cylinder 407 to rotate by three driver blades 406, transmission cylinder 407 drives the fan in fan fixed disk 409 to rotate, and reaches the effect of powerful cooling.

If automobile is the power-off of electric power system catastrophic failure in the process of moving, then because coil 404 power-off electric magnetic core 403 can not adhesive three driver blades 406, three driver blades 406 are firmly pull-in in the circumferential position end face outside of drive plate 402 under the magnetic fields of permanent magnet 403c, drive plate 402 is made to drive transmission cylinder 407 by three driver blades 406 and then drive the fan in fan fixed disk 409 to rotate, to reach same powerful cooling-down effect.

Certainly, the particular location of permanent magnet 403c is not limited to be arranged on transmission shaft 401 by the second bearing 405 shown in Figure 18, on outside the circumferential position place end face that also permanent magnet 403c can be embedded in drive plate 402, or directly permanent magnet material is adopted to make drive plate 402.

In the present embodiment, the embodiment of electromagnet assembly that the first electrical controller in single speed electromagnetic fan clutch comprises permanent magnet and is made up of electromagnetic core and coil, be equally applicable to two fast electromagnetic fan clutch in embodiment two and the three-speed electromagnetic fan clutch in embodiment three, when adopting this embodiment in two speed and three-speed electromagnetic fan clutch, the remaining part be connected with the first electrical controller structurally makes adaptations.

The present invention is to the manufacture method of above-mentioned electromagnetic gear (being applied in single speed electromagnetic fan clutch), substantially identical with the manufacture method in embodiment one, difference is: have three groups of projections 417 inside the opposing end surface of transmission cylinder 407, three driver blades 406 are hinged in the complementary protuberance 417 of transmission cylinder 407 by bearing pin 424, between the circumferential position end face outside of driver blade 406 and drive plate 402, have gap; The electromagnet assembly that the first electrical controller in step (d) is permanent magnet 403c and is made up of electromagnetic core 403 and coil 404, permanent magnet 403c to be arranged on transmission shaft 401 by bearing 405 and to be positioned at the inner chamber of drive plate 402, outside opposing end surface electromagnet assembly being located at transmission cylinder 407, electromagnetic core 403 is fixed on motor body; When coil 404 obtains electric, the magnetic attraction of electromagnetic core 403 pairs of driver blades 406 is greater than the magnetic attraction of permanent magnet 403c to driver blade 406.

A kind of control method to above-mentioned electromagnetic gear (being applied in single speed electromagnetic fan clutch) of the present invention is identical with the control method in embodiment one.

Embodiment five

As shown in figure 19, a kind of electromagnetic gear, (drive plate 502 is belt pulley to comprise drive plate 502, by driven by engine, it rotates), also comprise the first driving device, second driving device and the first electrical controller, wherein the first driving device comprises three driver blades 506, as illustrated in figs 20-22, three driver blades 506 are hinged on the circumferential position of drive plate 502 by bearing pin 524, the shape of driver blade 506 is arc, and the outside face of driver blade 506 is provided with the repressed arcuate friction sheet 506a be bonded on driver blade 506 of one deck; Second driving device is transmission cylinder 507 (as shown in Figure 23,24), and transmission cylinder 507 has the opposing end surface with drive plate 502 outside the circumferential position of drive plate 502, has gap between the opposing end surface of transmission cylinder 507 and friction lining 506a; First electrical controller comprises the electromagnet assembly be made up of electromagnetic core 503 and coil 504, and electromagnet assembly is positioned at drive plate 502 inner chamber, and drive plate 502, driver blade 506 and transmission cylinder 507 are made by permeability magnetic material.

As shown in figure 19, also comprise passive device, passive device is air pump rotating shaft 509, drive plate 502 is arranged in air pump rotating shaft 509 by bearing 502a, transmission cylinder 507 is fixedly mounted in air pump rotating shaft 509 by semi-round key 519, electromagnetic core 503 is fixed on air pump shell 509a by binding bolt, electromagnetic core 503 offers coil embedding groove, coil 504 is located in coil embedding groove, the magnetic conduction opening direction of coil embedding groove is identical with the radially direction of air pump rotating shaft 509, inside the circumferential position place end face of sensing drive plate 502, the circumferential position place end face of drive plate 502 offers 6 groups of magnet isolation tanks 522 facing to magnetic conduction opening direction place, in conjunction with Figure 20, Figure 23, shown in 24, transmission cylinder 507 is provided with 6 groups of magnet isolation tank 507a at the correspondence position with the magnet isolation tank 522 on drive plate 502.

As shown in Figure 21,22, along excircle to being evenly provided with three raised 517 outside the circumferential position of drive plate 502, one end of three driver blades 506 respectively by pin-hinges in corresponding projection 517; Transmission cylinder 507 does Wear-resistant Treatment with the apparent surface of driver blade 506.

As shown in figure 19, when the first electrical controller (coil 504) obtains electric, first electrical controller (having the electromagnetic core 503 of magnetic attraction) drives the first driving device (namely outside face is bonded with the driver blade 506 of friction lining 506a) to make the power of the second driving device (i.e. transmission cylinder 507) and drive plate 502 be separated (on outside the circumferential position that driver blade 506 is pull-in on drive plate 502, not engaging with transmission cylinder 507); When the first electrical controller (coil 504) power-off, the first electrical controller (not having the electromagnetic core 503 of magnetic attraction) drives the first driving device (namely outside face is bonded with the driver blade 506 of friction lining 506a) that the second driving device (i.e. transmission cylinder 507) is engaged with the power of drive plate 502 (driver blade 506 compresses transmission cylinder 507 by friction lining 506a under centrifugal action).

As shown in figure 19, the specific works process of a kind of electromagnetic gear of the present invention in air pump is as follows:

After engine starting, band nutating disk 502 (belt pulley) rotates, when air pump internal pressure is equal to or higher than the 4th setting value 6-8 kilogram (when brake system can normally work), air pump is without the need to work, now pressure switch 525 control coil 504 obtains electric, by driver blade 506 adhesive in drive plate 502 circumferential position end face outside, friction material 506a does not contact with transmission cylinder 507, power can not be passed to air pump rotating shaft 509 by transmission cylinder 507 by drive plate 502, gas air pump inoperative.

When air pump internal pressure is lower than (during brake system cisco unity malfunction) during the 4th setting value 6-8 kilogram, now pressure switch 525 control coil 504 power-off, driver blade 506 compresses transmission cylinder 507 under centrifugal action, make transmission cylinder 507 and the synchronized rotation of drive plate 502, transmission cylinder 507 drives air pump rotating shaft 509 to rotate, and makes air pump enter mode of operation.

When et out of order causes coil 504 suddenly power-off to magnetic clutch when driving, driver blade 506 is not attracted by electromagnetic core 503, driver blade 506 compresses transmission cylinder 507 under centrifugal action, make transmission cylinder 507 and drive plate 502 synchronous rotary, transmission cylinder 507 drives air pump rotating shaft 509 to rotate, and air pump still can normally be worked under burst powering-off state.

The present invention is to the manufacture method of above-mentioned electromagnetic gear (being applied in air pump), substantially identical with the manufacture method in embodiment one, difference is: drive plate 502 is by the belt pulley of driven by engine, passive device is air pump rotating shaft 509, drive plate 502 is arranged in air pump rotating shaft 509 by bearing 502a, transmission cylinder 507 is fixedly mounted in air pump rotating shaft 509 by semi-round key 519, and electromagnetic core 503 is bolted on air pump shell 509a.

A kind of control method to above-mentioned electromagnetic gear (being applied in air pump) of the present invention, step comprises:

When air pump pressure is lower than the 4th setting value 6-8 kilogram, the power-off of pressure switch 525 control coil 504, drive plate 502 by driver blade 506 and transmission cylinder 507 by transmission of power to air pump rotating shaft 509, air pump work;

When air pump pressure is equal to or higher than the 4th setting value 6-8 kilogram, pressure switch 525 control coil 504 obtains electric, and driver blade 506 is pull-in in drive plate 502 circumferential position end face outside, is not combined with transmission cylinder 507, can not by transmission of power to air pump rotating shaft 509, gas air pump inoperative.

Embodiment six

As shown in figure 25, under the prerequisite that other structures in the embodiment five shown in Figure 19-24 are constant, the difference structure of the air pump in the present embodiment and embodiment five is: the electromagnet assembly that the first electrical controller comprises permanent magnet 603c and is made up of electromagnetic core 603 and coil 604, permanent magnet 603c is positioned at the inner chamber of transmission cylinder 607, and being fixed on air pump shell 609a by binding bolt, electromagnet assembly to be positioned at outside drive plate 602 circumferential position and to be bolted on air pump shell 609a.

As shown in figure 25, first driving device comprises three driver blades 606, driver blade 606 is hinged in the projection 617 inside drive plate 602 circumferential position by bearing pin 624, driver blade 606 is positioned at drive plate 602 with on the opposing end surface of transmission cylinder 607, the shape of driver blade 606 is arc, the inside face of driver blade 606 is provided with the repressed arcuate friction sheet 606a be bonded on driver blade 606 of one deck, gap is had between the opposing end surface of friction lining 606a and transmission cylinder 607, drive plate 602 between permanent magnet 603c and the opposing end surface of electromagnetic core 603 and transmission cylinder 607 all offer some groups of magnet isolation tanks 622 and 607a, when coil 604 obtains electric, the magnetic attraction of electromagnetic core 603 pairs of driver blades 606 is greater than the magnetic attraction of permanent magnet 603c to driver blade 606.

As shown in figure 25, the specific works process of electromagnetic gear of the present invention in air pump is as follows:

After engine starting, band nutating disk 602 (belt pulley) rotates, when air pump internal pressure is equal to or higher than the 4th setting value 6-8 kilogram (when brake system can normally work), air pump is without the need to work, pressure switch 625 control coil 604 obtains electric, electromagnetic core 603 by driver blade 606 adhesive on the inner end surface of drive plate 602, the friction material 606a be now positioned on driver blade 606 inside face does not contact with transmission cylinder 607, transmission cylinder 607 can not by the transmission of power of drive plate 602 to air pump rotating shaft 609, gas air pump inoperative.

When air pump internal pressure is lower than (during brake system cisco unity malfunction) during the 4th setting value 6-8 kilogram, now pressure switch 525 controls the circuit disconnecting coil 604, electromagnetic core 603 pairs of driver blades 606 do not have magnetic attraction, three driver blades 606 are firmly pull-in on outside the opposing end surface of transmission cylinder 607 under the magnetic fields of permanent magnet 603c, thus make drive plate 602 drive transmission cylinder 607 to rotate by three driver blades 606, transmission cylinder 607 drives air pump rotating shaft 609 to rotate, and makes air pump enter mode of operation.

When electric power system et out of order causes coil 604 power-off suddenly when driving, driver blade 606 is not attracted by electromagnetic core 603, driver blade 606 is firmly pull-in on the outer wall of transmission cylinder 607 under the magnetic fields of permanent magnet 603c, the friction lining 606a of driver blade 606 inside face firmly compresses transmission cylinder 607, transmission of power is rotated to transmission cylinder 607 and then drive air pump rotating shaft 609 by driver blade 606 by drive plate 602, thus make air pump enter mode of operation under burst powering-off state, guarantee that vehicle can normal brake application under burst powering-off state.

Certainly, the particular location of permanent magnet 603c is not limited to be arranged in air pump rotating shaft 609 by bearing 602a shown in Figure 25, on outside the opposing end surface that also permanent magnet 603c can be embedded in transmission cylinder 607, or directly permanent magnet material is adopted to make on transmission cylinder 607 with the opposing end surface of driver blade 606.

The present invention is to the manufacture method of above-mentioned electromagnetic gear (being applied in air pump), substantially identical with the manufacture method in embodiment five, difference is: driver blade 606 is hinged on (in embodiment five in end face outside) on the inner side end of drive plate 602 circumferential position, the electromagnet assembly that the first electrical controller in step (d) is permanent magnet 603c and is made up of electromagnetic core 603 and coil 604, permanent magnet 603c is sheathed on air pump rotating shaft 609 outer shroud and is bolted on air pump shell 609a, permanent magnet 603c is located at transmission cylinder 607 inner chamber, outside opposing end surface electromagnet assembly being located at drive plate 602, electromagnetic core 603 is bolted on air pump shell 509a, when coil 604 obtains electric, the magnetic attraction of electromagnetic core 603 pairs of driver blades 606 is greater than the magnetic attraction of permanent magnet 603c to driver blade 606.

A kind of control method to above-mentioned electromagnetic gear (being applied in air pump) of the present invention is identical with the control method in embodiment five.

In embodiment one to six, driver blade is not limited to three, more than one, can arrange the driver blade of varying number, to ensure transmission best results according to the model etc. of driving device; Driver blade can connect friction lining to increase friction, better transmission, also can omit friction lining and driver blade and transmission cylinder be carried out Wear-resistant Treatment; Driver blade is steel, iron or other conductive magneto-conductive materials; Friction lining is all-metal, asbestos or other high-abrasive materials.

Friction lining and the connection mode of driver blade can be that the compacting in above-described embodiment one to six is bonding, also can be that bolt connects, rivets or other connection modes.

Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.

Claims (8)

1. a brake compressor, comprises drive plate (502; 602), air pump rotating shaft (509; 609), described drive plate (502; 602) by bearing (502a; 602a) be arranged on air pump rotating shaft (509; 609) on, it is characterized in that: also comprise the first driving device (506; 606), the second driving device (507; 607) and the first electrical controller (503,504; 603,604), described second driving device (507; 607) with described air pump rotating shaft (509; 609) be fixedly connected with, described second driving device comprises transmission cylinder (507; 607), described first driving device comprises at least one driver blade (506; 606), driver blade (506; 606) be arc-like sheet, drive plate (502; 602) outside circumferential position or inner side is provided with and driver blade (506; 606) projection (517 of same number; 617), driver blade (506; 606) by bearing pin (524; 624) drive plate (502 is hinged on; 602) complementary protuberance (517; 617) on; Described transmission cylinder (507,607) is at drive plate (502; 602) outside circumferential position or inner side has and drive plate (502; 602) opposing end surface, driver blade (506; 606) with transmission cylinder (507; 607) gap is left between opposing end surface;

When described first electrical controller (504; 604) when obtaining electric, described first electrical controller (503; 603) described first driving device (506 is driven; 606) described second driving device (507 is made; 607) with described drive plate (502; 602) be separated;

When described first electrical controller (504; 604) during power-off, described first electrical controller (503; 603) described first driving device (506 is driven; 606) described second driving device (507 is made; 607) with described drive plate (502; 602) engage.

2. brake compressor according to claim 1, it is characterized in that: described driver blade (506) is provided with three, evenly be provided with three groups of projections (517) outside the circumferential position of described drive plate (502), described three driver blades (506) are hinged on three groups of projections (517) of drive plate (502) by bearing pin (524);

Described first electrical controller comprises the electromagnet assembly be made up of electromagnetic core (503) and coil (504), and described electromagnet assembly is positioned at the inner chamber of the circumferential position place end face of described drive plate (502).

3. brake compressor according to claim 1, it is characterized in that: described driver blade (606) is provided with three, evenly be provided with three groups of projections (617) inside the circumferential position of described drive plate (602), described three driver blades (606) are hinged on three groups of projections (617) of drive plate (602) by bearing pin (624);

The electromagnet assembly that described first electrical controller comprises permanent magnet (603c) and is made up of electromagnetic core (603) and coil (604), described permanent magnet (603c) is positioned at the inner chamber of described transmission cylinder (607), and described electromagnet assembly is positioned at outside the circumferential position of described drive plate (602);

When described coil (604) obtains electric, described electromagnetic core (603) magnetic attraction to described driver blade (606) is greater than described permanent magnet (603c) to the magnetic attraction of described driver blade (606).

4. the brake compressor according to Claims 2 or 3, is characterized in that: described driver blade (506; 606) upper and described transmission cylinder (507; 607) opposing end surface place is fixedly connected with arcuate friction sheet (506a; 606a).

5. a manufacture method for brake compressor, is characterized in that comprising the following steps:

A () forms drive plate (502; 602) and air pump rotating shaft (509; 609);

B () forms the first driving device (506; 606);

C () forms the second driving device (507; 607);

D () forms the first electrical controller (503,504; 603,604);

E () described second driving device is transmission cylinder, by transmission cylinder (507; 607) described air pump rotating shaft (509 is fixed on; 609) on, transmission cylinder (507; 607) have and drive plate (502 after installing; 602) opposing end surface of outside circumferential position or inner side; Described first driving device is driver blade (506; 606), driver blade (506; 606) be arc-like sheet, by least one driver blade (506; 606) drive plate (502 is installed to; 602) outside circumferential position or the projection (517 of the corresponding number of inner side; 617) on, driver blade (506; 606) with transmission cylinder (507; 602) there is gap between opposing end surface, described first electrical controller (503,504 is installed; 603,604), by described drive plate (502; 602) by bearing (502a; 602a) be arranged on described air pump rotating shaft (509; 609), on, make:

When the first electrical controller (504; 604) when obtaining electric, described first electrical controller (503; 603) described first driving device (506 is driven; 606) described second driving device (507 is made; 607) with described drive plate (502; 602) be separated;

When the first electrical controller (504; 604) during power-off, described first electrical controller (503; 603) described first driving device (506 is driven; 606) described second driving device (507 is made; 607) with described drive plate (502; 602) engage.

6. the manufacture method of brake compressor according to claim 5, it is characterized in that: the first driving device in described step (b) is three arc driver blades (506), there are outside the circumferential position of described drive plate (502) three groups of projections (517), described three driver blades (506) are hinged in the complementary protuberance (517) of described drive plate (502) by bearing pin (524);

The first electrical controller in described step (d) is the electromagnet assembly be made up of electromagnetic core (503) and coil (504), described electromagnet assembly is arranged on the inner chamber of the circumferential position place end face of described drive plate (502).

7. the manufacture method of brake compressor according to claim 5, it is characterized in that: the first driving device in described step (b) is three arc driver blades (606), the described circumferential position inner side end of described drive plate (602) has three groups of projections (617), described three driver blades (606) are hinged in the complementary protuberance (617) of described drive plate (602) by bearing pin (624);

The electromagnet assembly that the first electrical controller in described step (d) is permanent magnet (603c) and is made up of electromagnetic core (603) and coil (604), described permanent magnet (603c) is arranged on the inner chamber of described transmission cylinder (607), outside the described circumferential position place end face described electromagnet assembly being arranged on described drive plate (602);

When described coil (604) obtains electric, described electromagnetic core (603) magnetic attraction to described driver blade (606) is greater than described permanent magnet (603c) to the magnetic attraction of described driver blade (606).

8., to a control method for the brake compressor according to any one of claim 1-4, step comprises:

When air pump force value is lower than setting value, make the first electrical controller (504,604) power-off;

When air pump force value is equal to or higher than setting value, the first electrical controller (504,604) is obtained electric.