CN201103637Y - Relict electrokinetic potential eliminating device for electromagnetic clutch of automobile air conditioner - Google Patents

Abstract

The utility model relates to a removing device of remained electromotive force of an electromagnetic clutch on an automobile air conditioner, which is characterized in that an iron core (4) of the electromagnetic clutch is provided with an installing box (8), inside of which is provided with a diode (9) connected with a cathode and an anode of a loop (3). Due to the application of the technical proposal, the electromagnetic clutch on the automobile air conditioner provided by the utility model can realize the separation of a gag bit from a driving wheel in the instant of power-down, thus increasing the response speed of separation in case of power-down.

Description

The residual electromotive force cancellation element of automobile air conditioner electromagnetic clutch

Technical field:

The utility model relates to a kind of automobile air conditioner electromagnetic clutch, particularly a kind of automobile air conditioner electromagnetic clutch that has residual electromotive force cancellation element.

Background technique:

Traditional automobile air conditioner electromagnetic clutch is made of three parts altogether: i.e. drive wheel, electromagnetic coil, armature, it is the important component part of automotive air-conditioning system, be installed on compressor front end main shaft and the protecgulum, to the power of compressor transmission, and whether turn round by the solenoid controlled compressor on the clutch from motor.The electromagnetic coil energising produces magnetic field during work, drive wheel by running all the time produces electromagnetic force, makes drive wheel and armature adhesive, and armature is connected on the compressor main shaft by key, armature after the adhesive and drive wheel run-in synchronism drive compressor operation and realize refrigeration by the friction moment of torsion.Outage magnetic force disappears, spring reset, and armature separates with drive wheel, and compressor quits work, the drive wheel no load running.Conventional coil is after outage, and there is the residual inductance electromotive force in coil, and outage magnetic force can not disappear immediately, and armature can not effectively separate with drive wheel.

The model utility content:

The purpose of this utility model solves exactly that there is the residual inductance electromotive force in coil in the prior art, and outage back magnetic force can not disappear immediately, the problem that armature and drive wheel can not timely and effectively separate.

To achieve these goals, the utility model has adopted following technological scheme:

The remaining electromotive force cancellation element of automobile air conditioner electromagnetic clutch, it comprises the automobile air conditioner electromagnetic clutch of being made up of armature, drive wheel and iron-core coil, it is characterized in that: at least one diode is set on iron core, the negative pole of the positive lead circle of diode, the positive pole of the negative lead circle of diode.

Because diode is fragile, be the protection diode, a mounting box of being made by insulating material is set on iron core, described diode is arranged in the mounting box, and with the corresponding connection of both positive and negative polarity of coil.

The Placement of diode and coil lead (enameled cable) adopts slotting corresponding with the diode two ends respectively connection of spring of pair of metal is set in mounting box, and the slotting spring of each metal is provided with the twice slot and cooperates with diode pin, the corresponding clamping of coil lead respectively.Adopt metal to insert spring, when the slotting spring of metal was pressed into, slot destroyed the paint film of enameled cable, and diode is connected with enameled cable and coil lead.Metal is inserted the output polar that spring promptly can be used as coil lead.

Owing to adopted technique scheme, make automobile air conditioner electromagnetic clutch that the utility model provides can realize separating of armature and drive wheel in the moment of outage, having improved outage and having separated speed of response.

For more detailed explanation the utility model, following accompanying drawing provides two most preferred embodiments.

Description of drawings:

Fig. 1 is a sectional view of the present utility model;

Fig. 2 is that Fig. 1 removes the A-A of compressor skull 5 to view;

Another kind of mounting box shown among Fig. 3 Fig. 2 and diode linkage structure schematic representation;

Fig. 4 is that Fig. 2 removes the partial schematic diagram that lid is installed;

Fig. 5 is that Fig. 3 removes the partial schematic diagram that lid is installed;

Fig. 6 is the B-B sectional view of Fig. 2;

Fig. 7 is the C-C sectional view of Fig. 4;

Fig. 8 is the D-D sectional view of Fig. 5.

Embodiment:

Embodiment one: as shown in Figure 1, the utility model at first comprises automobile air conditioner electromagnetic clutch, and it mainly is made up of armature 1, drive wheel 2, iron core 4 and coil 3, and the end cap 6 of iron core 4 by connecting on it links to each other with compressor skull 5 with screw 7.The residual electromotive force cancellation element of automobile air conditioner electromagnetic clutch described in the utility model is arranged in the iron core 4, Fig. 1 cannot see, its mounting point as shown in Figure 2, end cap 6 upper right quarters are removed a part among Fig. 2, expose iron core 4 end faces, in iron core 4, embed and connect a mounting box 8 of making by insulating material (plastics), described diode 9 is arranged in the mounting box, the positive and negative of diode 9 reaches and the reverse corresponding connection (present embodiment coil negative pole is connected on the iron core 4) of the both positive and negative polarity of coil 3, coil 3 should be positioned at iron core 4, be drawn in the mounting box 8, just schematic representation.Referring to Fig. 4, mounting box 8 removes lid, a diode 9 is set in the box, and its two ends are provided with a metal respectively and insert spring 10, two pin 9a of diode 9, the coil lead 11 of drawing from iron cores, be snapped among the slot 10a in the slotting spring 10 of metal, as shown in Figure 7, snap in the process of slot, the enamel-cover film on the pin 9a of diode 9, coil lead 11 surfaces is destroyed, the metal body that exposes is inserted spring 10 with metal and is well contacted, and metal is inserted to connect to go between on the spring 10 again and connected the voltage both positive and negative polarity respectively.Referring to Fig. 6, mounting box is made up of with lower box body 8a upper cartridge body 8, and lower box body 8a one end is provided with fin 8b, and it inserts from the attachment hole that iron core 4 is offered and stretches out to both sides.Can clearerly see metal clearly by Fig. 6 and insert annexation between spring 10, diode 9, coil lead 11 and the power line.

Aspect preparation process, diode adopts epoxy resin to be potted in the mounting box, sealing between mounting box and the iron-core coil is the key that is related to quality of product, and we are by a large amount of tests, and mounting box is connected the fast dry seal glue sealing of employing and can achieves the above object with iron-core coil.Adopt ultrasonic welding between the last lower body of mounting box, guaranteed requirement of strength.

Process is to adopting the various tests of deciding torque controller, as: the rupture test of static torque, axial collapse test, Heat Resistance Test, oil resisting test, ozone resistance test, endurance test, vibration test, heat cycle test, salt spray test etc. all reach designing requirement.

Embodiment two: as shown in Figure 3 be the structure that a kind of power supply lead wire negative pole is not connected on iron core 4, situation when wherein removing the mounting box upper box cover as shown in Figure 5, can be clearly seen that therefrom pair of metal is set in the box body inserts spring 10, and metal is inserted the diode 9 between the spring 10, the mated condition of slotting spring 10 of metal and diode pin 9a, coil lead 11 as shown in Figure 8, wherein metal is inserted the upper plate elongated portion connection power line 10b of spring 10, and as shown in Figure 8, other content is identical with embodiment 1.

Claims (3)

1, the residual electromotive force cancellation element of automobile air conditioner electromagnetic clutch, it comprises the automobile air conditioner electromagnetic clutch of being made up of armature, drive wheel and iron-core coil, it is characterized in that: at least one diode is set on iron core, the negative pole of the positive lead circle of diode, the positive pole of the negative lead circle of diode.

2, the residual electromotive force cancellation element of automobile air conditioner electromagnetic clutch according to claim 1, it is characterized in that: a mounting box of being made by insulating material is set on the iron core, described diode is arranged in the mounting box, and with the corresponding connection of both positive and negative polarity of coil.

3, the residual electromotive force cancellation element of automobile air conditioner electromagnetic clutch according to claim 2, it is characterized in that: be provided with by pair of metal in the mounting box and insert corresponding with the diode two ends respectively connection of spring, the slotting spring of each metal is provided with the twice slot and cooperates with diode pin, the corresponding clamping of coil lead respectively.

Images