CN102562253A - Electromagnetic fan clutch and manufacturing and control methods thereof - Google Patents

Abstract

The invention relates to an electromagnetic fan clutch, in particular to a two-speed electromagnetic fan clutch, which is used for cooling car engines and capable of enabling the fan to have two rotation speeds by controlling on and off of a first electric control device and guaranteeing full-speed rotation of the fan on emergency interruption. The electromagnetic fan clutch comprises a transmission shaft, a transmission disc, a fan fixing disc, a magnet fixing disc, a first transmission device, a second transmission device and the first electric control device, wherein the second transmission device is fixedly connected with the fan fixing disc. When being powered on, the first electric control device drives the first transmission device to separate the second transmission device from the transmission disc; and when being powered off, the first electric control device drives the first transmission device to realize connection of the second transmission device and the transmission disc. The invention further relates to manufacturing and control methods of the electromagnetic fan clutch.

Description

Electromagnetic fan clutch and production method thereof and controlling method

Technical field

The present invention relates to vehicle cooling equipment technical field, particularly relate to a kind of two fast electromagnetic fan clutch that are used for Control of Automobile cooling fan of engine rotating speed.The invention still further relates to the production method and the controlling method of above-mentioned two fast electromagnetic fan clutch.

Background technique

At present, the electromagnetic fan clutch that uses on the automobile is that the water temperature according to motor changes the rotating speed of controlling fan, thereby makes motor car engine in running, keep the optimum state.Specifically be through the coil of control on the electromagnetic core the electric or outage adhesive that comes adhesive dish and drive plate on controlling magnet fixed tray or the fan fixed disk with separate; Thereby the rotating speed of fan on the control fan fixed disk reaches and makes fan give the motor cool effect with suitable rotating speed.

Existing electromagnetic fan clutch (is example with the three-speed electromagnetic fan clutch) is 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 ', big adhesive dish 35 ' and guard plate 36 '; The drive plate of wherein being processed by permeability magnetic material 2 ' is fixedly mounted on the main shaft 1 ' through woodruff 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 installed on the main shaft 1 ' through bearing 5 '; Be respectively equipped with inside and outside coil embedding groove in the electromagnetic core 3 ', the magnetic conduction opening direction of inside and outside coil inserting slot is all identical with main shaft 1 ' axial direction and point to the side of drive plate 2 ', is provided with inside and outside coil 4b ', 4a ' with flat winding respectively in the inside and outside coil embedding groove; Fan fixed disk 9 ' is installed on the main shaft 1 ' through bearing 8 ', 11 ' respectively with magnet fixed disc 10 '; Wherein magnet fixed disc 10 ' is positioned at fan fixed disk 9 ' inner chamber, on a side end face of magnet fixed disc 10 ', is uniformly distributed with several fixed holes along the circumference and is used for inlaying soft magnet 15 ', picks permanent magnet 14 ' on the soft magnet 15 '; Fan fixed disk 9 ' goes up on the corresponding end face with permanent magnet 14 ' and is inlaid with soft magnet 16 '; Magnet fixed disc 10 ' is gone up on the annular end face relative with interior loop 4b ' has little adhesive dish 13 ' through the 12 ' support and connection of submissile reed, through the 34 ' support and connection of big spring sheet big adhesive dish 35 ' is arranged on the annular end face relative with exterior loop 4a ' on the fan fixed disk 9 ', and large and small adhesive dish 13 ', 35 ' is all near the side of drive plate 2 '; With gapped between the corresponding end face of drive plate 2 '; Be fixedly connected guard plate 36 ' on the circumferential position outside end face of fan fixed disk 9 ', offer locking hole on the guard plate 36 ', the circumferential position outside of drive plate 2 ' is gone up and the corresponding position of locking hole offers matching hole.

The concrete working procedure of above-mentioned three-speed electromagnetic fan clutch is: when engine temperature does not reach the low set temperature value (such as being made as 82 ℃) of three-speed electromagnetic fan clutch as yet; Inside and outside coil 4b ' in the electromagnetic core 3 ', 4a ' be no electric circuit all; The little adhesive dish 13 ' of drive plate 2 ' on can adhesive magnet fixed disc 10 '; The also big adhesive dish 35 ' on the not adhesive fan fixed disk 9 '; Fan fixed disk 9 ' is freely trackslipped through bearing 8 ', and magnet fixed disc 10 ' freely trackslips through bearing 11 '; When engine temperature reaches low set temperature value (82 ℃) and is lower than higher set temperature value (such as being made as 88 ℃); Interior loop 4b '; Make little adhesive dish 13 ' and drive plate 2 ' rotation synchronously by the little adhesive dish 13 ' of drive plate 2 ' adhesive because the magnetic effect of electromagnetic core 3 ' makes, little adhesive dish 13 ' drives magnet fixed disc 10 ' rotation at full speed through submissile reed 12 '; Be embedded in rotation relatively in the magnetic field that soft magnet 16 ' in the fan fixed disk 9 ' permanent magnet 14 ' in magnet fixed disc 10 ' and soft magnet 15 ' form; Cutting magnetic line, himself produces foucault current, and foucault current produces new magnetic field; Realize that under the effect of magnetic force fan fixed disk 9 ' and magnet fixed disc 10 ' flexibly connect the middling speed rotation, play the effect of preliminary radiating and cooling; When engine temperature is elevated to higher temperature setting value (88 ℃); Exterior loop 4b '; Produce the suction-combining force, to drive plate 2 ', big adhesive dish 35 ' is with drive plate 2 ' rotation synchronously with big adhesive dish 35 ' adhesive; Big adhesive dish 35 ' drives fan fixed disk 9 ' rotation at full speed through big spring sheet 34 ', thereby plays the effect of powerful cooling.

But; Vehicle in the process of moving; If the power supply system catastrophic failure sudden power of electromagnetic fan clutch; Then inside and outside coil 4b ', 4a ' act on inefficacy, this moment just can not through the energising of controlling inside and outside coil 4b ', 4a ' cut off the power supply control the fan blade on the fan fixed disk 9 ' rotating speed to have lowered the temperature to motor.Certainly; Usually the guard plate 36 ' that the urgent lock bolt that has in the former project organization of electromagnetic fan clutch and carry with car is used and corresponding locking hole, matching hole; After can breaking down in the power supply system of electromagnetic fan clutch, the driver stops as early as possible; Then urgent lock bolt is inserted in the locking hole and the matching hole on the drive plate 2 ' on the guard plate 36 ', so that fan fixed disk 9 ' and drive plate 2 ' rotation are synchronously rotated fan at full speed motor is lowered the temperature.If the driver learns that when driving power supply system breaks down, the back of can stopping uses urgent lock bolt that fan fixed disk 9 ' is fixing with drive plate 2 ', makes fan rotate cooling at full speed; Yet the driver often can't guarantee to learn failure condition in the very first time, thereby the urgent lock bolt of employing that can not in time stop, and the urgent lock bolt of installation that stops also bothers; Even the driver can learn the power supply system fault in the very first time; But the road conditions of automobile actual motion are complicated and changeable; The driver can not be stopped under some specific run environment, perhaps can't stop to take bolt locking measure at once, may therefore cause engine high-temperature to damage or even scraps; Under the serious situation even can therefore cause traffic accident, consequence is hardly imaginable.In addition, as shown in Figure 1, when engine water temperature is elevated to higher temperature setting value (88 ℃); In order to satisfy: exterior loop 4a ' can make electromagnetic core 3 ' have enough big magnetic after electric; Big adhesive dish 35 ' adhesive being fixedly connected with fan fixed disk 9 ' is arrived on the drive plate 2 ', and can drive fan fixed disk 9 ' and drive plate 2 ' speed rotation together, just needs motor lasting electric power to be provided for exterior loop 4a '; So not only consumed more electric energy; And increased the loss of engine power, make the motor overload operation more that just is in the condition of high temperature originally, the working life of having reduced motor.

At present; The air pump device that is used for brake and drive system for vehicle with tow; In the vehicle driving process, be to utilize the energising of magnetic clutch or the work that air pump is controlled in outage, when the air pump internal pressure is lower than the required force value of brake system work (such as the 6-8 kilogram); The power supply system of magnetic clutch is given; The parts that utilize the suction-combining force of electromagnetic core will drive air pump rotating shaft running link to each other with pivoted pulley (belt pulley passes through engine drives), make air pump rotating shaft and belt pulley run-in synchronism, thereby reach the purpose that makes air pump in running order; When the air pump internal pressure meets or exceeds the required force value of brake system work (such as the 6-8 kilogram), the outage of the power supply system of magnetic clutch, the air pump rotating shaft separates with belt pulley, and air pump quits work.Yet, break down sudden outage if in the vehicle driving process, run into the power supply system of magnetic clutch; Perhaps other faults appear in magnetic clutch; The uncontrollable air pump work of magnetic clutch this moment so influences the effect performance of air pump, causes the brake system cisco unity malfunction; And then may bring a series of serious consequence, can not give safety guarantee of driver; Certainly, the safeguard construction that prevents that the air pump control system lost efficacy is installed also on the existing part vehicle, but the use of these safeguard constructions all needs parking, and manually launch anti-failure structure, thereby have certain narrow limitation.

Summary of the invention

In order to solve the problems of the technologies described above, the present invention provide a kind of simple in structure, safe and reliable, can prevent that the fan fixed disk that causes because of magnetic clutch catastrophic failure in the driving process can not be to the safety type electromagnetic fan clutch device of motor cooling.

Another technical purpose of the present invention provides above-mentioned production method with electromagnetic fan clutch of anti-Fail safe device.

Another technical purpose of the present invention provides above-mentioned controlling method with electromagnetic fan clutch of anti-Fail safe device.

A kind of electromagnetic fan clutch; Comprise transmission shaft, drive plate, fan fixed disk and magnet fixed disc; Said drive plate is fixedly mounted on the said transmission shaft; Said fan fixed disk is installed on the said transmission shaft through clutch shaft bearing, and said magnet fixed disc is fixedly mounted on the said transmission shaft, and said magnet fixed disc is used for driving the transfer of said fan fixed disk differential through magnetic effect; Also comprise first transmission device, second transmission device and first electric controller; Said second transmission device is fixedly connected with said fan fixed disk, and when said first electric controller gets when electric, said first electric controller drives said first transmission device makes said second transmission device and said drive plate be separated; When first electric controller cut off the power supply, said first electric controller drives said first transmission device made said second transmission device engage with said drive plate.

The invention difference from existing technology is: electromagnetic fan clutch of the present invention has increased safety installations on the basis of existing electromagnetic fan clutch; I.e. first transmission device and second transmission device; Adopt this structure; Can with to the motor cooling, guarantee that motor keeps optimum Working according to the rotation (being differential transfer or rotation at full speed) that the different temperatures control fan fixed disk of motor is carried out two kinds of friction speeds guaranteeing above-mentioned electromagnetic fan clutch; Guarantee simultaneously that when power supply system is cut off the power supply fan can rotate to the motor cooling at full speed, prevent under power supply system catastrophic failure situation that motor can not in time dispel the heat and to cause its temperature too high.And the present invention is designed to: when first electric controller cut off the power supply, drive plate can be with transmission of power to the second transmission device, thereby needn't expend the effect that too much electric energy just can reach transmission, has practiced thrift electric energy, has prolonged the life-span of power supply system and power supply line.

A kind of electromagnetic fan clutch of the present invention, wherein said second transmission device comprises transmission cylinder.Adopt transmission cylinder to carry out transmission, make processing simply, transmission is effective, and is easy for installation.

A kind of electromagnetic fan clutch of the present invention, wherein said first transmission device comprises at least one driver blade.Between drive plate and transmission cylinder, adopt the driver blade structure; So that drive plate and transmission cylinder can be controlled driver blade with outage by getting of first electric controller is electric; Motion through the control driver blade reaches the purpose that control transmission cylinder and the power of drive plate are separated or combine; And adopt driver blade simple as first transmission device manufacturing processing, cost is low, and transmission is effective; Adopt at least one driver blade, make that in use other driver blades can continue to play the effect of transmission, have ensured the whole transmission effect of driver blade well in case driver blade lost efficacy or transmission effect when reducing.

A kind of electromagnetic fan clutch of the present invention, wherein the structure of the first transmission device driver blade, the second transmission device transmission cylinder and first electric controller and position relation can adopt following two kinds of forms:

(1) wherein said driver blade is three arc-like sheets, and the circumferential position outside of said drive plate is provided with three groups of projections, and said three driver blades are hinged on the complementary protuberance of said drive plate through bearing pin; Said transmission cylinder has the opposing end surface with said drive plate in the circumferential position outside of said drive plate, gapped between the opposing end surface of said driver blade and said transmission cylinder; Said first electric controller comprises the electromagnet assembly of being made up of electromagnetic core and coil, and said electromagnet assembly is positioned at the inner chamber of the circumferential position place end face of said drive plate.Adopt three arc driver blades to be hinged on the drive plate circumferential position outside through bearing pin, install simply, transmission is effective, makes easy; Transmission cylinder is located at the certain interval position, the circumferential position outside of drive plate, makes that driver blade can compress transmission cylinder under centrifugal action when coil blackout, and transmission is effective, and cost is low; And utilize centrifugal force rather than supply with the effect that power reaches transmission specially, practiced thrift the energy.

(2) wherein said transmission cylinder has the opposing end surface with said drive plate in the circumferential position of the said drive plate outside; The said opposing end surface of said transmission cylinder is provided with three groups of projections; Said driver blade is three arc-like sheets, and said three driver blades are hinged on the complementary protuberance of said transmission cylinder through bearing pin; Gapped between the opposing end surface of said driver blade and said drive plate; Said first electric controller comprises permanent magnet and the electromagnet assembly of being made up of electromagnetic core and coil, and said permanent magnet is positioned at the inner chamber of said drive plate, and said electromagnet assembly is positioned at the said opposing end surface outside of said transmission cylinder; When said coil get said electromagnetic core when electric to the magnetic attraction of said driver blade greater than the magnetic attraction of said permanent magnet to said driver blade.Adopt permanent magnet and electromagnet assembly to control the motion of driver blade jointly as first electric controller; And correspondingly driver blade is installed on the inner side end of transmission cylinder; It is a kind of distortion to structure in above-mentioned (1); This structure also can realize initiatively making coil blackout or under coil accident power-off situation, can be through the first transmission device driver blade and the second transmission device transmission cylinder with the transmission of power of drive plate to fan fixed disk; And the permanent magnet in the said structure is to utilize self proper property to play the adhesive effect and needn't expend the electric power that provides specially, has reduced power consumption, has practiced thrift the energy.

A kind of electromagnetic fan clutch of the present invention, the opposing end surface place with said transmission cylinder on the wherein said driver blade is fixedly connected with the arc friction plate.Be employed in the structure that connects friction plate on the driver blade, make that the transmission effect of driver blade is better, working life is longer.

The production method of a kind of electromagnetic fan clutch of the present invention may further comprise the steps:

(a) form transmission shaft, fan fixed disk, magnet fixed disc and first electric controller;

(b) form drive plate;

(c) form first transmission device;

(d) form second transmission device;

(e) first transmission device and first electric controller are installed; Said drive plate is fixedly mounted on the said transmission shaft; Said magnet fixed disc is fixedly mounted on the said transmission shaft, said second transmission device is fixed on the said fan fixed disk, said fan fixed disk is installed on the said transmission shaft through clutch shaft bearing; Said magnet fixed disc can drive the transfer of said fan fixed disk differential, makes:

When said first electric controller gets when electric, said first electric controller drives said first transmission device makes said second transmission device and said drive plate be separated;

When first electric controller cut off the power supply, said first electric controller drives said first transmission device made said second transmission device engage with said drive plate.

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

(1) first electric controller in the said step (a) is the electromagnet assembly of being made up of electromagnetic core and coil, said electromagnet assembly is installed in the inner chamber of the circumferential position place end face of said drive plate; The circumferential position outside of the said drive plate in the said step (b) has three groups of projections, and said first transmission device in the said step (c) is three arc driver blades, is hinged on said three driver blades on the complementary protuberance of said drive plate through bearing pin; Second transmission device in the said step (d) is a transmission cylinder, has the opposing end surface with the said drive plate circumferential position outside after said transmission cylinder is installed, and is gapped between the opposing end surface of said driver blade and said transmission cylinder.

(2) first transmission device in the said step (c) is three arc driver blades; Second transmission device in the said step (d) is a transmission cylinder; After installing, said transmission cylinder has opposing end surface with the said drive plate circumferential position outside; The said opposing end surface inboard of said transmission cylinder has three groups of projections; Said three arc driver blades are hinged on through bearing pin on the complementary protuberance of said transmission cylinder, gapped between the end face of the circumferential position of said three arc driver blades and the said drive plate outside; First electric controller in the said step (a) is permanent magnet and the electromagnet assembly be made up of electromagnetic core and coil, and said permanent magnet is installed in the inner chamber of said drive plate, said electromagnet assembly is arranged on the said opposing end surface outside of said transmission cylinder; When said coil get said electromagnetic core when electric to the magnetic attraction of said driver blade greater than the magnetic attraction of said permanent magnet to said driver blade.

Adopt above-mentioned production method; Reduce the quality of electromagnetic fan clutch as much as possible, save material, improve the precision of each constituent elements; Simplify each modular construction and annexation; Guarantee good transmission effect, realize break-make electric control transmission, and guarantee that fan fixed disk in the above-mentioned electromagnetic fan clutch can be rotated to motor at full speed lower the temperature when first electric controller cuts off the power supply.

A kind of controlling method of the present invention to above-mentioned electromagnetic fan clutch, step comprises:

When engine water temperature is lower than first setting value, make first electric controller (104; 404);

When engine water temperature is equal to or higher than first setting value, make first electric controller (104; 404) outage.

Adopt above-mentioned controlling method, be that the cooling of motor during according to automobilism needs, according to the water temperature of motor control first electric controller electric and outage, and guarantee that fan fixed disk can be rotated to motor when first electric controller cuts off the power supply and lower the temperature.

Below in conjunction with accompanying drawing embodiments of the invention are described further.

Description of drawings

Fig. 1 looks sectional view for the master of three-speed electromagnetic fan clutch of the prior art;

Fig. 2 looks sectional view for embodiment one master;

Fig. 3 is along the sectional view of A-A line direction among Fig. 2;

Fig. 4 is the stereogram of the drive plate among the embodiment one;

Fig. 5 is the stereogram of the driver blade among the embodiment one;

Fig. 6 a and Fig. 6 b are the stereogram of the electromagnetic core among the embodiment one;

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

Fig. 8 is that the B of Fig. 7 is to view.

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

Figure 10 is along the sectional view of C-C line direction among Fig. 9;

Figure 11 looks sectional view for embodiment two master;

Figure 12 looks sectional view for embodiment three master;

Figure 13 is along the sectional view of D-D line direction among Figure 12;

Figure 14 is the stereogram of the drive plate among the embodiment three;

Figure 15 is the stereogram of the electromagnetic core among the embodiment three;

Figure 16 is the right elevation that the drive plate among the embodiment three cooperates with driver blade;

Figure 17 is that the E of Figure 16 is to view;

Figure 18 looks sectional view for embodiment four master;

Figure 19 looks sectional view for embodiment five master;

Figure 20 is along the sectional view of F-F line direction among Figure 19;

Figure 21 is the right elevation that the drive plate among the embodiment five cooperates with driver blade;

Figure 22 is that the G of Figure 21 is to view;

Figure 23 looks sectional view for the master of the transmission cylinder among the embodiment five;

Figure 24 is along the sectional view of H-H line direction among Figure 23;

Figure 25 looks sectional view for embodiment six master.

Embodiment

Being applied in electromagnetic fan clutch and the air pump on the automobile with the electromagnetic gear of being made up of drive plate, first transmission device, second transmission device and first electric controller below is that example combines accompanying drawing to be elaborated; Production method and controlling method to the equipment in each mode of execution is illustrated simultaneously; Wherein embodiment one is applied to the mode of execution in single speed, two speed, the three-speed electromagnetic fan clutch to three respectively for above-mentioned electromagnetic gear, and wherein first electric controller and second electric controller all include only electromagnetic core and coil; Embodiment four is to be example with the single speed electromagnetic fan clutch, first electric controller is comprised the mode of execution of electromagnetic core, coil and permanent magnet describes; Embodiment five, six is applied to the mode of execution in the air pump for above-mentioned electromagnetic gear, and wherein first electric controller among the embodiment five includes only electromagnetic core and coil, and first electric controller among the embodiment six comprises electromagnetic core, coil and permanent magnet.

Embodiment one

As shown in Figure 2; A kind of electromagnetic gear comprises drive plate 102 (as shown in Figure 4), also comprises first transmission device; Second transmission device and first electric controller; Like Fig. 3, Fig. 7, shown in Figure 8, wherein first transmission device comprises that 106, three driver blades 106 of three driver blades are hinged on the projection 117 on drive plate 102 circumferential positions through bearing pin 124; Driver blade 106 be shaped as arc (as shown in Figure 5), the outer surface of driver blade 106 is provided with one deck and is bonded in the arc friction plate 106a on the driver blade 106 through compacting; Second transmission device is transmission cylinder 107 (like Fig. 9, shown in Figure 10), and transmission cylinder 107 has the opposing end surface with drive plate 102 in the circumferential position outside of drive plate 102, gapped between transmission cylinder 107 and the friction plate 106a; First electric controller comprises the electromagnet assembly of being made up of electromagnetic core 103 and coil 104; Electromagnet assembly is positioned at drive plate 102 inner chambers; Wherein electromagnetic core 103 is installed on the transmission shaft 101 through second bearing 105, and electromagnetic core 103 is flexible coupling through fixedly sebific duct and engine body, and drive plate 102 and driver blade 106 are processed by permeability magnetic material; Like Fig. 2, shown in Figure 4, the circumferential position of drive plate 102 is provided with 6 groups of magnet isolation tanks 122.

Like Fig. 4, Fig. 7, shown in Figure 8; The circumferential position outside of drive plate 102 is provided with three projections 117; Be evenly distributed on the circumferential position of drive plate 102; Three driver blades 106 124 are hinged on three projections 117 through pinning, driver blade 106 can through pin 124 do away from or near the rotation of drive plate 102 circumferential positions.

Also comprise passive device; Passive device is a fan fixed disk 109; As shown in Figure 1, fan fixed disk 109 is installed on the transmission shaft 101 through clutch shaft bearing 108, in conjunction with Fig. 9, shown in Figure 10; Three groups of fixed plates 120 on transmission cylinder 107 1 ends are fixed on the fan fixed disk 109 through clamping bolt 118; Drive plate 102 is fixedly mounted on the transmission shaft 101 through woodruff key 119, and electromagnetic core 103 is installed on the transmission shaft 101 through second bearing 105 at the inner chamber of drive plate 102, shown in Fig. 6 a, Fig. 6 b; Coil 104 is located in the coil embedding groove 103a that offers on the electromagnetic core 103, and the magnetic conduction opening direction of coil embedding groove 103a points to the circumferential position of drive plate 102.

When first electric controller (coil 104) when electric; First electric controller (electromagnetic core 103 with magnetic attraction) drives first transmission device (outer surface is bonded with the driver blade 106 of friction plate 106a) and makes second transmission device (transmission cylinder 107) and the power of drive plate 102 be separated (driver blade 106 is pull-in on the end face outside, circumferential position place of drive plate 102, does not engage with transmission cylinder 107); When first electric controller (coil 104) cut off the power supply, first electric controller (electromagnetic core 103 that does not have magnetic attraction) drives first transmission device (outer surface is bonded with the driver blade 106 of friction plate 106a) made second transmission device (transmission cylinder 107) engage (driver blade 106 that is hinged on the drive plate 102 compresses transmission cylinder 107 through friction plate 106a under centrifugal action) with the power of drive plate 102.

As shown in Figure 2, the concrete working procedure of a kind of electromagnetic gear of the present invention in the single speed electromagnetic fan clutch is following:

Behind the engine start, 101 rotations of engine drives main shaft, main shaft 101 drives drive plate 102 rotation at full speed through woodruff key 119.

When engine water temperature does not reach 82 ℃ of first setting values of temperature detect switch (TDS) 125 as yet; Temperature detect switch (TDS) 125 controls make the circuit of coil 104 be in on-state; This moment, the radially adhesive magnetic field of electromagnetic core 103 generations firmly was pull-in on the driver blade 106 that is connected with friction plate 106a on the drive plate 102; Friction plate 106a and transmission cylinder 107 do not come in contact, and fan fixed disk 109 and coupled transmission cylinder 107 freely trackslip through clutch shaft bearing 108.

When water temperature is elevated to 82 ℃ of first setting values of temperature detect switch (TDS) 125; The circuit of coil 104 is broken off in temperature detect switch (TDS) 125 controls; Three driver blades 106 compress transmission cylinder 107 through friction plate 106a under action of centrifugal force; Transmission cylinder 107 and drive plate 102 are reached with the speed rotation, and transmission cylinder 107 drives the fan rotation on the fan fixed disk 109, reaches powerful cool effect; If automobile power supply system catastrophic failure in the process of moving causes coil 104 outages; Then electromagnetic core 103 do not have magnetic can three driver blades 106 of adhesive; Three driver blades 106 compress transmission cylinder 107 through friction plate 106a under centrifugal action reach with the speed rotation, to reach same powerful cooling-down effect transmission cylinder 107 and drive plate 102.

The present invention may further comprise the steps the production method of above-mentioned electromagnetic gear (being applied in the single speed electromagnetic fan clutch): (a) cast drive plate 102 and carry out machining, the circumferential position outside of drive plate 102 has three groups of projections 117; (b) casting first transmission device, i.e. three arc driver blades 106, and carry out machining; (c) casting second transmission device, promptly transmission cylinder 107, and carry out machining; (d) casting in first electric controller electromagnetic core 103 and carry out machining, coil 104 is loaded in the coil embedding groove 103a on the electromagnetic core 103 with flat winding; (e) drive plate 102 is installed on the transmission shaft 101 through woodruff key 119; Be hinged on three driver blades 106 on the complementary protuberance 117 of drive plate 102 through bearing pin 124; Electromagnetic core 103 is installed on the transmission shaft 101 through second bearing 105 and is positioned at the inner chamber of drive plate 102 circumferential positions places end face; Fan fixed disk 109 (passive device) is installed on the transmission shaft 101 through clutch shaft bearing 108; Utilize bolt to be installed on the fan fixed disk 109 through three groups of fixed plates 120 transmission cylinder 107; After installing, transmission cylinder 107 has the opposing end surface that belongs to the end face outside with drive plate 102 circumferential positions, and gapped between the opposing end surface of driver blade 106 and transmission cylinder 107, make after the installation:

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

When coil 104 outages; Electromagnetic core 103 not adhesive driver blades 106; Driver blade 106 compresses transmission cylinder 107 under action of centrifugal force; Make transmission cylinder 107 engage, thereby make drive plate 102 drive fan fixed disk 109 and rotate through driver blade 106, transmission cylinder 107 through the power of driver blade 106 with drive plate 102.

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

When engine water temperature is lower than 82 ℃ of first setting values, the circuit of temperature transducer 125 control closing coils 104, coil 104 electric, electromagnetic core 103 has magnetic;

When engine water temperature reached 82 ℃ of first setting values or continues to raise, the circuit of coil 104 was broken off in temperature transducer 125 controls, coil 104 outages, and electromagnetic core 103 does not have magnetic.

Embodiment two

Shown in figure 11; Under the constant prerequisite of other structures in the embodiment shown in Fig. 2-10 one; Two fast electromagnetic fan clutch in the present embodiment and embodiment one difference structure are: also comprise magnet fixed disc 210; Magnet fixed disc 210 is positioned at fan fixed disk 209 inner chambers, and is installed on the transmission shaft 201 through drive sleeve 233, and the opposing end surface position with fan fixed disk 209 on the magnet fixed disc 210 is inlaid with some first soft irons 215; Magnetic is adsorbed with permanent magnet 214 on first soft iron 215, is inlaid with second soft iron 216 at the corresponding position with permanent magnet 214 on the fan fixed disk 209.

Shown in figure 11, the concrete working procedure of a kind of electromagnetic gear of the present invention in two fast electromagnetic fan clutch is following:

Behind the engine start, 201 rotations of engine drives main shaft, main shaft 201 drives drive plate 202 rotation at full speed through woodruff key 219, and main shaft 201 drives magnet fixed disc 210 rotation at full speed through drive sleeve 233 simultaneously.

When engine water temperature does not reach 82 ℃ of first setting values of temperature detect switch (TDS) 225 as yet; Temperature detect switch (TDS) 225 controls make the circuit of coil 204 be in on-state; Electromagnetic core 203 produce adhesive magnetic field radially three driver blades, the 206 firm adhesives that are connected with friction plate 206a to drive plate 202; Friction plate 206a and transmission cylinder 207 do not come in contact, thereby can not drive fan fixed disk 209 rotations; Meanwhile; The rotation relatively in the magnetic field of permanent magnet 214 and 215 formation of first soft iron of second soft iron 216, second soft iron, 216 cutting magnetic lines produce foucault current, and foucault current produces new magnetic field; Realize that under the effect of magnetic force magnet fixed disc 210 drives fan fixed disk 209 differential transfers; That is: fan fixed disk 209 flexibly connects the middling speed rotation with magnet fixed disc 210, plays the effect of preliminary radiating and cooling, makes motor car engine keep suitable operating temperature.

When engine water temperature is elevated to 82 ℃ of first setting values of temperature detect switch (TDS) 225; The circuit of coil 204 is broken off in temperature detect switch (TDS) 225 controls; Three driver blades 206 compress transmission cylinder 207 through three friction plate 206a under action of centrifugal force; Transmission cylinder 207 and drive plate 202 are reached with the speed rotation, and transmission cylinder 207 drives the fan rotation on the fan fixed disk 209, reaches powerful cool effect; If automobile power supply system catastrophic failure in the process of moving causes coil 204 outages; Then since coil 204 outage electromagnetic cores 203 do not have magnetic can adhesive driver blade 206; Three driver blades 206 compress transmission cylinder 207 through three friction plate 206a under action of centrifugal force; Transmission cylinder 207 and drive plate 202 are reached with the speed rotation, and transmission cylinder 207 drives the fan rotation on the fan fixed disk 209, to reach same powerful cooling-down effect.

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

The position of permanent magnet 214, first soft iron 215 and second soft iron 216 on magnet fixed disc 210 and the fan fixed disk 209 is not limited to above-mentioned situation; As long as can reach through magnetic effect makes magnet fixed disc 210 drive fan fixed disk 209 transfers; Such as can first soft iron 215 being located on the fan fixed disk 209 with permanent magnet 214, second soft iron 216 is located on the magnet fixed disc 210.

The present invention is to the production method of above-mentioned electromagnetic gear (being applied in the two fast electromagnetic fan clutch); Basic identical with the production method among the embodiment one; Difference is: casting magnet fixed disc 210 also carries out machining; Fan fixed disk 209 (passive device) is being installed before; At first magnet fixed disc 210 is fixedly mounted on the transmission shaft 201 through drive sleeve 233, is positioned at fan fixed disk 209 inner chambers, the end face that is inlaid with second soft iron 216 on the end face that is inlaid with first soft iron 215 and permanent magnet 214 on the magnet fixed disc 210 and the fan fixed disk 209 is corresponding.

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

Embodiment three

Shown in figure 12; Under the constant prerequisite of other structures in the embodiment shown in Figure 11 two; Three-speed electromagnetic fan clutch in the present embodiment and embodiment's one difference structure is: magnet fixed disc 310 is installed on the drive plate 302 through the 3rd bearing 311 (replacing the drive sleeve 233 among the embodiment two); Offer inside and outside coil embedding groove 303a, 303b (shown in figure 15) on the electromagnetic core 303; Exterior loop 304a (first electric controller; Effect is equal to the coil 204 among the embodiment two) be located in the 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, and interior loop 304b (second electric controller) is located in the interior loop embedding groove 303b, and the magnetic conduction opening direction of interior loop embedding groove 303b points to magnet fixed disc 310 vertically; Corresponding position with interior loop 304b on the magnet fixed disc 310 has little adhesive dish 313 through 312 support and connection of submissile reed, little adhesive dish 313 near drive plate 302 and with the corresponding end face of drive plate 302 between gapped.When interior loop 304b (second electric controller) when electric; Electromagnetic core 303 produces axial magnetic suction; Electromagnetic core 303 through drive plate 302 with little adhesive dish 313 adhesives to drive plate 302; Make magnet fixed disc 310 engage with drive plate 302, the power of drive plate 302 directly is passed to magnet fixed disc 310.

Shown in figure 14; Magnet isolation tank 323 in the side of drive plate 302 offers 6 groups offers 6 groups of outer magnet isolation tanks 322 on the circumferential position place end face of drive plate 302, and is shown in figure 13; The outer surface of driver blade 306 is provided with one deck and is bonded in the friction plate 306a on the driver blade 306 through compacting; Friction plate 306a has bigger friction factor can drive transmission cylinder 307 rotations, and the apparent surface with friction plate 306a on the transmission cylinder 307 does Wear-resistant Treatment, so that the transmission better effects if between friction plate 306a and the transmission cylinder 307; When exterior loop 304a cuts off the power supply; Driver blade 306 can compress transmission cylinder 307 through friction plate 306a under action of centrifugal force, and drives fan fixed disk 309 rotation at full speed through transmission cylinder 307, to reach to motor full speed cool effect.

Like Figure 16, shown in Figure 17, the circumferential position of drive plate 302 outside is provided with three projections 317, is evenly distributed on the circumferential position of drive plate 302, and three driver blades 306 324 are hinged on three projections 317 through pinning.

Shown in figure 12, the concrete working procedure of a kind of electromagnetic gear of the present invention in three-speed electromagnetic fan clutch is following:

Behind the engine start, 301 rotations of engine drives main shaft, main shaft 301 drives drive plate 302 rotation at full speed through woodruff key 319.

When engine water temperature does not reach 82 ℃ of second setting values of temperature detect switch (TDS) 325 as yet; Temperature detect switch (TDS) 325 controls are given connection to external call and are enclosed the circuit of 304a; Electromagnetic core 303 produce adhesive magnetic field radially three driver blades, the 306 firm adhesives that are connected with friction plate 306a to drive plate 302, three friction plate 306a and transmission cylinder 307 do not come in contact, fan fixed disk 309 is freely trackslipped through clutch shaft bearing 308; Interior loop 304b keeps off-position; The little adhesive dish 313 of drive plate 302 not adhesives, drive plate 302 keeps the phase-separated state with magnet fixed disc 310, and magnet fixed disc 310 freely trackslips through the 3rd bearing 311.

When engine water temperature is elevated to 82 ℃ of second setting values of temperature detect switch (TDS) 325; The circuit of interior loop 304b is connected in temperature detect switch (TDS) 325 controls; Electromagnetic core 303 produces axial the suction-combining force; To inhale and close dish 313 adhesives for a short time and to drive plate 302, rotate synchronously with drive plate 302, little adhesive dish 313 drives magnet fixed discs 310 rotations through submissile reed 312, and second soft iron 316 that is embedded in the fan fixed disk 307 rotates in the magnetic field of permanent magnet 314 and 315 formation of first soft iron relatively; Second soft iron, 316 cutting magnetic lines produce foucault current; Foucault current produces new magnetic field, realizes that under the effect of magnetic force magnet fixed disc 310 drives fan fixed disk 309 differential transfers, that is: fan fixed disk 309 flexibly connects the middling speed rotation with magnet fixed disc 310; Play the effect of preliminary radiating and cooling, make motor car engine keep suitable operating temperature.

If engine water temperature continues to be elevated to 88 ℃ of the 3rd setting values of temperature detect switch (TDS) 325; The power supply of exterior loop 304a is broken off in temperature detect switch (TDS) 325 controls; Three driver blades 306 compress transmission cylinder 307 through three friction plate 306a under action of centrifugal force reach with the speed rotation transmission cylinder 307 and drive plate 302; Transmission cylinder 307 drives the fan rotation on the fan fixed disk 309, reaches powerful cool effect.

If automobile power supply system catastrophic failure in the process of moving causes exterior loop 304a outage; Then since exterior loop 304a outage electromagnetic core 303 do not have magnetic can adhesive driver blade 306; Three driver blades 306 compress transmission cylinder 307 through friction plate 306a under action of centrifugal force; Transmission cylinder 307 and drive plate 302 are reached with the speed rotation, to reach same powerful cooling-down effect.

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

Adopt said structure; Not only can realize three speed coolings; Guaranteed that also fan fixed disk can be rotated cooling under the burst powering-off state; Prevent that engine temperature is too high, this device can prevent in the existing technology fan stall of losing efficacy and causing because of magnetic clutch, thereby more secure and reliable to use.

The present invention is to the production method of above-mentioned electromagnetic gear (being applied in the three-speed electromagnetic fan clutch); Basic identical with the production method among the embodiment two (wherein coil 204 roles among exterior loop 304a and the embodiment two are identical); Difference is: magnet fixed disc 310 is installed on the transmission shaft 301 through the 3rd bearing 311; Increased by second electric controller (the interior loop 304b; Be located on the electromagnetic core 303), the corresponding position with interior loop 304b on the magnet fixed disc 310 has little adhesive dish 313 through 312 support and connection of submissile reed.

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

When engine water temperature is lower than 82 ℃ of second setting values; Temperature transducer 325 controls are given connection to external call and are enclosed the circuit of 304a; Control interior loop 304b simultaneously and keep off-position; The end face that points to drive plate 302 circumferential positions on the electromagnetic core 303 has magnetic, and the end face that points to little adhesive dish 313 does not have magnetic;

When engine water temperature is equal to or higher than 82 ℃ of second setting values and be lower than 88 ℃ of the 3rd setting values; Temperature transducer 325 control exterior loop 304a keep electricity condition; Controlling interior loop 304b simultaneously gets; The end face that points to drive plate 302 circumferential positions on the electromagnetic core 303 has magnetic, and the end face that points to little adhesive dish 313 also has magnetic;

When engine water temperature is equal to or higher than 88 ℃ of the 3rd setting values; Temperature transducer 325 control exterior loop 304a outage is controlled interior loop 304b simultaneously and is got electricly, and the end face that points to drive plate 302 circumferential positions on the electromagnetic core 303 does not have magnetic; Driver blade 306 compresses transmission cylinder 307 under centrifugal action; Drive fan fixed disk 309 rotation at full speed, this moment, no matter whether magnet fixed disc 310 rotated, and fan fixed disk 309 all can be rotated at full speed; Thereby this moment control interior loop 304b and get electric or when meeting the accident power-off situation, this transmission device all can make fan fixed disk 309 rotation at full speed.

Embodiment four

Shown in figure 18; Under the constant prerequisite of other structures in the embodiment shown in Fig. 2-10 one; Single speed electromagnetic fan clutch in the present embodiment and embodiment one difference structure are: first electric controller comprises permanent magnet 403c and the electromagnet assembly of being made up of electromagnetic core 403 and coil 404; Permanent magnet 403c is positioned at the inboard of transmission cylinder 407; The particular location of permanent magnet 403c is shown in figure 18 to be installed on the transmission shaft 401 through second bearing 405, and is positioned at the inner chamber of drive plate 402, and it is magnetic pole that permanent magnet 403c goes up the end face that points to drive plate 402 circumferential positions; Electromagnet assembly 403,404 is positioned at the outside of transmission cylinder 407, and electromagnetic core 403 is through fixedly sebific duct and engine body are flexible coupling; First transmission device comprises three driver blades 406; Driver blade 406 is rotatably connected on the transmission cylinder 407 on the opposing end surface with drive plate 402; Driver blade 406 be shaped as arc; The internal surface of driver blade 406 is provided with one deck and is bonded in the arc friction plate 406a on the driver blade 406 through compacting, but driver blade 406, transmission cylinder 407, drive plate 402 equal magnetic conductions, when coil 404 when electric the magnetic attraction of 403 pairs of driver blades 406 of electromagnetic core greater than the magnetic attraction of permanent magnet 403c to driver blade 406.

Shown in figure 18; Offer some groups of magnet isolation tanks 422 on the circumferential position place end face of drive plate 402; Also offer some groups of magnet isolation tank 407a on the opposing end surface of transmission cylinder 407; 420 is the fixed plate on the transmission cylinder 407, and 417 is the projection on the inner side end on the transmission cylinder 407, is used for through bearing pin 424 driver blade 406 being installed.

Shown in figure 18, the concrete working procedure of electromagnetic gear of the present invention in the single speed electromagnetic fan clutch is following:

Behind the engine start, 401 rotations of engine drives main shaft, main shaft 401 drives drive plate 402 rotation at full speed through woodruff key 419.

When engine water temperature does not reach 82 ℃ of first setting values of temperature detect switch (TDS) 425 as yet; Temperature detect switch (TDS) 425 controls make the circuit of coil 404 be in on-state; This moment coil 404 energized in the electromagnetic core 403; 403 pairs of electromagnetic cores are connected with the magnetic attraction of driver blade 406 of friction plate 406a greater than the magnetic attraction of permanent magnet 403c to corresponding driver blade 406; Thereby the driver blade 406 that is connected with friction plate 406a can firmly be pull-in on the inwall of transmission cylinder 407 under the force action of deflection electromagnetic core 403 sides; Driver blade 406 inboard friction plate 406a and drive plates 402 do not come in contact, and fan fixed disk 409 and coupled transmission cylinder 407 freely trackslip through clutch shaft bearing 408.

When water temperature is elevated to 82 ℃ of first setting values of temperature detect switch (TDS) 425; The circuit of coil 404 is broken off in temperature detect switch (TDS) 425 controls; 403 pairs of driver blades 406 of electromagnetic core this moment do not have magnetic attraction; Three driver blades 406 firmly are being pull-in under the action of a magnetic field of permanent magnet 403c on the circumferential position outside end face of drive plate 402; Thereby make drive plate 402 drive transmission cylinder 407 rotations through three driver blades 406, transmission cylinder 407 drives the fan rotation on the fan fixed disk 409, reaches powerful cool effect.

If automobile power supply system catastrophic failure outage in the process of moving; Then because coil 404 outage electromagnetic cores 403 can three driver blades 406 of adhesive; Three driver blades 406 firmly are being pull-in under the action of a magnetic field of permanent magnet 403c on the circumferential position outside end face of drive plate 402; The fan that makes drive plate 402 drive transmission cylinder 407 through three driver blades 406 and then drive on the fan fixed disk 409 rotates, to reach same powerful cooling-down effect.

Certainly; The particular location of permanent magnet 403c is not limited to second bearing 405 that passes through shown in Figure 18 and is installed on the transmission shaft 401; Also can permanent magnet 403c be embedded on the end face outside, circumferential position place of drive plate 402, perhaps directly adopt permanent magnet material to process drive plate 402.

In the present embodiment; First electric controller in the single speed electromagnetic fan clutch comprises permanent magnet and the mode of execution of the electromagnet assembly be made up of electromagnetic core and coil; Be equally applicable to two fast electromagnetic fan clutch and the three-speed electromagnetic fan clutch among the embodiment three among the embodiment two; When in two speed and three-speed electromagnetic fan clutch, adopting this mode of execution, the remaining part that is connected with first electric controller is structurally made adaptations.

The present invention is to the production method of above-mentioned electromagnetic gear (being applied in the single speed electromagnetic fan clutch); Basic identical with the production method among the embodiment one; Difference is: the opposing end surface inboard of transmission cylinder 407 has three groups of projections 417; Three driver blades 406 are hinged on through bearing pin 424 on the complementary protuberance 417 of transmission cylinder 407, gapped between the end face of the circumferential position of driver blade 406 and drive plate 402 outside; First electric controller in the step (d) is permanent magnet 403c and the electromagnet assembly be made up of electromagnetic core 403 and coil 404; Permanent magnet 403c is installed on the transmission shaft 401 through bearing 405 and is positioned at the inner chamber of drive plate 402; Electromagnet assembly is located at outside the opposing end surface of transmission cylinder 407, electromagnetic core 403 is fixed on the motor body; When coil 404 when electric the magnetic attraction of 403 pairs of driver blades 406 of electromagnetic core greater than the magnetic attraction of permanent magnet 403c to driver blade 406.

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

Embodiment five

Shown in figure 19, a kind of electromagnetic gear comprises that (drive plate 502 is belt pulley to drive plate 502; By its rotation of engine drives); Also comprise first transmission device, second transmission device and first electric controller, wherein first transmission device comprises three driver blades 506; Shown in Figure 20-22; Three driver blades 506 are hinged on the circumferential position of drive plate 502 through bearing pin 524, driver blade 506 be shaped as arc, the outer surface of driver blade 506 is provided with one deck and is bonded in the arc friction plate 506a on the driver blade 506 through compacting; Second transmission device is transmission cylinder 507 (like Figure 23, shown in 24), and transmission cylinder 507 has the opposing end surface with drive plate 502 in the circumferential position outside of drive plate 502, gapped between the opposing end surface of transmission cylinder 507 and the friction plate 506a; First electric controller comprises the electromagnet assembly of being made up of electromagnetic core 503 and coil 504, and electromagnet assembly is positioned at drive plate 502 inner chambers, and drive plate 502, driver blade 506 and transmission cylinder 507 are processed by permeability magnetic material.

Shown in figure 19, also comprise passive device, passive device is air pump rotating shaft 509; Drive plate 502 is installed in the air pump rotating shaft 509 through bearing 502a; Transmission cylinder 507 is fixedly mounted in the air pump rotating shaft 509 through woodruff key 519, and electromagnetic core 503 is fixed on the air pump housing 509a through clamping bolt, offers the coil embedding groove on the electromagnetic core 503; Coil 504 is located in the coil embedding groove; The magnetic conduction opening direction of coil embedding groove and air pump rotating shaft 509 radially to disperse direction identical, the circumferential position place end face that points to drive plate 502 is inboard, offers 6 groups of magnet isolation tanks 522 facing to magnetic conduction opening direction place on the circumferential position place end face of drive plate 502; In conjunction with Figure 20, Figure 23, shown in 24, on the transmission cylinder 507 with drive plate 502 on the corresponding position of magnet isolation tank 522 be provided with 6 groups of magnet isolation tank 507a.

Like Figure 21, shown in 22, the circumferential position of drive plate 502 outside is hinged on the corresponding projection 517 along excircle respectively to an end that evenly is provided with 517, three driver blades 506 of three projections through pin; Apparent surface with driver blade 506 on the transmission cylinder 507 does Wear-resistant Treatment.

Shown in figure 19; When first electric controller (coil 504) when electric; First electric controller (electromagnetic core 503 with magnetic attraction) drives first transmission device (being the driver blade 506 that outer surface is bonded with friction plate 506a) and makes second transmission device (being transmission cylinder 507) and the power of drive plate 502 be separated (driver blade 506 is pull-in on the circumferential position outside of drive plate 502, does not engage with transmission cylinder 507); When first electric controller (coil 504) cut off the power supply, first electric controller (electromagnetic core 503 that does not have magnetic attraction) drives first transmission device (being the driver blade 506 that outer surface is bonded with friction plate 506a) made second transmission device (being transmission cylinder 507) engage (driver blade 506 compresses transmission cylinder 507 through friction plate 506a under centrifugal action) with the power of drive plate 502.

Shown in figure 19, the concrete working procedure of a kind of electromagnetic gear of the present invention in air pump is following:

Behind the engine start, drive drive plate 502 (belt pulley) rotation, when the air pump internal pressure is equal to or higher than the 4th setting value 6-8 kilogram when proper functioning (brake system can); Air pump need not work; This moment, pressure switch 525 control coils 504 must be electric, and to the end face of the drive plate 502 circumferential positions outside, friction material 506a does not contact with transmission cylinder 507 with driver blade 506 adhesives; Drive plate 502 can not be passed to air pump rotating shaft 509 through transmission cylinder 507 with power, and air pump is not worked.

When the air pump internal pressure is lower than the 4th setting value 6-8 kilogram (during the brake system cisco unity malfunction); Pressure switch 525 control coils 504 outages this moment; Driver blade 506 compresses transmission cylinder 507 under centrifugal action; Transmission cylinder 507 and drive plate 502 are rotated with speed, and transmission cylinder 507 drives air pump rotating shafts 509 rotations, makes air pump get into working state.

When magnetic clutch breaks down when causing coil 504 sudden power when driving; Driver blade 506 is not attracted by electromagnetic core 503; Driver blade 506 compresses transmission cylinder 507 under centrifugal action; Transmission cylinder 507 and drive plate 502 are rotated synchronously, and transmission cylinder 507 drives air pump rotating shaft 509 rotations, makes that air pump still can proper functioning under the burst powering-off state.

The present invention is to the production method of above-mentioned electromagnetic gear (being applied in the air pump); Basic identical with the production method among the embodiment one; Difference is: drive plate 502 is the belt pulley by engine drives, and passive device is air pump rotating shaft 509, and drive plate 502 is installed in the air pump rotating shaft 509 through bearing 502a; Transmission cylinder 507 is fixedly mounted in the air pump rotating shaft 509 through woodruff key 519, and electromagnetic core 503 is through being bolted on the air pump housing 509a.

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

When air pump pressure is lower than the 4th setting value 6-8 kilogram, the outage of pressure switch 525 control coils 504, drive plate 502 through driver blade 506 and transmission cylinder 507 with 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 coils 504 get electric, and driver blade 506 is pull-in on the end face of the drive plate 502 circumferential positions outside, does not combine with transmission cylinder 507; Can not be with transmission of power to air pump rotating shaft 509, air pump is not worked.

Embodiment six

Shown in figure 25; Under the constant prerequisite of other structures in the embodiment shown in Figure 19-24 five; Air pump in the present embodiment and embodiment's five difference structure is: first electric controller comprises permanent magnet 603c and the electromagnet assembly of being made up of electromagnetic core 603 and coil 604; Permanent magnet 603c is positioned at the inner chamber of transmission cylinder 607; And be fixed on the air pump shell 609a through clamping bolt, electromagnet assembly is positioned at the drive plate 602 circumferential positions outside and through being bolted on the air pump shell 609a.

Shown in figure 25; First transmission device comprises three driver blades 606; Driver blade 606 is hinged on the inboard projection 617 of drive plate 602 circumferential positions through bearing pin 624; Driver blade 606 is positioned on the opposing end surface of drive plate 602 and transmission cylinder 607; Driver blade 606 be shaped as arc, the internal surface of driver blade 606 is provided with one deck and is bonded in the arc friction plate 606a on the driver blade 606 through compacting, and is gapped between the opposing end surface of friction plate 606a and transmission cylinder 607; On the drive plate between the opposing end surface of permanent magnet 603c and electromagnetic core 603 602 and transmission cylinder 607, all offer some groups of magnet isolation tanks 622 and 607a, when coil 604 when electric the magnetic attraction of 603 pairs of driver blades 606 of electromagnetic core greater than the magnetic attraction of permanent magnet 603c to driver blade 606.

Shown in figure 25, the concrete working procedure of electromagnetic gear of the present invention in air pump is following:

Behind the engine start; Drive drive plate 602 (belt pulley) rotation; When the air pump internal pressure is equal to or higher than the 4th setting value 6-8 kilogram when proper functioning (brake system can), air pump need not work, pressure switch 625 control coils 604; Electromagnetic core 603 with driver blade 606 adhesives to the interior edge face of drive plate 602; The friction material 606a that be positioned on driver blade 606 internal surfaces this moment does not contact with transmission cylinder 607, and transmission cylinder 607 can not be with transmission of power to the air pump rotating shaft 609 of drive plate 602, and air pump is not worked.

When the air pump internal pressure is lower than the 4th setting value 6-8 kilogram (during the brake system cisco unity malfunction); This moment, the circuit of coil 604 was broken off in pressure switch 525 controls; 603 pairs of driver blades 606 of electromagnetic core do not have magnetic attraction; Three driver blades 606 firmly are being pull-in under the action of a magnetic field of permanent magnet 603c on the opposing end surface outside of transmission cylinder 607; Thereby make drive plate 602 drive transmission cylinder 607 rotations through three driver blades 606, transmission cylinder 607 drives air pump rotating shaft 609 rotations, makes air pump get into working state.

When power supply system when driving breaks down when causing coil 604 sudden power; Driver blade 606 is not attracted by electromagnetic core 603; Driver blade 606 is on the outer wall that firmly is pull-in on transmission cylinder 607 under the action of a magnetic field of permanent magnet 603c; The friction plate 606a of driver blade 606 internal surfaces firmly compresses transmission cylinder 607; Make drive plate 602 transmission of power to transmission cylinder 607 and then drive air pump rotating shaft 609 rotated, thereby make air pump under the burst powering-off state, get into working state, guarantee that vehicle can normal brake application under the burst powering-off state through driver blade 606.

Certainly; The particular location of permanent magnet 603c is not limited to the bearing 602a that passes through shown in Figure 25 and is installed in the air pump rotating shaft 609; Also can permanent magnet 603c be embedded on the opposing end surface outside of transmission cylinder 607, perhaps directly with processing with the opposing end surface employing permanent magnet material of driver blade 606 on the transmission cylinder 607.

The present invention is to the production method of above-mentioned electromagnetic gear (being applied in the air pump); Basic identical with the production method among the embodiment five; Difference is: driver blade 606 is hinged on the inner side end of drive plate 602 circumferential positions (among the embodiment five side end face on) outside; First electric controller in the step (d) is permanent magnet 603c and the electromagnet assembly be made up of electromagnetic core 603 and coil 604; Permanent magnet 603c is sheathed on air pump rotating shaft 609 outer shrouds and through being bolted on the air pump housing 609a; Permanent magnet 603c is located at transmission cylinder 607 inner chambers, and electromagnet assembly is located at the opposing end surface outside of drive plate 602, with electromagnetic core 603 through being bolted on the air pump housing 509a; When coil 604 when electric the magnetic attraction of 603 pairs of driver blades 606 of electromagnetic core greater than the magnetic attraction of permanent magnet 603c to driver blade 606.

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

In embodiment one to six, driver blade is not limited to three, more than one all can, the driver blade of varying number can be set, to guarantee the transmission best results according to the model of transmission device etc.; Can connect friction plate on the driver blade increasing friction, better transmission also can be omitted friction plate and driver blade and transmission cylinder are carried out Wear-resistant Treatment; Driver blade is steel, iron or other conductive magneto-conductive materials; Friction plate is full-metallic, asbestos or other high-abrasive materials.

The Placement of friction plate and driver blade can be that the compacting in the foregoing description one to six is bonding, also can be that bolt connects, rivets or other Placements.

Above-described embodiment describes preferred implementation of the present invention; Be not that scope of the present invention is limited; Design under the prerequisite of spirit not breaking away from the present invention; Various distortion and improvement that those of ordinary skills make technological scheme of the present invention all should fall in the definite protection domain of claims of the present invention.

Claims (10)

1. electromagnetic fan clutch; Comprise transmission shaft (201), drive plate (202), fan fixed disk (209) and magnet fixed disc (210); Said drive plate (202) is fixedly mounted on the said transmission shaft (201); Said fan fixed disk (209) is installed on the said transmission shaft (201) through clutch shaft bearing (208); Said magnet fixed disc (210) is fixedly mounted on the said transmission shaft (201), and said magnet fixed disc (210) is used for driving said fan fixed disk (209) differential transfer through magnetic effect, it is characterized in that: also comprise first transmission device (206), second transmission device (207) and first electric controller (203,204); Said second transmission device (207) is fixedly connected with said fan fixed disk (209)

When said first electric controller (204) when electric, said first electric controller (203) drives said first transmission device (206) makes said second transmission device (207) and said drive plate (202) be separated;

When first electric controller (204) cut off the power supply, said first electric controller (203) drives said first transmission device (206) made said second transmission device (207) engage with said drive plate (202).

2. according to claim 1 two fast electromagnetic fan clutch is characterized in that: said second transmission device comprises transmission cylinder (207).

3. according to claim 2 two fast electromagnetic fan clutch is characterized in that: said first transmission device comprises at least one driver blade (206).

4. according to claim 3 two fast electromagnetic fan clutch; It is characterized in that: said driver blade (206) is three arc-like sheets; The circumferential position outside of said drive plate (202) is provided with three groups of projections (217), and said three driver blades (206) are hinged on the complementary protuberance (217) of said drive plate (202) through bearing pin (224);

Said transmission cylinder (207) has the opposing end surface with said drive plate (202) in the circumferential position outside of said drive plate (202), gapped between the opposing end surface of said driver blade (206) and said transmission cylinder (207);

Said first electric controller comprises the electromagnet assembly of being made up of electromagnetic core (203) and coil (204), and said electromagnet assembly is positioned at the inner chamber of the circumferential position place end face of said drive plate (202).

5. according to claim 3 two fast electromagnetic fan clutch; It is characterized in that: said transmission cylinder (407) has the opposing end surface with said drive plate (402) in the circumferential position outside of said drive plate (402); The said opposing end surface of said transmission cylinder (407) is provided with three groups of projections (417); Said driver blade (406) is three arc-like sheets, and said three driver blades (406) are hinged on the complementary protuberance (417) of said transmission cylinder (407) through bearing pin (424); Gapped between the opposing end surface of said driver blade (406) and said drive plate (402);

Said first electric controller comprises permanent magnet (403c) and the electromagnet assembly of being made up of electromagnetic core (403) and coil (404); Said permanent magnet (403c) is positioned at the inner chamber of said drive plate (402), and said electromagnet assembly is positioned at the said opposing end surface outside of said transmission cylinder (407);

When said coil (404) when electric said electromagnetic core (403) to the magnetic attraction of said driver blade (406) greater than the magnetic attraction of said permanent magnet (403c) to said driver blade (406).

6. according to claim 4 or 5 described electromagnetic fan clutch, it is characterized in that: said driver blade (206) is gone up and the opposing end surface place of said transmission cylinder (207) is fixedly connected with arc friction plate (206a).

7. the production method of an electromagnetic fan clutch is characterized in that may further comprise the steps:

(a) form transmission shaft (201), fan fixed disk (209), magnet fixed disc (210) and first electric controller (203,204);

(b) form drive plate (202);

(c) form first transmission device (206);

(d) form second transmission device (207);

(e) first transmission device (206) and first electric controller (203,204) are installed; Said drive plate (202) is fixedly mounted on the said transmission shaft (201); Said magnet fixed disc (210) is fixedly mounted on the said transmission shaft (201); Said second transmission device (207) is fixed on the said fan fixed disk (209); Said fan fixed disk (209) is installed on the said transmission shaft (201) through clutch shaft bearing (208), and said magnet fixed disc (210) can drive said fan fixed disk (209) differential transfer, makes:

When said first electric controller (204) when electric, said first electric controller (203) drives said first transmission device (206) makes said second transmission device (207) and said drive plate (202) be separated;

When first electric controller (204) cut off the power supply, said first electric controller (203) drives said first transmission device (206) made said second transmission device (207) engage with said drive plate (202).

8. the production method of electromagnetic fan clutch according to claim 7; It is characterized in that: first electric controller in the said step (a) is the electromagnet assembly of being made up of electromagnetic core (203) and coil (204), said electromagnet assembly is installed in the inner chamber of the circumferential position place end face of said drive plate (202);

The circumferential position outside of the said drive plate (202) in the said step (b) has three groups of projections (217); Said first transmission device in the said step (c) is three arc driver blades (206), is hinged on said three driver blades (206) on the complementary protuberance (217) of said drive plate (202) through bearing pin (224);

Second transmission device in the said step (d) is transmission cylinder (207), has the opposing end surface with said drive plate (202) the circumferential position outside after said transmission cylinder (207) is installed, and is gapped between the opposing end surface of said driver blade (206) and said transmission cylinder (207).

9. the production method of electromagnetic fan clutch according to claim 7, it is characterized in that: first transmission device in the said step (c) is three arc driver blades (406);

Second transmission device in the said step (d) is transmission cylinder (407); After installing, said transmission cylinder (407) has opposing end surface with said drive plate (402) the circumferential position outside; The said opposing end surface inboard of said transmission cylinder (407) has three groups of projections (417); Said three arc driver blades (406) are hinged on through bearing pin (424) on the complementary protuberance (417) of said transmission cylinder (407), gapped between the end face of the circumferential position of said three arc driver blades (406) and said drive plate (402) outside;

First electric controller in the said step (a) is permanent magnet (403c) and the electromagnet assembly be made up of electromagnetic core (403) and coil (404); Said permanent magnet (403c) is installed in the inner chamber of said drive plate (402), said electromagnet assembly is arranged on the said opposing end surface outside of said transmission cylinder (407);

When said coil (404) when electric said electromagnetic core (403) to the magnetic attraction of said driver blade (406) greater than the magnetic attraction of said permanent magnet (403c) to said driver blade (406).

10. controlling method to each described electromagnetic fan clutch among the claim 1-6, step comprises:

When engine water temperature is lower than first setting value, make first electric controller (104; 404);

When engine water temperature is equal to or higher than first setting value, make first electric controller (104; 404) outage.

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