KR20080106791A - Disk-hub assembly of electromagnetic clutch - Google Patents

Abstract

A disc-hub assembly of the electro magnetic clutch is provided to prevent the functioning noise and damage of compressor. A disc-hub assembly of the electro magnetic clutch comprises a hub(10) combined in the rotary shaft, a disc(20) which is attached or detached to the pulley assembly according to the electromechanical power generated from the field coil assembly, an inner stopper(50) combined with the hub, an outer stopper(40) which is arranged in the circumference of inner stopper and is combined with the disc, a disks stopper(30) having an plurality of linear springs(60) arranged at the fixed interval along by the column.

Description

Disk-Hub assembly of electromagnetic clutch

1 is an assembled cross-sectional view of a conventional electronic clutch,

Figure 2 is an exploded perspective view of the disk hub assembly of the electronic clutch of Figure 1,

3 is an exploded perspective view of a disk hub assembly of an electronic clutch according to the present invention;

4 is a perspective view of the disk hub assembly coupled state of FIG.

5 is a front view of the disk hub assembly of FIG. 4;

Figure 6 is a perspective view of the disk hub assembly coupled state of the electronic clutch according to another embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

10: hub 20: disk

30: disc stopper 40: outer stopper

50: inner stopper 60: linear spring

70: damper

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk hub assembly of an electronic clutch, and more particularly, to a disk hub assembly for an electronic clutch having an improved damping structure against a rotating fluctuation torque.

The driving of the compressor that compresses the refrigerant in the air conditioner of the vehicle is performed by the intermittent action of the electromagnetic clutch which intercepts the transmission of the engine power of the vehicle to the rotating shaft of the compressor.

As shown in FIG. 1, the general electronic clutch 201 includes a pulley assembly 210 which is rotated by receiving engine (not shown) power of an automobile, and a field coil assembly 220 which generates an electromagnetic force according to power application. The disk hub assembly 101 is attached to or spaced apart from the pulley assembly 210 according to the electromagnetic force generation of the field coil assembly 220 to control the driving of the compressor 203.

The pulley assembly 210 is coupled to the circumference of the rotor 213 and the rotor 213 which is rotatably installed by interposing a bearing 211 in the circumference of the front housing 207 of the compressor 203 and the engine It consists of a pulley 217 that rotates with the rotor 213 by the power transmitted through the belt (not shown).

The field coil assembly 220 is accommodated in the field coil accommodating part 215 formed in the rotor 213 and generates a field coil 221 which generates an electromagnetic force when the power is applied, and the front housing 207 of the compressor 203. It has a field coil fixing member 223 fixed to the support to support the field coil (221).

Meanwhile, as shown in FIGS. 1 and 2, the disc hub assembly 101 of the conventional electronic clutch has a hub 110 coupled to the rotating shaft 205 of the compressor 203 and a stopper coupled to the hub 110. Plate 130, the field coil assembly 220 and the annular plate-shaped disk 120 attached to or spaced apart from the pulley assembly 210 in accordance with the presence of electromagnetic force generation, and radially disposed with respect to the center of the hub 110, both ends Is coupled to the back surface of the stopper plate 130 and the plurality of plate-shaped leaf spring 140 coupled to the stopper plate 130 and the disc 120, respectively, to operate the disc hub assembly 101. It is composed of a damper 150 for absorbing shock.

When the power supply is applied to the field coil assembly 220 of the electromagnetic clutch 201 of the disk hub assembly 101 having such a configuration, an electromagnetic force is generated in the field coil 221, and the disk hub assembly 101 is generated by the electromagnetic force. A disk 120 is attached to the rotor 213 of the pulley assembly 210. As a result, the disk hub assembly 101 rotates together with the pulley assembly 210, and the rotational force is coupled to the hub 110 through the disk 120 and the hub 110 of the disk hub assembly 101 ( By rotating the rotating shaft 205 of the 203, the compressor 203 is driven.

On the other hand, when the power transmitted to the field coil assembly 220 of the electronic clutch 201 is cut off, the electromagnetic force of the field coil 221 disappears due to the elastic force of the leaf spring 140, the disk of the disk hub assembly 101 120 is spaced apart from rotor 213 of pulley assembly 210. As a result, even when the pulley assembly 210 rotates, the disc hub assembly 101 is stopped and the rotation of the disc hub assembly 101 is stopped, thereby driving the compressor 203.

However, in the disk hub assembly 101 of the conventional electronic clutch, since the leaf spring 140 is formed in a plate shape, only the buffering action in the axial direction is possible and the buffering action in the rotational direction of the disk assembly is impossible. There is this.

As a result, a buffer cannot be compensated for the rotation fluctuation torque of the engine (not shown) that is instantaneously generated in the vehicle engine (not shown) and the rotation fluctuation torque generated by the compressor 203. There was a problem that the operating noise is increased.

In addition, the rotational fluctuation torque is directly transmitted to the compressor 203, thereby damaging the compressor 203.

It is therefore an object of the present invention to provide a disc hub assembly of an electromagnetic clutch which can attenuate rotational fluctuation torque to prevent operating noise and damage of the compressor.

The object is, in accordance with the present invention, the disk hub assembly of the electromagnetic clutch coupled to and spaced apart from the pulley assembly 210 in accordance with the presence or absence of electromagnetic force generation of the field coil assembly 220 coupled to the rotary shaft 205 of the compressor (203) 1) a hub (10) coupled to the rotating shaft (205); A disk 20 attached or spaced apart from the pulley assembly 210 according to the electromagnetic force generation of the field coil assembly 220; An inner stopper 50 coupled to the hub 10, an outer stopper 40 disposed in the circumferential region of the inner stopper 50 and coupled to the disk 20, and both end regions of the inner stopper 50. Disc hub assembly (1) of the electromagnetic clutch characterized in that it comprises a disk stopper (30) coupled to the outer stopper (40) and having a plurality of linear springs (60) arranged at predetermined intervals in the circumferential direction. Is achieved by.

Here, the inner stopper 50 and the outer stopper 40 are injection molded from a plastic material, and the linear spring 60 is insert-coupled to the inner stopper 50 and the outer stopper.

Further, the linear spring 60 is more preferably provided with spring steel or carbon fiber steel.

At this time, it is effective that the linear spring 60 has a curved shape.

On the other hand, it is preferable to further include a plurality of dampers 70 interposed along the circumferential direction in the region between the disk 20 and the inner stopper 50.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention. At this time, since the remaining configuration of the electronic clutch 201 except for the disk hub assembly 1 is almost the same as the configuration of the conventional electronic clutch 201 described above, a detailed description thereof will be omitted, and the components other than the disk hub assembly 1 will be omitted. Reference numerals used in FIG. 1 refer to FIG.

Figure 3 is an exploded perspective view of the disk hub assembly of the electronic clutch according to the present invention, Figure 4 is a perspective view of the disk hub assembly coupled state of Figure 3, Figure 5 is a front view of the disk hub assembly of FIG. As shown in these figures, the disk hub assembly 1 of the electronic clutch according to the present invention is a hub 10 coupled to the rotating shaft 205 of the compressor 203, and whether or not the power supply of the field coil assembly 220 is applied. Rotational force of the disk 20 attached to or spaced apart from the rotor 213 of the pulley assembly 210 and the pulley assembly 210 transmitted to the disk 20 in the attached state of the disk 20 and the rotor 213 It includes a disk stopper 30 for transmitting to the rotary shaft 205 of the compressor 203 through the hub (10).

The hub 10 is formed in the rotational shaft coupling portion 11 coupled to the rotation shaft 205 of the compressor 203 and the peripheral region of the rotation shaft coupling portion 11 and the inner stopper 50 of the disk stopper 30 to be described later. It has the inner stopper coupling part 13 couple | bonded with the center area | region. In addition, a fastening hole 17 penetrating the rotary shaft coupling portion 11 is formed at the center of the rotary shaft coupling portion 11 of the hub 10. The hub 10 is fixedly coupled to the rotation shaft 205 by a bolt 15 or the like fastened to the female screw portion of the rotation shaft 205 through the fastening hole 17.

Here, the hub 10 may be mutually coupled to the inner stopper 50 by a coupling part such as a bolt 15, and when the inner stopper 50 to be described later is provided with a reinforced plastic, the insert is inserted into the inner stopper 50. Can be combined.

The disk 20 is provided with an annular metal plate material having a predetermined thickness having a hub passage hole 21 in the center. On the peripheral edge surface of the disk 20, stopper coupling holes 23 for mutual coupling with the outer stopper 40 to be described later are formed at predetermined intervals along the circumferential direction. The disk 20 is attached to the rotor 213 when the electromagnetic force is generated by the power applied to the field coil assembly 220 to receive the rotational force of the pulley assembly 210, the rotor 213 The attachment surface of the disk 20 attached to the at least one surface having an area corresponding to the attachment surface of the rotor 213 is preferable for smooth rotational force transmission.

On the other hand, the disk stopper 30 is an outer stopper 40 for receiving the rotational force of the pulley assembly 210 from the disk 20, and an inner stopper for transmitting the rotational force transmitted to the outer stopper 40 to the rotating shaft 205 ( 50, a plurality of linear springs 60 for elastically supporting the outer stopper 40 in the axial direction and the rotational direction with respect to the hub 10, and a damper for cushioning the operating shock and noise of the disc hub assembly 1 ( 70).

The outer stopper 40 is provided with an annular plate-shaped member having an inner stopper accommodating space 41 formed in the center thereof. At this time, the peripheral area of the outer stopper 40 preferably corresponds to at least the peripheral area of the disk 20 for smooth attachment with the disk 20. On the circumferential edge of the outer stopper 40, a disk engaging hole 45 for engaging with the disk 20 by using a coupling part 43 such as a rivet is provided in the stopper engaging hole 23 of the disk 20. It is formed to correspond. In addition, a spring engaging portion 47 to which the outer end region of the linear spring 60 is coupled is formed at predetermined intervals along the circumferential direction on the inwardly edged surface of the outer stopper 40. The outer stopper 40 may be provided using a metal plate material or a reinforced plastic material having a predetermined thickness.

In addition, the inner stopper 50 is provided with a circular plate member concentrically accommodated in the inner stopper accommodation space 41 of the outer stopper 40. In the peripheral region of the inner stopper 50, a damper coupling portion 51 to which the damper 70 is coupled, and a spring coupling portion 53 to which the inner end region of the linear spring 60 is coupled are predetermined along the circumferential direction. It is formed at intervals. Like the outer stopper 40, the inner stopper 50 may be provided using a metal plate material or a reinforced plastic material having a predetermined thickness.

Here, the hub 10 is fixedly coupled to the center of the inner stopper 50. When the inner stopper 50 is provided with a reinforced plastic material, as described above, the hub 10 is ejected from the inner stopper 50. The insert can be combined during molding. Of course, even if the inner stopper 50 is made of metal or reinforced plastic, the hub 10 may be fixedly coupled to the center of the inner stopper 50 by a separate coupling structure.

On the other hand, the linear spring 60 is disposed at predetermined intervals along the circumferential direction in a state in which both ends are coupled to the spring stopper portions 47 and 53 of the outer stopper 40 and the inner stopper 50.

These linear springs 60 are preferably provided with at least three or more linear springs 60 arranged at equal intervals along the circumferential direction of the disk stopper 30 in consideration of the rotational balance of the disk hub assembly 1. . At this time, the material of the linear spring (60) is effectively provided with a spring steel or carbon fiber steel material having sufficient rigidity against other external forces, including rotational torque and torsional torque generated during the rotation of the disc hub assembly (1). to be.

In addition, these linear springs 60 have an inner torque when the disk hub assembly 1 rotates in a state where the rotation torque generated during the rotation process of the disk hub assembly 1 and the disk 20 and the rotor 213 are attached. It is preferable that the rotary and torsional torques generated between the stopper 50 and the outer stopper 40 are provided with a hollow tubular cylinder spring or a non-hollow wire spring so as to effectively attenuate by buffering action.

At this time, the cross section of the linear spring 60 is preferably provided with a circular cross section so as to smoothly correspond to the torsion torque, it may have a polygonal cross-sectional shape depending on the conditions.

In addition, these linear springs 60 have a curved shape having a predetermined radius so as to more effectively respond to rotational torque and torsional torque generated between the inner stopper 50 and the outer stopper 40 when the disk hub assembly 1 rotates. It is desirable to have. Alternatively, it may be provided as a linear spring 60 having a curved shape in at least one region of the longitudinal direction.

Alternatively, the shape of the linear spring 60 may be provided as a linear linear spring 60 in addition to the above-described curved shape and curved shape according to the magnitude of the rotational force of the disc hub assembly 1.

The linear spring 60 is inserted into the spring coupling portion 47 and 53 of the outer stopper 40 and the inner stopper 50 when the outer stopper 40 and the inner stopper 50 are injection-molded with reinforced plastic. Can be. Thereby, the assembly process of the linear spring 60 can be simplified.

Of course, even if the outer stopper 40 and the inner stopper 50 is made of metal or reinforced plastic, as shown in FIG. 6, stopper coupling portions 61 are formed at both end regions of the linear spring 60 and the stopper coupling is performed. Spring coupling holes (not shown) may be formed in the outer stopper 40 and the inner stopper 50 so as to correspond to the part 61, so that the linear spring 60 may be coupled to the coupling parts 63 such as bolts or rivets. have.

On the other hand, the damper 70 is a fixed portion 71 coupled to the damper coupling portion 51 of the inner stopper 50, and the damping portion 73 that damping action between the disk 20 and the inner stopper 50 It has a structure formed integrally with rubber material. The damper 70 cushions shock generated during the operation of the disk hub assembly 1 and absorbs noise generated when the disk 20 and the rotor 213 are separated from each other. Herein, by adjusting the thickness of the damping unit 73, the amount of noise generated when the disk 20 and the rotor 213 are separated from each other may be appropriately adjusted.

By such a configuration, when the disk hub assembly 1 according to the present invention is supplied with power to the field coil assembly 220 of the electronic clutch 201 and the electromagnetic force generated in the field coil 221 is transmitted to the rotor 213. The disk 20 is attached to the rotor 213 of the pulley assembly 210.

Thereby, the disk hub assembly 1 rotates together with the pulley assembly 210, and this rotational force is coupled to the hub 10 through the disk 20 and the hub 10 of the disk hub assembly 1 ( By rotating the rotating shaft 205 of the 203, the compressor 203 is driven.

At this time, the axial impact and rotational torque generated in the process in which the disk 20 is attached to the rotor 213 is attenuated by the buffering action in the axial direction and the rotational direction acting on the linear spring (60). In addition, when the rotation fluctuation torque is instantaneously generated by the explosion force of the vehicle engine (not shown), the linear spring 60 buffers the shock in the rotational direction as shown in FIG. 5, so that the fluctuation of the rotation fluctuation torque is linear spring Is absorbed into (60). Thereby, damage to the compressor 203 can be prevented and the noise by the variable torque can be significantly reduced.

On the other hand, when the power transmitted to the field coil assembly 220 of the electronic clutch 201 is cut off, the electromagnetic force disappears from the field coil 221, the disc of the disk hub assembly 1 by the elastic force of the linear spring 60 20 is spaced apart from the rotor 213 of the pulley assembly 210. As a result, even when the pulley assembly 210 rotates, the disc hub assembly 1 stops rotating, and the rotation of the disc hub assembly 1 stops, thereby stopping the drive of the compressor 203.

As described above, the disk hub assembly 1 of the electronic clutch according to the present invention has a buffering effect on the axial direction and the rotational direction, and thus the rotational fluctuation torque generated in the engine (not shown) together with the damping of the axial shock. Can be effectively attenuated. Thereby, the operation noise and damage of the compressor 203 due to the variable torque can be prevented.

As described above, according to the present invention, there is provided a disk hub assembly of an electromagnetic clutch that can attenuate rotational fluctuation torque to prevent operation noise and damage of the compressor.

Claims (5)

In the disk hub assembly (1) of the electromagnetic clutch coupled to the rotating shaft 205 of the compressor (203) and attached to and spaced from the pulley assembly (210) in accordance with the presence or absence of electromagnetic force generation of the field coil assembly (220), A hub 10 coupled to the rotation shaft 205; A disk 20 attached or spaced apart from the pulley assembly 210 according to the electromagnetic force generation of the field coil assembly 220; The inner stopper 50 coupled to the hub 10, the outer stopper 40 disposed in the circumferential region of the inner stopper 50 and coupled to the disk 20, and both end regions of the inner stopper 50 And a disk stopper (30) coupled to the outer stopper (40) and having a plurality of linear springs (60) arranged at predetermined intervals in the circumferential direction. The method of claim 1, The inner stopper 50 and the outer stopper 40 are injection molded from a plastic material, and the linear spring 60 is insert-coupled to the inner stopper 50 and the outer stopper 40. Disc hub assembly of clutch. The method of claim 1, The linear spring (60) is a disk hub assembly of an electronic clutch, characterized in that provided by spring steel or carbon fiber steel. The method according to any one of claims 1 to 3, The linear spring (60) is a disk hub assembly of an electronic clutch, characterized in that having a curved shape. The method of claim 1, And a plurality of dampers (70) interposed along the circumferential direction in the region between the disk and the inner stopper (50).

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